71 lines
2.0 KiB
Java
71 lines
2.0 KiB
Java
package com.fuint.exception;
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import java.io.PrintWriter;
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import java.io.StringWriter;
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/**
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* 关于异常的工具类.
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*
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* Created by FSQ
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* CopyRight https://www.fuint.cn
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*/
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public class Exceptions {
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/**
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* 将CheckedException转换为UncheckedException.
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*/
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public static RuntimeException unchecked(Throwable ex) {
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if (ex instanceof RuntimeException) {
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return (RuntimeException) ex;
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} else {
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return new RuntimeException(ex);
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}
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}
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/**
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* 将ErrorStack转化为String.
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*/
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public static String getStackTraceAsString(Throwable ex) {
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StringWriter stringWriter = new StringWriter();
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ex.printStackTrace(new PrintWriter(stringWriter));
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return stringWriter.toString();
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}
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/**
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* 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。
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*/
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public static String getErrorMessageWithNestedException(Throwable ex) {
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Throwable nestedException = ex.getCause();
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return new StringBuilder().append(ex.getMessage()).append(" nested exception is ")
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.append(nestedException.getClass().getName()).append(":")
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.append(nestedException.getMessage()).toString();
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}
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/**
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* 获取异常的Root Cause.
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*/
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public static Throwable getRootCause(Throwable ex) {
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Throwable cause;
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while ((cause = ex.getCause()) != null) {
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ex = cause;
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}
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return ex;
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}
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/**
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* 判断异常是否由某些底层的异常引起.
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*/
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public static boolean isCausedBy(Exception ex, Class<? extends Exception>... causeExceptionClasses) {
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Throwable cause = ex;
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while (cause != null) {
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for (Class<? extends Exception> causeClass : causeExceptionClasses) {
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if (causeClass.isInstance(cause)) {
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return true;
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}
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}
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cause = cause.getCause();
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}
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return false;
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}
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}
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