SpringMVC文件上传的配置

记述一下步骤以备查。

准备工作：

需要把Jakarta Commons FileUpload及Jakarta Commons io的包放lib里。

我这边的包是：

commons-fileupload-1.1.1.jar

commons-io-1.3.2.jar

然后在spring-servlet.xml进行multipartResolver配置，不配置好上传会不好用。

    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
          <property name="maxUploadSize"><value>100000</value></property>
          <property name="defaultEncoding"><value>UTF-8</value></property>
    </bean> 

接下来就是页面了：

注意Form的写法和文件上传组件的写法。

    <form action="uploadPosdetailFile.html" method="post" ENCTYPE="multipart/form-data">
    <div class="form" >
            <p>
                <span class="req"><input id="startDateTxt"  name="startDateTxt" class="field size4" title="Enter the date" /></span>
                <label>Start Date: <span>(Date format:MM/dd/yyyy,eg:01/01/2014)</span></label>
            </p>

            <p>
                <span class="req"><input id="endDateTxt"  name="endDateTxt" class="field size4" title="Enter the date" /></span>
                <label>End Date: <span>(Date format:MM/dd/yyyy,eg:12/25/2014)</span></label>
            </p>

            <p>
                <span class="req"><input type="file"  name="uploadFileCtrl" class="field size4" title="Choose the file" /></span>
                <label>Upload file: <span>(click browse to choose)</span></label>
            </p>
    </div>

    <div class="buttons">
        <input id="queryBtn" type="Submit" class="button" value="Submit" />
    </div>

    </form>

再在控制器里写处理代码，注意参数和页面控件的对应关系：

    @RequestMapping(value="/uploadPosdetailFile")
    public String uploadPosdetailFile(@RequestParam("startDateTxt") String startDateTxt,
                                  @RequestParam("endDateTxt") String endDateTxt,
                                  @RequestParam("uploadFileCtrl") MultipartFile file,HttpServletRequest request,HttpServletResponse response){
        try {
            System.out.println("@@@@@@@@@1.startDateTxt="+startDateTxt);
            System.out.println("@@@@@@@@@2.endDateTxt="+endDateTxt);
            System.out.println("@@@@@@@@@3.file="+file.getName());

            if(file.isEmpty()==false){
                InputStream is=file.getInputStream();
                InputStreamReader isr = new InputStreamReader(is);

                 BufferedReader br=new BufferedReader(isr); 

                 String s;
                 while((s=br.readLine())!=null ){
                     System.out.println(s);
                 }

                br.close();
                isr.close();
                is.close();
            }

            return "/pages/posdetail/uploadposdetailresult/index.jsp";
        } catch (Exception e) {
            e.printStackTrace();
            logger.error(e);

            request.setAttribute("error", e.getClass());
            request.setAttribute("reason", e.getMessage());
            StackTraceElement[] arr=e.getStackTrace();
            request.setAttribute("stackTraceElements", arr);

            return "pages/error/index.jsp";
        }
    }