标签：png mod vat 不能 值栈 后台 port 传值 def
环境搭建
1.1 jar
1.2 web.xml
1.3 struts.xml
struts.xml(核心配置文件)
添加依赖：（在pom.xml中）
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-core</artifactId>
<version>2.5.13</version>
</dependency>
开发
Action
不需要指定父类(ActionSupport)
业务方法的定义
public String xxx();//execute
Action是多例模式(注：在spring中的配置中一定要注意)
Action用来接收参数
参数赋值
Action中定义属性，并提供get/set方法
userName, getUserName/setUserName
Defultaction.java
package com.web;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts2.ServletActionContext;
import org.apache.struts2.interceptor.ServletRequestAware;
import org.apache.struts2.interceptor.ServletResponseAware;
import com.opensymphony.xwork2.ModelDriven;
/**
* 1、动态方法调用
* 2、struts中的传参
* 2.1 set传参
* 2.2 参数名.属性名传参
* 2.3实现modeldriven接口
* 3、struts与tomcat的交互
* 将后台的值传到前台去
* request传值
*
* 值栈传值(get方法传值)
* @author xyls
*
*/
public class DefultAction implements ModelDriven<User>, ServletRequestAware,ServletResponseAware{
private HttpServletRequest request;
private HttpServletResponse response;
private User user1=new User();
private User user2;
private String sex;
private String uname;
public User getUser2() {
return user2;
}
public void setUser2(User user2) {
this.user2 = user2;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String add() {
System.out.println("。。。");
return null;
}
public String del() {
System.out.println("user1:"+user1);
System.out.println("user2:"+user2);
System.out.println("sex:"+sex);
HttpServletRequest request=ServletActionContext.getRequest();
this.request.setAttribute("rs", user1);
return "success";
}
public String edit() {
System.out.println("。。。");
return null;
}
public String list() {
System.out.println("。。。");
return null;
}
@Override
public User getModel() {
return user1;
}
@Override
public void setServletResponse(HttpServletResponse response) {
this.response=response;
}
@Override
public void setServletRequest(HttpServletRequest request) {
this.request=request;
}
}
ModelDriven
返回实体，不能为null，不需要提供get/set方法
ModelDriven返回实体和Action中属性重名，ModelDriven中优先级更高
与J2EE容器交互
非注入
耦合
ServletActionContext
解耦(建立使用解耦模式)
ActionContext
运行结果（控制台）：
demo.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>
<h2>struts传参的3种方式</h2>
<a href="${pageContext.request.contextPath}/sy/defult_del.action?uid=001&&uname=zs">测试model driver</a>
<a href="${pageContext.request.contextPath}/sy/defult_del.action?sex=nan">测试set传参</a>
<a href="${pageContext.request.contextPath}/sy/defult_del.action?user2.uid=002&&user2.uname=ls">测试参数名.属性名传参</a>
</body>
</html>
标签：png mod vat 不能 值栈 后台 port 传值 def
原文地址：https://www.cnblogs.com/omji0030/p/11247395.html
