Java StringUtils.trimToNull方法代碼示例

import org.apache.commons.lang.StringUtils; //導入方法依賴的package包/類
/**
* 加密
* @param datasource byte[]
* @param password String
* @return byte[]
*/
public static String encrypt(String datasource, String password) {
	try {
		if(StringUtils.trimToNull(datasource) == null){
			return null;
		}
		SecureRandom random = new SecureRandom();
		DESKeySpec desKey = new DESKeySpec(password.getBytes());
		// 創建一個密匙工廠，然後用它把DESKeySpec轉換成
		SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
		SecretKey securekey = keyFactory.generateSecret(desKey);
		// Cipher對象實際完成加密操作
		Cipher cipher = Cipher.getInstance("DES");
		// 用密匙初始化Cipher對象
		cipher.init(Cipher.ENCRYPT_MODE, securekey, random);
		// 現在，獲取數據並加密
		// 正式執行加密操作
		 return new BASE64Encoder().encode(cipher.doFinal(datasource.getBytes()));
		
	} catch (Throwable e) {
		e.printStackTrace();
	}
	return null;
}
 

import org.apache.commons.lang.StringUtils; //導入方法依賴的package包/類
/**
 * Parses the given string as a HTTP header byte range.  See chapter 14.36.1 in RFC 2068
 * for details.
 * <p/>
 * Only a subset of the allowed syntaxes are supported. Only ranges which specify first-byte-pos
 * are supported. The last-byte-pos is optional.
 *
 * @param range The range from the HTTP header, for instance "bytes=0-499" or "bytes=500-"
 * @return A range object (using inclusive values). If the last-byte-pos is not given, the end of
 *         the returned range is {@code null}. The method returns <code>null</code> if the syntax
 *         of the given range is not supported.
 */
public static HttpRange valueOf(String range) {
    if (range == null) {
        return null;
    }

    Matcher matcher = PATTERN.matcher(range);
    if (matcher.matches()) {
        String firstString = matcher.group(1);
        String lastString = StringUtils.trimToNull(matcher.group(2));

        Long first = Long.parseLong(firstString);
        Long last = lastString == null ? null : Long.parseLong(lastString);

        if (last != null && first > last) {
            return null;
        }
        return new HttpRange(first, last);
    }
    return null;
}
 

import org.apache.commons.lang.StringUtils; //導入方法依賴的package包/類
private String getITunesAttribute(Element element, String childName, String attributeName) {
    for (Namespace ns : ITUNES_NAMESPACES) {
        Element elem = element.getChild(childName, ns);
        if (elem != null) {
            return StringUtils.trimToNull(elem.getAttributeValue(attributeName));
        }
    }
    return null;
}
 

import org.apache.commons.lang.StringUtils; //導入方法依賴的package包/類
private LyricsInfo parseSearchResult(String xml) throws Exception {
    SAXBuilder builder = new SAXBuilder();
    Document document = builder.build(new StringReader(xml));

    Element root = document.getRootElement();
    Namespace ns = root.getNamespace();

    String lyric = StringUtils.trimToNull(root.getChildText("Lyric", ns));
    String song =  root.getChildText("LyricSong", ns);
    String artist =  root.getChildText("LyricArtist", ns);

    return new LyricsInfo(lyric, artist, song);
}
 

import org.apache.commons.lang.StringUtils; //導入方法依賴的package包/類
private String processWikiText(String text) {
    /*
     System of a Down is an Armenian American <a href="http://www.last.fm/tag/alternative%20metal" class="bbcode_tag" rel="tag">alternative metal</a> band,
     formed in 1994 in Los Angeles, California, USA. All four members are of Armenian descent, and are widely known for their outspoken views expressed in
     many of their songs confronting the Armenian Genocide of 1915 by the Ottoman Empire and the ongoing War on Terror by the US government. The band
     consists of <a href="http://www.last.fm/music/Serj+Tankian" class="bbcode_artist">Serj Tankian</a> (vocals), Daron Malakian (vocals, guitar),
     Shavo Odadjian (bass, vocals) and John Dolmayan (drums).
     <a href="http://www.last.fm/music/System+of+a+Down">Read more about System of a Down on Last.fm</a>.
     User-contributed text is available under the Creative Commons By-SA License and may also be available under the GNU FDL.
     */

    text = text.replaceAll("User-contributed text.*", "");
    text = text.replaceAll("<a ", "<a target='_blank' ");
    text = text.replace("\n", " ");
    text = StringUtils.trimToNull(text);

    if (text != null && text.startsWith("This is an incorrect tag")) {
        return null;
    }

    return text;
}
 

import org.apache.commons.lang.StringUtils; //導入方法依賴的package包/類
/**
 * creates a playlist name that is <= 150 characters and is unique
 * 
 * @param playlistName the name of the playlist
 * @return the safe playlist name
 * @throws IllegalArgumentException if playlist name is invalid
 */
@NoProfile
protected String makeSafePlaylistName(String playlistName) {
    playlistName = StringUtils.trimToNull(playlistName);
    if (playlistName == null) {
        throw new IllegalArgumentException("playlistName cannot be null");
    }
    if (playlistName.length() > PLAYLIST_MAX_LENGTH) {
        playlistName = StringUtils.abbreviate(playlistName, CATEGORY_MAX_LENGTH);
        playlistName = playlistName.substring(0, CATEGORY_MAX_LENGTH-3) + RandomStringUtils.randomAlphanumeric(3);
    }
    return playlistName;
}
 

import org.apache.commons.lang.StringUtils; //導入方法依賴的package包/類
public void index(Map<String, Object> context) {
    final String service = StringUtils.trimToNull((String) context.get("service"));
    
    List<LoadBalance> loadbalances;
    if (service != null && service.length() > 0) {
        loadbalances = OverrideUtils.overridesToLoadBalances(overrideService.findByService(service));
        
        loadbalances = OverrideUtils.overridesToLoadBalances(overrideService.findByService(service));
    } else {
        loadbalances = OverrideUtils.overridesToLoadBalances(overrideService.findAll());
    }
    context.put("loadbalances", loadbalances);
}
 

import org.apache.commons.lang.StringUtils; //導入方法依賴的package包/類
public void index(Map<String, Object> context) {
    final String service = StringUtils.trimToNull((String) context.get("service"));
    String address = (String) context.get("address");
    address = Tool.getIP(address);
    List<Weight> weights;
    if (service != null && service.length() > 0) {
        weights = OverrideUtils.overridesToWeights(overrideService.findByService(service));
    } else if (address != null && address.length() > 0) {
        weights = OverrideUtils.overridesToWeights(overrideService.findByAddress(address));
    } else {
        weights = OverrideUtils.overridesToWeights(overrideService.findAll());
    }
    context.put("weights", weights);
}
 

import org.apache.commons.lang.StringUtils; //導入方法依賴的package包/類
/**
 * @param appId  微信公眾號應用ID
 * @param openId 微信用戶身份唯一標識
 * @param state  商品或訂單ID
 * @param attach 附加信息
 * @return 微信支付 -- JS_API模式
 * @throws Exception 可能產生的任何異常
 */
@RequestMapping(value = "/jsapi/{app_id}", method = {Type.HttpMethod.GET, Type.HttpMethod.POST})
public IView __doJsApi(@PathVariable("app_id") String appId,
                       @VRequried @RequestParam("open_id") String openId,
                       @VRequried @RequestParam String state,
                       @RequestParam String attach,
                       @RequestParam boolean debug) throws Exception {
    IWxPayEventHandler _eventHandler = WxPay.get().getModuleCfg().getEventHandler();
    if (_eventHandler != null) {
        WxPayAccountMeta _meta = WxPay.get().getModuleCfg().getAccountProvider().getAccount(appId);
        if (_meta != null) {
            WxPayUnifiedOrder _request = _eventHandler.buildUnifiedOrderRequest(_meta, IWxPay.TradeType.JSAPI, state, attach).openId(openId);
            WxPayUnifiedOrder.Response _response = _request.execute();
            //
            if (_response.checkReturnCode() && _response.checkResultCode() && (WxPay.get().getModuleCfg().isSignCheckDisabled() || _response.checkSignature(_meta.getMchKey()))) {
                // 封裝JSAPI初始化相關參數
                String _queryStr = StringUtils.trimToNull(WebContext.getRequest().getQueryString());
                String _currentURL = WebUtils.buildURL(WebContext.getRequest(), "payment/wxpay/jsapi/" + appId + (_queryStr == null ? "" : "?" + _queryStr), true);
                //
                String _timestamp = DateTimeUtils.currentTimeUTC() + "";
                String _nonceStr = WxPayBaseData.__doCreateNonceStr();
                String _config = __buildJsApiConfigStr(_meta.getAppId(), _eventHandler.getJsApiTicket(_meta.getAppId()), StringUtils.substringBefore(_currentURL, "#"), _timestamp, _nonceStr, debug);
                // 封裝基於JSAPI的支付調用相關參數
                Map<String, Object> _paramMap = new HashMap<String, Object>();
                _paramMap.put("appId", _meta.getAppId());
                _paramMap.put("timeStamp", _timestamp);
                _paramMap.put("nonceStr", _nonceStr);
                _paramMap.put("package", "prepay_id=" + _response.prepayId());
                _paramMap.put("signType", IWxPay.Const.SIGN_TYPE_MD5);
                _paramMap.put("paySign", WxPayBaseData.__doCreateSignature(_paramMap, _meta.getMchKey()));
                //
                return View.jspView(WxPay.get().getModuleCfg().getJsApiView())
                        .addAttribute("_config", _config)
                        .addAttribute("_data", _paramMap)
                        .addAttribute("_trade_no", state);
            }
        }
    }
    return HttpStatusView.bind(HttpServletResponse.SC_BAD_REQUEST);
}
 

import org.apache.commons.lang.StringUtils; //導入方法依賴的package包/類
/**
 * Reads the player ID from the cookie in the HTTP request.
 *
 * @param request  The HTTP request.
 * @param username The name of the current user.
 * @return The player ID embedded in the cookie, or <code>null</code> if cookie is not present.
 */
private String getPlayerIdFromCookie(HttpServletRequest request, String username) {
    Cookie[] cookies = request.getCookies();
    if (cookies == null) {
        return null;
    }
    String cookieName = COOKIE_NAME + "-" + StringUtil.utf8HexEncode(username);
    for (Cookie cookie : cookies) {
        if (cookieName.equals(cookie.getName())) {
            return StringUtils.trimToNull(cookie.getValue());
        }
    }
    return null;
}
 

import org.apache.commons.lang.StringUtils; //導入方法依賴的package包/類
/**
    * @return long value of paramValue
    * @exception IllegalArgumentException
    *                - if (a) not set and is not optional or (b) not long
    */
   public static Long checkLong(String paramName, String paramValue, boolean isOptional)
    throws IllegalArgumentException {
try {
    if (!isOptional) {
	WebUtil.checkObject(paramName, paramValue);
    }
    String value = paramValue != null ? StringUtils.trimToNull(paramValue) : null;
    return value != null ? new Long(value) : null;

} catch (NumberFormatException e) {
    throw new IllegalArgumentException(paramName + " should be a long '" + paramValue + "'");
}
   }
 

import org.apache.commons.lang.StringUtils; //導入方法依賴的package包/類
private void handleParameters(HttpServletRequest request) {
    boolean dlnaEnabled = ServletRequestUtils.getBooleanParameter(request, "dlnaEnabled", false);
    String dlnaServerName = StringUtils.trimToNull(request.getParameter("dlnaServerName"));
    String dlnaBaseLANURL = StringUtils.trimToNull(request.getParameter("dlnaBaseLANURL"));
    if (dlnaServerName == null) {
        dlnaServerName = "Airsonic";
    }

    upnpService.setMediaServerEnabled(false);
    settingsService.setDlnaEnabled(dlnaEnabled);
    settingsService.setDlnaServerName(dlnaServerName);
    settingsService.setDlnaBaseLANURL(dlnaBaseLANURL);
    settingsService.save();
    upnpService.setMediaServerEnabled(dlnaEnabled);
}
 

import org.apache.commons.lang.StringUtils; //導入方法依賴的package包/類
@RequestMapping(method = RequestMethod.POST)
protected String onSubmit(HttpServletRequest request, HttpServletResponse response,@ModelAttribute("command") SearchCommand command, Model model)
        throws Exception {

    User user = securityService.getCurrentUser(request);
    UserSettings userSettings = settingsService.getUserSettings(user.getUsername());
    command.setUser(user);
    command.setPartyModeEnabled(userSettings.isPartyModeEnabled());

    List<MusicFolder> musicFolders = settingsService.getMusicFoldersForUser(user.getUsername());
    String query = StringUtils.trimToNull(command.getQuery());

    if (query != null) {

        SearchCriteria criteria = new SearchCriteria();
        criteria.setCount(MATCH_COUNT);
        criteria.setQuery(query);

        SearchResult artists = searchService.search(criteria, musicFolders, SearchService.IndexType.ARTIST);
        command.setArtists(artists.getMediaFiles());

        SearchResult albums = searchService.search(criteria, musicFolders, SearchService.IndexType.ALBUM);
        command.setAlbums(albums.getMediaFiles());

        SearchResult songs = searchService.search(criteria, musicFolders, SearchService.IndexType.SONG);
        command.setSongs(songs.getMediaFiles());

        command.setPlayer(playerService.getPlayer(request, response));
    }

    return "search";
}
 

import org.apache.commons.lang.StringUtils; //導入方法依賴的package包/類
private void handleParameters(HttpServletRequest request) {
    boolean sonosEnabled = ServletRequestUtils.getBooleanParameter(request, "sonosEnabled", false);
    String sonosServiceName = StringUtils.trimToNull(request.getParameter("sonosServiceName"));
    if (sonosServiceName == null) {
        sonosServiceName = "Airsonic";
    }

    settingsService.setSonosEnabled(sonosEnabled);
    settingsService.setSonosServiceName(sonosServiceName);
    settingsService.save();

    sonosService.setMusicServiceEnabled(false, NetworkService.getBaseUrl(request));
    sonosService.setMusicServiceEnabled(sonosEnabled, NetworkService.getBaseUrl(request));
}
 

import org.apache.commons.lang.StringUtils; //導入方法依賴的package包/類
public DefaultModuleCfg(YMP owner) {
    Map<String, String> _moduleCfgs = owner.getConfig().getModuleConfigs(IWxPay.MODULE_NAME);
    //
    __accountProvider = ClassUtils.impl(_moduleCfgs.get("account_provider_class"), IWxPayAccountProvider.class, getClass());
    if (__accountProvider == null) {
        __accountProvider = new DefaultWxPayAccountProvider();
        //
        WxPayAccountMeta _meta = new WxPayAccountMeta(_moduleCfgs.get("app_id"),
                _moduleCfgs.get(IWxPay.Const.MCH_ID),
                _moduleCfgs.get(IWxPay.Const.MCH_KEY),
                _moduleCfgs.get("cert_file_path"),
                _moduleCfgs.get(IWxPay.Const.NOTIFY_URL));
        _meta.setSandboxEnabled(BlurObject.bind(_moduleCfgs.get("sandbox_enabled")).toBooleanValue());
        _meta.setSandboxPrefix(StringUtils.defaultIfBlank(_moduleCfgs.get("sandbox_prefix"), "sandboxnew"));
        //
        __defaultAccountId = _meta.getAppId();
        __accountProvider.registerAccount(_meta);
    } else {
        __defaultAccountId = StringUtils.trimToNull(_moduleCfgs.get("default_account_id"));
    }
    //
    __eventHandler = ClassUtils.impl(_moduleCfgs.get("event_handler_class"), IWxPayEventHandler.class, getClass());
    if (__eventHandler == null) {
        throw new NullArgumentException("event_handler_class");
    }
    //
    __jsApiView = StringUtils.defaultIfBlank(_moduleCfgs.get("jsapi_view"), "wxpay_jsapi");
    __nativeView = StringUtils.defaultIfBlank(_moduleCfgs.get("native_view"), "wxpay_native");
    //
    __signCheckDisabled = BlurObject.bind(_moduleCfgs.get("sign_check_disabled")).toBooleanValue();
}