获取包含内部异常的完整字符串堆栈跟踪 [英] Getting full string stack trace including inner exception

问题描述

Java的e.printStackTrace（）不会打印内部异常堆栈跟踪的所有细节。

Java's e.printStackTrace() doesn't print all the details of the inner exception's stack trace.

有没有一种方法可以生成完整的堆栈跟踪字符串形式？ （除了自己格式化）

Is there a ready way to generate the complete stack trace in string form? (besides formatting it myself)

编辑

我刚刚发现了printStackTrace （）确实 - 它过滤掉的堆栈帧正好是内部异常和外部异常共有的堆栈帧。所以其实这是相当我想要的东西，而不是 '完全' 堆栈跟踪。

I just found out what printStackTrace() does - apparently the stack frames it filters out are exactly the ones common to the inner exception and the outer one. So in fact it is rather what I want, and not the 'full' stack trace.

推荐答案

我结束了我自己的滚动（我把Throwable.printStackTrace（）的执行情况和调整它位）：

I ended up rolling my own (I took the implementation of Throwable.printStackTrace() and tweaked it a bit):

public static String joinStackTrace(Throwable e) {
    StringWriter writer = null;
    try {
        writer = new StringWriter();
        joinStackTrace(e, writer);
        return writer.toString();
    }
    finally {
        if (writer != null)
            try {
                writer.close();
            } catch (IOException e1) {
                // ignore
            }
    }
}

public static void joinStackTrace(Throwable e, StringWriter writer) {
    PrintWriter printer = null;
    try {
        printer = new PrintWriter(writer);

        while (e != null) {

            printer.println(e);
            StackTraceElement[] trace = e.getStackTrace();
            for (int i = 0; i < trace.length; i++)
                printer.println("\tat " + trace[i]);

            e = e.getCause();
            if (e != null)
                printer.println("Caused by:\r\n");
        }
    }
    finally {
        if (printer != null)
            printer.close();
    }
}

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