以服務(jeecg-cloud-system)呼叫服務(jeecg-cloud-test)為例講解feign呼叫說明

1 jeecg-demo中編寫服務介面

(1)編寫介面

public interface TestService {
    Result<String> getMessage(String name);
}

(2)編寫實現類

@Service
public class TestServiceImpl implements TestService {
    @Override
    public Result<String> getMessage(String name) {
        
 
return Result.OK("hello "+name);
    }
}

(3)編寫服務介面

@Slf4j
@Api(tags = "test")
@RestController
@RequestMapping("/test")
public class TestController {
    @Resource
    private TestService testService;

    @GetMapping(value = "/demo")
    @ApiOperation(value = "測試方法", notes = "測試方法")
    public Result methodTest() {

        
 
return Result.OK("這是測試方法TestController");
    }



    @GetMapping("/getMessage")
    public Result<String> getMessage(@RequestParam String name) {
        return testService.getMessage(name);
    }

}

2 jeecg-system中編寫feign客戶端

(1)啟動類 加上@EnableFeignClients註解。

(2)編寫feign客戶端

//value = "jeecg-cloud-test"中填寫被呼叫服務的名稱

@FeignClient(value = "jeecg-cloud-test")
@Component
public interface JeecgCloudTestFeign {

    @GetMapping(value = "/test/getMessage") // 注意(/test/getMessage為jeecg-cloud-test服務提供方中TestController中的方法對應的訪問路徑
    Result<String> getMessage(@RequestParam("name") String name);

}

(3)編寫測試方法

@RestController
@RequestMapping("/test1")
public class JeecgCloudFeignTestController {
    //注入feign客戶端
    @Autowired
    private JeecgCloudTestFeign jeecgCloudTestFeign;

    @GetMapping("/getMessage3")
    public Result<String> getMessage() {
        return jeecgCloudTestFeign.getMessage("jeecg-cloud-test");
    }
}

(4)postman測試

注意：如果postman訪問不同，考慮在nacos配置檔案中shiro中放開路徑(新增/test1/**)

參考文獻：

http://doc.jeecg.com/2046526