@Override
protected HandlerExecutionChain getHandlerExecutionChain(
Object handler, HttpServletRequest request) {
HandlerExecutionChain chain = super.getHandlerExecutionChain(handler, request);
HandlerInterceptor[] interceptors = addSecurityInterceptor(chain.getInterceptors());
return new HandlerExecutionChain(chain.getHandler(), interceptors);
}
public void testWithRootAsBasePackage() throws Exception {
MockHttpServletRequest request =
new MockHttpServletRequest(
"GET", "/myapp/org/springframework/web/servlet/mvc/mapping/welcome");
HandlerExecutionChain chain = this.hm4.getHandler(request);
assertEquals(this.wac.getBean("welcome"), chain.getHandler());
}
/**
* Test routes: GET /wildcard-a myTestController.wildcardA GET /wildcard-b
* myTestController.wildcardB
*
* @throws Exception
*/
@Test
public void wildcardRouteFiles() throws Exception {
MockHttpServletRequest request = new MockHttpServletRequest("GET", "/wildcard-a");
request.addHeader("host", sampleHost);
HandlerExecutionChain chain = this.hm.getHandler(request);
RouterHandler handler = (RouterHandler) chain.getHandler();
Assert.assertNotNull(handler);
Route route = handler.getRoute();
Assert.assertNotNull(route);
Assert.assertEquals(this.handlerName + ".wildcardA", route.action);
request = new MockHttpServletRequest("GET", "/wildcard-b");
request.addHeader("host", sampleHost);
chain = this.hm.getHandler(request);
handler = (RouterHandler) chain.getHandler();
Assert.assertNotNull(handler);
route = handler.getRoute();
Assert.assertNotNull(route);
Assert.assertEquals(this.handlerName + ".wildcardB", route.action);
}
public void testIndexUri() throws Exception {
MockHttpServletRequest request = new MockHttpServletRequest("GET", "/index");
HandlerExecutionChain chain = this.hm.getHandler(request);
assertEquals(this.wac.getBean("index"), chain.getHandler());
request = new MockHttpServletRequest("GET", "/index/product");
chain = this.hm.getHandler(request);
assertEquals(this.wac.getBean("index"), chain.getHandler());
}
public void testMapSimpleUri() throws Exception {
MockHttpServletRequest request = new MockHttpServletRequest("GET", "/welcome");
HandlerExecutionChain chain = this.hm.getHandler(request);
assertEquals(this.wac.getBean("welcome"), chain.getHandler());
request = new MockHttpServletRequest("GET", "/welcome/product");
chain = this.hm.getHandler(request);
assertEquals(this.wac.getBean("welcome"), chain.getHandler());
}
public void testWithMultiActionControllerMapping() throws Exception {
MockHttpServletRequest request = new MockHttpServletRequest("GET", "/admin/user");
HandlerExecutionChain chain = this.hm.getHandler(request);
assertEquals(this.wac.getBean("admin"), chain.getHandler());
request = new MockHttpServletRequest("GET", "/admin/product");
chain = this.hm.getHandler(request);
assertEquals(this.wac.getBean("admin"), chain.getHandler());
}
public void testWithoutControllerSuffix() throws Exception {
MockHttpServletRequest request = new MockHttpServletRequest("GET", "/buyform");
HandlerExecutionChain chain = this.hm.getHandler(request);
assertEquals(this.wac.getBean("buy"), chain.getHandler());
request = new MockHttpServletRequest("GET", "/buyform/product");
chain = this.hm.getHandler(request);
assertEquals(this.wac.getBean("buy"), chain.getHandler());
}
@Override
protected HandlerExecutionChain getHandler(HttpServletRequest request) throws Exception {
HandlerExecutionChain chain = super.getHandler(request);
if (chain != null) {
DefaultMvcResult mvcResult = getMvcResult(request);
mvcResult.setHandler(chain.getHandler());
mvcResult.setInterceptors(chain.getInterceptors());
}
return chain;
}
public ModelAndView excuteAction(HttpServletRequest request, HttpServletResponse response)
throws Exception {
// 这里需要声明request的实际类型，否则会报错
request.setAttribute(HandlerMapping.INTROSPECT_TYPE_LEVEL_MAPPING, true);
HandlerExecutionChain chain = handlerMapping.getHandler(request);
ModelAndView model = null;
try {
model = handlerAdapter.handle(request, response, chain.getHandler());
} catch (Exception e) {
e.printStackTrace();
}
return model;
}
@Test
public void requestMappingHandlerMapping() throws Exception {
StaticWebApplicationContext cxt = new StaticWebApplicationContext();
cxt.registerSingleton("controller", TestController.class);
RequestMappingHandlerMapping handlerMapping = mvcConfiguration.requestMappingHandlerMapping();
assertEquals(0, handlerMapping.getOrder());
handlerMapping.setApplicationContext(cxt);
HandlerExecutionChain chain = handlerMapping.getHandler(new MockHttpServletRequest("GET", "/"));
assertNotNull(chain.getInterceptors());
assertEquals(ConversionServiceExposingInterceptor.class, chain.getInterceptors()[0].getClass());
}
/**
* Test route: GET /caseinsensitive MyTestCONTROLLER.caseInsensitive
*
* @throws Exception
*/
@Test
public void caseInsensitiveRoute() throws Exception {
MockHttpServletRequest request = new MockHttpServletRequest("GET", "/caseinsensitive");
request.addHeader("host", sampleHost);
HandlerExecutionChain chain = this.hm.getHandler(request);
RouterHandler handler = (RouterHandler) chain.getHandler();
Assert.assertNotNull(handler);
Route route = handler.getRoute();
Assert.assertNotNull(route);
Assert.assertTrue((this.handlerName + ".caseInsensitive").equalsIgnoreCase(route.action));
}
/**
* Test route: GET /simpleaction myTestController.simpleAction
*
* @throws Exception
*/
@Test
public void testSimpleRoute() throws Exception {
MockHttpServletRequest request = new MockHttpServletRequest("GET", "/simpleaction");
request.addHeader("host", sampleHost);
HandlerExecutionChain chain = this.hm.getHandler(request);
RouterHandler handler = (RouterHandler) chain.getHandler();
Assert.assertNotNull(handler);
Route route = handler.getRoute();
Assert.assertNotNull(route);
Assert.assertEquals(this.handlerName + ".simpleAction", route.action);
}
/**
* Test route: PUT /http myTestController.httpAction(type:'PUT') with a GET request and a
* "x-http-method-override" argument in queryString
*
* @throws Exception
*/
@Test
public void testOverrideQueryStringHTTPAction() throws Exception {
MockHttpServletRequest request = new MockHttpServletRequest("GET", "/http");
request.setQueryString("x-http-method-override=PUT");
request.addHeader("host", sampleHost);
HandlerExecutionChain chain = this.hm.getHandler(request);
RouterHandler handler = (RouterHandler) chain.getHandler();
Assert.assertNotNull(handler);
Route route = handler.getRoute();
Assert.assertNotNull(route);
Assert.assertEquals(this.handlerName + ".httpAction", route.action);
}
/**
* Passes the given request to a proper controller.
*
* @param request
* @return
* @throws Exception
*/
public MockHttpServletResponse handle(HttpServletRequest request) throws Exception {
MockHttpServletResponse response = new MockHttpServletResponse();
HandlerExecutionChain handlerExecutionChain = null;
for (DefaultAnnotationHandlerMapping handlerMapping : handlerMappings) {
handlerExecutionChain = handlerMapping.getHandler(request);
if (handlerExecutionChain != null) {
break;
}
}
Assert.assertNotNull("The request URI does not exist", handlerExecutionChain);
handlerAdapter.handle(request, response, handlerExecutionChain.getHandler());
return response;
}
@Test
public void beanNameHandlerMapping() throws Exception {
StaticWebApplicationContext cxt = new StaticWebApplicationContext();
cxt.registerSingleton("/controller", TestController.class);
HttpServletRequest request = new MockHttpServletRequest("GET", "/controller");
BeanNameUrlHandlerMapping handlerMapping = mvcConfiguration.beanNameHandlerMapping();
assertEquals(2, handlerMapping.getOrder());
handlerMapping.setApplicationContext(cxt);
HandlerExecutionChain chain = handlerMapping.getHandler(request);
assertNotNull(chain.getInterceptors());
assertEquals(2, chain.getInterceptors().length);
assertEquals(ConversionServiceExposingInterceptor.class, chain.getInterceptors()[1].getClass());
}
/**
* This method finds the handler for a given request URI, or throws an exception if none were
* found.
*
* <p>It will also ensure that the URI Parameters i.e. /context/test/{name} are added to the
* request
*
* @param request the request for which to find a handler
* @return The handler that agreed to handle the specified request.
* @throws NoSuchMethodException if no acceptable handlers could be found
*/
protected Object getHandler(final MockHttpServletRequest request) throws NoSuchMethodException {
HandlerExecutionChain chain = null; // NOPMD by jon.adams on 5/14/12
final Map<String, HandlerMapping> map = applicationContext.getBeansOfType(HandlerMapping.class);
final Iterator<HandlerMapping> itt = map.values().iterator();
while (itt.hasNext()) {
final HandlerMapping mapping = itt.next();
try {
chain = mapping.getHandler(request);
} catch (final HttpRequestMethodNotSupportedException exc) {
// ignore and try next
LOGGER.info(
mapping.getClass().getName()
+ " handler determined it will not handle the request. Message: "
+ exc.getMessage(),
exc);
} catch (final Exception exc) {
throw new RuntimeException(exc); // NOPMD
}
if (chain == null) {
// ignore and try next
LOGGER.debug(
mapping.getClass().getName() + " handler determined it will not handle the request.");
} else {
// found one. quit looking for more.
break;
}
}
if (chain == null) {
throw new NoSuchMethodException(
"Unable to find handler for request URI: " + request.getRequestURI());
}
return chain.getHandler();
}
/**
* Trigger afterCompletion callbacks on the mapped HandlerInterceptors. Will just invoke
* afterCompletion for all interceptors whose preHandle invocation has successfully completed and
* returned true.
*
* @param mappedHandler the mapped HandlerExecutionChain
* @param interceptorIndex index of last interceptor that successfully completed
* @param ex Exception thrown on handler execution, or <code>null</code> if none
* @see HandlerInterceptor#afterCompletion
*/
protected void triggerAfterCompletion(
HandlerExecutionChain mappedHandler,
int interceptorIndex,
HttpServletRequest request,
HttpServletResponse response,
Exception ex)
throws Exception {
// Apply afterCompletion methods of registered interceptors.
if (mappedHandler != null) {
if (mappedHandler.getInterceptors() != null) {
for (int i = interceptorIndex; i >= 0; i--) {
HandlerInterceptor interceptor = mappedHandler.getInterceptors()[i];
try {
interceptor.afterCompletion(request, response, mappedHandler.getHandler(), ex);
} catch (Throwable ex2) {
GrailsUtil.deepSanitize(ex2);
logger.error("HandlerInterceptor.afterCompletion threw exception", ex2);
}
}
}
}
}
/**
* Trigger afterCompletion callbacks on the mapped HandlerInterceptors. Will just invoke
* afterCompletion for all interceptors whose preHandle invocation has successfully completed and
* returned true.
*
* @param mappedHandler the mapped HandlerExecutionChain
* @param interceptorIndex index of last interceptor that successfully completed
* @param ex Exception thrown on handler execution, or <code>null</code> if none
* @see HandlerInterceptor#afterCompletion
*/
protected void triggerAfterCompletion(
HandlerExecutionChain mappedHandler,
int interceptorIndex,
HttpServletRequest request,
HttpServletResponse response,
Exception ex)
throws Exception {
if (mappedHandler == null || mappedHandler.getInterceptors() == null) {
return;
}
// Apply afterCompletion methods of registered interceptors.
for (int i = interceptorIndex; i >= 0; i--) {
HandlerInterceptor interceptor = mappedHandler.getInterceptors()[i];
try {
interceptor.afterCompletion(request, response, mappedHandler.getHandler(), ex);
} catch (Throwable e) {
stackFilterer.filter(e, true);
logger.error("HandlerInterceptor.afterCompletion threw exception", e);
}
}
}
public void testWithBasePackageAndCaseSensitive() throws Exception {
MockHttpServletRequest request =
new MockHttpServletRequest("GET", "/myapp/mvc/mapping/buyForm");
HandlerExecutionChain chain = this.hm2.getHandler(request);
assertEquals(this.wac.getBean("buy"), chain.getHandler());
}
public void testWithContextPath() throws Exception {
MockHttpServletRequest request = new MockHttpServletRequest("GET", "/myapp/welcome");
request.setContextPath("/myapp");
HandlerExecutionChain chain = this.hm.getHandler(request);
assertEquals(this.wac.getBean("welcome"), chain.getHandler());
}
@Test
public void webMvcConfigurerExtensionHooks() throws Exception {
StaticWebApplicationContext appCxt = new StaticWebApplicationContext();
appCxt.setServletContext(new MockServletContext(new FileSystemResourceLoader()));
appCxt.registerSingleton("controller", TestController.class);
WebConfig webConfig = new WebConfig();
webConfig.setApplicationContext(appCxt);
webConfig.setServletContext(appCxt.getServletContext());
String actual = webConfig.mvcConversionService().convert(new TestBean(), String.class);
assertEquals("converted", actual);
RequestMappingHandlerAdapter adapter = webConfig.requestMappingHandlerAdapter();
assertEquals(1, adapter.getMessageConverters().size());
ConfigurableWebBindingInitializer initializer =
(ConfigurableWebBindingInitializer) adapter.getWebBindingInitializer();
assertNotNull(initializer);
BeanPropertyBindingResult bindingResult = new BeanPropertyBindingResult(null, "");
initializer.getValidator().validate(null, bindingResult);
assertEquals("invalid", bindingResult.getAllErrors().get(0).getCode());
@SuppressWarnings("unchecked")
List<HandlerMethodArgumentResolver> argResolvers =
(List<HandlerMethodArgumentResolver>)
new DirectFieldAccessor(adapter).getPropertyValue("customArgumentResolvers");
assertEquals(1, argResolvers.size());
@SuppressWarnings("unchecked")
List<HandlerMethodReturnValueHandler> handlers =
(List<HandlerMethodReturnValueHandler>)
new DirectFieldAccessor(adapter).getPropertyValue("customReturnValueHandlers");
assertEquals(1, handlers.size());
HandlerExceptionResolverComposite composite =
(HandlerExceptionResolverComposite) webConfig.handlerExceptionResolver();
assertEquals(1, composite.getExceptionResolvers().size());
RequestMappingHandlerMapping rmHandlerMapping = webConfig.requestMappingHandlerMapping();
rmHandlerMapping.setApplicationContext(appCxt);
HandlerExecutionChain chain =
rmHandlerMapping.getHandler(new MockHttpServletRequest("GET", "/"));
assertNotNull(chain.getInterceptors());
assertEquals(2, chain.getInterceptors().length);
assertEquals(LocaleChangeInterceptor.class, chain.getInterceptors()[0].getClass());
assertEquals(ConversionServiceExposingInterceptor.class, chain.getInterceptors()[1].getClass());
AbstractHandlerMapping handlerMapping =
(AbstractHandlerMapping) webConfig.viewControllerHandlerMapping();
handlerMapping.setApplicationContext(appCxt);
assertNotNull(handlerMapping);
assertEquals(1, handlerMapping.getOrder());
HandlerExecutionChain handler =
handlerMapping.getHandler(new MockHttpServletRequest("GET", "/path"));
assertNotNull(handler.getHandler());
handlerMapping = (AbstractHandlerMapping) webConfig.resourceHandlerMapping();
handlerMapping.setApplicationContext(appCxt);
assertNotNull(handlerMapping);
assertEquals(Integer.MAX_VALUE - 1, handlerMapping.getOrder());
handler = handlerMapping.getHandler(new MockHttpServletRequest("GET", "/resources/foo.gif"));
assertNotNull(handler.getHandler());
handlerMapping = (AbstractHandlerMapping) webConfig.defaultServletHandlerMapping();
handlerMapping.setApplicationContext(appCxt);
assertNotNull(handlerMapping);
assertEquals(Integer.MAX_VALUE, handlerMapping.getOrder());
handler = handlerMapping.getHandler(new MockHttpServletRequest("GET", "/anyPath"));
assertNotNull(handler.getHandler());
}
public void testWithFullBasePackage() throws Exception {
MockHttpServletRequest request = new MockHttpServletRequest("GET", "/myapp/welcome");
HandlerExecutionChain chain = this.hm3.getHandler(request);
assertEquals(this.wac.getBean("welcome"), chain.getHandler());
}
/* (non-Javadoc)
* @see org.springframework.web.servlet.DispatcherServlet#doDispatch(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
@Override
protected void doDispatch(final HttpServletRequest request, HttpServletResponse response)
throws Exception {
request.setAttribute(LOCALE_RESOLVER_ATTRIBUTE, localeResolver);
HttpServletRequest processedRequest = request;
HandlerExecutionChain mappedHandler = null;
int interceptorIndex = -1;
// Expose current LocaleResolver and request as LocaleContext.
LocaleContext previousLocaleContext = LocaleContextHolder.getLocaleContext();
LocaleContextHolder.setLocaleContext(
new LocaleContext() {
public Locale getLocale() {
return localeResolver.resolveLocale(request);
}
});
// If the request is an include we need to try to use the original wrapped sitemesh
// response, otherwise layouts won't work properly
if (WebUtils.isIncludeRequest(request)) {
response = useWrappedOrOriginalResponse(response);
}
GrailsWebRequest requestAttributes = null;
RequestAttributes previousRequestAttributes = null;
Exception handlerException = null;
boolean isAsyncRequest =
processedRequest.getAttribute("javax.servlet.async.request_uri") != null;
try {
ModelAndView mv;
boolean errorView = false;
try {
Object exceptionAttribute = request.getAttribute(EXCEPTION_ATTRIBUTE);
// only process multipart requests if an exception hasn't occured
if (exceptionAttribute == null) {
processedRequest = checkMultipart(request);
}
// Expose current RequestAttributes to current thread.
previousRequestAttributes = RequestContextHolder.currentRequestAttributes();
requestAttributes = new GrailsWebRequest(processedRequest, response, getServletContext());
copyParamsFromPreviousRequest(previousRequestAttributes, requestAttributes);
// Update the current web request.
WebUtils.storeGrailsWebRequest(requestAttributes);
if (logger.isDebugEnabled()) {
logger.debug("Bound request context to thread: " + request);
logger.debug("Using response object: " + response.getClass());
}
// Determine handler for the current request.
mappedHandler = getHandler(processedRequest);
if (mappedHandler == null || mappedHandler.getHandler() == null) {
noHandlerFound(processedRequest, response);
return;
}
// Apply preHandle methods of registered interceptors.
if (mappedHandler.getInterceptors() != null) {
for (int i = 0; i < mappedHandler.getInterceptors().length; i++) {
HandlerInterceptor interceptor = mappedHandler.getInterceptors()[i];
if (!interceptor.preHandle(processedRequest, response, mappedHandler.getHandler())) {
triggerAfterCompletion(
mappedHandler, interceptorIndex, processedRequest, response, null);
return;
}
interceptorIndex = i;
}
}
// if this is an async request that has been resumed, then don't execute the action again
// instead try get the model and view and continue
if (isAsyncRequest) {
Object modelAndViewO =
processedRequest.getAttribute(GrailsApplicationAttributes.MODEL_AND_VIEW);
if (modelAndViewO != null) {
mv = (ModelAndView) modelAndViewO;
} else {
mv = null;
}
} else {
// Actually invoke the handler.
HandlerAdapter ha = getHandlerAdapter(mappedHandler.getHandler());
mv = ha.handle(processedRequest, response, mappedHandler.getHandler());
// if an async request was started simply return
if (processedRequest.getAttribute(GrailsApplicationAttributes.ASYNC_STARTED) != null) {
processedRequest.setAttribute(GrailsApplicationAttributes.MODEL_AND_VIEW, mv);
return;
}
// Do we need view name translation?
if ((ha instanceof AnnotationMethodHandlerAdapter
|| ha instanceof RequestMappingHandlerAdapter)
&& mv != null
&& !mv.hasView()) {
mv.setViewName(getDefaultViewName(request));
}
}
// Apply postHandle methods of registered interceptors.
if (mappedHandler.getInterceptors() != null) {
for (int i = mappedHandler.getInterceptors().length - 1; i >= 0; i--) {
HandlerInterceptor interceptor = mappedHandler.getInterceptors()[i];
interceptor.postHandle(processedRequest, response, mappedHandler.getHandler(), mv);
}
}
} catch (ModelAndViewDefiningException ex) {
handlerException = ex;
if (logger.isDebugEnabled()) {
logger.debug("ModelAndViewDefiningException encountered", ex);
}
mv = ex.getModelAndView();
} catch (Exception ex) {
handlerException = ex;
Object handler = (mappedHandler != null ? mappedHandler.getHandler() : null);
mv = processHandlerException(request, response, handler, ex);
errorView = (mv != null);
}
// Did the handler return a view to render?
if (mv != null && !mv.wasCleared()) {
// If an exception occurs in here, like a bad closing tag,
// we have nothing to render.
try {
render(mv, processedRequest, response);
if (isAsyncRequest && (response instanceof GrailsContentBufferingResponse)) {
GroovyPageLayoutFinder groovyPageLayoutFinder =
getWebApplicationContext()
.getBean("groovyPageLayoutFinder", GroovyPageLayoutFinder.class);
GrailsContentBufferingResponse bufferingResponse =
(GrailsContentBufferingResponse) response;
HttpServletResponse targetResponse = bufferingResponse.getTargetResponse();
Content content = bufferingResponse.getContent();
if (content != null) {
Decorator decorator = groovyPageLayoutFinder.findLayout(request, content);
SiteMeshWebAppContext webAppContext =
new SiteMeshWebAppContext(request, targetResponse, getServletContext());
if (decorator != null) {
if (decorator instanceof com.opensymphony.sitemesh.Decorator) {
((com.opensymphony.sitemesh.Decorator) decorator).render(content, webAppContext);
} else {
new OldDecorator2NewDecorator(decorator).render(content, webAppContext);
}
} else {
content.writeOriginal(targetResponse.getWriter());
}
}
}
if (errorView) {
WebUtils.clearErrorRequestAttributes(request);
}
} catch (Exception e) {
// Only render the error view if we're not already trying to render it.
// This prevents a recursion if the error page itself has errors.
if (request.getAttribute(GrailsApplicationAttributes.RENDERING_ERROR_ATTRIBUTE) == null) {
request.setAttribute(
GrailsApplicationAttributes.RENDERING_ERROR_ATTRIBUTE, Boolean.TRUE);
mv = super.processHandlerException(processedRequest, response, mappedHandler, e);
handlerException = e;
if (mv != null) render(mv, processedRequest, response);
} else {
request.removeAttribute(GrailsApplicationAttributes.RENDERING_ERROR_ATTRIBUTE);
logger.warn("Recursive rendering of error view detected.", e);
try {
response.setContentType("text/plain");
response.getWriter().write("Internal server error");
response.flushBuffer();
} catch (Exception e2) {
logger.error("Internal server error - problem rendering error view", e2);
}
requestAttributes.setRenderView(false);
return;
}
}
} else {
if (logger.isDebugEnabled()) {
logger.debug(
"Null ModelAndView returned to DispatcherServlet with name '"
+ getServletName()
+ "': assuming HandlerAdapter completed request handling");
}
}
// Trigger after-completion for successful outcome.
triggerAfterCompletion(
mappedHandler, interceptorIndex, processedRequest, response, handlerException);
} catch (Exception ex) {
// Trigger after-completion for thrown exception.
triggerAfterCompletion(mappedHandler, interceptorIndex, processedRequest, response, ex);
throw ex;
} catch (Error err) {
ServletException ex = new NestedServletException("Handler processing failed", err);
// Trigger after-completion for thrown exception.
triggerAfterCompletion(mappedHandler, interceptorIndex, processedRequest, response, ex);
throw ex;
} finally {
// Clean up any resources used by a multipart request.
if (processedRequest instanceof MultipartHttpServletRequest) {
if (multipartResolver != null) {
multipartResolver.cleanupMultipart((MultipartHttpServletRequest) processedRequest);
}
}
request.removeAttribute(MultipartHttpServletRequest.class.getName());
// Reset thread-bound holders
if (requestAttributes != null) {
requestAttributes.requestCompleted();
if (previousRequestAttributes instanceof GrailsWebRequest) {
WebUtils.storeGrailsWebRequest((GrailsWebRequest) previousRequestAttributes);
} else {
RequestContextHolder.setRequestAttributes(previousRequestAttributes);
}
}
LocaleContextHolder.setLocaleContext(previousLocaleContext);
if (logger.isDebugEnabled()) {
logger.debug("Cleared thread-bound request context: " + request);
}
}
}
/* (non-Javadoc)
* @see org.springframework.web.servlet.DispatcherServlet#doDispatch(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
protected void doDispatch(final HttpServletRequest request, HttpServletResponse response)
throws Exception {
HttpServletRequest processedRequest = request;
HandlerExecutionChain mappedHandler = null;
int interceptorIndex = -1;
final LocaleResolver localeResolver =
(LocaleResolver) request.getAttribute(LOCALE_RESOLVER_ATTRIBUTE);
// Expose current LocaleResolver and request as LocaleContext.
LocaleContext previousLocaleContext = LocaleContextHolder.getLocaleContext();
LocaleContextHolder.setLocaleContext(
new LocaleContext() {
public Locale getLocale() {
return localeResolver.resolveLocale(request);
}
});
// If the request is an include we need to try to use the original wrapped sitemesh
// response, otherwise layouts won't work properly
if (WebUtils.isIncludeRequest(request)) {
response = useWrappedOrOriginalResponse(response);
}
GrailsWebRequest requestAttributes = null;
GrailsWebRequest previousRequestAttributes = null;
Exception handlerException = null;
try {
ModelAndView mv = null;
try {
Object exceptionAttribute = request.getAttribute(EXCEPTION_ATTRIBUTE);
// only process multipart requests if an exception hasn't occured
if (exceptionAttribute == null) processedRequest = checkMultipart(request);
// Expose current RequestAttributes to current thread.
previousRequestAttributes =
(GrailsWebRequest) RequestContextHolder.currentRequestAttributes();
requestAttributes = new GrailsWebRequest(processedRequest, response, getServletContext());
copyParamsFromPreviousRequest(previousRequestAttributes, requestAttributes);
// Update the current web request.
WebUtils.storeGrailsWebRequest(requestAttributes);
if (logger.isDebugEnabled()) {
logger.debug("Bound request context to thread: " + request);
logger.debug("Using response object: " + response.getClass());
}
// Determine handler for the current request.
mappedHandler = getHandler(processedRequest, false);
if (mappedHandler == null || mappedHandler.getHandler() == null) {
noHandlerFound(processedRequest, response);
return;
}
// Apply preHandle methods of registered interceptors.
if (mappedHandler.getInterceptors() != null) {
for (int i = 0; i < mappedHandler.getInterceptors().length; i++) {
HandlerInterceptor interceptor = mappedHandler.getInterceptors()[i];
if (!interceptor.preHandle(processedRequest, response, mappedHandler.getHandler())) {
triggerAfterCompletion(
mappedHandler, interceptorIndex, processedRequest, response, null);
return;
}
interceptorIndex = i;
}
}
// Actually invoke the handler.
HandlerAdapter ha = getHandlerAdapter(mappedHandler.getHandler());
mv = ha.handle(processedRequest, response, mappedHandler.getHandler());
// Apply postHandle methods of registered interceptors.
if (mappedHandler.getInterceptors() != null) {
for (int i = mappedHandler.getInterceptors().length - 1; i >= 0; i--) {
HandlerInterceptor interceptor = mappedHandler.getInterceptors()[i];
interceptor.postHandle(processedRequest, response, mappedHandler.getHandler(), mv);
}
}
} catch (ModelAndViewDefiningException ex) {
GrailsUtil.deepSanitize(ex);
handlerException = ex;
if (logger.isDebugEnabled()) logger.debug("ModelAndViewDefiningException encountered", ex);
mv = ex.getModelAndView();
} catch (Exception ex) {
GrailsUtil.deepSanitize(ex);
handlerException = ex;
Object handler = (mappedHandler != null ? mappedHandler.getHandler() : null);
mv = processHandlerException(request, response, handler, ex);
}
// Did the handler return a view to render?
if (mv != null && !mv.wasCleared()) {
// If an exception occurs in here, like a bad closing tag,
// we have nothing to render.
try {
render(mv, processedRequest, response);
} catch (Exception e) {
mv = super.processHandlerException(processedRequest, response, mappedHandler, e);
handlerException = e;
render(mv, processedRequest, response);
}
} else {
if (logger.isDebugEnabled()) {
logger.debug(
"Null ModelAndView returned to DispatcherServlet with name '"
+ getServletName()
+ "': assuming HandlerAdapter completed request handling");
}
}
// Trigger after-completion for successful outcome.
triggerAfterCompletion(
mappedHandler, interceptorIndex, processedRequest, response, handlerException);
} catch (Exception ex) {
// Trigger after-completion for thrown exception.
triggerAfterCompletion(mappedHandler, interceptorIndex, processedRequest, response, ex);
throw ex;
} catch (Error err) {
ServletException ex = new NestedServletException("Handler processing failed", err);
// Trigger after-completion for thrown exception.
triggerAfterCompletion(mappedHandler, interceptorIndex, processedRequest, response, ex);
throw ex;
} finally {
// Clean up any resources used by a multipart request.
if (processedRequest instanceof MultipartHttpServletRequest && processedRequest != request) {
if (multipartResolver != null)
this.multipartResolver.cleanupMultipart((MultipartHttpServletRequest) processedRequest);
}
request.removeAttribute(MultipartHttpServletRequest.class.getName());
// Reset thread-bound holders
if (requestAttributes != null) {
requestAttributes.requestCompleted();
WebUtils.storeGrailsWebRequest(previousRequestAttributes);
}
LocaleContextHolder.setLocaleContext(previousLocaleContext);
if (logger.isDebugEnabled()) {
logger.debug("Cleared thread-bound request context: " + request);
}
}
}