[英]Log4j Custom Appender Properties File Issue
因此,我為Log4J創建了一個自定義追加器,該追加器本質上與socketappender具有相同的功能,但是使用UDP而不是TCP。 但是,我無法獲取日志來顯示日期。 我認為.properties文件可能存在問題,但是我不確定是什么問題。 尤其是因為我知道.properties文件在某種程度上可以正常工作,因為測試程序知道如何使用哪個附加程序。 但是,它沒有使用.properties文件中指定的布局。 任何幫助/建議將不勝感激!
附加代碼:
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
import java.net.UnknownHostException;
import org.apache.log4j.AppenderSkeleton;
import org.apache.log4j.spi.LoggingEvent;
public /*static*/ class UDPAppender extends AppenderSkeleton {
@Override
protected void append(LoggingEvent event) {
String message = null;
event.getProperties();
StringBuilder formatedMessage = new StringBuilder();
formatedMessage.append("Level:");
formatedMessage.append(event.getLevel());
formatedMessage.append(", FILE:");
formatedMessage.append(event.getLocationInformation().getFileName());
formatedMessage.append(", Thread Id:");
formatedMessage.append(event.getLocationInformation().getLineNumber());
formatedMessage.append(", ERROR: ");
formatedMessage.append(event.getMessage().toString());
message = formatedMessage.toString();
DatagramSocket clientSocket = null;
//creating DatagramSocket to send logger info to socket; if not created, will print Stack Trace
try {
clientSocket = new DatagramSocket();
} catch (SocketException e) {
e.printStackTrace();
}
InetAddress IPAddress = null;
//get InetAddress for sending packet
try {
IPAddress = InetAddress.getByName("localhost");
} catch (UnknownHostException e) {
e.printStackTrace();
}
byte[] sendData = new byte[1024];
sendData = message.getBytes(); //convert from String to bytes so that message can be sent through datagrampacket
DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, IPAddress, 27770); //address packet
try {
clientSocket.send(sendPacket); //send packet to the socket addressed above
} catch (IOException e) {
e.printStackTrace();
}
clientSocket.close(); //need to close
}
public void close() {
}
public boolean requiresLayout() {
return true;
}
}
測試代碼:
import org.apache.log4j.*;
public class Tester {
private static final Logger log2 = Logger.getLogger("REMOTE");
public static void main(String[] args) {
//configures using the .properties file user creates
PropertyConfigurator.configure("log4j.properties");
log2.info("This is info message");
System.out.println("Logging complete");
//prints to console to let user know logging completed successfully
LogManager.shutdown();
//closes logs once logging is complete
}
}
.properties文件:
log4j.logger.REMOTE=DEBUG, REMOTE
log4j.appender.REMOTE=custom.UDPAppender
log4j.appender.REMOTE.layout=org.apache.log4j.PatternLayout
log4j.appender.REMOTE.layout.ConversionPattern=%d{MMMM dd HH:mm:ss}, %d{yyyy} %F %L %m %t
實際上,我可以使用以下代碼將時間戳轉換為日期/時間:
long date = event.getTimeStamp();
Date dateObj = new Date(date);
DateFormat df = new SimpleDateFormat("MM-dd-yyyy HH:mm:ss");
StringBuilder formatedMessage = new StringBuilder();
formatedMessage.append("Time:");
formatedMessage.append(df.format(dateObj));
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