文件上传struts2 实现文件上传功能(3)

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struts2

Struts Apache OS JSP XML

（三）使用struts2进行文件上传、下载
需引入两个jar包

commons-fileupload-1.2.1.jar

commons-io-1.3.2.jar

这两个jar包在struts2.1.6版本中已经自带，较低版本需到apache网站下载，网址：http://commons.apache.org/

1、单文件上传
upload3.jsp

<%@ page language="java" contentType="text/html; charset=GB18030"
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pageEncoding="GB18030"%>
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<%@ taglib prefix="s" uri="/struts-tags"%>
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<title>Insert title here</title>
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</head>
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<body>
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<s:form action="upload" method="post" theme="simple"
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enctype="multipart/form-data">
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<table align="center" width="50%" border="1">
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<tr>
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<td>
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username
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</td>
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<td>
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<s:textfield name="username"></s:textfield>
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</td>
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</tr>
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<tr>
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<td>
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password
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</td>
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<td>
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<s:password name="password"></s:password>
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</td>
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</tr>
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<tr>
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<td>
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file
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</td>
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<td>
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<s:file name="file"></s:file>
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</td>
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</tr>
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<tr>
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<td>
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<s:submit value=" submit "></s:submit>
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</td>
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<td>
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<s:reset value=" reset "></s:reset>
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</td>
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</tr>
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</table>
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</s:form>
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</body>
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</html>

web.xml中的配置

<filter-name>struts2</filter-name>

<filter-class>

org.apache.struts2.dispatcher.FilterDispatcher

</filter-class>

</filter>

<filter-mapping>

<filter-name>struts2</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

struts.xml中的配置

<?xml version="1.0" encoding="GBK" ?>
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<!DOCTYPE struts PUBLIC
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"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
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"http://struts.apache.org/dtds/struts-2.0.dtd">
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<struts>
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<constant name="struts.i18n.encoding" value="gbk"></constant>
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<constant name="struts.multipart.saveDir" value="c:\"></constant>
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<package name="struts2" extends="struts-default">
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<action name="upload" class="com.test.action.UploadAction">
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<result name="success">/upload/result3.jsp</result>
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</action>
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</package>
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</struts>

UploadAction.java

package com.test.action;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.InputStream;
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import java.io.OutputStream;
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import org.apache.struts2.ServletActionContext;
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import com.opensymphony.xwork2.ActionSupport;
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@SuppressWarnings("serial")
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public class UploadAction extends ActionSupport {
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private String username;
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private String password;
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private File file;
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private String fileFileName;
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private String fileContentType;
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public String getUsername() {
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return username;
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}
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public void setUsername(String username) {
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this.username = username;
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}
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public String getPassword() {
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return password;
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}
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public void setPassword(String password) {
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this.password = password;
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}
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public File getFile() {
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return file;
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}
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public void setFile(File file) {
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this.file = file;
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}
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public String getFileFileName() {
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return fileFileName;
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}
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public void setFileFileName(String fileFileName) {
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this.fileFileName = fileFileName;
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}
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public String getFileContentType() {
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return fileContentType;
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}
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public void setFileContentType(String fileContentType) {
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this.fileContentType = fileContentType;
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}
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@SuppressWarnings("deprecation")
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@Override
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public String execute() throws Exception {
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InputStream is = new FileInputStream(file);
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String root = ServletActionContext.getRequest().getRealPath("/upload");
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File destFile = new File(root, this.getFileFileName());
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OutputStream os = new FileOutputStream(destFile);
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byte[] buffer = new byte[400];
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int length = 0;
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while ((length = is.read(buffer)) > 0) {
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os.write(buffer, 0, length);
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}
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is.close();
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os.close();
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return SUCCESS;
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}
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}

结果：

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文件上传struts2 实现文件上传功能(4) | 文件上传struts2 实现文件上传功能(2)

2009-08-22 15:32
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