httpclient发送请求的几种方式

package asi;import org.apache.http.HttpEntity;import org.apache.http.client.config.RequestConfig;import org.apache.http.client.methods.CloseableHttpResponse;import org.apache.http.client.methods.HttpPost;import org.apache.http.entity.StringEntity;import org.apache.http.impl.client.CloseableHttpClient;import org.apache.http.impl.client.HttpClients;import org.apache.http.util.EntityUtils;public class TestHttpClient { ????public static void main(String[] args){ ?RequestConfig requestConfig = RequestConfig.custom() ??????????????.setSocketTimeout(150000) ??????????????.setConnectTimeout(150000) ??????????????.setConnectionRequestTimeout(150000) ??????????????.build(); ??????CloseableHttpClient httpClient = ?HttpClients.createDefault(); ????CloseableHttpResponse response = null; ??????HttpEntity httpEntity = null; ??????String responseContent = null; ???????String url=... ?String json=... ?HttpPost httpPost=new HttpPost(url); ??????httpPost.addHeader("Content-type","application/json; charset=utf-8"); ???httpPost.setHeader("Accept", "application/json"); ????try { ??????????StringEntity stringEntity = new StringEntity(json, "UTF-8"); ??????????stringEntity.setContentType("application/x-www-form-urlencoded"); ??????????httpPost.setEntity(stringEntity); ??????????httpPost.setConfig(requestConfig); ?????????????????response = httpClient.execute(httpPost); ??????????httpEntity = response.getEntity(); ??????????responseContent = EntityUtils.toString(httpEntity, "UTF-8"); ????} catch (Exception e) { ??????????e.printStackTrace(); ??????} ??????System.out.println(responseContent); } }