将完整的异常堆栈输出到某个字符串中

系统管理员 2022-05-23 08:06 113阅读 0赞

import java.io.ByteArrayOutputStream;
    import java.io.IOException;
    import java.io.PrintWriter;
    import java.io.StringWriter;
    
    public class ExceptionUtils { 
    
        public static void main(String[] args) {
            try {
                int i = 1 / 0;
            } catch (Exception e) {
                /** * java.lang.ArithmeticException: / by zero at * com.itrus.laweyecloud. * utils.ExceptionUtils.main(ExceptionUtils.java:12) * 分割线1********************* java.lang.ArithmeticException: / by * zero at * com.itrus.laweyecloud.utils.ExceptionUtils.main(ExceptionUtils * .java:12) * * 分割线222********************* java.lang.ArithmeticException: / by * zero at * com.itrus.laweyecloud.utils.ExceptionUtils.main(ExceptionUtils * .java:12) */
                e.printStackTrace();
                System.out.println("分割线1*********************");
                System.out.println(getStackTrace2(e));
                System.out.println("分割线222*********************");
                System.out.println(getStackTrace(e));
            }
        }
    
        public static String getStackTrace(Exception e) {
            ByteArrayOutputStream buf = new java.io.ByteArrayOutputStream();
            e.printStackTrace(new java.io.PrintWriter(buf, true));
            String expMessage = buf.toString();
            try {
                buf.close();
            } catch (IOException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }
            return expMessage;
        }
    
        public static String getStackTrace2(Exception e) {
            StringWriter sw = new StringWriter();
            PrintWriter pw = new PrintWriter(sw, true);
            e.printStackTrace(pw);
            String stackTraceString = sw.getBuffer().toString();
            pw.close();
            try {
                sw.close();
            } catch (IOException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }
            return stackTraceString;
        }
    
    }