# 创建测试数据库和表结构
```mysql
CREATE DATABASE `provider` CHARACTER SET 'utf8' COLLATE 'utf8_bin';
USE `provider`;
CREATE TABLE `provider` (
`id` int(11) NOT NULL AUTO_INCREMENT COMMENT '主键ID',
`name` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL COMMENT '名称',
PRIMARY KEY (`id`) USING BTREE
);
INSERT INTO `provider`.`provider`(`id`, `name`) VALUES (1, 'provider-test');
```
# 配置pom文件
```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">
<parent>
<artifactId>cloudframe</artifactId>
<groupId>com.gosuncn</groupId>
<version>1.0</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>sys-provider</artifactId>
<dependencies>
<dependency>
<groupId>com.gosuncn</groupId>
<artifactId>common</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.1.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>com/gosuncn/dao/*.xml</include>
</includes>
</resource>
</resources>
</build>
</project>
```
# 创建主启动类
```java
@SpringBootApplication
public class ProviderApplication {
public static void main(String[] args) {
SpringApplication.run(ProviderApplication.class, args);
}
}
```
# 创建配置文件
```yaml
server:
port: 8003
spring:
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql:///provider?serverTimezone=UTC
username: root
password: root
application:
name: provider
mybatis:
mapper-locations: classpath*:/com/gosuncn/dao/*.xml
```
# 创建实体类
```java
package com.gosuncn.entity;
@Data
public class Provider {
private Integer id;
private String name;
}
```
# 创建ProviderMapper
```java
package com.gosuncn.dao;
@Mapper
public interface ProviderMapper {
List<Provider> findAll();
int createProvider(Provider provider);
}
```
# 创建ProviderMapper.xml
```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.gosuncn.dao.ProviderMapper">
<select id="findAll" resultType="com.gosuncn.entity.Provider">
SELECT `id`, `name` FROM `provider`
</select>
<insert id="createProvider" parameterType="com.gosuncn.entity.Provider">
INSERT INTO `provider`(`name`) VALUES (#{name})
</insert>
</mapper>
```
# 创建ProviderService
```java
package com.gosuncn.service;
@Service
public class ProviderService {
@Autowired
private ProviderMapper providerMapper;
public Optional<List<Provider>> findAll() {
return Optional.ofNullable(providerMapper.findAll());
}
@Transactional
public int createProvider(Provider provider) {
return providerMapper.createProvider(provider);
}
}
```
# 创建ProviderController
```java
package com.gosuncn.controller;
@RestController
public class ProviderController {
@Autowired
private ProviderService providerService;
@GetMapping("/")
public CommonResult findAll() {
return new CommonResult<>(HttpStatus.OK.value(), HttpStatus.OK.getReasonPhrase(), providerService.findAll().orElse(null));
}
@GetMapping("/provider")
public CommonResult createProvider() {
Provider provider = new Provider();
provider.setName("Hi Girl.");
return new CommonResult<>(HttpStatus.OK.value(), HttpStatus.OK.getReasonPhrase(), providerService.createProvider(provider));
}
}
```
