log4j自定义日志级别

最新推荐文章于 2023-08-10 17:26:59 发布

jyl_2012

最新推荐文章于 2023-08-10 17:26:59 发布

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分类专栏： java log4j 文章标签： log4j class constructor filter 测试 user

本文链接：https://blog.youkuaiyun.com/jyl_2012/article/details/8081320

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本文介绍了如何自定义Log4j的日志级别并实现过滤功能。通过创建`UserLogFilter`类，设置`levelMin`和`levelMax`属性来决定日志是否被记录。在XML配置中应用这个过滤器，并在测试类`UserLogTest`中验证了自定义日志级别的效果。

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自定义Log4j日志级别

public class UserLog {

private Logger logger;

public UserLog(Logger logger) {
super();
this.logger = logger;
}

public static UserLog getLog(Class clazz){
Logger logger = Logger.getLogger(clazz);
return new UserLog(logger);
}

private static class UserInfoLevel extends Level {
private static final long serialVersionUID = -7976298046021545731L;

protected UserInfoLevel(int level, String levelStr, int syslogEquivalent) {
super(level, levelStr, syslogEquivalent);
// TODO Auto-generated constructor stub
}
}

private static final Level User_LOG_LEVEL = new UserInfoLevel(20050, "USERINFO", SyslogAppender.LOG_LOCAL0);

public void userLog(Object pm_objLogInfo) {
logger.log(User_LOG_LEVEL, pm_objLogInfo);
}

}

自定义级别过滤

public class UserLogFilter extends Filter {

boolean acceptOnMatch = false;
int levelMin;
int levelMax;

public int getLevelMin() {
return levelMin;
}

public void setLevelMin(int levelMin) {
this.levelMin = levelMin;
}

public int getLevelMax() {
return levelMax;
}

public void setLevelMax(int levelMax) {
this.levelMax = levelMax;
}

@Override
public int decide(LoggingEvent lgEvent) {

int inputLevel = lgEvent.getLevel().toInt();
if (inputLevel >= levelMin && inputLevel <= levelMax) {
return 0;
}
return -1;
}

}

xml配置方法：

测试：

public class UserLogTest {

private static Logger logger = Logger.getLogger(UserLogTest.class);
@Test
public void test(){
UserLog.getLog(UserLogTest.class).userLog("这是一条测试信息~");
logger.info("测试info");
}
}