DebugValidator.java
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上传日期:2019-07-07
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- /*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- package validators;
- import java.io.InputStream;
- import java.io.IOException;
- import javax.servlet.jsp.tagext.PageData;
- import javax.servlet.jsp.tagext.TagLibraryValidator;
- import javax.servlet.jsp.tagext.ValidationMessage;
- /**
- * Example tag library validator that simply dumps the XML version of each
- * page to standard output (which will typically be sent to the file
- * <code>$CATALINA_HOME/logs/catalina.out</code>). To utilize it, simply
- * include a <code>taglib</code> directive for this tag library at the top
- * of your JSP page.
- *
- * @author Craig McClanahan
- * @version $Revision: 466607 $ $Date: 2006-10-21 17:09:50 -0600 (Sat, 21 Oct 2006) $
- */
- public class DebugValidator extends TagLibraryValidator {
- // ----------------------------------------------------- Instance Variables
- // --------------------------------------------------------- Public Methods
- /**
- * Validate a JSP page. This will get invoked once per directive in the
- * JSP page. This method will return <code>null</code> if the page is
- * valid; otherwise the method should return an array of
- * <code>ValidationMessage</code> objects. An array of length zero is
- * also interpreted as no errors.
- *
- * @param prefix The value of the prefix argument in this directive
- * @param uri The value of the URI argument in this directive
- * @param page The page data for this page
- */
- public ValidationMessage[] validate(String prefix, String uri,
- PageData page) {
- System.out.println("---------- Prefix=" + prefix + " URI=" + uri +
- "----------");
- InputStream is = page.getInputStream();
- while (true) {
- try {
- int ch = is.read();
- if (ch < 0)
- break;
- System.out.print((char) ch);
- } catch (IOException e) {
- break;
- }
- }
- System.out.println();
- System.out.println("-----------------------------------------------");
- return (null);
- }
- }