Java——RestTemplate发送POST请求之formData形式

import com.alibaba.fastjson.JSON;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.client.RestTemplate;
import java.util.*; 

    /**
     * RestTemplate发送POST请求之formData形式
     * @return
     */
    public static Map<String, String> formData(){
        String url = "http://192.168.1.85:8089/getToken";
        RestTemplate restTemplate = new RestTemplate();
        HttpHeaders headers = new HttpHeaders();
        MultiValueMap<String, Object> map = new LinkedMultiValueMap<>();
        //接口参数
        map.add("username","xiaoming");
        map.add("password","123456");
        //头部类型
        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
        //构造实体对象
        HttpEntity<MultiValueMap<String, Object>> param = new HttpEntity<>(map, headers);
        //发起请求,服务地址，请求参数，返回消息体的数据类型
        ResponseEntity<String> response = restTemplate.postForEntity(url, param, String.class);
        //body
        String body = response.getBody();
        System.out.println(body);
        //JSON格式转为Map类型
        Map result = JSON.parseObject(body, Map.class);
        System.out.println(result);
        return result;
    }