java UTF8ToGB2312

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方便以后直接使用

    public String UTF8ToGB2312(String str){        String utf8 = null;        String gb2312 = null;        String unicode = null;        StringBuffer result = new StringBuffer();        try {                utf8 = new String(str.getBytes( "UTF-8"));                  Log.d(TAG, "String utf8 =" + utf8);                  unicode = new String(utf8.getBytes(),"UTF-8");                   Log.d(TAG, "String unicode =" + unicode);                  gb2312 = new String(unicode.getBytes("GB2312"));                  Log.d(TAG, "String gb2312 =" + gb2312);              }        catch(Exception e){}        try {        byte[] bytes = unicode.getBytes("gb2312");        int length = unicode.getBytes("gb2312").length;            Log.d(TAG, "length="+length);            for(int i=0; i<length; i++){                Log.d(TAG, "bytes["+i+"]="+bytes[i]);                //int data = (buffer[i] >= 0) ? buffer[i] : (256+buffer[i]);                String hex = Integer.toHexString(bytes[i] & 0xFF);                if (hex.length() == 1) {                    hex = "0" + hex;                }                result.append(hex.toUpperCase());            }        } catch (Exception e) {}        Log.d(TAG, "result.toString()="+result.toString());         return result.toString();    }

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