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HandlerExecutionChain prevents re-adding the interceptors array to the list (and declares varargs now) 

Issue: SPR-12566
This commit is contained in:
Juergen Hoeller 2014-12-23 18:27:49 +01:00
parent d55af2b445
commit 6b3023c2aa
3 changed files with 69 additions and 59 deletions
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29
spring-webmvc-portlet/src/main/java/org/springframework/web/portlet/HandlerExecutionChain.java
View File

@ -1,5 +1,5 @@
/*
* Copyright 2002-2012 the original author or authors.
* Copyright 2002-2014 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -21,6 +21,7 @@ import java.util.Arrays;
import java.util.List;
import org.springframework.util.CollectionUtils;
import org.springframework.util.ObjectUtils;
/**
* Handler execution chain, consisting of handler object and any handler interceptors.
@ -45,7 +46,7 @@ public class HandlerExecutionChain {
* @param handler the handler object to execute
*/
public HandlerExecutionChain(Object handler) {
this(handler, null);
this(handler, (HandlerInterceptor[]) null);
}
/**
@ -54,7 +55,7 @@ public class HandlerExecutionChain {
* @param interceptors the array of interceptors to apply
* (in the given order) before the handler itself executes
*/
public HandlerExecutionChain(Object handler, HandlerInterceptor[] interceptors) {
public HandlerExecutionChain(Object handler, HandlerInterceptor... interceptors) {
if (handler instanceof HandlerExecutionChain) {
HandlerExecutionChain originalChain = (HandlerExecutionChain) handler;
this.handler = originalChain.getHandler();
@ -78,25 +79,25 @@ public class HandlerExecutionChain {
}
public void addInterceptor(HandlerInterceptor interceptor) {
initInterceptorList();
this.interceptorList.add(interceptor);
initInterceptorList().add(interceptor);
}
public void addInterceptors(HandlerInterceptor[] interceptors) {
if (interceptors != null) {
initInterceptorList();
this.interceptorList.addAll(Arrays.asList(interceptors));
public void addInterceptors(HandlerInterceptor... interceptors) {
if (!ObjectUtils.isEmpty(interceptors)) {
initInterceptorList().addAll(Arrays.asList(interceptors));
}
}
private void initInterceptorList() {
private List<HandlerInterceptor> initInterceptorList() {
if (this.interceptorList == null) {
this.interceptorList = new ArrayList<HandlerInterceptor>();
if (this.interceptors != null) {
// An interceptor array specified through the constructor
this.interceptorList.addAll(Arrays.asList(this.interceptors));
}
}
if (this.interceptors != null) {
this.interceptorList.addAll(Arrays.asList(this.interceptors));
this.interceptors = null;
}
this.interceptors = null;
return this.interceptorList;
}
/**

93
spring-webmvc/src/main/java/org/springframework/web/servlet/HandlerExecutionChain.java
View File

@ -1,5 +1,5 @@
/*
* Copyright 2002-2012 the original author or authors.
* Copyright 2002-2014 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -26,6 +26,7 @@ import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.util.CollectionUtils;
import org.springframework.util.ObjectUtils;
/**
* Handler execution chain, consisting of handler object and any handler interceptors.
@ -53,7 +54,7 @@ public class HandlerExecutionChain {
* @param handler the handler object to execute
*/
public HandlerExecutionChain(Object handler) {
this(handler, null);
this(handler, (HandlerInterceptor[]) null);
}
/**
@ -62,7 +63,7 @@ public class HandlerExecutionChain {
* @param interceptors the array of interceptors to apply
* (in the given order) before the handler itself executes
*/
public HandlerExecutionChain(Object handler, HandlerInterceptor[] interceptors) {
public HandlerExecutionChain(Object handler, HandlerInterceptor... interceptors) {
if (handler instanceof HandlerExecutionChain) {
HandlerExecutionChain originalChain = (HandlerExecutionChain) handler;
this.handler = originalChain.getHandler();
@ -76,6 +77,7 @@ public class HandlerExecutionChain {
}
}
/**
* Return the handler object to execute.
* @return the handler object
@ -85,25 +87,25 @@ public class HandlerExecutionChain {
}
public void addInterceptor(HandlerInterceptor interceptor) {
initInterceptorList();
this.interceptorList.add(interceptor);
initInterceptorList().add(interceptor);
}
public void addInterceptors(HandlerInterceptor[] interceptors) {
if (interceptors != null) {
initInterceptorList();
this.interceptorList.addAll(Arrays.asList(interceptors));
public void addInterceptors(HandlerInterceptor... interceptors) {
if (!ObjectUtils.isEmpty(interceptors)) {
initInterceptorList().addAll(Arrays.asList(interceptors));
}
}
private void initInterceptorList() {
private List<HandlerInterceptor> initInterceptorList() {
if (this.interceptorList == null) {
this.interceptorList = new ArrayList<HandlerInterceptor>();
if (this.interceptors != null) {
// An interceptor array specified through the constructor
this.interceptorList.addAll(Arrays.asList(this.interceptors));
}
}
if (this.interceptors != null) {
this.interceptorList.addAll(Arrays.asList(this.interceptors));
this.interceptors = null;
}
this.interceptors = null;
return this.interceptorList;
}
/**
@ -117,6 +119,7 @@ public class HandlerExecutionChain {
return this.interceptors;
}
/**
* Apply preHandle methods of registered interceptors.
* @return {@code true} if the execution chain should proceed with the
@ -124,9 +127,10 @@ public class HandlerExecutionChain {
* that this interceptor has already dealt with the response itself.
*/
boolean applyPreHandle(HttpServletRequest request, HttpServletResponse response) throws Exception {
if (getInterceptors() != null) {
for (int i = 0; i < getInterceptors().length; i++) {
HandlerInterceptor interceptor = getInterceptors()[i];
HandlerInterceptor[] interceptors = getInterceptors();
if (!ObjectUtils.isEmpty(interceptors)) {
for (int i = 0; i < interceptors.length; i++) {
HandlerInterceptor interceptor = interceptors[i];
if (!interceptor.preHandle(request, response, this.handler)) {
triggerAfterCompletion(request, response, null);
return false;
@ -141,12 +145,12 @@ public class HandlerExecutionChain {
* Apply postHandle methods of registered interceptors.
*/
void applyPostHandle(HttpServletRequest request, HttpServletResponse response, ModelAndView mv) throws Exception {
if (getInterceptors() == null) {
return;
}
for (int i = getInterceptors().length - 1; i >= 0; i--) {
HandlerInterceptor interceptor = getInterceptors()[i];
interceptor.postHandle(request, response, this.handler, mv);
HandlerInterceptor[] interceptors = getInterceptors();
if (!ObjectUtils.isEmpty(interceptors)) {
for (int i = interceptors.length - 1; i >= 0; i--) {
HandlerInterceptor interceptor = interceptors[i];
interceptor.postHandle(request, response, this.handler, mv);
}
}
}
@ -158,16 +162,16 @@ public class HandlerExecutionChain {
void triggerAfterCompletion(HttpServletRequest request, HttpServletResponse response, Exception ex)
throws Exception {
if (getInterceptors() == null) {
return;
}
for (int i = this.interceptorIndex; i >= 0; i--) {
HandlerInterceptor interceptor = getInterceptors()[i];
try {
interceptor.afterCompletion(request, response, this.handler, ex);
}
catch (Throwable ex2) {
logger.error("HandlerInterceptor.afterCompletion threw exception", ex2);
HandlerInterceptor[] interceptors = getInterceptors();
if (!ObjectUtils.isEmpty(interceptors)) {
for (int i = this.interceptorIndex; i >= 0; i--) {
HandlerInterceptor interceptor = interceptors[i];
try {
interceptor.afterCompletion(request, response, this.handler, ex);
}
catch (Throwable ex2) {
logger.error("HandlerInterceptor.afterCompletion threw exception", ex2);
}
}
}
}
@ -176,22 +180,23 @@ public class HandlerExecutionChain {
* Apply afterConcurrentHandlerStarted callback on mapped AsyncHandlerInterceptors.
*/
void applyAfterConcurrentHandlingStarted(HttpServletRequest request, HttpServletResponse response) {
if (getInterceptors() == null) {
return;
}
for (int i = getInterceptors().length - 1; i >= 0; i--) {
if (interceptors[i] instanceof AsyncHandlerInterceptor) {
try {
AsyncHandlerInterceptor asyncInterceptor = (AsyncHandlerInterceptor) this.interceptors[i];
asyncInterceptor.afterConcurrentHandlingStarted(request, response, this.handler);
}
catch (Throwable ex) {
logger.error("Interceptor [" + interceptors[i] + "] failed in afterConcurrentHandlingStarted", ex);
HandlerInterceptor[] interceptors = getInterceptors();
if (!ObjectUtils.isEmpty(interceptors)) {
for (int i = interceptors.length - 1; i >= 0; i--) {
if (interceptors[i] instanceof AsyncHandlerInterceptor) {
try {
AsyncHandlerInterceptor asyncInterceptor = (AsyncHandlerInterceptor) interceptors[i];
asyncInterceptor.afterConcurrentHandlingStarted(request, response, this.handler);
}
catch (Throwable ex) {
logger.error("Interceptor [" + interceptors[i] + "] failed in afterConcurrentHandlingStarted", ex);
}
}
}
}
}
/**
* Delegates to the handler's {@code toString()}.
*/

6
spring-webmvc/src/test/java/org/springframework/web/servlet/HandlerExecutionChainTests.java
View File

@ -1,5 +1,5 @@
/*
* Copyright 2002-2013 the original author or authors.
* Copyright 2002-2014 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -46,6 +46,7 @@ public class HandlerExecutionChainTests {
private AsyncHandlerInterceptor interceptor3;
@Before
public void setup() {
this.request = new MockHttpServletRequest();
@ -60,9 +61,12 @@ public class HandlerExecutionChainTests {
this.chain.addInterceptor(this.interceptor1);
this.chain.addInterceptor(this.interceptor2);
assertEquals(2, this.chain.getInterceptors().length);
this.chain.addInterceptor(this.interceptor3);
assertEquals(3, this.chain.getInterceptors().length);
}
@Test
public void successScenario() throws Exception {
ModelAndView mav = new ModelAndView();