LoggerFactory.getLogger的用法

Logger类下有多个不同的error方法，根据传入参数的个数及类型的不同，自动选择不同的重载方法。
使用+，只打印异常，不打印堆栈信息

private static final Logger logger = LoggerFactory.getLogger(LoggerTest.class);
    @Test
    public void logEorrorTest(){

        try {
            int a=0;
            int c = 5/a;
            System.out.println(c);
        }catch (Exception e){
//            使用“+”，知打印异常，不打堆栈信息
            logger.error("use + : "+e);
        }

    }
}

输出：

11:17:40.068 [main] ERROR c.p.b.LoggerTest - use + : java.lang.ArithmeticException: / by zero

使用“,”，打印堆栈信息

private static final Logger logger = LoggerFactory.getLogger(LoggerTest.class);
    @Test
    public void logEorrorTest(){

        try {
            int a=0;
            int c = 5/a;
            System.out.println(c);
        }catch (Exception e){
//            使用“,”，只打印异常，不打堆栈信息
            logger.error("use , : ",e);
        }

    }

输出：

java.lang.ArithmeticException: / by zero
	at com.pingan.bank.LoggerTest.logEorrorTest(LoggerTest.java:14)
	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:47)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

使用分隔符,第二个参数为Throwable,会发现分隔符没有起作用

private static final Logger logger = LoggerFactory.getLogger(LoggerTest.class);
    @Test
    public void logEorrorTest(){

        try {
            int a=0;
            int c = 5/a;
            System.out.println(c);
        }catch (Exception e){
//            使用“{}”分隔符，不起作用
            logger.error("use , : {}",e);
        }

    }

输出：

11:24:34.082 [main] ERROR c.p.b.LoggerTest - use , : {}
java.lang.ArithmeticException: / by zero
	at com.pingan.bank.LoggerTest.logEorrorTest(LoggerTest.java:14)
	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:47)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

使用分隔符,第二个参数为Object,会发现分隔符起作用

private static final Logger logger = LoggerFactory.getLogger(LoggerTest.class);
    @Test
    public void logEorrorTest(){

        try {
            int a=0;
            int c = 5/a;
            System.out.println(c);
        }catch (Exception e){
//            第二个参数为Oject类，分割符起作用
            logger.error("use , : {}","end");
        }

    }

输出：

11:27:07.019 [main] ERROR c.p.b.LoggerTest - use , : end