https://issues.apache.org/bugzilla/show_bug.cgi?id=57527
Bug ID: 57527
Summary: java.lang.NullPointerException: null at at
org.apache.catalina.connector.Request.getContextPath(R
equest.java:1918)
Product: Tomcat 8
Version: 8.0.15
Hardware: Other
OS: Linux
Status: NEW
Severity: major
Priority: P2
Component: Catalina
Assignee: [email protected]
Reporter: [email protected]
occasionally, tomcat will throw this error.
I am not sure whether it is same bug as this one:
https://issues.apache.org/bugzilla/show_bug.cgi?id=56840
although the stack trace originated from apache Shiro framework.but it seems
irrelevant:
17:40:43.804 [http-nio-28443-exec-4] WARN o.a.shiro.mgt.DefaultSecurityManager
- Delegate RememberMeManager instance of type
[org.apache.shiro.web.mgt.CookieRememberMeManager] threw an exception during
onLogout for subject with principals [andson]
java.lang.NullPointerException: null
at
org.apache.catalina.connector.Request.getContextPath(Request.java:1918)
~[catalina.jar:8.0.15]
at
org.apache.catalina.connector.RequestFacade.getContextPath(RequestFacade.java:783)
~[catalina.jar:8.0.15]
at
javax.servlet.http.HttpServletRequestWrapper.getContextPath(HttpServletRequestWrapper.java:150)
~[servlet-api.jar:na]
at
javax.servlet.http.HttpServletRequestWrapper.getContextPath(HttpServletRequestWrapper.java:150)
~[servlet-api.jar:na]
at
org.apache.shiro.web.servlet.SimpleCookie.calculatePath(SimpleCookie.java:192)
~[shiro-web-1.2.2.jar:1.2.2]
at
org.apache.shiro.web.servlet.SimpleCookie.removeFrom(SimpleCookie.java:349)
~[shiro-web-1.2.2.jar:1.2.2]
at
org.apache.shiro.web.mgt.CookieRememberMeManager.forgetIdentity(CookieRememberMeManager.java:288)
~[shiro-web-1.2.2.jar:1.2.2]
at
org.apache.shiro.web.mgt.CookieRememberMeManager.forgetIdentity(CookieRememberMeManager.java:260)
~[shiro-web-1.2.2.jar:1.2.2]
at
org.apache.shiro.mgt.AbstractRememberMeManager.onLogout(AbstractRememberMeManager.java:537)
~[shiro-core-1.2.2.jar:1.2.2]
at
org.apache.shiro.mgt.DefaultSecurityManager.rememberMeLogout(DefaultSecurityManager.java:244)
[shiro-core-1.2.2.jar:1.2.2]
at
org.apache.shiro.mgt.DefaultSecurityManager.beforeLogout(DefaultSecurityManager.java:299)
[shiro-core-1.2.2.jar:1.2.2]
at
org.apache.shiro.web.mgt.DefaultWebSecurityManager.beforeLogout(DefaultWebSecurityManager.java:240)
[shiro-web-1.2.2.jar:1.2.2]
at
org.apache.shiro.mgt.DefaultSecurityManager.logout(DefaultSecurityManager.java:545)
[shiro-core-1.2.2.jar:1.2.2]
at
org.apache.shiro.subject.support.DelegatingSubject.logout(DelegatingSubject.java:363)
[shiro-core-1.2.2.jar:1.2.2]
......
from source :
org.apache.catalina.connector.Request:
public String More ...getContextPath() {
String uri = getRequestURI();
.....
return uri.substring(0, pos); ---》 NullPointerException
}
public String getRequestURI() {
return coyoteRequest.requestURI().toString();
}
org.apache.coyote.Request:
public MessageBytes More ...requestURI()
return uriMB;
}
org.apache.tomcat.util.buf.MessageBytes：
public String More ...toString() {
156 if( hasStrValue ) {
157 return strValue;
158 }
159
160 switch (type) {
161 case T_CHARS:
162 strValue=charC.toString();
163 hasStrValue=true;
164 return strValue;
165 case T_BYTES:
166 strValue=byteC.toString();
167 hasStrValue=true;
168 return strValue;
169 }
170 return null;
171 }
BUT the uriMB's type is initialized as T_NULL which will cause toString return
null!! anything I miss?
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