LogUtil 日志工具

• 语法说明

LogUtil 是底层实用日志工具, 可以代理 self4j 打印日志.

语法说明

LogUtil.info([logger,] 参数1, [参数2, 参数3, …])

所有的参数会用空格分隔打印到结果中, 不支持 {} 占位符. 如果参数收尾已有空白符, 则不再插入空格.

• 举例:

import cn.sybn.util.base.LogUtil;

LogUtil.debug(logger, "a", "b", new Date());
// logger debug a b 2023-02-28 11:09:15

LogUtil.info(logger, "a", "b", new Date());
// logger INFO a b 2023-02-28 11:09:15
        
LogUtil.error(logger, "a", "b", new Date());
// logger ERROR a b 2023-02-28 11:09:15

• 如果不传 logger 将自适应, 性能略低 ```java LogUtil.debug(“a”, “b”, new Date()); // logger debug a b 2023-02-28 11:09:15

LogUtil.info(“a”, “b”, new Date()); // logger INFO a b 2023-02-28 11:09:15

LogUtil.error(“a”, “b”, new Date());

* 支持传入方法, 打印方法返回值, 当 self4j 日志级别中不打印此日志时, 不会执行此方法, 从而提高性能
```java
LogUtil.debug(logger, "a", "b", ()->JsonTool.toJson(new Date()));
// 当 logger 没有开启 debug 日志时, toJson 方法不会被执行

• 对于传入的 exception 打印日志时会忽略无效的日志内容

普通日志会打印完整堆栈信息:

logger.info(“”, new Exception());

23-02-28 11:22:37.076 [main] INFO  cn.sybn.util.base.LogUtil -
        java.lang.Exception: null
        at cn.sybn.util.base.LogUtil.logTest(LogUtil.java:170)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
        at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
        at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
        at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:73)
        at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:83)
        at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
        at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
        at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
        at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
        at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
        at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
        at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
        at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)

本工具类会屏蔽框架的代码的堆栈信息: LogUtil.info(log, new Exception());

23-02-28 11:22:37.084 [main] INFO  cn.sybn.util.base.LogUtil - 
java.lang.Exception : 
    at cn.sybn.util.base.LogUtil.logTest(LogUtil.java:171)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-2)
	at sun.reflect ... more 2
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners ... more 31