用cxf+spring开发web service

骑猪看日落 2022-08-07 00:24 280阅读 0赞

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：


@Component

写了一个类来证明这一点：


Xml代码 复制代码 收藏代码spinner.gif

1. <?xml version=”1.0” encoding=”UTF-8”?>
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<?xml version=”1.0” encoding=”UTF-8”?>











 
  1.     <jaxws:endpoint id="helloWorld" address="/HelloWorld"
  2.         implementor="#helloWorldImpl" />
  4.     <jaxws:client id="remedy"
  5.         serviceClass="com.huawei.remedy.webservice.RemedyWebServiceCM"
  6.         address="http://10.78.229.199:8080/remedy/webservice/RemedyWebService" />
  8. </beans>

Java代码 复制代码 收藏代码spinner.gif

  1. protected void doGet(HttpServletRequest request,
  2. HttpServletResponse response) throws ServletException, IOException {
  4. ServletContext context = request.getServletContext();
  6. WebApplicationContext wc = WebApplicationContextUtils
  7. .getWebApplicationContext(context);
  9. String[] beans = wc.getBeanDefinitionNames();
  11. for (String beanName : beans) {
  12. System.out.println(beanName);
  13. }
  15. RemedyWebServiceCM remedy = (RemedyWebServiceCM) wc.getBean(“remedy”);
  17. AcknowledgeRequest message = new AcknowledgeRequest();
  18. remedy.acknowledge(message);

  20. }

    protected void doGet(HttpServletRequest request,

    1.         HttpServletResponse response) throws ServletException, IOException {
    3.     ServletContext context = request.getServletContext();
    5.     WebApplicationContext wc = WebApplicationContextUtils
    6.             .getWebApplicationContext(context);
    8.     String[] beans = wc.getBeanDefinitionNames();
    10.     for (String beanName : beans) {
    11.         System.out.println(beanName);
    12.     }
    14.     RemedyWebServiceCM remedy = (RemedyWebServiceCM) wc.getBean("remedy");
    16.     AcknowledgeRequest message = new AcknowledgeRequest();
    17.     remedy.acknowledge(message);
    19. }

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、、生成的

2、如果要在的实现类中注入bean的话，要注意：

错误的写法：

Xml代码 复制代码 收藏代码spinner.gif

  1. <jaxws:endpoint id=”helloWorld” address=”/HelloWorld”

  2. 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：

Xml代码 复制代码 收藏代码spinner.gif

  1. <jaxws:endpoint id=”helloWorld” address=”/HelloWorld”

  2. 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。用或者@Component都是OK的，这里支持注解

3、上面说的是，比较简单。但是就比较麻烦

我目前感觉，声明的bean，没办法在别的bean里用@Autowired注入，只能用的方式来注入

Java代码 复制代码 收藏代码spinner.gif

  1. @WebService
  2. public interface RemedyWebServiceCM {
  4. RemedyResponse acknowledge(AcknowledgeRequest arg0);
  6. RemedyResponse close(CloseRequest arg0);
  8. RemedyResponse notify(NotifyRequest arg0);

  10. }

    @WebService
    public interface RemedyWebServiceCM {

    1. RemedyResponse acknowledge(AcknowledgeRequest arg0);
    3. RemedyResponse close(CloseRequest arg0);
    5. RemedyResponse notify(NotifyRequest arg0);

    }

Java代码 复制代码 收藏代码spinner.gif

  1. public class HelloWorldImpl implements HelloWorld {
  3. private RemedyWebServiceCM remedy;
  5. public String sayHi(User theUser) {
  7. AcknowledgeRequest message = new AcknowledgeRequest();
  8. remedy.acknowledge(message);
  10. return “Hello “ + theUser.getName() + “ ,your age is “
  11. + theUser.getAge();
  12. }
  14. public void setRemedy(RemedyWebServiceCM remedy) {
  15. this.remedy = remedy;
  16. }

  18. }

    public class HelloWorldImpl implements HelloWorld {

    1. private RemedyWebServiceCM remedy;
    3. public String sayHi(User theUser) {
    5.     AcknowledgeRequest message = new AcknowledgeRequest();
    6.     remedy.acknowledge(message);
    8.     return "Hello " + theUser.getName() + " ,your age is "
    9.             + theUser.getAge();
    10. }
    12. public void setRemedy(RemedyWebServiceCM remedy) {
    13.     this.remedy = remedy;
    14. }

    }

Xml代码 复制代码 收藏代码spinner.gif

  1. <?xml version=”1.0” encoding=”UTF-8”?>
  3. <beans xmlns=”http://www.springframework.org/schema/beans“
  4. xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance“ xmlns:jaxws=”http://cxf.apache.org/jaxws“
  5. xmlns:context=”http://www.springframework.org/schema/context“
  6. xsi:schemaLocation=”http://www.springframework.org/schema/beans
  7. http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
  8. http://www.springframework.org/schema/context
  9. http://www.springframework.org/schema/context/spring-context-3.0.xsd
  10. http://cxf.apache.org/jaxws
  11. http://cxf.apache.org/schemas/jaxws.xsd">
  23. <jaxws:endpoint id=”helloWorld” address=”/HelloWorld”
  24. implementor=”#helloWorldImpl” />
  26. <jaxws:client id=”remedy”
  27. serviceClass=”com.huawei.remedy.webservice.RemedyWebServiceCM”
  28. address=”http://10.78.229.199:8080/remedy/webservice/RemedyWebService“ />

  30. <?xml version=”1.0” encoding=”UTF-8”?>

用这种的方式就可以

Java代码 复制代码 收藏代码spinner.gif

  1. @Controller
  2. public class HelloWorldImpl implements HelloWorld {
  4. @Autowired
  5. private RemedyWebServiceCM remedy;
  7. public String sayHi(User theUser) {
  9. AcknowledgeRequest message = new AcknowledgeRequest();
  10. remedy.acknowledge(message);
  12. return “Hello “ + theUser.getName() + “ ,your age is “
  13. + theUser.getAge();
  14. }

  16. }

    @Controller
    public class HelloWorldImpl implements HelloWorld {

    1. @Autowired
    2. private RemedyWebServiceCM remedy;
    4. public String sayHi(User theUser) {
    6.     AcknowledgeRequest message = new AcknowledgeRequest();
    7.     remedy.acknowledge(message);
    9.     return "Hello " + theUser.getName() + " ,your age is "
    10.             + theUser.getAge();
    11. }

    }

Xml代码 复制代码 收藏代码spinner.gif

  1. <?xml version=”1.0” encoding=”UTF-8”?>
  3. <beans xmlns=”http://www.springframework.org/schema/beans“
  4. xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance“ xmlns:jaxws=”http://cxf.apache.org/jaxws“
  5. xmlns:context=”http://www.springframework.org/schema/context“
  6. xsi:schemaLocation=”http://www.springframework.org/schema/beans
  7. http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
  8. http://www.springframework.org/schema/context
  9. http://www.springframework.org/schema/context/spring-context-3.0.xsd
  10. http://cxf.apache.org/jaxws
  11. http://cxf.apache.org/schemas/jaxws.xsd">
  19. <jaxws:endpoint id=”helloWorld” address=”/HelloWorld”
  20. implementor=”#helloWorldImpl” />
  22. <jaxws:client id=”remedy”
  23. serviceClass=”com.huawei.remedy.webservice.RemedyWebServiceCM”
  24. address=”http://10.78.229.199:8080/remedy/webservice/RemedyWebService“ />

  26. <?xml version=”1.0” encoding=”UTF-8”?>

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，明明已经用声明了，而且用配置文件的方式也是能搞定的

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