Intellij IDEA 构建Spring Web项目 — 用户登录功能

相关软件：
1、Intellij IDEA14：http://pan.baidu.com/s/1nu16VyD
2、JDK7：http://pan.baidu.com/s/1dEstJ5f
3、Tomcat（apache-tomcat-6.0.43）：http://pan.baidu.com/s/1kUwReQF
4、MySQL（mysql-essential-5.1.68-winx64）：http://pan.baidu.com/s/1gdZZgMB
5、Spring 3.x ： http://pan.baidu.com/s/1o7i8daM
6：相关Lib打包：http://pan.baidu.com/s/1ntUxjLJ

案例来自于《Spring 3.X 企业应用开发实战》 Chapter2 : http://pan.baidu.com/s/1qWXEE3E

1、创建一个普通的Java Web项目
Intellij IDEA创建一个普通的Java Web项目可参考：/article/6299222.html
命名为：springwebdemo_3



2、手动创建以下目录
其中test为测试目录，可以先创建一个文件夹为test，然后右键，选择Mark Directory As，再选择Test Sources Root即可。





3、导入相关的jar包
我把Spring开发要用到的jar包都弄成一个文件夹了，把里面所有的jar包复制然后黏贴到项目里面的lib目录下即可。



4、配置项目结构
打开Project Structure（Ctrl+Alt+Shift+S），选择Modules，选择Paths，选择Use module compile output path，两个都选择为刚刚创建的classes文件夹。



接着看一下Modules下的Dependencies是否已经加入lib文件夹，如果没有，点击右边的“+”号，选择“Jars or Directories ”，选择刚刚创建的lib文件夹。
如果已经加入则提个勾，表示选中。最后OK即可。



5、创建库表
我的数据库用户名为root，密码为123456。
创建库表的SQL语句可参见：\chapter2\schema。
创建数据库sampledb：



创建表t_user：



创建表t_login_log：



插入数据：



6、构建主体层
用户领域对象：User

package baobaotao.domain;
import java.io.Serializable;
import java.util.Date;
/**
* Created by gao on 16-3-17.
*/
public class User implements Serializable {
private int userId;
private String userName;
private String password;
private int credits;
private String lastIp;
private Date lastVisit;
public User() {
}
public int getUserId() {
return userId;
}
public void setUserId(int userid) {
this.userId = userid;
}
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 int getCredits() {
return credits;
}
public void setCredits(int credits) {
this.credits = credits;
}
public String getLastIp() {
return lastIp;
}
public void setLastIp(String lastIp) {
this.lastIp = lastIp;
}
public Date getLastVisit() {
return lastVisit;
}
public void setLastVisit(Date lastVisit) {
this.lastVisit = lastVisit;
}
}

登录日志领域对象：LoginLog.java

package baobaotao.domain;
import java.io.Serializable;
import java.util.Date;
/**
* Created by gao on 16-3-17.
*/
public class LoginLog implements Serializable {
private int loginLogId;
private int userId;
private String ip;
private Date loginDate;
public int getLoginLogId() {
return loginLogId;
}
public void setLoginLogId(int loginLogId) {
this.loginLogId = loginLogId;
}
public int getUserId() {
return userId;
}
public void setUserId(int userId) {
this.userId = userId;
}
public String getIp() {
return ip;
}
public void setIp(String ip) {
this.ip = ip;
}
public Date getLoginDate() {
return loginDate;
}
public void setLoginDate(Date loginDate) {
this.loginDate = loginDate;
}
public LoginLog() {
}
}

7、构建持久层

UserDao：

package baobaotao.dao;
import baobaotao.domain.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowCallbackHandler;
import org.springframework.stereotype.Repository;
import java.sql.ResultSet;
import java.sql.SQLException;
/**
* Created by gao on 16-3-17.
*/
@Repository
public class UserDao {
@Autowired
private JdbcTemplate jdbcTemplate;
public UserDao() {
//System.out.println("UserDao");
}
public int getMatchCount(String userName, String password) {
String sqlStr = "select count(*) from t_user where user_name = ? and password = ?";
return jdbcTemplate.queryForInt(sqlStr, new Object[]{userName, password});
}
public User findUserByUserName(final String userName) {
String sqlStr = " SELECT user_id,user_name,credits "
+ " FROM t_user WHERE user_name =? ";
final User user = new User();
jdbcTemplate.query(sqlStr, new Object[] { userName },
new RowCallbackHandler() {
public void processRow(ResultSet rs) throws SQLException {
user.setUserId(rs.getInt("user_id"));
user.setUserName(userName);
user.setCredits(rs.getInt("credits"));
}
});
return user;
}
public void updateLoginInfo(User user) {
String sqlStr = " UPDATE t_user SET last_visit=?,last_ip=?,credits=? "
+ " WHERE user_id =?";
jdbcTemplate.update(sqlStr, new Object[] { user.getLastVisit(),
user.getLastIp(),user.getCredits(),user.getUserId()});
}
}

LoginLogDao：

package baobaotao.dao;
import baobaotao.domain.LoginLog;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;
/**
* Created by gao on 16-3-17.
*/
@Repository
public class LoginLogDao {
@Autowired
private JdbcTemplate jdbcTemplate;
public void insertLoginLog(LoginLog loginLog) {
String sqlStr = "INSERT INTO t_login_log(user_id,ip,login_datetime) "
+ "VALUES(?,?,?)";
Object[] args = {loginLog.getUserId(), loginLog.getIp(),
loginLog.getLoginDate()};
jdbcTemplate.update(sqlStr, args);
}
}

8、业务层

package baobaotao.service;
import baobaotao.dao.LoginLogDao;
import baobaotao.dao.UserDao;
import baobaotao.domain.LoginLog;
import baobaotao.domain.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
/**
* Created by gao on 16-3-17.
*/
@Service
public class UserService {
@Autowired
private UserDao userDao;
@Autowired
private LoginLogDao loginLogDao;
public boolean hasMatchUser(String userName, String password){
int matchCount = userDao.getMatchCount(userName,password);
return matchCount > 0;
}
public User findUserByUserName(String userName) {
return userDao.findUserByUserName(userName);
}
public void loginSuccess(User user) {
user.setCredits( 5 + user.getCredits());
LoginLog loginLog = new LoginLog();
loginLog.setUserId(user.getUserId());
loginLog.setIp(user.getLastIp());
loginLog.setLoginDate(user.getLastVisit());
userDao.updateLoginInfo(user);
loginLogDao.insertLoginLog(loginLog);
}
}

9、配置applicationContext.xml文件
这里和原来的文件有些差别，因为貌似好像书本里面的源文件运行不了~so，我就改了~
在src目录下创建一个applicationContext.xml文件，点中src，右键，选择New -> File ->输入applicationContext.xml，确认即可。
输入以下内容：

<?xml version="1.0" encoding="UTF-8" ?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 扫描类包，将标注Spring注解的类自动转化Bean，同时完成Bean的注入 -->
<context:annotation-config/>
<context:component-scan base-package="baobaotao.dao"/>
<context:component-scan base-package="baobaotao.service"/>
<!-- 扫描类包，将标注Spring注解的类自动转化Bean，同时完成Bean的注入 -->
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/sampledb"/>
<property name="username" value="root"/>
<property name="password" value="123456"/>
</bean>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate"
p:dataSource-ref="dataSource"/>
<!-- 配置事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager"
p:dataSource-ref="dataSource" />
</beans>

10、编写单元测试
这里使用Junit4编写单元测试，在test文件夹下的baobaotao.service包创建类TestUserService。

package baobaotao.service;
import baobaotao.domain.User;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import java.util.Date;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* Created by gao on 16-3-17.
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"/applicationContext.xml"})
public class TestUserService {
@Autowired
private UserService userService;
@Test
public void hasMatchUser(){
boolean b1 = userService.hasMatchUser("admin","123456");
boolean b2 = userService.hasMatchUser("admin","1111");
assertTrue(b1);
assertTrue(!b2);
}
@Test
public void testFindUserByUserName() {
User user = userService.findUserByUserName("admin");
assertEquals(user.getUserName(), "admin");
}
@Test
public void testAddLoginLog() {
User user = userService.findUserByUserName("admin");
user.setUserId(1);
user.setUserName("admin");
user.setLastIp("192.168.12.7");
user.setLastVisit(new Date());
userService.loginSuccess(user);
}
}

11、运行测试用例
把鼠标放在某个测试方法，比如hasMatchUser()方法，右键，选择Run 'hasMatchUser()'，即可运行特定的方法。
当然，也可以把鼠标放在类名那里，右键，选择“TestUserService”，即将类里面的所有方法都运行一遍。



看到”All Tests Passed“，表示全部通过啦~~~



12、控制层
在src目录下创建包baobaotao.web，在该包下创建类LoginCommand和类LoginController。
LoginCommand：

package baobaotao.web;
/**
* Created by gao on 16-3-17.
*/
public class LoginCommand {
private String userName;
private String password;
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
}

LoginController：

package baobaotao.web;
import baobaotao.domain.User;
import baobaotao.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import java.util.Date;
/**
* Created by gao on 16-3-17.
*/
@Controller
public class LoginController{
@Autowired
private UserService userService;
@RequestMapping(value = "/index.html")
public String loginPage(){
return "login";
}
@RequestMapping(value = "/loginCheck.html")
public ModelAndView loginCheck(HttpServletRequest request,LoginCommand loginCommand){
boolean isValidUser =
userService.hasMatchUser(loginCommand.getUserName(),
loginCommand.getPassword());
if (!isValidUser) {
return new ModelAndView("login", "error", "用户名或密码错误。");
} else {
User user = userService.findUserByUserName(loginCommand
.getUserName());
user.setLastIp(request.getLocalAddr());
user.setLastVisit(new Date());
userService.loginSuccess(user);
request.getSession().setAttribute("user", user);
return new ModelAndView("main");
}
}
}

13、编写JSP视图页面
web文件夹下本来有一个index.jsp，现在再创建login.jsp和main.jsp这两个文件。



index.jsp：

<%@ page contentType="text/html;charset=utf-8" %>
<jsp:forward page="login.jsp"/>

login.jsp：

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<html>
<head>
<title>宝宝淘论坛登录</title>
</head>
<body>
<c:if test="${!empty error}">
<font color="red"><c:out value="${error}" /></font>
</c:if>
<form action="<c:url value="/loginCheck.html"/>" 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>

main.jsp：

<%--
Created by IntelliJ IDEA.
User: gao
Date: 16-3-17
Time: 下午8:42
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>宝宝淘论坛</title>
</head>
<body>
${user.userName},欢迎您进入宝宝淘论坛，您当前积分为${user.credits};
</body>
</html>

14、配置Spring MVC框架
1）修改web.xml文件

<?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">
<display-name>baobaotao</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<servlet>
<servlet-name>baobaotao</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>baobaotao</servlet-name>
<url-pattern>*.html</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

2）在WEB-INF下创建一个文件baobaotao-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 扫描web包，应用Spring的注解 -->
<context:component-scan base-package="baobaotao.web"/>
<!-- 配置视图解析器，将ModelAndView及字符串解析为具体的页面 -->
<bean   class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:viewClass="org.springframework.web.servlet.view.JstlView"
p:prefix="/"
p:suffix=".jsp" />
</beans>

15、配置Tomcat容器，运行程序
Run -> Edit Configuration -> Run/Debug Configurations -> 点击"+"号 -> 选择Tomcat -> 选择Local -> 点击Deployment -> 点击“+” 号 -> 选择springwebdemo_3 ->OK



界面：
用户名：admin，密码：123456



登录成功进入主界面。