在同一个类中
需要导入以下的包：
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
1 @Test
2 public void e() throws MalformedURLException, IOException{
3 System.out.println(testgetCharset());
4 }
5 public String testgetCharset() throws MalformedURLException, IOException{
6 /**
7 * 获取一个网页的编码形式
8 *
9 * @param url
10 */
11 String host="proxy3.bj.petrochina";
12 String port="8080";
13 setProxy(host,port);
14 String url="http://www.songtaste.com";
15 URLConnection uc = new URL(url).openConnection();
16 uc.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows XP; DigExt)");
17
18 InputStream is = uc.getInputStream();
19 BufferedReader br = new BufferedReader(new InputStreamReader(is));
20 String str = new String();
21 String temp = null;
22 int i = 0;
23 while ((temp = br.readLine()) != null)
24 {
25 str += temp;
26 if (temp.length()>6 && temp.substring(0, 6).equals("<body>"))
27 break;
28 if (++i > 50)
29 break;
30 }
31 br.close();
32
33 //比较等于charset，然后找出charset的值
34 for (i=0; i<str.length()-7; i++)
35 {
36 if (str.substring(i, i+7).equalsIgnoreCase("charset"))
37 {
38 i = i+7;
39 break;
40 }
41 }
42 int begin = 0;
43 while (true)
44 {
45 if (i >= str.length())
46 return new String();
47 char c = str.charAt(i);
48 if (c!=‘ ‘ && c!=‘=‘)
49 {
50 if (begin == 0)
51 begin = i;
52 if (c == ‘"‘)
53 return str.substring(begin, i);
54 }
55 i++;
56 }
57 }
58
59 public static void setProxy(String host, String port) {
60 System.setProperty("proxySet", "true");
61 System.setProperty("proxyHost", host);
62 System.setProperty("proxyPort", port);
63 }
时间： 2024-08-15 21:12:26