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## org.springframework.web.servlet.handler
Class UserRoleAuthorizationInterceptor

    java.lang.Object
      org.springframework.web.servlet.handler.HandlerInterceptorAdapter
          org.springframework.web.servlet.handler.UserRoleAuthorizationInterceptor

All Implemented Interfaces:
  HandlerInterceptor

    public class UserRoleAuthorizationInterceptor

extends HandlerInterceptorAdapter

Interceptor that checks the authorization of the current user via the user's roles, as evaluated by HttpServletRequest's isUserInRole method.

Since:
  20.06.2003
Author:
  Juergen Hoeller
See Also:
  `HttpServletRequest.isUserInRole(java.lang.String)`

Constructor Summary
`UserRoleAuthorizationInterceptor()`

Method Summary
`protected void` | `handleNotAuthorized(HttpServletRequest request, HttpServletResponse response, Object handler)` Handle a request that is not authorized according to this interceptor.
`boolean` | `preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)` This implementation always returns `true`.
`void` | `setAuthorizedRoles(String[] authorizedRoles)` Set the roles that this interceptor should treat as authorized.

Methods inherited from class org.springframework.web.servlet.handler.HandlerInterceptorAdapter
`afterCompletion, postHandle`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### UserRoleAuthorizationInterceptor

    public UserRoleAuthorizationInterceptor()

Method Detail

### setAuthorizedRoles

    public final void setAuthorizedRoles(String[] authorizedRoles)

  Set the roles that this interceptor should treat as authorized.

  Parameters:
    `authorizedRoles` - array of role names

### preHandle

    public final boolean preHandle(HttpServletRequest request,
                                   HttpServletResponse response,
                                   Object handler)
                            throws ServletException,
                                   IOException

  Description copied from class: `HandlerInterceptorAdapter`
  This implementation always returns `true`.

  Specified by:
    `preHandle` in interface `HandlerInterceptor`
  Overrides:
    `preHandle` in class `HandlerInterceptorAdapter`
  Parameters:
    `request` - current HTTP request
    `response` - current HTTP response
    `handler` - chosen handler to execute, for type and/or instance evaluation
  Returns:
    `true` if the execution chain should proceed with the next interceptor or the handler itself. Else, DispatcherServlet assumes that this interceptor has already dealt with the response itself.
  Throws:
    `ServletException`
    `IOException`

### handleNotAuthorized

    protected void handleNotAuthorized(HttpServletRequest request,
                                       HttpServletResponse response,
                                       Object handler)
                                throws ServletException,
                                       IOException

  Handle a request that is not authorized according to this interceptor. Default implementation sends HTTP status code 403 ("forbidden").

  This method can be overridden to write a custom message, forward or redirect to some error page or login page, or throw a ServletException.

  Parameters:
    `request` - current HTTP request
    `response` - current HTTP response
    `handler` - chosen handler to execute, for type and/or instance evaluation
  Throws:
    `ServletException` - if there is an internal error
    `IOException` - in case of an I/O error when writing the response

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