请教，使用HttpURLConnection是出现http500 内部服务器错误错误

[wfly0001]

我这么写了一个简单的测试，还是报500的错误，但是其他的网站可以，比如百度,错误如下
java.io.IOException: Server returned HTTP response code: 500 for URL: http://www.dianping.com/beijing
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at Testdianping.main(Testdianping.java:9)
不知道到底该怎么改啊
Java代码
import java.io.*;
import java.net.*;
public class Testdianping {
public static void main(String[] args)
{
try {
URL url = new URL("http://www.dianping.com/beijing");
HttpURLConnection uc = (HttpURLConnection) url.openConnection();
BufferedReader br = new BufferedReader(new InputStreamReader(uc.getInputStream(),"utf-8"));
String str;
while((str = br.readLine()) != null)
{
System.out.println(str);
}
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

import java.io.*;
import java.net.*;
public class Testdianping {
public static void main(String[] args)
{
try {
URL url = new URL("http://www.dianping.com/beijing");
HttpURLConnection uc = (HttpURLConnection) url.openConnection();
BufferedReader br = new BufferedReader(new InputStreamReader(uc.getInputStream(),"utf-8"));
String str;
while((str = br.readLine()) != null)
{
System.out.println(str);
}
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

[dangjing20065141]

500 以上的响应码表明是服务器端异常，是服务器端程序出问题，和你写的程序应该没有关系！

[Sou2012]

UP...

[wfly0001]

自己解决了 谢谢dangjing20065141 我设置了user-agent就可以了 不过速度很慢 我把超时设置为2分钟都不行，不会是我这网速的问题吧，我用ie打开速度还行啊？

[芙蓉石的旋律]

怎样设置user-agent的啊，把代码贴出来

[yghsxdr2009]

conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");