How to enable logging for apache commons HttpClient on Android

问题

To enable logging for apache commons HttpClient in normal Java application I used:

System.setProperty("org.apache.commons.logging.Log", "org.apache.commons.logging.impl.SimpleLog");
System.setProperty("org.apache.commons.logging.simplelog.showdatetime", "true");
System.setProperty("org.apache.commons.logging.simplelog.log.httpclient.wire", "debug");
System.setProperty("org.apache.commons.logging.simplelog.log.org.apache.commons.httpclient", "debug");

But on android I don't see logs in LogCat.

Am I missing some thing?

回答1:

Ignore my earlier comment. I found the solution on the org.apache.http logging page. Your original answer was referring to httpclient-3.x logging, and the working code for recent versions comes from http-components logging

java.util.logging.Logger.getLogger("org.apache.http.wire").setLevel(java.util.logging.Level.FINEST);
java.util.logging.Logger.getLogger("org.apache.http.headers").setLevel(java.util.logging.Level.FINEST);

System.setProperty("org.apache.commons.logging.Log", "org.apache.commons.logging.impl.SimpleLog");
System.setProperty("org.apache.commons.logging.simplelog.showdatetime", "true");
System.setProperty("org.apache.commons.logging.simplelog.log.httpclient.wire", "debug");
System.setProperty("org.apache.commons.logging.simplelog.log.org.apache.http", "debug");
System.setProperty("org.apache.commons.logging.simplelog.log.org.apache.http.headers", "debug");

and properties:

adb shell setprop log.tag.org.apache.http VERBOSE
adb shell setprop log.tag.org.apache.http.wire VERBOSE
adb shell setprop log.tag.org.apache.http.headers VERBOSE

The difference is in the logging tag names.

回答2:

Here is a solution (without digging into details)

Console:

adb shell setprop log.tag.httpclient.wire.header VERBOSE
adb shell setprop log.tag.httpclient.wire.content VERBOSE

Code:

java.util.logging.Logger.getLogger("httpclient.wire.header").setLevel(java.util.logging.Level.FINEST);
java.util.logging.Logger.getLogger("httpclient.wire.content").setLevel(java.util.logging.Level.FINEST);

Test:

java.util.logging.Logger.getLogger("httpclient.wire.content").log(java.util.logging.Level.CONFIG, "hola");

回答3:

The devil is in the details. I'm running the 2.3.3 emulator and got it working with:

java.util.logging.Logger.getLogger("org.apache.http.wire").setLevel(java.util.logging.Level.FINEST);
java.util.logging.Logger.getLogger("org.apache.http.headers").setLevel(java.util.logging.Level.FINEST);

and in the adb shell

# setprop log.tag.org.apache.http.wire VERBOSE
# setprop log.tag.org.apache.http.headers VERBOSE

Thus it seems the log specifiers are different.

回答4:

You just need to use

java.util.logging.Logger.getLogger(yourFullClassName).setLevel(java.util.logging.Level.All);

and

adb shell setprop log.tag.correspondingTag VERBOSE

Android use this function to get correspondingTag from class full name:

public static String loggerNameToTag(String loggerName)
  {
    if (loggerName == null) {
      return "null";
    }

    int length = loggerName.length();
    if (length <= 23) {
      return loggerName;
    }

    int lastPeriod = loggerName.lastIndexOf(".");
    return length - (lastPeriod + 1) <= 23 ? loggerName.substring(lastPeriod + 1) : loggerName.substring(loggerName.length() - 23);
  }

so for example，I want to enable logging for “org.apache.http.impl.client.DefaultRequestDirector” class，do such things below:

String clzName = "org.apache.http.impl.client.DefaultRequestDirector";
String newClzName = loggerNameToTag(clzName);
System.out.println("className:" + clzName + " tagName is " + newClzName);    //get tagName from class full name,and then it will be used in setprop
Logger jdkLogger = Logger.getLogger(clzName);
jdkLogger.setLevel(Level.ALL);
if (jdkLogger.isLoggable(Level.FINE))
{
        jdkLogger.log(Level.FINE, "jdk log msg");    
        jdkLogger.log(Level.Fine,"tagName is")
}

And then in adb shell

setprop log.tag.DefaultRequestDirector VERBOSE

来源：https://stackoverflow.com/questions/3246792/how-to-enable-logging-for-apache-commons-httpclient-on-android

标签

android

apache-commons-httpclient