Question

我尝试为每个webapp使用不同的日志。我在同一台服务器中复用应用程序，我需要从属性文件中加载此目录。

每个网络应用加载一个包含此键/值的属性文件（X是应用程序的名称，所有人都不同）：

app=APP.X
logPath=C://logs

我在每个webapp项目中添加了一个log4j.properties文件，除了log的路径（log4j.properties）之外我还需要所有参数

# Root logger option
log4j.rootLogger=INFO, stdout, file

# Redirect log messages to console
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c:%M:%L - %m%n

# Redirect log messages to a log file, support file rolling.
log4j.appender.file=org.apache.log4j.DailyRollingFileAppender
log4j.appender.file.encoding=UTF-8
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c:%M:%L - %m%n
#log4j.appender.file.MaxBackupIndex=8
log4j.appender.file.DatePattern='.'yyyy-MM

我在我的util jar中创建了一个Java类，它实现了ApplicationListener并添加了键log4j.appender.file.File（Log4jContextListener.java）

    public class Log4jContextListener implements ApplicationListener<ContextStartedEvent>
{
    @Value("${rutaLogs}")
    private String rutaLogs;

    @Value("${app}")
    private String app;

    private Logger log = Logger.getLogger(getClass());

    @Override
    public void onApplicationEvent(ContextStartedEvent arg0)
    {
        Properties props = new Properties();
        InputStream strm = null;
        try
        {
            System.out.println("LOADING APP: " + app);
            strm = Log4jContextListener.class.getClassLoader().getResourceAsStream("log4j.properties");
            props.load(strm);
            if (props != null)
                log.info("PROP: " + props.getProperty("log4j.appender.file.layout"));
            props.put("log4j.appender.file.File", logPath+ app + File.separator + app + ".log");
        }
        catch (IOException propsLoadIOE)
        {
            throw new Error("can't load logging config file", propsLoadIOE);
        }
        finally
        {
            try
            {
                strm.close();
            }
            catch (IOException configCloseIOE)
            {
                throw new Error("error closing logging config file", configCloseIOE);
            }
        }
        // props.put("webAppRoot", event.getServletContext().getRealPath("/"));
        PropertyConfigurator.configure(props);

    }

}

每个Web应用程序都会在applicationContext.xml

中添加一个带有此声明的bean

<!--    Listener to initialize LOG4J -->
    <bean id="log4jConfigurationListener" class="com.framework.listeners.Log4jContextListener" />

日志的文件夹和文件正在创建，但日志跟踪是混合的，每个webapp仅使用加载的最新位置。

我如何在每个wepapp上下文中做出不同的事情？

PD：我必须从属性中读取，我不能使用环境变量。

Answer 1

您好我设法使用以下内容为每个webapp上下文设置日志位置：

package ...

import org.apache.log4j.Logger;
import org.apache.log4j.lf5.LogLevel;
import org.springframework.web.WebApplicationInitializer;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import java.io.InputStream;
import java.util.Properties;
import java.util.TimeZone;

public class SystemPropertyDefaultsInitializer implements WebApplicationInitializer {
    private static final Logger LOG = Logger.getLogger(SystemPropertyDefaultsInitializer.class);

    @Override
    public void onStartup(ServletContext servletContext) throws ServletException {
    String warName = new File(servletContext.getRealPath("/")).getName();

        InputStream resourceAsStream = getClass().getClassLoader().getResourceAsStream("log4j.properties");
        Properties properties = PropertiesHelper.loadApplicationProperties(resourceAsStream);

    String logLocation = "/var/log/tomcat7/" + warName + ".log";
    File file = new File(logLocation);

    if (!file.exists()) {
        FileOutputStream fos = new FileOutputStream(file);
        fos.close();
    }

    if (!file.canWrite()) {
        throw new IOException("Write permission denied for file \"" + logLocation + "\"");
    }


    LOG.info("Log location set to: \"" + logLocation + "\"");
    properties.setProperty("log4j.appender.FILE.File", logLocation);
    PropertyConfigurator.configure(properties);
    }
}

每个webapp

1 个答案: