java发送http的get、post请求
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package com.ruanwei.tool;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.DataOutputStream;import java.io.IOException;import java.io.InputStreamReader;import java.net.HttpURLConnection;import java.net.URL;/** * <p> * <date>2012-03-01</date><br/> * * <span>----------基础访问方法-------------</span> * </p> * * @author LIP * @version 1.0.1 */public class SmsClientAccessTool {private static SmsClientAccessTool smsClientToolInstance;/** * 采用单列方式来访问操作 * * @return */public static synchronized SmsClientAccessTool getInstance() {if (smsClientToolInstance == null) {smsClientToolInstance = new SmsClientAccessTool();}return smsClientToolInstance;}/** * <p> * POST方法 * </p> * * @param sendUrl * ：访问URL * @param paramStr * ：参数串 * @param backEncodType * ：返回的编码 * @return */public String doAccessHTTPPost(String sendUrl, String sendParam,String backEncodType) {StringBuffer receive = new StringBuffer();BufferedWriter wr = null;try {if (backEncodType == null || backEncodType.equals("")) {backEncodType = "UTF-8";}URL url = new URL(sendUrl);HttpURLConnection URLConn = (HttpURLConnection) url.openConnection();URLConn.setDoOutput(true);URLConn.setDoInput(true);((HttpURLConnection) URLConn).setRequestMethod("POST");URLConn.setUseCaches(false);URLConn.setAllowUserInteraction(true);HttpURLConnection.setFollowRedirects(true);URLConn.setInstanceFollowRedirects(true);URLConn.setRequestProperty("Content-Type","application/x-www-form-urlencoded;charset=UTF-8");URLConn.setRequestProperty("Content-Length", String.valueOf(sendParam.getBytes().length));DataOutputStream dos = new DataOutputStream(URLConn.getOutputStream());dos.writeBytes(sendParam);BufferedReader rd = new BufferedReader(new InputStreamReader(URLConn.getInputStream(), backEncodType));String line;while ((line = rd.readLine()) != null) {receive.append(line).append("\r\n");}rd.close();} catch (java.io.IOException e) {receive.append("访问产生了异常-->").append(e.getMessage());e.printStackTrace();} finally {if (wr != null) {try {wr.close();} catch (IOException ex) {ex.printStackTrace();}wr = null;}}return receive.toString();}public String doAccessHTTPGet(String sendUrl, String backEncodType) {StringBuffer receive = new StringBuffer();BufferedReader in = null;try {if (backEncodType == null || backEncodType.equals("")) {backEncodType = "UTF-8";}URL url = new URL(sendUrl);HttpURLConnection URLConn = (HttpURLConnection) url.openConnection();URLConn.setDoInput(true);URLConn.setDoOutput(true);URLConn.connect();URLConn.getOutputStream().flush();in = new BufferedReader(new InputStreamReader(URLConn.getInputStream(), backEncodType));String line;while ((line = in.readLine()) != null) {receive.append(line).append("\r\n");}} catch (IOException e) {receive.append("访问产生了异常-->").append(e.getMessage());e.printStackTrace();} finally {if (in != null) {try {in.close();} catch (java.io.IOException ex) {ex.printStackTrace();}in = null;}}return receive.toString();}}调用： SmsClientAccessTool.getInstance().doAccessHTTPPost(url,sendParam.toString(), "UTF-8");
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