java Struts2框架下实现文件上传功能

本文实例为大家分享了Struts2框架实现文件上传的方法,供大家参考,具体内容如下

struts2的配置过程

(1)在项目中加入jar包

 java Struts2框架下实现文件上传功能_第1张图片

 

(2)web.xml中filter(过滤器)的配置



 
  
  struts2
  org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
 
 
  struts2
  /*
 

 

(3)struts.xml配置文件的编写





struts2
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter


struts2
/*


(4)action类的编写

package com.xmgc.sc.action;
 
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
 
 
import org.apache.struts2.ServletActionContext;
 
public class MyUpLoadAction {
 
  private String title;
  private File upload;//与form表单中的file文件类型的名字是一样的
  private String uploadContentType;//前缀必须要是上面的upload
  private String uploadFileName;
   
 
  public String getTitle() {
    return title;
  }
 
  public void setTitle(String title) {
    this.title = title;
  }
 
  public File getUpload() {
    return upload;
  }
 
  public void setUpload(File upload) {
    this.upload = upload;
  }
 
  public String getUploadContentType() {
    return uploadContentType;
  }
 
  public void setUploadContentType(String uploadContentType) {
    this.uploadContentType = uploadContentType;
  }
 
  public String getUploadFileName() {
    return uploadFileName;
  }
 
  public void setUploadFileName(String uploadFileName) {
    this.uploadFileName = uploadFileName;
  }
 
/* public String getSavePath() {
    //ServletContext cxt=ServletActionContext.getServletContext();
    //String path=cxt.getRealPath("/");
    //这个获取的path为:http://localhost:8080/sc   
    //上传以后变为E:\software\apache-tomcat-6.0.45\webapps\sc
     
     
    return savePath;
     
  }
 
  public void setSavePath(String savePath) {
    //E:\software\apache-tomcat-6.0.45\webapps\sc/myupload
    this.savePath = ServletActionContext.getServletContext().getRealPath("/myupload");
  }*/
   
   
  public String execute() throws IOException{
     
    System.out.println(title);//标题
    System.out.println(uploadContentType);//准备上传的文件的文件类型
    System.out.println(uploadFileName);//准备上传的文件的文件名,记住还有扩展名
    System.out.println(upload);
     
    String realPath=ServletActionContext.getServletContext().getRealPath("/");
     
    String path=realPath+"myupload/"+uploadFileName;
     
    System.out.println(realPath);
    System.out.println(path);
     
    FileInputStream fis=new FileInputStream(upload);
    FileOutputStream fos=new FileOutputStream(path);
     
    byte[] bytes=new byte[1024];//定义一个1024大小的字节数组
    int len=-1;//用来做标志位
     
     
    while((len=fis.read(bytes))>0){
      fos.write(bytes, 0, len);
    }
     
    return null;
  }
}

 (5)JSP页面的编写

<%@ page contentType="text/html;charset=utf-8"%>
 

文件名:
上传:
  

经过这次总结,感觉struts2框架下的单文件的上传还是非常简单的,只要获取要存储在什么地方的地址,再通过输入输出流,写到这个地址中去就行了。绝大部分工作,struts2已经帮我们做好了。

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。

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