package com.hcs.util;
import org.apache.http.*;
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.StringEntity;
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 java.io.IOException;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/**
* HTTP工具类
*
* @author lwt
* @date 2018/1/8
* @since 0.1.0
*/
public class HttpUtil {
private static final CloseableHttpClient httpclient = HttpClients.createDefault();
/**
* 发送HttpGet请求
* @param url
* @return
*/
public static String sendGet(String url) {
HttpGet httpget = new HttpGet(url);
CloseableHttpResponse response = null;
try {
response = httpclient.execute(httpget);
} catch (IOException e1) {
e1.printStackTrace();
}
String result = null;
try {
HttpEntity entity = response.getEntity();
if (entity != null) {
result = EntityUtils.toString(entity);
}
} catch (ParseException | IOException e) {
e.printStackTrace();
} finally {
try {
response.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return result;
}
/**
* 发送HttpPost请求,参数为map
* @param url
* @param map
* @return
*/
public static String sendPost(String url, Map<String, String> map) {
List<NameValuePair> formparams = new ArrayList<NameValuePair>();
for (Map.Entry<String, String> entry : map.entrySet()) {
formparams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
}
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formparams, Consts.UTF_8);
HttpPost httppost = new HttpPost(url);
httppost.setEntity(entity);
CloseableHttpResponse response = null;
try {
response = httpclient.execute(httppost);
} catch (IOException e) {
e.printStackTrace();
}
HttpEntity entity1 = response.getEntity();
String result = null;
try {
result = EntityUtils.toString(entity1);
} catch (ParseException | IOException e) {
e.printStackTrace();
}
return result;
}
/**
* 发送HTTP post请求 参数为String
* @param url url地址
* @param para 参数
* @return
*/
public static String sendPost(String url,String para){
HttpPost httpPost = new HttpPost(url);
httpPost.setHeader("Content-Type", "application/json; charset=UTF-8");
StringEntity stringEntity = new StringEntity(para, Charset.forName("UTF-8"));
stringEntity.setContentEncoding("UTF-8");
stringEntity.setContentType("application/json");
httpPost.setEntity(stringEntity);
try {
HttpResponse httpResponse = httpclient.execute(httpPost);
String response = EntityUtils.toString(httpResponse.getEntity(), "UTF-8");
return response;
} catch (IOException e) {
e.printStackTrace();
} finally {
httpPost.releaseConnection();
}
return null;
}
/**
* 发送不带参数的HttpPost请求
* @param url
* @return
*/
public static String sendPost(String url) {
HttpPost httppost = new HttpPost(url);
CloseableHttpResponse response = null;
try {
response = httpclient.execute(httppost);
} catch (IOException e) {
e.printStackTrace();
}
HttpEntity entity = response.getEntity();
String result = null;
try {
result = EntityUtils.toString(entity);
} catch (ParseException | IOException e) {
e.printStackTrace();
}
return result;
}
}
JAVA http工具类
猜你喜欢
转载自blog.csdn.net/u013767488/article/details/81200503
今日推荐
周排行