SSM整合
基本概念
mybatis
MyBatis 本是apache的一个开源项目iBatis, 2010年这个项目由apache software foundation 迁移到了google code,并且改名为MyBatis 。MyBatis是一个基于Java的持久层框架。iBATIS提供的持久层框架包括SQL Maps和Data Access Objects(DAO)MyBatis 消除了几乎所有的JDBC代码和参数的手工设置以及结果集的检索。MyBatis 使用简单的 XML或注解用于配置和原始映射,将接口和 Java 的POJOs(Plain Old Java Objects,普通的 Java对象)映射成数据库中的记录。
spring
Spring是一个开源框架,Spring是于2003 年兴起的一个轻量级的Java 开发框架,由Rod Johnson 在其著作Expert One-On-One J2EE Development and Design中阐述的部分理念和原型衍生而来。它是为了解决企业应用开发的复杂性而创建的。Spring使用基本的JavaBean来完成以前只可能由EJB完成的事情。然而,Spring的用途不仅限于服务器端的开发。从简单性、可测试性和松耦合的角度而言,任何Java应用都可以从Spring中受益。 简单来说,Spring是一个轻量级的控制反转(IoC)和面向切面(AOP)的容器框架。
spring mvc
Spring MVC属于SpringFrameWork的后续产品,已经融合在Spring Web Flow里面。Spring MVC 分离了控制器、模型对象、分派器以及处理程序对象的角色,这种分离让它们更容易进行定制。
SSM整合(以下实现登录功能)
1.导入依赖
<!-- https://mvnrepository.com/artifact/org.springframework/spring-beans --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>5.1.5.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-context --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>5.1.5.RELEASE</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.16</version> </dependency> <dependency> <groupId>commons-logging</groupId> <artifactId>commons-logging</artifactId> <version>1.2</version> </dependency> <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.9.2</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>5.1.5.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.38</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.6</version> </dependency> <dependency> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-core</artifactId> <version>1.3.2</version> </dependency> <!--引入需要的ehcache插件--> <dependency> <groupId>net.sf.ehcache</groupId> <artifactId>ehcache</artifactId> <version>1.2.3</version> </dependency> <!--mybatis整合ehcache的jar--> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-ehcache</artifactId> <version>1.0.0</version> </dependency> <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.2</version> </dependency> <!-- https://mvnrepository.com/artifact/com.alibaba/druid --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.10</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.25</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.7.25</version> <scope>test</scope> </dependency> <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.47</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>5.1.5.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>5.1.5.RELEASE</version> </dependency> <dependency> <groupId>javaee</groupId> <artifactId>javaee-api</artifactId> <version>5</version> </dependency> <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core --> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.9.8</version> </dependency> <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind --> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.9.8</version> </dependency> <!-- https://mvnrepository.com/artifact/commons-io/commons-io --> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.4</version> </dependency> <!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload --> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> <scope>provided</scope> </dependency>
2.
1. jdbc.properties配置
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/smbms?useUniCode=true&characterEncoding=utf-8
jdbc.username=root
jdbc.password=root
2. 大配置
<?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: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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <!--扫描注解--> <context:component-scan base-package="com.ssm"/> <!--添加MVC支持--> <mvc:annotation-driven/> <!--配置视图解析器--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/"/> <property name="suffix" value=".jsp"/> </bean> <!--释放静态资源--> <mvc:default-servlet-handler/> <!--加载配置文件--> <context:property-placeholder location="classpath:jdbc.properties"/> <!--配置数据源--> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"> <property name="driverClassName" value="${jdbc.driver}"/> <property name="url" value="${jdbc.url}"/> <property name="username" value="${jdbc.username}"/> <property name="password" value="${jdbc.password}"/> </bean> <!--SqlSessionFactory--> <bean class="org.mybatis.spring.SqlSessionFactoryBean"> <!--加载数据源--> <property name="dataSource" ref="dataSource"/> <!--加载Mybatis配置文件--> <property name="configLocation" value="classpath:mybatis-config.xml"/> </bean> <!--扫描Dao层--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.ssm.dao"/> </bean> <!--开启事务注解支持--> <tx:annotation-driven/> <!--事务管理器--> <bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"/> </bean> </beans>
3. mybatis-config.xml配置文件
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <!--根节点--> <configuration> <settings> <!--log4j配置引入--> <setting name="logImpl" value="LOG4J"/> </settings> <!--设置别名--> <typeAliases> <!--全局设置别名:默认以类名作为别名--> <package name="com.ssm.entity"/> </typeAliases> <!--mappers 代表小配置集合--> <mappers> <!--<mapper resource="org/mybatis/example/BlogMapper.xml"/>--> <package name="com.ssm.dao"/> </mappers> </configuration>
4. web.xml
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" > <web-app> <display-name>Archetype Created Web Application</display-name> <filter> <filter-name>characterEncodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <!--初始化参数--> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> <!--强制使用UTF-8编码--> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>characterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!--中央调度器--> <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:applicationContext.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> </web-app>
5. 实体类
public class Smbms_User implements Serializable { private Integer id; private String usercode; private String username; private String userpassword; private Integer gender; private Date birthday; private String phone; private String address; private Integer userrole; private Integer createdby; private Date creationdate; private Integer modifyby; private Date modifydate;
6. dao层
@Repository public interface Smbms_UserMapper { @Select("select * from smbms_user where userCode=#{user_code} and userPassword=#{user_password}") public Smbms_User login(@Param("user_code") String user_code, @Param("user_password") String user_password); }
7. dao.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.ssm.dao.Smbms_UserMapper" > <resultMap id="BaseResultMap" type="com.ssm.entity.Smbms_User" > <id column="id" property="id" jdbcType="BIGINT" /> <result column="userCode" property="usercode" jdbcType="VARCHAR" /> <result column="userName" property="username" jdbcType="VARCHAR" /> <result column="userPassword" property="userpassword" jdbcType="VARCHAR" /> <result column="gender" property="gender" jdbcType="INTEGER" /> <result column="birthday" property="birthday" jdbcType="DATE" /> <result column="phone" property="phone" jdbcType="VARCHAR" /> <result column="address" property="address" jdbcType="VARCHAR" /> <result column="userRole" property="userrole" jdbcType="INTEGER" /> <result column="createdBy" property="createdby" jdbcType="BIGINT" /> <result column="creationDate" property="creationdate" jdbcType="TIMESTAMP" /> <result column="modifyBy" property="modifyby" jdbcType="BIGINT" /> <result column="modifyDate" property="modifydate" jdbcType="TIMESTAMP" /> </resultMap>
8. Service业务接口层
public interface Smbms_UserService { public Smbms_User login(String user_code, String user_password); }
9. ServiceImpl业务实现层
@Service("smbms_UserService") public class Smbms_UserServcieImpl implements Smbms_UserService { //植入Dao层对象 @Resource private Smbms_UserMapper smbms_userMapper; //事务 /* @Transactional(isolation=Isolation.DEFAULT)*/ @Override public Smbms_User login(String user_code, String user_password) { return smbms_userMapper.login(user_code,user_password); }
10. 编写控制器
@Controller @RequestMapping("/user") public class Smbms_UserController { //植入Service层分对象 @Resource private Smbms_UserService smbms_userService; @RequestMapping("/login") public String doLogin(Smbms_User smbms_user, HttpSession session){ Smbms_User user = smbms_userService.login(smbms_user.getUsercode(), smbms_user.getUserpassword()); if(user!=null){ session.setAttribute("user",user); return "welcome"; } return "login"; } }
11. Login.jsp页面
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>登陆</title> </head> <body> <div> <form action="/user/login" method="post"> 用户名:<input type="text" name="usercode"/> 密码:<input type="password" name="userpassword"/> <input type="submit" value="登陆"/> </form> </div> </body> </html>
12. welcome.jsp页面
<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %> <html> <head> <title>欢迎</title> </head> <body> 欢迎光临:${user.username} </body> </html>