Tomcat的那些坑之user.home使用
下文的X指的是对应的版本号，比如tomcat6、tomcat7、tomcat8
debian的tomcat安装后，在tomcat容器中获取user.*，比如 System.getProperty(“user.home”) ,获取的地址是/usr/share/tomcatX/。 如果程序在运行过程中使用默认user.home目录进行读写，将会提示权限错误的异常，原因就是目录默认的所有者是root，而tomcat启动用户是tomcatX,无法正常读写user.home。
以dubbo举例，错误异常通常是：
[27/06/16 07:45:09:009 CST] localhost-startStop-1 ERROR logger.Logger: [DUBBO] Failed to init remote service reference at filed registry in class com.handu.open.dubbo.monitor.RegistryContainer, cause: Invalid registry store file /usr/share/tomcat7/.dubbo/dubbo-registry-
10.234.99.247.cache, cause: Failed to create directory /usr/share/tomcat7/.dubbo!, dubbo version: 2.5.3, current host: 127.0.0.1
java.lang.IllegalArgumentException: Invalid registry store file /usr/share/tomcat7/.dubbo/dubbo-registry-10.234.99.247.cache, cause: Failed to create directory /usr/share/tomcat7/.dubbo!
at com.alibaba.dubbo.registry.support.AbstractRegistry.<init>(AbstractRegistry.java:100)
at com.alibaba.dubbo.registry.support.FailbackRegistry.<init>(FailbackRegistry.java:61)
解决方法：
- 对usr/share/tomcatX更改用户，
chown -R tomcatX:tomcatX /usr/share/tomcatX - 【推荐】程序不要依赖系统默认的
user.home，设置为可配置或默认在启动类目录下。
vcoolwind
/
/ - views
Published under(CC) BY-NC-SA 3.0 CN.