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Struts2.3.8_Chapter02_Part02

第二个Struts2.3.8应用 - 系统登录
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1. 需求

 

 

 

 

 

 

 

2. JSP

   chapter02/part02/login.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>Chapter02 | Part02</title>
    </head>
    <body>
        <form id="loginForm" action="login.action" method="post">
    	<table>
    		<tr>
    			<td>Username:</td>
    			<td><input type="text" name="username"></td>
    		</tr>
    		<tr>
    			<td>Password:</td>
    			<td><input type="password" name="password"></td>
    		</tr>
    		<tr>
    			<td>&nbsp;</td>
    			<td><input type="submit" value="Login"></td>
    		</tr>
    	</table>
        </form>
    </body>
</html>

 

   chapter02/part02/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>Chapter02 | Part02</title>
    </head>
    <body>
    	<h3>SUCCESS!</h3>
        <hr>
        <table>
    		<tr>
    			<td>Username:</td>
    			<td>${requestScope.username}</td>
    		</tr>
    		<tr>
    			<td>Password:</td>
    			<td>${requestScope.password}</td>
    		</tr>
    	</table>
    </body>
</html>
 
   chapter02/part02/error.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>Chapter02 | Part02</title>
    </head>
    <body>
        <h3>ERROR!</h3>
        <hr>
        ${requestScope.message}
    </body>
</html>
 

3. Action

package chapter02.part02.action;

import com.opensymphony.xwork2.Action;

public class LoginAction implements Action {
	private String username;
	private String password;
	private String message;

	@Override
	public String execute() throws Exception {
		if (null == username || "".equals(username)) {
			message = "Username is required ...";
			return ERROR;
		}

		if (null == password || "".equals(password)) {
			message = "Password is required ...";
			return ERROR;
		}

		return SUCCESS;
	}

	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 getMessage() {
		return message;
	}

	public void setMessage(String message) {
		this.message = message;
	}
}

 

 

4. 注册Action

   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>
    <include file="config/chapter02.xml"/>
</struts>
 
   config/chapter02.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>
	<package name="chapter02.part02" namespace="/chapter02/part02" extends="struts-default">
    	<action name="login" class="chapter02.part02.action.LoginAction">
    		<result name="success">success.jsp</result> <!-- 默认值为 success -->
    		<result name="error">error.jsp</result>
    	</action>
    </package>
</struts>
 

5. 项目结构

 

 

6. 发布运行

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