HTTPClient4.5.2工具类

方式一:

HttpUtil

package com.weixinsdk.utils;import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.KeyManagementException;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate; import javax.net.ssl.SSLContext; import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.config.RequestConfig;
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.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContextBuilder;
import org.apache.http.util.EntityUtils;
import org.apache.log4j.Logger; public class HttpUtil {private static Logger log &＃61; Logger.getLogger(HttpUtil.class);/*** 发送GET请求* &＃64;param isHttps* 是否https* &＃64;param url* 请求地址* &＃64;return 响应结果*/public static String doGet(boolean isHttps, String url) {CloseableHttpClient httpClient &＃61; null;try {if (!isHttps) {httpClient &＃61; HttpClients.createDefault();} else {httpClient &＃61; createSSLInsecureClient();}HttpGet httpget &＃61; new HttpGet(url);// HttpGet设置请求头的两种种方式// httpget.addHeader(new BasicHeader("Connection", "Keep-Alive"));httpget.addHeader("Connection", "Keep-Alive");Header[] heads &＃61; httpget.getAllHeaders();for (int i &＃61; 0; i " &＃43; heads[i].getValue());}CloseableHttpResponse response &＃61; httpClient.execute(httpget);// 判断状态行if (response.getStatusLine().getStatusCode() &＃61;&＃61; HttpStatus.SC_OK) {HttpEntity entity &＃61; response.getEntity();if (entity !&＃61; null) {String out &＃61; EntityUtils.toString(entity, "UTF-8");return out;}}} catch (ClientProtocolException e) {e.printStackTrace();return null;} catch (IOException e) {e.printStackTrace();return null;} finally {try {if (null !&＃61; httpClient) {httpClient.close();}} catch (IOException e) {log.error("httpClient.close()异常");}}return null;}/*** 发送POST请求* &＃64;param isHttps* 是否https* &＃64;param url* 请求地址* &＃64;param data* 请求实体内容* &＃64;param contentType* 请求实体内容的类型* &＃64;return 响应结果*/public static String doPost(boolean isHttps, String url, String data, String contentType) {CloseableHttpClient httpClient &＃61; null;try {if (!isHttps) {httpClient &＃61; HttpClients.createDefault();} else {httpClient &＃61; createSSLInsecureClient();}HttpPost httpPost &＃61; new HttpPost(url);// HttpPost设置请求头的两种种方式// httpPost.addHeader(new BasicHeader("Connection", "Keep-Alive"));// httpPost.addHeader("Connection", "Keep-Alive");// UrlEncodedFormEntity处理键值对格式请求参数// List list &＃61; new ArrayList();// new UrlEncodedFormEntity(list, "UTF-8");if (null !&＃61; data) {// StringEntity处理任意格式字符串请求参数StringEntity stringEntity &＃61; new StringEntity(data, "UTF-8");stringEntity.setContentEncoding("UTF-8");if (null !&＃61; contentType) {stringEntity.setContentType(contentType);} else {stringEntity.setContentType("application/json");}httpPost.setEntity(stringEntity);}// 设置请求和传输超时时间RequestConfig requestConfig &＃61; RequestConfig.custom().setSocketTimeout(2000).setConnectTimeout(2000).build();httpPost.setConfig(requestConfig);HttpResponse response &＃61; httpClient.execute(httpPost);if (response.getStatusLine().getStatusCode() &＃61;&＃61; HttpStatus.SC_OK) {HttpEntity entity &＃61; response.getEntity();if (entity !&＃61; null) {String out &＃61; EntityUtils.toString(entity, "UTF-8");return out;}}} catch (UnsupportedEncodingException e) {log.error(e);} catch (ClientProtocolException e) {e.printStackTrace();log.error("连接超时&＃xff1a;" &＃43; url);} catch (IOException e) {e.printStackTrace();log.error("IO异常:" &＃43; url);} finally {try {if (null !&＃61; httpClient) {httpClient.close();}} catch (IOException e) {log.error("httpClient.close()异常");}}return null;}/*** Https请求对象&＃xff0c;信任所有证书* * &＃64;return CloseableHttpClient*/public static CloseableHttpClient createSSLInsecureClient() {try {SSLContext sslContext &＃61; new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {// 信任所有public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException {return true;}}).build();SSLConnectionSocketFactory sslsf &＃61; new SSLConnectionSocketFactory(sslContext);return HttpClients.custom().setSSLSocketFactory(sslsf).build();} catch (KeyManagementException e) {e.printStackTrace();} catch (NoSuchAlgorithmException e) {e.printStackTrace();} catch (KeyStoreException e) {e.printStackTrace();}return HttpClients.createDefault();}/*** * 测试doGet方法,获取access_token* &＃64;param args*/public static void main(String[] args) {String restu &＃61; doGet(true,"https://api.weixin.qq.com/cgi-bin/token?grant_type&＃61;client_credential&appid&＃61;wx6c797fccab90c81f&secret&＃61;fa226e54468b28ece341c2451142ba0d");System.out.println(restu);}
}


方式二:

HTTPClientUtil

package com.weixinsdk.utils;import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.ConnectException;
import java.net.URL;import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;import com.alibaba.fastjson.JSONObject;public class HTTPSUtil {/** * 发起https请求并获取结果 * * &＃64;param requestUrl 请求地址 * &＃64;param requestMethod 请求方式&＃xff08;GET、POST&＃xff09; * &＃64;param outputStr 提交的数据 * &＃64;return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值) */ public static JSONObject httpRequest(String requestUrl, String requestMethod, String outputStr) { JSONObject jsonObject &＃61; null; StringBuffer buffer &＃61; new StringBuffer(); try { // 创建SSLContext对象&＃xff0c;并使用我们指定的信任管理器初始化 TrustManager[] tm &＃61; { new MyX509TrustManager() }; SSLContext sslContext &＃61; SSLContext.getInstance("SSL", "SunJSSE"); sslContext.init(null, tm, new java.security.SecureRandom()); // 从上述SSLContext对象中得到SSLSocketFactory对象 SSLSocketFactory ssf &＃61; sslContext.getSocketFactory(); URL url &＃61; new URL(requestUrl); HttpsURLConnection httpUrlConn &＃61; (HttpsURLConnection) url.openConnection(); httpUrlConn.setSSLSocketFactory(ssf); httpUrlConn.setDoOutput(true); httpUrlConn.setDoInput(true); httpUrlConn.setUseCaches(false); // 设置请求方式&＃xff08;GET/POST&＃xff09; httpUrlConn.setRequestMethod(requestMethod); if ("GET".equalsIgnoreCase(requestMethod)) httpUrlConn.connect(); // 当有数据需要提交时 if (null !&＃61; outputStr) { OutputStream outputStream &＃61; httpUrlConn.getOutputStream(); // 注意编码格式&＃xff0c;防止中文乱码 outputStream.write(outputStr.getBytes("UTF-8")); outputStream.close(); } // 将返回的输入流转换成字符串 InputStream inputStream &＃61; httpUrlConn.getInputStream(); InputStreamReader inputStreamReader &＃61; new InputStreamReader(inputStream, "utf-8"); BufferedReader bufferedReader &＃61; new BufferedReader(inputStreamReader); String str &＃61; null; while ((str &＃61; bufferedReader.readLine()) !&＃61; null) { buffer.append(str); } bufferedReader.close(); inputStreamReader.close(); // 释放资源 inputStream.close(); inputStream &＃61; null; httpUrlConn.disconnect();
// jsonObject &＃61; JSONObject.fromObject(buffer.toString());jsonObject &＃61; (JSONObject) JSONObject.parse(buffer.toString()); } catch (ConnectException ce) { } catch (Exception e) { } return jsonObject; }
}


发送Http请求,返回Json数据进行解析

/*** * fastjson:Http请求Get返回JSONObject* &＃64;param url* &＃64;return*/&＃64;SuppressWarnings("deprecation")public static com.alibaba.fastjson.JSONObject doGetStr(String url) {DefaultHttpClient httpClient &＃61; new DefaultHttpClient();HttpGet httpGet &＃61; new HttpGet(url);com.alibaba.fastjson.JSONObject jsonObject &＃61; null;try {HttpResponse response &＃61; httpClient.execute(httpGet);HttpEntity entity &＃61; response.getEntity();if(entity!&＃61;null){String result &＃61; EntityUtils.toString(entity,"UTF-8");jsonObject &＃61; com.alibaba.fastjson.JSONObject.parseObject(result);}} catch (ClientProtocolException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}return jsonObject;}public static com.alibaba.fastjson.JSONObject doPostStr(String url,String outStr) {DefaultHttpClient httpClient &＃61; new DefaultHttpClient();HttpPost httpPost &＃61; new HttpPost(url);com.alibaba.fastjson.JSONObject jsonObject &＃61; null;httpPost.setEntity(new StringEntity(outStr, "UTF-8"));try {HttpResponse response &＃61; httpClient.execute(httpPost);HttpEntity entity &＃61; response.getEntity();if(entity!&＃61;null){String result &＃61; EntityUtils.toString(entity, "UTF-8");jsonObject &＃61; com.alibaba.fastjson.JSONObject.parseObject(result);}} catch (ClientProtocolException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}return jsonObject;}/*** * Json-lib:Http请求Get返回JSONObject* &＃64;param url 请求的url地址* &＃64;return*/&＃64;SuppressWarnings("deprecation")public static JSONObject doGetStr2(String url) {DefaultHttpClient httpClient &＃61; new DefaultHttpClient();HttpGet httpGet &＃61; new HttpGet(url);JSONObject jsonObject &＃61; null;try {HttpResponse response &＃61; httpClient.execute(httpGet);HttpEntity entity &＃61; response.getEntity();if(entity!&＃61;null){String result &＃61; EntityUtils.toString(entity,"UTF-8");jsonObject &＃61; JSONObject.fromObject(result);}} catch (ClientProtocolException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}return jsonObject;}/*** 使用json-lib的JSONObject实现HttpClient请求,获取JSONObject对象* &＃64;param url 请求的url地址* &＃64;param outStr 请求的参数* &＃64;return*/public static JSONObject doPostStr2(String url,String outStr) {DefaultHttpClient httpClient &＃61; new DefaultHttpClient();HttpPost httpPost &＃61; new HttpPost(url);JSONObject jsonObject &＃61; null;httpPost.setEntity(new StringEntity(outStr, "UTF-8"));try {HttpResponse response &＃61; httpClient.execute(httpPost);HttpEntity entity &＃61; response.getEntity();if(entity!&＃61;null){String result &＃61; EntityUtils.toString(entity, "UTF-8");jsonObject &＃61; JSONObject.fromObject(result);}} catch (ClientProtocolException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}return jsonObject;}