简易版 文件上传UpdateFile(Struts2版)
1.搭建环境
eclipase：Luna Release (4.4.0)
struts2 ：2.3.28 下载地址：http://download.csdn.net/detail/chuck_kui/9513090
2. 项目结构：
3. 类：
Update.java
package com.baidu.update;
import java.io.File;
public class Update {
private File doc;
private String docContentType ;
private String docFileName;
private String desc;
public File getDoc() {
return doc;
}
public void setDoc(File doc) {
this.doc = doc;
}
public String getDocContentType() {
return docContentType;
}
public void setDocContentType(String docContentType) {
this.docContentType = docContentType;
}
public String getDocFileName() {
return docFileName;
}
public void setDocFileName(String docFileName) {
this.docFileName = docFileName;
}
public String getDesc() {
return desc;
}
public void setDesc(String desc) {
this.desc = desc;
}
}
Action： TestUpdateAction.java
package com.baidu.update;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import javax.servlet.ServletContext;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
import com.opensymphony.xwork2.Preparable;
public class TestUpdateAction extends ActionSupport implements ModelDriven<Update>,Preparable {
private static final long serialVersionUID = 1L;
@Override
public String execute() throws Exception {
System.out.println(update.getDoc());
System.out.println(update.getDocContentType());
System.out.println(update.getDocFileName());
System.out.println(update.getDesc());
System.out.println("update: " + update.hashCode());
System.out.println("栈顶对象: " + ActionContext.getContext().getValueStack().peek().hashCode());
//1. 获得当前web应用所在目录下file文件夹的绝对路径
ServletContext servletContext = ServletActionContext.getServletContext();
String dir = servletContext.getRealPath("/files/" +update.getDocFileName());
System.out.println(dir);
//2.获取输入和输出流
FileInputStream in = new FileInputStream(update.getDoc());
FileOutputStream out = new FileOutputStream(dir);
//3.输出文件信息
byte[] buffe = new byte[1024];
int len = 0;
while((len = in.read(buffe)) != -1){
out.write(buffe, 0, len);
}
out.close();
in.close();
return super.execute();
}
private Update update;
@Override
public Update getModel() {
update = new Update();
return update;
}
@Override
public void prepare() throws Exception {
}
}
配置：
struts.xml
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> <!-- 配置全局的国际化资源文件 --> <constant name="struts.custom.i18n.resources" value="nihao"></constant> <package name="default" namespace="/" extends="struts-default"> <action name="update" class="com.baidu.update.TestUpdateAction"> <result>/success.jsp</result> <result name="input">/upload.jsp</result> </action> </package> </struts>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/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<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>
页面：JSP
upload.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>Insert title here</title>
</head>
<body>
<s:form action="update" method="post" enctype="multipart/form-data">
<s:file name="doc" label="DocFile"></s:file>
<s:textfield name="desc" label="Desc"></s:textfield>
<s:submit></s:submit>
</s:form>
</body>
</html>
success.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>Insert title here</title>
</head>
<body>
<h4>有为青年</h4>
</body>
</html>
效果：
