src/main/java/me/codeboy/common/base/security/CBMd5Sha.java
public static String sha(String text) {
        if (text == null) {
            return null;
        }
        if (text.length() == 0) {
            return "";
        }
        try {
            md2.update(text.getBytes("UTF8"));
            return hex(md2.digest());
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
public static String sha(String text) {
        if (text == null) {
            return null;
        }
        if (text.length() == 0) {
            return "";
        }
        try {
            md2.update(text.getBytes("UTF8"));
            return hex(md2.digest());
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
sha加密 此处对text进行反向，对结果再次反向

@param text
输入字 串
@return sha编 后 字 串