总体整合思路
1.Spring与Mybatis整合 :
关键在于==spring-mybatis.xml==配置文件,主要配置自动扫描、自动注入以及数据库等。
JDBC属性文件==jdbc.properties.==
日志配置log4j配置文件==log4j2.xml==
2.整合Spring MVC:
springmvc的配置文件单独放,需要在web.xml里面配置整合,==dispatcher-servelet.xml==主要配置自动扫描、视图模式、注解的启动等。
==web.xml==主要配置dispatcher-servelet.xml文件以及监听、过滤器、欢迎页等。
准备工作
- 库表结构:
CREATE TABLE `tbl_user_info` (
`user_id` int NOT NULL COMMENT 'id',
`user_school` varchar(64) DEFAULT NULL COMMENT '用户所属学校',
`user_name` varchar(32) NOT NULL COMMENT '用户姓名',
PRIMARY KEY (`user_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3 COMMENT='用户表';
- maven支持新建一个空白的web项目并根据maven结构设置java和resources文件夹(可参见springmvc部分项目初始化)
导包、静态资源配置
看上一个随笔 about (pom.xml)
创建项目层级文件夹
controller、service、dao(接口)、model、mapping(存放xml)
个人创建顺序为:model,Dao,mapping,service,Impl,controller
model
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Member {
private String uname;
private String upass;
}
Dao
public interface MemberMapper {
public List<Member> getUserList();
public int insertMember(Member member);
public int deleteMember(String uname);
}
mapping
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.fzx.dao.MemberMapper">
<resultMap id="BaseResultMap" type="com.fzx.model.Member">
<result column="uname" property="uname" />
<result column="upass" property="upass" />
</resultMap>
<select id="getUserList" resultMap="BaseResultMap">
SELECT * FROM member
</select>
<insert id="insertMember">
INSERT INTO member (uname,upass) VALUES (#{uname}, #{upass})
</insert>
<delete id="deleteMember">
DELETE FROM member WHERE uname = #{uname}
</delete>
</mapper>
service
public interface MemberService {
public List<Member> getUserList();
public int insertMember(Member member);
public int deleteMember(String uname);
}
Impl
@Service
public class MemberServiceImpl implements MemberService {
@Autowired
MemberMapper memberMapper;
@Override
public List<Member> getUserList() {
List<Member> userList = memberMapper.getUserList();
return userList;
}
@Override
public int insertMember(Member member) {
int i = memberMapper.insertMember(member);
return i;
}
@Override
public int deleteMember(String uname) {
return memberMapper.deleteMember(uname);
}
}
数据库配置文件 /resources/dbconfig.properties
db.driverClassName=com.mysql.cj.jdbc.Driver
db.validationQuery=SELECT 1
db.url=jdbc:mysql://localhost:3306/20220215?useSSL=true&useUnicode=true&characterEncoding=utf8&serverTimezone=UTC
db.username=root
db.password=94844896
创建spring-mybatis配置文件 /resources/spring-mybatis.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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
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-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/aop
https://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- 自动扫描 -->
<!-- 在xml配置了这个标签后,spring可以自动去扫描base-pack下面或者子包下面的java文件,-->
<!-- 如果扫描到有@Component @Controller@Service等这些注解的类,则把这些类注册为bean-->
<context:component-scan base-package="com.fzx" />
<!-- 引入配置文件 -->
<!-- 1.关联数据库文件 -->
<context:property-placeholder location="classpath:dbconfig.properties"/>
<!-- ========================================配置数据源========================================= -->
<!-- 配置数据源,使用的是alibaba的Druid(德鲁伊)数据源 -->
<bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
init-method="init" destroy-method="close">
<property name="url" value="${db.url}" />
<property name="username" value="${db.username}" />
<property name="password" value="${db.password}" />
<!-- 初始化连接大小 -->
<property name="initialSize" value="0" />
<!-- 连接池最大空闲 -->
<!-- 说明maxIdle已经被替代了,用maxActive和minIdle来表示数据库连接池的maxPoolSize和minPoolSize.-->
<!-- <property name="maxIdle" value="20" />-->
<!-- 连接池最大使用连接数量 -->
<property name="maxActive" value="20" />
<!-- 连接池最小空闲 -->
<property name="minIdle" value="0" />
<!-- 获取连接最大等待时间 -->
<property name="maxWait" value="60000" />
<property name="validationQuery" value="${db.validationQuery}" />
<property name="testOnBorrow" value="false" />
<property name="testOnReturn" value="false" />
<property name="testWhileIdle" value="true" />
<!-- 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒 -->
<property name="timeBetweenEvictionRunsMillis" value="60000" />
<!-- 配置一个连接在池中最小生存的时间,单位是毫秒 -->
<property name="minEvictableIdleTimeMillis" value="25200000" />
<!-- 打开removeAbandoned功能 -->
<property name="removeAbandoned" value="true" />
<!-- 1800秒,也就是30分钟 -->
<property name="removeAbandonedTimeout" value="1800" />
<!-- 关闭abanded连接时输出错误日志 -->
<property name="logAbandoned" value="true" />
</bean>
<!-- ========================================针对myBatis的配置项============================== -->
<!-- 配置sqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 实例化sqlSessionFactory时需要使用上述配置好的数据源以及SQL映射文件 -->
<property name="dataSource" ref="dataSource" />
<!-- 自动扫描com/liyw/mapping目录下的所有SQL映射的xml文件, 这样UserInfoMapper.xml就可以被自动扫描
-->
<property name="mapperLocations" value="classpath:com/fzx/mapping/*.xml" />
</bean>
<!-- 配置扫描器 -->
<!-- 扫描所有的mapper-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 扫描com.liyw.dao这个包以及它的子包下的所有映射接口类 -->
<property name="basePackage" value="com.fzx.dao" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
</bean>
<!-- ========================================分隔线========================================= -->
<!-- 配置Spring的事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!--Xml方式配置事务-->
<!-- 拦截器方式配置事物 -->
<tx:advice id="transactionAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="append*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="modify*" propagation="REQUIRED" />
<tx:method name="edit*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="remove*" propagation="REQUIRED" />
<tx:method name="repair" propagation="REQUIRED" />
<tx:method name="delAndRepair" propagation="REQUIRED" />
<tx:method name="get*" propagation="SUPPORTS" />
<tx:method name="find*" propagation="SUPPORTS" />
<tx:method name="load*" propagation="SUPPORTS" />
<tx:method name="search*" propagation="SUPPORTS" />
<tx:method name="datagrid*" propagation="SUPPORTS" />
<tx:method name="*" propagation="SUPPORTS" />
</tx:attributes>
</tx:advice>
<aop:config>
<aop:pointcut id="transactionPointcut" expression="execution(* com.fzx.service..*Impl.*(..))" />
<aop:advisor pointcut-ref="transactionPointcut" advice-ref="transactionAdvice" />
</aop:config>
<!--配置druid监控spring jdbc -->
<bean id="druid-stat-interceptor"
class="com.alibaba.druid.support.spring.stat.DruidStatInterceptor">
</bean>
<bean id="druid-stat-pointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut"
scope="prototype">
<property name="patterns">
<list>
<value>com.fzx.service.*</value>
<value>com.fzx.dao.*</value>
</list>
</property>
</bean>
<aop:config>
<aop:advisor advice-ref="druid-stat-interceptor"
pointcut-ref="druid-stat-pointcut" />
</aop:config>
</beans>
以上步骤和我们在spring+mybatis集成基本一致,我们也一样写一个测试用例来测一下这个部分的集成是否成功。
在main的同级结构下创建test文件夹并增加支持。
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:spring-mybatis.xml"})
public class testMybatis {
@Resource
private MemberService memberService = null;
@Resource
private UserService userService = null;
private static Logger LOGGER = LoggerFactory.getLogger(testMybatis.class);
@Test
public void test1() {
List<Member> userList = memberService.getUserList();
for (Member member:
userList) {
System.out.println(member);
}
}
}