Question

我使用ServletFileUpload上传图片如下面的html：

<body>
        <form   id="formId" >
<input type="file">
<input type="submit" id="btn" value="submit">
</form>
    <script>
      $(document).ready(function(){ 

          $("#btn").ready(function(){ 
             data1= new FormData($("#formId")[0]);

                $.ajax( {
                  url: 'Sample1',
                  type: 'POST',
                  data :data1,
                  processData: false,
                  contentType: false,
                  dataType:"text",
                success:function(response)
                {  


            }
            } );

      } );
  });
</script>
</body>

我的servlet代码

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
    {
        System.out.println("entered in to servlet");

        ServletFileUpload sf=new ServletFileUpload(new DiskFileItemFactory());
        try {
            List<FileItem> multifiles=sf.parseRequest(request);
            for(FileItem item:multifiles){
            item.write(new File("D:\\Projects\\i_seva\\WebContent\\"+item.getName()));
        String   ss= item.getName();

            }  
        } catch (Exception  e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } 
    }

当我点击提交按钮时，请求servlet并打印消息entered in to servlet，但文件未上传。我无法追踪它是否是html或servlet的错误请帮助我。

通过添加name="file" <input type="file" name="file">

解决了我的问题

但新的异常发生如下

java.io.FileNotFoundException: D:\Projects\i_seva\WebContent (Access is denied)
at java.io.FileOutputStream.open0(Native Method)
at java.io.FileOutputStream.open(Unknown Source)
at java.io.FileOutputStream.<init>(Unknown Source)
at java.io.FileOutputStream.<init>(Unknown Source)
at org.apache.commons.fileupload.disk.DiskFileItem.write(DiskFileItem.java:394)
at com.iseva.Servlet.Sample1.doPost(Sample1.java:36)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1104)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1519)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1475)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)

Answer 1

在堆栈溢出jQuery Ajax File Upload中发现了类似的问题，希望这对您有帮助。

使用Servlet FileUpload上传图像不起作用和java.io.FileNotFoundException：file（访问被拒绝）？

1 个答案: