最基础的SSM框架整合篇
作者：互联网
一、简单理解
Spring、Spring MVC和MyBatis的整合主要原理就是将我们在单独使用Spring MVC和MyBatis过程中需要自己实例化的类都交由Ioc容器来管理，过程分为两步：
第一步整合Spring和Spring MVC，前提是项目已单独配置Spring和Spring MVC且能正常运行，主要步骤为先在项目中创建对应的service接口和它们的实现类，并通过注解实现类和在Spring配置文件中开启注解扫描的方式将接口实现类交由Ioc容器管理。接着在Controller响应请求的类中添加接口为成员变量，并且也通过注解的方式将其交由Ioc容器管理，最后，我们需要把Spring配置文件的加载设置为项目启动时，这里通过在web.xml文件中配置Spring监听器实现，至此就可以实现Spring和Spring MVC的整合。
第二整合Spring和MyBatis，前提也是项目已单独配置Spring和MyBatis且能正常运行，这里需要导入额外的jar包mybatis-spring.jar，这里的版本需要根据MyBatis版本来确认，且本项目通过c3p0来配置数据库连接池，也需要导入c3p0的jar包。主要步骤为先将MyBatis配置文件中的内容（配置连接池部分）转移到Spring配置文件中（原先的MyBatis配置文件也就可以删除了），并且在Spring配置文件中配置SqlSessionFactroy工厂和sql语句对应接口所在包，这也就是将工厂和接口都交由Ioc容器管理，至此就可以实现Spring和MyBatis的整合。
二、代码展示
1.配置文件
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
id="WebApp_ID" version="3.1">
<display-name>SSMProject</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<!-- 配置Spring监听器，默认加载WEB-INF目录下的applicationContext.xml配置文件 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 前端控制器 -->
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 配置Spring MVC配置文件的位置和名称 -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
<!-- 表示容器在启动时立即加载dispatcherServlet -->
<load-on-startup>1</load-on-startup>
</servlet>
<!-- 让Spring MVC控制器拦截前端所有请求 -->
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<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>
<init-param>
<param-name>forceRequestEncoding</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>forceResponseEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
applicationContext.xml（Spring配置文件）
<?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/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
<!-- 开启注解扫描，非controller -->
<context:component-scan base-package="com.yh">
<context:exclude-filter type="annotation"
expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<!-- Spring整合MyBatis -->
<!-- 配置连接池 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<property name="driverClass" value="com.microsoft.sqlserver.jdbc.SQLServerDriver" />
<!-- 驱动类名 -->
<property name="jdbcUrl"
value="jdbc:sqlserver://127.0.0.1:1433;databaseName=onlineshoppingmall" /><!--
url访问地址 -->
<property name="user" value="sa" /><!-- 链接数据库的用户名 -->
<property name="password" value="12345yehuan" /><!-- 链接数据库的密码 -->
<property name="initialPoolSize" value="10" />
<property name="minPoolSize" value="5" />
<property name="maxPoolSize" value="20" />
<property name="maxIdleTime" value="0" />
</bean>
<!-- 配置SqlSessionFactroy工厂 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 配置接口所在包 -->
<bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.yh.mybatis.mapper"></property>
</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="*" isolation="DEFAULT"/>
</tx:attributes>
</tx:advice>
<!-- 配置AOP增强 -->
<aop:config>
<aop:pointcut expression="execution(* com.yh.service.*.*(..))" id="txPoint"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/>
</aop:config>
</beans>
springmvc.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:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd">
<!-- 开启注解扫描，只扫描controller注解 -->
<context:component-scan base-package="com.yh.controller">
<context:include-filter type="annotation"
expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<!-- 视图解析器对象 -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="" />
<property name="suffix" value=".jsp" />
<property name="order" value="1" />
</bean>
<!-- 解决访问html等其他资源404 -->
<mvc:default-servlet-handler />
<!-- 开启SpringMVC注解支持 -->
<mvc:annotation-driven />
</beans>
2.service接口和它的实现类
AddressService.java
package com.yh.service;
import java.util.List;
import com.yh.entity.Address;
public interface AddressService {
int addAddress(Address address);
List<Address> loadAddress();
}
AddressServiceImpl.java
package com.yh.service.impl;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.yh.entity.Address;
import com.yh.mybatis.mapper.AddressMapper;
import com.yh.service.AddressService;
@Service("addressService")
public class AddressServiceImpl implements AddressService {
@Autowired
private AddressMapper am;
@Override
public int addAddress(Address address) {
return am.addAddress(address);
}
@Override
public List<Address> loadAddress() {
System.out.println("业务层查找地址信息");
return am.loadAddress();
}
}
3.MyBatis的sql语句配置文件和接口
AddressMapper.xml
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.yh.mybatis.mapper.AddressMapper">
<select id="loadAddress" resultType="com.yh.entity.Address">
select* from address
</select>
<insert id="addAddress" parameterType="com.yh.entity.Address">
insert into address
(buyerid,consignee)values(#{buyerId},#{consignee})
</insert>
</mapper>
AddressMapper.java
package com.yh.mybatis.mapper;
import java.util.List;
import org.springframework.stereotype.Repository;
import com.yh.entity.Address;
@Repository
public interface AddressMapper {
int addAddress(Address address);
List<Address> loadAddress();
}
4.响应前端请求的Controller类
AddressController.java
package com.yh.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import com.yh.entity.Address;
import com.yh.service.AddressService;
@Controller
@RequestMapping(value = "/address")
public class AddressController {
@Autowired
private AddressService addressService;
@ResponseBody
@RequestMapping(value = "/loadAddress", produces = "application/json; charset=utf-8")
public String loadAddress() {
System.out.println("表现层查询所有地址");
Address addr = new Address();
addr.setBuyerId(99);
addr.setConsignee("叶欢");
int result = addressService.addAddress(addr);
System.out.println(result != 0 ? "成功" : "失败");
return null;
}
}
5实体类
Address.java
package com.yh.entity;
import java.io.Serializable;
public class Address implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
private int buyerId;
private String consignee;public int getBuyerId() {
return buyerId;
}
public void setBuyerId(int buyerId) {
this.buyerId = buyerId;
}
public String getConsignee() {
return consignee;
}
public void setConsignee(String consignee) {
this.consignee = consignee;
}
@Override
public String toString() {
return "Address [addressId=" + addressId + ", buyerId=" + buyerId + ", consignee=" + consignee + ", telephone="
+ telephone + ", detail=" + detail + ", defaultAddress=" + defaultAddress + "]";
}
}
标签：yh,框架,Spring,SSM,整合,Address,import,com,public 来源： https://www.cnblogs.com/YeHuan/p/11776129.html