mybatis与spring集成和spring整合mybatis分页插件
文章目录
- 1、Mybatis与spring集成
- 1、.导入pom依赖
- 2、利用mybatis逆向工程生成模型层层代码**
- 3、编写配置文件
- 4、代码测试
- 2、Aop整合pagehelper插件
1、Mybatis与spring集成
1、.导入pom依赖
1.1 添加spring相关依赖(5.0.2.RELEASE)
spring-core
spring-beans
spring-context
spring-orm
spring-tx
spring-aspects
spring-web
1.2 添加mybatis相关依赖
mybatis核心：mybatis(3.4.5)
Mybatis分页：pagehelper(5.1.2)
1.3 spring整合mybatis(1.3.1)
mybatis-spring
1.4 添加dbcp2连接池
commons-dbcp2(2.1.1)
commons-pool2(2.4.3)
1.5 添加日志配置(2.9.1)
log4j-core
log4j-api
log4j-web
1.6 其他
junit(4.12)
javax.servlet-api(4.0.0)
lombok(1.18.2)
注：使用mybatis-generator插件，pom文件添加支持
文件如下
<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>4.0.0modelVersion>
<groupId>com.hyfgroupId>
<artifactId>ssmartifactId>
<version>1.0-SNAPSHOTversion>
<packaging>warpackaging>
<name>ssm Maven Webappname>
<url>http://www.example.comurl>
<properties>
<project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
<maven.compiler.source>1.8maven.compiler.source>
<maven.compiler.target>1.8maven.compiler.target>
<maven.compiler.plugin.version>3.7.0maven.compiler.plugin.version>
<spring.version>5.0.2.RELEASEspring.version>
<mybatis.version>3.4.5mybatis.version>
<mysql.version>5.1.44mysql.version>
<pagehelper.version>5.1.2pagehelper.version>
<mybatis.spring.version>1.3.1mybatis.spring.version>
<commons.dbcp2.version>2.1.1commons.dbcp2.version>
<commons.pool2.version>2.4.3commons.pool2.version>
<log4j2.version>2.9.1log4j2.version>
<junit.version>4.12junit.version>
<servlet.version>4.0.0servlet.version>
<lombok.version>1.18.2lombok.version>
properties>
<dependencies>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-contextartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-ormartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-txartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-aspectsartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-testartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatisartifactId>
<version>${mybatis.version}version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>${mysql.version}version>
dependency>
<dependency>
<groupId>com.github.pagehelpergroupId>
<artifactId>pagehelperartifactId>
<version>${pagehelper.version}version>
dependency>
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatis-springartifactId>
<version>${mybatis.spring.version}version>
dependency>
<dependency>
<groupId>org.apache.commonsgroupId>
<artifactId>commons-dbcp2artifactId>
<version>${commons.dbcp2.version}version>
dependency>
<dependency>
<groupId>org.apache.commonsgroupId>
<artifactId>commons-pool2artifactId>
<version>${commons.pool2.version}version>
dependency>
<dependency>
<groupId>org.apache.logging.log4jgroupId>
<artifactId>log4j-coreartifactId>
<version>${log4j2.version}version>
dependency>
<dependency>
<groupId>org.apache.logging.log4jgroupId>
<artifactId>log4j-apiartifactId>
<version>${log4j2.version}version>
dependency>
<dependency>
<groupId>org.apache.logging.log4jgroupId>
<artifactId>log4j-webartifactId>
<version>${log4j2.version}version>
dependency>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>${junit.version}version>
<scope>testscope>
dependency>
<dependency>
<groupId>javax.servletgroupId>
<artifactId>javax.servlet-apiartifactId>
<version>${servlet.version}version>
<scope>providedscope>
dependency>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
<version>${lombok.version}version>
<scope>providedscope>
dependency>
dependencies>
<build>
<finalName>ssmfinalName>
<resources>
<resource>
<directory>src/main/javadirectory>
<includes>
<include>**/*.xmlinclude>
includes>
resource>
<resource>
<directory>src/main/resourcesdirectory>
<includes>
<include>jdbc.propertiesinclude>
<include>*.xmlinclude>
includes>
resource>
resources>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.pluginsgroupId>
<artifactId>maven-compiler-pluginartifactId>
<version>${maven.compiler.plugin.version}version>
<configuration>
<source>${maven.compiler.source}source>
<target>${maven.compiler.target}target>
<encoding>${project.build.sourceEncoding}encoding>
configuration>
plugin>
<plugin>
<groupId>org.mybatis.generatorgroupId>
<artifactId>mybatis-generator-maven-pluginartifactId>
<version>1.3.2version>
<dependencies>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>${mysql.version}version>
dependency>
dependencies>
<configuration>
<overwrite>trueoverwrite>
configuration>
plugin>
<plugin>
<artifactId>maven-clean-pluginartifactId>
<version>3.1.0version>
plugin>
<plugin>
<artifactId>maven-resources-pluginartifactId>
<version>3.0.2version>
plugin>
<plugin>
<artifactId>maven-compiler-pluginartifactId>
<version>3.8.0version>
plugin>
<plugin>
<artifactId>maven-surefire-pluginartifactId>
<version>2.22.1version>
plugin>
<plugin>
<artifactId>maven-war-pluginartifactId>
<version>3.2.2version>
plugin>
<plugin>
<artifactId>maven-install-pluginartifactId>
<version>2.5.2version>
plugin>
<plugin>
<artifactId>maven-deploy-pluginartifactId>
<version>2.8.2version>
plugin>
plugins>
pluginManagement>
build>
project>
2、利用mybatis逆向工程生成模型层层代码**
省略~~~~~~~上一篇博客有写
3、编写配置文件
3.1 applicationContext.xml
spirng核心配置文件，引入文件
<beans xmlns="http://www.springframework.org/schema/beans"
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">
<import resource="applicationContext-mybatis.xml">import>
beans>
3.2applicationContext-mybatis.xml
<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:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
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/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">
<context:annotation-config/>
<context:component-scan base-package="com.hyf.ssm"/>
<context:property-placeholder location="classpath:jdbc.properties"/>
<bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<property name="initialSize" value="10"/>
<property name="maxTotal" value="100"/>
<property name="maxIdle" value="50"/>
<property name="minIdle" value="10"/>
<property name="maxWaitMillis" value="-1"/>
bean>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="mapperLocations" value="classpath*:com/hyf/ssm/**/mapper/*.xml"/>
<property name="plugins">
<array>
<bean class="com.github.pagehelper.PageInterceptor">
<property name="properties">
<value>
helperDialect=mysql
value>
property>
bean>
array>
property>
bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com/hyf/ssm/**/mapper"/>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
bean>
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
bean>
<tx:annotation-driven transaction-manager="transactionManager" />
<aop:aspectj-autoproxy/>
beans>
3.1注解式开发
@Repository：将DAO类声明为Bean
@Service：通常作用在业务层
@Constroller：通常作用在控制层，将在Spring MVC中使用
@Component：是一个泛化的概念，仅仅表示spring中的一个组件（Bean），可以作用在任何层次
@Scope：模式声明（singleton|prototype）
@Autowired：将自动在代码上下文与其匹配（默认是类型匹配）的Bean，并自动注入到相应的地方
@Resource：
1）@Resource后面没有任何内容，默认通过name属性去匹配bean，找不到再按type去匹配
2）指定了name或者type则根据指定的类型去匹配bean
3）指定了name和type则根据指定的name和type去匹配bean，任何一个不匹配都将报错
问题：@Autowired和@Resource两个注解的区别：
1）@Autowired默认按照byType方式进行bean匹配，@Resource默认按照byName方式进行bean匹配
2）@Autowired是Spring的注解，@Resource是J2EE的注解，这个看一下导入注解的时候这两个注解的包名就一清二楚了
Spring属于第三方的，J2EE是Java自己的东西，因此，建议使用@Resource注解，以减少代码和Spring之间的耦合。
@Transactional
3.3 jdbc.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/tb_student?useUnicode=true&characterEncoding=UTF-8
jdbc.username=root
jdbc.password=123
3.4 log4j2.xml
<Configuration status="WARN" monitorInterval="30">
<Properties>
<Property name="LOG_HOME">/root/workspace/lucenedemo/logsProperty>
<property name="ERROR_LOG_FILE_NAME">/root/workspace/lucenedemo/logs/errorproperty>
<property name="WARN_LOG_FILE_NAME">/root/workspace/lucenedemo/logs/warnproperty>
<property name="PATTERN">%d{yyyy-MM-dd HH:mm:ss.SSS} [%t-%L] %-5level %logger{36} - %msg%nproperty>
Properties>
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<ThresholdFilter level="trace" onMatch="ACCEPT"
onMismatch="DENY" />
<PatternLayout pattern="${PATTERN}" />
Console>
<File name="log" fileName="logs/test.log" append="false">
<PatternLayout
pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
File>
<RollingFile name="RollingFileInfo" fileName="${LOG_HOME}/info.log"
filePattern="${LOG_HOME}/$${date:yyyy-MM}/info-%d{yyyy-MM-dd}-%i.log">
<ThresholdFilter level="info" onMatch="ACCEPT"
onMismatch="DENY" />
<PatternLayout
pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
<Policies>
<TimeBasedTriggeringPolicy interval="1"
modulate="true" />
Policies>
RollingFile>
<RollingFile name="RollingFileWarn" fileName="${WARN_LOG_FILE_NAME}/warn.log"
filePattern="${WARN_LOG_FILE_NAME}/$${date:yyyy-MM}/warn-%d{yyyy-MM-dd}-%i.log">
<ThresholdFilter level="warn" onMatch="ACCEPT"
onMismatch="DENY" />
<PatternLayout
pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
<Policies>
<TimeBasedTriggeringPolicy />
<SizeBasedTriggeringPolicy size="2 kB" />
Policies>
<DefaultRolloverStrategy max="20" />
RollingFile>
<RollingFile name="RollingFileError" fileName="${ERROR_LOG_FILE_NAME}/error.log"
filePattern="${ERROR_LOG_FILE_NAME}/$${date:yyyy-MM}/error-%d{yyyy-MM-dd-HH-mm}-%i.log">
<ThresholdFilter level="error" onMatch="ACCEPT"
onMismatch="DENY" />
<PatternLayout
pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
<Policies>
<TimeBasedTriggeringPolicy interval="1"
modulate="true" />
Policies>
RollingFile>
Appenders>
<Loggers>
<logger name="org.springframework" level="INFO">logger>
<logger name="org.mybatis" level="INFO">logger>
<logger name="org.springframework" level="ERROR" />
<logger name="org.hibernate" level="ERROR" />
<logger name="org.apache.struts2" level="ERROR" />
<logger name="com.opensymphony.xwork2" level="ERROR" />
<logger name="org.jboss" level="ERROR" />
<root level="all">
<appender-ref ref="Console" />
<appender-ref ref="RollingFileInfo" />
<appender-ref ref="RollingFileWarn" />
<appender-ref ref="RollingFileError" />
root>
Loggers>
Configuration>
4、代码测试
实体类Model ——Book.java
set/get/toString 方法省略—
package com.hyf.ssm.model;
public class Book {
private Integer bid;
private String bname;
private Float price;
}
Mapper dao层——BookMapper.java
@Repository 将DAO类声明为Bean
package com.hyf.ssm.mapper;
import com.hyf.ssm.model.Book;
import org.springframework.stereotype.Repository;
import java.util.List;
import java.util.Map;
@Repository
public interface BookMapper {
// 通过Id进行删除
int deleteByPrimaryKey(Integer bid);
// 通过Id查询一条数据
Book selectByPrimaryKey(Integer bid);
}
BookMapper.xml
<?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.hyf.ssm.mapper.BookMapper" >
<resultMap id="BaseResultMap" type="com.hyf.ssm.model.Book" >
<constructor >
<idArg column="bid" jdbcType="INTEGER" javaType="java.lang.Integer" />
<arg column="bname" jdbcType="VARCHAR" javaType="java.lang.String" />
<arg column="price" jdbcType="REAL" javaType="java.lang.Float" />
</constructor>
</resultMap>
<sql id="Base_Column_List" >
bid, bname, price
</sql>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >
delete from t_mvc_book
where bid = #{bid,jdbcType=INTEGER}
</delete>
<select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" >
select
<include refid="Base_Column_List" />
from t_mvc_book
where bid = #{bid,jdbcType=INTEGER}
</select>
</mapper>
接口Server ——BookServer
package com.hyf.ssm.service;
import com.hyf.ssm.model.Book;
import com.hyf.ssm.utils.PageBean;
import java.util.List;
import java.util.Map;
/**
* @author xhy
* @site www.4399.com
* @company xxx公司
* @create 2019-11-17 11:48
*/
public interface BookService {
int deleteByPrimaryKey(Integer bid);
Book selectByPrimaryKey(Integer bid);
}
实现类——BookServerImpl.java
@Service 通常作用在业务层
@Autowired Autowired默认按照byType方式进行bean匹配，
package com.hyf.ssm.service.impl;
import com.hyf.ssm.mapper.BookMapper;
import com.hyf.ssm.model.Book;
import com.hyf.ssm.service.BookService;
import com.hyf.ssm.utils.PageBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
import java.util.Map;
/**
* @author xhy
* @site www.4399.com
* @company xxx公司
* @create 2019-11-17 11:49
*/
@Service
public class BookServiceImpl implements BookService {
@Autowired
private BookMapper bookMapper;
public BookMapper getBookMapper() {
return bookMapper;
}
public void setBookMapper(BookMapper bookMapper) {
this.bookMapper = bookMapper;
}
@Override
public int deleteByPrimaryKey(Integer bid) {
return this.bookMapper.deleteByPrimaryKey(bid);
}
@Override
public Book selectByPrimaryKey(Integer bid) {
return this.bookMapper.selectByPrimaryKey(bid);
}
}
Spring Test+junit完美组合
在工程的pom文件中增加spring-test的依赖
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-testartifactId>
<version>${spring.version}version>
dependency>
创建SpringBaseTest ，并在该类上加上两个注解
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={“classpath:applicationContext.xml”})
package com.hyf.ssm;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
/**
* @author xhy
* @site www.4399.com
* @company xxx公司
* @create 2019-11-17 12:06
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"classpath:applicationContext.xml"})
public class SpringBaseTest {
}
继承 SpringBaseTest ——BookServiceImplTest.java
如果不继承的话所用 就不能注解@Autowired
package com.hyf.ssm.service.impl;
import com.hyf.ssm.SpringBaseTest;
import com.hyf.ssm.service.BookService;
import com.hyf.ssm.utils.PageBean;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import java.util.HashMap;
import java.util.Map;
/**
* @author xhy
* @site www.4399.com
* @company xxx公司
* @create 2019-11-17 12:09
*/
public class BookServiceImplTest extends SpringBaseTest {
@Autowired
private BookService bookService;
@Test
public void deleteByPrimaryKey() {
this.bookService.deleteByPrimaryKey(55);
}
@Test
public void selectByPrimaryKey() {
System.out.println(this.bookService.selectByPrimaryKey(12));
}
}
查出来值，整合完毕
2、Aop整合pagehelper插件
pom 依赖
上方已导入
注意：记得开动态代理
使用AOP编程解决分页代码重复的问题
@Around(“execution(* *…*Service.*Pager(…))”)
public Object invoke(ProceedingJoinPoint args)
语法结构：execution(方法修饰符 方法返回值 方法所属类 匹配方法名 ( 方法中的形参表 ) 方法申明抛出的异常 )
“*” ：代表一个任意类型的参数；
“…”：代表零个或多个任意类型的参数。
切面的分页类
package com.hyf.ssm.aspect;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.hyf.ssm.utils.PageBean;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.stereotype.Component;
import java.util.List;
/**
* @author xhy
* @site www.4399.com
* @company xxx公司
* @create 2019-11-17 18:45
*/
@Component
@Aspect // 定义切面
public class PagerAspect {
@Around("execution(* *..*Service.*Pager(..))")
public Object invoke(ProceedingJoinPoint joinPoint) throws Throwable{
// 获取目标对象方法的参数集合
Object[] args = joinPoint.getArgs();
PageBean pageBean = null;
for (Object arg :args){
System.out.println(arg);
if(arg instanceof PageBean){
pageBean = (PageBean) arg;
break;
}
}
if(pageBean != null && pageBean.isPagination()){
PageHelper.startPage(pageBean.getPage(),pageBean.getRows());
}
Object proceed = joinPoint.proceed(args);
if(pageBean != null && pageBean.isPagination()){
PageInfo pageInfo = new PageInfo((List)proceed);
pageBean.setTotal(pageInfo.getTotal()+"");
}
return proceed;
}
}
Boojmapper
List<Map> listPage(Map map);
Boojmapper.xml
<!-- 分页 -->
<select id="listPage" resultType="java.util.Map" parameterType="java.util.Map">
select * from t_mvc_book
<where>
<if test="bname !=null and bname!=''" >
and bname like "%"#{bname}"%"
</if>
</where>
</select>
BookServer
List<Map> listPager(Map map, PageBean pageBean);
BookServerImpl
@Override
public List<Map> listPager(Map map, PageBean pageBean) {
return this.bookMapper.listPage(map);
}
BookServiceImplTest.java
@Test
public void listPage() {
Map m = new HashMap();
m.put("bname","圣墟");
PageBean pageBean = new PageBean();
pageBean.setPage(3);
for (Map map : this.bookService.listPager(m, pageBean)) {
System.out.println(map);
}
System.out.println("pageBean :"+pageBean);
}
控制台输出
