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Tomcat example source code file (DefaultErrorHandler.java)

This example Tomcat source code file (DefaultErrorHandler.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Tomcat tags/keywords

defaulterrorhandler, errorhandler, exception, exception, jasperexception, jasperexception, object, object, string, stringbuffer, stringbuffer

The Tomcat DefaultErrorHandler.java source code

/*
 * 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 org.apache.jasper.compiler;

import org.apache.jasper.JasperException;

/**
 * Default implementation of ErrorHandler interface.
 *
 * @author Jan Luehe
 */
class DefaultErrorHandler implements ErrorHandler {
    
    /*
     * Processes the given JSP parse error.
     *
     * @param fname Name of the JSP file in which the parse error occurred
     * @param line Parse error line number
     * @param column Parse error column number
     * @param errMsg Parse error message
     * @param exception Parse exception
     */
    public void jspError(String fname, int line, int column, String errMsg,
            Exception ex) throws JasperException {
        throw new JasperException(fname + "(" + line + "," + column + ")"
                + " " + errMsg, ex);
    }
    
    /*
     * Processes the given JSP parse error.
     *
     * @param errMsg Parse error message
     * @param exception Parse exception
     */
    public void jspError(String errMsg, Exception ex) throws JasperException {
        throw new JasperException(errMsg, ex);
    }
    
    /*
     * Processes the given javac compilation errors.
     *
     * @param details Array of JavacErrorDetail instances corresponding to the
     * compilation errors
     */
    public void javacError(JavacErrorDetail[] details) throws JasperException {
        
        if (details == null) {
            return;
        }
        
        Object[] args = null;
        StringBuffer buf = new StringBuffer();
        
        for (int i=0; i < details.length; i++) {
            if (details[i].getJspBeginLineNumber() >= 0) {
                args = new Object[] {
                        new Integer(details[i].getJspBeginLineNumber()), 
                        details[i].getJspFileName() };
                buf.append("\n\n");
                buf.append(Localizer.getMessage("jsp.error.single.line.number",
                        args));
                buf.append("\n");
                buf.append(details[i].getErrorMessage());
                buf.append("\n");
                buf.append(details[i].getJspExtract());
            } else {
                args = new Object[] {
                        new Integer(details[i].getJavaLineNumber()) };
                buf.append("\n\n");
                buf.append(Localizer.getMessage("jsp.error.java.line.number",
                        args));
                buf.append("\n");
                buf.append(details[i].getErrorMessage());
            }
        }
        buf.append("\n\nStacktrace:");
        throw new JasperException(
                Localizer.getMessage("jsp.error.unable.compile") + ": " + buf);
    }
    
    /**
     * Processes the given javac error report and exception.
     *
     * @param errorReport Compilation error report
     * @param exception Compilation exception
     */
    public void javacError(String errorReport, Exception exception)
    throws JasperException {
        
        throw new JasperException(
                Localizer.getMessage("jsp.error.unable.compile"), exception);
    }
    
}

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