printStackTrace方法打出的详细信息存储到一个字符串中

import java.io.*;

public class TestPrintWriter {
public static void main(String[] args) {
try {
throw new Exception("test");
} catch (Exception e) {
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
e.printStackTrace(pw);
System.out.println(sw.toString());
}
}
}