查看字符代码格式和相互转换格式

/**
	 * 描述 : 获取代码字符编码
	 * @param str  
	 * @return
	 * 
	 */
    
    public static  String getEncoding(String str) {
        String encode = "GB2312";
        try {
            if (str.equals(new String(str.getBytes(encode), encode))) {
                String s = encode;
                return s;
            }
        } catch (Exception exception) {
        }
        encode = "ISO-8859-1";
        try {
            if (str.equals(new String(str.getBytes(encode), encode))) {
                String s1 = encode;
                return s1;
            }
        } catch (Exception exception1) {
        }
        encode = "UTF-8";
        try {
            if (str.equals(new String(str.getBytes(encode), encode))) {
                String s2 = encode;
                return s2;
            }
        } catch (Exception exception2) {
        }
        encode = "GBK";
        try {
            if (str.equals(new String(str.getBytes(encode), encode))) {
                String s3 = encode;
                return s3;
            }
        } catch (Exception exception3) {
        }
        return "";
    }

/**
	 * 描述 : GBK字符编号转换为UTF-8
	 * @param gbkStr  
	 * @return
	 * 
	 */
    public static String getUTF8StringFromGBKString(String gbkStr) {  
        try {  
            return new String(getUTF8BytesFromGBKString(gbkStr), "UTF-8");  
        } catch (UnsupportedEncodingException e) {  
            throw new InternalError();  
        }  
    }  
      
    public static byte[] getUTF8BytesFromGBKString(String gbkStr) {  
        int n = gbkStr.length();  
        byte[] utfBytes = new byte[3 * n];  
        int k = 0;  
        for (int i = 0; i < n; i++) {  
            int m = gbkStr.charAt(i);  
            if (m < 128 && m >= 0) {  
                utfBytes[k++] = (byte) m;  
                continue;  
            }  
            utfBytes[k++] = (byte) (0xe0 | (m >> 12));  
            utfBytes[k++] = (byte) (0x80 | ((m >> 6) & 0x3f));  
            utfBytes[k++] = (byte) (0x80 | (m & 0x3f));  
        }  
        if (k < utfBytes.length) {  
            byte[] tmp = new byte[k];  
            System.arraycopy(utfBytes, 0, tmp, 0, k);  
            return tmp;  
        }  
        return utfBytes;  
    }

public static String gb2312ToUtf8(String tempStr) {

		String urlEncode = "";
		try {
			urlEncode = new String(tempStr.getBytes("GB2312"),"UTF-8");
		} catch (UnsupportedEncodingException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

		return urlEncode;

	}