import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;
public class HttpRequest {
public static String sendGet(String url, String param) {
String result = "";
BufferedReader in = null;
try {
String urlNameString = url + "?" + param;
URL realUrl = new URL(urlNameString);
//Open the connection between and URL
URLConnection connection = realUrl.openConnection();
//Sets the generic request properties
connection.setRequestProperty("accept", "*/*");
connection.setRequestProperty("connection", "Keep-Alive");
connection.setRequestProperty("user-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
//Establish the actual connection
connection.connect();
//Gets all the response header fields
/*
* Map<String, List<String>> map = connection.getHeaderFields(); //
* Traverses all response header fields for (String key : map.keySet()) {
* System.out.println(key + "--->" + map.get(key)); }
*/
//Define a BufferedReader input stream to read the response to the URL
in = new BufferedReader(new InputStreamReader(
connection.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
System.out.println(" send GET Request exception! " + e);
e.printStackTrace();
}
//Use a finally block to close the input stream
finally {
try {
if (in != null) {
in.close();
}
} catch (Exception e2) {
e2.printStackTrace();
}
}
return result;
}
public static String sendPost(String url, String param) {
PrintWriter out = null;
BufferedReader in = null;
String result = "";
try {
URL realUrl = new URL(url);
//Open the connection between and URL
URLConnection conn = realUrl.openConnection();
//Sets the generic request properties
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
//The following two lines must be set to send the POST request
conn.setDoOutput(true);
conn.setDoInput(true);
//Gets the output stream corresponding to the URLConnection object
out = new PrintWriter(conn.getOutputStream());
//Send request parameters
out.print(param);
//Flush the buffer of the output stream
out.flush();
//Define a BufferedReader input stream to read the response to the URL
in = new BufferedReader(
new InputStreamReader(conn.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
System.out.println(" send POST Request exception! " + e);
e.printStackTrace();
}
//Use a finally block to close the output stream, the input stream
finally {
try {
if (out != null) {
out.close();
}
if (in != null) {
in.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
return result;
}
}