SpringBoot+通用Mapper+专用代码生成器 构建简单通用的java单体架构。
参考网站：https://github.com/abel533/Mapper
1、项目概况
项目结构图.jpg
技术选型.jpg
项目结构.jpg
2、项目结构
1632217494(1).png
3、pom.xml
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.13.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.geovis</groupId>
<artifactId>usercenter</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>usercenter</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- <dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.2.0</version>
</dependency>-->
<!--通用mapper依赖-->
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper-spring-boot-starter</artifactId>
<version>2.1.5</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.6</version>
<configuration>
<configurationFile>
${basedir}/src/main/resources/generator/generatorConfig.xml
</configurationFile>
<overwrite>true</overwrite>
<verbose>true</verbose>
</configuration>
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.19</version>
</dependency>
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper</artifactId>
<version>4.1.5</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</project>
4、专用代码生成器：根据数据库表生成 java实体类、mapper.xml、mapper接口等代码
config.properties
# 通用mapper的专用代码生成器配置
# 数据库连接信息
jdbc.driverClass=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://192.168.1.13:3306/user_center?characterEncoding=UTF8&serverTimezone=GMT%2B8&nullCatalogMeansCurrent=true
jdbc.user=root
jdbc.password=123456
# 表名
tableName=user
# 模块名称
moduleName=user
generatorConfig.xml
<!DOCTYPE generatorConfiguration
PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
<properties resource="generator/config.properties"/>
<context id="Mysql" targetRuntime="MyBatis3Simple" defaultModelType="flat">
<property name="beginningDelimiter" value="`"/>
<property name="endingDelimiter" value="`"/>
<plugin type="tk.mybatis.mapper.generator.MapperPlugin">
<property name="mappers" value="tk.mybatis.mapper.common.Mapper"/>
<property name="caseSensitive" value="true"/>
<!--暂不支持Lombok的Data、Builder等注解-->
<property name="lombok" value="Getter,Setter,ToString"/>
</plugin>
<!--数据库连接信息-->
<jdbcConnection driverClass="${jdbc.driverClass}"
connectionURL="${jdbc.url}"
userId="${jdbc.user}"
password="${jdbc.password}">
</jdbcConnection>
<!--生成的实体位置-->
<javaModelGenerator targetPackage="com.geovis.usercenter.domain.entity.${moduleName}"
targetProject="src/main/java"/>
<!--生成的mapper.xml位置-->
<sqlMapGenerator targetPackage="mapper.${moduleName}"
targetProject="src/main/resources"/>
<!--生成的mapper接口位置-->
<javaClientGenerator targetPackage="com.geovis.usercenter.dao.${moduleName}"
targetProject="src/main/java"
type="XMLMAPPER"/>
<!--为哪张表生成实体、mapper.xml、mapper接口等文件-->
<table tableName="${tableName}">
<generatedKey column="id" sqlStatement="JDBC"/>
</table>
</context>
</generatorConfiguration>
代码生成命令
mvn mybatis-generator:generate
代码微调：在实体类上添加lombok注解、在mapper接口上添加@Repository注解
User.java
package com.geovis.usercenter.domain.entity.user;
import java.util.Date;
import javax.persistence.*;
import lombok.*;
@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
@Table(name = "user")
public class User {
/**
* Id
*/
@Id
@GeneratedValue(generator = "JDBC")
private Integer id;
/**
* 微信id
*/
@Column(name = "wx_id")
private String wxId;
/**
* 微信昵称
*/
@Column(name = "wx_nickname")
private String wxNickname;
/**
* 角色
*/
private String roles;
/**
* 头像地址
*/
@Column(name = "avatar_url")
private String avatarUrl;
/**
* 创建时间
*/
@Column(name = "create_time")
private Date createTime;
/**
* 修改时间
*/
@Column(name = "update_time")
private Date updateTime;
/**
* 积分
*/
private Integer bonus;
}
UserMapper.java
package com.geovis.usercenter.dao.user;
import com.geovis.usercenter.domain.entity.user.User;
import org.springframework.stereotype.Repository;
import tk.mybatis.mapper.common.Mapper;
@Repository
public interface UserMapper extends Mapper<User> {
}
5、编写接口
application.properties
server.port=8080
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://192.168.1.13:3306/user_center?characterEncoding=UTF8&serverTimezone=GMT%2B8
spring.datasource.username=root
spring.datasource.password=123456
UserController.java
package com.geovis.usercenter.controller.user;
import com.geovis.usercenter.dao.user.UserMapper;
import com.geovis.usercenter.domain.entity.user.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.Date;
@RequestMapping("/user")
@RestController
public class UserController {
@Autowired
private UserMapper userMapper;
@GetMapping(value = "/insertUser")
public User insertUser(){
/*User user = new User();
user.setCreateTime(new Date());
user.setUpdateTime(new Date());
user.setWxNickname("xxx");*/
User user = User.builder()
.createTime(new Date())
.updateTime(new Date())
.wxNickname("xxx")
.build();
userMapper.insertSelective(user);
return user;
}
}
6、接口测试
1632218204(1).png
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