重构获取异常栈信息--printStackTrace

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MyStackTrace:

/**  *  * @author wumingkun * @version 1.0.0 * @Description */package com.demo.stacktrace;import java.io.PrintStream;/** * @author wumingkun *  */public class MyStackTrace {public static String getStackTrace(Throwable errors) {StringBuffer result = new StringBuffer();result.append(errors);StackTraceElement[] trace = errors.getStackTrace();for (int i = 0; i < trace.length; i++)result.append("\n\tat " + trace[i]); Throwable ourCause = errors.getCause();         if (ourCause != null)             result.append(getStackTraceAsCause(ourCause, trace));return result.toString();}private static String  getStackTraceAsCause(Throwable ourCause,StackTraceElement[] causedTrace) {StringBuffer result=new StringBuffer();StackTraceElement[] trace = ourCause.getStackTrace();int m = trace.length - 1, n = causedTrace.length - 1;while (m >= 0 && n >= 0 && trace[m].equals(causedTrace[n])) {m--;n--;}int framesInCommon = trace.length - 1 - m;result.append("\nCaused by: " + ourCause);for (int i = 0; i <= m; i++)result.append("\n\tat " + trace[i]);if (framesInCommon != 0)result.append("\n\t... " + framesInCommon + " more");Throwable tempCause = ourCause.getCause();if (tempCause != null)result.append(getStackTraceAsCause(tempCause, trace));return result.toString();}}

StackTraceTest:

/** *  * @author wumingkun * @version 1.0.0 * @Description */package com.demo.stacktrace;/** * @author wumingkun * */public class StackTraceTest {/** * @param args */public static void main(String[] args) {try {m1();} catch (Exception e) {System.out.println(MyStackTrace.getStackTrace(e));//直接返回异常栈信息字符串}}/** *  */private static void m1() {StringBuffer sb=null;try {sb.append("aa");} catch (Exception e) {throw new RuntimeException(e);}}}

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