java 发送http请求

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package test.main;import test.entity.HttpRespons;import test.util.HttpRequester;public class test {      public static void main(String[] args) {          try {              HttpRequester request = new HttpRequester();              String urlNameString = "https://www.baidu.com/?tn=98012088_5_dg&ch=16";            HttpRespons hr = request.sendGet(urlNameString);              //请求链接            System.out.println(hr.getUrlString());              //协议类型            System.out.println(hr.getProtocol());              System.out.println(hr.getHost());              System.out.println(hr.getPort());              //编码格式            System.out.println(hr.getContentEncoding());              System.out.println(hr.getMethod());              //返回响应内容            System.out.println(hr.getContent());          } catch (Exception e) {              e.printStackTrace();          }      }  }

package test.entity;import java.util.Vector;/**  * 响应对象  */  public class HttpRespons {  public String urlString;      public int defaultPort;      public String file;      public String host;      public String path;      public int port;      public String protocol;      public String query;      public String ref;      public String userInfo;      public String contentEncoding;      public String content;      public String contentType;      public int code;      public String message;      public String method;      public int connectTimeout;      public int readTimeout;      public Vector<String> contentCollection;      public String getContent() {          return content;      }      public String getContentType() {          return contentType;      }      public int getCode() {          return code;      }      public String getMessage() {          return message;      }      public Vector<String> getContentCollection() {          return contentCollection;      }      public String getContentEncoding() {          return contentEncoding;      }      public String getMethod() {          return method;      }      public int getConnectTimeout() {          return connectTimeout;      }      public int getReadTimeout() {          return readTimeout;      }      public String getUrlString() {          return urlString;      }      public int getDefaultPort() {          return defaultPort;      }      public String getFile() {          return file;      }      public String getHost() {          return host;      }      public String getPath() {          return path;      }      public int getPort() {          return port;      }      public String getProtocol() {          return protocol;      }      public String getQuery() {          return query;      }      public String getRef() {          return ref;      }      public String getUserInfo() {          return userInfo;      }  }

package test.util;import java.io.BufferedReader;  import java.io.IOException;  import java.io.InputStream;  import java.io.InputStreamReader;  import java.net.HttpURLConnection;  import java.net.URL;  import java.nio.charset.Charset;  import java.util.Map;  import java.util.Vector;  import test.entity.HttpRespons;/**  * HTTP请求对象  *   * @author YYmmiinngg  */  public class HttpRequester {      private String defaultContentEncoding;      public HttpRequester() {          this.defaultContentEncoding = Charset.defaultCharset().name();      }      /**      * 发送GET请求      *       * @param urlString      *            URL地址      * @return 响应对象      * @throws IOException      */      public HttpRespons sendGet(String urlString) throws IOException {          return this.send(urlString, "GET", null, null);      }      /**      * 发送GET请求      *       * @param urlString      *            URL地址      * @param params      *            参数集合      * @return 响应对象      * @throws IOException      */      public HttpRespons sendGet(String urlString, Map<String, String> params)              throws IOException {          return this.send(urlString, "GET", params, null);      }      /**      * 发送GET请求      *       * @param urlString      *            URL地址      * @param params      *            参数集合      * @param propertys      *            请求属性      * @return 响应对象      * @throws IOException      */      public HttpRespons sendGet(String urlString, Map<String, String> params,              Map<String, String> propertys) throws IOException {          return this.send(urlString, "GET", params, propertys);      }      /**      * 发送POST请求      *       * @param urlString      *            URL地址      * @return 响应对象      * @throws IOException      */      public HttpRespons sendPost(String urlString) throws IOException {          return this.send(urlString, "POST", null, null);      }      /**      * 发送POST请求      *       * @param urlString      *            URL地址      * @param params      *            参数集合      * @return 响应对象      * @throws IOException      */      public HttpRespons sendPost(String urlString, Map<String, String> params)              throws IOException {          return this.send(urlString, "POST", params, null);      }      /**      * 发送POST请求      *       * @param urlString      *            URL地址      * @param params      *            参数集合      * @param propertys      *            请求属性      * @return 响应对象      * @throws IOException      */      public HttpRespons sendPost(String urlString, Map<String, String> params,              Map<String, String> propertys) throws IOException {          return this.send(urlString, "POST", params, propertys);      }      /**      * 发送HTTP请求      *       * @param urlString      * @return 响映对象      * @throws IOException      */      private HttpRespons send(String urlString, String method,              Map<String, String> parameters, Map<String, String> propertys)              throws IOException {          HttpURLConnection urlConnection = null;          if (method.equalsIgnoreCase("GET") && parameters != null) {              StringBuffer param = new StringBuffer();              int i = 0;              for (String key : parameters.keySet()) {                  if (i == 0)                      param.append("?");                  else                      param.append("&");                  param.append(key).append("=").append(parameters.get(key));                  i++;              }              urlString += param;          }          URL url = new URL(urlString);          urlConnection = (HttpURLConnection) url.openConnection();          urlConnection.setRequestMethod(method);          urlConnection.setDoOutput(true);          urlConnection.setDoInput(true);          urlConnection.setUseCaches(false);          if (propertys != null)              for (String key : propertys.keySet()) {                  urlConnection.addRequestProperty(key, propertys.get(key));              }          if (method.equalsIgnoreCase("POST") && parameters != null) {              StringBuffer param = new StringBuffer();              for (String key : parameters.keySet()) {                  param.append("&");                  param.append(key).append("=").append(parameters.get(key));              }              urlConnection.getOutputStream().write(param.toString().getBytes());              urlConnection.getOutputStream().flush();              urlConnection.getOutputStream().close();          }          return this.makeContent(urlString, urlConnection);      }      /**      * 得到响应对象      *       * @param urlConnection      * @return 响应对象      * @throws IOException      */      private HttpRespons makeContent(String urlString,              HttpURLConnection urlConnection) throws IOException {          HttpRespons httpResponser = new HttpRespons();          try {              InputStream in = urlConnection.getInputStream();              BufferedReader bufferedReader = new BufferedReader(                      new InputStreamReader(in));              httpResponser.contentCollection = new Vector<String>();              StringBuffer temp = new StringBuffer();              String line = bufferedReader.readLine();              while (line != null) {                  httpResponser.contentCollection.add(line);                  temp.append(line).append("\r\n");                  line = bufferedReader.readLine();              }              bufferedReader.close();              String ecod = urlConnection.getContentEncoding();              if (ecod == null)                  ecod = this.defaultContentEncoding;              httpResponser.urlString = urlString;              httpResponser.defaultPort = urlConnection.getURL().getDefaultPort();              httpResponser.file = urlConnection.getURL().getFile();              httpResponser.host = urlConnection.getURL().getHost();              httpResponser.path = urlConnection.getURL().getPath();              httpResponser.port = urlConnection.getURL().getPort();              httpResponser.protocol = urlConnection.getURL().getProtocol();              httpResponser.query = urlConnection.getURL().getQuery();              httpResponser.ref = urlConnection.getURL().getRef();              httpResponser.userInfo = urlConnection.getURL().getUserInfo();              httpResponser.content = new String(temp.toString().getBytes(), ecod);              httpResponser.contentEncoding = ecod;              httpResponser.code = urlConnection.getResponseCode();              httpResponser.message = urlConnection.getResponseMessage();              httpResponser.contentType = urlConnection.getContentType();              httpResponser.method = urlConnection.getRequestMethod();              httpResponser.connectTimeout = urlConnection.getConnectTimeout();              httpResponser.readTimeout = urlConnection.getReadTimeout();              return httpResponser;          } catch (IOException e) {              throw e;          } finally {              if (urlConnection != null)                  urlConnection.disconnect();          }      }      /**      * 默认的响应字符集      */      public String getDefaultContentEncoding() {          return this.defaultContentEncoding;      }      /**      * 设置默认的响应字符集      */      public void setDefaultContentEncoding(String defaultContentEncoding) {          this.defaultContentEncoding = defaultContentEncoding;      }  }

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