Java SSM Spring+Spring MVC+Mybatis整合

第一章：搭建整合环境
一. 搭建整合环境
1. 整合说明：SSM整合可以使用多种方式，咱们会选择XML + 注解的方式
2. 整合的思路
　　1. 先搭建整合的环境
　　2. 先把Spring的配置搭建完成
　　3. 再使用Spring整合SpringMVC框架
　　4. 最后使用Spring整合MyBatis框架
3. 创建数据库和表结构
　　1. 语句

create database ssm;
use ssm;
create table account(
id int primary key auto_increment,
name varchar(20),
money double
);

4. 创建maven的工程
　　1. 创建ssm_parent父工程（打包方式选择pom，必须的）
　　2. 创建ssm_web子模块（打包方式是war包）
　　3. 创建ssm_service子模块（打包方式是jar包）
　　4. 创建ssm_dao子模块（打包方式是jar包）
　　5. 创建ssm_domain子模块（打包方式是jar包）
　　6. web依赖于service，service依赖于dao，dao依赖于domain
　　7. 在ssm_parent的pom.xml文件中引入坐标依赖

<properties>
<spring.version>5.0.2.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>
<!-- 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>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.2</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<encoding>UTF-8</encoding>
<showWarnings>true</showWarnings>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>

　　8. 部署ssm_web的项目，只要把ssm_web项目加入到tomcat服务器中即可
5. 编写实体类，在ssm_domain项目中编写

import java.io.Serializable;
public class Account implements Serializable{
private static final long serialVersionUID = 7355810572012650248L;
private Integer id;
private String name;
private Double money;
public Integer getId() {
return id;
} 
public void setId(Integer id) {
this.id = id;
}
 public String getName() {
return name;
}
 public void setName(String name) {
this.name = name;
} 
public Double getMoney() {
return money;
}
public void setMoney(Double money) {
this.money = money;
}
}

6. 编写dao接口

import java.util.List;
import cn.itcast.domain.Account;
public interface AccountDao {
public void saveAccount(Account account);
public List<Account> findAll();
}

7. 编写service接口和实现类

import java.util.List;
import cn.itcast.domain.Account;
public interface AccountService {
public void saveAccount(Account account);
public List<Account> findAll();
} 

import java.util.List;
import org.springframework.stereotype.Service;
import cn.itcast.dao.AccountDao;
import cn.itcast.domain.Account;
import cn.itcast.service.AccountService;
@Service("accountService")
public class AccountServiceImpl implements AccountService {
private AccountDao account;
public void saveAccount(Account account) {
} p
ublic List<Account> findAll() {
System.out.println("业务层：查询所有账户...");
return null;
}
}

第二章：Spring框架代码的编写
一. 搭建和测试Spring的开发环境
1. 在ssm_web项目中创建applicationContext.xml的配置文件，编写具体的配置信息。

<?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">
<!-- 开启注解扫描，要扫描的是service和dao层的注解，要忽略web层注解，因为web层让SpringMVC框架
去管理 -->
<context:component-scan base-package="cn.itcast">
<!-- 配置要忽略的注解 -->
<context:exclude-filter type="annotation"
expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
</beans>

2. 在ssm_web项目中编写测试方法，进行测试

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import cn.itcast.service.AccountService;
public class ServiceTest {
@Test
public void run1() {
ApplicationContext ac = new
ClassPathXmlApplicationContext("classpath:applicationContext.xml");
AccountService as = (AccountService) ac.getBean("accountService");
as.findAll();
}
}

第三章：Spring整合SpringMVC框架
一. 搭建和测试SpringMVC的开发环境
1. 在web.xml中配置DispatcherServlet前端控制器

<!-- 配置前端控制器：服务器启动必须加载，需要加载springmvc.xml配置文件 -->
<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:springmvc.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>/</url-pattern>
</servlet-mapping>

2. 在web.xml中配置DispatcherServlet过滤器解决中文乱码

<!-- 配置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>

3. 创建springmvc.xml的配置文件，编写配置文件

<?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">
<!-- 扫描controller的注解，别的不扫描 -->
<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="viewResolver"

class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- JSP文件所在的目录 -->
<property name="prefix" value="/WEB-INF/pages/" />
<!-- 文件的后缀名 -->
<property name="suffix" value=".jsp" />
</bean>
<!-- 设置静态资源不过滤 -->
<mvc:resources location="/css/" mapping="/css/**" />
<mvc:resources location="/images/" mapping="/images/**" />
<mvc:resources location="/js/" mapping="/js/**" />
<!-- 开启对SpringMVC注解的支持 -->
<mvc:annotation-driven />
</beans>

4. 测试SpringMVC的框架搭建是否成功

　　1. 编写index.jsp和list.jsp编写，超链接

<a href="account/findAll">查询所有</a>

　　2. 创建AccountController类，编写方法，进行测试

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
@RequestMapping("/account")
public class AccountController {
/**
* 查询所有的数据
* @return
*/
@RequestMapping("/findAll")
public String findAll() {
System.out.println("表现层：查询所有账户...");
return "list";
}
}

二. Spring整合SpringMVC的框架
1. 目的：在controller中能成功的调用service对象中的方法。

2. 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（该监听器只能加载WEB-INF目录下的applicationContext.xml的配置文
件）。

<!-- 配置Spring的监听器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listenerclass>
</listener>
<!-- 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>

3. 在controller中注入service对象，调用service对象的方法进行测试

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import cn.itcast.service.AccountService;
@Controller
@RequestMapping("/account")
public class AccountController {
@Autowired
private AccountService accoutService;
/**
* 查询所有的数据
* @return
*/
@RequestMapping("/findAll")
public String findAll() {
System.out.println("表现层：查询所有账户...");
accoutService.findAll();
return "list";
}
}

第四章：Spring整合MyBatis框架
一. 搭建和测试MyBatis的环境
1. 在web项目中编写SqlMapConfig.xml的配置文件，编写核心配置文件

<?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>
<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="cn.itcast.dao"/>
</mappers>
</configuration>

2. 在AccountDao接口的方法上添加注解，编写SQL语句

import java.util.List;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import cn.itcast.domain.Account;
public interface AccountDao {
@Insert(value="insert into account (name,money) values (#{name},#{money})")
public void saveAccount(Account account);
@Select("select * from account")
public List<Account> findAll();
}

3. 编写测试的方法

import java.io.InputStream;
import java.util.List;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Test;
import cn.itcast.dao.AccountDao;
import cn.itcast.domain.Account;
public class Demo1 {
@Test
public void run1() throws Exception {
// 加载配置文件
InputStream inputStream = Resources.getResourceAsStream("SqlMapConfig.xml");
// 创建工厂
SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(inputStream);
// 创建sqlSession对象
SqlSession session = factory.openSession();
// 获取代理对象
AccountDao dao = session.getMapper(AccountDao.class);
// 调用查询的方法
List<Account> list = dao.findAll();
for (Account account : list) {
System.out.println(account);
} /
/ 释放资源
session.close();
inputStream.close();
} @
Test
public void run2() throws Exception {
Account account = new Account();
account.setName("熊大");
account.setMoney(400d);
// 加载配置文件
InputStream inputStream = Resources.getResourceAsStream("SqlMapConfig.xml");
// 创建工厂
SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(inputStream);
// 创建sqlSession对象
SqlSession session = factory.openSession();
// 获取代理对象
AccountDao dao = session.getMapper(AccountDao.class);

dao.saveAccount(account);
// 提交事务
session.commit();
// 释放资源
session.close();
inputStream.close();
}
}

二. Spring整合MyBatis框架
1. 目的：把SqlMapConfig.xml配置文件中的内容配置到applicationContext.xml配置文件中

<!-- 配置C3P0的连接池对象 -->
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<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SqlSession的工厂 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 配置扫描dao的包 -->
<bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="cn.itcast.dao"/>
</bean>

2. 在AccountDao接口中添加@Repository注解
3. 在service中注入dao对象，进行测试
4. 代码如下

package cn.itcast.dao;
import java.util.List;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;
import cn.itcast.domain.Account;
@Repository
public interface AccountDao {
@Insert(value="insert into account (name,money) values (#{name},#{money})")
public void saveAccount(Account account);
@Select("select * from account")
public List<Account> findAll();
}
package cn.itcast.service.impl;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import cn.itcast.dao.AccountDao;
import cn.itcast.domain.Account;
import cn.itcast.service.AccountService;
@Service("accountService")
public class AccountServiceImpl implements AccountService {
@Autowired
private AccountDao accountDao;
public void saveAccount(Account account) {
} p
ublic List<Account> findAll() {
System.out.println("业务层：查询所有账户...");
return accountDao.findAll();
}
}
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import cn.itcast.domain.Account;
import cn.itcast.service.AccountService;
@Controller
@RequestMapping("/account")
public class AccountController {
@Autowired
private AccountService accoutService;
/**
* 查询所有的数据
* @return
*/
@RequestMapping("/findAll")
public String findAll() {
System.out.println("表现层：查询所有账户...");
List<Account> list = accoutService.findAll();
for (Account account : list) {
System.out.println(account);
} r
eturn "list";
}
}

5. 配置Spring的声明式事务管理

<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
aop:config
<aop:advisor advice-ref="txAdvice" pointcut="execution(public * cn.itcast.service..ServiceImpl.*(..))"/>
/aop:config

6. 测试保存帐户的方法

@RequestMapping("/saveAccount") 
public String saveAccount(Account account) {
accoutService.saveAccount(account); return "list"; }