获取文件的编码类型(转载)

更改文件的编码，要利用第三方jar包：cpdetector_1.0.10.jar，其中它依赖于jar包：antlr-2.7.4.jar，chardet-1.0.jar，jargs-1.0.jar，

注：jar的下载地址为：http://download.csdn.net/detail/kuangfengbuyi/4658378

获取文件的编码：

 1 public static String guessEncoding(String filePath) {
 2         CharsetPrinter cp = new CharsetPrinter();
 3         try {
 4             String encode = cp.guessEncoding(new File(filePath));
 5             // System.out.println(encode);
 6             return encode;
 7         } catch (MalformedURLException e) {
 8             // TODO Auto-generated catch block
 9             e.printStackTrace();
10         } catch (IOException e) {
11             // TODO Auto-generated catch block
12             e.printStackTrace();
13         }
14         return null;
15     }

根据指定的编码方式读取文件的内容：

 1 public static String read(String filePath,String encode) {
 2         String content = "";
 3         try {
 4             BufferedReader br = new BufferedReader(new InputStreamReader(
 5                     new FileInputStream(filePath),encode));
 6             String str = "";
 7             while ((str = br.readLine()) != null) {
 8                 content += str + "\n";
 9             }
10             br.close();
11         } catch (UnsupportedEncodingException e) {
12             // TODO Auto-generated catch block
13             e.printStackTrace();
14         } catch (FileNotFoundException e) {
15             // TODO Auto-generated catch block
16             e.printStackTrace();
17         } catch (IOException e) {
18             // TODO Auto-generated catch block
19             e.printStackTrace();
20         }
21         // System.out.println(content);
22         return content;
23     }

以指定的编码写入文件：

 1 public static void write(String filePath, String encode, String content) {
 2         try {
 3             //FileInputStream fis = new FileInputStream(filePath);
 4             Writer out = new BufferedWriter(new OutputStreamWriter(
 5                     new FileOutputStream(filePath), encode));
 6             out.write(content);
 7             // System.out.println(content);
 8             out.close();
 9         } catch (UnsupportedEncodingException e) {
10             // TODO Auto-generated catch block
11             e.printStackTrace();
12         } catch (FileNotFoundException e) {
13             // TODO Auto-generated catch block
14             e.printStackTrace();
15         } catch (IOException e) {
16             // TODO Auto-generated catch block
17             e.printStackTrace();
18         }
19     }