Java tutorial
/* Jackson JSON-processor. * * Copyright (c) 2007- Tatu Saloranta, tatu.saloranta@iki.fi */ package com.fasterxml.jackson.core; /** * Intermediate base class for all problems encountered when * processing (parsing, generating) JSON content * that are not pure I/O problems. * Regular {@link java.io.IOException}s will be passed through as is. * Sub-class of {@link java.io.IOException} for convenience. */ public class JsonProcessingException extends java.io.IOException { final static long serialVersionUID = 123; // Stupid eclipse... protected JsonLocation _location; protected JsonProcessingException(String msg, JsonLocation loc, Throwable rootCause) { /* Argh. IOException(Throwable,String) is only available starting * with JDK 1.6... */ super(msg); if (rootCause != null) { initCause(rootCause); } _location = loc; } protected JsonProcessingException(String msg) { super(msg); } protected JsonProcessingException(String msg, JsonLocation loc) { this(msg, loc, null); } protected JsonProcessingException(String msg, Throwable rootCause) { this(msg, null, rootCause); } protected JsonProcessingException(Throwable rootCause) { this(null, null, rootCause); } public JsonLocation getLocation() { return _location; } /* /********************************************************** /* Extended API /********************************************************** */ /** * Method that allows accessing the original "message" argument, * without additional decorations (like location information) * that overridden {@link #getMessage} adds. * * @since 2.1 */ public String getOriginalMessage() { return super.getMessage(); } /* /********************************************************** /* Methods for sub-classes to use, override /********************************************************** */ /** * Accessor that sub-classes can override to append additional * information right after the main message, but before * source location information. */ protected String getMessageSuffix() { return null; } /* /********************************************************** /* Overrides of standard methods /********************************************************** */ /** * Default method overridden so that we can add location information */ @Override public String getMessage() { String msg = super.getMessage(); if (msg == null) { msg = "N/A"; } JsonLocation loc = getLocation(); String suffix = getMessageSuffix(); // mild optimization, if nothing extra is needed: if (loc != null || suffix != null) { StringBuilder sb = new StringBuilder(100); sb.append(msg); if (suffix != null) { sb.append(suffix); } if (loc != null) { sb.append('\n'); sb.append(" at "); sb.append(loc.toString()); } msg = sb.toString(); } return msg; } @Override public String toString() { return getClass().getName() + ": " + getMessage(); } }