项目中需要生成一个GBK文件，文件中只有一个汉字“元”，其余都是字母或数字。发现这个字出现了乱码，
经测试,只有strTest2不是乱码，其余均是乱码。貌似和发音还有点关系，请问如何才能正确输出一个“元”字？已经在网上试过了好多方法，例如utf-8转unicode，再转GBK，还有new String(strTest1.getBytes("GBK"),"GBK")等等。本工程是utf-8编码。

 1 public class StringTest {
 2 
 3     public static void main(String[] args) {
 4         String strTest1 = "元";
 5         String strTest2 = "和";
 6         String strTest3 = "元元元元元";
 7         String strTest4 = "缘";
 8         try {
 9             stringToFile(strTest1, "d:\\1.txt", "GBK");
10             stringToFile(strTest2, "d:\\2.txt", "GBK");
11             stringToFile(strTest3, "d:\\3.txt", "GBK");
12             stringToFile(strTest4, "d:\\4.txt", "GBK");
13         } catch (Exception e) {
14             // TODO Auto-generated catch block
15             e.printStackTrace();
16         }
17     }
18 
19     public final static boolean stringToFile(String strContent, String strFilePath, String strCoding) {
20         boolean blnResult = false;
21         FileOutputStream fileOutputStream = null; // 文件输出对象
22         Writer writer = null;
23         try {
24             fileOutputStream = new FileOutputStream(strFilePath);
25             if (strCoding == null || strCoding.trim().length() <= 0) {
26                 writer = new OutputStreamWriter(fileOutputStream);
27             } else {
28                 writer = new OutputStreamWriter(fileOutputStream, strCoding);
29             }
30             writer.write(strContent);
31             writer.flush();
32             writer.close();
33             fileOutputStream.close();
34             blnResult = true;
35         } catch (Exception e) {
36         } finally {
37             writer = null;
38             fileOutputStream = null;
39         }
40         return blnResult;
41     }
42 }