转载请标明出处： http://blog.csdn.net/forezp/article/details/70768477 本文出自方志朋的博客
本文主要讲解如何在springboot下整合mybatis，并访问数据库。由于mybatis这个框架太过于流行，所以我就不讲解了。
引入依赖
在pom文件引入mybatis-spring-boot-starter的依赖：
org
.mybatis.spring.boot
mybatis-spring-boot-starter
1.3.0
引入数据库连接依赖：
mysql
mysql-connector-java
runtime
com.alibaba
druid
1.0.29
引入数据源
application.properties配置文件中引入数据源：
spring
.datasource.url=jdbc:mysql://localhost:
3306/test
spring
.datasource.username=root
spring
.datasource.password=
123456
spring
.datasource.driver-class-name=
com.mysql.jdbc.Driver
这样，springboot就可以访问数据了。
创建数据库表
建表语句：
#
DROP TABLE `account` IF EXISTS
CREATE TABLE `account` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(20) NOT NULL,
`money` double DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;
INSERT INTO `account` VALUES ('1', 'aaa', '1000');
INSERT INTO `account` VALUES ('2', 'bbb', '1000');
INSERT INTO `account` VALUES ('3', 'ccc', '1000');
具体实现
这篇文篇通过注解的形式实现。
创建实体：
“` public class Account { private int id ; private String name ; private double money;
setter… getter… }
“`
dao层
@Mapper
public interface AccountMapper {
@Insert(
"insert into account(name, money) values(#{name}, #{money})")
int add(
@Param(
"name") String name,
@Param(
"money")
double money);
@Update(
"update account set name = #{name}, money = #{money} where id = #{id}")
int update(
@Param(
"name") String name,
@Param(
"money")
double money,
@Param(
"id")
int id);
@Delete(
"delete from account where id = #{id}")
int delete(
int id);
@Select(
"select id, name as name, money as money from account where id = #{id}")
Account findAccount(
@Param(
"id")
int id);
@Select(
"select id, name as name, money as money from account")
List findAccountList();
}
service层
@Service
public class AccountService {
@Autowired
private AccountMapper accountMapper;
public int add(String name,
double money) {
return accountMapper.add(name, money);
}
public int update(String name,
double money,
int id) {
return accountMapper.update(name, money, id);
}
public int delete(
int id) {
return accountMapper.delete(id);
}
public Account
findAccount(
int id) {
return accountMapper.findAccount(id);
}
public List
findAccountList() {
return accountMapper.findAccountList();
}
}
controller层，构建restful API
package com.forezp.web;
import com.forezp.entity.Account;
import com.forezp.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import java.util.List;
/**
* Created by fangzhipeng on 2017/4/20.
*/
@RestController
@RequestMapping(
"/account")
public class AccountController {
@Autowired
AccountService accountService;
@RequestMapping(value =
"/list", method = RequestMethod.GET)
public List
getAccounts() {
return accountService.findAccountList();
}
@RequestMapping(value =
"/{id}", method = RequestMethod.GET)
public Account
getAccountById(@
PathVariable("id")
int id) {
return accountService.findAccount(id);
}
@RequestMapping(value =
"/{id}", method = RequestMethod.PUT)
public String
updateAccount(@
PathVariable("id")
int id, @
RequestParam(value =
"name", required =
true) String name,
@RequestParam(value =
"money", required =
true)
double money) {
int t= accountService.update(name,money,id);
if(t==
1) {
return "success";
}
else {
return "fail";
}
}
@RequestMapping(value =
"/{id}", method = RequestMethod.DELETE)
public String
delete(@
PathVariable(value =
"id")
int id) {
int t= accountService.delete(id);
if(t==
1) {
return "success";
}
else {
return "fail";
}
}
@RequestMapping(value =
"", method = RequestMethod.POST)
public String
postAccount(@
RequestParam(value =
"name") String name,
@RequestParam(value =
"money")
double money) {
int t= accountService.add(name,money);
if(t==
1) {
return "success";
}
else {
return "fail";
}
}
}
通过postman测试通过。
源码下载：https://github.com/forezp/SpringBootLearning
参考资料
mybatis
MyBatis整合
