请问：如何在urlconnection中加入用户名和密码？

[xiaomaju]

我写一段程序，用urlconnection抓取一个网页，但是这个网页需要用户名和密码验证，请问应该如何在urlconnection中加入用户名和密码？同时请问，如何得到并保存服务器返回的session？谢谢！

源程序如下：

import java.net.*;
import java.io.*;
import java.util.*;

public class URLClient {
protected URLConnection connection=null;
public URLClient() {
}
public static void main(String[] args) {
URLClient URLClient1 = new URLClient();
String context=URLClient1.getDocumentAT("http://gs.dlut.edu.cn");
System.out.print(context);
}
public String getDocumentAT(String urlString){
StringBuffer document=new StringBuffer();
try {
URL url = new URL(urlString);
URLConnection conn = url.openConnection();
BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line = null;
while ( (line = reader.readLine()) != null) {
document.append(line + "\n");
}
reader.close();
}
catch (IOException ex) {
}
return document.toString();
}
}

[pastelife]

concerning..

[xiaomaju]

请问应该如何做呢？给出详细的代码好么？谢谢！

[flywind63]

在try块中的URLConnection conn = url.openConnection();后面加上下列语句:
String username = 网页的用户名
String password = 用户名的密码
String input = username + ":" + password;
String encoding = new sun.misc.BASE64Encoder().encode(input.getBytes());
connection.setRequestProperty("Authorization", "Basic " + encoding);
connection.connect();

[ecaol]

up

[xiaomaju]

各位大侠，该网页的验证是普通的表单验证，不是你们所说的弹出式对话框验证，请问该如何解决？比如在http://www.chinaren.com中如何直接进入到指定的班级主页抓取它？

[westwin]

继承Authenticator类,然后Authenticator.setDefault().当HttpURLConnection请求的页面需要进行authorization时会自动调用这个类

[westwin]

sorry,没看清楚,那就post表单啊

[hl_longman]

UP

[stonecsdn]

URL url = new URL("");
URLConnection connection = url.openConnection();

connection.setDoOutput(true);

out.print(name1 + "=" + URLEncoder.encode(value1) + "&");
out.print(name2 + "=" + URLEncoder.encode(value2));

BufferedReader in = new BufferedReader(new
InputStreamReader(connection.getInputStream()));
String line;
while ((line = in.readLine()) != null)
{

;
}