java - 如何将堆栈跟踪打印到页面？

如何将异常堆栈跟踪打印到网页？

import com.opensymphony.xwork2.ActionSupport;
import java.util.Arrays;

public class ExceptionAction extends ActionSupport
{

 public String execute()
 {
    //
    String errMsg = Arrays.toString(Thread.currentThread().getStackTrace());

    this.addActionError(
                    "Unexcepted error has occurred. \n"
                    +errMsg
                    + "\nPlease try again or report this error to    administrator or support team. \n ");

    return "error";
 }

 /**
 *
 */
 private static final long serialVersionUID = -3754090784536811052L;
}

但是我得到了上面代码无用的味精，味精是这样的：

    [java.lang.Thread.getStackTrace(Thread.java:1479),    com.monitoring.action.ExceptionAction.execute(ExceptionAction.java:11), sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method), sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39),

最佳答案

见documentation

File file = new File("test.log");
PrintStream ps = new PrintStream(file);
try {
    // something
} catch (Exception ex) {
    ex.printStackTrace(ps);
}
ps.close();

另见Difference between printStackTrace() and toString()

关于java - 如何将堆栈跟踪打印到页面？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/17248310/