Redirect stdio in Java and C, 在Java和C代码中重定向输出。

Situation:

    Printing to stdout is a major tool for debug at most time for most programmers, I believe. But sometimes, maybe in a daemon or a job in a framework certain framework, there is problem with stdio. The problem is you just can't get the fucking printf work. You see nothing in the log file and get a fucking blind eye, which is quite annoying. Redirecting is one tool you could use.

    I guess in daemon process there is kind of conflict in stdout. But haven't got yet into it.

Solution:

    Redirect stdout to a file in code.

Implementation:

In Java:

    System.setOut(new PrintStream(new File("test.txt")));

    System.out.println("Where am i?");

    //cat test.txt and see what's there

in C:

freopen("D:\\OUTPUT.txt", "w", stdout);

    printf("Where am i?");

Reflection:

    From the days I'm fucked by being blind with you program stdout, I know I didn't know printf well.

http://blog.youkuaiyun.com/cheetach119/article/details/23339629