基于Web的Kafka管理器工具之Kafka-manager启动时出现Exception in thread "main" java.lang.UnsupportedClassVersionError错误解决办法（图文详解）

　　不多说，直接上干货！

　　前期博客

基于Web的Kafka管理器工具之Kafka-manager的编译部署详细安装 (支持kafka0.8、0.9和0.10以后版本)（图文详解）

 

问题详情

　　我在Kafka-manager启动时出现

[hadoop@master kafka-manager-1.3.2.1]$ nohup bin/kafka-manager  -Dconfig.file=/home/hadoop/app/kafka-manager-1.3.2.1/conf/application.conf -Dhttp.port=10000 &
[1] 5930
[hadoop@master kafka-manager-1.3.2.1]$ nohup: ignoring input and appending output to `nohup.out'

[1]+  Exit 1                  nohup bin/kafka-manager -Dconfig.file=/home/hadoop/app/kafka-manager-1.3.2.1/conf/application.conf -Dhttp.port=10000
[hadoop@master kafka-manager-1.3.2.1]$ ll
total 36
drwxrwxr-x 2 hadoop hadoop  4096 Jul 28 20:51 bin
drwxrwxr-x 2 hadoop hadoop  4096 Jul 28 21:00 conf
drwxrwxr-x 2 hadoop hadoop 12288 Jul 28 20:51 lib
-rw------- 1 hadoop hadoop  1179 Jul 28 21:03 nohup.out
-rw-r--r-- 1 hadoop hadoop  6323 Feb 22 08:55 README.md
drwxrwxr-x 3 hadoop hadoop  4096 Jul 28 20:51 share
[hadoop@master kafka-manager-1.3.2.1]$ cat nohup.out
Exception in thread "main" java.lang.UnsupportedClassVersionError: com/typesafe/config/ConfigException : Unsupported major.minor version 52.0
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    at play.core.server.ProdServerStart$.readServerConfigSettings(ProdServerStart.scala:81)
    at play.core.server.ProdServerStart$.start(ProdServerStart.scala:42)
    at play.core.server.ProdServerStart$.main(ProdServerStart.scala:27)
    at play.core.server.ProdServerStart.main(ProdServerStart.scala)
[hadoop@master kafka-manager-1.3.2.1]$ ll

解决办法

　　若大家，还不会建立软连接，则见我下面的博客

大数据各子项目的环境搭建之建立与删除软连接（博主推荐）

drwxrwxr-x.  8 hadoop hadoop 4096 Jul 26 08:14 hive-1.0.0
lrwxrwxrwx.  1 hadoop hadoop   11 Apr 12 10:18 jdk -> jdk1.7.0_79
drwxr-xr-x.  8 hadoop hadoop 4096 Apr 11  2015 jdk1.7.0_79
drwxr-xr-x.  8 hadoop hadoop 4096 Aug  5  2015 jdk1.8.0_60
lrwxrwxrwx   1 hadoop hadoop   19 Jul 27 17:27 kafka -> kafka_2.10-0.9.0.1/
drwxr-xr-x   7 hadoop hadoop 4096 Jul 28 19:55 kafka_2.10-0.9.0.1
drwxr-xr-x   6 hadoop hadoop 4096 May  3 22:01 kafka_2.11-0.8.2.2
drwxrwxr-x   6 hadoop hadoop 4096 Jul 28 21:03 kafka-manager-1.3.2.1
lrwxrwxrwx   1 hadoop hadoop   26 Apr 21 22:18 kibana -> kibana-4.6.3-linux-x86_64/
drwxrwxr-x  11 hadoop hadoop 4096 Nov  4  2016 kibana-4.6.3-linux-x86_64
lrwxrwxrwx   1 hadoop hadoop   37 Jul  3 22:18 phoenix -> apache-phoenix-4.10.0-HBase-0.98-bin/
lrwxrwxrwx   1 hadoop hadoop   13 Jun  8 09:44 scala -> scala-2.11.8/
drwxrwxr-x   9 hadoop hadoop 4096 Feb 27  2015 scala-2.10.5
drwxrwxr-x   6 hadoop hadoop 4096 Mar  4  2016 scala-2.11.8
lrwxrwxrwx   1 hadoop hadoop   12 May  1 19:35 snappy -> snappy-1.1.3
drwxr-xr-x   6 hadoop hadoop 4096 May  1 19:40 snappy-1.1.3
lrwxrwxrwx   1 hadoop hadoop   26 Jun  8 00:39 spark -> spark-1.6.1-bin-hadoop2.6/
drwxr-xr-x  12 hadoop hadoop 4096 Feb 27  2016 spark-1.6.1-bin-hadoop2.6
lrwxrwxrwx.  1 hadoop hadoop   11 Apr 12 11:28 sqoop -> sqoop-1.4.6
drwxr-xr-x.  9 hadoop hadoop 4096 May 19 10:31 sqoop-1.4.6
lrwxrwxrwx   1 hadoop hadoop   19 May 21 17:21 storm -> apache-storm-1.0.2/
lrwxrwxrwx   1 hadoop hadoop   34 Jun  8 11:20 zeppelin -> zeppelin-0.5.6-incubating-bin-all/
drwxr-xr-x  11 hadoop hadoop 4096 Jun  8 11:33 zeppelin-0.5.6-incubating-bin-all
lrwxrwxrwx.  1 hadoop hadoop   15 Apr 12 11:28 zookeeper -> zookeeper-3.4.6
drwxr-xr-x. 10 hadoop hadoop 4096 Apr 12 17:13 zookeeper-3.4.6
[hadoop@master app]$ rm -rf jdk
[hadoop@master app]$ ln -s jdk1.8.0_60/ jdk
[hadoop@master app]$ 

　　然后，再次打开，即可

http://192.168.80.145:10000/

　　或者

http://master:10000/