实现struts2进行文件上传
1.实现struts2进行单文件上传
（1）新建上传文件的jsp页面
<%@ page language=”java” import=”java.util.*” pageencoding=”utf-8”%>
<%@ page isELIgnoreed=”false”%>
<@% taglib uri=”/struts-tags” prefix=”s”%>
<!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN”>
<html>
<head>
</head>
<body>
<s:form action=”register” method=”post” entype=”multipart/form-data”>
username:<s:textfield name=”username”></s:textfield>
<br />
<s:file name=”uploadFile”></s:file>
<br />
<s:submit value=”提交”></s:submit>
</s:form>
</body>
</html>
（2）设计上传页面的控制层代码
Package controller;
import java.io.File;
import java.io.IOException;
import org.apache.commons.io.FileUtils;
import org.apache.struts2.ServletActionContext;
import org.opensymphony.xwork2.ActionSupport;
Public class Register extends ActionSupport {
private String username;
private File uploadFile;
Private String uploadFileFileName;
public void validate () {
}
/**
* getter() 和 setter() 方法
**/
public String execute() throws IOException {
System.out.println(“username的值是：”+username);
String targetDirectory = ServleActionContext.getRequest().getRealPath(“/upload”);
File target=new File(targetDirectory,uploadFileFileName);
FileUtils.copyFile(uploadFile,target);
Return “register”;
}
(3) 设置上传文件的大小(struts.properties)
struts.multipart.maxSize=2048000000
struts.multipart.saveDir=/tempUploadFile
(4) 设置配置文件
<? xml version=”1.0” encoding=”UTF-8”?>
<!DOCTYPE struts PUBLIC
“-//Apache Software Foundation//DTD Struts Configuration 2.0//EN”
“http://struts.apache.org/dtds/struts-2.2.dtd>
<struts>
<package name=”struts3.1” extends=”struts-default”>
<action name=”register” class=”controller.Register”>
<result name=”register”>/showregister.jsp</result>
<result name=”input”>/register.jsp</result>
</action>
</package>
<constant name=”struts.ui.theme” value=”simple”></constant>
</struts>
2. 实现struts2进行多文件上传
大体都一样，要注意在控制层代码中，定义的时候是 uploadFile[] 和 uploadFileFileName[] 数组。
public String execute() throws IOException {
System.out.println(“username的值是：”+username);
String targetDirectory = ServleActionContext.getRequest().getRealPath(“/upload”);
for(int i=0;i<uploadFile.length;i++){
File target=new File(targetDirectory,new SimpleDateFormat("yyyy_mm_dd_hh_mm_ss").format(new
Date()).toString()+System.nanoTime()+uploadFileFileName[i]);
FileUtils.copyFile(uploadFile[i],target);
}
Return “register”;
}
}
