get，post请求

package com.xuyw.wx.util;import java.io.BufferedReader;
import java.io.DataOutputStream;import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;/** * Http 简单封装 ** @author xuyw * @email xyw10000@163.com * @date 2012-06-14 */
public class HttpUtil {
// 连接超时时间
private static final int CONNECTION_TIMEOUT = 3000;
//读取超时时间
private static final int READ_TIMEOUT = 5000;
// 参数编码
private static final String ENCODE_CHARSET = "utf-8";
/** * 发送HTTP_POST请求 * * @see 本方法默认的连接和读取超时均为30秒 * @param reqURL *请求地址 * @param params *发送到远程主机的正文数据[a:1,b:2] * @return String */

public static String postRequest(String reqURL, String... params) {
StringBuilder resultData = new StringBuilder();
URL url = null;
try {
url = new URL(reqURL);
}
catch (MalformedURLException e) {
e.printStackTrace();
}
HttpURLConnection urlConn = null;
InputStreamReader in = null;
BufferedReader buffer = null;
String inputLine = null;
DataOutputStream out = null;
if (url != null) {
try {
urlConn = (HttpURLConnection) url.openConnection();
urlConn.setDoInput(true);// 设置输入流采用字节流
urlConn.setDoOutput(true);// 设置输出流采用字节流
urlConn.setRequestMethod("POST");
urlConn.setUseCaches(false); // POST请求不能使用缓存
urlConn.setInstanceFollowRedirects(true);
urlConn.setConnectTimeout(CONNECTION_TIMEOUT);// 设置连接超时
urlConn.setReadTimeout(READ_TIMEOUT); // 设置读取超时
// 配置本次连接的Content-type，配置为application/x-www-form-urlencoded的
urlConn.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
urlConn.setRequestProperty("Charset", ENCODE_CHARSET);//
String param = sendPostParams(params);
urlConn.setRequestProperty("Content-Length",param.getBytes().length + "");//
// urlConn.setRequestProperty("Connection", "Keep-Alive");
// //设置长连接
urlConn.connect();// 连接服务器发送消息
if (!"".equals(param)) {
out = new DataOutputStream(urlConn.getOutputStream());
// 将要上传的内容写入流中
out.writeBytes(param);
// 刷新、关闭
out.flush();
out.close();
}
in = new InputStreamReader(urlConn.getInputStream(),HttpUtil.ENCODE_CHARSET);
buffer = new BufferedReader(in);
if (urlConn.getResponseCode() == 200) { while ((inputLine = buffer.readLine()) != null) {
resultData.append(inputLine);
}
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (buffer != null) {
buffer.close();
}
if (in != null) {
in.close();
}
if (urlConn != null) {
urlConn.disconnect();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
return resultData.toString();
}
/** * 发送HTTP_GET请求 * * @see 本方法默认的连接和读取超时均为30秒 * @param httpUrl *请求地址 * @param map *发送到远程主机的正文数据[a:1,b:2] * @return String */
public static String getRequest(String httpUrl, String... params) {
StringBuilder resultData = new StringBuilder();
URL url = null;
try {
String paramurl = sendGetParams(httpUrl, params);
url = new URL(paramurl);
} catch (MalformedURLException e) {
e.printStackTrace();
}
HttpURLConnection urlConn = null;
InputStreamReader in = null;
BufferedReader buffer = null;
String inputLine = null;
if (url != null) {
try {
urlConn = (HttpURLConnection) url.openConnection();
urlConn.setRequestMethod("GET");
urlConn.setConnectTimeout(CONNECTION_TIMEOUT);
in = new InputStreamReader(urlConn.getInputStream(),
HttpUtil.ENCODE_CHARSET);
buffer = new BufferedReader(in);
if (urlConn.getResponseCode() == 200) {
while ((inputLine = buffer.readLine()) != null) {
resultData.append(inputLine);
}
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (buffer != null) {
buffer.close();
}
if (in != null) {
in.close();
}
if (urlConn != null) {
urlConn.disconnect();

}
} catch (IOException e) {
e.printStackTrace();
}
}
}
return resultData.toString();
}
/** * Post追加参数 * * @see <code>params</code> * @param reqURL *请求地址 * @param params *发送到远程主机的正文数据[a:1,b:2] * @return */
private static String sendPostParams(String... params) {
StringBuilder sbd = new StringBuilder("");
if (params != null && params.length > 0) {
for (int i = 0; i < params.length; i++) {
String[] temp = params[i].split(":");
sbd.append(temp[0]);
sbd.append("=");
sbd.append(urlEncode(temp[1]));
sbd.append("&");
}
sbd.setLength(sbd.length() - 1);// 删掉最后一个
}
return sbd.toString(); }
/** * Get追加参数 * * @see <code>params</code> * @param reqURL *请求地址 * @param params *发送到远程主机的正文数据[a:1,b:2] * @return */
private static String sendGetParams(String reqURL, String... params) {
StringBuilder sbd = new StringBuilder(reqURL);
if (params != null && params.length > 0) {
if (isexist(reqURL, "?")) {// 存在?
sbd.append("&");
} else {
sbd.append("?");
}
for (int i = 0; i < params.length; i++) {
String[] temp = params[i].split(":");
sbd.append(temp[0]);
sbd.append("=");
sbd.append(urlEncode(temp[1]));
sbd.append("&");
}
sbd.setLength(sbd.length() - 1);// 删掉最后一个
}
return sbd.toString(); }
// 查找某个字符串是否存在
private static boolean isexist(String str, String fstr) {
return str.indexOf(fstr) == -1 ? false :
true;
}
/** * 编码 * * @param source * @return */
private static String urlEncode(String source) {
String result = source;
try {
result = java.net.URLEncoder.encode(source, HttpUtil.ENCODE_CHARSET);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return result;
}
}