Web app root system property already set to different value 错误
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使用c3p0时出现:
Web app root system property already set to different value
需要加上
<context-param>
<param-name>webAppRootKey</param-name>
<param-value>web</param-value>
</context-param>
从代码看出,该方法其实就是把该web application的根目录的绝对文件路径作为属性保存在 System的属性列表中。
该属性的名字,由web.xml文件中的名为"webAppRootKey"的参数值指出。
如果不在web.xml中定义 webAppRootKey参数,那么属性名就是缺省的"webapp.root".在我们的petclinic项目中已经定义了 webAppRootKey参数,其值为"petclinic.root",因此,属性的名字就是"petclinic.root".
最后将webAppRootKey项配置好,错误解决。阅读全文
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