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This commit is contained in:
Juergen Hoeller
2014-02-12 00:12:52 +01:00
parent 4a45af0038
commit cead06a3d9
6 changed files with 88 additions and 80 deletions
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65
spring-web/src/main/java/org/springframework/web/method/HandlerMethod.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.
@@ -30,15 +30,13 @@ import org.springframework.util.Assert;
import org.springframework.util.ClassUtils;
/**
* Encapsulates information about a bean method consisting of a
* {@linkplain #getMethod() method} and a {@linkplain #getBean() bean}. Provides
* convenient access to method parameters, the method return value, method
* annotations.
* Encapsulates information about a bean method consisting of a {@link #getMethod() method}
* and a {@link #getBean() bean}. Provides convenient access to method parameters,
* method return value, method annotations.
*
* <p>The class may be created with a bean instance or with a bean name (e.g. lazy
* bean, prototype bean). Use {@link #createWithResolvedBean()} to obtain an
* {@link HandlerMethod} instance with a bean instance initialized through the
* bean factory.
* <p>The class may be created with a bean instance or with a bean name (e.g. lazy bean,
* prototype bean). Use {@link #createWithResolvedBean()} to obtain an {@link HandlerMethod}
* instance with a bean instance initialized through the bean factory.
*
* @author Arjen Poutsma
* @author Rossen Stoyanchev
@@ -51,21 +49,21 @@ public class HandlerMethod {
private final Object bean;
private final Method method;
private final BeanFactory beanFactory;
private final MethodParameter[] parameters;
private final Method method;
private final Method bridgedMethod;
private final MethodParameter[] parameters;
/**
* Create an instance from a bean instance and a method.
*/
public HandlerMethod(Object bean, Method method) {
Assert.notNull(bean, "bean is required");
Assert.notNull(method, "method is required");
Assert.notNull(bean, "Bean is required");
Assert.notNull(method, "Method is required");
this.bean = bean;
this.beanFactory = null;
this.method = method;
@@ -73,26 +71,17 @@ public class HandlerMethod {
this.parameters = initMethodParameters();
}
private MethodParameter[] initMethodParameters() {
int count = this.bridgedMethod.getParameterTypes().length;
MethodParameter[] result = new MethodParameter[count];
for (int i = 0; i < count; i++) {
result[i] = new HandlerMethodParameter(i);
}
return result;
}
/**
* Create an instance from a bean instance, method name, and parameter types.
* @throws NoSuchMethodException when the method cannot be found
*/
public HandlerMethod(Object bean, String methodName, Class<?>... parameterTypes) throws NoSuchMethodException {
Assert.notNull(bean, "bean is required");
Assert.notNull(methodName, "method is required");
Assert.notNull(bean, "Bean is required");
Assert.notNull(methodName, "Method name is required");
this.bean = bean;
this.beanFactory = null;
this.method = bean.getClass().getMethod(methodName, parameterTypes);
this.bridgedMethod = BridgeMethodResolver.findBridgedMethod(method);
this.bridgedMethod = BridgeMethodResolver.findBridgedMethod(this.method);
this.parameters = initMethodParameters();
}
@@ -102,11 +91,11 @@ public class HandlerMethod {
* re-create the {@code HandlerMethod} with an initialized the bean.
*/
public HandlerMethod(String beanName, BeanFactory beanFactory, Method method) {
Assert.hasText(beanName, "beanName is required");
Assert.notNull(beanFactory, "beanFactory is required");
Assert.notNull(method, "method is required");
Assert.hasText(beanName, "Bean name is required");
Assert.notNull(beanFactory, "BeanFactory is required");
Assert.notNull(method, "Method is required");
Assert.isTrue(beanFactory.containsBean(beanName),
"Bean factory [" + beanFactory + "] does not contain bean [" + beanName + "]");
"BeanFactory [" + beanFactory + "] does not contain bean [" + beanName + "]");
this.bean = beanName;
this.beanFactory = beanFactory;
this.method = method;
@@ -130,8 +119,8 @@ public class HandlerMethod {
* Re-create HandlerMethod with the resolved handler.
*/
private HandlerMethod(HandlerMethod handlerMethod, Object handler) {
Assert.notNull(handlerMethod, "handlerMethod is required");
Assert.notNull(handler, "handler is required");
Assert.notNull(handlerMethod, "HandlerMethod is required");
Assert.notNull(handler, "Handler object is required");
this.bean = handler;
this.beanFactory = handlerMethod.beanFactory;
this.method = handlerMethod.method;
@@ -139,6 +128,16 @@ public class HandlerMethod {
this.parameters = handlerMethod.parameters;
}
private MethodParameter[] initMethodParameters() {
int count = this.bridgedMethod.getParameterTypes().length;
MethodParameter[] result = new MethodParameter[count];
for (int i = 0; i < count; i++) {
result[i] = new HandlerMethodParameter(i);
}
return result;
}
/**
* Returns the bean for this handler method.
*/
@@ -280,7 +279,7 @@ public class HandlerMethod {
@Override
public Class<?> getParameterType() {
return (this.returnValue != null) ? this.returnValue.getClass() : super.getParameterType();
return (this.returnValue != null ? this.returnValue.getClass() : super.getParameterType());
}
}

23
spring-web/src/test/java/org/springframework/web/method/support/InvocableHandlerMethodTests.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.
@@ -94,7 +94,8 @@ public class InvocableHandlerMethodTests {
try {
handlerMethod.invokeForRequest(webRequest, null);
fail("Expected exception");
} catch (IllegalStateException ex) {
}
catch (IllegalStateException ex) {
assertTrue(ex.getMessage().contains("No suitable resolver for argument [0] [type=java.lang.Integer]"));
}
}
@@ -131,7 +132,8 @@ public class InvocableHandlerMethodTests {
try {
handlerMethod.invokeForRequest(webRequest, null);
fail("Expected exception");
} catch (HttpMessageNotReadableException ex) {
}
catch (HttpMessageNotReadableException ex) {
// Expected..
// Allow HandlerMethodArgumentResolver exceptions to propagate..
}
@@ -150,7 +152,8 @@ public class InvocableHandlerMethodTests {
try {
handlerMethod.invokeForRequest(webRequest, null);
fail("Expected exception");
} catch (IllegalArgumentException ex) {
}
catch (IllegalStateException ex) {
assertNotNull("Exception not wrapped", ex.getCause());
assertTrue(ex.getCause() instanceof IllegalArgumentException);
assertTrue(ex.getMessage().contains("Controller ["));
@@ -166,28 +169,32 @@ public class InvocableHandlerMethodTests {
Throwable expected = new RuntimeException("error");
try {
invokeExceptionRaisingHandler(expected);
} catch (RuntimeException actual) {
}
catch (RuntimeException actual) {
assertSame(expected, actual);
}
expected = new Error("error");
try {
invokeExceptionRaisingHandler(expected);
} catch (Error actual) {
}
catch (Error actual) {
assertSame(expected, actual);
}
expected = new Exception("error");
try {
invokeExceptionRaisingHandler(expected);
} catch (Exception actual) {
}
catch (Exception actual) {
assertSame(expected, actual);
}
expected = new Throwable("error");
try {
invokeExceptionRaisingHandler(expected);
} catch (IllegalStateException actual) {
}
catch (IllegalStateException actual) {
assertNotNull(actual.getCause());
assertSame(expected, actual.getCause());
assertTrue(actual.getMessage().contains("Failed to invoke controller method"));