HttpUtil

package shjt.pay.utils;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.io.UnsupportedEncodingException;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.ProtocolException;import java.net.URL;import java.security.cert.CertificateException;import java.security.cert.X509Certificate;import javax.net.ssl.HostnameVerifier;import javax.net.ssl.HttpsURLConnection;import javax.net.ssl.SSLContext;import javax.net.ssl.SSLSession;import javax.net.ssl.SSLSocketFactory;import javax.net.ssl.TrustManager;import javax.net.ssl.X509TrustManager;public class HttpUtil {public static String callServer(String askUrl,String json){ ???????String str = ""; ???????//是否启用Https ???????boolean useHttps = askUrl.startsWith("https"); ???????if(useHttps){ ???????str = doHttps(askUrl,json); ???????}else{ ???????str = doHttp(askUrl,json); ???????} ??????????????????????????????????????????return str; ??????}public static String doHttp(String askUrl,String json){ ???????StringBuffer sb = new StringBuffer(""); //输出的结果 ???????try { ???????URL url = new URL(askUrl);HttpURLConnection connection = (HttpURLConnection) url.openConnection();connection.setDoOutput(true); ???????????connection.setDoInput(true); ???????????connection.setRequestMethod("POST"); ???????????connection.setUseCaches(false);//不使用缓存 ???????????connection.setInstanceFollowRedirects(true);//自动重定向 ???????????connection.setRequestProperty("connection", "Keep-Alive"); ???????????connection.setRequestProperty("Accept", "application/json"); // 设置接收数据的格式 ???????????connection.setRequestProperty("Content-Type", "application/json"); // 设置发送数据的格式 ???????????//连接 ???????????connection.connect(); ???????????//POST请求 ???????????OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream(),"UTF-8"); ???????????out.write(json); ???????????out.flush(); ???????????out.close(); ???????????//读取响应 ???????????BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(),"UTF-8")); ???????????String lines; ???????????while ((lines = reader.readLine()) != null) { ???????????????lines = new String(lines.getBytes()); ???????????????sb.append(lines); ???????????} ???????????reader.close(); ???????????connection.disconnect();} catch (IOException e) {e.printStackTrace();} ????????return sb.toString();}public static String doHttps(String askUrl,String json){StringBuffer sb = new StringBuffer(""); //输出的结果 ???????try { ???????URL url = new URL(askUrl); ???????HttpsURLConnection ?connection = (HttpsURLConnection ) url.openConnection(); ??????????????????????SSLSocketFactory oldSocketFactory = null; ???????????HostnameVerifier oldHostnameVerifier = null; ???????????oldSocketFactory = trustAllHosts(connection); ???????????oldHostnameVerifier = connection.getHostnameVerifier(); ???????????connection.setHostnameVerifier(DO_NOT_VERIFY); ???????????connection.setDoOutput(true); ???????????connection.setDoInput(true); ???????????connection.setRequestMethod("POST"); ???????????connection.setUseCaches(false);//不使用缓存 ???????????connection.setInstanceFollowRedirects(true);//自动重定向 ???????????connection.setRequestProperty("connection", "Keep-Alive"); ???????????connection.setRequestProperty("Accept", "application/json"); // 设置接收数据的格式 ???????????connection.setRequestProperty("Content-Type", "application/json"); // 设置发送数据的格式 ???????????//连接 ???????????connection.connect(); ???????????//POST请求 ???????????OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream(),"UTF-8"); ???????????out.write(json); ???????????out.flush(); ???????????out.close(); ???????????//读取响应 ???????????BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(),"UTF-8")); ???????????String lines; ???????????while ((lines = reader.readLine()) != null) { ???????????????lines = new String(lines.getBytes()); ???????????????sb.append(lines); ???????????} ???????????reader.close(); ???????????connection.disconnect();} catch (IOException e) {e.printStackTrace();} ????????return sb.toString();}/** * 覆盖java默认的证书验证 */ private static final TrustManager[] trustAllCerts = new TrustManager[]{ new X509TrustManager() { ?public java.security.cert.X509Certificate[] getAcceptedIssuers() { ???????????return new java.security.cert.X509Certificate[]{}; } public void checkClientTrusted(X509Certificate[] chain, String authType)throws CertificateException { ?} public void checkServerTrusted(X509Certificate[] chain, String authType)throws CertificateException { ?} }}; /**  * 设置不验证主机  */ private static final HostnameVerifier DO_NOT_VERIFY = new HostnameVerifier() { ???????public boolean verify(String hostname, SSLSession session) { ???????????return true; ???????} };/**  * 信任所有  * @param connection  * @return*/private static SSLSocketFactory trustAllHosts(HttpsURLConnection connection) {SSLSocketFactory oldFactory = connection.getSSLSocketFactory();try {SSLContext sc = SSLContext.getInstance("TLS");sc.init(null, trustAllCerts, new java.security.SecureRandom());SSLSocketFactory newFactory = sc.getSocketFactory();connection.setSSLSocketFactory(newFactory);} catch (Exception e) { ?????e.printStackTrace();}return oldFactory;}}