ssm整合的登录
新建一个web工程，主要结构如下：
数据库创建如下：
控制层的代码FormController 类
package codeRose.controller; import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping; //动态页面跳转控制器
@Controller
public class FormController {
@RequestMapping(value="/{formName}")
public String loginForm(@PathVariable String formName){
return formName;
} }
控制层UserController 主要注意view.setViewName("success");的跳转。
package codeRose.controller; import javax.servlet.http.HttpSession; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.view.RedirectView; import codeRose.domain.User;
import codeRose.service.UserService; @Controller
public class UserController {
@Autowired
@Qualifier("userService")
private UserService userService;
/**
* 处理/login请求
*/
@RequestMapping(value="/login")
public ModelAndView login(String loginname,String password){
User user=userService.login(loginname, password);
ModelAndView view= new ModelAndView();
if(user!=null){
//登录成功，将user对象设置到HttpSession作用范围域中
//session.setAttribute("user", user);
//转发到main请求
//mv.setView(new RedirectView("/content/main.jsp"));
view.setViewName("success");
}else {
//登录失败，设置失败信息，并调转到登录页面 //mv.addObject("message","登录名和密码错误，请重新输入");
// mv.setViewName("loginForm");
view.setViewName("login");
}
return view;
}
}
dao层，实体类 User类
package codeRose.domain;
public class User {
/**
* 实体层，存放实体类
*/
private Integer id;
private String loginname;
private String password;
private String username;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getLoginname() {
return loginname;
}
public void setLoginname(String loginname) {
this.loginname = loginname;
}
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;
}
@Override
public String toString() {
return "User [id=" + id + ", loginname=" + loginname
+ ", password=" + password + ", username=" + username + "]";
}
}
持久层UserMapper
package codeRose.mapper;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select; import codeRose.domain.User;
//持久层包括数据库表映射的User.java的JavaBean对象，并使用了MyBatis的注解映射了对应的SQL语句 public interface UserMapper { @Select("select * from user where loginname=#{loginname} and password=#{password}")
User findWithLoginAndPassword(@Param("loginname")String loginname,@Param("password")String password); }
service层 UserService类 跟 UserServiceImpl 类
package codeRose.service;
import codeRose.domain.User;
public interface UserService {
/**
* 判断用户登录
* @param String loginname
* @param String password
* @return 找到返回User对象，没有找到返回null
* */
User login(String loginname,String password);
}
package codeRose.service; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service; import codeRose.domain.User;
import codeRose.mapper.UserMapper;
@Service("userService")
public class UserServiceImpl implements UserService{
@Autowired
private UserMapper userMapper; @Override
public User login(String loginname, String password) { return userMapper.findWithLoginAndPassword(loginname, password);
} }
数据库的db.properties
dataSource.driverClass=com.mysql.jdbc.Driver
dataSource.jdbcUrl=jdbc:mysql://localhost:3306/smm
dataSource.user=root
dataSource.password=
dataSource.maxPoolSize=20
dataSource.maxIdleTime = 1000
dataSource.minPoolSize=6
dataSource.initialPoolSize=5
主要的xml配置
applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mybatis="http://mybatis.org/schema/mybatis-spring"
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"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
http://mybatis.org/schema/mybatis-spring
http://mybatis.org/schema/mybatis-spring.xsd "> <!-- mybatis:scan会将codeRose.mapper包里的所有接口当作mapper配置，之后可以自动引入mapper类-->
<mybatis:scan base-package="codeRose.mapper"/> <!-- 扫描codeRose包下面的java文件，有Spring的相关注解的类，则把这些类注册为Spring的bean -->
<context:component-scan base-package="codeRose"/> <!-- 使用PropertyOverrideConfigurer后处理器加载数据源参数 -->
<context:property-override location="classpath:db.properties"/> <!-- 配置c3p0数据源 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"/> <!-- 配置SqlSessionFactory，org.mybatis.spring.SqlSessionFactoryBean是Mybatis社区开发用于整合Spring的bean -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"
p:dataSource-ref="dataSource"/> <!-- JDBC事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager"
p:dataSource-ref="dataSource"/> <!-- 启用支持annotation注解方式事务管理 -->
<tx:annotation-driven transaction-manager="transactionManager"/> </beans>
springmvc-config.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: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-4.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.2.xsd"> <!-- 自动扫描该包，SpringMVC会将包下用了@controller注解的类注册为Spring的controller -->
<context:component-scan base-package="codeRose.controller"/>
<!-- 设置默认配置方案 -->
<mvc:annotation-driven/>
<!-- 使用默认的Servlet来响应静态文件 -->
<mvc:default-servlet-handler/>
<!-- 视图解析器 -->
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 前缀 -->
<!-- 前缀 -->
<property name="prefix">
<value>/WEB-INF/view/</value>
</property>
<!-- 后缀 -->
<property name="suffix">
<value>.jsp</value>
</property>
</bean> </beans>
web.xml配置文件
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
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_2_5.xsd">
<!-- 配置spring核心监听器，默认会以 /WEB-INF/applicationContext.xml作为配置文件 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- contextConfigLocation参数用来指定Spring的配置文件 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<!-- 定义Spring MVC的前端控制器 -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/springmvc-config.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- 让Spring MVC的前端控制器拦截所有请求 -->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 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>
主要的HTML页面
<%@ 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>Insert title here</title>
</head>
<body>
<form action="login" method="post">
<label>账号：</label>
<input type="text" id="txtUsername" name="loginname" placeholder="请输入账号" /><br/>
<label>密码：</label>
<input type="password" id="txtPassword" name="password" placeholder="请输入密码" /><br/>
<input type="submit" value="提交" />
<input type="reset" value="重置" />
</form>
</body>
</html>
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