关于创建springboot项目,test测试类引包异常报错求解?

通过快速初始化工具创建springboot项目后,Test测试类提示导入包异常。eclipse和idea皆是如此。
图片说明

idea的的问题可以通过手动导入idea安装目录lib文件夹下的junit-4.12.jar解决问题。但是eclipse受到导入junit只能解决org.junit.Test;和org.junit.runner.RunWith;的问题。至于org.springframework.boot.test.context.SpringBootTest;的@SpringBootTest仍然提示无效。求解?

2个回答

让idea自动从网络上下载缺失的jar即可,可能是兼容问题。

hu_belif
huwao 不行的自己上官网找个合适版本的jar应该能解决,要还是不行就是IDE的问题了。重装一下IDE或者更新一下版本。
接近 2 年之前 回复
<properties>
        <maven-jar-plugin.version>3.1.1</maven-jar-plugin.version>
    </properties>
properties中加入这个。然后再重新导入测试的jar
Csdn user default icon
上传中...
上传图片
插入图片
抄袭、复制答案,以达到刷声望分或其他目的的行为,在CSDN问答是严格禁止的,一经发现立刻封号。是时候展现真正的技术了!
其他相关推荐
SpringBoot使用通用Mapper进行测试报错,求助求助

![yaml配置](https://img-ask.csdn.net/upload/201907/29/1564412164_235785.png) ![xml配置](https://img-ask.csdn.net/upload/201907/29/1564412193_822630.png) ![mapper接口](https://img-ask.csdn.net/upload/201907/29/1564412237_243718.png) ![实体类](https://img-ask.csdn.net/upload/201907/29/1564412261_397644.png) ![启动类](https://img-ask.csdn.net/upload/201907/29/1564412281_141524.png) ![测试类](https://img-ask.csdn.net/upload/201907/29/1564412304_1780.png) ![报错](https://img-ask.csdn.net/upload/201907/29/1564412323_933132.png)

eclipse sts插件创建spring start project springboot项目报错

初学springboot框架,用sts插件搭建了一个 springboot 项目测试一下是否成功。 直接执行main方法说找不到或无法加载主类,当然我的Application类都是自动生成的,注解都有,这个都没问题,但是就是说找不到或无法加载主类。 然后我用maven build启动,报了如下错: [INFO] Scanning for projects... [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building spring-boot-sample 0.0.1-SNAPSHOT [INFO] ------------------------------------------------------------------------ [INFO] [INFO] >>> spring-boot-maven-plugin:1.5.3.RELEASE:run (default-cli) > test-compile @ spring-boot-sample >>> [INFO] [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ spring-boot-sample --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] Copying 1 resource [INFO] Copying 1 resource [INFO] [INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ spring-boot-sample --- [INFO] Changes detected - recompiling the module! [INFO] Compiling 2 source files to E:\Java learn\All workspacce\dev_springboot\spring-boot-sample\target\classes [INFO] ------------------------------------------------------------- [ERROR] COMPILATION ERROR : [INFO] ------------------------------------------------------------- [ERROR] 读取E:\Java learn\Maven\apache-maven\org\springframework\boot\spring-boot-autoconfigure\1.5.3.RELEASE\spring-boot-autoconfigure-1.5.3.RELEASE.jar时出错; error in opening zip file [ERROR] 读取E:\Java learn\Maven\apache-maven\org\springframework\boot\spring-boot-autoconfigure\1.5.3.RELEASE\spring-boot-autoconfigure-1.5.3.RELEASE.jar时出错; cannot read zip file [ERROR] /E:/Java learn/All workspacce/dev_springboot/spring-boot-sample/src/main/java/com/example/simple/SpringBootSampleApplication.java:[4,46] 程序包org.springframework.boot.autoconfigure不存在 [ERROR] /E:/Java learn/All workspacce/dev_springboot/spring-boot-sample/src/main/java/com/example/simple/SpringBootSampleApplication.java:[6,2] 找不到符号 符号: 类 SpringBootApplication [INFO] 4 errors [INFO] ------------------------------------------------------------- [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 3.632 s [INFO] Finished at: 2017-05-07T22:06:15+08:00 [INFO] Final Memory: 22M/191M [INFO] ------------------------------------------------------------------------ [WARNING] The requested profile "pom.xml" could not be activated because it does not exist. [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project spring-boot-sample: Compilation failure: Compilation failure: [ERROR] 读取E:\Java learn\Maven\apache-maven\org\springframework\boot\spring-boot-autoconfigure\1.5.3.RELEASE\spring-boot-autoconfigure-1.5.3.RELEASE.jar时出错; error in opening zip file [ERROR] 读取E:\Java learn\Maven\apache-maven\org\springframework\boot\spring-boot-autoconfigure\1.5.3.RELEASE\spring-boot-autoconfigure-1.5.3.RELEASE.jar时出错; cannot read zip file [ERROR] /E:/Java learn/All workspacce/dev_springboot/spring-boot-sample/src/main/java/com/example/simple/SpringBootSampleApplication.java:[4,46] 程序包org.springframework.boot.autoconfigure不存在 [ERROR] /E:/Java learn/All workspacce/dev_springboot/spring-boot-sample/src/main/java/com/example/simple/SpringBootSampleApplication.java:[6,2] 找不到符号 [ERROR] 符号: 类 SpringBootApplication [ERROR] -> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException 不知道怎么解决,有大神能说下 这个springboot 环境到底怎么搭建吗?

为什么新建的springboot项目报错

新建的springboot web项目,一建出来pom.xml就报错 错误的地方是这里: × <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.1.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> 错误的信息是这样的: Multiple annotations found at this line: - Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven- resources-plugin:2.6:testResources (execution: default-testResources, phase: process-test-resources) - Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven- resources-plugin:2.6:resources (execution: default-resources, phase: process-resources) 试过网上搜一些信息但都没用,快崩溃了,请问怎么办呀?

springboot项目用junit进行单元测试,无法注入bean

这个是报错信息: ![图片说明](https://img-ask.csdn.net/upload/201903/25/1553483733_450518.png) org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'cn.com.zhshzh.xs.pms.XsApplicationTests': Unsatisfied dependency expressed through field 'reimbursementInfoProcService'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'cn.com.zhshzh.xs.pms.system.test.service.ReimbursementInfoProcService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:587) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:91) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:373) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1344) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireBeanProperties(AbstractAutowireCapableBeanFactory.java:400) at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:118) at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83) at org.springframework.boot.test.autoconfigure.SpringBootDependencyInjectionTestExecutionListener.prepareTestInstance(SpringBootDependencyInjectionTestExecutionListener.java:44) at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:242) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:227) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:246) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:538) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:760) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:460) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:206) Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'cn.com.zhshzh.xs.pms.system.test.service.ReimbursementInfoProcService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1509) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1104) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1065) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:584) ... 29 common frames omitted 这个是测试类代码: package cn.com.zhshzh.xs.pms; import java.math.BigDecimal; import java.util.Date; import javax.ws.rs.core.Application; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.test.context.junit4.SpringRunner; import org.springframework.test.context.web.WebAppConfiguration; import cn.com.zhshzh.xs.pms.system.test.PO.ReimbursementInfoProc; import cn.com.zhshzh.xs.pms.system.test.service.ReimbursementInfoProcService; import lombok.extern.slf4j.Slf4j; // 获取启动类,加载配置,确定装载 Spring 程序的装载方法,它回去寻找 主配置启动类(被 @SpringBootApplication 注解的) @SpringBootTest(classes = Application.class) // 让 JUnit 运行 Spring 的测试环境, 获得 Spring 环境的上下文的支持 @RunWith(SpringRunner.class) @WebAppConfiguration @Slf4j public class XsApplicationTests { @Autowired private ReimbursementInfoProcService reimbursementInfoProcService; @Test public void TestCase() { ReimbursementInfoProc reimbursementInfoProc = new ReimbursementInfoProc(); reimbursementInfoProc.setProcessId("1"); reimbursementInfoProc.setPostId("1"); reimbursementInfoProc.setReimbursementPerson("23456"); reimbursementInfoProc.setReimbursementMoney(new BigDecimal("50.00")); reimbursementInfoProc.setReimbursementDate(new Date()); reimbursementInfoProc.setApprovalOpinion("审批通过"); reimbursementInfoProc.setCreateBy("23456"); reimbursementInfoProc.setUpdateBy("23456"); try { reimbursementInfoProcService.insertReimbursementInfo(reimbursementInfoProc); } catch (Exception e) { log.error("message", e); } } }

spring boot中写的一个测试类,运行不了

java.lang.IllegalStateException: Failed to load ApplicationContext at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:125) at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:108) at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:190) at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:132) at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:246) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:227) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:246) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190) at org.junit.runner.JUnitCore.run(JUnitCore.java:137) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47) at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70) **Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]** at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1699) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:573) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:495) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1089) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:859) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:762) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:398) at org.springframework.boot.SpringApplication.run(SpringApplication.java:330) at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:139) at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99) at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:117) ... 24 more Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment] at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:271) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:233) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:210) at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:51) at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:94) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:242) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:210) at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.handleTypes(MetadataBuildingProcess.java:352) at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:111) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:861) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:888) at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:57) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:390) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:377) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1758) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1695) ... 39 more Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:100) at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:54) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:137) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:88) at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:259) ... 56 more

springboot+mybatis(xml模式) 项目 单元测试 报错。

2017-09-01 17:35:21.034 INFO 11212 --- [ main] com.alibaba.druid.pool.DruidDataSource : {dataSource-1} inited org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.lxhw.module.jbxx.dao.DjKjfCzryDao.getCzry at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:230) at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:48) at org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:65) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:58) at com.sun.proxy.$Proxy98.getCzry(Unknown Source) at com.lxhw.module.jbxx.service.DjKjfCzryService.getCzry(DjKjfCzryService.java:47) at com.lxhw.module.jbxx.service.DjKjfCzryService$$FastClassBySpringCGLIB$$30938009.invoke(<generated>) at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:738) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:673) at com.lxhw.module.jbxx.service.DjKjfCzryService$$EnhancerBySpringCGLIB$$428d2624.getCzry(<generated>) at com.lxhw.module.jbxx.service.DjKjfCzryServiceTest.searchCzry(DjKjfCzryServiceTest.java:21) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75) at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86) at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:252) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191) at org.junit.runner.JUnitCore.run(JUnitCore.java:137) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:51) at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70) 这个是报错信息 项目运行正常,就是不能单元测试 初步估计是DjKjfCzryDao.class和DjKjfCzryDao.xml没有匹配上。但是run application是正常的,只有junit的时候有问题 是不是和引入mybais-spring-boot-starter有关系,不能自动去取配置文件了。

SpringBoot测试包无法使用的问题?

spring cloud项目,想进行测试,依赖已添加了 ``` <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> ``` 项目中的libraries中已有junit 4.12.jar包和spring-boot-starter-test-1.3.8.RELEASE.jar包和spring-test-4.2.8RELEASE.jar包。 但是进行测试的,@RunWith()可以使用,但是无论是SpringJUnit4ClassRunner.class还是SpringRunner.class都无法import这两个包。请问怎么解决

SpringBoot导入junit包错误

![![图片说明](https://img-ask.csdn.net/upload/201808/14/1534259210_807133.png)图片说明](https://img-ask.csdn.net/upload/201808/14/1534259204_74151.png) 如图所示:本地仓库已经有了junit包,在SpringBoot中编写测试类却找不到

Springboot项目部署服务器报错

我的一个maven项目集成了springboot,线下使用的时候没有问题,打成jar包部署到线上出现了这个问题。 mongo用户名,密码,数据库都已经配置,但是获取到的MongoTemplate实例指向的是test,而且没有通过授权. org.springframework.data.mongodb.UncategorizedMongoDbException: Query failed with error code 13 and error message 'not authorized on test to execute command { find: "c_player", filter: { _id: 10 }, limit: 1, singleBatch: true }' on server localhost:27017; nested exception is com.mongodb.MongoQueryException: Query failed with error code 13 and error message 'not authorized on test to execute command { find: "c_player", filter: { _id: 10 }, limit: 1, singleBatch: true }' on server localhost:27017

springboot入门项目打包出错

执行clean package时候报错项目正常运行 [INFO] --- maven-clean-plugin:2.6.1:clean (default-clean) @ demo-test --- [INFO] Deleting E:\EclipseMars\e3-manager\demo-test\target [INFO] [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ demo-test --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] Copying 1 resource [INFO] Copying 0 resource [INFO] [INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ demo-test --- [INFO] Changes detected - recompiling the module! [INFO] Compiling 2 source files to E:\EclipseMars\e3-manager\demo-test\target\classes [INFO] ------------------------------------------------------------- [ERROR] COMPILATION ERROR : [INFO] ------------------------------------------------------------- [ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK? [INFO] 1 error [INFO] ------------------------------------------------------------- [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 16.689 s [INFO] Finished at: 2018-06-30T16:12:47+08:00 [INFO] Final Memory: 20M/112M [INFO] ------------------------------------------------------------------------ [WARNING] The requested profile "pom.xml" could not be activated because it does not exist. [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project demo-test: Compilation failure [ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK? [ERROR] -> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException 百度上说的jre我都试过了,我用的是jdk而且是1.8. Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project demo-test: Compilation failure说找不到3.1 但是我配置这个jar包换个版本却还是报错找不到3.1这个版本。

测试类的包结构文件夹需要手动生成吗(junit)

我在IDEA的project structure的Mudules中配置的测试类路径为src\test\java,见图片红箭头处。但实际生成的测试类却和被测试类在同一个包 下为什么? ![图片说明](https://img-ask.csdn.net/upload/201801/31/1517388652_549366.png) ![图片说明](https://img-ask.csdn.net/upload/201801/31/1517388668_541427.png) junit测试类的包结构需要手动生成吗?包结构那么复杂怎么办?

springboot项目controller注入失败,空指针;单元测试没有问题

controller调用service、service调用dao 均报空指针问题 ``` @Controller public class TimeoutController extends AbstractController { @Autowired private LaoLuShiTangSkill laoLuShiTangSkill; ``` 接口 ``` public interface LaoLuShiTangSkill { ``` service实现 ``` import org.springframework.stereotype.Service; @Service public class LaoLuShiTangSkillImpl implements LaoLuShiTangSkill { @Autowired private UserBehaviorRecordDao userBehaviorDao; @Autowired private SkillUseRecordDao skillUseRecordDao; @Autowired private LaoLuShiTangContentDao laoLuShiTangContentDao; ``` mapper ``` import org.apache.ibatis.annotations.Mapper; @Mapper public interface UserBehaviorRecordDao { ```

Springboot的单元测试异常:SqlSessionTemplate

Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.mybatis.spring.SqlSessionTemplate]: Factory method 'sqlSessionTemplate' threw exception; nested exception is java.lang.NullPointerException at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[spring-beans-4.3.17.RELEASE.jar:4.3.17.RELEASE] at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ~[spring-beans-4.3.17.RELEASE.jar:4.3.17.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1181) ~[spring-beans-4.3.17.RELEASE.jar:4.3.17.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1075) ~[spring-beans-4.3.17.RELEASE.jar:4.3.17.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513) ~[spring-beans-4.3.17.RELEASE.jar:4.3.17.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.17.RELEASE.jar:4.3.17.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312) ~[spring-beans-4.3.17.RELEASE.jar:4.3.17.RELEASE] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.17.RELEASE.jar:4.3.17.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308) ~[spring-beans-4.3.17.RELEASE.jar:4.3.17.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-4.3.17.RELEASE.jar:4.3.17.RELEASE] at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:208) ~[spring-beans-4.3.17.RELEASE.jar:4.3.17.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138) ~[spring-beans-4.3.17.RELEASE.jar:4.3.17.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066) ~[spring-beans-4.3.17.RELEASE.jar:4.3.17.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireByType(AbstractAutowireCapableBeanFactory.java:1350) ~[spring-beans-4.3.17.RELEASE.jar:4.3.17.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.popul

SpringBoot2整合Redis测试模块报错

启动项目正常但是使用测试模块进行测试就有问题,就会报下面的错 ``` Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type 'org.springframework.data.redis.core.RedisTemplate<?, ?>' available: expected single matching bean but found 2: redisTemplate,stringRedisTemplate ``` 请问这是什么问题

IDEA创建的SpringBoot项目,pom.xml在Eclipse上报错

总监非要我把IDEA换成SpringBoot的开发工具 sts(eclipse), 现在将我idea上的项目导入eclipse后,pom.xml报错: ![图片说明](https://img-ask.csdn.net/upload/201707/27/1501124939_360289.png) ![图片说明](https://img-ask.csdn.net/upload/201707/27/1501124968_8922.png) **完整信息如下:** For artifact {org.springframework.boot:spring-boot-starter-data-api:null:jar}: The version cannot be empty. (org.apache.maven.plugins:maven-resources-plugin:2.6:testResources:default-testResources:process-test-resources) org.apache.maven.artifact.InvalidArtifactRTException: For artifact {org.springframework.boot:spring-boot-starter-data-api:null:jar}: The version cannot be empty. at org.apache.maven.artifact.DefaultArtifact.validateIdentity(DefaultArtifact.java:148) at org.apache.maven.artifact.DefaultArtifact.<init>(DefaultArtifact.java:123) at org.apache.maven.artifact.factory.DefaultArtifactFactory.createArtifact(DefaultArtifactFactory.java:157) at org.apache.maven.artifact.factory.DefaultArtifactFactory.createDependencyArtifact(DefaultArtifactFactory.java:57) at org.apache.maven.project.artifact.MavenMetadataSource.createDependencyArtifact(MavenMetadataSource.java:328) at org.apache.maven.project.artifact.MavenMetadataSource.createArtifacts(MavenMetadataSource.java:503) at org.apache.maven.lifecycle.internal.DefaultProjectArtifactFactory.createArtifacts(DefaultProjectArtifactFactory.java:50) at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies(LifecycleDependencyResolver.java:119) at org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved(MojoExecutor.java:245) at org.eclipse.m2e.core.internal.embedder.MavenImpl.execute(MavenImpl.java:330) at org.eclipse.m2e.core.internal.embedder.MavenImpl$11.call(MavenImpl.java:1362) at org.eclipse.m2e.core.internal.embedder.MavenImpl$11.call(MavenImpl.java:1) at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:176) at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:112) at org.eclipse.m2e.core.internal.embedder.MavenImpl.execute(MavenImpl.java:1360) at org.eclipse.m2e.core.project.configurator.MojoExecutionBuildParticipant.build(MojoExecutionBuildParticipant.java:52) at org.eclipse.m2e.core.internal.builder.MavenBuilderImpl.build(MavenBuilderImpl.java:137) at org.eclipse.m2e.core.internal.builder.MavenBuilder$1.method(MavenBuilder.java:172) at org.eclipse.m2e.core.internal.builder.MavenBuilder$1.method(MavenBuilder.java:1) at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod$1$1.call(MavenBuilder.java:115) at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:176) at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:112) at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod$1.call(MavenBuilder.java:105) at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:176) at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:151) at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:99) at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod.execute(MavenBuilder.java:86) at org.eclipse.m2e.core.internal.builder.MavenBuilder.build(MavenBuilder.java:200) at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:735) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:206) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:246) at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:301) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:304) at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:360) at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:383) at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:144) at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:235) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) pom.xml中还有这个也报错: ![图片说明](https://img-ask.csdn.net/upload/201707/27/1501125074_482352.png) ![图片说明](https://img-ask.csdn.net/upload/201707/27/1501125081_51583.png) 求教是什么原因,如何解决?

springboot项目启动问题

![图片说明](https://img-ask.csdn.net/upload/201906/26/1561543216_75712.png) 如图 数据库连接设置为本地就启动不起来 停在这里 换为阿里云就启动正常 什么情况 下面这个图片是连接换成阿里云后启动正常 ![图片说明](https://img-ask.csdn.net/upload/201906/26/1561530793_696212.png) 以下是数据库配置: spring.application.name = xmzjcqgl server.port = 8529 spring.datasource.type=com.alibaba.druid.pool.DruidDataSource spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver spring.datasource.url=jdbc:mysql://39.98.209.181:3306/history_as10_order?useUnicode=true&characterEncoding=UTF-8 spring.datasource.username=dog spring.datasource.password=riskdev #spring.datasource.url=jdbc:mysql://localhost:3306/history_as10_order?seSSL=true #spring.datasource.username=root #spring.datasource.password=root #spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver #spring.jpa.properties.hibernate.hbm2ddl.auto=update mybatis.type-aliases-package=com.example.xmzjcqgl.model mybatis.mapper-locations=classpath:mybatis/*.xml maxHttpHeaderSize="1" #编码格式 charset=UTF-8

初学idea,springboot项目不能够正常运行

git上拉了个gradle构建的spirngboot项目,eclipse上拉下来一点事都没有,idea弄下来报这个错 ![图片说明](https://img-ask.csdn.net/upload/201804/10/1523339490_233779.png) 代码真的没错,为啥我却报这个,连运行都不行,刷新过好几次gradle项目,也没用,jar都进来了

mybatis 测试类junit报错,如何解决 mybatis 测试类junit报错,如何解决

package com.jiyun.mybaits.test; import java.io.IOException; import java.io.InputStream; import java.util.List; import org.apache.ibatis.io.Resources; import org.apache.ibatis.session.SqlSession; import org.apache.ibatis.session.SqlSessionFactory; import org.apache.ibatis.session.SqlSessionFactoryBuilder; import org.junit.Test; import com.jiyun.mybaits.pojo.User; public class JunitTest { @Test private void test1() throws IOException { // TODO Auto-generated method stub String resource = "SqlMapConfig.xml"; InputStream inputStream = Resources.getResourceAsStream(resource); SqlSessionFactory sessionFactory = new SqlSessionFactoryBuilder().build(inputStream); SqlSession openSession = sessionFactory.openSession(); List<User> userList = openSession.selectList("test.selectAllUser"); for (User user : userList) { System.out.println(user.getUsername() + "--" + user.getPassword() + "--" + user.getSex()); } openSession.close(); } ![图片说明](https://img-ask.csdn.net/upload/201708/10/1502360297_5263.jpg)

SpringBoot+MyBatis框架的项目,如何进行集成测试?

**@RunWith(SpringJUnit4ClassRunner.class) @SpringBootTest( classes = Application.class, webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT ) @DirtiesContext public class dataOpTest { private TBookController tBookController = new TBookController(); public TBookMapper tBookMapper; @Test public void testIfExistByName(){ String bk_name = "c++"; //int existCount = tBookController.ifExist(bk_name); int result = tBookMapper.existByNameAndState(bk_name); Assert.assertEquals(result, 1); } }** 以上代码,会认为tBookController是空指针,它本身是一个接口,sql实现都在xml文件里面,但是集成测试的时候怎么做?

软件测试入门、SQL、性能测试、测试管理工具

软件测试2小时入门,让您快速了解软件测试基本知识,有系统的了解; SQL一小时,让您快速理解和掌握SQL基本语法 jmeter性能测试 ,让您快速了解主流来源性能测试工具jmeter 测试管理工具-禅道,让您快速学会禅道的使用,学会测试项目、用例、缺陷的管理、

计算机组成原理实验教程

西北工业大学计算机组成原理实验课唐都仪器实验帮助,同实验指导书。分为运算器,存储器,控制器,模型计算机,输入输出系统5个章节

Java 最常见的 200+ 面试题:面试必备

这份面试清单是从我 2015 年做了 TeamLeader 之后开始收集的,一方面是给公司招聘用,另一方面是想用它来挖掘在 Java 技术栈中,还有那些知识点是我不知道的,我想找到这些技术盲点,然后修复它,以此来提高自己的技术水平。虽然我是从 2009 年就开始参加编程工作了,但我依旧觉得自己现在要学的东西很多,并且学习这些知识,让我很有成就感和满足感,那所以何乐而不为呢? 说回面试的事,这份面试...

winfrom中嵌套html,跟html的交互

winfrom中嵌套html,跟html的交互,源码就在里面一看就懂,很简单

玩转Python-Python3基础入门

总课时80+,提供源码和相关资料 本课程从Python零基础到纯Python项目实战。内容详细,案例丰富,覆盖了Python知识的方方面面,学完后不仅对Python知识有个系统化的了解,让你从Python小白变编程大牛! 课程包含: 1.python安装 2.变量、数据类型和运算符 3.选择结构 4.循环结构 5.函数和模块 6.文件读写 7.了解面向对象 8.异常处理

程序员的兼职技能课

获取讲师答疑方式: 在付费视频第一节(触摸命令_ALL)片头有二维码及加群流程介绍 限时福利 原价99元,今日仅需39元!购课添加小助手(微信号:csdn590)按提示还可领取价值800元的编程大礼包! 讲师介绍: 苏奕嘉&nbsp;前阿里UC项目工程师 脚本开发平台官方认证满级(六级)开发者。 我将如何教会你通过【定制脚本】赚到你人生的第一桶金? 零基础程序定制脚本开发课程,是完全针对零脚本开发经验的小白而设计,课程内容共分为3大阶段: ①前期将带你掌握Q开发语言和界面交互开发能力; ②中期通过实战来制作有具体需求的定制脚本; ③后期将解锁脚本的更高阶玩法,打通任督二脉; ④应用定制脚本合法赚取额外收入的完整经验分享,带你通过程序定制脚本开发这项副业,赚取到你的第一桶金!

HoloLens2开发入门教程

本课程为HoloLens2开发入门教程,讲解部署开发环境,安装VS2019,Unity版本,Windows SDK,创建Unity项目,讲解如何使用MRTK,编辑器模拟手势交互,打包VS工程并编译部署应用到HoloLens上等。

基于VHDL的16位ALU简易设计

基于VHDL的16位ALU简易设计,可完成基本的加减、带进位加减、或、与等运算。

MFC一站式终极全套课程包

该套餐共包含从C小白到C++到MFC的全部课程,整套学下来绝对成为一名C++大牛!!!

利用Verilog实现数字秒表(基本逻辑设计分频器练习)

设置复位开关。当按下复位开关时,秒表清零并做好计时准备。在任何情况下只要按下复位开关,秒表都要无条件地进行复位操作,即使是在计时过程中也要无条件地进行清零操作。 设置启/停开关。当按下启/停开关后,将

董付国老师Python全栈学习优惠套餐

购买套餐的朋友可以关注微信公众号“Python小屋”,上传付款截图,然后领取董老师任意图书1本。

Python可以这样学(第一季:Python内功修炼)

董付国系列教材《Python程序设计基础》、《Python程序设计(第2版)》、《Python可以这样学》配套视频,讲解Python 3.5.x和3.6.x语法、内置对象用法、选择与循环以及函数设计与使用、lambda表达式用法、字符串与正则表达式应用、面向对象编程、文本文件与二进制文件操作、目录操作与系统运维、异常处理结构。

计算机操作系统 第三版.pdf

计算机操作系统 第三版 本书全面介绍了计算机系统中的一个重要软件——操作系统(OS),本书是第三版,对2001年出版的修订版的各章内容均作了较多的修改,基本上能反映当前操作系统发展的现状,但章节名称基

技术大佬:我去,你写的 switch 语句也太老土了吧

昨天早上通过远程的方式 review 了两名新来同事的代码,大部分代码都写得很漂亮,严谨的同时注释也很到位,这令我非常满意。但当我看到他们当中有一个人写的 switch 语句时,还是忍不住破口大骂:“我擦,小王,你丫写的 switch 语句也太老土了吧!” 来看看小王写的代码吧,看完不要骂我装逼啊。 private static String createPlayer(PlayerTypes p...

Vue.js 2.0之全家桶系列视频课程

基于新的Vue.js 2.3版本, 目前新全的Vue.js教学视频,让你少走弯路,直达技术前沿! 1. 包含Vue.js全家桶(vue.js、vue-router、axios、vuex、vue-cli、webpack、ElementUI等) 2. 采用笔记+代码案例的形式讲解,通俗易懂

微信公众平台开发入门

本套课程的设计完全是为初学者量身打造,课程内容由浅入深,课程讲解通俗易懂,代码实现简洁清晰。通过本课程的学习,学员能够入门微信公众平台开发,能够胜任企业级的订阅号、服务号、企业号的应用开发工作。 通过本课程的学习,学员能够对微信公众平台有一个清晰的、系统性的认识。例如,公众号是什么,它有什么特点,它能做什么,怎么开发公众号。 其次,通过本课程的学习,学员能够掌握微信公众平台开发的方法、技术和应用实现。例如,开发者文档怎么看,开发环境怎么搭建,基本的消息交互如何实现,常用的方法技巧有哪些,真实应用怎么开发。

150讲轻松搞定Python网络爬虫

【为什么学爬虫?】 &nbsp; &nbsp; &nbsp; &nbsp;1、爬虫入手容易,但是深入较难,如何写出高效率的爬虫,如何写出灵活性高可扩展的爬虫都是一项技术活。另外在爬虫过程中,经常容易遇到被反爬虫,比如字体反爬、IP识别、验证码等,如何层层攻克难点拿到想要的数据,这门课程,你都能学到! &nbsp; &nbsp; &nbsp; &nbsp;2、如果是作为一个其他行业的开发者,比如app开发,web开发,学习爬虫能让你加强对技术的认知,能够开发出更加安全的软件和网站 【课程设计】 一个完整的爬虫程序,无论大小,总体来说可以分成三个步骤,分别是: 网络请求:模拟浏览器的行为从网上抓取数据。 数据解析:将请求下来的数据进行过滤,提取我们想要的数据。 数据存储:将提取到的数据存储到硬盘或者内存中。比如用mysql数据库或者redis等。 那么本课程也是按照这几个步骤循序渐进的进行讲解,带领学生完整的掌握每个步骤的技术。另外,因为爬虫的多样性,在爬取的过程中可能会发生被反爬、效率低下等。因此我们又增加了两个章节用来提高爬虫程序的灵活性,分别是: 爬虫进阶:包括IP代理,多线程爬虫,图形验证码识别、JS加密解密、动态网页爬虫、字体反爬识别等。 Scrapy和分布式爬虫:Scrapy框架、Scrapy-redis组件、分布式爬虫等。 通过爬虫进阶的知识点我们能应付大量的反爬网站,而Scrapy框架作为一个专业的爬虫框架,使用他可以快速提高我们编写爬虫程序的效率和速度。另外如果一台机器不能满足你的需求,我们可以用分布式爬虫让多台机器帮助你快速爬取数据。 &nbsp; 从基础爬虫到商业化应用爬虫,本套课程满足您的所有需求! 【课程服务】 专属付费社群+每周三讨论会+1v1答疑

SEIR课程设计源码与相关城市数据.rar

SEIR结合学报与之前博客结合所做的一些改进,选择其中三个城市进行拟合仿真SEIR结合学报与之前博客结合所做的一些改进,选择其中三个城市进行拟合仿真SEIR结合学报与之前博客结合所做的一些改进,选择其

Python数据挖掘简易入门

&nbsp; &nbsp; &nbsp; &nbsp; 本课程为Python数据挖掘方向的入门课程,课程主要以真实数据为基础,详细介绍数据挖掘入门的流程和使用Python实现pandas与numpy在数据挖掘方向的运用,并深入学习如何运用scikit-learn调用常用的数据挖掘算法解决数据挖掘问题,为进一步深入学习数据挖掘打下扎实的基础。

2019 AI开发者大会

2019 AI开发者大会(AI ProCon 2019)是由中国IT社区CSDN主办的AI技术与产业年度盛会。多年经验淬炼,如今蓄势待发:2019年9月6-7日,大会将有近百位中美顶尖AI专家、知名企业代表以及千余名AI开发者齐聚北京,进行技术解读和产业论证。我们不空谈口号,只谈技术,诚挚邀请AI业内人士一起共铸人工智能新篇章!

Java面试题大全(2020版)

发现网上很多Java面试题都没有答案,所以花了很长时间搜集整理出来了这套Java面试题大全,希望对大家有帮助哈~ 本套Java面试题大全,全的不能再全,哈哈~ 一、Java 基础 1. JDK 和 JRE 有什么区别? JDK:Java Development Kit 的简称,java 开发工具包,提供了 java 的开发环境和运行环境。 JRE:Java Runtime Environ...

定量遥感中文版 梁顺林著 范闻捷译

这是梁顺林的定量遥感的中文版,由范闻捷等翻译的,是电子版PDF,解决了大家看英文费时费事的问题,希望大家下载看看,一定会有帮助的

GIS程序设计教程 基于ArcGIS Engine的C#开发实例

张丰,杜震洪,刘仁义编著.GIS程序设计教程 基于ArcGIS Engine的C#开发实例.浙江大学出版社,2012.05

人工智能-计算机视觉实战之路(必备算法+深度学习+项目实战)

系列课程主要分为3大阶段:(1)首先掌握计算机视觉必备算法原理,结合Opencv进行学习与练手,通过实际视项目进行案例应用展示。(2)进军当下最火的深度学习进行视觉任务实战,掌握深度学习中必备算法原理与网络模型架构。(3)结合经典深度学习框架与实战项目进行实战,基于真实数据集展开业务分析与建模实战。整体风格通俗易懂,项目驱动学习与就业面试。 建议同学们按照下列顺序来进行学习:1.Python入门视频课程 2.Opencv计算机视觉实战(Python版) 3.深度学习框架-PyTorch实战/人工智能框架实战精讲:Keras项目 4.Python-深度学习-物体检测实战 5.后续实战课程按照自己喜好选择就可以

三个项目玩转深度学习(附1G源码)

从事大数据与人工智能开发与实践约十年,钱老师亲自见证了大数据行业的发展与人工智能的从冷到热。事实证明,计算机技术的发展,算力突破,海量数据,机器人技术等,开启了第四次工业革命的序章。深度学习图像分类一直是人工智能的经典任务,是智慧零售、安防、无人驾驶等机器视觉应用领域的核心技术之一,掌握图像分类技术是机器视觉学习的重中之重。针对现有线上学习的特点与实际需求,我们开发了人工智能案例实战系列课程。打造:以项目案例实践为驱动的课程学习方式,覆盖了智能零售,智慧交通等常见领域,通过基础学习、项目案例实践、社群答疑,三维立体的方式,打造最好的学习效果。

微信小程序开发实战之番茄时钟开发

微信小程序番茄时钟视频教程,本课程将带着各位学员开发一个小程序初级实战类项目,针对只看过官方文档而又无从下手的开发者来说,可以作为一个较好的练手项目,对于有小程序开发经验的开发者而言,可以更好加深对小程序各类组件和API 的理解,为更深层次高难度的项目做铺垫。

面试了一个 31 岁程序员,让我有所触动,30岁以上的程序员该何去何从?

最近面试了一个31岁8年经验的程序猿,让我有点感慨,大龄程序猿该何去何从。

去除异常值matlab程序

数据预处理中去除异常值的程序,matlab写成

用verilog HDL语言编写的秒表

在秒表设计中,分模块书写。用在七段数码管上显示。输入频率是1KHZ.可以显示百分秒,秒,分。如要显示小时,只需修改leds里的代码和主模块代码。改程序以通过硬件电路验证。完全正确。

[透视java——反编译、修补和逆向工程技术]源代码

源代码。

相关热词 c#对文件改写权限 c#中tostring c#支付宝回掉 c#转换成数字 c#判断除法是否有模 c# 横向chart c#控件选择多个 c#报表如何锁定表头 c#分级显示数据 c# 不区分大小写替换
立即提问
相关内容推荐