spring boot中找不到jsp 20C

查了一天了也没查到问题,我配置了mvc的前缀和后缀,可就是返回不了jsp,是打的war包有问题吗,
还是缺少什么web的包,它只会报Circular view path [/main]: would dispatch back to the current handler URL [/main] again. Check your ViewResolver setup! (Hint: This may be the result of an unspecified view, due to default view name generation.),实在是查不到怎么解决了,照着springboot的官方web例子改也不行,直接返回了字符串而不是jsp页面,真心求各位帮帮忙。

yml配置文件里的源码

 mvc:
 view:
  prefix: /WEB-INF/jsp/
  suffix: .jsp

gradle的依赖包引入

 compile 'org.springframework.boot:spring-boot-starter-data-jpa'
    compile 'org.springframework.boot:spring-boot-starter-freemarker'
    compile 'org.springframework.boot:spring-boot-starter-groovy-templates'
    compile 'org.springframework.boot:spring-boot-starter-jdbc'
    compile 'com.h2database:h2:1.4.190'
    compile 'com.alibaba:fastjson:1.2.7'
    compile 'com.google.guava:guava:18.0'
    compile 'org.springframework.boot:spring-boot-starter-redis'
    compile 'org.springframework.boot:spring-boot-starter-web'
//  compile 'org.springframework.boot:spring-boot-starter-jetty'
    compile 'org.springframework.boot:spring-boot-starter-tomcat'
    compile 'org.apache.tomcat.embed:tomcat-embed-jasper'
    compile 'javax.servlet:jstl'
    compile 'org.apache.directory.studio:org.apache.commons.lang:2.6'
    compile 'commons-io:commons-io:2.4'
    compile 'mysql:mysql-connector-java'
    testCompile 'org.springframework.boot:spring-boot-starter-test'
    compile 'org.springframework.boot:spring-boot-starter-data-rest'
    compile 'org.springframework.boot:spring-boot-configuration-processor'
    compile 'com.googlecode.xmemcached:xmemcached:2.0.0'

controller

 @RequestMapping("/main")
    public ModelAndView welcome1() {
        logger.error("111111111111111")
        return new ModelAndView("/main")
    }

日志能打出来,但是这个main.jsp找不到
war包的目录结构
图片说明

又去查了一下,视频和例子都在说引入
compile 'org.springframework.boot:spring-boot-starter-tomcat'
compile 'org.apache.tomcat.embed:tomcat-embed-jasper'
两个依赖后,注释为@Controller,直接return字符串类型的jsp名就可以
可就是还是不行,ViewResolver好像没有设置

4个回答

spring-boot:run

spring boot 使用jsp的时候需要用jar包跑必须要在编译的时候将jsp编译到jar里面.
.
<!-- 打包时将jsp文件拷贝到META-INF目录下-->

<!-- 指定resources插件处理哪个目录下的资源文件 -->
src/main/webapp
<!--注意此次必须要放在此目录下才能被访问到-->
META-INF/resources

/

springboot不支持jsp 如果想jsp的话 不能打成jar包 只能打成war包 并且在tomcat中运行

ylsf2008
ylsf2008 可以直接运行,有例子
2 年多之前 回复
u011377803
l清水 正解。springboot 书上也是这么说的
大约 3 年之前 回复

配置文件没配对吧
<?xml version="1.0" encoding="UTF-8"?>
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd">

<!-- scan the package and the sub package -->
<context:component-scan base-package="test.SpringMVC"/>

<!-- don't handle the static resource -->
<mvc:default-servlet-handler />

<!-- if you use annotation you must configure following setting -->
<mvc:annotation-driven />

<!-- configure the InternalResourceViewResolver -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"
        id="internalResourceViewResolver">
    <!-- 前缀 -->
    <property name="prefix" value="/WEB-INF/jsp/" />
    <!-- 后缀 -->
    <property name="suffix" value=".jsp" />
</bean>

http://www.admin10000.com/document/6436.html

h183288132
业余选手 回复Roc_strong: 哦,那你检查一下ViewResolver,和你要跳转的路径对不对吧
大约 4 年之前 回复
qq_28394425
Roc_strong 用的springboot,不用配其他配置文件的,那些可以运行的也只配了sprigboot的一个配置文件
大约 4 年之前 回复
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userService.userlogin(); Iterator iter = huser.iterator(); while(iter.hasNext()){ Huser ha = (Huser) iter.next(); if(username.equals(ha.getHuser())) { if(userpwd.equals(ha.getHpwd())) { return "redirect:/tiao1"; } else { return "redirect:/tiao"; } } } return "redirect:/tiao"; } } ``` ## services代码: ``` package com.mall.shopping.demo.services; import com.mall.shopping.demo.dao.UserDao; import com.mall.shopping.demo.vo.Huser; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; @Service public class UserService { @Autowired private UserDao userDao; public List<Huser> userlogin(){ return userDao.userlogin();} } ``` ## daoceng代码: ``` package com.mall.shopping.demo.dao; import com.mall.shopping.demo.vo.Huser; import org.apache.ibatis.annotations.Mapper; import org.springframework.stereotype.Repository; import java.util.List; @Repository @Mapper public interface UserDao { List<Huser>userlogin(); } ``` ## mybatitsconfig: ``` <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <!-- 开启驼蜂标识:last_name lastName --> <settings> <setting name="mapUnderscoreToCamelCase" value="true"/> </settings> <!-- 实体Bean别名 --> <typeAliases> <package name="com.mall.shopping.demo.vo.Huser"/> <package name="com.mall.shopping.demo.vo.Hdaohang"/> </typeAliases> <mappers> <mapper resource="mapper/select-login.xml"/> <mapper resource="mapper/select-hdaohang.xml"/> </mappers> </configuration> ``` ## xml代码: ``` <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.mall.shopping.demo.dao.UserDao"> <resultMap id="SelectLogin" type="com.mall.shopping.demo.vo.Huser"> <id property="hid" column="HID"></id> <result property="huser" column="HUSER"></result> <result property="hpwd" column="HPWD"></result> </resultMap> <select id="userlogin" resultMap="SelectLogin"> select * from huser </select> </mapper> ``` ## application.properties ``` server.port=8083 server.address=127.0.0.1 #server.session-timeout=60 spring.datasource.url=jdbc:oracle:thin:@127.0.0.1:1521:orcl spring.datasource.username=scott spring.datasource.password=tiger spring.datasource.driver-class-name=oracle.jdbc.OracleDriver mybatis.mapperLocations=classpath:mapper/*.xml mybatis.config-locations=classpath:mybatis/mybatis-config.xml spring.mvc.view.prefix=/WEB-INF/views/ spring.mvc.view.suffix=.jsp ``` ## pom文件: ``` <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.7.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.mall.shopping</groupId> <artifactId>demo</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <name>demo</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.compiler.source>1.7</maven.compiler.source> <maven.compiler.target>1.7</maven.compiler.target> <spring.version>5.1.5.RELEASE</spring.version> <!-- mybatis版本号 --> <mybatis.version>3.4.5</mybatis.version> <!-- oracle驱动版本号 --> <oracle-driver.version>11.2.0</oracle-driver.version> <!-- log4j日志包版本号 --> <slf4j.version>1.7.18</slf4j.version> <log4j.version>1.2.17</log4j.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-webflux</artifactId> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>2.1.0</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>io.projectreactor</groupId> <artifactId>reactor-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version> <scope>test</scope> </dependency> <!-- 添加spring核心库 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-oxm</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> <!-- 添加mybatis依赖 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> <!-- mybatis/spring包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.0</version> </dependency> <!-- oracle驱动依赖 --> <dependency> <groupId>com.oracle</groupId> <artifactId>ojdbc6</artifactId> <version>${oracle-driver.version}</version> </dependency> <!-- dbcp,用来在spring-mybatis.xml中配置数据库 --> <dependency> <groupId>commons-dbcp</groupId> <artifactId>commons-dbcp</artifactId> <version>1.2.2</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4j.version}</version> </dependency> <dependency> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-core</artifactId> <version>1.3.5</version> </dependency> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-mapper-asl</artifactId> <version>1.9.12</version> </dependency> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-core-asl</artifactId> <version>1.9.12</version> </dependency> <dependency> <groupId>org.xmlunit</groupId> <artifactId>xmlunit-core</artifactId> </dependency> <!-- <dependency> <groupId>com.mchange</groupId> <artifactId>c3p0</artifactId> <version>0.9.5.2</version> </dependency>--> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> </dependency> <!--用于编译jsp --> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> <scope>provided</scope> </dependency> <!--添加热部署--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <optional>true</optional> <scope>true</scope> </dependency> <dependency> <groupId>com.h2database</groupId> <artifactId>h2</artifactId> <scope>runtime</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> <plugin> <artifactId>maven-clean-plugin</artifactId> <version>3.1.0</version> </plugin> <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --> <plugin> <artifactId>maven-resources-plugin</artifactId> <version>3.0.2</version> </plugin> <plugin> <artifactId>maven-compiler-plugin</artifactId> <version>3.8.0</version> </plugin> <plugin> <artifactId>maven-surefire-plugin</artifactId> <version>2.22.1</version> </plugin> <plugin> <artifactId>maven-war-plugin</artifactId> <version>3.2.2</version> </plugin> <plugin> <artifactId>maven-install-plugin</artifactId> <version>2.5.2</version> </plugin> <plugin> <artifactId>maven-deploy-plugin</artifactId> <version>2.8.2</version> </plugin> <!--热部署配置--> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <!--fork:如果没有该项配置,整个devtools不会起作用--> <fork>true</fork> </configuration> </plugin> <!-- <plugin> <groupId>org.eclipse.m2e</groupId> <artifactId>lifecycle-mapping</artifactId> <version>1.0.0</version> <configuration> <lifecycleMappingMetadata> <pluginExecutions> <pluginExecution> <pluginExecutionFilter> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-enforcer-plugin</artifactId> <versionRange>[1.2,)</versionRange> <goals> <goal>enforce</goal> </goals> </pluginExecutionFilter> <action> <ignore /> </action> </pluginExecution> </pluginExecutions> </lifecycleMappingMetadata> </configuration> </plugin>--> <!--mybatis 逆向工程插件--> <plugin> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-maven-plugin</artifactId> <version>1.3.5</version> <configuration> <configurationFile>src/main/resources/mybatis-generator/generatorConfig.xml</configurationFile> <verbose>true</verbose> <overwrite>true</overwrite> </configuration> <executions> <execution> <id>Generate MyBatis Artifacts</id> <goals> <goal>generate</goal> </goals> </execution> </executions> <dependencies> <dependency> <groupId>com.oracle</groupId> <artifactId>ojdbc6</artifactId> <version>${oracle-driver.version}</version> <scope>runtime</scope> </dependency> <dependency> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-core</artifactId> <version>1.3.5</version> </dependency> </dependencies> </plugin> </plugins> <!-- <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.xml</include> </includes> </resource> <resource> <directory>src/main/resources</directory> </resource> </resources>--> <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> </resources> </build> </project> ``` ## 目录结构: ![图片说明](https://img-ask.csdn.net/upload/201910/10/1570672730_102043.jpg)

springboot使用jsp的时候需要引用配置,但是有个疑问

我自己还没有尝试,但是请教一下大神们 spring.mvc.view.prefix=/WEB-INF/jsp spring.mvc.view.suffix=.jsp 当我配置好后,是不是所有的jsp文件都要放在jsp文件夹里?我想分几个文件来装是不是访问不到?? 比如下图 ![图片说明](https://img-ask.csdn.net/upload/201909/19/1568884812_538881.jpg)

spring boot 访问HTML 总是有缓存,如何修改前端页面实时生效

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spring获取不到在线用户数,列表为空,getAllPrincipals()获取不到

XML是照着文档编写的,启动也没报错![图片说明](https://img-ask.csdn.net/upload/201510/21/1445393044_736599.png) ``` <custom-filter position="CONCURRENT_SESSION_FILTER" ref="concurrencyFilter" /> <!-- 增加一个自定义的filter,放在FILTER_SECURITY_INTERCEPTOR之前, 实现用户、角色、权限、资源的数据库管理。 --> <custom-filter ref="myFilter" before="FILTER_SECURITY_INTERCEPTOR"/> <session-management invalid-session-url="/jsp/common/sessionTimeout.jsp" session-authentication-strategy-ref="sas"/> <beans:bean id="concurrencyFilter" class="org.springframework.security.web.session.ConcurrentSessionFilter"> <beans:property name="sessionRegistry" ref="sessionRegistry" /> <beans:property name="expiredUrl" value="/jsp/common/session-expired.jsp" /> <beans:property name="logoutHandlers"> <beans:list> <beans:ref local="logoutHandler"/> </beans:list> </beans:property> </beans:bean> <!-- 注销监听器 --> <beans:bean id="logoutHandler" class="org.springframework.security.web.authentication.logout.SecurityContextLogoutHandler"> <beans:property name="InvalidateHttpSession" value="true" /> </beans:bean> <beans:bean id="sas" class="org.springframework.security.web.authentication.session.ConcurrentSessionControlStrategy"> <beans:constructor-arg name="sessionRegistry" ref="sessionRegistry" /> <beans:property name="maximumSessions" value="1" /> </beans:bean> <beans:bean id="sessionRegistry" class="org.springframework.security.core.session.SessionRegistryImpl"/> ``` 然后写了一个controller,方法如下 ``` @Autowired PermissionService permissionService; @Autowired @Qualifier("sessionRegistry") SessionRegistry sessionRegistry; //@Resource(name="sessionRegistry") ///private SessionRegistryImpl sessionRegistry; /** * 强制让用户下线 * @throws Exception */ @RequestMapping("/shotOff") @ResponseBody public Map<String, Object> shotOff(String username) throws Exception{ Map<String, Object> map = new HashMap<String, Object>(); SysUsersCustom sysUsersCustom = new SysUsersCustom(); sysUsersCustom.setUserAccount(username); SysUsersCustom users = permissionService.selectLoginerInfoByUserAccount(sysUsersCustom, username); //用户列表 List<Object> userList=sessionRegistry.getAllPrincipals(); for(int i=0; i<userList.size(); i++){ User userTemp=(User) userList.get(i); if(userTemp.getUsername().equals(username)) { List<SessionInformation> sessionInformationList = sessionRegistry.getAllSessions(userTemp, false); if (sessionInformationList!=null) { for (SessionInformation sis : sessionInformationList) { sis.expireNow(); sessionRegistry.removeSessionInformation(sis.getSessionId()); String remark=userTemp.getUsername()+"被管理员"+Common.findAuthenticatedUsername()+"踢出"; //loginLogService.logoutLog(userTemp, sessionId, remark); //记录注销日志和减少在线用户1个 //logger.info(userTemp.getId()+" "+userTemp.getName()+"用户会话销毁," + remark); System.out.print(remark); } map.put("status", "y"); map.put("info", "强制下线成功!"); }else{ map.put("status", "n"); map.put("info", "用户会话信息不存在!"); } }else{ map.put("status", "n"); map.put("info", "记录表中不存在当前用户!"); } } return map; } ``` 但sessionRegistry.getAllPrincipals()一直获取不到在线用户数,不知道问题出在哪里

springBoot使用注解注入失败

**useMapper的xml文件** ``` <mapper namespace="com.auto.dao.UserMapper"> <select id="findByName" parameterType="String" resultType="User"> select * from t_user where username=#{username} </select> </mapper> ``` **mapper接口代码** ``` public interface UserMapper { public User findByName(String username); } ``` **springboot启动类的代码** ``` @SpringBootApplication @MapperScan("com.auto.dao") public class App { public static void main(String[] args) { SpringApplication.run(App.class,args); } } ``` **pom.xml文件配置** ``` <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.10.RELEASE</version> </parent> <groupId>com.auto</groupId> <artifactId>MavenDay01</artifactId> <version>0.0.1-SNAPSHOT</version> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <!-- spirngBoot启动器 --> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <!-- jstl --> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> </dependency> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.1</version> </dependency> ``` **user的实体类** ``` @Repository public class User { private String username; private String password; public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } @Override public String toString() { return "User [username=" + username + ", password=" + password + "]"; } } ``` **这是properties的配置文件** ``` spring.datasource.driverClassName=com.mysql.jdbc.Driver spring.datasource.url=jdbc:mysql://localhost:3306/mysql spring.datasource.username=root spring.datasource.password=123456 spring.datasource.type=com.alibaba.druid.pool.DruidDataSource mybatis.type-aliases-package=com.auto.entity 实体类和mapper.xml文件都在这包里面 server.port=9090 spring.mvc.view.prefix=/WEB-INF/jsp/ spring.mvc.view.suffix=.jsp ``` **我写了个service接口,然后写了个实现类重写findByName方法返回userMapper中方法,在实现类中注入了userMapper接口,这里无法使用@Autowired注入** ``` @Service @Transactional public class UserServiceImpl implements UserService{ @Resource UserMapper userMapper; @Override public User findByName(String username) { return userMapper.findByName(username); } } ``` **报错** ``` org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.auto.dao.UserMapper.findByName ``` 总是报找不到接口,加上注解标记也没用,换成在接口上用@mapper注解也不行,是什么问题,我在网上看说有什么依赖包冲突问题,但我换了几个版本也不行; **问题已经解决:** 问题出在没有在properties文件中添加mapper.xml文件的扫描路径 解决办法:在properties文件中加上 mybatis.mapper-locations=com/.../.../*.xml 这里是mapper.xml文件的路径

为什么我spring mvc视图解析器一直404?

这是我的Application ``` package cn.edu.bzu.chapter9; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication(scanBasePackages = "cn.edu.bzu.chapter9") public class Chapter9Application { public static void main(String[] args) { SpringApplication.run(Chapter9Application.class, args); } } ``` 这是我的controller ``` package cn.edu.bzu.chapter9.controller; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; @Controller public class FoodController { @RequestMapping("/index") public String index(){ return "index"; } } ``` 这是我的配置文件 ``` spring.mvc.view.prefix=/WEB-INF/jsp/ spring.mvc.view.suffix=.jsp ``` 这是我的项目结构 ![图片说明](https://img-ask.csdn.net/upload/201906/27/1561633944_771999.png) 这是我的pop.xml ``` <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.6.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>cn.edu.bzu</groupId> <artifactId>chapter9</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <name>chapter9</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjrt</artifactId> <version>${aspectj.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> <scope>provided</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project> ```

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程序员在一个周末的时间,得了重病,差点当场去世,还好及时挽救回来了。

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