JavaがHTTPリクエストを開始
4362 ワード
package cn.cityworks.utils;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;
//cn.cityworks.domain.MyLog
public class HttpRequest {
/**
* URL GET
*
* @param url
* URL
* @param param
* , name1=value1&name2=value2 。
* @return URL
*/
public static String sendGet(String url, String param) {
String result = "";
BufferedReader in = null;
try {
String urlNameString = url + "?" + param;
URL realUrl = new URL(urlNameString);
// URL
URLConnection connection = realUrl.openConnection();
//
connection.setRequestProperty("accept", "*/*");
connection.setRequestProperty("connection", "Keep-Alive");
connection.setRequestProperty("user-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
//setConnectTimeout: ( : )
connection.setConnectTimeout(2000);//2
//setReadTimeout: ( : )
//connection.setReadTimeout(2000);
//
connection.connect();
//
Map> map = connection.getHeaderFields();
//
// for (String key : map.keySet()) {
// System.out.println(key + "--->" + map.get(key));
// }
// BufferedReader URL
in = new BufferedReader(new InputStreamReader(
connection.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
System.out.println(" GET !" + e);
e.printStackTrace();
}
// finally
finally {
try {
if (in != null) {
in.close();
}
} catch (Exception e2) {
e2.printStackTrace();
}
}
return result;
}
/**
* URL POST
*
* @param url
* URL
* @param param
* , name1=value1&name2=value2 。
* @return
*/
public static String sendPost(String url, String param) {
PrintWriter out = null;
BufferedReader in = null;
String result = "";
try {
URL realUrl = new URL(url);
// URL
URLConnection conn = realUrl.openConnection();
//
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// POST
conn.setDoOutput(true);
conn.setDoInput(true);
// URLConnection
out = new PrintWriter(conn.getOutputStream());
//
out.print(param);
// flush
out.flush();
// BufferedReader URL
in = new BufferedReader(
new InputStreamReader(conn.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
System.out.println(" POST !"+e);
e.printStackTrace();
}
// finally 、
finally{
try{
if(out!=null){
out.close();
}
if(in!=null){
in.close();
}
}
catch(IOException ex){
ex.printStackTrace();
}
}
return result;
}
}