截获来自Tess4J的控制台输出 [英] Intercepting console output which originated from Tess4J

问题描述

我正在尝试拦截使用Tess4J时显示在屏幕上的红色Empty page!!消息.我编写了一个简短的拦截器类，该类重写了print和println并替换了stdout和stderr来检查以下字符串:

I am trying to intercept the red Empty page!! message that gets printed to my screen when using Tess4J. I wrote a short interceptor class that overrides print and println and replaced stdout and stderr to check for this string:

private static class Interceptor extends PrintStream {
    public Interceptor(OutputStream out) {
        super(out, true);
    }
    @Override
    public void print(String s) {
        if ( !s.contains("Empty page!!") )
            super.print(s);
    }
    @Override
    public void println(String s) {
        if ( !s.contains("Empty page!!") )
            super.println(s);
    }
}

我测试了该类:它可以工作并且禁止我写到stdout和stderr的任何Empty page!!.我没有成功从Tess4J捕获到Empty page!!消息，尽管该消息以红色打印到控制台.我的问题:如何截获并禁止显示此消息?

I tested the class: It works and suppresses any Empty page!! that I write to stdout and stderr. I do not succeed in catching the Empty page!! message from Tess4J that gets printed to my console in red though. My question: How can I intercept and suppress this message?

谢谢.

推荐答案

您可能想模仿Tesseract的quiet命令行选项，该选项具有debug_file /dev/null.

You may want to emulate Tesseract's quiet command-line option, which has debug_file /dev/null.

api.setVariable("debug_file", "/dev/null");

或

instance.setTessVariable("debug_file", "/dev/null");

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