struts2实现文件上传

来源：互联网发布：中国与大数据编辑：程序博客网时间：2024/06/05 10:08

一、web.xml

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:web="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd http://xmlns.jcp.org/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.4"><welcome-file-list>  <welcome-file>login.jsp</welcome-file></welcome-file-list><filter><filter-name>struts2</filter-name><filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class></filter><filter-mapping><filter-name>struts2</filter-name><url-pattern>/*</url-pattern></filter-mapping></web-app>

二、 upload.jsp

<%@ page language="java" contentType="text/html;charset=UTF-8"    pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"><title>文件上传</title></head><body>   <center>     <h1>struts2文件上传</h1>     <form action="upload.action" method="post" enctype="multipart/form-data">        <table>          <tr>            <td>用户名：</td>            <td><input type="text" name="username"/></td>          </tr>          <tr>            <td>上传文件：</td>            <td><input type="file" name="myUpload"/></td>          </tr>        <tr>          <td><input type="submit" value="上传"/></td>          <td><input type="reset" value="重置"/></td>        </tr>        </table>     </form>     </center></body></html>

三、FileAction

package com.action;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.util.UUID;import org.apache.struts2.ServletActionContext;import com.opensymphony.xwork2.ActionSupport;public class FileAction extends ActionSupport{    private  String username;    private File myUpload;    private String myUploadFileName;    private String myUploadContentType;    private String savePath;    //接受struts.xml文件配置值的方法    public void setSavePath(String value){    this.savePath=value;    }    public String getSavePath() throws Exception{    String str=ServletActionContext.getServletContext().getRealPath(savePath);    return str;    }public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public File getMyUpload() {return myUpload;}public void setMyUpload(File myUpload) {this.myUpload = myUpload;}public String getMyUploadFileName() {return myUploadFileName;}public void setMyUploadFileName(String myUploadFileName) {this.myUploadFileName = myUploadFileName;}public String getMyUploadContentType() {return myUploadContentType;}public void setMyUploadContentType(String myUploadContentType) {this.myUploadContentType = myUploadContentType;}    public String upload() throws Exception{     String strNewFileName=UUID.randomUUID().toString();         String suffix=myUploadFileName.substring(myUploadFileName.lastIndexOf("."));         strNewFileName+=suffix;         FileOutputStream fos=new FileOutputStream(getSavePath()+"\\"+strNewFileName);         myUploadFileName=strNewFileName;         FileInputStream fis=new FileInputStream(getMyUpload());         byte[] buffer=new byte[1024];         int len=0;         while((len=fis.read(buffer))>0){         fos.write(buffer,0,len);         }    fos.close();    return SUCCESS;    }}

四、struts.xml

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN" "http://struts.apache.org/dtds/struts-2.5.dtd" ><struts>   <package name="myPackage" namespace="/" extends="struts-default">   <action name="login" class="com.action.UserAction" method="execute">            <result>loginSuccess.jsp</result>            <result name="input">login.jsp</result>        </action>        <action name="upload" class="com.action.FileAction" method="upload">        <param name="savePath">/uploadFiles</param><!--配置文件中出现的保存文件的路径为uploadFiles，故应该在根目录下建立这样的一个文件夹 -->        <result name="success">/uploadSucc.jsp</result>       </action>    </package></struts>

五、uploadSucc.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%>    <%@ taglib prefix="s" uri="/struts-tags"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>上传成功</title></head><body>      上传成功!<br/>   用户名：<s:property value="username"/><br/><!--通过struts标签来布局，提高开发效率 -->   文件为：<img src="<s:property value="'uploadFiles/'+myUploadFileName"/>"><br/></body></html>

阅读全文

0 0