JavaDemo——将Exception的堆栈信息转换成String

项目里打印日志用的 org.jboss.logging.Logger，在Linux上用nohup java -jar 启动的jar包，发现程序抛异常的时候只有在nohup.out里打印，在log.txt文件里没有打印，所以把Exception的堆栈信息转成String打印到logger里，查询了一些资料，整理了下。

方法一：用PrintWriter处理

package com.getexception;

import java.io.PrintWriter;
import java.io.StringWriter;

/**
 * 
 * TODO
 * @author XWF
 */
public class GetErrorInfoFromException {
	public static String getErrorInfoFromException(Exception e) {
        try {
            StringWriter sw = new StringWriter();
            PrintWriter pw = new PrintWriter(sw);
            e.printStackTrace(pw);
            String s = sw.toString();
            sw.close();
            pw.close();
            return "\r\n" + s + "\r\n";
        } catch (Exception ex) {
            return "获得Exception信息的工具类异常";
        }
    }
}

方法二：自己拼

package com.getexception;
/**
 * 
 * TODO 
 * @author XWF
 */
public class GetExceptionInfo {
	public static String GetException(Throwable e) {
		try {
			String s = e.toString()+"\n";
			StackTraceElement[] trace = e.getStackTrace();
	        for (StackTraceElement traceElement : trace)
	        	s = s + "\tat " + traceElement + "\n";

	        for (Throwable se : e.getSuppressed())
	            s = s + GetException(se);

	        Throwable ourCause = e.getCause();
	        if (ourCause != null)
	            s = s + GetException(ourCause);
	        s += "\n";
	        return s;
		}catch (Exception exception) {
			exception.printStackTrace();
			return "GetExceptionInfo工具异常。";
		}
		
	}
}

测试Demo：

package com.getexception;

public class TestGetException {

	public static void main(String[] args) {
		try {
			new AtestGetException().throwFromBtest();
		}catch (Exception e) {
			System.out.println(GetExceptionInfo.GetException(e));
			System.out.println(GetErrorInfoFromException.getErrorInfoFromException(e));
		}
	}

}
class AtestGetException{
	BtestGetException bGetException = new BtestGetException();
	public void throwFromBtest() {
		bGetException.throwException();
	}
}
class BtestGetException{
	public void throwException() {
		Integer.parseInt("a");
	}
}

结果：