Go语言视频零基础入门到精通

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1.如果运行程序出现错误：“Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory”，这是因为项目缺少slf4j-api.jar和slf4j-log4j12.jar这两个jar包导致的错误。
2.如果运行程序出现错误：“java.lang.NoClassDefFoundError: org/apache/log4j/LogManager”，这是因为项目缺少log4j.jar这个jar包
3.错误：“Exception in thread "main" java.lang.NoSuchMethodError: org.slf4j.MDC.getCopyOfContextMap()Ljava/util/Map”，这是因为jar包版本冲突造成的。
slf4j-log4j12.jar版本信息：

1. Manifest-Version: 1.0
2. Archiver-Version: Plexus Archiver
3. Created-By: Apache Maven
4. Built-By: ceki
5. Build-Jdk: 1.5.0_06
6. Bundle-Description: The slf4j log4j-12 binding
7. Bundle-Version: 1.3.1
8. Implementation-Version: 1.4.2
9. Implementation-Title: slf4j-log4j12
10. Bundle-ManifestVersion: 2
11. Bundle-SymbolicName: slf4j.log4j12
12. Bundle-Name: slf4j-log4j12
13. Bundle-Vendor: SLF4J.ORG
14. Export-Package: org.slf4j.impl;version=1.3.1
15. Import-Package: org.slf4j;version="[1.3,1.4)", org.slf4j.spi;version="
16. [1.3,1.4)", org.slf4j.helpers;version="[1.3,1.4)", org.apache.log4j

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slf4j-api.jar版本信息：

1. Manifest-Version: 1.0
2. Archiver-Version: Plexus Archiver
3. Created-By: Apache Maven
4. Built-By: ceki
5. Build-Jdk: 1.5.0_06
6. Bundle-Description: The slf4j API
7. Bundle-Version: 1.3.1
8. Implementation-Version: 1.4.2
9. Implementation-Title: slf4j-api
10. Bundle-ManifestVersion: 2
11. Bundle-SymbolicName: slf4j.api
12. Bundle-Name: slf4j-api
13. Bundle-Vendor: SLF4J.ORG
14. Export-Package: org.slf4j;version=1.3.1, org.slf4j.spi;version=1.3.1,
15. org.slf4j.helpers;version=1.3.1
16. Import-Package: org.slf4j.impl;version="[1.3,1.4)"

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log4j.jar版本信息：

1. Manifest-Version: 1.0
2. Ant-Version: Apache Ant 1.6.5
3. Created-By: 1.3.1_18-b01 (Sun Microsystems Inc.)
5. Name: org/apache/log4j/
6. Implementation-Title: log4j
7. Implementation-Version: 1.2.14
8. Implementation-Vendor: "Apache Software Foundation"

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后来将log4j.jar版本从上面的1.2.14换到1.2.11

1. Manifest-Version: 1.0
2. Ant-Version: Apache Ant 1.6.4
3. Created-By: 1.4.2_06-b03 (Sun Microsystems Inc.)
5. Name: org/apache/log4j/
6. Implementation-Title: log4j
7. Implementation-Version: 1.2.11
8. Implementation-Vendor: "Apache Software Foundation"

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就不再出现“Exception in thread "main" java.lang.NoSuchMethodError: org.slf4j.MDC.getCopyOfContextMap()Ljava/util/Map”错误了。
4.ActiveMQ错误：Wire format negociation timeout: peer did not send his wire format.
官方解释：http://activemq.apache.org/javaxjmsjmsexception-wire-format-negociation-timeout-peer-did-not-send-his-wire-format.html
我出现这样的错误主要是因为ActiveMQ与slf4j的版本有冲突，我原先使用的是以前一种用的slf4j-1.4。后来看apache-activemq-5.5.1\lib目录下有slf4j-api-1.5.11.jar、slf4j-log4j12-1.5.11.jar和log4j-1.2.14.jar。我想这几个jar应该是和ActiveMQ匹配的，就使用了这三个jar，最终错误解决。