Struts2文件上传，加进度条这个功能我是实现了，但是为何我取不到Struts2的返回值，兄弟们帮我看下_html/css

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Struts2文件上传，加进度条这个功能我是实现了，但是为何我取不到Struts2的返回值，兄弟们帮我看下_html/css_WEB-ITnose

Jun 24, 2016 am 11:58 AM

struts2 업로드 진행률 표시줄

这个是还未上传时的界面：

这个是上传完成时的界面：

就是不知道为什么取不到界面

这个是jsp的代码

String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

nbsp;HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

上传进度条的action
public class FileProgressAction extends ActionSupport {
private State state;

public State getState() {
return state;
}

public void setState(State state) {
this.state = state;
}
@Override
public String execute() throws Exception {
HttpSession session = ServletActionContext.getRequest().getSession();
this.state = (State) session.getAttribute("state");
if(state==null){
System.out.println("action is null");
state = new State();
state.setCurrentItem(0);
}else{
Double a=Double.parseDouble(state.getReadedBytes()+"");
Double b=Double.parseDouble(state.getTotalBytes()+"");
double result=a/b*100;
state.setRate((int)result);
}
return SUCCESS;
}
}
上传完成的action  返回值就在这里
public class FileProgressUploadAction extends ActionSupport{
    private File file;
    private String fileFileName;
    private String fileContentType;
    private String flag="===============";

public String getFlag() {
return flag;
}

public void setFlag(String flag) {
this.flag = flag;
}

public File getFile() {
return file;
}

public void setFile(File file) {
this.file = file;
}


public String getFileFileName() {
return fileFileName;
}

public void setFileFileName(String fileFileName) {
this.fileFileName = fileFileName;
}

public String getFileContentType() {
return fileContentType;
}

public void setFileContentType(String fileContentType) {
this.fileContentType = fileContentType;
}

@Override
public String execute(){

   try {
   System.out.println("file:"+file);
   InputStream is=new FileInputStream(file);
   String root=ServletActionContext.getRequest().getRealPath("/upload");
   System.out.println("root:"+root);

   System.out.println("name:"+this.fileFileName);
   System.out.println("type:"+this.fileContentType);
   File destFile=new File(root,this.fileFileName);

   OutputStream os=new FileOutputStream(destFile);

   byte [] b=new byte[1024*1024*10];
   int length=0;
   while(true){
     length=is.read(b);
     if(length      break;
     os.write(b,0,length);
   }
   setFlag("SUCCESS");
   is.close();
   os.close();
   }catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
   }
   System.out.println("=====================");
  return SUCCESS;
   }
}

帖子比较长希望好心人帮我看看吧，想了好久没找出什么原因