硒许多日志（如何删除） [英] Selenium many Logs (How to remove)

问题描述

我尝试了使用Firefox 48的 Selenium 3.0.1。

我已经尝试了下面的代码：

java.util.logging.Logger.getLogger（com.gargoylesoftware.htmlunit）。setLevel（Level.OFF）;
java.util.logging.Logger.getLogger（org.apache.commons.httpclient）。setLevel（Level.OFF）;
java.util.logging.Logger.getLogger（ProtocolHandshake.class.getName（））.setLevel（Level.OFF）;

但是，一旦我在 Netbeans 下运行常规测试，...日志仍然出现：

 十二月02，2016 9:17:53 org.openqa.selenium.remote.ProtocolHandshake createSession 
 INFO：尝试双方言会话，假设Postel的定律在远程终端
 Dec 02 ，2016 9:17:57 org.openqa.selenium.remote.ProtocolHandshake createSession 
 INFO：检测到的方言：OSS 
  

解决这个问题的任何线索

解决方案

您必须将记录器固定在内存中， code> logging.properties 配置文件。从 java.util.logging.Logger docs：

记录器对象可以通过getLogger工厂方法之一的调用获得。这些将创建一个新的记录器或返回一个合适的现有记录器。需要注意的是，如果Logger的强引用不被保存，任何时候getLogger工厂方法返回的Logger都可能被垃圾回收。

当返回一个新的记录器时，日志级别由LogManager决定，LogManager默认使用来自 logging.properties 文件的设置。在你的例子中，可以看到以下内容：

1. 调用getLogger将创建一个新的记录器并从LogManager中设置级别。 >
   
2. 您的代码将记录器级别设置为OFF。


3. GC运行并销毁您的记录器以及您刚刚应用的设置。
   
4. Selenium调用getLogger并创建一个新的记录器并从LogManager中设置级别。
   

下面是一个示例测试用例来证明这一点：

  public static void main String [] args）{
 String name =com.gargoylesoftware.htmlunit; 
 for（int i = 0; i <5; i ++）{
 System.out.println（Logger.getLogger（name）.getLevel（））; 
 Logger.getLogger（name）.setLevel（Level.OFF）; 
 System.runFinalization（）; 
 System.gc（）; 
 System.runFinalization（）; 
 Thread.yield（）; 
 
 
 
 
 
 
 $ p $  null 代替 OFF 。
 
 
 
如果您通过保持强引用来固定记录器， ＃3从来没有发生，硒应该找到你创建的记录器，其级别设置为关闭。
  private static final Logger [ ]引脚; 
 static {
 pin = new Logger [] {
 Logger.getLogger（com.gargoylesoftware.htmlunit），
 Logger.getLogger（org.apache.commons.httpclient ），
 Logger.getLogger（org.openqa.selenium.remote.ProtocolHandshake）
}; （Logger l：pin）{
 l.setLevel（Level.OFF）; 
 
 
} 
} 
  
 
I tried the Selenium 3.0.1 with Firefox 48.

And I already tried the following code:

  
java.util.logging.Logger.getLogger("com.gargoylesoftware.htmlunit").setLevel(Level.OFF);
  java.util.logging.Logger.getLogger("org.apache.commons.httpclient").setLevel(Level.OFF);
  java.util.logging.Logger.getLogger(ProtocolHandshake.class.getName()).setLevel(Level.OFF);
but once i run the usual testing under Netbeans,... the logs still comes out:
Dec 02, 2016 9:17:53 AM org.openqa.selenium.remote.ProtocolHandshake createSession
INFO: Attempting bi-dialect session, assuming Postel's Law holds true on the remote end
Dec 02, 2016 9:17:57 AM org.openqa.selenium.remote.ProtocolHandshake createSession
INFO: Detected dialect: OSS
Any clue for solving this?
解决方案
You have to pin your loggers in memory or setup a logging.properties config file.  From the java.util.logging.Logger docs:

  
Logger objects may be obtained by calls on one of the getLogger factory methods. These will either create a new Logger or return a suitable existing Logger. It is important to note that the Logger returned by one of the getLogger factory methods may be garbage collected at any time if a strong reference to the Logger is not kept.
When a new logger is returned the log level is determined by the LogManager which by default uses settings from a logging.properties file.  In your example, it is possible to see the following:

Call to getLogger creates a new logger and sets level from LogManager.
Your code sets the logger level to OFF.
G.C. runs and destroys your logger along with settings you just applied.
Selenium calls getLogger and creates a new logger and sets level from LogManager.
Here is an example test case to prove the point:
    public static void main(String[] args) {
        String name = "com.gargoylesoftware.htmlunit";
        for (int i = 0; i < 5; i++) {
            System.out.println(Logger.getLogger(name).getLevel());
            Logger.getLogger(name).setLevel(Level.OFF);
            System.runFinalization();
            System.gc();
            System.runFinalization();
            Thread.yield();
        }
    }
Which will output null instead of OFF.

If you pin your logger by holding a strong reference then step #3 never happens and Selenium should instead find the logger you created which has the level set to OFF.
private static final Logger[] pin;
static {
    pin = new Logger[]{
        Logger.getLogger("com.gargoylesoftware.htmlunit"),
        Logger.getLogger("org.apache.commons.httpclient"),
        Logger.getLogger("org.openqa.selenium.remote.ProtocolHandshake")
    };

    for (Logger l : pin) {
        l.setLevel(Level.OFF);
    }
}


                        
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