RestTemplate请求工具类

RestTemplate工具类

注意此处采用的是okhttp

OkHttp3ClientHttpRequestFactory requestFactory = new OkHttp3ClientHttpRequestFactory();

若采用HttpClient只需要修改工厂即可

HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory();

具体代码如下：

import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.*;
import org.springframework.http.client.OkHttp3ClientHttpRequestFactory;
import org.springframework.http.converter.*;
import org.springframework.http.converter.xml.SourceHttpMessageConverter;
import org.springframework.web.client.RestClientException;
import org.springframework.web.client.RestTemplate;

import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;

/**
 * @author qyf
 * @desc http请求工具类
 */
@Slf4j
public class HttpUtil {

    static RestTemplate restTemplate;


    static {
        //使用okHttp3工厂
        OkHttp3ClientHttpRequestFactory requestFactory = new OkHttp3ClientHttpRequestFactory();
        // 设置建立连接超时时间  毫秒
        requestFactory.setConnectTimeout(10000);
        // 设置读取数据超时时间  毫秒
        requestFactory.setReadTimeout(10000);
        restTemplate = new RestTemplate(requestFactory);

        //采用fastJson 反序列化
        FastJsonHttpMessageConverter fastJsonHttpMessageConverter = new FastJsonHttpMessageConverter();
        FastJsonConfig fastJsonConfig = new FastJsonConfig();
        fastJsonConfig.setSerializerFeatures(
                SerializerFeature.WriteMapNullValue,
                SerializerFeature.WriteNullStringAsEmpty,
                SerializerFeature.WriteNullListAsEmpty,
                SerializerFeature.DisableCircularReferenceDetect);
        fastJsonHttpMessageConverter.setFastJsonConfig(fastJsonConfig);


        List<MediaType> mediaTypes = new ArrayList<>(fastJsonHttpMessageConverter.getSupportedMediaTypes());
        // 为json消息转换器新增直接text_plain类型  避免遇到响应体是json,而响应头是text/plain类型无法找到适合的解析
        mediaTypes.add(MediaType.TEXT_PLAIN);
        fastJsonHttpMessageConverter.setSupportedMediaTypes(mediaTypes);

        List<HttpMessageConverter<?>> messageConverters = Arrays.asList(
                new ByteArrayHttpMessageConverter(),
                new StringHttpMessageConverter(Charset.forName("utf-8")),
                new ResourceHttpMessageConverter(),
                new SourceHttpMessageConverter<>(),
                new FormHttpMessageConverter(),
                fastJsonHttpMessageConverter
        );
        restTemplate.setMessageConverters(messageConverters);

    }


    // ----------------------------------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 static <T> ResponseEntity<T> get(String url, Class<T> responseType) throws RestClientException {
        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 static <T> ResponseEntity<T> get(String url, Class<T> responseType, Object... uriVariables)
            throws RestClientException {
        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 static <T> ResponseEntity<T> get(String url, Class<T> responseType, Map<String, ?> uriVariables)
            throws RestClientException {
        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 static <T> ResponseEntity<T> get(String url, Map<String, String> headers, Class<T> responseType,
                                            Object... uriVariables) throws RestClientException {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.setAll(headers);
        return HttpUtil.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 static <T> ResponseEntity<T> get(String url, HttpHeaders headers, Class<T> responseType, Object... uriVariables)
            throws RestClientException {
        HttpEntity<?> requestEntity = new HttpEntity<>(headers);
        return HttpUtil.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 static <T> ResponseEntity<T> get(String url, Map<String, String> headers, Class<T> responseType,
                                            Map<String, ?> uriVariables) throws RestClientException {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.setAll(headers);
        return HttpUtil.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 static <T> ResponseEntity<T> get(String url, HttpHeaders headers, Class<T> responseType,
                                            Map<String, ?> uriVariables) throws RestClientException {
        HttpEntity<?> requestEntity = new HttpEntity<>(headers);
        return HttpUtil.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 static <T> ResponseEntity<T> post(String url, Class<T> responseType) throws RestClientException {
        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 static <T> ResponseEntity<T> post(String url, Object requestBody, Class<T> responseType)
            throws RestClientException {
        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 static <T> ResponseEntity<T> post(String url, Object requestBody, Class<T> responseType, Object... uriVariables)
            throws RestClientException {
        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 static <T> ResponseEntity<T> post(String url, Object requestBody, Class<T> responseType,
                                             Map<String, ?> uriVariables) throws RestClientException {
        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 static <T> ResponseEntity<T> post(String url, Map<String, String> headers, Object requestBody,
                                             Class<T> responseType, Object... uriVariables) throws RestClientException {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.setAll(headers);
        return HttpUtil.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 static <T> ResponseEntity<T> post(String url, HttpHeaders headers, Object requestBody, Class<T> responseType,
                                             Object... uriVariables) throws RestClientException {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody, headers);
        return HttpUtil.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 static <T> ResponseEntity<T> post(String url, Map<String, String> headers, Object requestBody,
                                             Class<T> responseType, Map<String, ?> uriVariables) throws RestClientException {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.setAll(headers);
        return HttpUtil.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 static <T> ResponseEntity<T> post(String url, HttpHeaders headers, Object requestBody, Class<T> responseType,
                                             Map<String, ?> uriVariables) throws RestClientException {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody, headers);
        return HttpUtil.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 static <T> ResponseEntity<T> post(String url, HttpEntity<?> requestEntity, Class<T> responseType,
                                             Object... uriVariables) throws RestClientException {
        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 static <T> ResponseEntity<T> post(String url, HttpEntity<?> requestEntity, Class<T> responseType,
                                             Map<String, ?> uriVariables) throws RestClientException {
        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 static <T> ResponseEntity<T> put(String url, Class<T> responseType, Object... uriVariables)
            throws RestClientException {
        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 static <T> ResponseEntity<T> put(String url, Object requestBody, Class<T> responseType, Object... uriVariables)
            throws RestClientException {
        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 static <T> ResponseEntity<T> put(String url, Object requestBody, Class<T> responseType, Map<String, ?> uriVariables)
            throws RestClientException {
        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 static <T> ResponseEntity<T> put(String url, Map<String, String> headers, Object requestBody, Class<T> responseType,
                                            Object... uriVariables) throws RestClientException {
        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 static <T> ResponseEntity<T> put(String url, HttpHeaders headers, Object requestBody, Class<T> responseType,
                                            Object... uriVariables) throws RestClientException {
        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 static <T> ResponseEntity<T> put(String url, Map<String, String> headers, Object requestBody, Class<T> responseType,
                                            Map<String, ?> uriVariables) throws RestClientException {
        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 static <T> ResponseEntity<T> put(String url, HttpHeaders headers, Object requestBody, Class<T> responseType,
                                            Map<String, ?> uriVariables) throws RestClientException {
        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 static <T> ResponseEntity<T> put(String url, HttpEntity<?> requestEntity, Class<T> responseType,
                                            Object... uriVariables) throws RestClientException {
        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 static <T> ResponseEntity<T> put(String url, HttpEntity<?> requestEntity, Class<T> responseType,
                                            Map<String, ?> uriVariables) throws RestClientException {
        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 static <T> ResponseEntity<T> delete(String url, Class<T> responseType, Object... uriVariables)
            throws RestClientException {
        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 static <T> ResponseEntity<T> delete(String url, Class<T> responseType, Map<String, ?> uriVariables)
            throws RestClientException {
        return HttpUtil.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 static <T> ResponseEntity<T> delete(String url, Object requestBody, Class<T> responseType, Object... uriVariables)
            throws RestClientException {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody);
        return HttpUtil.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 static <T> ResponseEntity<T> delete(String url, Object requestBody, Class<T> responseType,
                                               Map<String, ?> uriVariables) throws RestClientException {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody);
        return HttpUtil.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 static <T> ResponseEntity<T> delete(String url, Map<String, String> headers, Class<T> responseType,
                                               Object... uriVariables) throws RestClientException {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.setAll(headers);
        return HttpUtil.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 static <T> ResponseEntity<T> delete(String url, HttpHeaders headers, Class<T> responseType, Object... uriVariables)
            throws RestClientException {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(headers);
        return HttpUtil.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 static <T> ResponseEntity<T> delete(String url, Map<String, String> headers, Class<T> responseType,
                                               Map<String, ?> uriVariables) throws RestClientException {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.setAll(headers);
        return HttpUtil.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 static <T> ResponseEntity<T> delete(String url, HttpHeaders headers, Class<T> responseType,
                                               Map<String, ?> uriVariables) throws RestClientException {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(headers);
        return HttpUtil.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 static <T> ResponseEntity<T> delete(String url, Map<String, String> headers, Object requestBody,
                                               Class<T> responseType, Object... uriVariables) throws RestClientException {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.setAll(headers);
        return HttpUtil.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 static <T> ResponseEntity<T> delete(String url, HttpHeaders headers, Object requestBody, Class<T> responseType,
                                               Object... uriVariables) throws RestClientException {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody, headers);
        return HttpUtil.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 static <T> ResponseEntity<T> delete(String url, Map<String, String> headers, Object requestBody,
                                               Class<T> responseType, Map<String, ?> uriVariables) throws RestClientException {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.setAll(headers);
        return HttpUtil.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 static <T> ResponseEntity<T> delete(String url, HttpHeaders headers, Object requestBody, Class<T> responseType,
                                               Map<String, ?> uriVariables) throws RestClientException {
        HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody, headers);
        return HttpUtil.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 static <T> ResponseEntity<T> delete(String url, HttpEntity<?> requestEntity, Class<T> responseType,
                                               Object... uriVariables) throws RestClientException {
        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 static <T> ResponseEntity<T> delete(String url, HttpEntity<?> requestEntity, Class<T> responseType,
                                               Map<String, ?> uriVariables) throws RestClientException {
        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 static <T> ResponseEntity<T> exchange(String url, HttpMethod method, HttpEntity<?> requestEntity,
                                                 Class<T> responseType, Object... uriVariables) throws RestClientException {
        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 static <T> ResponseEntity<T> exchange(String url, HttpMethod method, HttpEntity<?> requestEntity,
                                                 Class<T> responseType, Map<String, ?> uriVariables) throws RestClientException {
        return restTemplate.exchange(url, method, requestEntity, responseType, uriVariables);
    }

}