springboot2.0集成mybatis1.3.2以及配置generater代码生成(附源码)

项目源码以及sql:

链接：https://pan.baidu.com/s/1tbZcHZIK6GI236aDJIssiA 密码：4ybd

环境/版本一览：

开发工具：Intellij IDEA 2018.1.6

springboot: 2.0.3

jdk：1.8

maven:3.5

alibaba Druid 数据库连接池：1.1.9

PageHelper 分页插件

mybatis generator 自动生成代码插件

---

新建一个springboot demo项目。

附上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>

    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <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>
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>1.3.2</version>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-jdbc</artifactId>
            </dependency>
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
            </dependency>
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid-spring-boot-starter</artifactId>
                <version>1.1.9</version>
            </dependency>
            <dependency>
                <groupId>org.apache.commons</groupId>
                <artifactId>commons-lang3</artifactId>
                <version>3.4</version>
            </dependency>
        <!--<dependency>-->
            <!--<groupId>org.springframework.boot</groupId>-->
            <!--<artifactId>spring-boot-starter-thymeleaf</artifactId>-->
        <!--</dependency>-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
        </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>1.3.5</version>
                <dependencies>
                    <dependency>
                        <groupId> mysql</groupId>
                        <artifactId> mysql-connector-java</artifactId>
                        <version> 5.1.39</version>
                    </dependency>
                    <dependency>
                        <groupId>org.mybatis.generator</groupId>
                        <artifactId>mybatis-generator-core</artifactId>
                        <version>1.3.5</version>
                    </dependency>
                </dependencies>
                <executions>
                    <execution>
                        <id>Generate MyBatis Artifacts</id>
                        <phase>package</phase>
                        <goals>
                            <goal>generate</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <!--允许移动生成的文件 -->
                    <verbose>true</verbose>
                    <!-- 是否覆盖 -->
                    <overwrite>true</overwrite>
                    <!-- 自动生成的配置 -->
                    <configurationFile>
                        src/main/resources/mybatis-generator.xml</configurationFile>
                </configuration>
            </plugin>
        </plugins>
    </build>


</project>

---

新建package：

---

默认的配置文件为application.pro..，删除后新建

application.yml:

  spring:
      datasource:
          name: mysql_test
          type: com.alibaba.druid.pool.DruidDataSource
          #druid相关配置
          druid:
            #监控统计拦截的filters
            filters: stat
            driver-class-name: com.mysql.jdbc.Driver
            #基本属性
            url: jdbc:mysql://127.0.0.1:3306/mytest?useUnicode=true&characterEncoding=UTF-8&allowMultiQueries=true
            username: root
            password: root
            #配置初始化大小/最小/最大
            initial-size: 1
            min-idle: 1
            max-active: 20
            #获取连接等待超时时间
            max-wait: 60000
            #间隔多久进行一次检测，检测需要关闭的空闲连接
            time-between-eviction-runs-millis: 60000
            #一个连接在池中最小生存的时间
            min-evictable-idle-time-millis: 300000
            validation-query: SELECT 'x'
            test-while-idle: true
            test-on-borrow: false
            test-on-return: false
            #打开PSCache，并指定每个连接上PSCache的大小。oracle设为true，mysql设为false。分库分表较多推荐设置为false
            pool-prepared-statements: false
            max-pool-prepared-statement-per-connection-size: 20

mybatis:
  mapper-locations: classpath:mapper/*.xml
  type-aliases-package: com.example.demo.model

#pagehelper
pagehelper:
    helperDialect: mysql
    reasonable: true
    supportMethodsArguments: true
    params: count=countSql
    returnPageInfo: check

---

新建mysql数据库表结构：

---

---

逆向工程generater

需要的依赖已在上图pom.xml中贴出：

在resoures下新建mybatis-generater.xml，名字可以自定义，根据自己数据库以及项目结构修改，：

<?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jar
    <classPathEntry location="E:\mysql-connector-java-5.1.7-bin.jar" />
    -->

    <context id="DB2Tables" targetRuntime="MyBatis3">
        <!--去除注释  -->
        <commentGenerator>
            <property name="suppressAllComments" value="true" />
        </commentGenerator>

        <!--数据库连接 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://localhost:3306/mytest"
                        userId="root"
                        password="root">
        </jdbcConnection>
        <!--默认false
           Java type resolver will always use java.math.BigDecimal if the database column is of type DECIMAL or NUMERIC.
         -->
        <javaTypeResolver >
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!--生成实体类 指定包名 以及生成的地址 （可以自定义地址，但是路径不存在不会自动创建  使用Maven生成在target目录下，会自动创建） -->
        <javaModelGenerator targetPackage="com.example.demo.model" targetProject="src/main/java">
            <property name="enableSubPackages" value="true" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>
        <!--生成SQLMAP文件 -->
        <sqlMapGenerator targetPackage="mapper"  targetProject="src/main/resources">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>
        <!--生成Dao文件 可以配置 type="XMLMAPPER"生成xml的dao实现  context id="DB2Tables" 修改targetRuntime="MyBatis3"  -->
        <javaClientGenerator  targetPackage="com.example.demo.dao"  targetProject="src/main/java" type="XMLMAPPER">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>

        <!--对应数据库表 mysql可以加入主键自增 字段命名 忽略某字段等-->
        <table tableName="kd_user" domainObjectName="User"
               enableCountByExample="false" enableSelectByExample="false" enableUpdateByExample="false" enableDeleteByExample="false">
        </table>

    </context>
</generatorConfiguration>

点击ieda上方点击run—-》EditConfigurations

若没有如图的maven,点击+号。

配置如上图，OK.

右击项目工程名—》maven-Reimport–》运行

运行即可。

---

生成的Mapper.java

我去掉了几个不用的方法
加上@Mapper注解用于service能够扫描。若不加的话需要在启动类配置

@MapperScan(“com.example.demo.dao”)

package com.example.demo.dao;

import com.example.demo.model.User;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface UserMapper {
    int deleteByPrimaryKey(String id);

    int insert(User record);

    User selectByPrimaryKey(String id);

    int updateByPrimaryKey(User record);
}

service

package com.example.demo.service;

import com.example.demo.model.User;

public interface UserService {

    int deleteByPrimaryKey(String id);

    int insert(User record);

    User selectByPrimaryKey(String id);

    int updateByPrimaryKey(User record);
}

---

serviceImpl

package com.example.demo.service.impl;

import com.example.demo.dao.UserMapper;
import com.example.demo.model.User;
import com.example.demo.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

//@Service("userService")
@Service
public class UserServiceImpl implements UserService{

    @Autowired
    private UserMapper userMapper;

    @Override
    public int deleteByPrimaryKey(String id) {
        return userMapper.deleteByPrimaryKey(id);
    }

    @Override
    public int insert(User record) {
        return userMapper.insert(record);
    }


    @Override
    public User selectByPrimaryKey(String id) {
        return userMapper.selectByPrimaryKey(id);
    }

    @Override
    public int updateByPrimaryKey(User record) {
        return userMapper.updateByPrimaryKey(record);
    }
}

新建controller

import com.example.demo.model.User;
import com.example.demo.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class IndexController {

    @Autowired
    private UserService userService;
       @RequestMapping(value = "/")
      public User index(){
           User user =  userService.selectByPrimaryKey("1");
           System.out.print(user);
           return user;
      }

}

---

启动类：

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class DemoApplication {

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

若mapper.java文件不加@Mapper注解。

@SpringBootApplication
@MapperScan("com.example.demo.dao")
public class DemoApplication {

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

项目结构：

启动项目，启动成功后，访问 localhost:8080

项目源码以及sql文件：

链接：https://pan.baidu.com/s/1tbZcHZIK6GI236aDJIssiA 密码：4ybd