第三章，回家[第6页/共6页]

sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:190)

java.lang.StringIndexOutOfBoundsException: String index out of range: -10