如何在restTemplate中以应用程序的形式发送正文/x-www-form-urlencoded

import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.client.RestTemplate;

public class RestTemplateExample {
    public static void main(String[] args) {
        // 创建RestTemplate对象
        RestTemplate restTemplate = new RestTemplate();

        // 创建HttpHeaders对象，并设置Content-Type为application/x-www-form-urlencoded
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);

        // 创建MultiValueMap对象，并添加参数
        MultiValueMap<String, String> map = new LinkedMultiValueMap<>();
        map.add("param1", "value1");
        map.add("param2", "value2");

        // 创建HttpEntity对象，并将headers和map作为参数传入
        HttpEntity<MultiValueMap<String, String>> requestEntity = new HttpEntity<>(map, headers);

        // 发送POST请求，并获取响应
        String response = restTemplate.postForObject("http://example.com/api", requestEntity, String.class);

        // 处理响应
        System.out.println(response);
    }
}