ASP.NET 如何在controller中动态修改自定义过滤器filter的传递参数??

我想在前台页面实现 点击按钮,对前台的相关数据进行放大或缩小对应的倍数,于是自己写个一个filter,但是需要自行控制倍数的大小,所以如何让controller层中对应方法的filter中传递的参数是变量值呢?求教!谢谢。

public class ndfpjhController : ControllerBase
    {
         private double currdw = 1;//想要传递的参数
        [AcceptChangeFilter(Message = "htdl,khbh,mp_no", Number = currdw, indexmes = "listdata")]//此处currdw会报错
        public ActionResult addFpjh(long keyvalue,string listdata)
        {
           //controller 内部操作;
                }
 }

1个回答

你这个需求根本就不应该用filter,直接用参数就可以了。

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
javaweb 用idea配置filter 运行报错

![图片说明](https://img-ask.csdn.net/upload/201812/04/1543897092_196204.png) ![图片说明](https://img-ask.csdn.net/upload/201812/04/1543897124_850922.png) ![图片说明](https://img-ask.csdn.net/upload/201812/04/1543897147_495466.png) ![图片说明](https://img-ask.csdn.net/upload/201812/04/1543897156_805945.png) 报错内容 [2018-12-04 12:09:39,662] Artifact test:war exploded: Artifact is being deployed, please wait... 04-Dec-2018 12:09:40.015 严重 [RMI TCP Connection(3)-127.0.0.1] org.apache.catalina.core.StandardContext.startInternal One or more Filters failed to start. Full details will be found in the appropriate container log file 04-Dec-2018 12:09:40.016 严重 [RMI TCP Connection(3)-127.0.0.1] org.apache.catalina.core.StandardContext.startInternal Context [] startup failed due to previous errors [2018-12-04 12:09:40,029] Artifact test:war exploded: Error during artifact deployment. See server log for details. 04-Dec-2018 12:09:49.433 信息 [ContainerBackgroundProcessor[StandardEngine[Catalina]]] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [D:\tomcat\apache-tomcat-9.0.13\webapps\manager] 04-Dec-2018 12:09:49.486 信息 [ContainerBackgroundProcessor[StandardEngine[Catalina]]] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [D:\tomcat\apache-tomcat-9.0.13\webapps\manager] has finished in [53] ms 代码想实现的功能 记录网站访问人数 一开始没有配置filter 普通的jsp可以运行 servlet也可以运行 现在运行普通的jsp页面也报错 我把web.xml里面的配置信息全删了 和filter没有关联的jsp页面也运行不了 一运行就报上面的错误 求大神解答啊!!

如何使用Golang过滤器构建器过滤空值?

<div class="post-text" itemprop="text"> <p>Carrying on from <a href="https://stackoverflow.com/questions/55898187/how-to-filter-on-null">How to filter on NULL?</a> I am struggling to replicate the Go code to filter for null values of a particular column:</p> <pre><code>import ( "github.com/apex/log" "github.com/aws/aws-sdk-go-v2/aws" "github.com/aws/aws-sdk-go-v2/aws/endpoints" "github.com/aws/aws-sdk-go-v2/aws/external" "github.com/aws/aws-sdk-go-v2/service/dynamodb" "github.com/aws/aws-sdk-go-v2/service/dynamodb/expression" ) // aws --profile dd dynamodb scan --table-name plocal2 --filter-expression 'paymentmethod = :null' --expression-attribute-values '{":null" :{"NULL":true}}' var table = "plocal2" func main() { cfg, err := external.LoadDefaultAWSConfig(external.WithSharedConfigProfile("dd")) if err != nil { log.WithError(err).Fatal("setting up credentials") return } cfg.Region = endpoints.ApSoutheast1RegionID db := dynamodb.New(cfg) filt := expression.Name("paymentmethod").Equal(expression.Value(expression.Null)) expr, err := expression.NewBuilder(). WithFilter(filt). Build() if err != nil { log.WithError(err).Error("failed to build expression") return } scanReq := db.ScanRequest(&amp;dynamodb.ScanInput{ ExpressionAttributeValues: expr.Values(), FilterExpression: expr.Filter(), TableName: aws.String(table), }) result, err := scanReq.Send() if err != nil { log.WithError(err).Error("failed to query table") return } log.Infof("%d", len(result.Items)) } </code></pre> <p>The error is:</p> <pre><code>2019/04/30 16:59:54 error failed to query table error=ValidationException: Invalid FilterExpression: An expression attribute name used in the document path is not defined; attribute name: #0 status code: 400, request id: 8CFTOAGVB7M1IM3DC6BFPEVLUNVV4KQNSO5AEMVJF66Q9ASUAAJG </code></pre> <p>Any tips how to debug this or where I am going wrong using the <a href="https://godoc.org/github.com/aws/aws-sdk-go-v2/service/dynamodb/expression" rel="nofollow noreferrer">expression builder</a>?</p> <p>Really wish there were <a href="https://godoc.org/github.com/aws/aws-sdk-go-v2/service/dynamodb/expression#pkg-examples" rel="nofollow noreferrer">examples</a>, since filtering on NULL should be a pretty common use case to me if one is using <a href="https://godoc.org/github.com/aws/aws-sdk-go-v2/service/dynamodb/dynamodbattribute#MarshalMap" rel="nofollow noreferrer">MarshalMap</a> since empty strings becomes NULLs!</p> </div>

MyEclipse2016修改Web Context-root

MyEclipse2016中如何修改Web Context-root?

未知列和多个返回子查询过滤

<div class="post-text" itemprop="text"> <p>At the moment i have this query:</p> <pre><code>$qry = "SELECT platforms.PID FROM user_profile LEFT JOIN platforms ON platforms.relaccount = user_profile.subkey WHERE user_profile.UID = `".$data['id']."`"; $games = $this-&gt;db-&gt;select('main.APPID, games_other.name, games_other.logo') -&gt;select('platforms.PID, platforms.name AS pname, platforms.logo AS plogo') -&gt;select('('.$qry.') AS filt', null, FALSE) -&gt;from('games_link AS main') -&gt;join('games_platforms', 'games_platforms.APPID = main.APPID', 'left') -&gt;join('platforms', 'platforms.PID = games_platforms.PID', 'left') -&gt;join('games_other', 'games_other.APPID = main.GB_ID', 'left') -&gt;like('games_other.name', $name) -&gt;where('platforms.PID', 'filt') -&gt;limit(15) -&gt;get(); </code></pre> <p>Where im trying to get games based on an input string but filtered by what platforms a user has, but it returns this error: </p> <pre><code>Unknown column 'Cf9nHvOlaaLzFRegX2Il' in 'where clause' SELECT `main`.`APPID`, `games_other`.`name`, `games_other`.`logo`, `platforms`.`PID`, `platforms`.`name` AS pname, `platforms`.`logo` AS plogo, (SELECT platforms.PID FROM user_profile LEFT JOIN platforms ON platforms.reaccount = user_profile.subkey WHERE user_profile.UID = `Cf9nHvOlaaLzFRegX2Il`) AS filt FROM (`games_link` AS main) LEFT JOIN `games_platforms` ON `games_platforms`.`APPID` = `main`.`APPID` LEFT JOIN `platforms` ON `platforms`.`PID` = `games_platforms`.`PID` LEFT JOIN `games_other` ON `games_other`.`APPID` = `main`.`GB_ID` WHERE `platforms`.`PID` = 'filt' AND `games_other`.`name` LIKE '%a%' LIMIT 15 Filename: response/update.php </code></pre> <p>I have tried changing a few things around but nothing fixes this.</p> <p>Also since I Havant been able to get there yet, would this work as a filter. The sub query will return multiple.</p> </div>

如何在程序崩溃时自动生成堆栈跟踪

<div class="post-text" itemprop="text"> <p>I am working on Linux with the GCC compiler. When my C++ program crashes I would like it to automatically generate a stacktrace.</p> <p>My program is being run by many different users and it also runs on Linux, Windows and Macintosh (all versions are compiled using <code>gcc</code>).</p> <p>I would like my program to be able to generate a stack trace when it crashes and the next time the user runs it, it will ask them if it is ok to send the stack trace to me so I can track down the problem. I can handle the sending the info to me but I don't know how to generate the trace string. Any ideas?</p> </div> <p>转载于:https://stackoverflow.com/questions/77005/how-to-automatically-generate-a-stacktrace-when-my-program-crashes</p>

JAVA 如何 在MySQL 服务停止后 再开始时继续连接它

MySQL 服务有时会自动停止,然后再运行 当它停止时 我的JAVA程序会报 com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure的错误 程序是一直反复读取数据库信息的,而当抛出这个错误后,就是MySQL的服务启动了,程序也无法读取数据库了,请问该怎么解决呢?我没有使用框架,麻烦各位了,谢谢。

没有进行筛选,scrapy-Request callback不调用,跪求大神指点!!!

Spider的代码是这样的: ``` def parse(self, response): url_list = response.xpath('//a/@href').extract()[0] for single_url in url_list: url = 'https:' + single_url.xpath('./@href').extract()[0] name = single_url.xpath('./text()').extract()[0] yield scrapy.Request(url=url, callback=self.parse_get, meta={'url':url, 'name':name}) def parse_get(self, response): print(1) item = MySpiderItem() item['name'] = response.mate['name'] item['url'] = response.mate['url'] yield item ``` middlewares的代码是这样的: ``` def process_request(self, request, spider): self.driver = webdriver.Chrome() self.driver.get(request.url) if 'anime' in request.meta: element = WebDriverWait(self.driver, 10).until(EC.presence_of_element_located((By.ID, 'header'))) else: element = WebDriverWait(self.driver, 10).until(EC.presence_of_element_located((By.ID, 'header'))) html = self.driver.page_source self.driver.quit() return scrapy.http.HtmlResponse(url=request.url, body=html, request=request, encoding='utf-8') ``` 我是用Chrome来运行的,Request里面的url是一个一个地打开了,但是一直没有调用parse_get。一直都没有加allowed_domains,也尝试过在Request中加dont_filter=True,但是网站能打开,证明应该不是网站被过滤了的问题。实在是没有想法了,求大神指导!!!!

大神来看看,本来好好的但是导到另一台电脑上就报错了

java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:450) at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:289) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:252) at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246) at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:167) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246) at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265) at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246) at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246) at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:239) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246) at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:239) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246) at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246) at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246) at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246) at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:252) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246) at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246) at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246) at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246) at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246) at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:161) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246) at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246) at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246) at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246) at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54) at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:563) at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77) at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378) at org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109) at org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109) at org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.ui.SessionFixationProtectionFilter.doFilterHttp(SessionFixationProtectionFilter.java:67) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.ui.ExceptionTranslationFilter.doFilterHttp(ExceptionTranslationFilter.java:101) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.providers.anonymous.AnonymousProcessingFilter.doFilterHttp(AnonymousProcessingFilter.java:105) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.ui.rememberme.RememberMeProcessingFilter.doFilterHttp(RememberMeProcessingFilter.java:116) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.wrapper.SecurityContextHolderAwareRequestFilter.doFilterHttp(SecurityContextHolderAwareRequestFilter.java:91) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.ui.basicauth.BasicProcessingFilter.doFilterHttp(BasicProcessingFilter.java:174) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.ui.webapp.DefaultLoginPageGeneratingFilter.doFilterHttp(DefaultLoginPageGeneratingFilter.java:86) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.ui.AbstractProcessingFilter.doFilterHttp(AbstractProcessingFilter.java:278) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.ui.AbstractProcessingFilter.doFilterHttp(AbstractProcessingFilter.java:278) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilte

如何解决eclipse unable to find an ant file to run

如何解决eclipse unable to find an ant file to run

DynamoDB多个过滤条件,给出错误-buildTree错误:未设置参数:ConditionBuilder

<div class="post-text" itemprop="text"> <p>I am building REST APIs, using Lambda and DynamoDB in GO.</p> <p>I need to query the data based on multiple filters.</p> <p>The number of filters can be varying based on the number of query parameters user has provided, while calling the REST API.</p> <p>As per the below post, I had developed the code to add multiple conditions.</p> <p><a href="https://stackoverflow.com/questions/53073212/aws-sdk-for-go-dynamodb-add-multiple-conditions-to-filterexpression">AWS SDK for Go - DynamoDb - Add multiple conditions to FilterExpression</a></p> <p>But when I invoke the function, I get below error, in the logs.- </p> <blockquote> <p>buildTree error: unset parameter: ConditionBuilder</p> </blockquote> <p>The Filter expression is not applied and the scan returns all the results.</p> <p>Here is the code snippet.</p> <pre><code>for queryParam, queryParamValue := range searchParams { fmt.Println("queryParam:", queryParam, "=&gt;", "queryParamValue:", queryParamValue) if queryParam == “param1” { param1Condition = expression.Name(“param1”).Equal(expression.Value(queryParamValue)) } if queryParam == “param2” { param2Condition = expression.Name(“param2”).Equal(expression.Value(queryParamValue)) } } sampleExpr, errSample := expression.NewBuilder(). WithCondition(param1Condition.Or(param2Condition)). Build() if errSample != nil { fmt.Println("Error in building Sample Expr ", errSample) } else { fmt.Println("sampleExpr ", sampleExpr) } input := &amp;dynamodb.ScanInput{ ExpressionAttributeNames: sampleExpr.Names(), ExpressionAttributeValues: sampleExpr.Values(), FilterExpression: sampleExpr.Filter(), TableName: aws.String(deviceInfotable), } </code></pre> <p>But if I create the expression in different way, it works.</p> <pre><code>filt := expression.Name("param1").Equal(expression.Value("valu1")).Or(expression.Name("param2").Equal(expression.Value("value2"))) </code></pre> </div>

springmvc 上传MultipartFile

# 直接看代码,如果前台页面不带有上传文件,就进不了controller, ``` @RequestMapping(value="/addApplicationFile") public void addApplicationFile( ApplicationFile applicationFile,HttpServletRequest request,HttpServletResponse response,@RequestParam(value="file", required=false) MultipartFile file){ Map<String, Object> resultMap = new HashMap<String,Object>(); boolean localUploadStatus = false; boolean ftpUploadStatus = false; OptionsItems optionsItems = null; Long userId = null; FtpFileList ftpFileList = null; try { userId = SystemUtil.getUserId(request); //设置请求编码 if( null == userId ){ SystemUtil.userInvalid(request, response); return; } if( null == applicationFile || null == applicationFile.getFileName() || applicationFile.getFileName().equals("") || null == applicationFile.getApplicationVersion() || applicationFile.getApplicationVersion().equals("") || null == applicationFile.getApplicationName() || applicationFile.getApplicationName().equals("") || null == applicationFile.getFileType() || applicationFile.getFileType().equals("") ){ resultMap.put(Constant.SHRG_STATUS, Constant.RESULT_STATUS_ERROR); resultMap.put(Constant.SHRG_MESSAGE, Constant.REQUEST_PARAM_ERROR); SystemUtil.outputJsonObject(resultMap, response); return; } int length = applicationFileService.validateApplicationName(applicationFile); if(length>0){ resultMap.put(Constant.SHRG_FLAG, Constant.RESULT_STATUS_FLAG); resultMap.put(Constant.SHRG_MESSAGE, Constant.APPLICATION_FILE_IS_EXIST); SystemUtil.outputJsonObject(resultMap, response); return; } //先上传再入库 if (null != file && !file.isEmpty()) { //文件上传路径 StringBuffer realPath = new StringBuffer();//tomcat相对路径 realPath.append(Constant.PATH_SEPARATOR_SLASH).append(Constant.PATH_APPLICATION_UPLOAD);//PATH_APPLICATION_UPLOADnew String(Constant.PATH_APPLICATION_UPLOAD.getBytes("GBK"),"iso-8859-1") //在数据得到上传的类型 optionsItems = new OptionsItems(); optionsItems.setModule(Constant.INFO_DIFF); optionsItems.setOptionCode(Constant.APP_UPLOAD_FILE_TYPE); List<OptionsItems> listO = optionsItemsService.initOptionsItem(optionsItems); optionsItems = new OptionsItems(); optionsItems.setModule(Constant.TER); optionsItems.setOptionCode(Constant.SOFTWARE_UPDATE_FILE_TYPE); List<OptionsItems> listT = optionsItemsService.initOptionsItem(optionsItems); //执行上传 if(applicationFile.getUploadType() != null && Constant.UPLOAD_TYPE_A.equals(applicationFile.getUploadType())){ String fileType = listO.get(0).getAttribute1(); fileType = fileType.replaceAll("\\.", ""); ftpFileList = FileUpload.upload(file,realPath.toString(), fileType,request); }else{ String fileType = listT.get(0).getAttribute1(); fileType = fileType.replaceAll("\\.", ""); ftpFileList = FileUpload.upload(file,realPath.toString(),fileType,request); } if(null !=ftpFileList) localUploadStatus = true; ftpUploadStatus = FtpManager.getInstance().uploadFile(ftpFileList.getPath(), ftpFileList.getFtpFilename(), ftpFileList.getFtpPath()); FileUtil.delFile(ftpFileList.getPath(),ftpFileList.getFtpFilename());//删除本地文件 applicationFile.setFileSize(ftpFileList.getFileSize()+""); applicationFile.setFileType(ftpFileList.getFileSuffix()); applicationFile.setFtpFileName(ftpFileList.getFtpFilename()); applicationFile.setFtpFilePath(ftpFileList.getFtpPath()+Constant.PATH_SEPARATOR_SLASH); applicationFile.setCreatedBy(userId); applicationFile.setLastUpdateBy(userId); //文件上传之后,再将文件 入库 applicationFileService.addApplicationFile(applicationFile); resultMap.put(Constant.SHRG_STATUS, Constant.RESULT_STATUS_SUCCESS); resultMap.put(Constant.SHRG_MESSAGE, Constant.ADD_SUCCESS); }else{ resultMap.put(Constant.SHRG_STATUS, Constant.RESULT_STATUS_ERROR); resultMap.put(Constant.SHRG_MESSAGE, Constant.UPLOAD_FILE_IS_NULL); } SystemUtil.outputJsonObject(resultMap, response); }catch(Exception ex){ ex.printStackTrace(); if(ftpUploadStatus){ String deletePath = ftpFileList.getFtpPath()+Constant.PATH_SEPARATOR_SLASH +ftpFileList.getFtpFilename(); try { FtpManager.getInstance().removeFile(deletePath); } catch (Exception e) { int resultCodeA = ShrgLog.exceptionLogMap(this, Constant.ERROR_LEVEL, Constant.INFO_DIFFUSION_PUBLISH, Constant.ADD_UPLOAD_APPLICATION_FILT, e,userId); SystemUtil.exceptionHandle(response, resultCodeA); } }else if(localUploadStatus){ FileUtil.delFile(ftpFileList.getPath(),ftpFileList.getFtpFilename());//删除本地文件 } int resultCode = ShrgLog.exceptionLogMap(this, Constant.ERROR_LEVEL, Constant.INFO_DIFFUSION_PUBLISH, Constant.ADD_UPLOAD_APPLICATION_FILT, ex,userId); SystemUtil.exceptionHandle(response, resultCode); } ```

调用Dubbo服务报以下错误,原因和解决办法

用mvn 创建了一个子项目jar dubbo filter,在生产者中<dubbo:service filter="xxx" >无法调用,报 No such extension xxx for filter/com.alibaba.dubbo.rpc.Filter

如何使用按钮在多个条件下搜索数据(如果)?

<div class="post-text" itemprop="text"> <p>i have a problem, i cant use one button to search in many condition. i mean i have 3 searching boxs, and i fill its with things that i want to search. when i hit the button search it doesnt work. </p> <h1>this is the form to fill something that you wanna search.</h1> <p></p> <pre><code> &lt;form class="form-inline" method="post" enctype="multipart/form-data"&gt; &lt;input class="form-control " type="text" name="pnm" placeholder="Search P/N" onkeyup="this.value = this.value.toUpperCase()" style="width: 250px;text-align: center; margin:10px; text-transform:uppercase; " &gt; &lt;/input&gt; &lt;button style="background-color:#668cff" class="btn btn-rounded btn-primary " type="submit" data-toggle="popover" data-trigger="hover" data-placement="bottom" data-content="Search"&gt;&lt;i class="fa fa-search"&gt;&lt;/i&gt;&lt;/button&gt; &lt;form class="form-inline" method="post" enctype="multipart/form-data"&gt; &lt;input class="form-control " type="text" name="req" placeholder="Search RQ" onkeyup="this.value = this.value.toUpperCase()" style="width: 250px;text-align: center; margin:10px; text-transform:uppercase; " &gt; &lt;/input&gt; &lt;button style="background-color:#ffff66" class="btn btn-rounded btn-primary " type="submit" data-toggle="popover" data-trigger="hover" data-placement="bottom" data-content="Search"&gt;&lt;i class="fa fa-search"&gt;&lt;/i&gt;&lt;/button&gt; &lt;div class="col-sm-5 form-inline"&gt; &lt;p align="left"&gt;&lt;label class="col-sm-7 control-label"&gt;Status&lt;/label&gt;&lt;/p&gt; &lt;p align="left"&gt;&lt;select name="status" class="custom-select"&gt;&lt;/p&gt; &lt;option value=""&gt;&lt;none&gt;&lt;/option&gt; &lt;option value="OPEN"&gt;Open&lt;/option&gt; &lt;option value="CLOSED"&gt;Closed&lt;/option&gt; &lt;/select&gt; </code></pre> <p> </p> <h1>this is if else condition</h1> <p> </p><pre><code> $ornum=''; $orline=''; $stat=''; $pnm = $_POST['pnm']; $stat = $_POST['status']; $filt=''; if (isset($_REQUEST['req']) &amp;&amp; $_REQUEST['req']!=''){$filt = ' and c.requisition =\''. $_POST['req'].'\'';} else {$req = '';} if (isset($tgl_awal1) &amp;&amp; isset($tgl_akhir1)) {$filt = " and D.CREATED_DATE BETWEEN TO_DATE('$tgl_awal1', 'yyyy-mm-dd') AND TO_DATE('$tgl_akhir1', 'yyyy-mm-dd')";} else {$req = '';} if (isset($_REQUEST['submit_btn'])) { $stat = $_POST['status'];} // if (isset($_REQUEST['submit_btn'])) { $stat = $_POST['status'];} </code></pre> </div>

适用于Go的AWS开发工具包-DynamoDb-向FilterExpression添加多个条件

<div class="post-text" itemprop="text"> <p>I am attempting to filter a DynamoDb scan by multiple conditions using the expression builder. According to this <a href="https://aws.amazon.com/blogs/developer/introducing-amazon-dynamodb-expression-builder-in-the-aws-sdk-for-go/" rel="nofollow noreferrer">blog post</a>, attempting to add another condition in the builder will overwrite the previous condition. There must be some way to add another condition, but I have not been able to find a way to do it. </p> <h2>This won't work</h2> <pre><code>cond1 := expression.Name("foo").Equal(expression.Value(5)) cond2 := expression.Name("bar").Equal(expression.Value(6)) expr, err := expression.NewBuilder(). WithCondition(cond1). WithCondition(cond2). Build() if err != nil { fmt.Println(err) </code></pre> <p>}</p> <h2>This is a working example with a single filter</h2> <pre><code>filt := expression.Name("Artist").Equal(expression.Value("No One You Know")) proj := expression.NamesList( expression.Name("SongTitle"), expression.Name("AlbumTitle"), ) expr, err := expression.NewBuilder(). WithFilter(filt). WithProjection(proj). Build() if err != nil { fmt.Println(err) } input := &amp;dynamodb.ScanInput{ ExpressionAttributeNames: expr.Names(), ExpressionAttributeValues: expr.Values(), FilterExpression: expr.Filter(), ProjectionExpression: expr.Projection(), TableName: aws.String("Music"), } </code></pre> <p>I have been able to accomplish this without using the expression buidler, but I would prefer to use the expression builder. How could I add another condition to that filter?</p> </div>

使用php中的LDAP用户从Active Directory自动完成文本框

<div class="post-text" itemprop="text"> <p>I am trying to autocomplete a field that picks names of users from LDAP. My codes are as follows : </p> <p><strong>index.php</strong></p> <p></p><div class="snippet" data-lang="js" data-hide="false" data-console="false" data-babel="false"> <div class="snippet-code"> <pre class="snippet-code-js lang-js prettyprint-override"><code>$(document).ready(function() { $("#search-box").keyup(function() { $.ajax({ type: "POST", url: "readCountry.php", data: 'keyword=' + $(this).val(), beforeSend: function() { $("#search-box").css("background", "#FFF url(LoaderIcon.gif) no-repeat 165px"); }, success: function(data) { $("#suggesstion-box").show(); $("#suggesstion-box").html(data); $("#search-box").css("background", "#FFF"); } }); }); }); function selectCountry(val) { $("#search-box").val(val); $("#suggesstion-box").hide(); }</code></pre> <pre class="snippet-code-css lang-css prettyprint-override"><code>body { width: 610px; } .frmSearch { border: 1px solid #F0F0F0; background-color: #C8EEFD; margin: 2px 0px; padding: 40px; } #country-list { float: left; list-style: none; margin: 0; padding: 0; width: 190px; } #country-list li { padding: 10px; background: #FAFAFA; border-bottom: #F0F0F0 1px solid; } #country-list li:hover { background: #F0F0F0; } #search-box { padding: 10px; border: #F0F0F0 1px solid; }</code></pre> <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;html&gt; &lt;head&gt; &lt;TITLE&gt;jQuery AJAX Autocomplete - Country Example&lt;/TITLE&gt; &lt;head&gt; &lt;body&gt; &lt;div class="frmSearch"&gt; &lt;input type="text" id="search-box" placeholder="Country Name" /&gt; &lt;div id="suggesstion-box"&gt;&lt;/div&gt; &lt;/div&gt; &lt;/body&gt; &lt;/html&gt;</code></pre> </div> </div> <p><strong>readCountry.php</strong></p> <pre><code> &lt;?php if(!empty($_POST["keyword"])) { $Name=$_POST["keyword"]; $username="********"; $password="********"; $lc = ldap_connect("********") or die("Couldn't connect to AD!"); ldap_set_option($lc, LDAP_OPT_PROTOCOL_VERSION, 3); ldap_bind($lc,$username,$password); $base = "OU=********,DC=********,DC=********"; $filt = "(&amp;(&amp;(&amp;(objectCategory=person)(objectClass=user)(name=$Name*))))"; $sr = @ldap_search($lc, $base, $filt); $info = ldap_get_entries($lc, $sr); for ($i = 0; $i &lt; $info["count"]; $i++) { $info[$i]["cn"][0] ; } if ($i == 0) { echo "No matches found!"; } if(!empty($info[$i]["cn"][0])) { ?&gt; &lt;ul id="country-list"&gt; &lt;?php foreach($info[$i]["cn"][0] as $country) { ?&gt; &lt;li onClick="selectCountry('&lt;?php echo $country ?&gt;');"&gt;&lt;?php echo $country ?&gt;&lt;/li&gt; &lt;?php } ?&gt; &lt;/ul&gt; &lt;?php } } ?&gt; </code></pre> <p><strong>What I have :</strong> </p> <p>This isn't returning names from LDAP nor is there any error that is dispalyed for me to fix it.</p> <p><strong>What I need :</strong> </p> <p><a href="https://i.stack.imgur.com/SZ5i7.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/SZ5i7.png" alt="enter image description here"></a></p> <p>When A is typed, all the names starting with 'A' should be shown in the dropdown. </p> <p>Appreciate any help :) Thanks in advance! :)</p> </div>

相关选择输入

<div class="post-text" itemprop="text"> <p>Can anybody help me on this. For showing the rezults from an MySql database i have to select school, class, subject, and exam. But listing all the classes or all the exams is not very practical so i want to do another function that when i choose some schools in the first select box it shows me in the second select box only the classes of the selected schools.</p> <p>My code is:</p> <pre><code> &lt;div id="allselects"&gt; &lt;form action="viewing.php" method="post" name="filt"&gt; &lt;div class="multsarrange"&gt; &lt;h1 class="choosetext" &gt;Chose Schools&lt;/h1&gt; &lt;select class="multipleselect" name="schools[]" size="8" multiple="multiple" id="shkll"&gt; &lt;?php $sql = "SELECT * FROM schools "; $scc=mysql_query($sql); while ($db_f = mysql_fetch_assoc($scc)) { $schcd=$db_f['schoolcode']; $schc=$db_f['schoolname']; echo "&lt;option value=$schcd &gt;$schc&lt;/option&gt;"; } ?&gt; &lt;/select&gt; &lt;/div&gt; &lt;div class="multsarrange" id="clasaajax"&gt; &lt;h1 class="choosetext" &gt;Chose an Classes&lt;/h1&gt; &lt;select class="multipleselect" name="classes[]" size="8" multiple="multiple" "&gt; &lt;?php $c = "SELECT * FROM classes "; $cl=mysql_query($c); while ($db_f = mysql_fetch_assoc($cl)) { $clsc=$db_f['schoolID']; $claid=$db_f['classID']; $clay=$db_f['year']; $clanm=$db_f['className']; $name=schoolidton($clsc)." ".$clay." ".$clanm; echo "&lt;option value=$claid &gt;$name&lt;/option&gt;"; } ?&gt; &lt;/select&gt; &lt;/div&gt; &lt;div class="multsarrange"&gt; &lt;h1 class="choosetext" &gt;Chose Subjects&lt;/h1&gt; &lt;select class="multipleselect" name="subjects[]" size="8" multiple="multiple"&gt; &lt;?php $sb = "SELECT * FROM subjects "; $sbi=mysql_query($sb); while ($db_f = mysql_fetch_assoc($sbi)) { $sbnm=$db_f['subjectName']; $sbid=$db_f['subjectID']; echo "&lt;option value=$sbid &gt;$sbnm&lt;/option&gt;"; } ?&gt; &lt;/select&gt; &lt;/div&gt; &lt;div class="multsarrange"&gt; &lt;h1 class="choosetext" &gt;Chose Exams&lt;/h1&gt; &lt;select class="multipleselect" name="exams[]" size="8" multiple="multiple"&gt; &lt;?php $e = "SELECT * FROM exams "; $ex=mysql_query($e); while ($db_f = mysql_fetch_assoc($ex)) { $id=$db_f['examID']; $sub=$db_f['subjectID']; $desc=$db_f['description']; $year=$db_f['year']; $data=$db_f['data']; $exnam=subidton($sub)." - ".$year." - ".$desc." - ".$data; echo "&lt;option value=$id &gt;$exnam&lt;/option&gt;"; } ?&gt; &lt;/select&gt; &lt;/div&gt; &lt;div id="longsubmit"&gt; &lt;/br&gt;&lt;/br&gt; &lt;input name="submit" type="submit" value="View" /&gt; &lt;/div&gt; &lt;/form&gt; &lt;/div&gt; </code></pre> </div>

buffer overflow detected arm-linux-ar terminated

系统是ubuntu14.04 LTS gcc版本是4.4 步骤是这样: 先安装了binutils-2.15 ../configure --target=arm-linux --prefix=定义的安装目录 make make install 这个折腾了好久,成功安装好了 之后进行arm-linx-gcc制作 ../configure --target=arm-linux --prefix=定义的安装目录 --enable-language=c --disable-threads --disable-shared make 在make部分就出现了 *** buffer overflow detected ***: arm-linux-ar terminated ======= Backtrace: ========= /lib/x86_64-linux-gnu/libc.so.6(+0x741cf)[0x2b19ddccf1cf] /lib/x86_64-linux-gnu/libc.so.6(__fortify_fail+0x5c)[0x2b19ddd66b2c] /lib/x86_64-linux-gnu/libc.so.6(+0x10a9f0)[0x2b19ddd659f0] /lib/x86_64-linux-gnu/libc.so.6(+0x109ef9)[0x2b19ddd64ef9] /lib/x86_64-linux-gnu/libc.so.6(_IO_default_xsputn+0xbc)[0x2b19ddcd754c] /lib/x86_64-linux-gnu/libc.so.6(_IO_padn+0xa0)[0x2b19ddccb510] /lib/x86_64-linux-gnu/libc.so.6(_IO_vfprintf+0x3c5d)[0x2b19ddca8bfd] /lib/x86_64-linux-gnu/libc.so.6(__vsprintf_chk+0x84)[0x2b19ddd64f84] /lib/x86_64-linux-gnu/libc.so.6(__sprintf_chk+0x7d)[0x2b19ddd64edd] arm-linux-ar[0x409524] arm-linux-ar[0x407781] arm-linux-ar[0x409dcd] arm-linux-ar[0x40d597] arm-linux-ar[0x40405f] arm-linux-ar[0x40453f] arm-linux-ar[0x405017] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0x2b19ddc7cec5] arm-linux-ar[0x401cf9] ======= Memory map: ======== 00400000-00459000 r-xp 00000000 08:0b 61558 /home/kanata/armlinux/tools/bin/arm-linux-ar 00658000-00659000 r--p 00058000 08:0b 61558 /home/kanata/armlinux/tools/bin/arm-linux-ar 00659000-0065a000 rw-p 00059000 08:0b 61558 /home/kanata/armlinux/tools/bin/arm-linux-ar 0065a000-0065e000 rw-p 00000000 00:00 0 020f6000-0236a000 rw-p 00000000 00:00 0 [heap] 2b19dda36000-2b19dda59000 r-xp 00000000 08:0c 786434 /lib/x86_64-linux-gnu/ld-2.19.so 2b19dda59000-2b19dda5b000 rw-p 00000000 00:00 0 2b19dda5b000-2b19dda62000 r--s 00000000 08:0c 392357 /usr/lib/x86_64-linux-gnu/gconv/gconv-modules.cache 2b19dda62000-2b19dda6d000 rw-p 00000000 00:00 0 2b19dda6f000-2b19dda72000 rw-p 00000000 00:00 0 2b19ddc58000-2b19ddc59000 r--p 00022000 08:0c 786434 /lib/x86_64-linux-gnu/ld-2.19.so 2b19ddc59000-2b19ddc5a000 rw-p 00023000 08:0c 786434 /lib/x86_64-linux-gnu/ld-2.19.so 2b19ddc5a000-2b19ddc5b000 rw-p 00000000 00:00 0 2b19ddc5b000-2b19dde17000 r-xp 00000000 08:0c 786458 /lib/x86_64-linux-gnu/libc-2.19.so 2b19dde17000-2b19de016000 ---p 001bc000 08:0c 786458 /lib/x86_64-linux-gnu/libc-2.19.so 2b19de016000-2b19de01a000 r--p 001bb000 08:0c 786458 /lib/x86_64-linux-gnu/libc-2.19.so 2b19de01a000-2b19de01c000 rw-p 001bf000 08:0c 786458 /lib/x86_64-linux-gnu/libc-2.19.so 2b19de01c000-2b19de021000 rw-p 00000000 00:00 0 2b19de021000-2b19de703000 r--p 00000000 08:0c 138526 /usr/lib/locale/locale-archive 2b19de703000-2b19de719000 r-xp 00000000 08:0c 807277 /lib/x86_64-linux-gnu/libgcc_s.so.1 2b19de719000-2b19de918000 ---p 00016000 08:0c 807277 /lib/x86_64-linux-gnu/libgcc_s.so.1 2b19de918000-2b19de919000 rw-p 00015000 08:0c 807277 /lib/x86_64-linux-gnu/libgcc_s.so.1 7fffd333d000-7fffd3360000 rw-p 00000000 00:00 0 [stack] 7fffd33fe000-7fffd3400000 r-xp 00000000 00:00 0 [vdso] ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall] make[2]: *** [libgcc.a] 已放弃 (core dumped) make[2]: *** 正在删除文件“libgcc.a” make[2]:正在离开目录 `/home/kanata/armlinux/build-tools/build-gcc/gcc' make[1]: *** [libgcc.a] 错误 2 make[1]:正在离开目录 `/home/kanata/armlinux/build-tools/build-gcc/gcc' make: *** [all-gcc] 错误 2 请问有高手解决过这种问题吗,说下我知道的可能性: 1.gcc版本过高,好友有尝试低版本的gcc编译通过的 2.我尝试过安装了4.1,但是configure的时候出现的问题是找不到crt1.o,之后export了crt1.o的路径的时候又出现 -lgcc_s.o找不到的问题==` 想放弃的时候尝试过的替代方案是直接下载别人做好的arm-linux-gcc工具包,但是按照配置弄的时候,却出现: kanata@blue:~$ arm arm2hpdl arm-linux-gcc arm-linux-objdump arm-linux-addr2line arm-linux-gcc-3.4.5 arm-linux-ranlib arm-linux-ar arm-linux-gccbug arm-linux-readelf arm-linux-as arm-linux-gcov arm-linux-size arm-linux-c++ arm-linux-gprof arm-linux-strings arm-linux-c++filt arm-linux-ld arm-linux-strip arm-linux-cpp arm-linux-nm arm-linux-g++ arm-linux-objcopy kanata@blue:~$ arm-linux-gcc -v bash: /home/kanata/gcc-3.4.5-glibc-2.3.6/bin/arm-linux-gcc: 没有那个文件或目录 能有什么解决办法吗?

大学四年自学走来,这些私藏的实用工具/学习网站我贡献出来了

大学四年,看课本是不可能一直看课本的了,对于学习,特别是自学,善于搜索网上的一些资源来辅助,还是非常有必要的,下面我就把这几年私藏的各种资源,网站贡献出来给你们。主要有:电子书搜索、实用工具、在线视频学习网站、非视频学习网站、软件下载、面试/求职必备网站。 注意:文中提到的所有资源,文末我都给你整理好了,你们只管拿去,如果觉得不错,转发、分享就是最大的支持了。 一、电子书搜索 对于大部分程序员...

在中国程序员是青春饭吗?

今年,我也32了 ,为了不给大家误导,咨询了猎头、圈内好友,以及年过35岁的几位老程序员……舍了老脸去揭人家伤疤……希望能给大家以帮助,记得帮我点赞哦。 目录: 你以为的人生 一次又一次的伤害 猎头界的真相 如何应对互联网行业的「中年危机」 一、你以为的人生 刚入行时,拿着傲人的工资,想着好好干,以为我们的人生是这样的: 等真到了那一天,你会发现,你的人生很可能是这样的: ...

Java基础知识面试题(2020最新版)

文章目录Java概述何为编程什么是Javajdk1.5之后的三大版本JVM、JRE和JDK的关系什么是跨平台性?原理是什么Java语言有哪些特点什么是字节码?采用字节码的最大好处是什么什么是Java程序的主类?应用程序和小程序的主类有何不同?Java应用程序与小程序之间有那些差别?Java和C++的区别Oracle JDK 和 OpenJDK 的对比基础语法数据类型Java有哪些数据类型switc...

我以为我学懂了数据结构,直到看了这个导图才发现,我错了

数据结构与算法思维导图

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...

和黑客斗争的 6 天!

互联网公司工作,很难避免不和黑客们打交道,我呆过的两家互联网公司,几乎每月每天每分钟都有黑客在公司网站上扫描。有的是寻找 Sql 注入的缺口,有的是寻找线上服务器可能存在的漏洞,大部分都...

Linux 会成为主流桌面操作系统吗?

整理 |屠敏出品 | CSDN(ID:CSDNnews)2020 年 1 月 14 日,微软正式停止了 Windows 7 系统的扩展支持,这意味着服役十年的 Windows 7,属于...

讲一个程序员如何副业月赚三万的真实故事

loonggg读完需要3分钟速读仅需 1 分钟大家好,我是你们的校长。我之前讲过,这年头,只要肯动脑,肯行动,程序员凭借自己的技术,赚钱的方式还是有很多种的。仅仅靠在公司出卖自己的劳动时...

学习总结之HTML5剑指前端(建议收藏,图文并茂)

前言学习《HTML5与CSS3权威指南》这本书很不错,学完之后我颇有感触,觉得web的世界开明了许多。这本书是需要有一定基础的web前端开发工程师。这本书主要学习HTML5和css3,看...

女程序员,为什么比男程序员少???

昨天看到一档综艺节目,讨论了两个话题:(1)中国学生的数学成绩,平均下来看,会比国外好?为什么?(2)男生的数学成绩,平均下来看,会比女生好?为什么?同时,我又联想到了一个技术圈经常讨...

搜狗输入法也在挑战国人的智商!

故事总是一个接着一个到来...上周写完《鲁大师已经彻底沦为一款垃圾流氓软件!》这篇文章之后,鲁大师的市场工作人员就找到了我,希望把这篇文章删除掉。经过一番沟通我先把这篇文章从公号中删除了...

副业收入是我做程序媛的3倍,工作外的B面人生是怎样的?

提到“程序员”,多数人脑海里首先想到的大约是:为人木讷、薪水超高、工作枯燥…… 然而,当离开工作岗位,撕去层层标签,脱下“程序员”这身外套,有的人生动又有趣,马上展现出了完全不同的A/B面人生! 不论是简单的爱好,还是正经的副业,他们都干得同样出色。偶尔,还能和程序员的特质结合,产生奇妙的“化学反应”。 @Charlotte:平日素颜示人,周末美妆博主 大家都以为程序媛也个个不修边幅,但我们也许...

MySQL数据库面试题(2020最新版)

文章目录数据库基础知识为什么要使用数据库什么是SQL?什么是MySQL?数据库三大范式是什么mysql有关权限的表都有哪几个MySQL的binlog有有几种录入格式?分别有什么区别?数据类型mysql有哪些数据类型引擎MySQL存储引擎MyISAM与InnoDB区别MyISAM索引与InnoDB索引的区别?InnoDB引擎的4大特性存储引擎选择索引什么是索引?索引有哪些优缺点?索引使用场景(重点)...

新一代神器STM32CubeMonitor介绍、下载、安装和使用教程

关注、星标公众号,不错过精彩内容作者:黄工公众号:strongerHuang最近ST官网悄悄新上线了一款比较强大的工具:STM32CubeMonitor V1.0.0。经过我研究和使用之...

记一次腾讯面试,我挂在了最熟悉不过的队列上……

腾讯后台面试,面试官问:如何自己实现队列?

如果你是老板,你会不会踢了这样的员工?

有个好朋友ZS,是技术总监,昨天问我:“有一个老下属,跟了我很多年,做事勤勤恳恳,主动性也很好。但随着公司的发展,他的进步速度,跟不上团队的步伐了,有点...

我入职阿里后,才知道原来简历这么写

私下里,有不少读者问我:“二哥,如何才能写出一份专业的技术简历呢?我总感觉自己写的简历太烂了,所以投了无数份,都石沉大海了。”说实话,我自己好多年没有写过简历了,但我认识的一个同行,他在阿里,给我说了一些他当年写简历的方法论,我感觉太牛逼了,实在是忍不住,就分享了出来,希望能够帮助到你。 01、简历的本质 作为简历的撰写者,你必须要搞清楚一点,简历的本质是什么,它就是为了来销售你的价值主张的。往深...

冒泡排序动画(基于python pygame实现)

本项目效果初始截图如下 动画见本人b站投稿:https://www.bilibili.com/video/av95491382 本项目对应github地址:https://github.com/BigShuang python版本:3.6,pygame版本:1.9.3。(python版本一致应该就没什么问题) 样例gif如下 ======================= 大爽歌作,mad

Redis核心原理与应用实践

Redis核心原理与应用实践 在很多场景下都会使用Redis,但是到了深层次的时候就了解的不是那么深刻,以至于在面试的时候经常会遇到卡壳的现象,学习知识要做到系统和深入,不要把Redis想象的过于复杂,和Mysql一样,是个读取数据的软件。 有一个理解是Redis是key value缓存服务器,更多的优点在于对value的操作更加丰富。 安装 yum install redis #yum安装 b...

现代的 “Hello, World”,可不仅仅是几行代码而已

作者 |Charles R. Martin译者 | 弯月,责编 | 夕颜头图 |付费下载自视觉中国出品 | CSDN(ID:CSDNnews)新手...

带了6个月的徒弟当了面试官,而身为高级工程师的我天天修Bug......

即将毕业的应届毕业生一枚,现在只拿到了两家offer,但最近听到一些消息,其中一个offer,我这个组据说客户很少,很有可能整组被裁掉。 想问大家: 如果我刚入职这个组就被裁了怎么办呢? 大家都是什么时候知道自己要被裁了的? 面试软技能指导: BQ/Project/Resume 试听内容: 除了刷题,还有哪些技能是拿到offer不可或缺的要素 如何提升面试软实力:简历, 行为面试,沟通能...

!大部分程序员只会写3年代码

如果世界上都是这种不思进取的软件公司,那别说大部分程序员只会写 3 年代码,恐怕就没有程序员这种职业。

离职半年了,老东家又发 offer,回不回?

有小伙伴问松哥这个问题,他在上海某公司,在离职了几个月后,前公司的领导联系到他,希望他能够返聘回去,他很纠结要不要回去? 俗话说好马不吃回头草,但是这个小伙伴既然感到纠结了,我觉得至少说明了两个问题:1.曾经的公司还不错;2.现在的日子也不是很如意。否则应该就不会纠结了。 老实说,松哥之前也有过类似的经历,今天就来和小伙伴们聊聊回头草到底吃不吃。 首先一个基本观点,就是离职了也没必要和老东家弄的苦...

2020阿里全球数学大赛:3万名高手、4道题、2天2夜未交卷

阿里巴巴全球数学竞赛( Alibaba Global Mathematics Competition)由马云发起,由中国科学技术协会、阿里巴巴基金会、阿里巴巴达摩院共同举办。大赛不设报名门槛,全世界爱好数学的人都可参与,不论是否出身数学专业、是否投身数学研究。 2020年阿里巴巴达摩院邀请北京大学、剑桥大学、浙江大学等高校的顶尖数学教师组建了出题组。中科院院士、美国艺术与科学院院士、北京国际数学...

为什么你不想学习?只想玩?人是如何一步一步废掉的

不知道是不是只有我这样子,还是你们也有过类似的经历。 上学的时候总有很多光辉历史,学年名列前茅,或者单科目大佬,但是虽然慢慢地长大了,你开始懈怠了,开始废掉了。。。 什么?你说不知道具体的情况是怎么样的? 我来告诉你: 你常常潜意识里或者心理觉得,自己真正的生活或者奋斗还没有开始。总是幻想着自己还拥有大把时间,还有无限的可能,自己还能逆风翻盘,只不是自己还没开始罢了,自己以后肯定会变得特别厉害...

HTTP与HTTPS的区别

面试官问HTTP与HTTPS的区别,我这样回答让他竖起大拇指!

程序员毕业去大公司好还是小公司好?

虽然大公司并不是人人都能进,但我仍建议还未毕业的同学,尽力地通过校招向大公司挤,但凡挤进去,你这一生会容易很多。 大公司哪里好?没能进大公司怎么办?答案都在这里了,记得帮我点赞哦。 目录: 技术氛围 内部晋升与跳槽 啥也没学会,公司倒闭了? 不同的人脉圈,注定会有不同的结果 没能去大厂怎么办? 一、技术氛围 纵观整个程序员技术领域,哪个在行业有所名气的大牛,不是在大厂? 而且众所...

男生更看重女生的身材脸蛋,还是思想?

往往,我们看不进去大段大段的逻辑。深刻的哲理,往往短而精悍,一阵见血。问:产品经理挺漂亮的,有点心动,但不知道合不合得来。男生更看重女生的身材脸蛋,还是...

程序员为什么千万不要瞎努力?

本文作者用对比非常鲜明的两个开发团队的故事,讲解了敏捷开发之道 —— 如果你的团队缺乏统一标准的环境,那么即使勤劳努力,不仅会极其耗时而且成果甚微,使用...

为什么程序员做外包会被瞧不起?

二哥,有个事想询问下您的意见,您觉得应届生值得去外包吗?公司虽然挺大的,中xx,但待遇感觉挺低,马上要报到,挺纠结的。

面试阿里p7,被按在地上摩擦,鬼知道我经历了什么?

面试阿里p7被问到的问题(当时我只知道第一个):@Conditional是做什么的?@Conditional多个条件是什么逻辑关系?条件判断在什么时候执...

终于懂了TCP和UDP协议区别

终于懂了TCP和UDP协议区别

无代码时代来临,程序员如何保住饭碗?

编程语言层出不穷,从最初的机器语言到如今2500种以上的高级语言,程序员们大呼“学到头秃”。程序员一边面临编程语言不断推陈出新,一边面临由于许多代码已存在,程序员编写新应用程序时存在重复“搬砖”的现象。 无代码/低代码编程应运而生。无代码/低代码是一种创建应用的方法,它可以让开发者使用最少的编码知识来快速开发应用程序。开发者通过图形界面中,可视化建模来组装和配置应用程序。这样一来,开发者直...

立即提问
相关内容推荐