SpringBoot2.X (二十五)：SpringBoot整合 Mybatis + MySQL CURD 示例
阿新 • • 發佈：2018-12-16
話不多數，直接開始擼程式碼…
工程結構圖
開始之前先放張工程結構圖
1、maven 依賴：
<!-- Web 依賴--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- mybatis --> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.2</version> </dependency> <!-- 分頁外掛 --> <dependency> <groupId>com.github.pagehelper</groupId> <artifactId>pagehelper-spring-boot-starter</artifactId> <version>1.2.9</version> </dependency> <!-- druid 連線池 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.9</version> </dependency> <!-- lombok --> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> </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>
2、yml 配置檔案：
spring: application: name: mybatis-curd datasource: username: root password: root url: jdbc:mysql://localhost:3306/test?zeroDateTimeBehavior=convertToNull&useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC&autoReconnect=true continue-on-error: true sql-script-encoding: UTF-8 driver-class-name: com.mysql.jdbc.Driver type: com.alibaba.druid.pool.DruidDataSource druid: initial-size: 5 min-idle: 5 max-active: 20 max-wait: 60000 # 間隔多久進行一次檢測，檢測需要關閉的空閒連線 time-between-eviction-runs-millis: 60000 # 一個連線在池中最小生存的時間 min-evictable-idle-time-millis: 300000 validation-query: SELECT 1 FROM DUAL test-while-idle: true test-on-borrow: false test-on-return: false pool-prepared-statements: true max-pool-prepared-statement-per-connection-size: 20 connect-properties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000 use-global-data-source-stat: true filters: stat,wall,log4j2 mybatis: type-aliases-package: com.fxbin.mybaits.* configuration: map-underscore-to-camel-case: true # 列印sql, 方便除錯 log-impl: org.apache.ibatis.logging.stdout.StdOutImpl use-generated-keys: true default-statement-timeout: 60 default-fetch-size: 100
3、核心程式碼：
User.java
package com.fxbin.mybatis.bean; import lombok.Data; import java.util.Date; /** * created with IntelliJ IDEA. * author: fxbin * date: 2018/10/21 * time: 5:59 * version: 1.0 * description: */ @Data public class User { /** * 主鍵ID */ private Integer id; /** * 使用者名稱 */ private String username; /** * 密碼 */ private String password; /** * 建立時間 */ private Date gmtCreate; /** * 修改時間 */ private Date gmtModified; }
MyBatisConfig.java
package com.fxbin.mybatis.config;
import com.github.pagehelper.PageHelper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import java.util.Properties;
/**
* created with IntelliJ IDEA.
* author: fxbin
* date: 2018/10/21
* time: 11:33
* version: 1.0
* description: MyBatis 分頁外掛配置
*/
@Configuration
public class MyBatisConfig {
@Bean
public PageHelper pageHelper(){
PageHelper pageHelper = new PageHelper();
Properties p = new Properties();
// 設定為true時，會將RowBounds第一個引數offset當成pageNum頁碼使用
p.setProperty("offsetAsPageNum","true");
//設定為true時，使用RowBounds分頁會進行count查詢
p.setProperty("rowBoundsWithCount","true");
p.setProperty("reasonable","true");
pageHelper.setProperties(p);
return pageHelper;
}
}
UserController.java
package com.fxbin.mybatis.controller;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fxbin.mybatis.bean.User;
import com.fxbin.mybatis.service.UserService;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import javax.annotation.Resource;
/**
* created with IntelliJ IDEA.
* author: fxbin
* date: 2018/10/21
* time: 5:53
* version: 1.0
* description:
*/
@RestController
public class UserController {
@Resource
private UserService userService;
/**
* 查詢全部
* @param page
* @param size
* @return
*/
@RequestMapping("/listAll")
public Object listAll(@RequestParam(value = "page",defaultValue = "1")int page,
@RequestParam(value = "size",defaultValue = "10")int size){
return userService.listAll(page, size);
}
/**
* 新增資料
* @param user
* @return
*/
@RequestMapping("/insert")
public int insert (User user){
return userService.insert(user);
}
/**
* 刪除
* @param userId
* @return
*/
@RequestMapping("/remove")
public int remove(Integer userId){
return userService.remove(userId);
}
/**
* 修改
* @param user
* @return
*/
@RequestMapping("/update")
public int update(User user){
return userService.update(user);
}
}
UserService.java
package com.fxbin.mybatis.service;
import com.fxbin.mybatis.bean.User;
import java.util.List;
/**
* created with IntelliJ IDEA.
* author: fxbin
* date: 2018/10/21
* time: 5:54
* version: 1.0
* description:
*/
public interface UserService {
Object listAll(int page, int size);
int insert(User user);
int remove(Integer userId);
int update(User user);
}
UserServiceImpl.java
package com.fxbin.mybatis.service.impl;
import com.fxbin.mybatis.bean.User;
import com.fxbin.mybatis.mapper.UserMapper;
import com.fxbin.mybatis.service.UserService;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
import java.util.List;
/**
* created with IntelliJ IDEA.
* author: fxbin
* date: 2018/10/21
* time: 5:54
* version: 1.0
* description:
*/
@Service
public class UserServiceImpl implements UserService {
@Resource
private UserMapper userMapper;
@Override
public Object listAll(int page, int size) {
PageHelper.startPage(page, size);
List<User> userList = userMapper.listAll();
PageInfo<User> pageInfo = new PageInfo<>(userList);
return pageInfo;
}
@Override
public int insert(User user) {
return userMapper.insert(user);
}
@Override
public int remove(Integer userId) {
return userMapper.remove(userId);
}
@Override
public int update(User user) {
return userMapper.update(user);
}
}
UserMapper.java
package com.fxbin.mybatis.mapper;
import com.fxbin.mybatis.bean.User;
import org.apache.ibatis.annotations.*;
import java.util.List;
/**
* created with IntelliJ IDEA.
* author: fxbin
* date: 2018/10/21
* time: 5:55
* version: 1.0
* description:
*/
@Mapper
public interface UserMapper {
@Select({
"select * from user"
})
List<User> listAll();
@Insert({
"insert into user(`username`, `password`) values(#{username}, #{password})"
})
int insert(User user);
@Delete({
"delete from user where id = #{userId}"
})
int remove(Integer userId);
@Update({
"update user set username = #{username}, password = #{password} where id = #{id}"
})
int update(User user);
}
4、測試
1)、查詢
2）新增
檢視資料庫記錄，進一步驗證，確實已經新增了一條記錄
3）移除
檢視資料庫，id 為1 的記錄已經成功移除
4）修改
我們修改之前新增的id為13 的記錄，username 修改為 “修改”，password 修改為 “222”
檢視資料庫修改記錄，已成功
總結：
以上就是有關 SpringBoot2.X 整合 Mysql + Mybatis 的 CURD 的簡單案例，這裡我沒有對返回結果進行封裝，各位可根據自行需要，進行返回結果的封裝…
— end —
如有問題，請及時聯絡，謝謝