RestTemplate的使用-蒲公英云

RestTemplate的使用

男娘i 2022-12-05 15:19 224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;