个人总结：Struts2 上传文件的六种方法

Struts2 上传实例六种方法（去除了jar包，配置时必须导入包：

commons-fileupload-1.2.1.jar；commons-io-1.3.2.jar；commons-logging-1.0.4.jar；

freemarker-2.3.13.jar；ognl-2.6.11.jar；struts2-core-2.1.6.jar；xwork-2.1.2.jar

 

补充：

Struts2Upload(全含jar包，将数据保存到数据库)

 

压缩包部分代码如下（方法一、方法三）：

public String execute() throws Exception {
  InputStream is=new FileInputStream(filer);
  String root=ServletActionContext.getRequest().getRealPath("/upload");
  File destFile=new File(root,this.getFileFileName());
  OutputStream os=new FileOutputStream(destFile);
  byte[] buffer=new byte[400];
  byte t;
  int length=0;
  while((length=is.read(buffer))>0)
  {
   os.write(buffer,0,length);
  }
  /*UploadService us=new UploadService();
  int flag=us.insertUpload(filmName, filmContent,filer);*/
  is.close();
  os.close();
  return SUCCESS;
 }

 

 private static void copy(File src, File dst) {   
	        InputStream in = null;   
	        OutputStream out = null;   
	        try {   
	            in = new BufferedInputStream(new FileInputStream(src), BUFFER_SIZE);   
	            out = new BufferedOutputStream(new FileOutputStream(dst),   
	                    BUFFER_SIZE);   
	            byte[] buffer = new byte[BUFFER_SIZE];   
	            int len = 0;   
	            while ((len = in.read(buffer)) > 0) {   
	                out.write(buffer, 0, len);   
	            }   
	        } catch (Exception e) {   
	            e.printStackTrace();   
	        } finally {   
	            if (null != in) {   
	                try {   
	                    in.close();   
	                } catch (IOException e) {   
	                    e.printStackTrace();   
	                }   
	            }   
	            if (null != out) {   
	                try {   
	                    out.close();   
	                } catch (IOException e) {   
	                    e.printStackTrace();   
	                }   
	            }   
	        }   
	    }   
	    @Override  
	    public String execute() throws Exception {   
	        //根据服务器的文件保存地址和原文件名创建目录文件全路径   
	        String dstPath = ServletActionContext.getServletContext()   
	                                .getRealPath("/upload")   
	                                + "\\" + uploadFileName;   
	          
	        System.out.println("上传的文件的类型："+ this.getUploadContentType());   
	          
	        File dstFile = new File(dstPath);   
	        copy(this.upload, dstFile);   
	        return SUCCESS;   
	    }

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