RestTemplate的使用

男娘i 2022-12-05 15:19 129阅读 0赞

## RestTemplate，用于调用远程服务 ##

## 导入依赖： ##

RestTemplate是spring的一个rest客户端，在spring-web这个包下，spring boot的依赖

<dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>

## 在controller里面注入： ##

@Autowired
        private RestTemplate restTemplate;

## 具体代码实现demo： ##

@PostMapping("sdqj/djk")
        public ResponseResult confirm_alarm(@RequestBody confirm_alrmVO vo) { 
            Map<String, Object> param = new HashMap();
            //使用String.join方法截取传过来的字符串数组，用“，”分隔
            String ids = String.join(",", vo.getObj_ids());
            System.out.println(ids);
            param.put("obj_ids", ids);
            param.put("scfl", vo.getScfl().toString());
            //设置请求头类型
            HttpHeaders httpHeaders = new HttpHeaders();
            httpHeaders.setContentType(MediaType.APPLICATION_JSON);
            //传参数,请求体和请求头放在requestEntity
            HttpEntity<Map> requestEntity = new HttpEntity<>(param,httpHeaders);
            //post请求，调用远程
            JSONObject jsonObject = restTemplate.postForObject(
                    "http://localhost:31230/sdqj/online_monitor/confirm_alarm", requestEntity, JSONObject.class);
            return ResponseResult.success();
        }

## 引入的包： ##

import java.util.HashMap;
    import java.util.Map;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.http.HttpEntity;
    import org.springframework.http.HttpHeaders;
    import org.springframework.http.MediaType;
    import org.springframework.web.bind.annotation.PostMapping;
    import org.springframework.web.bind.annotation.RequestBody;
    import org.springframework.web.bind.annotation.RestController;
    import org.springframework.web.client.RestTemplate;
    
    import com.alibaba.fastjson.JSONObject;
    import com.whayer.sdqj.monitorMom.domain.ResponseResult;
    import com.whayer.sdqj.monitorMom.vo.confirm_alrmVO;

## 只是自己简单的总结！！！！ ##