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Commit b70ff66

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Merge pull request giantray#32 from andyfeng101/master
怎么样将堆栈追踪信息转换为字符串类型
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#怎么样将堆栈追踪信息转换为字符串类型
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##问题
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`Throwable.getStackTrace()`的结果转换为一个字符串来来描述堆栈信息的最简单的方法是什么
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###最佳答案
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可以用下面的方法将异常堆栈信息转换为字符串类型。该类在Apache commons-lang-2.2.jar中可以找到:
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[`org.apache.commons.lang.exception.ExceptionUtils.getStackTrace(Throwable)`](org.apache.commons.lang.exception.ExceptionUtils.getStackTrace\(Throwable\))
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###答案二
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[`Throwable.printStackTrace(PrintWriter pw)`](https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html#printStackTrace-java.io.PrintWriter-)将对堆栈信息发送到一个输出中:
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````java
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StringWriter sw = new StringWriter();
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PrintWriter pw = new PrintWriter(sw);
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t.printStackTrace(pw);
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sw.toString(); // stack trace as a string
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````
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###答案三
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````java
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StringWriter sw = new StringWriter();
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e.printStackTrace(new PrintWriter(sw));
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String exceptionAsString = sw.toString();
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````
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###答案四
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````java
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public String stackTraceToString(Throwable e) {
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StringBuilder sb = new StringBuilder();
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for (StackTraceElement element : e.getStackTrace()) {
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sb.append(element.toString());
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sb.append("\n");
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}
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return sb.toString();
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}
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````
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stackoverflow链接:
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http://stackoverflow.com/questions/1149703/how-can-i-convert-a-stack-trace-to-a-string

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