>记录，避免重复造轮子。 我们使用 Httpclient 时常用的请求有2个，HttpPost 和 HttpGet，一般 HttpPost 对传参 Json 的处理是: ```java HttpPost httpPost= new HttpPost(url); post.setEntity(new StringEntity(jsonString)); ``` 但 HttpDelete 携带 json 参数时，不支持 setEntity 方法，  其中不支持的原因是： 在 HttpMethods 中，包含 HttpGet, HttpPost, HttpPut, HttpDelete 等类来实现 http 的常用操作。其中，HttpPost 继承自 HttpEntityEnclosingRequestBase，HttpEntityEnclosingRequestBase 类又实现了 HttpEntityEnclosingRequest 接口，实现了 setEntity 的方法。   而 HttpDelete 继承自HttpRequestBase，没有实现 setEntity 的方法，因此无法设置 HttpEntity 对象。  这里解决的方案是：重写一个自己的 HttpDeleteWithBody 类，继承自 HttpEntityEnclosingRequestBase，覆盖其中的 getMethod 方法，从而返回 DELETE。 HttpDeleteWithBody.java ```java import org.apache.http.client.methods.HttpEntityEnclosingRequestBase; import java.net.URI; public class HttpDeleteWithBody extends HttpEntityEnclosingRequestBase { public static final String METHOD_NAME = "DELETE"; @Override public String getMethod() { return METHOD_NAME; } public HttpDeleteWithBody(final String uri) { super(); setURI(URI.create(uri)); } public HttpDeleteWithBody(final URI uri) { super(); setURI(uri); } public HttpDeleteWithBody() { super(); } } ``` 然后写发送请求的方法： ```java public static String sendDelete(String url, String jsonStr, String contentType, Map<String, String> headParam) { CloseableHttpResponse response = null; String resultString = ""; // 创建Httpclient对象 try (CloseableHttpClient httpClient = HttpClients.createDefault();) { // 创建HttpDelete请求 HttpEntityEnclosingRequestBase requestBase = new HttpDeleteWithBody(url); RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(30000) .setConnectionRequestTimeout(30000).setSocketTimeout(30000).build(); requestBase.setConfig(requestConfig); requestBase.addHeader("Content-type", !(contentType == null || "".equals(contentType)) ? contentType : "application/json;charset=utf-8"); requestBase.setHeader("Accept", "application/json"); packageHeader(headParam, requestBase); log.info("requestUrl:{}", url); log.info("requestStr:{}", jsonStr); // 创建请求内容 if (jsonStr != null) { StringEntity entity = new StringEntity(jsonStr, ContentType.APPLICATION_JSON); requestBase.setEntity(entity); } long beginTime = System.currentTimeMillis(); // 执行http请求 response = httpClient.execute(requestBase); log.info("接口耗时:{}", System.currentTimeMillis() - beginTime); resultString = EntityUtils.toString(response.getEntity(), DEFAULT_CHARSET); } catch (Exception e) { e.printStackTrace(); } finally { try { if (response != null) { response.close(); } } catch (IOException e) { e.printStackTrace(); } } return resultString; } ``` httpclient maven依赖 ``` <!-- 添加httpClient工具包 --> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>4.5.3</version> </dependency> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpmime</artifactId> <version>4.5</version> </dependency> ``` End.