Java Throwable to String stacktrace(Logger logger, Throwable ex)

Description

Print the stacktrace for the exception in the logfile.

License

Apache License

Parameter

Parameter	Description
logger	- Logger instance.
ex	- Exception

Declaration

public static void stacktrace(Logger logger, Throwable ex) 

Method Source Code

//package com.java2s;
/**//from  ww w.  j a v  a 2  s .  co m
 * Copyright 2012 Subho Ghosh (subho dot ghosh at outlook dot com)
 * Licensed 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.
 */

import java.io.PrintWriter;
import org.slf4j.Logger;

public class Main {
    /**
     * Print the stacktrace for the exception in the logfile. This will print
     * only if DEBUG mode is enabled.
     * 
     * @param logger
     *            - Logger instance.
     * @param ex
     *            - Exception
     */
    public static void stacktrace(Logger logger, Throwable ex) {
        if (logger.isDebugEnabled()) {
            logger.debug("*******************************************************************");
            logger.debug(ex.getLocalizedMessage());
            StackTraceElement[] ste = ex.getStackTrace();
            if (ste != null && ste.length > 0) {
                for (StackTraceElement st : ste) {
                    logger.debug(st.getClassName() + "." + st.getMethodName() + "() [" + st.getFileName() + ":"
                            + st.getLineNumber() + "]");
                }
            }
            if (ex.getCause() != null) {
                stacktrace(logger, ex.getCause());
            }
        }
    }

    public static String stacktrace(Throwable ex) {
        StringBuffer buffer = new StringBuffer();
        stacktrace(buffer, ex);
        return buffer.toString();
    }

    private static void stacktrace(StringBuffer buffer, Throwable ex) {
        try {
            buffer.append("*******************************************************************");
            buffer.append("<b>" + ex.getLocalizedMessage() + "</b></br>");
            StackTraceElement[] ste = ex.getStackTrace();
            if (ste != null && ste.length > 0) {
                for (StackTraceElement st : ste) {
                    buffer.append(st.getClassName() + "." + st.getMethodName() + "() [" + st.getFileName() + ":"
                            + st.getLineNumber() + "]<br>");
                }
            }
            if (ex.getCause() != null) {
                stacktrace(buffer, ex.getCause());
            }
        } catch (Exception e) {
            return;
        }
    }

    /**
     * Print the HTML output of the stacktrace.
     * 
     * @param writer
     *            - Response Writer
     * @param ex
     *            - Exception
     */
    public static void stacktrace(PrintWriter writer, Throwable ex) {
        try {
            writer.write("*******************************************************************");
            writer.write("<b>" + ex.getLocalizedMessage() + "</b></br>");
            StackTraceElement[] ste = ex.getStackTrace();
            if (ste != null && ste.length > 0) {
                for (StackTraceElement st : ste) {
                    writer.write(st.getClassName() + "." + st.getMethodName() + "() [" + st.getFileName() + ":"
                            + st.getLineNumber() + "]<br>");
                }
            }
            if (ex.getCause() != null) {
                stacktrace(writer, ex.getCause());
            }
        } catch (Exception e) {
            return;
        }
    }
}

Related

1. stackToString(Throwable e)
2. stackToString(Throwable e)
3. stackToString(Throwable t)
4. stackToString(Throwable throwable, boolean skipMessage)
5. stackTrace(final Throwable t)
6. stackTrace(Throwable cause)
7. stackTrace(Throwable e)
8. stackTrace(Throwable e)
9. stackTrace(Throwable e)