# 添加依赖
```xml
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
```
完整版
```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-consumer</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>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>com/gosuncn/dao/*.xml</include>
</includes>
</resource>
</resources>
</build>
</project>
```
# 修改主启动类
```java
package com.gosuncn;
@EnableFeignClients // 启动FeignClients
@EnableDiscoveryClient
@SpringBootApplication
public class ConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(ConsumerApplication.class, args);
}
}
```
# 创建ProviderClient
```java
package com.gosuncn.feign;
@FeignClient(value = "provider")
public interface ProviderClient {
@GetMapping("/provider")
CommonResult createProvider();
}
```
# 创建ProviderService
```java
package com.gosuncn.service;
@Service
public class ProviderService {
@Autowired
private ProviderClient providerClient;
@Autowired
private ConsumerMapper consumerMapper;
public void feignTest() {
providerClient.createProvider();
Consumer consumer = new Consumer();
consumer.setName("Hi feignTest.");
consumerMapper.createConsumer(consumer);
}
}
```
# 修改ConsumerController
```java
package com.gosuncn.controller;
@RestController
public class ConsumerController {
@Autowired
private ConsumerService consumerService;
@Autowired
private ProviderService providerService;
@GetMapping("/")
public CommonResult findAll() {
return new CommonResult<>(HttpStatus.OK.value(), HttpStatus.OK.getReasonPhrase(), consumerService.findAll().orElse(null));
}
@GetMapping("/consumer")
public CommonResult createConsumer() {
Consumer consumer = new Consumer();
consumer.setName("Hi Boy.");
return new CommonResult<>(HttpStatus.OK.value(), HttpStatus.OK.getReasonPhrase(), consumerService.createConsumer(consumer));
}
@GetMapping("/feign")
public void feignTest() {
providerService.feignTest();
}
}
```
