HttpClient请求URL
Posted 十一路客
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1. 编写HttpClientUtil做POST和GET请求
import com.alibaba.fastjson.JSON;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
/**
* Created by alibaba on 2017/11/8.
*/
public class HttpClientUtil
private static Logger logger = LoggerFactory.getLogger(HttpClientUtil.class);
/**
* @param url 请求地址
* @param param 请求参数
*
* @return map - status 返回状态 1-失败 0-成功 Integer
* @return map - result 失败原因 or 请求成功后api的返回信息 String
* */
public static HashMap<String, Object> doPost(String url, Map<String,Object> param)
logger.info("url: " + url);
String result = "";
Integer status = 0;
HashMap<String,Object> returnMap = new HashMap<String,Object>();
try
HttpClient client = HttpClients.createDefault();
HttpPost request = new HttpPost(url);
String jsonStr = "";
if(param != null)
jsonStr = JSON.toJSONString(param);
logger.info("jsonStr: " + jsonStr);
StringEntity requestEntity = new StringEntity(jsonStr, "UTF-8");
requestEntity.setContentType("application/json;charset=UTF-8");
request.setEntity(requestEntity);
HttpResponse response = client.execute(request);
if(HttpStatus.SC_OK == response.getStatusLine().getStatusCode())
HttpEntity responseEntity = response.getEntity();
if(responseEntity != null)
status = 0;
result = EntityUtils.toString(responseEntity,"UTF-8");
else
status = 1;
result = "POST接口响应实体为空！";
else
status = 1;
result = "POST接口请求出错！";
catch (Exception e)
e.printStackTrace();
status = 1;
result = "POST接口调用出现异常，exception: " + e.toString();
if(status == 1)
logger.error("POST接口【" + url +"】请求出错！ 出错信息为： " + result);
returnMap.put("status", status);
returnMap.put("result", result);
return returnMap;
/**
* @param url 请求地址
* @param param 请求参数
*
* @return map - status 返回状态 1-失败 0-成功 Integer
* @return map - result 失败原因 or 请求成功后api的返回信息 String
* */
public static HashMap<String, Object> doGet(String url, Map<String,Object> param)
logger.info("Get url: " + url);
String result = "";
Integer status = 0;
HashMap<String,Object> returnMap = new HashMap<String,Object>();
try
HttpClient client = HttpClients.createDefault();
String paramStr = "";
if (param != null)
StringBuilder myStringBuilder = new StringBuilder("?");
Iterator<Map.Entry<String, Object>> it = param.entrySet().iterator();
while (it.hasNext())
Map.Entry<String, Object> entry = it.next();
Object key = entry.getKey();
myStringBuilder.append(key);
myStringBuilder.append('=');
String value = entry.getValue().toString();
myStringBuilder.append(URLEncoder.encode(value, "UTF-8"));
if (it.hasNext())
myStringBuilder.append("&");
paramStr = myStringBuilder.toString();
String newUrl = url + paramStr;
logger.info("GET url : " + newUrl);
HttpGet request = new HttpGet(newUrl);
HttpResponse response = client.execute(request);
if(HttpStatus.SC_OK == response.getStatusLine().getStatusCode())
HttpEntity responseEntity = response.getEntity();
if(responseEntity != null)
status = 0;
result = EntityUtils.toString(responseEntity,"UTF-8");
else
status = 1;
result = "GET接口响应实体为空！";
else
status = 1;
result = "GET接口请求出错！";
catch (Exception e)
e.printStackTrace();
status = 1;
result = "GET接口调用出现异常，exception: " + e.toString();
if(status == 1)
logger.error( "GET接口【" + url +"】请求出错！ 出错信息为： " + result);
returnMap.put("status", status);
returnMap.put("result", result);
return returnMap;
/* public static void main(String[] args)
//测试doget
String url = "http://XX.XX.XX.XX";
HashMap<String, Object> param = new HashMap<String, Object>();
param.put("from", 1510120000);
param.put("to", 1510128912);
HashMap<String, Object> returnMap = HttpClientUtil.doGet(url, param);
Integer status = (Integer)returnMap.get("status");
String result = (String)returnMap.get("result");
logger.info("doGet status: " + status);
logger.info("doGet result: " + result);
//测试dopost
// String url = "http://XXX.XX.XX.XX/api";
// HashMap<String, Object> param = new HashMap<String, Object>();
// param.put("key", "XXXX-XXXX-XXX-XXXX-XXXX");
// param.put("user","test");
// param.put("method", "testMethod");
//
// HashMap<String, Object> returnMap = HttpClientUtil.doPost(url, param);
//
// Integer status = (Integer)returnMap.get("status");
// String result = (String)returnMap.get("result");
//
// logger.info("doPost status: " + status);
// logger.info("doPost result: " + result);
*/
2. 调用doPost或doGet方法请求URL
/**
* 请求url
* @param param 对接字段封装对象
* @return map - status 返回状态 1-失败 0-成功 Integer
* @return map - result 失败原因
* */
public static HashMap<String, Object> dispatchUrl(Object param)
// TODO Auto-generated method stub
String url = Constants.API_URL;
//请求参数
Map<String,Object> param = new HashMap<String,Object>();
param.put("key", "XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXX");
param.put("user","test");
param.put("method", "testMethod");
param.put("data", param);
logger.info("JSON.toJSONString(param): " + JSON.toJSONString(param));
HashMap<String,Object> returnMap = new HashMap<String, Object>();
//处理返回结果
returnMap = HttpClientUtil.doPost(url, param, "UTF-8");
String responseResult = (String)returnMap.get("result");
Integer status = (Integer)returnMap.get("status");
logger.info("status: " + status + "; responseResult: " + responseResult);
if(status.equals(1))//后台出错 请求出错
return returnMap;
Integer statusCode = 0;
JSONObject obj = JSONObject.parseObject(responseResult);
statusCode = (Integer)obj.get("statusCode");
//状态码为失败
if(statusCode == null || statusCode.equals(1))
returnMap.put("status", 1);
returnMap.put("result", (String)obj.get("errorMessage"));
return returnMap;
//无responseData
//String dataStr = obj.get("responseData").toString();
return returnMap;
public static String convertStreamToString(InputStream is) throws UnsupportedEncodingException
StringBuilder sb1 = new StringBuilder();
byte[] bytes = new byte[4096];
int size = 0;
try
while ((size = is.read(bytes)) > 0)
String str = new String(bytes, 0, size, "UTF-8");
sb1.append(str);
catch (IOException e)
e.printStackTrace();
finally
try
is.close();
catch (IOException e)
e.printStackTrace();
return sb1.toString();
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