SpringBoot集成Mybatis Plus

Mybatis Plus是Mybatis的升级版本，提供一些默认的功能实现，只要按照其约定编写代码，就可以充分利用其特性。

SpringBoot集成Mybatis Plus步骤：

每个实体类定义一套Mybatis Plus接口与类

EntityBean,MapperInterface,IService,ServiceImpl

例如：

1、修改POM，添加Mybatis Plus依赖

<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/maven-v4_0_0.xsd"><modelVersion>4.0.0</modelVersion><!-- 定义公共资源版本 --><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>1.5.6.RELEASE</version><relativePath/></parent><groupId>com.test</groupId><artifactId>EC5_Proj</artifactId><packaging>war</packaging><version>0.0.1-SNAPSHOT</version><name>EC5_Proj Maven Webapp</name><url>http://maven.apache.org</url><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><!--JSP支持的依赖--><dependency><groupId>org.apache.tomcat.embed</groupId><artifactId>tomcat-embed-jasper</artifactId></dependency><dependency><groupId>javax.servlet</groupId><artifactId>jstl</artifactId></dependency><dependency><groupId>taglibs</groupId><artifactId>standard</artifactId><version>1.1.2</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-aop</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId></dependency><!--<dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>1.3.0</version></dependency>--><dependency><groupId>com.baomidou</groupId><artifactId>mybatisplus-spring-boot-starter</artifactId><version>1.0.5</version></dependency><dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus</artifactId><version>2.1.8</version></dependency><dependency><groupId>tk.mybatis</groupId><artifactId>mapper</artifactId><version>3.4.5</version></dependency><!-- 数据源依赖 --><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.1.6</version><exclusions><exclusion><groupId>com.alibaba</groupId><artifactId>jconsole</artifactId></exclusion><exclusion><groupId>com.alibaba</groupId><artifactId>tools</artifactId></exclusion></exclusions></dependency><!-- 数据库驱动依赖 --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId></dependency><!-- 分页插件 --><dependency><groupId>com.github.pagehelper</groupId><artifactId>pagehelper-spring-boot-starter</artifactId><version>1.1.2</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-freemarker</artifactId></dependency><dependency><groupId>org.springframework.data</groupId><artifactId>spring-data-solr</artifactId></dependency><dependency><groupId>commons-beanutils</groupId><artifactId>commons-beanutils-core</artifactId><version>1.8.3</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-devtools</artifactId><optional>true</optional><scope>true</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.12</version><scope>compile</scope></dependency><!--<dependency><groupId>com.test</groupId><artifactId>gfdev</artifactId><version>2.0</version><scope>system</scope><systemPath>${basedir}/src/lib/gfdev-2.0.jar</systemPath></dependency>--></dependencies><build><finalName>EC4_Proj</finalName><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><configuration><fork>true</fork></configuration></plugin></plugins></build>
</project>

2、修改application.properties配置文件

#SpringBoot服务端口配置
server.port=6060
server.context-path=/#spring.resources.static-locations=/css,/images,/img,/js#SpringMVC JSP目录配置
spring.mvc.view.prefix=/WEB-INF/jsp/
spring.mvc.view.suffix=.jsp#Http编码配置
spring.http.encoding.force=true
spring.http.encoding.charset=UTF-8
spring.http.encoding.enabled=true#Rabbitmq配置
spring.rabbitmq.host=192.168.25.1
spring.rabbitmq.port=5672
spring.rabbitmq.username=admin2
spring.rabbitmq.password=admin2
spring.rabbitmq.virtual-host=/spring.redis.database=0
spring.redis.host=localhost
spring.redis.port=6379
spring.redis.password=redis
spring.redis.pool.max-active=8
spring.redis.pool.max-wait=-1
spring.redis.pool.max-idle=8
spring.redis.pool.min-idle=0
spring.redis.timeout=0#数据源配置
spring.datasource.name=w1
spring.datasource.url=jdbc:mysql://localhost:3306/w1?useUnicode=true&characterEncoding=utf8
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.maxActive=20
spring.datasource.initialSize=1
spring.datasource.maxWait=60000
spring.datasource.minIdle=1#Mybatis实体类配置
#mybatis.mapper-locations=classpath:mapper/*.xml#Mybatis实体类配置
mybatis-plus.mapper-locations: classpath:mapper/*.xml#Solr配置
spring.data.solr.host=http://localhost:8984/solr/new_core#日志配置
logging.file=d:/springboot.log
logging.level.com.test.mapper=DEBUG
logging.level.com.test.servlet=DEBUG
logging.level.com.test.service.impl=DEBUG

3、定义实体类

package com.test.model;import java.io.Serializable;
import java.sql.Date;import com.baomidou.mybatisplus.annotations.TableField;
import com.baomidou.mybatisplus.annotations.TableId;
import com.baomidou.mybatisplus.annotations.TableName;
import com.baomidou.mybatisplus.enums.IdType;//实体类
@TableName("t_good")
public class GoodInfo implements Serializable{@TableId(type=IdType.AUTO)private Integer id = null;private Integer no = null;private String name = null;private String brand = null;private Integer tid = null;private Date dt = null;@TableField(exist=false)private String tname = null;private Integer imgId = null;public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public Integer getNo() {return id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getBrand() {return brand;}public void setBrand(String brand) {this.brand = brand;}public Integer getTid() {return tid;}public void setTid(Integer tid) {this.tid = tid;}public Date getDt() {return dt;}public void setDt(Date dt) {this.dt = dt;}public String getTname() {return tname;}public void setTname(String tname) {this.tname = tname;}public Integer getImgId() {return imgId;}public void setImgId(Integer imgId) {this.imgId = imgId;}}

package com.test.model;import java.io.Serializable;
import java.sql.Date;import com.baomidou.mybatisplus.annotations.TableId;
import com.baomidou.mybatisplus.annotations.TableName;//实体类
@TableName("t_type")
public class GoodTypeInfo implements Serializable{@TableIdprivate Integer id = null;private String name = null;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;}}

4、定义Mapper

package com.test.mapper;import java.util.List;import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;import com.baomidou.mybatisplus.mapper.BaseMapper;
import com.test.model.GoodInfo;
import com.test.model.GoodTypeInfo;@Mapper
public interface GoodMapper extends BaseMapper<GoodInfo>{public List<GoodInfo> findGood(@Param("name") String name);public GoodInfo findGoodById(@Param("id") Integer id);public List<GoodTypeInfo> findType();
}

5、定义服务接口

package com.test.service;import java.util.List;import org.apache.ibatis.annotations.Param;import com.baomidou.mybatisplus.service.IService;
import com.test.model.GoodInfo;
import com.test.model.GoodTypeInfo;public interface IGoodService extends IService<GoodInfo>{public List<GoodInfo> findGood(String name);public Boolean saveGood(GoodInfo gi);public Boolean updateGood(GoodInfo gi);public Boolean deleteGood(Integer id);public GoodInfo findGoodById(Integer id);public List<GoodTypeInfo> findType();
}

6、服务实现类

package com.test.service.impl;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;import com.baomidou.mybatisplus.service.impl.ServiceImpl;
import com.test.mapper.GoodMapper;
import com.test.model.GoodInfo;
import com.test.model.GoodTypeInfo;
import com.test.service.IGoodService;@Service
public class GoodServiceImpl extends ServiceImpl<GoodMapper,GoodInfo> implements IGoodService{@Autowiredprivate GoodMapper mapper;@Overridepublic Boolean saveGood(GoodInfo gi) {try{mapper.insert(gi);return true;}catch(Exception e){e.printStackTrace();}return false;}@Overridepublic Boolean updateGood(GoodInfo gi) {try{mapper.updateById(gi);return true;}catch(Exception e){e.printStackTrace();}return false;}@Overridepublic Boolean deleteGood(Integer id) {try{mapper.deleteById(id);return true;}catch(Exception e){e.printStackTrace();}return false;}@Overridepublic GoodInfo findGoodById(Integer id) {try{return mapper.findGoodById(id);}catch(Exception e){e.printStackTrace();}return null;}@Overridepublic List<GoodTypeInfo> findType() {try{return mapper.findType();}catch(Exception e){e.printStackTrace();}return null;}@Overridepublic List<GoodInfo> findGood(String name) {return mapper.findGood(name);}}

7.Controller层自定义查询

代码：https://pan.baidu.com/s/1eTNkOZtrgWA1aw8OXsxIBw

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