Java中检测字符串的编码格式

 1     public static String getEncoding(String str) {
 2         String encode = "GB2312";
 3         try {
 4             if (str.equals(new String(str.getBytes(encode), encode))) {
 5                 String s = encode;
 6                 return s;
 7             }
 8         } catch (Exception exception) {
 9         }
10         encode = "ISO-8859-1";
11         try {
12             if (str.equals(new String(str.getBytes(encode), encode))) {
13                 String s1 = encode;
14                 return s1;
15             }
16         } catch (Exception exception1) {
17         }
18         encode = "UTF-8";
19         try {
20             if (str.equals(new String(str.getBytes(encode), encode))) {
21                 String s2 = encode;
22                 return s2;
23             }
24         } catch (Exception exception2) {
25         }
26         encode = "GBK";
27         try {
28             if (str.equals(new String(str.getBytes(encode), encode))) {
29                 String s3 = encode;
30                 return s3;
31             }
32         } catch (Exception exception3) {
33         }
34         return "";
35     }