mybatis与spring集成
首先我们来导入一些依赖
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)
<?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"> <parent> <artifactId>redis</artifactId> <groupId>com.jt</groupId> <version>1.0-SNAPSHOT</version> </parent> <modelVersion>4.0.0</modelVersion> <artifactId>ssm</artifactId> <packaging>war</packaging> <name>ssm Maven Webapp</name> <!-- FIXME change it to the project's website --> <url>http://www.example.com</url> <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> <maven.compiler.plugin.version>3.7.0</maven.compiler.plugin.version> <!--添加jar包依赖--> <!--1.spring 5.0.2.RELEASE相关--> <spring.version>5.0.2.RELEASE</spring.version> <!--2.mybatis相关--> <mybatis.version>3.4.5</mybatis.version> <!--mysql--> <mysql.version>5.1.44</mysql.version> <!--pagehelper分页jar依赖--> <pagehelper.version>5.1.2</pagehelper.version> <!--mybatis与spring集成jar依赖--> <mybatis.spring.version>1.3.1</mybatis.spring.version> <!--3.dbcp2连接池相关 druid--> <commons.dbcp2.version>2.1.1</commons.dbcp2.version> <commons.pool2.version>2.4.3</commons.pool2.version> <!--4.log日志相关--> <log4j2.version>2.9.1</log4j2.version> <!--5.其他--> <junit.version>4.12</junit.version> <servlet.version>4.0.0</servlet.version> <lombok.version>1.18.2</lombok.version> </properties> <dependencies> <!--1.spring相关--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-orm</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> <!--2.mybatis相关--> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> <!--mysql--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.version}</version> </dependency> <!--pagehelper分页插件jar包依赖--> <dependency> <groupId>com.github.pagehelper</groupId> <artifactId>pagehelper</artifactId> <version>${pagehelper.version}</version> </dependency> <!--mybatis与spring集成jar包依赖--> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>${mybatis.spring.version}</version> </dependency> <!--3.dbcp2连接池相关--> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-dbcp2</artifactId> <version>${commons.dbcp2.version}</version> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-pool2</artifactId> <version>${commons.pool2.version}</version> </dependency> <!--4.log日志相关依赖--> <!--核心log4j2jar包--> <dependency> <groupId>org.apache.logging.log4j</groupId> <artifactId>log4j-core</artifactId> <version>${log4j2.version}</version> </dependency> <dependency> <groupId>org.apache.logging.log4j</groupId> <artifactId>log4j-api</artifactId> <version>${log4j2.version}</version> </dependency> <!--web工程需要包含log4j-web，非web工程不需要--> <dependency> <groupId>org.apache.logging.log4j</groupId> <artifactId>log4j-web</artifactId> <version>${log4j2.version}</version> </dependency> <!--5.其他--> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>${junit.version}</version> <scope>test</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>${servlet.version}</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>${lombok.version}</version> <scope>provided</scope> </dependency> </dependencies> <build> <finalName>ssm</finalName> <resources> <!--解决mybatis-generator-maven-plugin运行时没有将XxxMapper.xml文件放入target文件夹的问题--> <resource> <directory>src/main/java</directory> <includes> <include>**/*.xml</include> </includes> </resource> <!--解决mybatis-generator-maven-plugin运行时没有将jdbc.properites文件放入target文件夹的问题--> <resource> <directory>src/main/resources</directory> <includes> <include>jdbc.properties</include> <include>*.xml</include> </includes> </resource> </resources> <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) --> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <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.generator</groupId> <artifactId>mybatis-generator-maven-plugin</artifactId> <version>1.3.2</version> <dependencies> <!--使用Mybatis-generator插件不能使用太高版本的mysql驱动 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.version}</version> </dependency> </dependencies> <configuration> <overwrite>true</overwrite> </configuration> </plugin> <plugin> <artifactId>maven-clean-plugin</artifactId> <version>3.1.0</version> </plugin> <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --> <plugin> <artifactId>maven-resources-plugin</artifactId> <version>3.0.2</version> </plugin> <plugin> <artifactId>maven-compiler-plugin</artifactId> <version>3.8.0</version> </plugin> <plugin> <artifactId>maven-surefire-plugin</artifactId> <version>2.22.1</version> </plugin> <plugin> <artifactId>maven-war-plugin</artifactId> <version>3.2.2</version> </plugin> <plugin> <artifactId>maven-install-plugin</artifactId> <version>2.5.2</version> </plugin> <plugin> <artifactId>maven-deploy-plugin</artifactId> <version>2.8.2</version> </plugin> </plugins> </pluginManagement> </build> </project>
2、利用mybatis逆向工程生成模型层层代码
generatorConfig.xml
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd" > <generatorConfiguration> <!-- 引入配置文件 --> <properties resource="jdbc.properties"/> <!--指定数据库jdbc驱动jar包的位置--> <classPathEntry location="D:\repository\mvn-repository\mysql\mysql-connector-java\5.1.44\mysql-connector-java-5.1.44.jar"/> <!-- 一个数据库一个context --> <context id="infoGuardian"> <!-- 注释 --> <commentGenerator> <property name="suppressAllComments" value="true"/><!-- 是否取消注释 --> <property name="suppressDate" value="true"/> <!-- 是否生成注释代时间戳 --> </commentGenerator> <!-- jdbc连接 --> <jdbcConnection driverClass="${jdbc.driver}" connectionURL="${jdbc.url}" userId="${jdbc.username}" password="${jdbc.password}"/> <!-- 类型转换 --> <javaTypeResolver> <!-- 是否使用bigDecimal， false可自动转化以下类型（Long, Integer, Short, etc.） --> <property name="forceBigDecimals" value="false"/> </javaTypeResolver> <!-- 01 指定javaBean生成的位置 --> <!-- targetPackage：指定生成的model生成所在的包名 --> <!-- targetProject：指定在该项目下所在的路径 --> <javaModelGenerator targetPackage="com.jt.model" targetProject="src/main/java"> <!-- 是否允许子包，即targetPackage.schemaName.tableName --> <property name="enableSubPackages" value="false"/> <!-- 是否对model添加构造函数 --> <property name="constructorBased" value="true"/> <!-- 是否针对string类型的字段在set的时候进行trim调用 --> <property name="trimStrings" value="false"/> <!-- 建立的Model对象是否 不可改变 即生成的Model对象不会有 setter方法，只有构造方法 --> <property name="immutable" value="false"/> </javaModelGenerator> <!-- 02 指定sql映射文件生成的位置 --> <sqlMapGenerator targetPackage="com.jt.mapper" targetProject="src/main/java"> <!-- 是否允许子包，即targetPackage.schemaName.tableName --> <property name="enableSubPackages" value="false"/> </sqlMapGenerator> <!-- 03 生成XxxMapper接口 --> <!-- type="ANNOTATEDMAPPER",生成Java Model 和基于注解的Mapper对象 --> <!-- type="MIXEDMAPPER",生成基于注解的Java Model 和相应的Mapper对象 --> <!-- type="XMLMAPPER",生成SQLMap XML文件和独立的Mapper接口 --> <javaClientGenerator targetPackage="com.jt.mapper" targetProject="src/main/java" type="XMLMAPPER"> <!-- 是否在当前路径下新加一层schema,false路径com.oop.eksp.user.model， true:com.oop.eksp.user.model.[schemaName] --> <property name="enableSubPackages" value="false"/> </javaClientGenerator> <!-- 配置表信息 --> <!-- schema即为数据库名 --> <!-- tableName为对应的数据库表 --> <!-- domainObjectName是要生成的实体类 --> <!-- enable*ByExample是否生成 example类 --> <!--<table schema="" tableName="t_book" domainObjectName="Book"--> <!--enableCountByExample="false" enableDeleteByExample="false"--> <!--enableSelectByExample="false" enableUpdateByExample="false">--> <!--<!– 忽略列，不生成bean 字段 –>--> <!--<!– <ignoreColumn column="FRED" /> –>--> <!--<!– 指定列的java数据类型 –>--> <!--<!– <columnOverride column="LONG_VARCHAR_FIELD" jdbcType="VARCHAR" /> –>--> <!--</table>--> <table schema="" tableName="t_mvc_book" domainObjectName="Book" enableCountByExample="false" enableDeleteByExample="false" enableSelectByExample="false" enableUpdateByExample="false"> <!-- 忽略列，不生成bean 字段 --> <!-- <ignoreColumn column="FRED" /> --> <!-- 指定列的java数据类型 --> <!-- <columnOverride column="LONG_VARCHAR_FIELD" jdbcType="VARCHAR" /> --> </table> </context> </generatorConfiguration>
3、编写配置文件applicationContext-mybatis.xml
注解式开发
<?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: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"> <!--1. 注解式开发 --> <!-- 注解驱动 --> <context:annotation-config/> <!-- 用注解方式注入bean，并指定查找范围：com.javaxl.ssm及子子孙孙包--> <context:component-scan base-package="com.jt"/> <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}"/> <!--初始连接数--> <property name="initialSize" value="10"/> <!--最大活动连接数--> <property name="maxTotal" value="100"/> <!--最大空闲连接数--> <property name="maxIdle" value="50"/> <!--最小空闲连接数--> <property name="minIdle" value="10"/> <!--设置为-1时，如果没有可用连接，连接池会一直无限期等待，直到获取到连接为止。--> <!--如果设置为N（毫秒），则连接池会等待N毫秒，等待不到，则抛出异常--> <property name="maxWaitMillis" value="-1"/> </bean> <!--4. spring和MyBatis整合 --> <!--1) 创建sqlSessionFactory--> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 指定数据源 --> <property name="dataSource" ref="dataSource"/> <!-- 自动扫描XxxMapping.xml文件，**任意路径 --> <property name="mapperLocations" value="classpath*:com/jt/**/mapper/*.xml"/> <!-- 指定别名 --> <property name="typeAliasesPackage" value="com/jt/**/model"/> <!--配置pagehelper插件--> <property name="plugins"> <array> <bean class="com.github.pagehelper.PageInterceptor"> <property name="properties"> <value> helperDialect=mysql </value> </property> </bean> </array> </property> </bean> <!--2) 自动扫描com/javaxl/ssm/**/mapper下的所有XxxMapper接口(其实就是DAO接口)，并实现这些接口，--> <!-- 即可直接在程序中使用dao接口，不用再获取sqlsession对象--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!--basePackage 属性是映射器接口文件的包路径。--> <!--你可以使用分号或逗号 作为分隔符设置多于一个的包路径--> <property name="basePackage" value="com/jt/**/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>
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" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <!--整合mybatis--> <import resource="applicationContext-mybatis.xml"></import> </beans>
4、Spring Test+junit完美组合
相关代码
Service层
package com.jt.service; import com.jt.model.Book; import com.jt.util.PageBean; import java.util.List; import java.util.Map; public interface BookService { int deleteByPrimaryKey(Integer bid); int insert(Book record); int insertSelective(Book record); Book selectByPrimaryKey(Integer bid); int updateByPrimaryKeySelective(Book record); int updateByPrimaryKey(Book record); List<Map> aaaa(Map map, PageBean pageBean); List<Map> listPager(Map map, PageBean pageBean); }
BookServiceImpl
package com.jt.service.impl; import com.jt.mapper.BookMapper; import com.jt.model.Book; import com.jt.service.BookService; import com.jt.util.PageBean; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; import java.util.Map; @Service public class BookServiceImpl implements BookService { @Autowired private BookMapper bookMapper; @Override public int deleteByPrimaryKey(Integer bid) { return bookMapper.deleteByPrimaryKey(bid); } @Override public int insert(Book record) { return bookMapper.insert(record); } @Override public int insertSelective(Book record) { return bookMapper.insertSelective(record); } @Override public Book selectByPrimaryKey(Integer bid) { return bookMapper.selectByPrimaryKey(bid); } @Override public int updateByPrimaryKeySelective(Book record) { return bookMapper.updateByPrimaryKeySelective(record); } @Override public int updateByPrimaryKey(Book record) { return bookMapper.updateByPrimaryKey(record); } @Override public List<Map> aaaa(Map map, PageBean pageBean) { return bookMapper.aaaa(map); } @Override public List<Map> listPager(Map map, PageBean pageBean) { return bookMapper.aaaa(map); } }
SpringBaseTest
@RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations={"classpath:applicationContext.xml"}) public class SpringBaseTest { protected Book book; protected PageBean pageBean; @Before public void init(){ book=new Book(); pageBean=new PageBean(); } }
BookServiceImplTest
package com.jt.service.impl; import com.jt.SpringBaseTest; import com.jt.model.Book; import com.jt.service.BookService; import com.jt.util.StringUtils; import org.apache.ibatis.reflection.SystemMetaObject; import org.junit.Test; import org.springframework.beans.factory.annotation.Autowired; import java.util.HashMap; import java.util.List; import java.util.Map; import static org.junit.Assert.*; public class BookServiceImplTest extends SpringBaseTest { @Autowired private BookService bookService; @Test public void insert() { book.setBid(3); book.setBname("jt"); book.setPrice(93f); this.bookService.insert(book); } @Test public void aaaa() { Map map=new HashMap(); map.put("bname", StringUtils.toLikeStr("圣墟")); List<Map> aaaa= this.bookService.aaaa(map, pageBean); for (Map m: aaaa){ System.out.println(m); } } @Test public void listPager() { Map map=new HashMap(); map.put("bname", StringUtils.toLikeStr("圣墟")); // pageBean.setPage(3;) List<Map> aaaa= this.bookService.listPager(map, pageBean); for (Map m: aaaa){ System.out.println(m); } } }
5.修改分页代码：
使用AOP编程解决分页代码重复的问题
注1：AOP注解式开发详情见资料“Spring如何实现AOP环绕通知.mht”
注2：AOP分页实现“PageBeanAspect.java”
@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。
PagerAspect
package com.jt; import com.github.pagehelper.PageHelper; import com.github.pagehelper.PageInfo; import com.jt.util.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; @Component @Aspect public class PagerAspect { @Around("execution(* *..*Service.*Pager(..))") public Object invoke(ProceedingJoinPoint args)throws Throwable{ Object[] params=args.getArgs(); PageBean pageBean=null; for (Object param:params){ if(param instanceof PageBean){ pageBean=(PageBean)param; break; } } if(pageBean!=null&&pageBean.isPagination()){ PageHelper.startPage(pageBean.getPage(),pageBean.getRows()); } Object list = args.proceed(params); if(pageBean!=null&&pageBean.isPagination()){ PageInfo pageInfo=new PageInfo((List) list); pageBean.setTotal(pageBean.getTotal()+""); } return list; } }
博客就到这里了
