解惑tomcat如何将标准输出保存到文件——重定向System.out

package com.xs.test;

import java.io.FileOutputStream;
import java.io.PrintStream;

public class Test {
public static void main(String[] args) throws Exception {
String outPath = "C:\\out.log";
System.setOut(new PrintStream(new FileOutputStream(outPath, true)));
System.out.println("Hello world!");
}
}