http://www.cnblogs.com/1693977889zz/archive/2018/04/06/8726920.html
在bin文件夹里打开此文件setclasspath.bat
举例rem Make sure prerequisite environment variables are set下如果为空的话(加)
set JAVA_HOME=C:Program FilesJavajdk1.8.0_131
set JRE_HOME=C:Program FilesJavajdk1.8.0_131jre