SSM 综合整合基础案例

一、环境准备1.创建数据库2.引入jar坐标依赖3.实体类4.持久层接口5.业务层接口6.业务层实现类 二、编写Spring框架1.编写applicationContext.xml配置文件2.使用注解配置业务层实现类 三、编写SpringMVC框架1.编写web.xml文件2.编写springmvc.xml配置文件3.编写Controller4.编写index.jsp页面和list.jsp查询跳转页面 四、整合Spring和SpringMVC1.在web.xml中配置监听器实现启动服务创建容器2.实现Controller对Service(业务层)对象依赖注入 五、编写MyBatis框架1.注解配置实现接口功能2.编写SqlMapConfig配置文件3.编写jdbcConfig.properties配置文件 六、整合Spring和MyBatis1.Spring接管MyBatis的Session工厂和配置自动扫描所有Mapper接口和文件2.增加mybatis框架增加配置事务3.增加持久层接口注解配置4.实现(Service)业务层对(dao)持久层对象依赖注入5.完善AccountController控制类 七、结果展示1.index.jsp页面2.查询测试3.保存测试

一、环境准备

1.创建数据库

CREATE DATABASE ssm; USE ssm; CREATE TABLE account( id INT PRIMARY KEY AUTO_INCREMENT, NAME VARCHAR(20), money DOUBLE );

2.引入jar坐标依赖

<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.hzxy</groupId> <artifactId>SSM</artifactId> <version>1.0-SNAPSHOT</version> <packaging>war</packaging> <name>SSM Maven Webapp</name> <!-- FIXME change it to the project's website --> <url>http://www.example.com</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.compiler.source>1.8</maven.compiler.source> <maven.compiler.target>1.8</maven.compiler.target> <spring.version>5.0.2.RELEASE</spring.version> <slf4j.version>1.6.6</slf4j.version> <log4j.version>1.2.12</log4j.version> <mysql.version>8.0.13</mysql.version> <mybatis.version>3.4.5</mybatis.version> </properties> <dependencies> <!-- spring --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.6.8</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>compile</scope> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.version}</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.0</version> <scope>provided</scope> </dependency> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- log start --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4j.version}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>${slf4j.version}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>${slf4j.version}</version> </dependency> <!-- log end --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.0</version> </dependency> <dependency> <groupId>c3p0</groupId> <artifactId>c3p0</artifactId> <version>0.9.1.2</version> <type>jar</type> <scope>compile</scope> </dependency> </dependencies> <build> <finalName>SSM</finalName> <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) --> <plugins> <plugin> <artifactId>maven-clean-plugin</artifactId> <version>3.1.0</version> </plugin> <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --> <plugin> <artifactId>maven-resources-plugin</artifactId> <version>3.0.2</version> </plugin> <plugin> <artifactId>maven-compiler-plugin</artifactId> <version>3.8.0</version> </plugin> <plugin> <artifactId>maven-surefire-plugin</artifactId> <version>2.22.1</version> </plugin> <plugin> <artifactId>maven-war-plugin</artifactId> <version>3.2.2</version> </plugin> <plugin> <artifactId>maven-install-plugin</artifactId> <version>2.5.2</version> </plugin> <plugin> <artifactId>maven-deploy-plugin</artifactId> <version>2.8.2</version> </plugin> </plugins> </pluginManagement> </build> </project>

3.实体类

package com.hzxy.domain; import java.io.Serializable; public class Account implements Serializable { private Integer id; private String name; private double money; public void setId(Integer id) { this.id = id; } public void setName(String name) { this.name = name; } public void setMoney(double money) { this.money = money; } public Integer getId() { return id; } public String getName() { return name; } public double getMoney() { return money; } }

4.持久层接口

package com.hzxy.dao; import com.hzxy.domain.Account; import java.util.List; public interface AccountDao { //查询所有账户信息 public List<Account> findAll(); //保存账户信息 public void saveAccount(Account account); }

5.业务层接口

package com.hzxy.service; import com.hzxy.domain.Account; import java.util.List; public interface AccountService { //查询所有账户信息 public List<Account> findAll(); //保存账户信息 public void saveAccount(Account account); }

6.业务层实现类

package com.hzxy.service.impl; import com.hzxy.domain.Account; import com.hzxy.service.AccountService; import java.util.List; public class AccountServiceImpl implements AcountService { @Override public List<Account> findAll() { System.out.println("业务层查询所有账户信息..."); return null; } @Override public void saveAccount(Account account) { System.out.println("业务层保存账户..."); } }

二、编写Spring框架

1.编写applicationContext.xml配置文件

1. 导入约束 2.开启注解的扫描，希望处理service和dao，controller不需要Spring框架去处理

<?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"> <!--开启注解的扫描，希望处理service和dao，controller不需要Spring框架去处理--> <context:component-scan base-package="com.hzxy" > <!--配置哪些注解不扫描--> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" /> </context:component-scan> </beans>

2.使用注解配置业务层实现类

@Service(“accountService”) 把AccountServiceImpl这个类交给IOC容器管理

package com.hzxy.service.impl; import com.hzxy.domain.Account; import com.hzxy.service.AccountService; import org.springframework.stereotype.Service; import java.util.List; @Service("accountService") public class AccountServiceImpl implements AccountService { @Override public List<Account> findAll() { System.out.println("业务层查询所有账户信息..."); return null; } @Override public void saveAccount(Account account) { System.out.println("业务层保存账户..."); } }

三、编写SpringMVC框架

1.编写web.xml文件

1. 配置前端核心控制器（DispatcherServlet） 2. 解决乱码问题

<!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> <!--配置前端控制器--> <servlet> <servlet-name>dispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!--加载springmvc.xml配置文件--> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc.xml</param-value> </init-param> <!--启动服务器，创建该servlet--> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcherServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!--解决中文乱码的过滤器--> <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>

2.编写springmvc.xml配置文件

1. 开启注解扫描，只扫描Controller注解 2. 配置的视图解析器对象 3. 过滤静态资源 4. 开启SpringMVC注解的支持

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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"> <!--开启注解扫描，只扫描Controller注解--> <context:component-scan base-package="com.hzxy"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" /> </context:component-scan> <!--配置的视图解析器对象--> <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/pages/"/> <property name="suffix" value=".jsp"/> </bean> <!--过滤静态资源--> <mvc:resources location="/css/" mapping="/css/**" /> <mvc:resources location="/images/" mapping="/images/**" /> <mvc:resources location="/js/" mapping="/js/**" /> <!--开启SpringMVC注解的支持--> <mvc:annotation-driven/> </beans>

3.编写Controller

@Controller @RequestMapping("/account") @RequestMapping("/findAll")

package com.hzxy.controller; import com.hzxy.domain.Account; import com.hzxy.service.AccountService; 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 javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.util.List; @Controller @RequestMapping("/account") public class AccountController { @RequestMapping("/findAll") public String findAll(Model model){ System.out.println("表现层：查询所有账户..."); // 调用service的方法 List<Account> list = accountService.findAll(); model.addAttribute("list",list); return "list"; } }

4.编写index.jsp页面和list.jsp查询跳转页面

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> <a href="account/findAll">测试查询</a> <!--测试保存方法--> <form action="account/save" method="post"> 姓名：<input type="text" name="name" /><br/> 金额：<input type="text" name="money" /><br/> <input type="submit" value="保存"/><br/> </form> </body> </html>

list.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <html> <head> <title>Title</title> </head> <body> <h3>查询所有的帐户</h3> <c:forEach items="${list}" var="account"> ${account.name} </c:forEach> </body> </html>

四、整合Spring和SpringMVC

1.在web.xml中配置监听器实现启动服务创建容器

service和controller类都已经放进Spring的IOC容器中

<!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> <!--配置Spring的监听器，默认只加载WEB-INF目录下的applicationContext.xml配置文件--> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!--设置配置文件的路径--> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <context-param> <param-name/> <param-value/> </context-param> </web-app>

2.实现Controller对Service(业务层)对象依赖注入

@Autowired

private AccountService accountService;

package com.hzxy.controller; import com.hzxy.domain.Account; import com.hzxy.service.AccountService; 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 javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.util.List; public class AccountController { @Autowired private AccountService accountService; @RequestMapping("/findAll") public String findAll(Model model){ System.out.println("表现层：查询所有账户..."); // 调用service的方法 List<Account> list = accountService.findAll(); model.addAttribute("list",list); return "list"; } }

五、编写MyBatis框架

1.注解配置实现接口功能

@Select(“select * from account”) @Insert(“insert into account (name,money) values (#{name},#{money})”)

package com.hzxy.dao; import com.hzxy.domain.Account; import org.apache.ibatis.annotations.Insert; import org.apache.ibatis.annotations.Select; import java.util.List; public interface AccountDao { // 查询所有账户 @Select("select * from account") public List<Account> findAll(); // 保存帐户信息 @Insert("insert into account (name,money) values (#{name},#{money})") public void saveAccount(Account account); }

2.编写SqlMapConfig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"> <configuration> <!-- 配置连接数据库的信息 --> <properties resource="jdbcConfig.properties"></properties> <!-- 配置mybatis的环境 --> <environments default="mysql"> <environment id="mysql"> <!-- 配置事务管理 --> <transactionManager type="JDBC"></transactionManager> <dataSource type="pooled"> <property name="driver" value="${jdbc.driver}"/> <property name="url" value="${jdbc.url}"/> <property name="username" value="${jdbc.username}"/> <property name="password" value="${jdbc.password}"/> </dataSource> </environment> </environments> <!-- 指定映射文件位置 --> <mappers> <package name="cn.hzxy.dao"/> </mappers> </configuration>

3.编写jdbcConfig.properties配置文件

jdbc.driver=com.mysql.cj.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/mybastis?serverTimezone=UTC jdbc.username=root jdbc.password=123456

六、整合Spring和MyBatis

整合思路： 把mybatis配置文件（SqlMapConfig.xml）中内容配置到spring配置文件中同时，把mybatis配置文件的内容清掉。

1.Spring接管MyBatis的Session工厂和配置自动扫描所有Mapper接口和文件

Spring整合MyBatis框架 1. 配置连接池 2. 配置SqlSessionFactory工厂 3. 配置SqlSessionFactory工厂 4. 配置AccountDao接口所在包

2.增加mybatis框架增加配置事务

配置Spring框架声明式事务管理 1. 配置事务管理器 2. 配置事务通知 3. 配置AOP增强

<?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"> <!--开启注解的扫描，希望处理service和dao，controller不需要Spring框架去处理--> <context:component-scan base-package="com.hzxy" > <!--配置哪些注解不扫描--> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" /> </context:component-scan> <!--Spring整合MyBatis框架--> <!--配置连接池--> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="com.mysql.cj.jdbc.Driver"/> <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/ssm?serverTimezone=UTC"/> <property name="user" value="root"/> <property name="password" value="123456"/> </bean> <!--配置SqlSessionFactory工厂--> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> </bean> <!--配置AccountDao接口所在包--> <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.hzxy.dao"/> </bean> <!--配置Spring框架声明式事务管理--> <!--配置事务管理器--> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <!--配置事务通知--> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="find*" read-only="true"/> <tx:method name="*" isolation="DEFAULT"/> </tx:attributes> </tx:advice> <!--配置AOP增强--> <aop:config> <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.hzxy.service.impl.*ServiceImpl.*(..))"/> </aop:config> </beans>

3.增加持久层接口注解配置

@Repository 把AccountDao也交给Spring的IOC容器

package com.hzxy.dao; import com.hzxy.domain.Account; import org.apache.ibatis.annotations.Insert; import org.apache.ibatis.annotations.Select; import org.springframework.stereotype.Repository; import java.util.List; @Repository public interface AccountDao { // 查询所有账户 @Select("select * from account") public List<Account> findAll(); // 保存帐户信息 @Insert("insert into account (name,money) values (#{name},#{money})") public void saveAccount(Account account); }

4.实现(Service)业务层对(dao)持久层对象依赖注入

@Service(“accountService”) @Autowired private AccountDao accountDao;

package com.hzxy.service.impl; import com.hzxy.dao.AccountDao; import com.hzxy.domain.Account; import com.hzxy.service.AccountService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; @Service("accountService") public class AccountServiceImpl implements AccountService { @Autowired private AccountDao accountDao; public List<Account> findAll() { System.out.println("业务层：查询所有账户..."); return accountDao.findAll(); } public void saveAccount(Account account) { System.out.println("业务层：保存帐户..."); accountDao.saveAccount(account); } }

5.完善AccountController控制类

package com.hzxy.controller; import com.hzxy.domain.Account; import com.hzxy.service.AccountService; 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 javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.util.List; public class AccountController { @Autowired private AccountService accountService; @RequestMapping("/findAll") public String findAll(Model model){ System.out.println("表现层：查询所有账户..."); // 调用service的方法 List<Account> list = accountService.findAll(); model.addAttribute("list",list); return "list"; } /** * 保存 * 重定向方法返回查询数据 * @return */ @RequestMapping("/save") public void save(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException { accountService.saveAccount(account); response.sendRedirect(request.getContextPath()+"/account/findAll"); return; } }

七、结果展示

1.index.jsp页面

2.查询测试

3.保存测试