Springboot 整合 MyBatis(一):跑起来

0x1 环境

　　1. 系统:Windows 10

　　2. IDE:IntelliJ IDEA 2018.3 x64

0x2 创建项目

　　1.创建一个SpringBoot项目

　　　　选择Spring Initailizr >Next

　　　　简单配置即可>Next

　　　　选择项目所需依赖>Next

　　　　选择项目工作空间[随便写]:目录不存在会自动创建 > Next

　　　　创建好后,idea就会加载依赖包,并弹出提示,Meven项目需要导入依赖,选择自动导包

　　　　等待一会….当右下角没有进度条就说明好了

　　2. 创建项目结构

　　　　这三个文件可以删除

　　　　依次创建目录:controller层,domain层(entity),mapper层,query层,service层,创建好就是这样子……

注意:本文不使用application.properties文件而使用更加简洁的application.yml文件,可能你们已经注意到了项目中有四个 yml文件这是为什么?

　　因为现在一个项目有好多环境，开发环境，测试环境，准生产环境，生产环境，每个环境的参数不同，所以我们就可以把每个环境的参数配置到 yml文件中

　　在Spring Boot中多环境配置文件名需要满足application-{profile}.yml的格式，其中{profile}对应你的环境标识，比如：

　　　　application.yml：主文件
　　　　application-dev.yml：开发环境
　　　　application-test.yml：测试环境
　　　　application-prod.yml：生产环境

　　需要加载那个文件就在在 application.yml 文件中通过spring.profiles.active属性来设置，其值对应{profile}值。比如

　　创建数据库表

CREATE TABLE `user` (
  `id` BIGINT(32) NOT NULL AUTO_INCREMENT,
  `userName` varchar(32) NOT NULL,
  `passWord` varchar(50) NOT NULL,
  `realName` varchar(32) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;

　　3. 完善结构

①User.java　　　　　

 package xyz.bit1024.sunny.domain; /**
  * @ClassName User
  * @Date 2019-06-15 16:14
  * @Author xiaozhi
  * @Version 1.0.0
  * @Since JDK 1.8
  * @Description 实体类
  */
 public class User {
     private Long id;
     private String userName;
     private String passWord;
     private String realName;     public Long getId() {
         return id;
     }     public void setId(Long id) {
         this.id = id;
     }     public String getUserName() {
         return userName;
     }     public void setUserName(String userName) {
         this.userName = userName;
     }     public String getPassWord() {
         return passWord;
     }     public void setPassWord(String passWord) {
         this.passWord = passWord;
     }     public String getRealName() {
         return realName;
     }     public void setRealName(String realName) {
         this.realName = realName;
     }     @Override
     public String toString() {
         return "User{" +
                 "id=" + id +
                 ", userName='" + userName + '\'' +
                 ", passWord='" + passWord + '\'' +
                 ", realName='" + realName + '\'' +
                 '}';
     }
 }

笔者按:在实体类中覆写toString方法有助于查错—<阿里巴巴Java开发手册>

UserMapper.java

 package xyz.bit1024.sunny.mapper; import xyz.bit1024.sunny.domain.User; import java.util.List; /**
  * @ClassName UserMapper
  * @Date 2019-06-15 16:21
  * @Author xiaozhi
  * @Version 1.0.0
  * @Since JDK 1.8
  * @Description
  */
 public interface UserMapper {
     List<User> listAll();
 }

UserQuery.java 查询对象　　　

 package xyz.bit1024.sunny.query; /**
  * @ClassName UserQuery
  * @Date 2019-06-15 16:28
  * @Author xiaozhi
  * @Version 1.0.0
  * @Since JDK 1.8
  * @Description
  */
 public class UserQuery {
 }

IUserService.java:接口层,面向接口思想　　

 package xyz.bit1024.sunny.service; import xyz.bit1024.sunny.domain.User; import java.util.List; /**
  * @ClassName IUserService
  * @Date 2019-06-15 16:17
  * @Author xiaozhi
  * @Version 1.0.0
  * @Since JDK 1.8
  * @Description
  */
 public interface IUserService {     /**
      * 全部用户
      * @return List<User>
      */
     List<User> listAll();
 }

在service 层下创建 impl 目录,并在impl目录下面创建 IUserService 实现类并实现覆写父类方法

UserServiceImpl.java

 package xyz.bit1024.sunny.service.impl; import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import xyz.bit1024.sunny.domain.User;
 import xyz.bit1024.sunny.mapper.UserMapper;
 import xyz.bit1024.sunny.service.IUserService; import java.util.List; /**
  * @ClassName UserServiceImpl
  * @Date 2019-06-15 16:19
  * @Author xiaozhi
  * @Version 1.0.0
  * @Since JDK 1.8
  * @Description 实现类[业务类]
  */
 @Service
 public class UserServiceImpl implements IUserService {     @Autowired
     private UserMapper userMapper;     @Override
     public List<User> listAll() {
         return userMapper.listAll();
     }
 }

⑥ 在resources 创建mapper目录,并创建 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="xyz.bit1024.sunny.mapper.UserMapper">
     <resultMap id="BaseResultMap" type="xyz.bit1024.sunny.domain.User">
         <result column="id" jdbcType="BIGINT" property="id" />
         <result column="userName" jdbcType="VARCHAR" property="userName" />
         <result column="passWord" jdbcType="VARCHAR" property="passWord" />
         <result column="realName" jdbcType="VARCHAR" property="realName" />
     </resultMap>     <sql id="Base_Column_List">
         id, userName, passWord, realName
     </sql>
     <sql id="Base_Column_List_Value">
         #{id,jdbcType=Long},
         #{userName,jdbcType=VARCHAR},
         #{passWord,jdbcType=VARCHAR},
         #{realName,jdbcType=VARCHAR}
     </sql>
     <select id="listAll" resultMap="BaseResultMap">
         select <include refid="Base_Column_List"/> from t_user
     </select>
 </mapper>

UserController.java

 package xyz.bit1024.sunny.controller; import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 import xyz.bit1024.sunny.domain.User;
 import xyz.bit1024.sunny.service.IUserService; import java.util.List; /**
  * @ClassName UserController
  * @Date 2019-06-15 16:16
  * @Author xiaozhi
  * @Version 1.0.0
  * @Since JDK 1.8
  * @Description
  */
 @RestController
 @RequestMapping("/user")
 public class UserController {     //注入Service对象
     @Autowired
     private IUserService iUserService;     @RequestMapping("/listAll")
     public List<User> listAll(){
         return iUserService.listAll();
     }
 }

　　4 .完善配置

　　　　① 配置Mapper扫描包

　　　　application-dev.yml

　　　　logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <property name="LOG_HOME" value="./logs" />
    <property name="APP_NAME" value="bit1024" />
    <include resource="org/springframework/boot/logging/logback/defaults.xml" />
    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{35} - %msg %n</pattern>
            <charset>UTF-8</charset>
        </encoder>
    </appender>
    <appender name="infoFile" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>INFO</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
        <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
            <fileNamePattern>${LOG_HOME}/${APP_NAME}.info.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <maxFileSize>10MB</maxFileSize>
            <maxHistory>30</maxHistory>
            <totalSizeCap>6GB</totalSizeCap>
        </rollingPolicy>
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
            <charset>UTF-8</charset>
        </encoder>
    </appender>
    <appender name="warnFile" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>WARN</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
        <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
            <fileNamePattern>${LOG_HOME}/${APP_NAME}.warn.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <maxFileSize>10MB</maxFileSize>
            <maxHistory>30</maxHistory>
            <totalSizeCap>6GB</totalSizeCap>
        </rollingPolicy>
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
            <charset>UTF-8</charset>
        </encoder>
    </appender>
    <appender name="errorFile" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>ERROR</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
        <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
            <fileNamePattern>${LOG_HOME}/${APP_NAME}.error.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <maxFileSize>10MB</maxFileSize>
            <maxHistory>30</maxHistory>
            <totalSizeCap>6GB</totalSizeCap>
        </rollingPolicy>
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
            <charset>UTF-8</charset>
        </encoder>
    </appender>    <!--myibatis日志配置-->
    <logger name="xyz.bit1024.sunny.mapper" level="INFO"/>
    <logger name="xyz.bit1024" level="DEBUG"/>    <!-- 日志输出级别 -->
    <root level="INFO">
        <appender-ref ref="CONSOLE"></appender-ref>
        <appender-ref ref="infoFile"></appender-ref>
        <appender-ref ref="warnFile"></appender-ref>
        <appender-ref ref="errorFile"></appender-ref>
    </root>
</configuration>

　　构造测试数据

INSERT INTO `springboot`.`t_user` (`id`, `userName`, `passWord`, `realName`) VALUES ('10000001', 'admin', 'admin', '超级管理员');
INSERT INTO `springboot`.`t_user` (`id`, `userName`, `passWord`, `realName`) VALUES ('10000002', 'user1', '123', '用户1');
INSERT INTO `springboot`.`t_user` (`id`, `userName`, `passWord`, `realName`) VALUES ('10000003', 'user2', '123', '用户2');

　　一切完毕只待测试

　　　使用PostMan测试一波

　　成功,,完美

采坑:

　　java.sql.SQLException: The server time zone value ‘�й��׼ʱ��’ is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support.

修改配置文件:

url: jdbc:mysql://localhost:3306/springboot?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=UTC这次的集成就算完了,,有空把登录+shiro也集成

之前也没用过 GitHub :https://gist.github.com/bit1024-404/38f42bef407a7609e324eb00147ec5c1

转载请注明出处!

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