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spring Boot + Mybatis + MySql + 表映射文件生成器

分类: 文章 • 2024-10-21 22:08:34

工具：sts

Spring Boot Version：2.1.3.RELEASE

数据库：mysql

文件目录结构

spring Boot + Mybatis + MySql + 表映射文件生成器

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 http://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>2.1.3.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.wisely</groupId>
	<artifactId>ch8_2_2</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>ch8_2_2</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-data-jpa</artifactId>
		</dependency>
		
		<!-- <dependency>
			<groupId>com.google.guava</groupId>
			<artifactId>guava</artifactId>
			<version>18.0</version>
		</dependency> -->
		
		<!-- spring-boot整合mybatis -->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.0</version>
        </dependency>
	
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
		
        <!-- mysql驱动 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        
        <dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-core</artifactId>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-databind</artifactId>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.datatype</groupId>
			<artifactId>jackson-datatype-joda</artifactId>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.module</groupId>
			<artifactId>jackson-module-parameter-names</artifactId>
		</dependency>
		
		<!-- <dependency>
			<groupId>com.oracle</groupId>
			<artifactId>ojdbc6</artifactId>
			<version>11.2.0.2.0</version>
		</dependency> -->
		
		<dependency>
			<groupId>com.google.guava</groupId>
			<artifactId>guava</artifactId>
			<version>18.0</version>
		</dependency>
		
		<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-cache</artifactId>
        </dependency>
        
         <!-- 阿里巴巴连接池Druid -->
        <!-- <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.5</version>
        </dependency> -->
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
			
			<!-- mybatis generator 自动生成代码插件 -->
			<plugin>
				<groupId>org.mybatis.generator</groupId>
				<artifactId>mybatis-generator-maven-plugin</artifactId>
				<version>1.3.2</version>
				<configuration>
					<configurationFile>${basedir}/src/main/resources/generator/generatorConfig.xml</configurationFile>
					<overwrite>true</overwrite>
					<verbose>true</verbose>
				</configuration>
			</plugin>
		</plugins>
	</build>

</project>

建表脚本

CREATE TABLE `user` (
  `user_id` int(11) NOT NULL AUTO_INCREMENT,
  `user_name` varchar(255) NOT NULL,
  `password` varchar(255) NOT NULL,
  `phone` varchar(255) NOT NULL,
  PRIMARY KEY (`user_id`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;

application.properties

#server.port=80

#logging.level.org.springframework=DEBUG
#springboot   mybatis
#jiazai mybatis peizhiwenjian
mybatis.mapper-locations = classpath:mapping/*Mapper.xml
#mybatis.config-location = classpath:mapper/config/sqlMapConfig.xml
mybatis.type-aliases-package = com.wisely.model

#shujuyuan
#spring.datasource.driver-class-name= com.mysql.jdbc.Driver
spring.datasource.driver-class-name= com.mysql.cj.jdbc.Driver
spring.datasource.url = jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf-8&serverTimezone=UTC
spring.datasource.username = root
spring.datasource.password = root

#######################配置jpa#######################
#hibernate提供了根据实体类自动维护数据库表结构的功能，可通过spring.jpa.hibernate.ddl.auto来配置
#create:启动时删除上一次生成的表，并根据实体类生成表，表中数据会被清空
#create:drop:启动时根据实体类生成表，sessionFactory关闭时表会被删除
#update:启动时会根据实体类生成表，当实体类属性变动的时候，表结构也会更新，在初期开发阶段使用此选项
#validate:启动时验证实体类和数据表是否一致，在我们数据结构稳定时采用此选项
#none:不采取任何措施
spring.jpa.hibernate.ddl-auto=validate
#用来设置hibernate操作的时候在控制台显示其真实的sql语句
spring.jpa.show-sql=true
#让控制器输出的json字符串格式更美观
spring.jackson.serialization.indent-output=true

logging.level.org.springframework.data=DEBUG

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>
    <!-- 数据库驱动:选择你的本地硬盘上面的数据库驱动包-->
    <classPathEntry  location="E:\work\tools\mybatis\mysql-connector-java-5.1.34.jar"/>
    <context id="DB2Tables"  targetRuntime="MyBatis3">
        <commentGenerator>
            <property name="suppressDate" value="true"/>
            <!-- 是否去除自动生成的注释 true：是 ： false:否 -->
            <property name="suppressAllComments" value="true"/>
        </commentGenerator>
        <!--数据库链接URL，用户名、密码 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://127.0.0.1/test" userId="root" password="root">
        </jdbcConnection>
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false"/>
        </javaTypeResolver>
        <!-- 生成模型的包名和位置-->
        <javaModelGenerator targetPackage="com.wisely.model" targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
            <property name="trimStrings" value="true"/>
        </javaModelGenerator>
        <!-- 生成映射文件的包名和位置-->
        <sqlMapGenerator targetPackage="mapping" targetProject="src/main/resources">
            <property name="enableSubPackages" value="true"/>
        </sqlMapGenerator>
        <!-- 生成DAO的包名和位置-->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.wisely.mapper" targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
        </javaClientGenerator>
        <!-- 要生成的表 tableName是数据库中的表名或视图名 domainObjectName是实体类名-->
        <table tableName="user" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
        <table tableName="person" domainObjectName="Person" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
    </context>
</generatorConfiguration>

生成表映射文件：Run As -> Run Configurations

spring Boot + Mybatis + MySql + 表映射文件生成器

执行成功后在项目中即可看到表映射文件，目录如下：

spring Boot + Mybatis + MySql + 表映射文件生成器

另附上映射文件的扩展文件：

UserExtMapper.java

package com.wisely.mapper;

import java.util.List;

import com.wisely.model.User;

//@Mapper
public interface UserExtMapper extends UserMapper{
  //这个方式我自己加的
  List<User> selectAllUser();
}

UserMapper.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.wisely.mapper.UserExtMapper" >
  <!-- 这个方法是我自己加的 -->
  <select id="selectAllUser" resultMap="com.wisely.mapper.UserMapper.BaseResultMap">
    select
    <include refid="com.wisely.mapper.UserMapper.Base_Column_List" />
    from user
  </select>
</mapper>

编写服务类

UserService.java

package com.wisely.service;

import java.util.List;

import org.springframework.stereotype.Service;

import com.wisely.model.User;

/**
 * Created by Administrator on 2017/8/16.
 */
public interface UserService {

    int addUser(User user);

    List<User> findAllUser(int pageNum, int pageSize);
    
    List<User> selectAllUser();
    
    User selectById();
}

UserServiceImpl.java

package com.wisely.service.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.wisely.mapper.UserExtMapper;
import com.wisely.model.User;
import com.wisely.service.UserService;

/**
 * Created by Administrator on 2017/8/16.
 */
//@Service(value = "userService")
@Service
public class UserServiceImpl implements UserService {

    @Autowired
    private UserExtMapper userExtMapper;//这里会报错，但是并不会影响

    @Override
    public int addUser(User user) {

        return userExtMapper.insertSelective(user);
    }

    /*
    * 这个方法中用到了我们开头配置依赖的分页插件pagehelper
    * 很简单，只需要在service层传入参数，然后将参数传递给一个插件的一个静态方法即可；
    * pageNum 开始页数
    * pageSize 每页显示的数据条数
    * */
    @Override
    public List<User> findAllUser(int pageNum, int pageSize) {
        //将参数传给这个方法就可以实现物理分页了，非常简单。
//        PageHelper.startPage(pageNum, pageSize);
        return userExtMapper.selectAllUser();
    }
    
    @Override
    public List<User> selectAllUser(){
    	return userExtMapper.selectAllUser();
    }
    
    @Override
    public User selectById() {
    	return userExtMapper.selectByPrimaryKey(1);
    }
}

控制器

package com.wisely.controller;

import com.wisely.model.User;
import com.wisely.service.UserService;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

/**
 * Created by Administrator on 2017/8/16.
 */
@Controller
@RequestMapping(value = "/user")
public class UserController {

    @Autowired
    private UserService userService;

    @ResponseBody
    @RequestMapping(value = "/add", produces = {"application/json;charset=UTF-8"})
    public int addUser(User user){
        return userService.addUser(user);
    }

	@ResponseBody
    @RequestMapping(value = "/all/{pageNum}/{pageSize}", produces = {"application/json;charset=UTF-8"})
    public Object findAllUser(@PathVariable("pageNum") int pageNum, @PathVariable("pageSize") int pageSize){
		
        return userService.findAllUser(pageNum,pageSize);
    }
	
	@ResponseBody
    @RequestMapping(value = "/all", produces = {"application/json;charset=UTF-8"})
    public Object allUser(){
        return userService.selectAllUser();
    }
	
	@ResponseBody
    @RequestMapping(value = "/select/byId", produces = {"application/json;charset=UTF-8"})
    public Object selectById(){
        return userService.selectById();
    }
}

启动类

package com.wisely;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * spring boot 整合mybatis
 *
 */
@SpringBootApplication
@MapperScan("com.wisely.mapper")
public class Ch822Application {

	public static void main(String[] args) {
		SpringApplication.run(Ch822Application.class, args);
	}

}

ok，拷贝如上代码理论上可以无错误运行，如果有需要，可以下载我上传的工程文件，导入sts后也可直接运行

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