HttpClient例子

来源：互联网发布：冒泡排序算法java 编辑：程序博客网时间：2024/06/08 06:20

package b.b;

import java.io.File; import java.io.FileInputStream; import java.nio.charset.Charset; import java.security.KeyStore; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map;  import javax.net.ssl.SSLContext;  import org.apache.http.Consts; import org.apache.http.HttpEntity; import org.apache.http.HttpHost; import org.apache.http.NameValuePair; import org.apache.http.client.config.RequestConfig; import org.apache.http.client.config.RequestConfig.Builder; 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.HttpRequestBase; import org.apache.http.client.utils.URLEncodedUtils; import org.apache.http.config.Registry; import org.apache.http.config.RegistryBuilder; import org.apache.http.conn.HttpClientConnectionManager; import org.apache.http.conn.socket.ConnectionSocketFactory; import org.apache.http.conn.ssl.SSLConnectionSocketFactory; import org.apache.http.conn.ssl.TrustSelfSignedStrategy; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClientBuilder; import org.apache.http.impl.client.HttpClients; import org.apache.http.impl.conn.BasicHttpClientConnectionManager; import org.apache.http.impl.conn.PoolingHttpClientConnectionManager; import org.apache.http.message.BasicNameValuePair; import org.apache.http.ssl.SSLContexts; import org.apache.http.util.EntityUtils;  /** * httpclient工具类   * <p>Description: httpclient版本4.4</p>  * <p>Author: desheng.tu</p>  * <p>Date: 2014年3月18日</p>  */ public class HttpUtils {      public static final String USER_AGENT_FIREFOX = "Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.15) Gecko/20110303 Firefox/3.6.15";     public static final String USER_AGENT_CHROME = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.57 Safari/537.36";     public static final String USER_AGENT_IE9 = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0)";     public static final String USER_AGENT_APPLE6 = "Mozilla/5.0 (iPhone; CPU iPhone OS 8_0 like Mac OS X) AppleWebKit/600.1.3 (KHTML, like Gecko) Version/8.0 Mobile/12A4345d Safari/600.1.4";     public static final String USER_AGENT = USER_AGENT_CHROME;   //request config  public static final Integer DEFAULT_CONN_TIMEOUT = 3000;//与主机建立链接的超时时间(毫秒)  public static final Integer DEFAULT_SO_TIMEOUT = 5000;//建立链接后,传输等待超时时间(毫秒)  public static final Integer DEFAULT_CONN_REQ_TIMEOUT = 3000;//向链接池请求链接超时时间(毫秒)   //pooling connect manager config  public static final Integer DEFAULT_CONN_POOL_SIZE = 200;//链接池大小  public static final Integer DEFAULT_MAX_PER_ROUTE = 200;//一个host的最大链接数      public static void main(String[] args) throws Exception {         CloseableHttpClient client = getSSLClient("haogrgr.keystore", "haogrgr");         HttpGet get = new HttpGet("https://kyfw.12306.cn/otn/");         CloseableHttpResponse exec = client.execute(get);         HttpEntity entity = exec.getEntity();         if (entity != null) {             String content = EntityUtils.toString(entity);             System.out.println(content);         }                  client.close();     }      public static CloseableHttpClient getClient() {         return getClient(null);     }      /**     * 获取默认的HttpClient对象      * @param proxy 代理host      * @return      */     public static CloseableHttpClient getClient(HttpHost proxy) {         HttpClientBuilder builder = getClientBuilder(proxy);         return builder.build();     }      public static CloseableHttpClient getThreadSafeClient() {         return getThreadSafeClient(null);     }          /**     * 获取线程安全的HttpClient对象      * @param proxy 代理host      * @return      */     public static CloseableHttpClient getThreadSafeClient(HttpHost proxy) {         PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager();         cm.setMaxTotal(DEFAULT_CONN_POOL_SIZE);         HttpClientBuilder builder = getClientBuilder(proxy).setConnectionManager(cm);         return builder.build();     }          public static CloseableHttpClient getSSLClient(File keyStoreFile, String pwd){         return getSSLClient(null, false, keyStoreFile, pwd);     }          public static CloseableHttpClient getThreadSafeSSLClient(File keyStoreFile, String pwd){         return getSSLClient(null, true, keyStoreFile, pwd);     }          public static CloseableHttpClient getSSLClient(String keyStoreFile, String pwd){         File stroeFile = getStroeFile(keyStoreFile);         return getSSLClient(null, false, stroeFile, pwd);     }          public static CloseableHttpClient getThreadSafeSSLClient(String keyStoreFile, String pwd){         File stroeFile = getStroeFile(keyStoreFile);         return getSSLClient(null, true, stroeFile, pwd);     }          public static CloseableHttpClient getSSLClient(HttpHost proxy, boolean threadSafe, String keyStoreFile, String pwd) {         File stroeFile = getStroeFile(keyStoreFile);         return getSSLClient(proxy, threadSafe, stroeFile, pwd);     }          /**     * 获取支持Https的HttpClient对象      * @param proxy 代理host      * @param threadSafe 是否使用线程安全的HttpClient      * @param keyStoreFile 信任证书库文件      * @param pwd 证书库密码      * @return      */     public static CloseableHttpClient getSSLClient(HttpHost proxy, boolean threadSafe, File keyStoreFile, String pwd) {         HttpClientBuilder builder = getClientBuilder(proxy);         try {             KeyStore trustStore = getTrustKeyStore(keyStoreFile, pwd);                          SSLContext sslContext = SSLContexts.custom().loadTrustMaterial(trustStore, new TrustSelfSignedStrategy()).build();             SSLConnectionSocketFactory sslConnFactory = new SSLConnectionSocketFactory(sslContext);              RegistryBuilder<ConnectionSocketFactory> registryBuilder = RegistryBuilder.create();             Registry<ConnectionSocketFactory> registry = registryBuilder.register("https", sslConnFactory).build();                          HttpClientConnectionManager cm = null;             if(threadSafe){                 cm = new PoolingHttpClientConnectionManager(registry);                 ((PoolingHttpClientConnectionManager)cm).setMaxTotal(DEFAULT_CONN_POOL_SIZE);             }else{                 cm = new BasicHttpClientConnectionManager(registry);             }              builder.setConnectionManager(cm);         } catch (Exception e) {             throw new RuntimeException("初始化HttpClient实例失败!", e);         }          return builder.build();     }          public static void close(CloseableHttpClient client){         try{             client.close();         }catch(Exception e){             throw new RuntimeException("关闭实例失败", e);         }     }          /**     * 将查询字符串附加到url后面      * @param url url      * @param query 查询字符串      * @return 拼接后的url      */     public static String appendQureyString(String url, String query){         if(isEmpty(url)){             throw new IllegalArgumentException("the argument url is empty");         }         if(isEmpty(query)){             return url;         }         StringBuilder sb = new StringBuilder(url);         if(url.endsWith("?")){             sb.append(query.startsWith("?") ? query.substring(1) : query);         }else{             sb.append("?").append(query.startsWith("?") ? query.substring(1) : query);         }         return sb.toString();     }          /**     * 将参数转换为查询串      * @param paramMap 参数map      * @param charset 编码类型      * @return 例如: key1=value1&key2=value2      */     public static String toUrlEncodeQueryString(Map<String, String> paramMap, String charset){         List <NameValuePair> nvps = fromMap(paramMap);         String query = URLEncodedUtils.format(nvps, charset);         return query;     }          public static String toUrlEncodeQueryString(Map<String, String> paramMap){         return toUrlEncodeQueryString(paramMap, "UTF-8");     }          public static List <NameValuePair> fromMap(Map<String, String> paramMap){         List <NameValuePair> nvps = new ArrayList <NameValuePair>(paramMap.size() + 1);                  for (Map.Entry<String, String> entry : paramMap.entrySet()) {             String key = entry.getKey();             if(key != null && key.trim().length() > 0){                 nvps.add(new BasicNameValuePair(key, entry.getValue()));             }         }                  return nvps;     }          public static Map<String, String> parseQueryString(String queryString, String charset){         List<NameValuePair> nvps = URLEncodedUtils.parse(queryString, Charset.forName(charset));         return toMap(nvps);     }          public static Map<String, String> toMap(List <NameValuePair> nvps){         HashMap<String, String> map = new HashMap<String, String>();                  for (NameValuePair pair : nvps) {             map.put(pair.getName(), pair.getValue());         }                  return map;     }          public static String entityToString(HttpEntity entity){         return entityToString(entity, null);     }          /**     * 将响应实体转换为String      * @param entity 响应实体      * @param charset 字符集      */     public static String entityToString(HttpEntity entity, String charset){         if(entity == null){             return null;         }         try {             String content = null;             if(charset != null){                 content = EntityUtils.toString(entity, charset);             }else{                 content = EntityUtils.toString(entity);             }             return content;         } catch (Exception e) {             throw new RuntimeException("获取响应正文失败", e);         }     }          public static UrlEncodedFormEntity getFromEntity(Map<String, String> paramMap){         List<NameValuePair> nvps = fromMap(paramMap);         UrlEncodedFormEntity entity = new UrlEncodedFormEntity(nvps, Consts.UTF_8);         return entity;     }          public static StringEntity getStringEntity(String content, String charset){         StringEntity entity = new StringEntity(content, charset);         return entity;     }          public static StringEntity getStringEntity(String content){         return getStringEntity(content, Consts.UTF_8.name());     }          public static HttpClientBuilder getClientBuilder() {         return getClientBuilder(null);     }          public static String exec(HttpRequestBase request){      try(CloseableHttpClient client = getClient()){       CloseableHttpResponse response = client.execute(request);       String result = entityToString(response.getEntity());       return result;      }catch(Exception e){       throw new RuntimeException(e);      }     }          /**     * 获取HttpClientBuilder对象,默认UserAgent为chrome      * 默认ConnectTimeout DEFAULT_CONN_TIMEOUT 1000      * 默认SocketTimeout DEFAULT_SO_TIMEOUT 3000      * @param proxy Http代理      * @return      */     public static HttpClientBuilder getClientBuilder(HttpHost proxy) {         HttpClientBuilder builder = HttpClients.custom().setUserAgent(USER_AGENT);         if (proxy != null) {             builder.setProxy(proxy);         }          Builder requestConfigBuilder = RequestConfig.custom();         requestConfigBuilder.setConnectionRequestTimeout(DEFAULT_CONN_REQ_TIMEOUT);         requestConfigBuilder.setConnectTimeout(DEFAULT_CONN_TIMEOUT);         requestConfigBuilder.setSocketTimeout(DEFAULT_SO_TIMEOUT);          builder.setDefaultRequestConfig(requestConfigBuilder.build());                  return builder;     }          /**     * 获取证书库文件      * @param keyStorePath 路径,相当路径(classpath : /keyStorePath),或绝对路径      * @return      */     private static File getStroeFile(String keyStorePath) {         File keyStoreFile = new File(keyStorePath);         if(!keyStoreFile.isAbsolute()){             keyStoreFile = new File(HttpUtils.class.getResource("/").getFile() + keyStorePath);         }         return keyStoreFile;     }          /**     * 导入证书到证书库中:<br>      * keytool -import -alias 12306 -keystore haogrgr.keystore -file c:\tmp\12306.cer<br>      * -keystore haogrgr.keystore 如果不存在haogrgr.keystore则会自动创建改文件      * @param keyStoreFile eg: haogrgr.keystore      * @param pwd 证书库密码      * @return      */     private static KeyStore getTrustKeyStore(File keyStoreFile, String pwd) throws Exception {         KeyStore trustStore = null;         FileInputStream instream = null;         try {             trustStore = KeyStore.getInstance(KeyStore.getDefaultType());             instream = new FileInputStream(keyStoreFile);             trustStore.load(instream, pwd.toCharArray());         } catch (Exception e) {             throw new RuntimeException("加载信任证书库失败!", e);         } finally {             instream.close();         }         return trustStore;     }          private static boolean isEmpty(String str){         return str == null || str.trim().length() == 0;     } }

测试：

package b.b;import java.io.IOException;import java.security.KeyManagementException;import java.security.NoSuchAlgorithmException;import java.security.SecureRandom;import java.security.cert.CertificateException;import java.security.cert.X509Certificate;import java.util.Date;import javax.net.ssl.KeyManager;import javax.net.ssl.SSLContext;import javax.net.ssl.TrustManager;import javax.net.ssl.X509TrustManager;import org.apache.http.HttpEntity;import org.apache.http.HttpHost;import org.apache.http.ParseException;import org.apache.http.client.config.RequestConfig;import org.apache.http.client.config.RequestConfig.Builder;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.config.Registry;import org.apache.http.config.RegistryBuilder;import org.apache.http.conn.ClientConnectionManager;import org.apache.http.conn.HttpClientConnectionManager;import org.apache.http.conn.scheme.Scheme;import org.apache.http.conn.scheme.SchemeRegistry;import org.apache.http.conn.socket.ConnectionSocketFactory;import org.apache.http.conn.ssl.NoopHostnameVerifier;import org.apache.http.conn.ssl.SSLConnectionSocketFactory;import org.apache.http.conn.ssl.SSLSocketFactory;import org.apache.http.entity.StringEntity;import org.apache.http.impl.client.CloseableHttpClient;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.impl.client.HttpClientBuilder;import org.apache.http.impl.client.HttpClients;import org.apache.http.impl.conn.BasicHttpClientConnectionManager;import org.apache.http.util.EntityUtils;public class HTTP {public static final String USER_AGENT_FIREFOX = "Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.15) Gecko/20110303 Firefox/3.6.15";     public static final String USER_AGENT_CHROME = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.57 Safari/537.36";     public static final String USER_AGENT_IE9 = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0)";     public static final String USER_AGENT_APPLE6 = "Mozilla/5.0 (iPhone; CPU iPhone OS 8_0 like Mac OS X) AppleWebKit/600.1.3 (KHTML, like Gecko) Version/8.0 Mobile/12A4345d Safari/600.1.4";     public static final String USER_AGENT = USER_AGENT_CHROME;         //request config     public static final Integer DEFAULT_CONN_TIMEOUT = 30000;//与主机建立链接的超时时间(毫秒)     public static final Integer DEFAULT_SO_TIMEOUT = 50000;//建立链接后,传输等待超时时间(毫秒)     public static final Integer DEFAULT_CONN_REQ_TIMEOUT = 3000;//向链接池请求链接超时时间(毫秒)         //pooling connect manager config     public static final Integer DEFAULT_CONN_POOL_SIZE = 200;//链接池大小     public static final Integer DEFAULT_MAX_PER_ROUTE = 200;//一个host的最大链接数     public static void main(String[] args) throws NoSuchAlgorithmException, KeyManagementException, ParseException, IOException{long time = new Date().getTime();String data = "{\"__app\":\"query2\",\"__type\":\"query2\",\"data\":[{\"__time\":"+time+",\"a1\":\"a1\",\"a2\":\"a1\",\"a3\":\"a1\",\"a4\":\"a1\"},{\"__time\":"+time+",\"a1\":\"b3\",\"a2\":\"a1\",\"a3\":\"a1\",\"a4\":\"a1\"},"+ "{\"__time\":"+time+",\"a1\":\"a3\",\"a2\":\"a1\",\"a3\":\"a1\",\"a4\":\"a1\"},{\"__time\":"+time+",\"a1\":\"b3\",\"a2\":\"a1\",\"a3\":\"a1\",\"a4\":\"a1\"}]}";CloseableHttpClient client = getHttpClient();HttpPost post = new HttpPost("https://192.168.130.240:9001/v2/events"); HttpEntity p = new StringEntity(data,"utf-8");    post.setEntity(p);        CloseableHttpResponse exec = client.execute(post);         HttpEntity entity = exec.getEntity();         if (entity != null) {             String content = EntityUtils.toString(entity);             System.out.println(content);         }                 client.close(); }public static HttpClientBuilder getClientBuilder(HttpHost proxy) {         HttpClientBuilder builder = HttpClients.custom().setUserAgent(USER_AGENT);         if (proxy != null) {             builder.setProxy(proxy);         }          Builder requestConfigBuilder = RequestConfig.custom();         requestConfigBuilder.setConnectionRequestTimeout(DEFAULT_CONN_REQ_TIMEOUT);         requestConfigBuilder.setConnectTimeout(DEFAULT_CONN_TIMEOUT);         requestConfigBuilder.setSocketTimeout(DEFAULT_SO_TIMEOUT);          builder.setDefaultRequestConfig(requestConfigBuilder.build());                  return builder;     } public static CloseableHttpClient getHttpClient() throws KeyManagementException, NoSuchAlgorithmException{SSLContext ctx = SSLContext.getInstance("SSL");X509TrustManager tm = new X509TrustManager(){public void checkClientTrusted(X509Certificate[] chain,String authType) throws CertificateException {// TODO Auto-generated method stub}public void checkServerTrusted(X509Certificate[] chain,String authType) throws CertificateException {// TODO Auto-generated method stub}public X509Certificate[] getAcceptedIssuers() {// TODO Auto-generated method stubreturn null;}};ctx.init( new KeyManager[0], new TrustManager[] {tm}, new SecureRandom());SSLContext.setDefault(ctx);SSLConnectionSocketFactory ssf = new SSLConnectionSocketFactory(ctx,NoopHostnameVerifier.INSTANCE/*.getDefaultHostnameVerifier()*/);RegistryBuilder<ConnectionSocketFactory> registryBuilder = RegistryBuilder.create();         Registry<ConnectionSocketFactory> registry = registryBuilder.register("https", ssf).build(); HttpClientConnectionManager ccm = new BasicHttpClientConnectionManager(registry); HttpClientBuilder builder = getClientBuilder(null); builder.setConnectionManager(ccm);  return builder.build(); }}

<dependency>    <groupId>org.apache.httpcomponents</groupId>    <artifactId>httpclient</artifactId>    <version>4.5.3</version></dependency>

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