slf4j

0102-aop

拜拜、爱过 提交于 2020-01-07 00:56:01
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 背景 aop的概念很多,比如切点,通知,连接点,引入,织入等;实际上这是一种约定的流程; 约定编程 https://github.com/carterbrother/springbootpractice/tree/master/demo-aop aop编程 也是按照一定规则,按照一定 流程来约定编程的; 典型场景 数据库事物 提取固定 流程,把变化的部分织入到流程中即可; 概念 连接点(join point) : 即方法 切点 (point cut): 连接点的范围,哪些方法; 通知(advice): 分为前置通知,后置通知,环绕通知,正常返回通知,异常返回通知 目标对象(target) :被代理对象 引入(introduction): 引入新的类和方法,增强现有的bean的功能 织入(weaving): 通过代理技术,为原有对象生成代理对象 切面(aspect) : 可以定义切点,各类通知和引用的内容 springboot的aop的使用 @Aspect 申明切面 通知里面放切点: @Before 前置通知 @After 后置通知 @AfterReturn @AfterThrowning @Around @Pointcut 定义切点 切点的指示器: 通知中的参数: ProceedingJoinPoint jp

Why are log files commonly flat?

冷暖自知 提交于 2020-01-06 03:03:06
问题 Are log files not meant to be read by machines but by users only? I wonder if there are file appenders for any logging framework that write their output to XML. 回答1: "Logging to XML" is quite a general requirement, because there is no such thing as the standard log file format. But since XML files are text files, which logging frameworks can write, and since many of those frameworks allow configuring log line format, I see no problem in defining your log output with XML tags of choice. For

play framework 2.1.x test conflict with slf4j-api

狂风中的少年 提交于 2020-01-06 01:31:53
问题 i've got a Play Framework 2.1.0 application, and even the simplest unit test will not run due to a system problem i'm struggling to track down. given this route: POST /foo/bar controllers.FooBar.test() ...i've got a simple test to verify that the route exists: @Test public void fooBarRouteExists() { running(fakeApplication(fakeGlobal()), new Runnable() { @Override public void run() { final Result result = route(fakeRequest(POST, "/foo/bar")); assertThat(result).isNotNull(); } }); } ...which

play framework 2.1.x test conflict with slf4j-api

和自甴很熟 提交于 2020-01-06 01:31:30
问题 i've got a Play Framework 2.1.0 application, and even the simplest unit test will not run due to a system problem i'm struggling to track down. given this route: POST /foo/bar controllers.FooBar.test() ...i've got a simple test to verify that the route exists: @Test public void fooBarRouteExists() { running(fakeApplication(fakeGlobal()), new Runnable() { @Override public void run() { final Result result = route(fakeRequest(POST, "/foo/bar")); assertThat(result).isNotNull(); } }); } ...which

How to avoid multiple log files in slf4j logging?

折月煮酒 提交于 2020-01-05 09:26:42
问题 I am implementing SLF4J logging with logback.xml but application is creating multiple log files. I need to create one single log file for a date with all the log levels in same log files. Below is my logback.xml configuration. <?xml version="1.0" encoding="UTF-8"?> <configuration> <property name="LOG_FILE_LOCATION" value="./log/" /> <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender"> <layout class="ch.qos.logback.classic.PatternLayout"> <Pattern>[%d{yyyy-MM-dd HH:mm:ss}] [

websphere classloader gives java.lang.LinkageError when loading slf4j LoggerFactory

南笙酒味 提交于 2020-01-05 08:55:13
问题 [I originally posted this on the websphere forums bot didn't see a timely response. I'm re-posting here with slightly more content] The Problem I added a jar (call it "Foo.jar") to our enterprise application (i.e. ".ear"), created the manifest entry, etc., and found, to my surprise, that when my EJB instantiated FooClient, websphere threw a java.lang.LinkageError upon org.slf4j.LoggerFactory I've added classloader debugging to the trace and did not find much. I was hoping to see "where WAS

NoSuchMethodError with slfj4

走远了吗. 提交于 2020-01-05 07:24:52
问题 I'm trying to use Solr with slfj4 and logback, and when I shut down Solr with CTRL+C, I get this error: java.lang.NoSuchMethodError: org.slf4j.spi.LocationAwareLogger.log(Lorg/slf4j/Marker;Ljava/lang/String;ILjava/lang/String;[Ljava/lang/Object;Ljava/lang/Throwable;)V This doesn't happen during compile time. I've checked the method signature for org.slf4j.spi.LocationAwareLogger.log in version 1.6.4, and it seems to be correct: public void log(Marker marker, String fqcn, int level, String

NoSuchMethodError with slfj4

天涯浪子 提交于 2020-01-05 07:23:26
问题 I'm trying to use Solr with slfj4 and logback, and when I shut down Solr with CTRL+C, I get this error: java.lang.NoSuchMethodError: org.slf4j.spi.LocationAwareLogger.log(Lorg/slf4j/Marker;Ljava/lang/String;ILjava/lang/String;[Ljava/lang/Object;Ljava/lang/Throwable;)V This doesn't happen during compile time. I've checked the method signature for org.slf4j.spi.LocationAwareLogger.log in version 1.6.4, and it seems to be correct: public void log(Marker marker, String fqcn, int level, String

logback doesn't print method or line number

点点圈 提交于 2020-01-05 07:12:42
问题 This is in a Gradle project using Groovy for the app code as well as test code. But I'm using a logback.xml file for configuration. One factor here that may be significant is that I am using the Groovy @Slf4j annotation to provide a logger. The %method and %line conversion words usually get printed out as "invoke" and "-1" respectively (although sometimes "invoke0" with "-2"). Interestingly, it does sometimes print the method and number: for example when it's an ERROR level log with an

multiple root loggers with logback conditionals

一笑奈何 提交于 2020-01-04 04:05:32
问题 referring to: Logback's Configuration my configuration can contain ...at most one <root> element... but then later in the same doc, when discussing conditionals, I see this: <configuration debug="true"> <if condition='property("HOSTNAME").contains("torino")'> <then> <appender name="CON" class="ch.qos.logback.core.ConsoleAppender"> <encoder> <pattern>%d %-5level %logger{35} - %msg %n</pattern> </encoder> </appender> <root> <------ root logger #1 <appender-ref ref="CON" /> </root> </then> </if>