cxf和spring集成的一些事

环境：
cxf-2.1.3，jdk6，jboss7.0.2，spring3.0.6

用cxf+spring开发web service程序很简单，不过有一些集成问题要注意。在此把这几天发现的一些总结一下，最后有一个遗留的问题

1、关于bean的声明

要发布或者要调用的web service接口，需要用@WebService注解声明。不过要注意的是，@WebService注解不会把类声明为spring的bean

可以声明为bean的方式有以下4个：

<jaxws:endpoint>
<jaxws:client>
<bean id="" class="">
@Component

写了一个类来证明这一点：

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jaxws="http://cxf.apache.org/jaxws"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
       						http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
       						http://www.springframework.org/schema/context 
      			 			http://www.springframework.org/schema/context/spring-context-3.0.xsd
        					http://cxf.apache.org/jaxws 
        					http://cxf.apache.org/schemas/jaxws.xsd">

	<import resource="classpath:META-INF/cxf/cxf.xml" />
	<import resource="classpath:META-INF/cxf/cxf-extension-soap.xml" />
	<import resource="classpath:META-INF/cxf/cxf-servlet.xml" />
	
	<context:component-scan base-package="com.huawei.framework" />
	
	<bean id="helloWorldImpl" class="com.huawei.framework.webservice.HelloWorldImpl">
		<property name="remedy" ref="remedy" />
	</bean>

	<jaxws:endpoint id="helloWorld" address="/HelloWorld"
		implementor="#helloWorldImpl" />

	<jaxws:client id="remedy"
		serviceClass="com.huawei.remedy.webservice.RemedyWebServiceCM"
		address="http://10.78.229.199:8080/remedy/webservice/RemedyWebService" />

</beans>

protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {

		ServletContext context = request.getServletContext();

		WebApplicationContext wc = WebApplicationContextUtils
				.getWebApplicationContext(context);

		String[] beans = wc.getBeanDefinitionNames();

		for (String beanName : beans) {
			System.out.println(beanName);
		}
		
		RemedyWebServiceCM remedy = (RemedyWebServiceCM) wc.getBean("remedy");
		
		AcknowledgeRequest message = new AcknowledgeRequest();
		remedy.acknowledge(message);

	}

在控制台可以看到以下几个bean：
20:02:24,120 INFO  [stdout] (http--0.0.0.0-8888-2) helloWorldImpl
20:02:24,120 INFO  [stdout] (http--0.0.0.0-8888-2) helloWorld
20:02:24,120 INFO  [stdout] (http--0.0.0.0-8888-2) remedy

以上3个bean，就分别是由<bean>、<jaxws:endpoint>、<jaxws:client>生成的

2、如果要在<jaxws:endpoint>的实现类中注入bean的话，要注意：

错误的写法：

<jaxws:endpoint id="helloWorld" address="/HelloWorld"
		implementor="com.huawei.framework.webservice.HelloWorldImpl" />

用这种写法，虽然HelloWorldImpl类已经被声明成bean了，但是注入是失败的

准确来说，在spring容器中存在有HelloWorldImpl对应的bean，并且相关的依赖也已经注入了。但是cxf框架得到的HelloWorldImpl，与上述的bean不是同一个对象，这个HelloWorldImpl对象可能是用反射或者其他机制创建出来的，没有任何组件被注入

正确的写法：

<jaxws:endpoint id="helloWorld" address="/HelloWorld"
		implementor="#helloWorldImpl" />

在implementor属性中，用#beanName，这样的话，cxf框架得到的HelloWorldImpl，就是spring容器持有的那个bean。当然这有个前提，就是系统中已经存在这个bean。用<bean id="">或者@Component都是OK的，这里支持注解

3、上面说的是<jaxws:endpoint>，比较简单。但是<jaxws:client>就比较麻烦

我目前感觉，<jaxws:client>声明的bean，没办法在别的bean里用@Autowired注入，只能用<bean id="">的方式来注入

@WebService
public interface RemedyWebServiceCM {

	RemedyResponse acknowledge(AcknowledgeRequest arg0);

	RemedyResponse close(CloseRequest arg0);

	RemedyResponse notify(NotifyRequest arg0);

}

public class HelloWorldImpl implements HelloWorld {

	private RemedyWebServiceCM remedy;

	public String sayHi(User theUser) {
		
		AcknowledgeRequest message = new AcknowledgeRequest();
		remedy.acknowledge(message);
		
		return "Hello " + theUser.getName() + " ,your age is "
				+ theUser.getAge();
	}

	public void setRemedy(RemedyWebServiceCM remedy) {
		this.remedy = remedy;
	}
	
}

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jaxws="http://cxf.apache.org/jaxws"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
       						http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
       						http://www.springframework.org/schema/context 
      			 			http://www.springframework.org/schema/context/spring-context-3.0.xsd
        					http://cxf.apache.org/jaxws 
        					http://cxf.apache.org/schemas/jaxws.xsd">

	<import resource="classpath:META-INF/cxf/cxf.xml" />
	<import resource="classpath:META-INF/cxf/cxf-extension-soap.xml" />
	<import resource="classpath:META-INF/cxf/cxf-servlet.xml" />
	
	<context:component-scan base-package="com.huawei.framework" />
	
	<bean id="helloWorldImpl" class="com.huawei.framework.webservice.HelloWorldImpl">
		<property name="remedy" ref="remedy" />
	</bean>

	<jaxws:endpoint id="helloWorld" address="/HelloWorld"
		implementor="#helloWorldImpl" />

	<jaxws:client id="remedy"
		serviceClass="com.huawei.remedy.webservice.RemedyWebServiceCM"
		address="http://10.78.229.199:8080/remedy/webservice/RemedyWebService" />

</beans>

用这种<bean id="">的方式就可以

@Controller
public class HelloWorldImpl implements HelloWorld {

	@Autowired
	private RemedyWebServiceCM remedy;

	public String sayHi(User theUser) {
		
		AcknowledgeRequest message = new AcknowledgeRequest();
		remedy.acknowledge(message);
		
		return "Hello " + theUser.getName() + " ,your age is "
				+ theUser.getAge();
	}
	
}

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jaxws="http://cxf.apache.org/jaxws"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
       						http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
       						http://www.springframework.org/schema/context 
      			 			http://www.springframework.org/schema/context/spring-context-3.0.xsd
        					http://cxf.apache.org/jaxws 
        					http://cxf.apache.org/schemas/jaxws.xsd">

	<import resource="classpath:META-INF/cxf/cxf.xml" />
	<import resource="classpath:META-INF/cxf/cxf-extension-soap.xml" />
	<import resource="classpath:META-INF/cxf/cxf-servlet.xml" />
	
	<context:component-scan base-package="com.huawei.framework" />
	
	<jaxws:endpoint id="helloWorld" address="/HelloWorld"
		implementor="#helloWorldImpl" />

	<jaxws:client id="remedy"
		serviceClass="com.huawei.remedy.webservice.RemedyWebServiceCM"
		address="http://10.78.229.199:8080/remedy/webservice/RemedyWebService" />

</beans>

用@Autowired加@Component的方式来做，就不行，报以下异常：

Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.huawei.remedy.webservice.RemedyWebServiceCM com.huawei.framework.webservice.HelloWorldImpl.remedy; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.huawei.remedy.webservice.RemedyWebServiceCM] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:508) [org.springframework.beans-3.0.6.RELEASE.jar:]
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:84) [org.springframework.beans-3.0.6.RELEASE.jar:]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:285) [org.springframework.beans-3.0.6.RELEASE.jar:]
... 21 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.huawei.remedy.webservice.RemedyWebServiceCM] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:924) [org.springframework.beans-3.0.6.RELEASE.jar:]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:793) [org.springframework.beans-3.0.6.RELEASE.jar:]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:707) [org.springframework.beans-3.0.6.RELEASE.jar:]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:480) [org.springframework.beans-3.0.6.RELEASE.jar:]
... 23 more

说自动注入失败，因为找不到RemedyWebServiceCM类型的bean

试了很久，完全搞不定。也想不通是为啥，因为RemedyWebServiceCM这个类型的bean，明明已经用<jaxws:client>声明了，而且用配置文件的方式也是能搞定的

你可以从容器中GET出ID为“remedy”的BEAN，看它的类型是什么.

楼主，你的问题解决了吗？没有解决的话，主要是你不能用autowired，你必须用resource(name="beanname")这样的形式

1、如下代码是由org.apache.cxf.frontend.spring.ClientProxyFactoryBeanDefinitionParser进行解析。

 

 

 

2、它在解析时使用的是“实例工厂方式”完成创建：http://jinnianshilongnian.iteye.com/blog/1415277

  

3、而Bean类型默认指定为

 

 

4、

此处注意：

<context:component-scan base-package="com.huawei.framework" />  加载的Bean定义可能早于 <jaxws:client id="remedy"  ……>

 

5、问题所在：

当spring实例化HelloWorldImpl完毕时会使用AutowiredAnnotationBeanPostProcessor完成@Autowired的注入，详见http://jinnianshilongnian.iteye.com/blog/1492424

 

校验类型是否匹配的代码如下：

public boolean isTypeMatch(String name, Class targetType) throws NoSuchBeanDefinitionException {

String beanName = transformedBeanName(name);

Class typeToMatch = (targetType != null ? targetType : Object.class);

 

// Check manually registered singletons.

Object beanInstance = getSingleton(beanName, false);  //1、此处获取remeby的单例（但remeby此时还没有创建 所以为null）

if (beanInstance != null) {

if (beanInstance instanceof FactoryBean) {

if (!BeanFactoryUtils.isFactoryDereference(name)) {

Class type = getTypeForFactoryBean((FactoryBean) beanInstance);

return (type != null && typeToMatch.isAssignableFrom(type));

}

else {

return typeToMatch.isAssignableFrom(beanInstance.getClass()) ;

}

}

else {

return !BeanFactoryUtils.isFactoryDereference(name) &&

typeToMatch.isAssignableFrom(beanInstance.getClass());

}

}

 

else {//2、因此执行此段代码

// No singleton instance found -> check bean definition.

BeanFactory parentBeanFactory = getParentBeanFactory();

if (parentBeanFactory != null && !containsBeanDefinition(beanName)) {

// No bean definition found in this factory -> delegate to parent.

return parentBeanFactory.isTypeMatch(originalBeanName(name), targetType);

}

 

RootBeanDefinition mbd = getMergedLocalBeanDefinition(beanName); //2.1、获取Bean定义

Class beanClass = predictBeanType(beanName, mbd, new Class[] {FactoryBean.class, typeToMatch}); //2.2、获取bean类型

if (beanClass == null) {

return false;

}

 

// Check bean class whether we're dealing with a FactoryBean.

if (FactoryBean.class.isAssignableFrom(beanClass)) {

if (!BeanFactoryUtils.isFactoryDereference(name)) {

// If it's a FactoryBean, we want to look at what it creates, not the factory class.

Class type = getTypeForFactoryBean(beanName, mbd);

return (type != null && typeToMatch.isAssignableFrom(type));

}

else {

return typeToMatch.isAssignableFrom(beanClass);

}

}

else {

return !BeanFactoryUtils.isFactoryDereference(name) &&

typeToMatch.isAssignableFrom(beanClass);

}

}

}

 

 

 

 

protected Class predictBeanType(String beanName, RootBeanDefinition mbd, Class[] typesToMatch) {//2.2、获取bean类型

Class beanClass = null;

if (mbd.getFactoryMethodName() != null) {

beanClass = getTypeForFactoryMethod(beanName, mbd, typesToMatch); //2.2.1、因为我们的remeby是通过实例工厂创建，因此调用此段带啊

}

else {

beanClass = resolveBeanClass(mbd, beanName, typesToMatch);

}

// Apply SmartInstantiationAwareBeanPostProcessors to predict the

// eventual type after a before-instantiation shortcut.

if (beanClass != null && !mbd.isSynthetic() && hasInstantiationAwareBeanPostProcessors()) {

for (Iterator it = getBeanPostProcessors().iterator(); it.hasNext(); ) {

BeanPostProcessor bp = (BeanPostProcessor) it.next();

if (bp instanceof SmartInstantiationAwareBeanPostProcessor) {

SmartInstantiationAwareBeanPostProcessor ibp = (SmartInstantiationAwareBeanPostProcessor) bp;

Class processedType = ibp.predictBeanType(beanClass, beanName);

if (processedType != null) {

return processedType;

}

}

}

}

return beanClass;

}

 

 

//此方法会遍历所有的工厂方法 查找返回值类型，并且返回该类型  不细说了 （而且我们之前提到的工厂方法create返回值是Object  明显和我们需要的类型不兼容  因此会抛出找不到Bean异常）

protected Class getTypeForFactoryMethod(String beanName, RootBeanDefinition mbd, Class[] typesToMatch) {

Class factoryClass = null;

boolean isStatic = true;

 

String factoryBeanName = mbd.getFactoryBeanName();

if (factoryBeanName != null) {

if (factoryBeanName.equals(beanName)) {

throw new BeanDefinitionStoreException(mbd.getResourceDescription(), beanName,

"factory-bean reference points back to the same bean definition");

}

// Check declared factory method return type on factory class.

factoryClass = getType(factoryBeanName); 

isStatic = false;

}

else {

// Check declared factory method return type on bean class.

factoryClass = resolveBeanClass(mbd, beanName, typesToMatch);

}

 

if (factoryClass == null) {

return null;

}

 

// If all factory methods have the same return type, return that type.

// Can't clearly figure out exact method due to type converting / autowiring!

int minNrOfArgs = mbd.getConstructorArgumentValues().getArgumentCount();

Method[] candidates = ReflectionUtils.getAllDeclaredMethods(factoryClass);

Set returnTypes = new HashSet(1);

for (int i = 0; i < candidates.length; i++) {

Method factoryMethod = candidates[i];

if (Modifier.isStatic(factoryMethod.getModifiers()) == isStatic &&

factoryMethod.getName().equals(mbd.getFactoryMethodName()) &&

factoryMethod.getParameterTypes().length >= minNrOfArgs) {

returnTypes.add(factoryMethod.getReturnType());

}

}

 

if (returnTypes.size() == 1) {

// Clear return type found: all factory methods return same type.

return (Class) returnTypes.iterator().next();

}

else {

// Ambiguous return types found: return null to indicate "not determinable".

return null;

}

}

 

 

 

 

 

 

解决方法：

1、

@DependsOn("remedy") //保证remedy先被加载并初始化

@Component

 

 

 

龙年，非常感谢！

客气哈，确实很细节的问题。你跟踪一遍流程看看，我给的代码也不是很全 只是个大概。