struts2文件上传大小限制问题小结(引用)

最后解决办法:

  1. 页面js控制上传文件的大小,在页面进行控制。如下代码 inputs是所有文本上传input DOM
    •     //名称信息
          var nameStr='';
          //大小信息
          var sizeStr='';
          inputs.each(function(i,n){
              //文件名路径
              var name =n.value;
              //获取文件名
              var index = name.lastIndexOf('\\');
              name = name.substring(index+1,name.length);
              //拼接文件名
              nameStr +=name+',';
              if(n.files[0]){
                  var size=n.files[0].size;
                  var sizeNum = size/1048576;
                  if(sizeNum<10){
                      sizeNum=sizeNum.toFixed(3);
                  }else if(sizeNum<100){
                      sizeNum=sizeNum.toFixed(2);
                  }else{
                      sizeNum=sizeNum.toFixed(1);
                  }
                  fileAry.push({'name':name,'size':sizeNum});
                  sizeStr +=sizeNum+"M,";
              }
          });
          //去掉逗号
          nameStr=nameStr.substring(0,nameStr.length-1);
          //去掉逗号
          sizeStr=sizeStr.substring(0,sizeStr.length-1);

       

 

 


 

 

转自:http://www.cnblogs.com/godtrue/p/4311486.html

一:首先看一下程序执行中出现的对应报错信息,如下所示:

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[WARN ] 2015-03-03 15:31:11 :Unable to parse request
    org.apache.commons.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (78871114) exceeds the configured maximum (52428800)
    at org.apache.commons.fileupload.FileUploadBase$FileItemIteratorImpl.<init>(FileUploadBase.java:937)
    at org.apache.commons.fileupload.FileUploadBase.getItemIterator(FileUploadBase.java:331)
    at org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:351)
    at org.apache.struts2.dispatcher.multipart.JakartaMultiPartRequest.parseRequest(JakartaMultiPartRequest.java:151)
    at org.apache.struts2.dispatcher.multipart.JakartaMultiPartRequest.processUpload(JakartaMultiPartRequest.java:90)
    at org.apache.struts2.dispatcher.multipart.JakartaMultiPartRequest.parse(JakartaMultiPartRequest.java:80)
    at org.apache.struts2.dispatcher.multipart.MultiPartRequestWrapper.<init>(MultiPartRequestWrapper.java:75)
    at org.apache.struts2.dispatcher.Dispatcher.wrapRequest(Dispatcher.java:740)
    at org.apache.struts2.dispatcher.ng.PrepareOperations.wrapRequest(PrepareOperations.java:131)
    at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:83)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at com.frame.action.ChineseFilter.doFilter(ChineseFilter.java:66)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
    at java.lang.Thread.run(Thread.java:619)
[WARN ] 2015-03-03 15:31:11 :Could not find token name in params.
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类似的问题相信很多人都遇到过,也晓得如何解决,我这里记录下来也是为了让自己对这个问题理解的更好一点,当然,我下面记录的情况都是在我的机器上实际都试验了的,下面是我根据自己的实验以及网上的相关资料的小结。

 

二:限制Struts2文件上传的三种情况

     1:Struts2对应的配置文件中的配置的限制

          struts.multipart.maxSize=上传文件的最大值(单位是字节)这个配置是控制整个项目一次性上传的文件的最大值!如果实际上传的文件超过了此配置的大小那么就会报  org.apache.commons.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (78871114) exceeds the configured maximum (52428800),这个异常信息!

这个配置有对应的默认值,如果不设置则使用默认的设置(针对我自己的项目这个默认配置的所在位置是:struts2-core-2.3.1.2.jar包中的org\apache\struts2\default.properties文件中)struts.multipart.maxSize=2097152,代表默认上传的文件最大值是2M,如果我们想修改它也是很容易的,有以下两种方式:

1)在struts.properties文件中配置,比如:struts.multipart.maxSize=52428800 (代表上传的文件的最大值是50M)

2)在struts.xml文件中配置,比如:<constant name="struts.multipart.maxSize" value="52428800"/>(也代表上传的文件的最大值是50M)

 

     2:Struts2对应的文件上传的拦截器的限制

        <interceptor-ref name="fileUpload">                
              <param name="maximumSize">52428800</param>                
        </interceptor-ref>

 

        这种方式是限制特定的Action的一种方式,当然她是在满足第一种情况下才起作用的,换言之,这里的配置要小于第一种情况的设置才能起到对应的作用!

需要注意的是,拦截器的使用以及和第一种文件上传之间的配合,情况如下(下面的代码仅仅是事例代码而已):

        2-1:没有拦截器的情况,仅第一种限制起作用

        <action name="fileUpload" class="fileUploadAction" method="fileUpload">        
        </action>  

        2-2:仅使用默认的拦截器的情况,和2-1的效果一样,它们两个的本质是一样的,因为Struts2会每个Action加入一个默认的拦截器,显示说明与否皆可!

        <action name="fileUpload" class="fileUploadAction" method="fileUpload">    
            <interceptor-ref name="defaultStack"></interceptor-ref>                 
        </action> 

        2-3:仅使用文件上传的拦截器的情况,第一种限制起作用,第二种限制也有效果,不过这种使用拦截器的方式是有问题的,这里仅仅使用了文件上传的拦截器而已,导致数据信息的丢失!当实际上传的文件大于拦截器的配置的时候,会报([WARN ] 2015-03-03 18:49:44 :File too large: fileUploadModel.upload "test.png" "upload_6e4dba7d_14be260bb68__7fe3_00000018.tmp" 11185361)不过程序会继续的执行!

        <action name="fileUpload" class="fileUploadAction" method="fileUpload">  
            <interceptor-ref name="fileUpload">                
                  <param name="maximumSize">10485760</param>                
            </interceptor-ref>               
        </action>  

  

        2-4:先使用文件上传的拦截器,再使用默认的拦截器的情况,第一种限制起作用,第二种限制也起作用,并且当实际上传的文件的大小超过拦截器的限制时,程序会报错([WARN ] 2015-03-03 18:53:30 :File too large: fileUploadModel.upload "test.png" "upload_53477faa_14bdea02616__7fef_00000008.tmp" 11185361)且程序会终止执行(调试的结果显示没有进入相应的Action类中)!

        <action name="fileUpload" class="fileUploadAction" method="fileUpload"> 
            <interceptor-ref name="fileUpload">                
                  <param name="maximumSize">10485760</param>                
            </interceptor-ref>              
            <interceptor-ref name="defaultStack"></interceptor-ref>                 
        </action>  

 

        2-5:先使用默认的拦截器,再使用文件上传的拦截器的情况,第一种限制起作用,第二种限制也起作用,不过当超过拦截器的限制时,程序会报错([WARN ] 2015-03-03 18:58:30 :File too large: fileUploadModel.upload "test.png" "upload_53477faa_14bdea02616__7fef_00000008.tmp" 11185361)不过仍继续的执行!

        <action name="fileUpload" class="fileUploadAction" method="fileUpload">             
            <interceptor-ref name="defaultStack"></interceptor-ref>                 
            <interceptor-ref name="fileUpload">                
                  <param name="maximumSize">10485760</param>                
            </interceptor-ref>              
        </action>  

 

    3:上传文件的最大限制

          文件上传的最大值应<2G,无论前面两项配置的是多大,当实际上传的文件大小大于2G的时候就会出现如下图的情况:

针对这个情况,我还不明白是什么原因引起的,如果有清楚的请告知一下,非常感谢!

 

三:对应的源码的情况

     第一种限制对应的关键性源码(位置:commons-fileupload-1.2.2.jar包下\org\apache\commons\fileupload\FileUploadBase.java)

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FileItemIteratorImpl(RequestContext ctx)
      throws FileUploadException, IOException
    {
      if (ctx == null) {
        throw new NullPointerException("ctx parameter");
      }

      String contentType = ctx.getContentType();
      if ((null == contentType) || (!contentType.toLowerCase().startsWith("multipart/")))
      {
        throw new FileUploadBase.InvalidContentTypeException("the request doesn't contain a multipart/form-data or multipart/mixed stream, content type header is " + contentType);
      }

      InputStream input = ctx.getInputStream();

      if (FileUploadBase.this.sizeMax >= 0L) {
        int requestSize = ctx.getContentLength();
        if (requestSize == -1)
          input = new LimitedInputStream(input, FileUploadBase.this.sizeMax, FileUploadBase.this) { private final FileUploadBase val$this$0;

            protected void raiseError(long pSizeMax, long pCount) throws IOException { FileUploadException ex = new FileUploadBase.SizeLimitExceededException("the request was rejected because its size (" + pCount + ") exceeds the configured maximum" + " (" + pSizeMax + ")", pCount, pSizeMax);

              throw new FileUploadBase.FileUploadIOException(ex);
            }
          };
        //看这里
else if ((FileUploadBase.this.sizeMax >= 0L) && (requestSize > FileUploadBase.this.sizeMax)) { throw new FileUploadBase.SizeLimitExceededException("the request was rejected because its size (" + requestSize + ") exceeds the configured maximum (" + FileUploadBase.this.sizeMax + ")", requestSize, FileUploadBase.this.sizeMax); } } String charEncoding = FileUploadBase.this.headerEncoding; if (charEncoding == null) { charEncoding = ctx.getCharacterEncoding(); } this.boundary = FileUploadBase.this.getBoundary(contentType); if (this.boundary == null) { throw new FileUploadException("the request was rejected because no multipart boundary was found"); } this.notifier = new MultipartStream.ProgressNotifier(FileUploadBase.this.listener, ctx.getContentLength()); this.multi = new MultipartStream(input, this.boundary, this.notifier); this.multi.setHeaderEncoding(charEncoding); this.skipPreamble = true; findNextItem(); }
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     第二种限制对应的关键性源码(位置:struts2-core-2.3.1.2.jar包下\org\apache\struts2\interceptor\FileUploadInterceptor.java)

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  protected boolean acceptFile(Object action, File file, String filename, String contentType, String inputName, ValidationAware validation, Locale locale)
  {
    boolean fileIsAcceptable = false;

    if (file == null) {
      String errMsg = getTextMessage(action, "struts.messages.error.uploading", new Object[] { inputName }, locale);
      if (validation != null) {
        validation.addFieldError(inputName, errMsg);
      }

      if (LOG.isWarnEnabled())
        LOG.warn(errMsg, new String[0]);
    }
    //看这里
else if ((this.maximumSize != null) && (this.maximumSize.longValue() < file.length())) { String errMsg = getTextMessage(action, "struts.messages.error.file.too.large", new Object[] { inputName, filename, file.getName(), "" + file.length() }, locale); if (validation != null) { validation.addFieldError(inputName, errMsg); } if (LOG.isWarnEnabled()) LOG.warn(errMsg, new String[0]); } else if ((!this.allowedTypesSet.isEmpty()) && (!containsItem(this.allowedTypesSet, contentType))) { String errMsg = getTextMessage(action, "struts.messages.error.content.type.not.allowed", new Object[] { inputName, filename, file.getName(), contentType }, locale); if (validation != null) { validation.addFieldError(inputName, errMsg); } if (LOG.isWarnEnabled()) LOG.warn(errMsg, new String[0]); } else if ((!this.allowedExtensionsSet.isEmpty()) && (!hasAllowedExtension(this.allowedExtensionsSet, filename))) { String errMsg = getTextMessage(action, "struts.messages.error.file.extension.not.allowed", new Object[] { inputName, filename, file.getName(), contentType }, locale); if (validation != null) { validation.addFieldError(inputName, errMsg); } if (LOG.isWarnEnabled()) LOG.warn(errMsg, new String[0]); } else { fileIsAcceptable = true; } return fileIsAcceptable; }
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 四:参考的网络资源如下

1)Struts2文件上传大小限制相关

http://www.cnblogs.com/highriver/archive/2011/06/01/2065557.html

http://www.cnblogs.com/forlina/archive/2011/09/08/2171404.html

http://www.docin.com/p-633913742.html

 2)Struts2拦截器相关

http://struts2.group.iteye.com/group/wiki/1397-deep-into-struts2-interceptors

http://www.open-open.com/lib/view/open1338339244354.html

http://blog.csdn.net/qjyong/article/details/1824607

posted @ 2017-04-25 09:44  gcjava  阅读(502)  评论(0编辑  收藏  举报