centos7编译zookeeper报错：Unable to find a javac compiler...解决

问题：

在centos7中使用ant编译zookeeper时报错：

/usr/local/apache-zookeeper-3.5.9/build.xml:328: Unable to find a javac compiler;
com.sun.tools.javac.Main is not on the classpath.
Perhaps JAVA_HOME does not point to the JDK.
It is currently set to "/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.222.b03-1.el7.x86_64/jre"
 

原因：

经排查，原因为未安装jdk开发环境

解决方法，重装jdk及开发包：

1.卸载已安装的openjdk

查看已安装jdk：rpm -qa | grep openjdk 

卸载已安装jdk：rpm -qa | grep openjdk | xargs rpm -e --nodeps

查看是否已卸载：

 

2.重装jdk

安装：yum install java-1.8.0-openjdk
配置环境变量：vim /etc/profile

文件尾追加以下代码：

 配置文件生效：source /etc/profile

3.安装jdk开发环境

yum install java-1.8.0-openjdk-devel.x86_64

查看安装目录内容如下