1.之前用的maven管理项目,现在公司用gradle,所以自己学习创建一个,特此记录一下(前提是你得配置了gradle)

1.首先是build.gradle文件

buildscript {
    ext {
        springBootVersion = '2.1.2.RELEASE'
    }
    repositories {
        maven {
            url 'http://maven.aliyun.com/nexus/content/groups/public/'
        }
        mavenCentral()
        mavenLocal()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
    }
}

apply plugin: 'java'
apply plugin: 'org.springframework.boot'
apply plugin: 'io.spring.dependency-management'

group = 'com.inspur'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '1.8'

repositories {
    maven {
        url 'http://maven.aliyun.com/nexus/content/groups/public/'
    }
    maven {
        url = 'http://repo.inspur.com/artifactory/ecbu-gradle-release-local'
        credentials {
            username 'bss'
            password 'USTdYtIj'
        }
    }
    mavenCentral()
    mavenLocal()
}

dependencies {

    compile('org.springframework.boot:spring-boot-starter-web')
    compile('org.mybatis.spring.boot:mybatis-spring-boot-starter:1.3.2')
    compile('org.projectlombok:lombok:1.18.2')
    runtime('mysql:mysql-connector-java')
    compile('mysql:mysql-connector-java')

    testCompile('org.springframework.boot:spring-boot-starter-test')
    compile('com.alibaba:fastjson:1.2.5')
    compile('com.github.pagehelper:pagehelper:5.1.2')

    implementation 'org.springframework.boot:spring-boot-starter-freemarker'
    implementation 'org.springframework.boot:spring-boot-starter-web'
    implementation 'org.mybatis.spring.boot:mybatis-spring-boot-starter:1.3.2'
    testImplementation 'org.springframework.boot:spring-boot-starter-test'
}

2. 创建数据库表

CREATE TABLE `student` (
  `id` int(11) NOT NULL,
  `name` varchar(255) DEFAULT NULL,
  `age` int(11) DEFAULT NULL,
  `score` varchar(255) DEFAULT NULL,
  `class1` varchar(255) DEFAULT NULL,
  `school` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

-- ----------------------------
-- Records of student
-- ----------------------------
INSERT INTO `student` VALUES ('1', '熊大', '20', '100', '动物系', '北京大学');
INSERT INTO `student` VALUES ('2', '熊二', '21', '90', '动物系', '南京大学');
INSERT INTO `student` VALUES ('3', '光头强', '18', '100', '伐木系', '复旦大学');

3.创建项目结构

Controller

package com.inspur.demo.controller;

import com.inspur.demo.entity.Student;
import com.inspur.demo.service.StudentService;
import com.inspur.demo.vo.ResponseBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping("/student")
public class StudentController {
    @Autowired
    private StudentService studentService;

    @GetMapping(value = "/all")
    public List<Student> getall(){
        return studentService.findAll();
    }

}

Service

package com.inspur.demo.service;

import com.inspur.demo.entity.Student;
import com.inspur.demo.mapper.StudentMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class StudentService {
    @Autowired
    private StudentMapper studentMapper;

    public List<Student> findAll() {
        return studentMapper.queryAll();
    }

}

Mapper

package com.inspur.demo.mapper;

import com.inspur.demo.entity.Student;
import org.apache.ibatis.annotations.Select;

import java.util.List;

public interface StudentMapper {
    List<Student> queryAll();

}

Entity

package com.inspur.demo.entity;

import lombok.Data;

@Data
public class Student {
    private Integer id;
    private String name;
    private Integer age;
    private Integer score;
    private String class1;
    private String school;

    public Student(){}
    public Student(Integer id,String name,Integer age,Integer score,String class1,String school){
        this.id=id;
        this.name=name;
        this.age=age;
        this.score=score;
        this.class1=class1;
        this.school=school;
    }

}

4.resources目录下添加mybatis的配置文件(文件名是  mybatis-config.xml)

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

    <settings>
        <setting name="callSettersOnNulls" value="true"/>
        <setting name="logImpl" value="STDOUT_LOGGING"/>
        <setting name="cacheEnabled" value="false"/>
        <setting name="mapUnderscoreToCamelCase" value="true"/>
    </settings>
</configuration> 

日志配置文件( 文件名是 logback-spring.xml)

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <include resource="org/springframework/boot/logging/logback/base.xml" />
    <appender name="LOG_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <Prudent>true</Prudent>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>log/logFile.%d{yyyy-MM-dd}.log</fileNamePattern>

            <maxHistory>30</maxHistory>
            <totalSizeCap>1GB</totalSizeCap>

        </rollingPolicy>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <Pattern> %d{yyyy-MM-dd HH:mm:ss} -%msg%n</Pattern>
        </layout>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level --- [%15thread{15}] %-40logger{40} : %msg%n</pattern>
        </encoder>
    </appender>

    <logger name="org" level="INFO"/>
    <logger name="sun" level="INFO"/>
    <logger name="com.inspur" level="INFO" />
    <root level="INFO">
        <appender-ref ref="LOG_FILE" />
        <!--<appender-ref ref="FILE" />-->
    </root>
</configuration>

5.添加mapper.xml文件(名字是  StudentMapper.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.inspur.demo.mapper.StudentMapper">

    <select id="queryAll" resultType="com.inspur.demo.entity.Student">
        select * from student
    </select>
</mapper>

6.添加application.yml文件

server:
  port: 8081
spring:
  application:
    name: demo
  datasource:
    url: jdbc:mysql://localhost:3306/test?characterEncoding=utf8&serverTimezone=UTC
    driver-class-name: com.mysql.cj.jdbc.Driver
    username: root
    password: root
  jackson:
    date-format: yyyy-MM-dd HH:mm:ss
    time-zone: GMT+8

mybatis:
    mapper-locations: classpath:mapper/**/*.xml
    config-location: classpath:mybatis-config.xml

6.项目启动类

7.启动测试

8.大功告成