springboot 整合mybatisPlus
阿新 • • 發佈：2019-01-02
今天整理下自己在整合springboot + mybatisPlus 中遇到的一些小挫折。
專案整體結構圖：（請注意：我這裡使用的MYSQL 版本為8）
專案整體依賴的pom 檔案：
<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>4.0.0</modelVersion> <parent> <groupId>com.zzg</groupId> <artifactId>springboot</artifactId> <version>0.0.1-SNAPSHOT</version> </parent> <artifactId>springboot-mybatisplus</artifactId> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <!--引入swagger --> <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger2</artifactId> <version>2.2.2</version> </dependency> <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger-ui</artifactId> <version>2.2.2</version> </dependency> <!--整合mybatis --> <!-- 與資料庫操作相關的依賴 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency> <!-- 使用資料來源 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.6</version> </dependency> <!-- mysql --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.11</version> </dependency> <!-- mybatisplus整合 --> <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> <!-- mybatisplus 程式碼生成器 --> <!-- 模板引擎 --> <dependency> <groupId>org.apache.velocity</groupId> <artifactId>velocity-engine-core</artifactId> <version>2.0</version> </dependency> <!-- 模板引擎，需要指定 mpg.setTemplateEngine(new FreemarkerTemplateEngine()); --> <dependency> <groupId>org.freemarker</groupId> <artifactId>freemarker</artifactId> <version>2.3.23</version> </dependency> </dependencies> </project>
第一步：整合mybatisplus 核心框架pom.xml
注意： mybatis-plus 自動的維護了mybatis以及mybatis-spring的依賴，在springboot中這三者不能同時的出現，避免版本的衝突，表示：跳進過這個坑。。。<!--整合mybatis --> <!-- 與資料庫操作相關的依賴 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency> <!-- mybatisplus整合 --> <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>
第二步：整合mybatisplus 程式碼生成器
<!-- mybatisplus 程式碼生成器 --> <!-- 模板引擎 --> <dependency> <groupId>org.apache.velocity</groupId> <artifactId>velocity-engine-core</artifactId> <version>2.0</version> </dependency> <!-- 模板引擎，需要指定 mpg.setTemplateEngine(new FreemarkerTemplateEngine()); --> <dependency> <groupId>org.freemarker</groupId> <artifactId>freemarker</artifactId> <version>2.3.23</version> </dependency>
編寫mybatisplus 自動生成器MybatisPlusGenerator.java(基於單列模式進行建立)
package com.zzg.springboot.auto;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.config.DataSourceConfig;
import com.baomidou.mybatisplus.generator.config.GlobalConfig;
import com.baomidou.mybatisplus.generator.config.PackageConfig;
import com.baomidou.mybatisplus.generator.config.StrategyConfig;
import com.baomidou.mybatisplus.generator.config.rules.DbType;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
public class MybatisPlusGenerator {
private static MybatisPlusGenerator single = null;
private MybatisPlusGenerator() {
super();
}
private static MybatisPlusGenerator getSingle() {
if(single == null) {
single =new MybatisPlusGenerator();
}
return single;
}
public void autoGeneration() {
GlobalConfig config = new GlobalConfig();
String dbUrl = "jdbc:mysql://localhost:3306/test?serverTimezone=GMT%2B8";
DataSourceConfig dataSourceConfig = new DataSourceConfig();
dataSourceConfig.setDbType(DbType.MYSQL)
.setUrl(dbUrl)
.setUsername("root")
.setPassword("123456")
.setDriverName("com.mysql.cj.jdbc.Driver");
StrategyConfig strategyConfig = new StrategyConfig();
strategyConfig
.setCapitalMode(true)
.setEntityLombokModel(false)
.setDbColumnUnderline(true)
.setNaming(NamingStrategy.underline_to_camel);
config.setActiveRecord(false)
.setEnableCache(false)
.setAuthor("zzg")
//指定輸出資料夾位置
.setOutputDir("E:\\workspace\\springboot\\springboot-mybatisplus\\src\\main\\java")
.setFileOverride(true)
.setServiceName("%sService");
new AutoGenerator().setGlobalConfig(config)
.setDataSource(dataSourceConfig)
.setStrategy(strategyConfig)
.setPackageInfo(
new PackageConfig()
.setParent("com.zzg.springboot")
.setController("controller")
.setEntity("entity")
).execute();
}
public static void main(String[] args) {
// TODO Auto-generated method stub
MybatisPlusGenerator generator = MybatisPlusGenerator.getSingle();
generator.autoGeneration();
}
}第三步：配置application.properties
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/test?serverTimezone=GMT%2B8
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.initialSize=5
spring.datasource.minIdle=5
spring.datasource.maxActive=20
spring.datasource.maxWait=60000
spring.datasource.timeBetweenEvictionRunsMillis=60000
spring.datasource.minEvictableIdleTimeMillis=300000
spring.datasource.validationQuery=SELECT 1 FROM DUAL
spring.datasource.testWhileIdle=true
spring.datasource.testOnBorrow=false
spring.datasource.testOnReturn=false
spring.datasource.poolPreparedStatements=true
spring.datasource.maxPoolPreparedStatementPerConnectionSize=20
spring.datasource.filters=stat,wall,log4j
spring.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
mybatis-plus.mapper-locations=classpath:/mapper/*Mapper.xml
mybatis-plus.typeAliasesPackage=com.zzg.springboot.entity第四步：專案的配置資訊
package com.zzg.springboot.config;
import javax.sql.DataSource;
import org.mybatis.spring.annotation.MapperScan;
import org.mybatis.spring.mapper.MapperScannerConfigurer;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import com.alibaba.druid.pool.DruidDataSource;
import com.baomidou.mybatisplus.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.plugins.PerformanceInterceptor;
@Configuration
//掃描dao或者是Mapper介面
@MapperScan("com.zzg.springboot.mapper*")
public class MybatisPlusConfig {
/***
* plus 的效能優化
* @return
*/
@Bean
public PerformanceInterceptor performanceInterceptor() {
PerformanceInterceptor performanceInterceptor = new PerformanceInterceptor();
/*<!-- SQL 執行效能分析，開發環境使用，線上不推薦。 maxTime 指的是 sql 最大執行時長 -->*/
performanceInterceptor.setMaxTime(1000);
/*<!--SQL是否格式化 預設false-->*/
performanceInterceptor.setFormat(true);
return performanceInterceptor;
}
/**
* @Description : mybatis-plus分頁外掛
*/
@Bean
public PaginationInterceptor paginationInterceptor() {
return new PaginationInterceptor();
}
// 配置資料來源
@Bean(name="dataSource")
@ConfigurationProperties(prefix="spring.datasource")
public DataSource dataSource(){
return new DruidDataSource();
}
// 配置事物管理器
@Bean(name="transactionManager")
public DataSourceTransactionManager transactionManager(){
return new DataSourceTransactionManager(dataSource());
}
}第五步：啟動springbootApplication
package com.zzg.springboot;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SpringBootMybatisPlus {
public static void main(String[] args) {
// TODO Auto-generated method stub
SpringApplication.run(SpringBootMybatisPlus.class, args);
System.out.println("============= SpringBoot web Start Success =============");
}
}專案關聯的entity層、dao層、service層、controller層和*Mapper.xml檔案
package com.zzg.springboot.entity;
import com.baomidou.mybatisplus.enums.IdType;
import com.baomidou.mybatisplus.annotations.TableId;
import java.io.Serializable;
/**
* <p>
* 學員表
* </p>
*
* @author zzg123
* @since 2018-07-15
*/
public class TStudent implements Serializable {
private static final long serialVersionUID = 1L;
@TableId(value = "sid", type = IdType.AUTO)
private Integer sid;
private String sname;
private String sex;
public Integer getSid() {
return sid;
}
public void setSid(Integer sid) {
this.sid = sid;
}
public String getSname() {
return sname;
}
public void setSname(String sname) {
this.sname = sname;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
@Override
public String toString() {
return "TStudent{" +
", sid=" + sid +
", sname=" + sname +
", sex=" + sex +
"}";
}
}
package com.zzg.springboot.mapper;
import java.util.Map;
import com.baomidou.mybatisplus.mapper.BaseMapper;
import com.zzg.springboot.entity.TStudent;
/**
* <p>
* 學員表 Mapper 介面
* </p>
*
* @author zzg123
* @since 2018-07-15
*/
public interface TStudentMapper extends BaseMapper<TStudent> {
/**
*
* @Title: selectUserByMap
* @Description: 多條件組合查詢使用者
* @param userId
* @return
* @throws Exception
*/
TStudent selectUserByMap(Map<String, Object> parameterMap) throws Exception;
}
package com.zzg.springboot.service;
import java.util.Map;
import com.baomidou.mybatisplus.service.IService;
import com.zzg.springboot.entity.TStudent;
/**
* <p>
* 學員表 服務類
* </p>
*
* @author zzg123
* @since 2018-07-15
*/
public interface TStudentService extends IService<TStudent> {
/**
*
* @Title: selectUserByMap
* @Description: 多條件組合查詢使用者
* @param userId
* @return
* @throws Exception
*/
TStudent selectUserByMap(Map<String, Object> parameterMap) throws Exception;
}
package com.zzg.springboot.service.impl;
import java.util.HashMap;
import java.util.Map;
import javax.annotation.Resource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.baomidou.mybatisplus.service.impl.ServiceImpl;
import com.zzg.springboot.entity.TStudent;
import com.zzg.springboot.mapper.TStudentMapper;
import com.zzg.springboot.service.TStudentService;
/**
* <p>
* 學員表 服務實現類
* </p>
*
* @author zzg123
* @since 2018-07-15
*/
@Service
public class TStudentServiceImpl extends ServiceImpl<TStudentMapper, TStudent> implements TStudentService {
/**
* 使用者資料訪問介面
*/
@Resource
private TStudentMapper tstudentMapper;
@Override
public TStudent selectUserByMap(Map<String, Object> parameterMap) throws Exception {
// TODO Auto-generated method stub
return tstudentMapper.selectUserByMap(parameterMap);
}
}
package com.zzg.springboot.controller;
import java.util.HashMap;
import java.util.Map;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import com.zzg.springboot.entity.TStudent;
import com.zzg.springboot.service.TStudentService;
/**
* <p>
* 學員表 前端控制器
* </p>
*
* @author zzg123
* @since 2018-07-15
*/
@Controller
@RequestMapping("/tStudent")
public class TStudentController {
@Resource
private TStudentService service;
@RequestMapping("/get")
@ResponseBody
public TStudent get(HttpServletRequest request, Model model) throws Exception {
Map<String, Object> map = new HashMap<String, Object>();
map.put("sid", 1);
TStudent student = this.service.selectUserByMap(map);
return student;
}
}建庫指令碼：
CREATE TABLE `t_student` (
`sid` INT(11) NOT NULL AUTO_INCREMENT,
`sname` VARCHAR(255) NULL DEFAULT '0',
`sex` CHAR(2) NULL DEFAULT '0',
PRIMARY KEY (`sid`)
)
COMMENT='學員表'
COLLATE='utf8mb4_0900_ai_ci'
ENGINE=InnoDB