java使用common-httpclient包实现post请求方法示例
前言
项目中需要请求第三方接口,而且要求请求参数数据为json类型的。本来首先使用的是httpclient的jar包,但是因为项目中已经使用了common-httpclient的jar包,引起了冲突,所以不得不使用common-httpclient来实现。
示例代码:
import java.io.BufferedReader; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.net.URL; import java.net.URLConnection; import java.util.List; import java.util.Map; import java.util.zip.GZIPInputStream; import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.HttpMethod; import org.apache.commons.httpclient.NameValuePair; import org.apache.commons.httpclient.methods.GetMethod; import org.apache.commons.httpclient.methods.PostMethod; import org.apache.commons.httpclient.methods.RequestEntity; import org.apache.commons.httpclient.methods.StringRequestEntity; import org.apache.commons.io.IOUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; public class HTTPUtils { private static Logger logger = LoggerFactory.getLogger(HTTPUtils.class); /** * post请求 * @param url * @param json * @return */ public static String postJosnContent(String url, String Json) throws Exception { // HttpPost method = new HttpPost(url); // DefaultHttpClient httpClient = new DefaultHttpClient(); // String ret = null; // try { // StringEntity entity = new StringEntity(Json,"UTF-8");//解决中文乱码问题 // entity.setContentEncoding("UTF-8"); // entity.setContentType("application/json"); // method.setEntity(entity); // HttpResponse result = httpClient.execute(method); // ret = EntityUtils.toString(result.getEntity()); // } catch (Exception e) { // throw e; // } finally { // method.releaseConnection(); // } // return ret; logger.error("请求接口参数:" + Json); PostMethod method = new PostMethod(url); HttpClient httpClient = new HttpClient(); try { RequestEntity entity = new StringRequestEntity(Json,"application/json","UTF-8"); method.setRequestEntity(entity); httpClient.executeMethod(method); logger.error("请求接口路径url:" + method.getURI().toString()); InputStream in = method.getResponseBodyAsStream(); //下面将stream转换为String StringBuffer sb = new StringBuffer(); InputStreamReader isr = new InputStreamReader(in, "UTF-8"); char[] b = new char[4096]; for(int n; (n = isr.read(b)) != -1;) { sb.append(new String(b, 0, n)); } String returnStr = sb.toString(); return returnStr; } catch (Exception e) { e.printStackTrace(); throw e; } finally { method.releaseConnection(); } } }
总结
以上就是这篇文章的全部内容了,希望本文的内容对大家的学习或者工作具有一定的参考学习价值,如果有疑问大家可以留言交流,谢谢大家对我们的支持。
赞 (0)