ssm整合

文章目录

第一步 环境准备目录结构1、创建数据库和表结构2、创建 Maven 工程3、导入坐标和依赖pom.xml4、编写实体类（1）补全目录结构（2）编写实体类 5、编写持久层接口6、编写业务层接口 第二步 整合步骤1、保证Spring框架在web工程中独立运行（1）编写spring配置文件并导入约束（2）使用注解配置业务层和持久层（3）测试Spring能否独立运行（测试类） 2、保证SpringMVC在web工程中独立运行（1）在web.xml中配置核心控制器（DispatcherServlet）（2）编写SpringMVC的配置文件（3）编写Controller和jsp页面 3、Spring整合Springmvc（1）配置监听器实现启动服务器创建容器（2）Controller方法 4、保证Mybatis框架在web工程中独立运行（1）编写AccountDao配置文件（2）编写SQLMapConfig配置文件（3）测试运行结果 5、Spring整合Mybatis（1）Spring接管Mybatis的Session工厂（spring的配置文件applicationContext.xml），之后SQLMapConfig.xml失效。（2）配置自动扫描所有Mapper接口和文件（spring的配置文件applicationContext.xml）（3）整合测试结果（4）配置Spring的事务（spring的配置文件applicationContext.xml）（5）整合测试结果 6、测试SSM整合结果（1）编写测试jsp（2）修改控制器中的方法（3）测试运行结果

第一步 环境准备

目录结构

1、创建数据库和表结构

create database ssm; create table account( id int primary key auto_increment, name varchar(100), money double );

2、创建 Maven 工程

3、导入坐标和依赖pom.xml

<properties> <spring.version>5.0.2.RELEASE</spring.version> <slf4j.version>1.6.6</slf4j.version> <log4j.version>1.2.12</log4j.version> <shiro.version>1.2.3</shiro.version> <mybatis.version>3.4.5</mybatis.version> </properties> <dependencies> <!-- spring --> <dependency><!--AOP相关--> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.6.8</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${spring.version}</version> </dependency> <dependency><!--context容器--> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</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-orm</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</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-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${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>8.0.17</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><!--整合--> <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>

4、编写实体类

（1）补全目录结构

（2）编写实体类

public class Account implements Serializable { private Integer id; private String name; private Double money; ... ... ···set/get/toString

5、编写持久层接口

/** * 账户持久层接口 */ public interface IAccountDao { //查询所有账户 public List<Account> findAll(); //保存账户 public void saveAccount(Account account); }

6、编写业务层接口

/** * 账户业务层接口 */ public interface IAccountService { //查询所有账户 public List<Account> findAll(); //保存账户 public void saveAccount(Account account); }

第二步 整合步骤

1、保证Spring框架在web工程中独立运行

（1）编写spring配置文件并导入约束

<?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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" 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/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 配置 spring 创建容器时要扫描的包 --> <context:component-scan base-package="cn.itcast"> <!--制定扫包规则，不扫描@Controller 注解的 JAVA 类，其他的还是要扫描 --> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" /> </context:component-scan> </beans>

（2）使用注解配置业务层和持久层

1、业务层

/** * 业务层实现类 */ @Service("accountService") public class AccountServiceImpl implements IAccountService { @Autowired private AccountDaoImpl accountDao; //查询所有 public List<Account> findAll() { System.out.println("IAccountServiceImpl.findAll"); accountDao.findAll(); return null; } //保存账户 public void saveAccount(Account account) { System.out.println("IAccountServiceImpl.saveAccount"); accountDao.saveAccount(account); } }

2、持久层接口

/** * 账户持久层接口 */ //@Repository("accountDao") public interface IAccountDao { //查询所有账户 public List<Account> findAll(); //保存账户 public void saveAccount(Account account); }

3、持久层实现类

/** * 持久层实现类 */ @Repository("accountDao") public class AccountDaoImpl implements IAccountDao { //查询所有 public List<Account> findAll() { System.out.println("AccountDaoImpl.findAll"); return null; } //保存账户 public void saveAccount(Account account) { System.out.println("AccountDaoImpl.saveAccount"); } }

（3）测试Spring能否独立运行（测试类）

public class Test01Spring { @Test public void spring1(){ //加载配置文件 ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:applicationContext.xml"); //获取对象 IAccountService accountService = (IAccountService) ac.getBean("accountService"); //调用方法 accountService.findAll(); accountService.saveAccount(new Account()); } } 单元测试运行结果： > D:\JDK\jdk1.8.0_161\bin\java.exe > log4j:WARN No appenders could be found for logger log4j:WARN Please > initialize the log4j system properly. > > IAccountServiceImpl.findAll > AccountDaoImpl.findAll > IAccountServiceImpl.saveAccount > AccountDaoImpl.saveAccount > > Process finished with exit code 0

2、保证SpringMVC在web工程中独立运行

（1）在web.xml中配置核心控制器（DispatcherServlet）

<!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springmvc的核心控制器--> <servlet> <servlet-name>dispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!--配制初始化参数，用于读取springmvc.xml的配置文件--> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc.xml</param-value> </init-param> <!--配置servlet的对象的创建时间点： 应用加载时创建。取值只能是非0正整数，表示启动顺序--> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcherServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!--配置springmvc编码过滤器--> <filter> <filter-name>characterEncodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <!--设置过滤器中的属性值--> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> <!--启动过滤器--> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <!--过滤所有请求--> <filter-mapping> <filter-name>characterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>

（2）编写SpringMVC的配置文件

<?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"> <!--开启注解要扫描的包，只扫描Controller注解--> <context:component-scan base-package="cn.itcast"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!--配置视图解析器--> <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/pages/"></property> <property name="suffix" value=".jsp"></property> </bean> <!--过滤静态资源--> <!--开启springmvc注解的支持--> <mvc:annotation-driven/> </beans>

（3）编写Controller和jsp页面

1、 Controller类

/** * 账户web */ @Controller @RequestMapping("/account") public class AccountController { @RequestMapping("/findAll") public String findAll(){ return "list"; } }

2、 list.jsp页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> <h3>list.jsp显示所有账户!!!</h3> </body> </html>

3、 index.jsp页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> <a href="account/findAll">测试Controller</a> </body> </html>

运行结果

3、Spring整合Springmvc

（1）配置监听器实现启动服务器创建容器

web <!--spring整合springmvc--> <!--配置spring的监听器,用于启动服务时加载容器。 默认只加载WEB-INF目录下的applicationContext.xml--> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!--设置配置文件的路径,手动指定spring配置文件位置--> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param>

（2）Controller方法

/** * 账户web */ @Controller @RequestMapping("/account") public class AccountController { @Autowired private IAccountService accountService; @RequestMapping("/findAll") public String findAll(){ accountService.findAll(); return "list"; } } 运行结果 [2020-07-04 12:34:37,013] [2020-07-04 12:34:37,013] IAccountServiceImpl.findAll AccountDaoImpl.findAll

4、保证Mybatis框架在web工程中独立运行

（1）编写AccountDao配置文件

/** * 账户持久层接口 */ @Repository("accountDao") public interface IAccountDao { //查询所有账户 @Select("Select * from account") public List<Account> findAll(); //保存账户 @Insert("insert into account(name,money) values (#{name},#{money})") public void saveAccount(Account account); } 注意：删掉持久层实现类

（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> <properties resource="jdbcConfig.properties"></properties> <environments default="mysql"> <environment id="mysql"> <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> <!--引入映射配置文件--> <mappers> <!--<mapper class="cn.itcast.dao.IAccountDao"></mapper>--> <package name="cn.itcast.dao"/> </mappers> </configuration>

properties文件中的内容：

jdbc.driver=com.mysql.cj.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/ssm?useSSL=false&amp;serverTimezone=UTC jdbc.username=root jdbc.password=root

（3）测试运行结果

public class Test02MyBatis { @Test public void mybatis() throws IOException { InputStream in = Resources.getResourceAsStream("SqlMapConfig.xml"); SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(in); SqlSession session = factory.openSession(true); IAccountDao accountDao = session.getMapper(IAccountDao.class); List<Account> all = accountDao.findAll(); for(Account account:all){ System.out.println(account); } session.commit(); session.close(); in.close(); } } 运行结果 Account{id=1, name='无敌', money=100.0} Account{id=2, name='无敌', money=100.0} Account{id=3, name='宇宙', money=200.0}

5、Spring整合Mybatis

（1）Spring接管Mybatis的Session工厂（spring的配置文件applicationContext.xml），之后SQLMapConfig.xml失效。

<!--spring整合Mybatis框架--> <!--加载配置文件--> <context:property-placeholder location="classpath:jdbcConfig.properties"></context:property-placeholder> <!--配置SqlSessionFactory工厂--> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!--数据库连接池--> <property name="dataSource" ref="dataSource"></property> <!--加载mybatis的全局配置文件--> <property name="configLocation" value="classpath:SqlMapConfig.xml"></property> </bean> <!--配置连接池--> <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}"/> </bean>

（2）配置自动扫描所有Mapper接口和文件（spring的配置文件applicationContext.xml）

<!--配置AccountDao(配置Mapper扫描器)--> <bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="cn.itcast.dao"></property> </bean>

（3）整合测试结果

1、业务层实现类

/** * 业务层实现类 */ @Service("accountService") public class AccountServiceImpl implements IAccountService { @Autowired private IAccountDao accountDao; //查询所有 public List<Account> findAll() { //System.out.println("IAccountServiceImpl.findAll"); return accountDao.findAll(); } //保存账户 public void saveAccount(Account account) { //System.out.println("IAccountServiceImpl.saveAccount"); accountDao.saveAccount(account); } }

2、index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> <a href="account/findAll">测试Controller</a> </body> </html>

3、list.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %> <html> <head> <title>Title</title> </head> <body> <h3>${list[0]}</h3> <h3>${list[0]}</h3> <h3>${list[0]}</h3> </body> </html>

4、Controller实现类

/** * 账户web */ @Controller @RequestMapping("/account") public class AccountController { @Autowired private IAccountService accountService; @RequestMapping("/findAll") public String findAll(Model model){ List<Account> list = accountService.findAll(); model.addAttribute("list",list); return "list"; } }

5、测试结果

（4）配置Spring的事务（spring的配置文件applicationContext.xml）

<!--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"></property> </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(* cn.itcast.service.impl.*ServiceImpl.*(..))"/> </aop:config>

（5）整合测试结果

6、测试SSM整合结果

（1）编写测试jsp

1、编写 index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> <a href="account/findAll">测试Controller</a> <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="提交"> </form> </body> </html>

2、编写 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> <c:forEach items="${list}" var="account"> ${account}<br> </c:forEach> </body> </html>

（2）修改控制器中的方法

/** * 账户web */ @Controller @RequestMapping("/account") public class AccountController { @Autowired private IAccountService accountService; @RequestMapping("/findAll") public String findAll(Model model){ //调用service方法 List<Account> list = accountService.findAll(); model.addAttribute("list",list); return "list"; } @RequestMapping("/save") public void findAll(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException { //调用service方法 accountService.saveAccount(account); response.sendRedirect(request.getContextPath()+"/account/findAll"); return; } }

（3）测试运行结果