java收集Exception信息

来源：互联网发布：stc12单片机编辑：程序博客网时间：2024/06/11 21:27

    public void methodB() {        System.out.println("------进入methodB----------");//        init();        String str1 = null;        String str2 = "123";        try{            if(str1.equals(str2)){            }        }catch (Exception e){            System.out.println("----------------"+e.getMessage());            Writer writer = new StringWriter();            PrintWriter printWriter = new PrintWriter(writer);            e.printStackTrace(printWriter);            Throwable cause = e.getCause();            while (cause != null) {                cause.printStackTrace(printWriter);                cause = cause.getCause();            }            printWriter.close();            String result = writer.toString();            System.out.println("======================"+result);        }/*------进入methodB--------------------------null======================java.lang.NullPointerExceptionat Main2.methodB(Main2.java:16)at Main.methodA(Main.java:9)at Main.main(Main.java:3)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)at java.lang.reflect.Method.invoke(Method.java:597)at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)*/

可见第二种收集的信息比第一种全面

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