myutil.java

解觖java技术中后台无法上传数给的情况

     * Get the String with a slash character '/' before the locale name
     * @param localeName the user's preferred locale
     * @return the String with a slash character '/' before the locale name if
     *         this locale is configed to support it. Otherwise,
     *         an empty String will be return
     */
    public static String getLocaleNameAndSlash(String localeName) {
        if ( (localeName == null) || (localeName.length() == 0) ) {
            return "";
        }

        String retValue = "";
        String[] supportedLocales = MVNForumConfig.getSupportedLocaleNames();

        if (supportedLocales == null) {
            log.error("Assertion in MyUtil.getLocaleNameAndSlash. Please check your configuration.");
            return "";
        }

        for (int i = 0; i < supportedLocales.length; i++) {
            if (localeName.equals(supportedLocales[i])) {
                retValue = "/" + localeName;
                break;
            }
        }
        return retValue;
    }

    public static String getCompanyCssPath(CompanyBean companyBean, String contextPath) {
        String cssPath = null;
        if (companyBean.getCompanyCss().length() > 0) {
            cssPath = companyBean.getCompanyCss();
        } else {
            // use default company css
            cssPath = MVNForumGlobal.COMPANY_DEFAULT_CSS_PATH;
        }
        return contextPath + cssPath;
    }

    public static String getCompanyLogoPath(CompanyBean companyBean, String contextPath) {
        String logoPath = null;
        if (companyBean.getCompanyLogo().length() > 0) {
            logoPath = companyBean.getCompanyLogo();
        } else {
            // use default company logo
            logoPath = MVNForumGlobal.COMPANY_DEFAULT_LOGO_PATH;
        }
        return contextPath + logoPath;
    }

    /**
     * Get the locale from locale name
     * @param localeName : in this format la_CO_VA, eg. en_US
     * @return the locale instance of the localeName
     */
    public static Locale getLocale(String localeName) {
        // now, find out the 3 elements of a locale: language, country, variant
        String[] localeElement = StringUtil.getStringArray(localeName, "_");
        String language = "";
        String country = "";
        String variant = "";
        if (localeElement.length >= 1) {
            language = localeElement[0];
        }
        if (localeElement.length >= 2) {
            country = localeElement[1];
        }
        if (localeElement.length >= 3) {
            variant = localeElement[2];
        }
        return new Locale(language, country, variant);
    }

    public static void ensureCorrectCurrentPassword(GenericRequest request)
        throws BadInputException, AssertionException, DatabaseException, AuthenticationException {

        if (request.isServletRequest()) {
            ensureCorrectCurrentPassword(request.getServletRequest());
        } else {
            //@todo implement later
            //throw new IllegalStateException("Not implemented.");
        }
    }

    public static void ensureCorrectCurrentPassword(HttpServletRequest request)
        throws BadInputException, AssertionException, DatabaseException, AuthenticationException {

        OnlineUser onlineUser = OnlineUserManager.getInstance().getOnlineUser(request);
        OnlineUserFactory onlineUserFactory = ManagerFactory.getOnlineUserFactory();

        try {
            if (onlineUser.getAuthenticationType() == OnlineUser.AUTHENTICATION_TYPE_REALM) {
                onlineUserFactory.ensureCorrectPassword(onlineUser.getMemberName(), OnlineUserManager.PASSWORD_OF_METHOD_REALM, true);
            } else if (onlineUser.getAuthenticationType() == OnlineUser.AUTHENTICATION_TYPE_CUSTOMIZATION) {
                if(MVNForumConfig.getEnablePasswordlessAuth()) {
                    // dont need password
                    onlineUserFactory.ensureCorrectPassword(onlineUser.getMemberName(), OnlineUserManager.PASSWORD_OF_METHOD_CUSTOMIZATION, true);
                } else {
                    // must have password
                    // @todo: implement this case by using Authenticator
                    onlineUserFactory.ensureCorrectPassword(onlineUser.getMemberName(), OnlineUserManager.PASSWORD_OF_METHOD_CUSTOMIZATION, true);
                }
            } else {
                //This user did not login by REALM or CUSTOMIZATION
                String memberPassword = "";
                String memberPasswordMD5 = ParamUtil.getParameter(request, "md5pw", false);
                if (memberPasswordMD5.length() == 0 || (memberPasswordMD5.endsWith("==") == false)) {
                    // md5 is not valid, try to use unencoded password method
                    memberPassword = ParamUtil.getParameterPassword(request, "MemberCurrentMatkhau", 3, 0);

                    if (memberPassword.length() == 0) {
                        throw new AssertionException("Cannot allow memberPassword's length is 0. Serious Assertion Failed.");
                    }
                }

                // Please note that below code ONLY CORRECT when the ParamUtil.getParameterPassword
                // return a NON-EMPTY string
                if (memberPassword.length() > 0) {
                    // that is we cannot find the md5 password
                    onlineUserFactory.ensureCorrectPassword(onlineUser.getMemberName(), memberPassword, false);
                } else {
                    // have the md5, go ahead
                    onlineUserFactory.ensureCorrectPassword(onlineUser.getMemberName(), memberPasswordMD5, true);
                }
            }
        } catch (AuthenticationException e) {
            Locale locale = I18nUtil.getLocaleInRequest(request);
            String localizedMessage = MVNForumResourceBundle.getString(locale, "mvncore.exception.BadInputException.wrong_password");
            throw new BadInputException(localizedMessage);
            //throw new BadInputException("You have typed the wrong password. Cannot proceed.");
        }
    }

    public static void writeMvnForumImage(HttpServletRequest request, HttpServletResponse response) throws IOException {

        BufferedImage image = MVNForumInfo.getImage();
        OutputStream outputStream = null;
        try {
            outputStream = response.getOutputStream();
            response.setContentType("image/jpeg");

            JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(outputStream);
            encoder.encode(image);

            outputStream.flush();
        } catch (IOException ex) {
            throw ex;
        } finally {
            if (outputStream != null) {
                try {
                    outputStream.close();
                } catch (IOException ex) { }
            }
        }
    }

    public static void writeMvnCoreImage(HttpServletRequest request, HttpServletResponse response) throws IOException {

        BufferedImage image = MVNCoreInfo.getImage();
        OutputStream outputStream = null;
        try {
            outputStream = response.getOutputStream();
            response.setContentType("image/jpeg");

            JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(outputStream);
            encoder.encode(image);

            outputStream.flush();
        } catch (IOException ex) {
            throw ex;
        } finally {
            if (outputStream != null) {
                try {
                    outputStream.close();
                } catch (IOException ex) { }
            }
        }
    }

    public static void checkClassName(Locale locale, String className, boolean required) throws BadInputException {
        if (required == false) {
            if (className.length() == 0) return;
        }

        try {
            Class.forName(className);
        } catch (ClassNotFoundException ex) {
            throw new BadInputException("Cannot load class: " + className);
        }
    }

    public static void saveVNTyperMode(GenericRequest request, GenericResponse response) {

        if (request.isServletRequest()) {
            saveVNTyperMode(request.getServletRequest(), response.getServletResponse());
        }
    }

    public static void saveVNTyperMode(HttpServletRequest request, HttpServletResponse response) {

        String vnTyperMode = ParamUtil.getParameter(request, "vnselector");
        if (vnTyperMode.equals("VNI") || vnTyperMode.equals("TELEX") ||
            vnTyperMode.equals("VIQR") || vnTyperMode.equals("NOVN")) {
            Cookie typerModeCookie = new Cookie(MVNForumConstant.VN_TYPER_MODE, vnTyperMode);
            typerModeCookie.setPath("/");
            response.addCookie(typerModeCookie);
        }
    }

    // note that this method can check for duplicate but difference in case: Admin,admin,ADMIN
    public static Hashtable checkMembers(String[] memberNames, Locale locale)
        throws AssertionException, DatabaseException, BadInputException {

        Hashtable memberMap = new Hashtable();
        boolean isFailed = false;
        StringBuffer missingNames = new StringBuffer(512);

        for (int i = 0; i < memberNames.length; i++) {
            int receivedMemberID = -1;
            String memberName = memberNames[i];
            StringUtil.checkGoodName(memberName);
            try {
                receivedMemberID = DAOFactory.getMemberDAO().getMemberIDFromMemberName(memberName);
            } catch (ObjectNotFoundException ex) {
                isFailed = true;
                if (missingNames.length() > 0) {
                    missingNames.append(", ");
                }
                missingNames.append(memberName);
                continue;
            }
            memberMap.put(new Integer(receivedMemberID), memberName);
        } // end for

        if (isFailed) { // the receivers does not exist.
            String localizedMessage = MVNForumResourceBundle.getString(locale, "mvncore.exception.BadInputException.receivers_are_not_members", new Object[] {missingNames});
            throw new BadInputException(localizedMessage);
        }
        return memberMap;
    }
    
    /**
     * Check if the online user is Root Admin
     */
    public static boolean isRootAdmin(GenericRequest request) throws AuthenticationException, AssertionException, DatabaseException {
        return ( OnlineUserManager.getInstance().getOnlineUser(request).getMemberID() == MVNForumConstant.MEMBER_ID_OF_ADMIN);
    }

    /**
     * Check if the online user is Root Admin
     */
    public static boolean isRootAdmin(HttpServletRequest request) throws AuthenticationException, AssertionException, DatabaseException {
        return ( OnlineUserManager.getInstance().getOnlineUser(request).getMemberID() == MVNForumConstant.MEMBER_ID_OF_ADMIN );
    }

    /**
     * check if memberID belongs to admin's id
     */
    public static boolean isRootAdminID(int memberID) {
        return (memberID == MVNForumConstant.MEMBER_ID_OF_ADMIN);
    }

    public static String getRowCSS(int rowIndex) {
        return (rowIndex%2 == 0 ? CSS_ROW_BODY : CSS_ROW_ALTERNATE);
    }
    
//    public static void checkInstance(String className, Class clazz) throws BadInputException {
//        try {
//            Class.forName(className);
//            throw new BadInputException("Class " + className + " is not a implementation of " + clazz);
//        } catch (ClassNotFoundException e) {
//            e.printStackTrace();
//            throw new BadInputException("Cannot load class " + className);
//        }
//    } 
}