工具类之关于RestTemplateUtil工具类的使用_java

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.SimpleClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;

@Configuration
public class RestTemplateConfig {

    @Bean
    public RestTemplate restTemplate() {
        SimpleClientHttpRequestFactory requestFactory = new SimpleClientHttpRequestFactory();
        requestFactory.setConnectTimeout(60000);
        requestFactory.setReadTimeout(60000);
        //使用okhttp
        //RestTemplate restTemplate = new RestTemplate(new OkHttp3ClientHttpRequestFactory());
        RestTemplate restTemplate = new RestTemplate(requestFactory);
        return restTemplate;
    }
}

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Component;
import org.springframework.web.client.RestTemplate;

/**
 * RestTemplateUtil工具类
 */
@Component
public class RestTemplateUtil {

    @Autowired
    private RestTemplate restTemplate;
  /*  private static class SingletonRestTemplate {

        static final RestTemplate INSTANCE = new RestTemplate();
    }

    private RestTemplateUtil() {
    }


    public static RestTemplate getInstance() {
        return SingletonRestTemplate.INSTANCE;
    }*/

    /**
     * post 请求
     *
     * @param url  请求路径
     * @param data body数据
     * @return
     */
    public String post(String url, String data) {
        HttpHeaders headers = new HttpHeaders();
        headers.add("Accept", "application/json");
        headers.add("Content-Encoding", "UTF-8");
        headers.add("Content-Type", "application/json; charset=UTF-8");
        HttpEntity<String> requestEntity = new HttpEntity<>(data, headers);
        return restTemplate.postForObject(url, requestEntity, String.class);
    }

    /**
     * get 请求
     *
     * @param url   请求路径
     * @param token JWT所需的Token，不需要的可去掉
     * @return
     */
    public String get(String url, String token) {
        HttpHeaders headers = new HttpHeaders();
        headers.add("Accept", "application/json");
        headers.add("Content-Encoding", "UTF-8");
        headers.add("Content-Type", "application/json; charset=UTF-8");
        if (token != null) {
            headers.add("Authorization", token);
        }
        HttpEntity<String> requestEntity = new HttpEntity<>(null, headers);
        ResponseEntity<String> response = restTemplate.exchange(url, HttpMethod.GET, requestEntity, String.class);
        String responseBody = response.getBody();
        return responseBody;
    }
 /**
     * get 请求
     *
     * @param url   请求路径
     * @return
     */

    public  <T> T getWithSession(String url, String sessionId, Class<T> responseType, Object... uriVariables) {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.add("session_id", sessionId);
        return get(url, httpHeaders, responseType, uriVariables).getBody();
    }

    // ----------------------------------GET-------------------------------------------------------

    /**
     * GET请求调用方式
     *
     * @param url 请求URL
     * @param responseType 返回对象类型
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> get(String url, Class<T> responseType) {
        return restTemplate.getForEntity(url, responseType);
    }

    /**
     * GET请求调用方式
     *
     * @param url 请求URL
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> get(String url, Class<T> responseType, Object... uriVariables) {
        return restTemplate.getForEntity(url, responseType, uriVariables);
    }

    /**
     * GET请求调用方式
     *
     * @param url 请求URL
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，与Map中的key对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> get(String url, Class<T> responseType, Map<String, ?> uriVariables) {
        return restTemplate.getForEntity(url, responseType, uriVariables);
    }

    /**
     * 带请求头的GET请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> get(String url, Map<String, String> headers, Class<T> responseType, Object... uriVariables) {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.setAll(headers);
        return get(url, httpHeaders, responseType, uriVariables);
    }

    /**
     * 带请求头的GET请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> get(String url, HttpHeaders headers, Class<T> responseType, Object... uriVariables) {
        HttpEntity<?> requestEntity = new HttpEntity<>(headers);
        return exchange(url, HttpMethod.GET, requestEntity, responseType, uriVariables);
    }

    /**
     * 带请求头的GET请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，与Map中的key对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> get(String url, Map<String, String> headers, Class<T> responseType, Map<String, ?> uriVariables) {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.setAll(headers);
        return get(url, httpHeaders, responseType, uriVariables);
    }

    /**
     * 带请求头的GET请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，与Map中的key对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> get(String url, HttpHeaders headers, Class<T> responseType, Map<String, ?> uriVariables) {
        HttpEntity<?> requestEntity = new HttpEntity<>(headers);
        return exchange(url, HttpMethod.GET, requestEntity, responseType, uriVariables);
    }

    // ----------------------------------POST-------------------------------------------------------

    /**
     * POST请求调用方式
     *
     * @param url 请求URL
     * @param responseType 返回对象类型
     * @return
     */
    public  <T> ResponseEntity<T> post(String url, Class<T> responseType) {
        return restTemplate.postForEntity(url, HttpEntity.EMPTY, responseType);
    }

    /**
     * POST请求调用方式
     *
     * @param url 请求URL
     * @param requestBody 请求参数体
     * @param responseType 返回对象类型
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> post(String url, Object requestBody, Class<T> responseType) {
        return restTemplate.postForEntity(url, requestBody, responseType);
    }

    /**
     * POST请求调用方式
     *
     * @param url 请求URL
     * @param requestBody 请求参数体
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> post(String url, Object requestBody, Class<T> responseType, Object... uriVariables) {
        return restTemplate.postForEntity(url, requestBody, responseType, uriVariables);
    }

    /**
     * POST请求调用方式
     *
     * @param url 请求URL
     * @param requestBody 请求参数体
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，与Map中的key对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> post(String url, Object requestBody, Class<T> responseType, Map<String, ?> uriVariables) {
        return restTemplate.postForEntity(url, requestBody, responseType, uriVariables);
    }

    /**
     * 带请求头的POST请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param requestBody 请求参数体
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> post(String url, Map<String, String> headers, Object requestBody, Class<T> responseType, Object... uriVariables) {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.setAll(headers);
        return post(url, httpHeaders, requestBody, responseType, uriVariables);
    }

    /**
     * 带请求头的POST请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param requestBody 请求参数体
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> post(String url, HttpHeaders headers, Object requestBody, Class<T> responseType, Object... uriVariables) {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody, headers);
        return post(url, requestEntity, responseType, uriVariables);
    }

    /**
     * 带请求头的POST请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param requestBody 请求参数体
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，与Map中的key对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> post(String url, Map<String, String> headers, Object requestBody, Class<T> responseType, Map<String, ?> uriVariables) {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.setAll(headers);
        return post(url, httpHeaders, requestBody, responseType, uriVariables);
    }

    /**
     * 带请求头的POST请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param requestBody 请求参数体
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，与Map中的key对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> post(String url, HttpHeaders headers, Object requestBody, Class<T> responseType, Map<String, ?> uriVariables) {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody, headers);
        return post(url, requestEntity, responseType, uriVariables);
    }

    /**
     * 自定义请求头和请求体的POST请求调用方式
     *
     * @param url 请求URL
     * @param requestEntity 请求头和请求体封装对象
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> post(String url, HttpEntity<?> requestEntity, Class<T> responseType, Object... uriVariables) {
        return restTemplate.exchange(url, HttpMethod.POST, requestEntity, responseType, uriVariables);
    }

    /**
     * 自定义请求头和请求体的POST请求调用方式
     *
     * @param url 请求URL
     * @param requestEntity 请求头和请求体封装对象
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，与Map中的key对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> post(String url, HttpEntity<?> requestEntity, Class<T> responseType, Map<String, ?> uriVariables) {
        return restTemplate.exchange(url, HttpMethod.POST, requestEntity, responseType, uriVariables);
    }

    // ----------------------------------PUT-------------------------------------------------------

    /**
     * PUT请求调用方式
     *
     * @param url 请求URL
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> put(String url, Class<T> responseType, Object... uriVariables) {
        return put(url, HttpEntity.EMPTY, responseType, uriVariables);
    }

    /**
     * PUT请求调用方式
     *
     * @param url 请求URL
     * @param requestBody 请求参数体
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> put(String url, Object requestBody, Class<T> responseType, Object... uriVariables) {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody);
        return put(url, requestEntity, responseType, uriVariables);
    }

    /**
     * PUT请求调用方式
     *
     * @param url 请求URL
     * @param requestBody 请求参数体
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，与Map中的key对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> put(String url, Object requestBody, Class<T> responseType, Map<String, ?> uriVariables) {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody);
        return put(url, requestEntity, responseType, uriVariables);
    }

    /**
     * 带请求头的PUT请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param requestBody 请求参数体
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> put(String url, Map<String, String> headers, Object requestBody, Class<T> responseType, Object... uriVariables) {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.setAll(headers);
        return put(url, httpHeaders, requestBody, responseType, uriVariables);
    }

    /**
     * 带请求头的PUT请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param requestBody 请求参数体
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> put(String url, HttpHeaders headers, Object requestBody, Class<T> responseType, Object... uriVariables) {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody, headers);
        return put(url, requestEntity, responseType, uriVariables);
    }

    /**
     * 带请求头的PUT请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param requestBody 请求参数体
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，与Map中的key对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> put(String url, Map<String, String> headers, Object requestBody, Class<T> responseType, Map<String, ?> uriVariables) {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.setAll(headers);
        return put(url, httpHeaders, requestBody, responseType, uriVariables);
    }

    /**
     * 带请求头的PUT请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param requestBody 请求参数体
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，与Map中的key对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> put(String url, HttpHeaders headers, Object requestBody, Class<T> responseType, Map<String, ?> uriVariables) {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody, headers);
        return put(url, requestEntity, responseType, uriVariables);
    }

    /**
     * 自定义请求头和请求体的PUT请求调用方式
     *
     * @param url 请求URL
     * @param requestEntity 请求头和请求体封装对象
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> put(String url, HttpEntity<?> requestEntity, Class<T> responseType, Object... uriVariables) {
        return restTemplate.exchange(url, HttpMethod.PUT, requestEntity, responseType, uriVariables);
    }

    /**
     * 自定义请求头和请求体的PUT请求调用方式
     *
     * @param url 请求URL
     * @param requestEntity 请求头和请求体封装对象
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，与Map中的key对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> put(String url, HttpEntity<?> requestEntity, Class<T> responseType, Map<String, ?> uriVariables) {
        return restTemplate.exchange(url, HttpMethod.PUT, requestEntity, responseType, uriVariables);
    }

    // ----------------------------------DELETE-------------------------------------------------------

    /**
     * DELETE请求调用方式
     *
     * @param url 请求URL
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> delete(String url, Class<T> responseType, Object... uriVariables) {
        return delete(url, HttpEntity.EMPTY, responseType, uriVariables);
    }

    /**
     * DELETE请求调用方式
     *
     * @param url 请求URL
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，与Map中的key对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> delete(String url, Class<T> responseType, Map<String, ?> uriVariables) {
        return delete(url, HttpEntity.EMPTY, responseType, uriVariables);
    }

    /**
     * DELETE请求调用方式
     *
     * @param url 请求URL
     * @param requestBody 请求参数体
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> delete(String url, Object requestBody, Class<T> responseType, Object... uriVariables) {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody);
        return delete(url, requestEntity, responseType, uriVariables);
    }

    /**
     * DELETE请求调用方式
     *
     * @param url 请求URL
     * @param requestBody 请求参数体
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，与Map中的key对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> delete(String url, Object requestBody, Class<T> responseType, Map<String, ?> uriVariables) {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody);
        return delete(url, requestEntity, responseType, uriVariables);
    }

    /**
     * 带请求头的DELETE请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> delete(String url, Map<String, String> headers, Class<T> responseType, Object... uriVariables) {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.setAll(headers);
        return delete(url, httpHeaders, responseType, uriVariables);
    }

    /**
     * 带请求头的DELETE请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> delete(String url, HttpHeaders headers, Class<T> responseType, Object... uriVariables) {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(headers);
        return delete(url, requestEntity, responseType, uriVariables);
    }

    /**
     * 带请求头的DELETE请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，与Map中的key对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> delete(String url, Map<String, String> headers, Class<T> responseType, Map<String, ?> uriVariables) {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.setAll(headers);
        return delete(url, httpHeaders, responseType, uriVariables);
    }

    /**
     * 带请求头的DELETE请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，与Map中的key对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> delete(String url, HttpHeaders headers, Class<T> responseType, Map<String, ?> uriVariables) {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(headers);
        return delete(url, requestEntity, responseType, uriVariables);
    }

    /**
     * 带请求头的DELETE请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param requestBody 请求参数体
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> delete(String url, Map<String, String> headers, Object requestBody, Class<T> responseType, Object... uriVariables) {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.setAll(headers);
        return delete(url, httpHeaders, requestBody, responseType, uriVariables);
    }

    /**
     * 带请求头的DELETE请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param requestBody 请求参数体
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> delete(String url, HttpHeaders headers, Object requestBody, Class<T> responseType, Object... uriVariables) {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody, headers);
        return delete(url, requestEntity, responseType, uriVariables);
    }

    /**
     * 带请求头的DELETE请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param requestBody 请求参数体
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，与Map中的key对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> delete(String url, Map<String, String> headers, Object requestBody, Class<T> responseType, Map<String, ?> uriVariables) {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.setAll(headers);
        return delete(url, httpHeaders, requestBody, responseType, uriVariables);
    }

    /**
     * 带请求头的DELETE请求调用方式
     *
     * @param url 请求URL
     * @param headers 请求头参数
     * @param requestBody 请求参数体
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，与Map中的key对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> delete(String url, HttpHeaders headers, Object requestBody, Class<T> responseType, Map<String, ?> uriVariables) {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody, headers);
        return delete(url, requestEntity, responseType, uriVariables);
    }

    /**
     * 自定义请求头和请求体的DELETE请求调用方式
     *
     * @param url 请求URL
     * @param requestEntity 请求头和请求体封装对象
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> delete(String url, HttpEntity<?> requestEntity, Class<T> responseType, Object... uriVariables) {
        return restTemplate.exchange(url, HttpMethod.DELETE, requestEntity, responseType, uriVariables);
    }

    /**
     * 自定义请求头和请求体的DELETE请求调用方式
     *
     * @param url 请求URL
     * @param requestEntity 请求头和请求体封装对象
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，与Map中的key对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> delete(String url, HttpEntity<?> requestEntity, Class<T> responseType, Map<String, ?> uriVariables) {
        return restTemplate.exchange(url, HttpMethod.DELETE, requestEntity, responseType, uriVariables);
    }

    // ----------------------------------通用方法-------------------------------------------------------

    /**
     * 通用调用方式
     *
     * @param url 请求URL
     * @param method 请求方法类型
     * @param requestEntity 请求头和请求体封装对象
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，按顺序依次对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> exchange(String url, HttpMethod method, HttpEntity<?> requestEntity, Class<T> responseType, Object... uriVariables) {
        return restTemplate.exchange(url, method, requestEntity, responseType, uriVariables);
    }

    /**
     * 通用调用方式
     *
     * @param url 请求URL
     * @param method 请求方法类型
     * @param requestEntity 请求头和请求体封装对象
     * @param responseType 返回对象类型
     * @param uriVariables URL中的变量，与Map中的key对应
     * @return ResponseEntity 响应对象封装类
     */
    public  <T> ResponseEntity<T> exchange(String url, HttpMethod method, HttpEntity<?> requestEntity, Class<T> responseType, Map<String, ?> uriVariables) {
        return restTemplate.exchange(url, method, requestEntity, responseType, uriVariables);
    }
}

@Configuration
public class RestTemplateConfig {
    @Bean
    public RestTemplate restTemplate(RestTemplateBuilder restTemplateBuilder) {
        RestTemplate build = restTemplateBuilder
                .requestFactory(OkHttp3ClientHttpRequestFactory.class)
                .setConnectTimeout(Duration.ofSeconds(10))
                .setReadTimeout(Duration.ofSeconds(20))
                .build();
        build.getMessageConverters().add(new TextJsonSupport(Jackson2ObjectMapperBuilder.json().build()));
        return build;
    }
}
public class TextJsonSupport extends MappingJackson2HttpMessageConverter {
    public TextJsonSupport(ObjectMapper objectMapper) {
        super(objectMapper);
        setSupportedMediaTypes(Arrays.asList(new MediaType("text", "json")));
    }
 
    public TextJsonSupport() {
        super();
    }
}

public class RestTemplateUtil {
    public static Object doGet(String url, HttpHeaders httpHeaders) {
        RestTemplate restTemplate = new RestTemplate();
        HttpEntity<Object> request = new HttpEntity<>(httpHeaders);
        ResponseEntity<Object> result = restTemplate.exchange(url, HttpMethod.GET, request, Object.class);
        if (null != result && null != result.getBody()) {
            return result.getBody();
        }
        return null;
    }
 
    public static Object doPost(String url, HttpHeaders httpHeaders, JSONObject params) {
        RestTemplate restTemplate = new RestTemplate();
        HttpEntity<Object> request = new HttpEntity<>(params, httpHeaders);
        ResponseEntity<Object> result = restTemplate.exchange(url, HttpMethod.POST, request, Object.class);
        if (null != result && null != result.getBody()) {
            return result.getBody();
        }
        return null;
    }
 
    public static Object doPostJson(String url, HttpHeaders httpHeaders, JSONObject params) {
        RestTemplate restTemplate = new RestTemplate();
        HttpEntity<Object> request = new HttpEntity<>(params, httpHeaders);
        ResponseEntity<JSONObject> result = restTemplate.exchange(url, HttpMethod.POST, request, JSONObject.class);
        if (null != result && null != result.getBody()) {
            return result.getBody();
        }
        return null;
    }
}