ssm

目录

User.javaUserController.javaUserDao.javaUserService.javaIUserService.javaUserMapper.xmlapplicationContext.xmldb.propertiesspring-mvc.xmlapplicationContext.xmlweb.xmlfailure.jspIndex.jspok.jsp pring 1.控制反转-》控制权的转移 2.依赖注入 DI 3.面向切面 aop springmvc : servlet mybatis : jdbc

User.java

package com.zhongruan.bean; public class User { public User() { } public User(int id, String username, String password) { this.id = id; this.username = username; this.password = password; } public User(String username, String password) { this.username = username; this.password = password; } private int id; private String username; private String password; public int getId() { return id; } public void setId(int id) { this.id = id; } 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; } @Override public String toString() { return "User{" + "id=" + id + ", username='" + username + '\'' + ", password='" + password + '\'' + '}'; } }

UserController.java

package com.zhongruan.controller; import com.zhongruan.bean.User; import com.zhongruan.service.IUserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; @Controller @RequestMapping("/user") public class UserController { @Autowired private IUserService userService; @RequestMapping("/login.do") public ModelAndView login(User user){ boolean flag = userService.login(user.getUsername(), user.getPassword()); ModelAndView modelAndView=new ModelAndView(); if(flag){ modelAndView.setViewName("../ok"); }else { modelAndView.setViewName("../failure"); } return modelAndView; } }

UserDao.java

package com.zhongruan.dao; import com.zhongruan.bean.User; public interface UserDao { User findUserByUserName(String username); }

UserService.java

package com.zhongruan.service.impl; import com.zhongruan.bean.User; import com.zhongruan.dao.UserDao; import com.zhongruan.service.IUserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; @Service public class UserService implements IUserService { @Autowired private UserDao userDao; @Override public boolean login(String username, String password) { User user = userDao.findUserByUserName(username); if (user!=null && user.getPassword().equals(password)){ return true; } return false; } }

IUserService.java

package com.zhongruan.service; public interface IUserService { boolean login(String username, String password); }

UserMapper.xml

<?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.zhongruan.dao.UserDao" > <select id="findUserByUserName" parameterType="String" resultType="user"> select * from tb_user where username=#{username} </select> </mapper>

applicationContext.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: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-4.3.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd"> <!-- 1.配置数据库相关参数properties的属性：${url} --> <context:property-placeholder location="classpath:db.properties"/> <!-- 2.配置数据源 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="${jdbc.driver}"/> <property name="jdbcUrl" value="${jdbc.url}"/> <property name="user" value="${jdbc.username}"/> <property name="password" value="${jdbc.password}"/> <property name="maxPoolSize" value="30"/> <property name="minPoolSize" value="2"/> </bean> <!-- 3.配置SqlSessionFactory对象 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 注入数据库连接池 --> <property name="dataSource" ref="dataSource"/> <!-- 扫描bean包 使用别名 --> <property name="typeAliasesPackage" value="com.zhongruan.bean"></property> <!--配置加载映射文件 UserMapper.xml--> <property name="mapperLocations" value="classpath:mapper/*.xml"/> </bean> <!-- 自动生成dao,mapper--> <!-- 4.配置扫描Dao接口包，动态实现Dao接口，注入到spring容器中 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 给出需要扫描Dao接口包 --> <property name="basePackage" value="com.zhongruan.dao"/> <!-- 注入sqlSessionFactory --> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> </bean> <!--自动扫描--> <context:component-scan base-package="com.zhongruan"/> <!-- 配置事务--> <!-- 5.配置事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"/> </bean> <!-- 6.开启事务注解--> <tx:annotation-driven></tx:annotation-driven> </beans>

db.properties

jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/wzsxy?useSSL=true&characterEncoding=utf-8 jdbc.username=root jdbc.password=123456

spring-mvc.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" 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-4.3.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd"> <!-- 1.注解扫描位置--> <context:component-scan base-package="com.zhongruan.controller" /> <!-- 2.配置映射处理和适配器--> <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/> <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/> <!-- 3.视图的解析器--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/pages/" /> <property name="suffix" value=".jsp" /> </bean> </beans>

applicationContext.xml

// An highlighted block var foo = 'bar';

web.xml

<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1"> <!-- 配置加载类路径的配置文件 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:applicationContext.xml</param-value> </context-param> <!-- 配置监听器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <listener> <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class> </listener> <!-- 解决中文乱码过滤器 --> <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> <!-- 前端控制器（加载classpath:spring-mvc.xml 服务器启动创建servlet） --> <servlet> <servlet-name>dispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 配置初始化参数，创建完DispatcherServlet对象，加载springmvc.xml配置文件 --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-mvc.xml</param-value> </init-param> <!-- 服务器启动的时候，让DispatcherServlet对象创建 --> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcherServlet</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> </web-app>

failure.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> failure </body> </html>

Index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>$Title$</title> </head> <body> <form action="/user/login.do" method="post"> username:<input name="username" type="text"> password:<input name="password" type="password"> <input type="submit" value="login"> </form> </body> </html>

ok.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> ok </body> </html>