选项很少

StringWriter sw=新StringWriter（）；e.printStackTrace（新的PrintWriter（sw））；字符串异常AsString=sw.toString（）；使用Google Guava libString stackTrace=Throwables.getStackTraceAsString（myException）；org.apache.commons.lang.exception.ExceptionUtils.getStackTrace（可丢弃）

public static String getStackTrace(Throwable t) {
    StringWriter sw = new StringWriter();
    t.printStackTrace(new PrintWriter(sw));
    return sw.toString();
}

没有java.io.*，它可以这样做。

String trace = e.toString() + "\n";                     

for (StackTraceElement e1 : e.getStackTrace()) {
    trace += "\t at " + e1.toString() + "\n";
}   

然后跟踪变量保存堆栈跟踪。输出也包含初始原因，输出与printStackTrace（）相同

例如，printStackTrace（）产生：

java.io.FileNotFoundException: / (Is a directory)
    at java.io.FileOutputStream.open0(Native Method)
    at java.io.FileOutputStream.open(FileOutputStream.java:270)
    at java.io.FileOutputStream.<init>(FileOutputStream.java:213)
    at java.io.FileOutputStream.<init>(FileOutputStream.java:101)
    at Test.main(Test.java:9)

当打印到stdout时，跟踪字符串保持

java.io.FileNotFoundException: / (Is a directory)
     at java.io.FileOutputStream.open0(Native Method)
     at java.io.FileOutputStream.open(FileOutputStream.java:270)
     at java.io.FileOutputStream.<init>(FileOutputStream.java:213)
     at java.io.FileOutputStream.<init>(FileOutputStream.java:101)
     at Test.main(Test.java:9)

番石榴的丢弃类

如果您有实际的Throwables实例，GoogleGuava提供Throwables.getStackTraceAsString（）。

例子：

String s = Throwables.getStackTraceAsString ( myException ) ;

这应该是有效的：

StringWriter sw = new StringWriter();
e.printStackTrace(new PrintWriter(sw));
String exceptionAsString = sw.toString();

 import java.io.PrintWriter;
import java.io.StringWriter;

public class PrintStackTrace {

    public static void main(String[] args) {

        try {
            int division = 0 / 0;
        } catch (ArithmeticException e) {
            StringWriter sw = new StringWriter();
            e.printStackTrace(new PrintWriter(sw));
            String exceptionAsString = sw.toString();
            System.out.println(exceptionAsString);
        }
    }
}

运行程序时，输出将类似：

java.lang.ArithmeticException: / by zero
at PrintStackTrace.main(PrintStackTrace.java:9)