jenkins启动构建 neither the java_home nor the jre_home environment variable is defined

描述：构建时文件没有传输过去，控制台报以下错误

SSH: Connecting from host [localhost.localdomain]
SSH: Connecting with configuration [tomcat-服务器] ...
SSH: EXEC: STDOUT/STDERR from command [/webdir/tomcat/bin/startup.sh] ...
Neither the JAVA_HOME nor the JRE_HOME environment variable is defined
At least one of these environment variable is needed to run this program
SSH: EXEC: completed after 201 ms
SSH: Disconnecting configuration [tomcat-服务器] ...
ERROR: Exception when publishing, exception message [Exec exit status not zero. Status [1]]
Parsing POMs

原因：找不到tomcat服务器的jdk，实际上tomcat已经配好环境变量了，怀疑是jenkins没找到，故将jdk/bin目录下的文件链接到/usr/bin/，重启Jenkins，正常使用

ln -s /usr/local/jdk1.8/bin/* /usr/bin/

 再次运行,成功

SSH: Connecting from host [localhost.localdomain]
SSH: Connecting with configuration [tomcat-服务器] ...
SSH: EXEC: STDOUT/STDERR from command [/webdir/tomcat/bin/startup.sh] ...
Tomcat started.
SSH: EXEC: completed after 201 ms
SSH: Disconnecting configuration [tomcat-服务器] ...
SSH: Transferred 1 file(s)
Parsing POMs

另外，在Jenkins里面也要配jdk