【SSM整合】 配置加注解的方式

整合的基本思路

• Spring去整合其他框架。
• 先保证每个框架能单独使用，再去整合。
  

搭建整合环境

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(7,2));

2.pow.xml

<?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>org.example</groupId>
<artifactId>SSM</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>

<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>5.1.16.RELEASE</spring.version>
<slf4j.version>1.6.6</slf4j.version>
<log4j.version>1.2.12</log4j.version>
<mysql.version>5.1.6</mysql.version>
<mybatis.version>3.4.5</mybatis.version>
</properties>

<dependencies>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.7</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>
<!--整合坐标-->
<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>

创建实体类，dao接口，service接口和实现类

spring框架代码的编写

搭建和测试Spring的开发环境

使用注解注入，交给ioc

• spring配置文件 ： 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.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，不需要处理controller-->
<context:component-scan base-package="com.wei">
<!--不扫描controller，交给springmvc扫描-->
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>

</beans>

• 测试spring

package com.wei.test;

import com.wei.service.AccountService;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestSpring {

@Test
public void run1(){
ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
AccountService accountService = context.getBean("accountService", AccountService.class);
accountService.findAll();

}

}

测试成功注入之后继续

Spring整合SpringMVC框架

搭建和测试springMVC的开发环境

• web.xml
• 配置前端控制器、中文乱码过滤器、配置Spring的监听器、设置配置文件的路径

<!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>

<!--设置配置文件的路径(设置监听器在哪去加载applicationContext.xml)-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>

<!--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>

<!--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>

<!--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>

</web-app>

• springmvc.xml 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">

<!--开启注解扫描，只扫描controller-->
<context:component-scan base-package="com.wei.controller" />

<!--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 name="suffix" value=".jsp" />
</bean>

<!--让springMVC 不处理静态资源 .css  .js   . html  .mp3 等等 -->
<mvc:default-servlet-handler />

<!--mvc注解支持-->
<mvc:annotation-driven />

</beans>

测试springMVC是否搭建成功。能够通过网页请求到Controller，并跳转到list.jsp 即搭建成功。

@Controller
@RequestMapping("/account")
public class AccountController  {
@RequestMapping("/findAll")
public String findAll(){
System.out.println("findAll ... 执行了");
return "list";
}
}

Spring整合SpringMVC的框架

• 目的：在Controller中能成功的调用service对象中的方法。
• 在项目启动的时候，就去加载applicationContext.xml的配置文件。在web.xml中配置ContextLoaderListener监听器。（默认加载WEB-INF目录下的applicationContext.xml）
• 以下代码在上面已经一同配置了。

<!--设置配置文件的路径(设置监听器在哪去加载applicationContext.xml)-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<!--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>

• 在controller中注入service对象调用service对象的方法进行测试

@Controller
@RequestMapping("/account")
public class AccountController  {
@Autowired
private AccountService accountService;
@RequestMapping("/findAll")
public String findAll(Model model){
System.out.println("controller 查询所有账户");
List<Account> accounts = accountService.findAll();
model.addAttribute("accounts",accounts);
return "list";
}
}

Spring整合mybatis框架

搭建和测试mybatis的环境

• sqlMapConfig.xml ，整合完删除。

<?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>
<environments default="mysql">
<environment id="mysql">
<transactionManager type="JDBC"/>
<dataSource type="POOLED">
<property name="driver" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql:///ssm"/>
<property name="username" value="root"/>
<property name="password" value="root"/>
</dataSource>
</environment>
</environments>
<!-- 使用的是注解 -->
<mappers>
<!-- <mapper class="cn.itcast.dao.AccountDao"/> -->
<!-- 该包下所有的dao接口都可以使用 -->
<package name="com.wei.dao"/>
</mappers>
</configuration>

• AccountDao接口上方法添加注解，或者编写配置文件

@Repository("accountDao")
public interface AccountDao {
@Select("select * from account")
public List<Account> findAll();

@Insert("insert into account(name,money) values(#{name},#{money})")
public void saveAccount(Account account);
}

• mybatis测试通过之后。整合spring

public class TestMybatis {
@Test
public void run() throws IOException {
InputStream is = Resources.getResourceAsStream("sqlMapConfig.xml");
SqlSessionFactoryBuilder sqlSessionFactoryBuilder = new SqlSessionFactoryBuilder();
SqlSessionFactory build = sqlSessionFactoryBuilder.build(is);
SqlSession sqlSession = build.openSession();
AccountDao mapper = sqlSession.getMapper(AccountDao.class);
List<Account> all = mapper.findAll();
sqlSession.close();is.close();
}
@Test
public void run2() throws IOException {
InputStream is = Resources.getResourceAsStream("sqlMapConfig.xml");
SqlSessionFactoryBuilder sqlSessionFactoryBuilder = new SqlSessionFactoryBuilder();
SqlSessionFactory build = sqlSessionFactoryBuilder.build(is);
SqlSession sqlSession = build.openSession();
AccountDao mapper = sqlSession.getMapper(AccountDao.class);
Account account = new Account();account.setName("test");account.setMoney(1000d);
mapper.saveAccount(account);
sqlSession.commit();
sqlSession.close();is.close();
}
}

Spring整合mybatis框架

1.目的：把sqlMapConfig.xml的内容配置到applicationContext.xml配置文件

• 配置sqlSessionFactroy工厂
• 得到工厂–>得到sqlSession–>得到代理对象。

<!--spring整合mybatis框架-->
<!--配置c3p0连接池-->
<bean id="c3p0DataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="com.mysql.jdbc.Driver"/>
<property name="jdbcUrl" value="jdbc:mysql:///ssm"/>
<property name="user" value="root"/>
<property name="password" value="root"/>
</bean>
<!-- druid数据库连接池 -->
<bean id="druidDataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql:///ssm"/>
<property name="username" value="root"/>
<property name="password" value="root"/>
</bean>

<!--配置sqlsessionFactory-->
<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="c3p0DataSource" />
</bean>

<!--配置AccountDao接口所在包，说明生成哪些的代理-->
<bean id="mapperScannerConfigurer"  class="org.mybatis.spring.mapper.MapperScannerConfigurer" >
<property name="basePackage" value="com.wei.dao" />
</bean>

1. 在Dao接口添加@Repository注解
2. 在service注入dao对象，进行测试
3. 代码如下

//dao接口
package com.wei.dao;
@Repository
public interface AccountDao {
@Select("select * from account")
public List<Account> findAll();

@Insert("insert into account(name,money) values(#{name},#{money})")
public void saveAccount(Account account);
}
//service实现类
package com.wei.service.impl;
@Service("accountService")
public class AccountServiceImpl implements AccountService {
@Autowired
private AccountDao accountDao;
@Override
public List<Account> findAll() {
System.out.println("业务层，查询所有账户");
return  accountDao.findAll();
}

@Override
public void saveAccount(Account account) {
System.out.println("业务层，保存账户");
accountDao.saveAccount(account);
return;
}
}

//测试
@Controller
@RequestMapping("/account")
public class AccountController  {
@Autowired
private AccountService accountService;
@RequestMapping("/findAll")
public String findAll(Model model){
System.out.println("controller 查询所有账户");
List<Account> accounts = accountService.findAll();
model.addAttribute("accounts",accounts
4000
);
System.out.println(accounts);
return "list";
}
@RequestMapping("/save")
public void saveAccount(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException {
System.out.println("controller 保存账户");
accountService.saveAccount(account);
response.sendRedirect(request.getContextPath()+"/account/findAll");
}
}

5.在applicationContext.xml配置spring的声明式事务

<!--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="c3p0DataSource"></property>
</bean>

<!--配置事务通知-->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="find*" propagation="SUPPORTS"  read-only="true"/>
<tx:method name="*"  propagation="REQUIRED"  isolation="DEFAULT" read-only="false" />
</tx:attributes>
</tx:advice>

<!--配置aop增强-->
<aop:config>
<aop:pointcut id="pt1" expression="execution(* com.wei.service.impl.*.*(..))" />
<aop:advisor advice-ref="txAdvice" pointcut-ref="pt1" />
</aop:config>

6.进行测试保存方法。