我正在尝试使用属性对象配置log4j2版本2.5。执行此操作的原因是从版本1.2.17迁移。我无法直接使用属性文件。我们对programmaticaly进行了一些修改。
以下是我的尝试:
public class LogTest {
static {
System.setProperty("log4j.configurationFactory", "logsample.common.util.LogsampleConfigurationFactory");
}
private static Logger logger = LogManager.getLogger(LogTest.class.getName());
public static void main(String[] args) throws Exception
{
logger.debug("First log");
logger.info("Infoed");
}
}
name = PropertiesConfig
property.filename = D:/rolling/rollingtest.log
appenders = file
appender.file.type = File
appender.file.name = LOGFile
appender.file.fileName = ${filename}
appender.file.layout.type = PatternLayout
appender.file.layout.pattern = %d %p %C{1.} [%t] %m%n
loggers = file
logger.file.name = logware.common.util
logger.file.level = debug
logger.file.appenderRefs = file
logger.file.appenderRef.file.ref = LOGFile
public class LogsampleConfigurationFactory extends ConfigurationFactory {
@Override
protected String[] getSupportedTypes() {
return new String[]{".properties", "*"};
}
@Override
public Configuration getConfiguration(ConfigurationSource source) {
return new PropertiesConfiguration(createConfigurationSource(), null);
}
@Override
public Configuration getConfiguration(String name, URI configLocation) {
return new PropertiesConfiguration(createConfigurationSource(), null);
}
private ConfigurationSource createConfigurationSource()
{
Properties p = new Properties();
ByteArrayOutputStream out = new ByteArrayOutputStream();
InputStream in = null;
try {
p.load(new FileInputStream("D:/log4jSample/properties/trace.properties"));
p.store(out, null);
} catch (IOException e) {
e.printStackTrace();
}
in = new ByteArrayInputStream(out.toByteArray());
ConfigurationSource configSrc = null;
try {
configSrc = new ConfigurationSource(in);
}
catch (IOException i)
{
}
return configSrc;
}
}
当我运行LogTest类时,它无法使用空指针获取LogContext。
java.lang.ExceptionInInitializerError
Caused by: java.lang.NullPointerException
at org.apache.logging.log4j.core.config.builder.impl.BuiltConfiguration.<init>(BuiltConfiguration.java:58)
at org.apache.logging.log4j.core.config.properties.PropertiesConfiguration.<init>(PropertiesConfiguration.java:36)
at logware.common.util.LogwareConfigurationFactory.getConfiguration(LogwareConfigurationFactory.java:46)
at org.apache.logging.log4j.core.config.ConfigurationFactory$Factory.getConfiguration(ConfigurationFactory.java:427)
at org.apache.logging.log4j.core.config.ConfigurationFactory.getConfiguration(ConfigurationFactory.java:256)
at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:561)
at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:578)
at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:214)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:235)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:41)
at org.apache.logging.log4j.LogManager.getContext(LogManager.java:167)
at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:522)
at logware.common.util.LogTest.<clinit>(LogTest.java:58)
所以,它是我没有放入PropertiesConfiguration构造函数的rootComponent。但我不知道应该是什么。 在这方面的任何指导或线索都会很棒。
答案 0 :(得分:2)
2.5我建议你这样做:
@Override
public Configuration getConfiguration(ConfigurationSource source) {
PropertiesConfigurationFactory factory = new PropertiesConfigurationFactory();
return factory.getConfiguration(source);
}
使用最新版本,您必须修改此操作:
@Override
public Configuration getConfiguration(LoggerContext ctx, ConfigurationSource source) {
PropertiesConfigurationFactory factory = new PropertiesConfigurationFactory();
return factory.getConfiguration(ctx, source);
}