Struts2的上传文件功能实现

maizi2011 · 发表于 2013-2-7 23:56:52

package com.sterning; import java.io.File; import javax.servlet.ServletContext; import org.apache.commons.io.FileUtils; import org.apache.struts2.util.ServletContextAware; import com.opensymphony.xwork2.ActionSupport; public class StrutsFileUpload extends ActionSupport implements       ServletContextAware {    private File upload;// 实际上传文件    private String uploadContentType; // 文件的内容类型    private String uploadFileName; // 上传文件名    private String fileCaption;// 上传文件时的备注    private ServletContext context;    public String execute() throws Exception {       try {                      String targetDirectory = context.getRealPath("/upload");          String targetFileName = uploadFileName;          File target = new File(targetDirectory, targetFileName);          FileUtils.copyFile(upload, target);                                  setUploadFileName(target.getPath());//保存文件的存放路径       } catch (Exception e) {          addActionError(e.getMessage());          return INPUT;       }       return SUCCESS;    }    public String getFileCaption() {       return fileCaption;    }    public void setFileCaption(String fileCaption) {       this.fileCaption = fileCaption;    }    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 void setServletContext(ServletContext context) {       this.context = context;    } }
<%@ page language="java" contentType="text/html; charset=GB2312"%> <%@ taglib prefix="s" uri="/struts-tags" %> <html>    <head>       <title>文件上传示例</title>       <link href="<s:url value="/css/main.css"/>" rel="stylesheet"          type="text/css" />    </head>    <body>       <s:actionerror />       <s:fielderror />       <s:form action="doUpload" method="POST" enctype="multipart/form-data">          <tr>                <td colspan="2">                   <h1>                      文件上传示例                   </h1>                </td>          </tr>          <s:file name="upload" label="上传的文件" />          <s:textfield name="fileCaption" label="备注" />          <s:submit value="上传"/>       </s:form>    </body> </html>
<%@ page language="java" contentType="text/html; charset=GB2312"%>  <%@ taglib prefix="s" uri="/struts-tags"%> <html>    <head>       <title>上传成功</title>       <link href="<s:url value="/css/main.css"/>" rel="stylesheet"          type="text/css" />    </head>    <body>       <table class="wwFormTable">          <tr>                <td colspan="2">                   <h1>                      上传成功                   </h1>                </td>          </tr>          <tr>                <td class="tdLabel">                   <label for="doUpload_upload" class="label">                      内容类型:                   </label>                </td>                <td>                   <s:property value="uploadContentType" />                </td>          </tr>          <tr>                <td class="tdLabel">                   <label for="doUpload_upload" class="label">                      文件路径:                   </label>                </td>                <td>                   <s:property value="uploadFileName" />                </td>          </tr>          <tr>                <td class="tdLabel">                   <label for="doUpload_upload" class="label">                      临时文件:                   </label>                </td>                <td>                   <s:property value="upload" />                </td>          </tr>          <tr>                <td class="tdLabel">                   <label for="doUpload_upload" class="label">                      备注:                   </label>                </td>                <td>                   <s:property value="fileCaption" />                </td>          </tr>       </table>    </body> </html>
<?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-2.0.dtd"> <struts>    <constant name="struts.devMode" value="true" />    <constant name="struts.i18n.encoding" value="GB2312" />    <package name="NG" namespace="/" extends="struts-default">       <action name="showUpload">          <result>/upload.jsp</result>       </action>                <action name="doUpload" class="com.sterning.StrutsFileUpload">          <result name="input">/upload.jsp</result>          <result>/upload_success.jsp</result>       </action>    </package> </struts>
<?xml version="1.0" encoding="UTF-8"?> <web-app id="WebApp_ID" version="2.4"    xmlns="http://java.sun.com/xml/ns/j2ee"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">    <display-name>customization</display-name>    <filter>       <filter-name>struts-cleanup</filter-name>       <filter-class>          org.apache.struts2.dispatcher.ActionContextCleanUp       </filter-class>    </filter>    <filter>       <filter-name>struts2</filter-name>       <filter-class>          org.apache.struts2.dispatcher.FilterDispatcher       </filter-class>    </filter>    <filter-mapping>       <filter-name>struts-cleanup</filter-name>       <url-pattern>/*</url-pattern>    </filter-mapping>    <filter-mapping>       <filter-name>struts2</filter-name>       <url-pattern>/*</url-pattern>    </filter-mapping> </web-app>

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