struts2接收参数的方法
2016-01-28 21:17
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struts2接收参数的方法总共有三种
(1)通过属性接受参数（推荐使用）
(2)使用Domain Model来接受参数（推荐使用）
(3)使用ModelDriven来接受参数（并不常用）
struts.xml
使用属性来接收参数：
index.jsp
index.jsp
UserAction.java
User.java
index.jsp
(1)通过属性接受参数（推荐使用）
(2)使用Domain Model来接受参数（推荐使用）
(3)使用ModelDriven来接受参数（并不常用）
struts.xml
<span style="font-size:18px;"><?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> <constant name="struts.devMode" value="true" /> <constant name="struts.enable.DynamicMethodInvocation" value="true" /> <package name="user" namespace="/user" extends="struts-default"> <action name="user" class="com.dqpi.eonline.UserAction"> <result> /User_add_success.jsp </result> </action> </package> </struts> </span>User_add_success.jsp
<span style="font-size:18px;"><%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>user_add_success.jsp</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> user add success <br> </body> </html> </span>
使用属性来接收参数：
index.jsp
<span style="font-size:18px;"><%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <%@taglib uri="/struts-tags" prefix="s" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <!--此处使用了myeclipse中经常使用的basepath --> <base href="<%=basePath%>"> <title>My JSP 'index.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <span style="color:#ff0000;">通过使用属性来接受参数<a href="user/user!add?name=a&age=10">添加用户</a></span> </body> </html> </span>UserAction.java
<span style="font-size:18px;">package com.dqpi.eonline;
import com.opensymphony.xwork2.ActionSupport;
/**
* 通过使用属性来接受参数
*
* @author Administrator
*
*/
public class UserAction extends ActionSupport {
private static final long serialVersionUID = 1L;
/**
* 定义属性name和age
*/
<span style="color:#ff0000;">private String name;
private int age;</span>
/**
* add方法，在控制台打印接受的参数的内容
* @return
*/
<span style="background-color: rgb(255, 255, 0);">public String add(){</span>
<span style="color:#ff0000;">System.out.println("name =" + name);
System.out.println("age =" + age);
return SUCCESS;</span>
}
/**
*
* 生成getter和setter方法
*/
<span style="background-color: rgb(255, 255, 0);">public String getName() {</span>
return name;
}
<span style="background-color: rgb(255, 255, 0);">public void setName(String name) {</span>
this.name = name;
}
<span style="background-color: rgb(255, 255, 0);">public int getAge() {</span>
return age;
}
<span style="background-color: rgb(255, 255, 0);">public void setAge(int age) {</span>
this.age = age;
}
}
</span>使用domain model来接收参数index.jsp
<span style="font-size:18px;"><%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <%@taglib uri="/struts-tags" prefix="s" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <!--此处使用了myeclipse中经常使用的basepath --> <base href="<%=basePath%>"> <title>My JSP 'index.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <span style="color:#ff0000;">通过使用Domain Model来接受参数<a href="user/user!add?user.name=a&user.age=10">添加用户</a></span> </body> </html> </span>UserAction.java
<span style="font-size:18px;">package com.dqpi.eonline;
import com.dqpi.eonline.model.User;
import com.opensymphony.xwork2.ActionSupport;
/**
* 通过使用Domain Model来接受参数
*
* @author Administrator
*
*/
public class UserAction<span style="color:#ff0000;"> extends ActionSuppor</span>t {
private static final long serialVersionUID = 1L;
/**
* 定义域模型對象
*/
<span style="color:#ff0000;">private User user;</span>
/**
* add方法，在控制台打印接受的参数的内容
* @return
*/
<span style="background-color: rgb(255, 255, 0);">public String add(){</span>
<span style="color:#ff0000;">System.out.println("name =" + user.getName());
System.out.println("age =" + user.getAge());
return SUCCESS;</span>
}
/**
*
* 生成getter和setter方法
*/
<span style="background-color: rgb(255, 255, 0);">public User getUser() {</span>
return user;
}
<span style="background-color: rgb(255, 255, 0);">public void setUser(User user) {</span>
this.user = user;
}
}
</span>User.java<span style="font-size:18px;">package com.dqpi.eonline.model;
public class User {
<span style="color:#ff0000;">private String name;
private int age;
</span>
<span style="background-color: rgb(255, 255, 0);">public String getName()</span> {
return name;
}
<span style="background-color: rgb(255, 255, 0);">public void setName(String name) </span>{
this.name = name;
}
<span style="background-color: rgb(255, 255, 0);">public int getAge() {</span>
return age;
}
<span style="background-color: rgb(255, 255, 0);">public void setAge(int age) {</span>
this.age = age;
}
}
</span>使用model driven来接收参数UserAction.java
<span style="font-size:18px;">package com.dqpi.eonline;
import com.dqpi.eonline.model.User;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
/**
* 通过使用Domain Model来接受参数
*
* @author Administrator
*
*/
public class UserAction extends ActionSupport<span style="color:#ff0000;"> implements ModelDriven<User></span>{
private static final long serialVersionUID = 1L;
/**
* 定义域模型對象
*/
<span style="color:#ff0000;">private User user = new User();</span>
/**
* add方法，在控制台打印接受的参数的内容
* @return
*/
public String add(){
<span style="color:#ff0000;">System.out.println("name =" + user.getName());
System.out.println("age =" + user.getAge());</span>
return SUCCESS;
}
@Override
<span style="background-color: rgb(255, 255, 0);">public User getModel() {</span>
// TODO Auto-generated method stub
<span style="color:#ff0000;">return user;</span>
}
}
</span>User.java
<span style="font-size:18px;">package com.dqpi.eonline.model;
public class User {
<span style="color:#ff0000;">private String name;
private int age;
</span>
<span style="background-color: rgb(255, 255, 0);">public String getName()</span> {
return name;
}
<span style="background-color: rgb(255, 255, 0);">public void setName(String name) </span>{
this.name = name;
}
<span style="background-color: rgb(255, 255, 0);">public int getAge() {</span>
return age;
}
<span style="background-color: rgb(255, 255, 0);">public void setAge(int age) {</span>
this.age = age;
}
}</span>index.jsp
<span style="font-size:18px;"><%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <%@taglib uri="/struts-tags" prefix="s" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <!--此处使用了myeclipse中经常使用的basepath --> <base href="<%=basePath%>"> <title>My JSP 'index.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <span style="color:#ff0000;">通过使用Model Driven来接受参数<a href="user/user!add?name=a&age=10">添加用户</a></span> </body> </html> </span>
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