package cn.gooday.util;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
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.util.EntityUtils;
import org.apache.log4j.Logger;
public class HttpUtil
{
private static Logger log = Logger.getLogger(HttpUtil.class);
public static String REQ_ENCODING = "UTF-8";
/**
* 发送get请求
*
*/
public static String sendGet(String url, String param)
{
String result = "";
BufferedReader in = null;
try
{
String urlNameString = url + "&" + param;
URL realUrl = new URL(urlNameString);
// 打开和URL之间的连接
URLConnection connection = realUrl.openConnection();
// 设置通用的请求属性
connection.setRequestProperty("accept", "*/*");
connection.setRequestProperty("connection", "Keep-Alive");
connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 建立实际的连接
connection.connect();
// 获取所有响应头字段
Map<String, List<String>> map = connection.getHeaderFields();
// 遍历所有的响应头字段
for (String key : map.keySet())
{
System.out.println(key + "--->" + map.get(key));
}
// 定义 BufferedReader输入流来读取URL的响应
in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String line;
while ((line = in.readLine()) != null)
{
result += line;
}
}
catch (Exception e)
{
System.out.println("发送GET请求出现异常!" + e);
e.printStackTrace();
}
// 使用finally块来关闭输入流
finally
{
try
{
if (in != null)
{
in.close();
}
}
catch (Exception e2)
{
e2.printStackTrace();
}
}
return result;
}
/**
* POST 请求方法 body参数
*
* @param url
* @param data json字符串
* @param headerMap httpheader参数
* @return
* @throws IOException
*/
public static String postBodyMultipart(String url, String data, HashMap<String, String> headerMap)
throws IOException
{
if (log.isDebugEnabled())
{
log.error("url=[" + url + "]");
}
CloseableHttpClient httpClient = HttpClients.createDefault();
HttpPost httpPost = new HttpPost(url);
for (Map.Entry<String, String> entry : headerMap.entrySet())
{
httpPost.setHeader(entry.getKey(), entry.getValue());
}
StringEntity stringEntity = new StringEntity(data, REQ_ENCODING);
stringEntity.setContentEncoding(REQ_ENCODING);
stringEntity.setContentType("application/json");
httpPost.setEntity(stringEntity);
CloseableHttpResponse response = httpClient.execute(httpPost);
try
{
HttpEntity entity = response.getEntity();
String resBody = EntityUtils.toString(entity, REQ_ENCODING);
EntityUtils.consume(entity);
log.error("返回的报文信息:" + resBody);
return resBody;
}
finally
{
response.close();
}
}
}