package com.http;import java.io.File;import java.io.IOException;import java.io.UnsupportedEncodingException;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.HttpStatus;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.HttpClient;import org.apache.http.client.methods.HttpPost;import org.apache.http.entity.mime.MultipartEntity;import org.apache.http.entity.mime.content.FileBody;import org.apache.http.entity.mime.content.StringBody;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.util.EntityUtils;import org.junit.Test;public class HttpClientUtil { ???@Test ???public void testHttp() { ???????//创建HttpClient对象 ???????HttpClient client = new DefaultHttpClient(); ???????//构建POST请求 ??请求地址请更换为自己的。 ???????//1) ???????HttpPost post = new HttpPost("XX"); ??????File file=new File("C:\\Users\\admin\\Desktop\\xidada.jpg"); ???????FileBody fileBody=new FileBody(file); ???????try { ???????????StringBody name = new StringBody("xidada.jpg"); ???????????MultipartEntity reqEntity = new MultipartEntity(); ???????????StringBody bucketId = new StringBody("402880bd66a545e90166a545f3700000"); ???????????reqEntity.addPart("bucketId", bucketId);//对应接口端的参数名称 ???????????reqEntity.addPart("name", name); ???????????reqEntity.addPart("file", fileBody);//file1为请求后台的File upload;属性 ?????????????post.setEntity(reqEntity); ???????????HttpResponse response = client.execute(post); ???????????int statusCode = response.getStatusLine().getStatusCode(); ???????????if(statusCode == HttpStatus.SC_OK){ ???????????????????????????????System.out.println("服务器正常响应....."); ???????????????????????????????HttpEntity resEntity = response.getEntity(); ???????????????????????????????????????????????System.out.println(EntityUtils.toString(resEntity));//httpclient自带的工具类读取返回数据 ???????????????????????????????System.out.println(resEntity.getContent()); ???????????????????EntityUtils.consume(resEntity); ???????????} ???????}catch (UnsupportedEncodingException e) { ???????????????????????e.printStackTrace(); ???????} catch (ClientProtocolException e) { ???????????????????????e.printStackTrace(); ???????} catch (IOException e) { ???????????????????????e.printStackTrace(); ???????} ??????????}}HTTPclient 4.2.2 ?传参数和文件流
原文地址：https://www.cnblogs.com/woshuaile/p/10028513.html