java 發送http get post 請求，以及java通過httpclient中轉上傳文件

java 發送http get post 請求，以及java通過httpclient中轉上傳文件

package com.websocket.common.http.util;


import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;


import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.mime.HttpMultipartMode;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


public class HttpRequestUtil {
	
	private static final Logger LOGGER  = LoggerFactory.getLogger(HttpRequestUtil.class);
	
	/**
	 * send http get請求
	 * @param url
	 * @return
	 */
	public static String requestGet(String url){
		CloseableHttpResponse  response =null;
		try {
			CloseableHttpClient  client = HttpClients.createDefault();
			//發送get 請求
			HttpGet request = new HttpGet(url);
			request.addHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.2; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.87 Safari/537.36");
			request.addHeader("accept", "*/*");
			request.addHeader("connection", "Keep-Alive");
			response = client.execute(request);
			if((null!=response) && (HttpStatus.SC_OK == response.getStatusLine().getStatusCode())){
				//讀取返回結果
				String result = "";
				if(null != response.getEntity()){
					result = EntityUtils.toString(response.getEntity(),"utf-8");
				}
				return result;
			}else{
				if(null!=response&&null!=response.getStatusLine()){
					return "send requestGet statusCode:"+response.getStatusLine().getStatusCode();
				}else{
					return "send requestGet no response";
				}
			}
		} catch (Exception e) {
			LOGGER.error("send requestGet ERROR",e);
			return "requestGet ERROR";
		} finally {
			if(null!=response){
				try {
					response.close();
				} catch (Exception e2) {
					LOGGER.error("response close error:",e2);
				}
			}
		}
	}
	
	/**
	 * send http post request 請求
	 * @param url
	 * @param params
	 * @return
	 */
	public static String requestPost(String url,Map<String,String> params){
		CloseableHttpResponse  response = null;
		String result = "";
		try {
			List<NameValuePair> formParams = new ArrayList<NameValuePair>();
			for (Map.Entry<String, String> entry : params.entrySet()) {
				formParams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
	        }
			// 編碼
			HttpEntity formEntity = new UrlEncodedFormEntity(formParams, Consts.UTF_8);
			CloseableHttpClient  client = HttpClients.createDefault(); 
			HttpPost request = new HttpPost(url);
			request.setEntity(formEntity);
			request.addHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.2; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.87 Safari/537.36");
			request.addHeader("accept", "*/*");
			request.addHeader("connection", "Keep-Alive");
			response = client.execute(request);
			if((null!=response) && (HttpStatus.SC_OK == response.getStatusLine().getStatusCode())){
				//讀取返回結果
				if(null != response.getEntity()){
					result = EntityUtils.toString(response.getEntity(),"utf-8");
				}
				return result;
			}else{
				if(null!=response&&null!=response.getStatusLine()){
					return "send requestPost statusCode:"+response.getStatusLine().getStatusCode();
				}else{
					return "send requestPost no response";
				}
			}
		} catch (Exception e) {
			LOGGER.error("send POST request Exception:",e);
			return "Post request Exception";
		} finally {
			if(null!=response){
				try {
					response.close();
				} catch (Exception e2) {
					LOGGER.error("response close error:",e2);
				}
			}
		}
	}
	/**
	 * 中轉上傳，使用wx頭像上傳等
	 * @param url
	 * @param file
	 * @return
	 */
	public static String requestPost(String url,File file){
		CloseableHttpResponse  response = null;
		String result = "";
		try {
			MultipartEntityBuilder multipartEntity = MultipartEntityBuilder.create();
	        multipartEntity.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
	        multipartEntity.addPart("media", new FileBody(file));
			CloseableHttpClient  client = HttpClients.createDefault();
			HttpPost request = new HttpPost(url);
			request.addHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.2; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.87 Safari/537.36");
			request.addHeader("accept", "*/*");
			request.addHeader("connection", "Keep-Alive");
			request.setEntity(multipartEntity.build());
			response = client.execute(request);
			if((null!=response) && (HttpStatus.SC_OK == response.getStatusLine().getStatusCode())){
				//讀取返回結果
				if(null != response.getEntity()){
					result = EntityUtils.toString(response.getEntity(),"utf-8");
				}
				return result;
			}else{
				if(null!=response&&null!=response.getStatusLine()){
					return "send requestPost uploadfile statusCode:"+response.getStatusLine().getStatusCode();
				}else{
					return "send requestPost uploadfile no response";
				}
			}
		} catch (Exception e) {
			LOGGER.error("send POST uploadfile request Exception:",e);
			return "Post uploadfile request Exception";
		} finally {
			if(null!=response){
				try {
					response.close();
				} catch (Exception e2) {
					LOGGER.error("response close error:",e2);
				}
			}
		}
	}
	
	public static void main(String args[]){
		String result = requestPost("http://api.app.wantoutiao.net/news/newsList",new HashMap<String,String>());
		System.out.println(result);
	}
}