Struts2学习八----------接收参数

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接收参数

　　- 使用Action的属性接收参数

　　- 使用Domain Model接收参数

　　- 使用ModelDriven接收参数

实例

1.项目结构

2.pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  	
  	<modelVersion>4.0.0</modelVersion>
  	
	<groupId>org.struts</groupId>
	<artifactId>Struts2-Parameter</artifactId>
	<packaging>war</packaging>
	<version>0.0.1-SNAPSHOT</version>
	<name>Struts2-Parameter Maven Webapp</name>
	<url>http://maven.apache.org</url>
	
	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<struts.version>2.5.10</struts.version>
	</properties>
	
	<dependencies>
		<!-- junit -->
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.12</version>
			<scope>test</scope>
		</dependency>
		<!-- Struts2 -->
		<dependency>
		    <groupId>org.apache.struts</groupId>
		    <artifactId>struts2-core</artifactId>
		    <version>${struts.version}</version>
		</dependency>
	</dependencies>
	
	<build>
		<plugins>
			<plugin>
			    <groupId>org.apache.maven.plugins</groupId>
			    <artifactId>maven-compiler-plugin</artifactId>
			    <version>3.6.1</version>
			    <configuration>
					<source>1.7</source>
			    	<target>1.7</target>			    
			    </configuration>
			</plugin>
		</plugins>
	  	<finalName>Struts2-Parameter</finalName>
	</build>
</project>

3.web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
                      http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
  version="3.0" metadata-complete="true">
  
	<welcome-file-list>
		<welcome-file>login.jsp</welcome-file>
	</welcome-file-list>
  
	<!-- struts2接入 -->
	<filter>
		<filter-name>struts2</filter-name>
		<filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>struts2</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
  
</web-app>

4.User.java

package org.struts.model;

public class User {

	private String username;
	private String password;
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	
}

5.LoginAction.java

　　5.1 方式一：使用Action的属性接收参数

package org.struts.action;

import com.opensymphony.xwork2.ActionSupport;

public class LoginAction extends ActionSupport {

	private static final long serialVersionUID = 1L;
	
	private String username;
	private String password;

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}

	public String login() {
		
		System.out.println("username = " + username);
		System.out.println("password = " + password);
		return SUCCESS;
		
	}

}

　　5.2 方式二：使用Domain Model接收参数

package org.struts.action;

import org.struts.model.User;

import com.opensymphony.xwork2.ActionSupport;

public class LoginAction extends ActionSupport {

	private static final long serialVersionUID = 1L;
	
	private User user;

	public User getUser() {
		return user;
	}

	public void setUser(User user) {
		this.user = user;
	}
	

	public String login() {
		
		System.out.println("username = " + user.getUsername());
		System.out.println("password = " + user.getPassword());
		return SUCCESS;
		
	}

}

　　5.3 方式三：使用ModelDriven接收参数

package org.struts.action;

import org.struts.model.User;

import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

public class LoginAction extends ActionSupport implements ModelDriven<User> {

	private static final long serialVersionUID = 1L;

	private User user = new User();
	
	public User getModel() {
		return user;
	}

	public String login() {
		
		System.out.println("username = " + user.getUsername());
		System.out.println("password = " + user.getPassword());
		return SUCCESS;
		
	}

}

6.struts.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
    "http://struts.apache.org/dtds/struts-2.5.dtd">
<struts>

	<package name="login" extends="struts-default" namespace="/">
		<action name="login" class="org.struts.action.LoginAction" method="login">
			<result>/success.jsp</result>
		</action>
	</package>
	
</struts>

7.login.jsp

　　7.1 方式一和方式三

<%@ 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>用户登录</title>
</head>
<body>
	<form action="login" method="post">
		用户名：<input type="text" name="username"/><br/>
		密码：<input type="password" name="password"/><br/>
		<input type="submit" value="登录">
		<input type="reset" value="重置">
	</form>
</body>
</html>

　　7.2 方式二

<%@ 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>用户登录</title>
</head>
<body>
	<form action="login" method="post">
		用户名：<input type="text" name="user.username"/><br/>
		密码：<input type="password" name="user.password"/><br/>
		<input type="submit" value="登录">
		<input type="reset" value="重置">
	</form>
</body>
</html>

8.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>登录成功界面</title>
</head>
<body>
	登录成功
</body>
</html>

9.效果预览