SSM框架整合---实现简单登录注册功能

1、新建工程，整合jar包

2、数据库（oracle）键表，包含id，name，password三个字段

3、配置db.propertise文件，用于配置数据源

url=jdbc:oracle:thin:@localhost:1521:XE
user=oracle
passwd=123
driver=oracle.jdbc.OracleDriver

3、配置spring相关文件，取名为spring.xml，放在src目录下，详见配置文件

<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
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 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> 
<!--引入propertise文件  -->
<!--传统方式引入  -->
<!-- 	<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> -->
<!-- 		<property name="locations" value="classpath:db.properties"></property> -->
<!-- 	</bean> -->

<!--简化方式  -->
<context:property-placeholder location="classpath:db.properties"/>

<!--1.配置数据源:c3p0  -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${driver}" />
<property name="jdbcUrl" value="${url}" />
<property name="user" value="${user}" />
<property name="password" value="${passwd}" />
</bean>

<!--2.配置mybatis的SqlSession的工厂: SqlSessionFactoryBean dataSource:引用数据源 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="typeAliasesPackage" value="com.ssm.bean" />
</bean>

<!-- 3. 自动扫描mybatis映射文件和接口的包 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.ssm.dao"></property>
</bean>

<!--4.配置事务管理器  -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>

<!--5.开启注解进行事务管理   transaction-manager：引用上面定义的事务管理器-->
<tx:annotation-driven transaction-manager="transactionManager"/>
</beans>

4、配置springmvc相关文件，取名为springmvc.xml,同样放在src目录下

<?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:mvc="http://www.springframework.org/schema/mvc"
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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

<!--1.开启Springioc 自动扫描注解包  -->
<context:component-scan base-package="com.ssm"/>

<!--2. 开启注解 -->
<mvc:annotation-driven />

<!--3.配置视图解析器  -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/"></property>
<property name="suffix" value=".jsp"></property>
</bean>

<!--4.注解映射器（可省）  -->
<!--   	<bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"></bean> -->

<!--5.配置适配器（不需时可省）  -->
<!--   	<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
在业务方法的返回值和权限之间使用@ResponseBody注解表示返回值对象需要转成JSON文本
<property name="messageConverters">
<list>
<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"/>
</list>
</property>
</bean> -->
</beans>

5、web.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>ssm</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>

<!--Spring核心监听器  -->
<!--在服务器启动时加载Spring容器，且只会加载一次  -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring.xml</param-value>
</context-param>

<!--配置Springmvc核心控制器  -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
</servlet>

<!-- Map all requests to the DispatcherServlet for handling -->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.action</url-pattern>
</servlet-mapping>

<!--配置由Spring 提供的针对中文乱码的编码过滤器 -->
<!-- 编码过滤器 -->
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

</web-app>

6、持久层功能实现

userDao.java （映射接口）

package com.ssm.dao.user;

import org.apache.ibatis.annotations.Param;

import com.ssm.bean.User;

/**
* 持久层映射接口
* @author Nocol
*
*/
public interface UserDao {

//添加用户
public void addUser(User user);

//根据用户名和密码查询用户
//注解的两个参数会自动封装成map集合，括号内即为键
public void findUserByNameAndPwd(@Param("name")String name, @Param("password")String password);

}

UserDao.xml （映射文件）

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.ssm.dao.user.UserDao">

<!--注意sql语句没有分号结尾  -->

<insert id="addUser" parameterType="User">
insert into t_user(id,name,password) values(#{id},#{name},#{password})
</insert>

<!--注意这里的参数类型是parameterType而不是parameterMap，因为返回的是单个类型  -->
<select id="findUserByNameAndPwd"  parameterType="map"  resultType="User">
select t.name,t.password from t_user t where name=#{name} and password=#{password}
</select>

</mapper>

7、业务层功能实现

UserService.java

package com.ssm.service;

import com.ssm.bean.User;

public interface UserService {
//用户注册
void regist(User user);
//用户登录
void login(String name, String password);

}

UserServiceImpl.java

package com.ssm.service.Imp;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.ssm.bean.User;
import com.ssm.dao.user.UserDao;
import com.ssm.service.UserService;

/**
* 业务层
* @author Nocol
*
*/

@Service
public class UserServiceImpl implements UserService {

@Autowired
private UserDao userDao;

@Override
public void regist(User user) {
// TODO Auto-generated method stub
userDao.addUser(user);
}

@Override
public void login(String name, String password) {
// TODO Auto-generated method stub
userDao.findUserByNameAndPwd(name,password);
}
}

8、控制层功能实现

UserAction.java

package com.ssm.controller.user;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.ssm.bean.User;
import com.ssm.service.UserService;

/**
* 控制层
* @author Nocol
*
*/
@Controller
@RequestMapping("/user")
public class UserAction {
//注入Service
@Autowired
private UserService userService;

@RequestMapping("regist")
public String regist(User user,Model model){

System.out.println("用户注册："+user.getName()+user.getPassword());

user.setId(1);
userService.regist(user);

model.addAttribute("msg", "注册成功");
//注册成功后跳转success.jsp页面
return "success";
}

@RequestMapping("login")
public String login(String name,String password,Model model){

System.out.println("用户登录："+name+password);

/*Map<String, String> map=new LinkedHashMap<String,String>();

map.put("name", user.getName());
map.put("password", user.getPassword());*/

userService.login(name,password);

model.addAttribute("msg", "登录成功");

return "success";
}
}

9、jsp页面实现

regist.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>用户注册</title>
</head>
<body>
<form action="${pageContext.request.contextPath }/user/regist.action">
<table border="1">
<tr>
<td>用户名</td>
<td><input type="text" name="name"></td>
</tr>
<tr>
<td>密码</td>
<td><input type="text" name="password"></td>
</tr>
<tr>
<td><input type="submit" value="注册"></td>
</tr>
</table>
</form>
</body>
</html>

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>用户登录</title>
</head>
<body>
<form action="${pageContext.request.contextPath }/user/login.action">
<table border="1">
<tr>
<td>用户名</td>
<td><input type="text" name="name"></td>
</tr>
<tr>
<td>密码</td>
<td><input type="text" name="password"></td>
</tr>
<tr>
<td><input type="submit" value="登录"></td>
</tr>
</table>
</form>
</body>
</html>

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</title>
</head>
<body>
${msg }</br>
<a href="${pageContext.request.contextPath }/login.jsp">去登录</a>
</body>
</html>