将java输出打印到文件 [英] Print java output to a file

问题描述

如何在一些文件中同时将Java输出打印到shell控制台？可能吗？

How to print java output to both shell console and at the same time in some file? is that possible?

推荐答案

您可以在程序开头包含以下行：

You can include the following lines at the start of your program:

final PrintStream origout = System.out;
final PrintStream fileout = new PrintStream(file);
System.setOut(new PrintStream(new OutputStream() {
    @Override
    public void write(int b) throws IOException {
        origout.write(b);
        fileout.write(b);
    }
}));

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