com.wudaosoft.commons.utils.Exceptions Maven / Gradle / Ivy
/**
* Copyright 2009-2018 Wudao Software Studio(wudaosoft.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.
*/
package com.wudaosoft.commons.utils;
import java.io.PrintWriter;
import java.io.StringWriter;
/**
* 关于异常的工具类.
*
* @author Changsoul Wu
*/
public class Exceptions {
/**
* 将CheckedException转换为UncheckedException.
*/
public static RuntimeException unchecked(Throwable ex) {
if (ex instanceof RuntimeException) {
return (RuntimeException) ex;
} else {
return new RuntimeException(ex);
}
}
/**
* 将ErrorStack转化为String.
*/
public static String getStackTraceAsString(Throwable ex) {
StringWriter stringWriter = new StringWriter();
ex.printStackTrace(new PrintWriter(stringWriter));
return stringWriter.toString();
}
/**
* 获取组合本异常信息与底层异常信息的异常描述, 适用于本异常为统一包装异常类，底层异常才是根本原因的情况。
*/
public static String getErrorMessageWithNestedException(Throwable ex) {
Throwable nestedException = ex.getCause();
return new StringBuilder().append(ex.getMessage()).append(" nested exception is ")
.append(nestedException.getClass().getName()).append(":").append(nestedException.getMessage())
.toString();
}
/**
* 获取异常的Root Cause.
*/
public static Throwable getRootCause(Throwable ex) {
Throwable cause;
while ((cause = ex.getCause()) != null) {
ex = cause;
}
return ex;
}
/**
* 判断异常是否由某些底层的异常引起.
*/
public static boolean isCausedBy(Exception ex, Class... causeExceptionClasses) {
Throwable cause = ex;
while (cause != null) {
for (Class causeClass : causeExceptionClasses) {
if (causeClass.isInstance(cause)) {
return true;
}
}
cause = cause.getCause();
}
return false;
}
}