struts2的多个文件上传

成功效果图：

上篇文章描述了单个文件的上传和配置，下面主要讲解下不同的地方：

index.jsp

 <head>  
    <script type="text/javascript">
        function check(){
            var file = document.getElementsByName("file");    
            var filename = document.getElementsByName("fileName");
            var filetype = document.getElementsByName("fileType");
            for(var i =0;i<file.length;i++){
                if(file[i].value !=""){
                      var f = file[i].value ;     
                      var type = f.substr(f.lastIndexOf(".")).toLowerCase();
                    var name = f.substr(f.lastIndexOf("\"));
                    filename[i].value = name;
                    filetype[i].value = type;                        
                  }else{
                      alert("请选择文件");
                    return false;    
                  }        
            }
            return true;
        }
    </script>
  </head>
  
  <body>    
    <p>stuts 2 多文件上传实例 </p>
    ${requestScope.typeError}    
      <form action="/uploadMore.do" method="post" enctype="multipart/form-data" onsubmit="return check();">
       上传文件1：<input type="file" name="file" /><br>
                <input type="hidden" name="fileType"/><br>
                <input type="hidden" name="fileName"/><br>
     上传文件2：<input type="file" name="file" /><br>
            <input type="hidden" name="fileType"/><br>    
            <input type="hidden" name="fileName"/><br>
           <input type="submit" value="提交"/>
      </form>    
  </body>

struts.xml

 <package name="uploadMoreFile" extends="struts-default">    
      <!--多文件上传  -->    
         <action name="uploadMore" class="com.nn.upload.UploadMoreAction" method="uploadMore">     
             <interceptor-ref name="fileUpload">
                <param name="allowedTypes">image/bmp,image/png,image/gif,image/jpeg,image/pjpeg</param>
            </interceptor-ref>
            <interceptor-ref name="defaultStack"/>           
               <param name="savePath">/upload</param> <!-- 保存的真实路径 -->
               <result name="success">/successMore.jsp</result>
               <result name="input">/index.jsp</result>                              
         </action>
     </package>

UploadMoreAction.java

public class UploadMoreAction extends ActionSupport {
    private File[] file;
    private String[]  fileName;
    private String[] fileType;
 
    public String  uploadMore(){
        String realpath = ServletActionContext.getServletContext().getRealPath("/upload");        
        if (this.file.length > 0) {
            String[] name = this.getFileName();
            for(int i =0;i<file.length;i++){
                SimpleDateFormat  df = new SimpleDateFormat("yyyyMMddHHmmss");          
                name[i] = df.format(new Date())+name[i].substring(1); //获取文件名称，去掉，并添加时间
                File savefile = new File(new File(realpath), name[i]);
                if (!savefile.getParentFile().exists())
                    savefile.getParentFile().mkdirs();
                try {
                    FileUtils.copyFile(file[i], savefile);
                } catch (IOException e) {
                    e.printStackTrace();
                }
                ActionContext.getContext().put("message", "文件上传成功！");
            }
            //this.setFileName(name); 
        }
        return "success";
     }   
}

successMore.jsp

  <body>
      ${requestScope.message}<br>
    <s:iterator value="fileName" status="stuts"> 
         文件名称：  <s:property value="fileName[#stuts.index]"/><br>     
         文件为：   <img src="${pageContext.request.contextPath}/<s:property value="'upload/'+fileName[#stuts.index]"/>"><br>
    </s:iterator>
    <s:debug></s:debug>
  </body>