用下面的方法可以将异常堆栈转换为String：
public static String getStackInfo(Exception ex) {
StringWriter sw = new StringWriter();
ex.printStackTrace(new PrintWriter(sw));
return sw.toString();
}
测试示例
import java.io.PrintWriter;
import java.io.StringWriter;
public class ExceptionTest {
/**
* 自定义异常
*/
public static class CustomException extends RuntimeException {
public CustomException(String msg) {
super(msg);
}
}
/**
* 将异常的堆栈内容转换为 String
*/
public static String getStackInfo(Exception ex) {
StringWriter sw = new StringWriter();
ex.printStackTrace(new PrintWriter(sw));
return sw.toString();
}
public static void main(String[] args) {
CustomException ex = new CustomException("异常");
System.out.println(getStackInfo(ex));
}
}
执行结果:
ExceptionTest$CustomException: 异常
at ExceptionTest.main(ExceptionTest.java:25)