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Java发送GET/POST请求工具类


 

    java发送GET/POST请求工具类

  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;

  /**

  * Java HTTP请求对象 发送GET/POST请求工具类

  */

  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 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 params, Map 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 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 params, Map propertys)

  throws IOException {

  return this.send(urlString, "POST", params, propertys);

  }

  /**

  * 发送HTTP请求

  *

  * @param urlString 地址

  * @param method get/post

  * @param parameters 添加由键值对指定的请求参数

  * @param propertys 添加由键值对指定的一般请求属性

  * @return 响映对象

  * @throws IOException

  */

  private HttpRespons send(String urlString, String method, Map parameters,

  Map 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();

  StringBuffer temp = new StringBuffer();

  String line = bufferedReader.readLine();

  while (line != null) {

  httpResponser.contentCollection.add(line);

  temp.append(line)。append(" ");

  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;

  }

  }