HTTP协议 java post get c传参连接远程数据库

package test;


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.net.URLEncoder;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;


import org.apache.log4j.Logger;


public class HttpTest {


/**
* 连接超时
*/
private static int connectTimeOut = 5000;


/**
* 读取数据超时
*/
private static int readTimeOut = 10000;


/**
* 请求编码
*/
private static String requestEncoding = "GBK";


private static Logger logger = Logger.getLogger(HttpTest.class);




/**
* @return 连接超时(毫秒)
* @see com.hengpeng.common.web.HttpRequestProxy#connectTimeOut
*/
public static int getConnectTimeOut() {
return HttpTest.connectTimeOut;
}


/**
* @return 读取数据超时(毫秒)
* @see com.hengpeng.common.web.HttpRequestProxy#readTimeOut
*/
public static int getReadTimeOut() {
return HttpTest.readTimeOut;
}


/**
* @return 请求编码
* @see com.hengpeng.common.web.HttpRequestProxy#requestEncoding
*/
public static String getRequestEncoding() {
return requestEncoding;
}


/**
* @param connectTimeOut 连接超时(毫秒)
* @see com.hengpeng.common.web.HttpRequestProxy#connectTimeOut
*/
public static void setConnectTimeOut(int connectTimeOut) {
HttpTest.connectTimeOut = connectTimeOut;
}


/**
* @param readTimeOut 读取数据超时(毫秒)
* @see com.hengpeng.common.web.HttpRequestProxy#readTimeOut
*/
public static void setReadTimeOut(int readTimeOut) {
HttpTest.readTimeOut = readTimeOut;
}


/**
* @param requestEncoding 请求编码
* @see com.hengpeng.common.web.HttpRequestProxy#requestEncoding
*/
public static void setRequestEncoding(String requestEncoding) {
HttpTest.requestEncoding = requestEncoding;
}


/**
* <pre>
* 发送带参数的GET的HTTP请求
* </pre>
* 
* @param reqUrl HTTP请求URL
* @param parameters 参数映射表
* @return HTTP响应的字符串
*/
public static String doGet(String reqUrl, Map<?, ?> parameters, String recvEncoding) {
HttpURLConnection url_con = null;
String responseContent = null;
try {
StringBuffer params = new StringBuffer();
for (Iterator<?> iter = parameters.entrySet().iterator(); iter.hasNext();) {
Entry<?, ?> element = (Entry<?, ?>) iter.next();
params.append(element.getKey().toString());
params.append("=");
params.append(URLEncoder.encode(element.getValue().toString(), HttpTest.requestEncoding));
params.append("&");
}


if (params.length() > 0) {
params = params.deleteCharAt(params.length() - 1);
}


URL url = new URL(reqUrl);
url_con = (HttpURLConnection) url.openConnection();
url_con.setRequestMethod("GET");
System.setProperty("sun.net.client.defaultConnectTimeout", String.valueOf(HttpTest.connectTimeOut));// （单位：毫秒）jdk1.4换成这个,连接超时
System.setProperty("sun.net.client.defaultReadTimeout", String.valueOf(HttpTest.readTimeOut)); // （单位：毫秒）jdk1.4换成这个,读操作超时
// url_con.setConnectTimeout(5000);//（单位：毫秒）jdk
// 1.5换成这个,连接超时
// url_con.setReadTimeout(5000);//（单位：毫秒）jdk 1.5换成这个,读操作超时
url_con.setDoOutput(true);
byte[] b = params.toString().getBytes();
url_con.getOutputStream().write(b, 0, b.length);
url_con.getOutputStream().flush();
url_con.getOutputStream().close();


InputStream in = url_con.getInputStream();
BufferedReader rd = new BufferedReader(new InputStreamReader(in, recvEncoding));
String tempLine = rd.readLine();
StringBuffer temp = new StringBuffer();
String crlf = System.getProperty("line.separator");
while (tempLine != null) {
temp.append(tempLine);
temp.append(crlf);
tempLine = rd.readLine();
}
responseContent = temp.toString();
rd.close();
in.close();
}
catch (IOException e) {
logger.error("网络故障", e);
}
finally {
if (url_con != null) {
url_con.disconnect();
}
}


return responseContent;
}


/**
* <pre>
* 发送不带参数的GET的HTTP请求
* </pre>
* 
* @param reqUrl HTTP请求URL
* @return HTTP响应的字符串
*/
public static String doGet(String reqUrl, String recvEncoding) {
HttpURLConnection url_con = null;
String responseContent = null;
try {
StringBuffer params = new StringBuffer();
String queryUrl = reqUrl;
int paramIndex = reqUrl.indexOf("?");


if (paramIndex > 0) {
queryUrl = reqUrl.substring(0, paramIndex);
String parameters = reqUrl.substring(paramIndex + 1, reqUrl.length());
String[] paramArray = parameters.split("&");
for (int i = 0; i < paramArray.length; i++) {
String string = paramArray[i];
int index = string.indexOf("=");
if (index > 0) {
String parameter = string.substring(0, index);
String value = string.substring(index + 1, string.length());
params.append(parameter);
params.append("=");
params.append(URLEncoder.encode(value, HttpTest.requestEncoding));
params.append("&");
}
}


params = params.deleteCharAt(params.length() - 1);
}


URL url = new URL(queryUrl);
url_con = (HttpURLConnection) url.openConnection();
url_con.setRequestMethod("GET");
System.setProperty("sun.net.client.defaultConnectTimeout", String.valueOf(HttpTest.connectTimeOut));// （单位：毫秒）jdk1.4换成这个,连接超时
System.setProperty("sun.net.client.defaultReadTimeout", String.valueOf(HttpTest.readTimeOut)); // （单位：毫秒）jdk1.4换成这个,读操作超时
// url_con.setConnectTimeout(5000);//（单位：毫秒）jdk
// 1.5换成这个,连接超时
// url_con.setReadTimeout(5000);//（单位：毫秒）jdk 1.5换成这个,读操作超时
url_con.setDoOutput(true);
byte[] b = params.toString().getBytes();
url_con.getOutputStream().write(b, 0, b.length);
url_con.getOutputStream().flush();
url_con.getOutputStream().close();
InputStream in = url_con.getInputStream();
BufferedReader rd = new BufferedReader(new InputStreamReader(in, recvEncoding));
String tempLine = rd.readLine();
StringBuffer temp = new StringBuffer();
String crlf = System.getProperty("line.separator");
while (tempLine != null) {
temp.append(tempLine);
temp.append(crlf);
tempLine = rd.readLine();
}
responseContent = temp.toString();
rd.close();
in.close();
}
catch (IOException e) {
logger.error("网络故障", e);
}
finally {
if (url_con != null) {
url_con.disconnect();
}
}


return responseContent;
}


/**
* <pre>
* 发送带参数的POST的HTTP请求
* </pre>
* 
* @param reqUrl HTTP请求URL
* @param parameters 参数映射表
* @return HTTP响应的字符串
*/
public static String doPost(String reqUrl, Map<String, String> parameters, String recvEncoding) {
HttpURLConnection url_con = null;
String responseContent = null;
try {
StringBuffer params = new StringBuffer();
for (Iterator<?> iter = parameters.entrySet().iterator(); iter.hasNext();) {
Entry<?, ?> element = (Entry<?, ?>) iter.next();
params.append(element.getKey().toString());
params.append("=");
params.append(URLEncoder.encode(element.getValue().toString(), HttpTest.requestEncoding));
params.append("&");
}


if (params.length() > 0) {
params = params.deleteCharAt(params.length() - 1);
}


URL url = new URL(reqUrl);
url_con = (HttpURLConnection) url.openConnection();
url_con.setRequestMethod("POST");
System.setProperty("sun.net.client.defaultConnectTimeout", String.valueOf(HttpTest.connectTimeOut));// （单位：毫秒）jdk1.4换成这个,连接超时
System.setProperty("sun.net.client.defaultReadTimeout", String.valueOf(HttpTest.readTimeOut)); // （单位：毫秒）jdk1.4换成这个,读操作超时
// url_con.setConnectTimeout(5000);//（单位：毫秒）jdk
// 1.5换成这个,连接超时
// url_con.setReadTimeout(5000);//（单位：毫秒）jdk 1.5换成这个,读操作超时
url_con.setDoOutput(true);
byte[] b = params.toString().getBytes();
url_con.getOutputStream().write(b, 0, b.length);
url_con.getOutputStream().flush();
url_con.getOutputStream().close();


InputStream in = url_con.getInputStream();
BufferedReader rd = new BufferedReader(new InputStreamReader(in, recvEncoding));
String tempLine = rd.readLine();
StringBuffer tempStr = new StringBuffer();
String crlf = System.getProperty("line.separator");
while (tempLine != null) {
tempStr.append(tempLine);
tempStr.append(crlf);
tempLine = rd.readLine();
}
responseContent = tempStr.toString();
rd.close();
in.close();
}
catch (IOException e) {
logger.error("网络故障", e);
}
finally {
if (url_con != null) {
url_con.disconnect();
}
}
return responseContent;
}







public static void main(String[] args) {




Map<String, String> map = new HashMap<String, String>();
map.put("pwd", "1212");
String temp = HttpTest.doPost("http://192.168.1.128/testtest.php", map, "GBK");
String temp1 = HttpTest.doGet("http://192.168.1.128/testtest.php", map, "GBK");
System.out.println("返回的消息是:" + temp);
System.out.println("返回的消息是:" + temp1);
}


}