distributed OSGI demo_service.exported.configs-优快云博客

本文解决在使用OSGi注册HelloWorld-CXF服务时遇到的配置错误问题，通过修改服务暴露配置和注册服务的方式成功解决了访问路径无法访问的问题。

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今天继续《OSGi原理与最佳实践》，看到第四章，做 HelloWorld-cxf 的例子

照着例子敲来着，整个例子敲完了，运行，一直报错，

－－－－－－－－－－－－－－－－这里是解决方法－－－－－－－－－－－－－－－－－－

	Dictionary<String, String> props = new Hashtable<String, String>();

        props.put("osgi.remote.interfaces", "*");
        props.put("osgi.remote.configuration.type", "pojo");
        props.put("osgi.remote.configuration.pojo.address", "http://localhost:9000/hello_world");
        
        registration = bundleContext.registerService(HelloWorldServiceInterfaces.class.getName(), 
                                          new HelloWorldImple(), props);

把上面的内容改成下面

	Dictionary<String, String> props = new Hashtable<String, String>();

        <span style="color:#ff0000;">props.put("service.exported.interfaces", "*");
        props.put("service.exported.configs", "org.apache.cxf.ws");
        props.put("org.apache.cxf.ws.address", "http://localhost:9000/hello_world");</span>
        
        registration = bundleContext.registerService(HelloWorldServiceInterfaces.class.getName(), 
                                          new HelloWorldImple(), props);

bundle配置如下，我没有单独到处servlet和osgi，直接用的eclipse里面的

－－－－－－－－－－－－－－－下面是故事，可以不看－－－－－－－－－－－－－－－－－－－

不行，复制原来的代码直接贴过去（网上找的资源）还是一样。

各种缺包的提示，尝试着添加各种bundle，最后都要吐来了，还是提示缺，而且是越来越缺，完全一个无底洞。一定那里出问题了。

删除项目重新建，还好，这次不提示缺包了，这让我想起了，上一篇里面提到的，有可能是bundle以来问题，应该简单操作一下就行了，具体操作请查看

http://blog.youkuaiyun.com/q821424508/article/details/46604279

言归正传，说下今天的问题。

把项目弄好之后启动项目。没有错误提示，访问的时候抱404错误，控制台提示httpservice startup at 8080 ，这事什么意思，我代码里不是这么写的

	Dictionary<String, String> props = new Hashtable<String, String>();

        props.put("osgi.remote.interfaces", "*");
        props.put("osgi.remote.configuration.type", "pojo");
        props.put("osgi.remote.configuration.pojo.address", "http://localhost:9000/hello_world");
        
        registration = bundleContext.registerService(HelloWorldServiceInterfaces.class.getName(), 
                                          new HelloWorldImple(), props);

这问题就来了，启动不报错，但是访问不到路径，一定还是那里配置错误，

亲，没错的，代码都是复制过来的。那问题可有可能是版本的问题，我的环境，cxf插件下载的事最新的cxf-dosgi-ri-singlebundle-distribution-1.2.jar,

osgi也是比书里面的新，

别问我为什么不按照书里面的版本弄，我也想，只是有些资源时找不到的。所以就按照自己eclipse的默认版本来了。

说到版本不同，那就找下官网吧，

Service Provider properties For Configuring SOAP-based services and consumers

Note: for backwards compatibility old values marked below are still supported.

Property Name	Data Type	Example	Description
service.exported.interfaces (previously:osgi.remote.interfaces)	String	`org.example.BarService,org.example.FooService*`	Denotes the interfaces to be exposed remotely. This is a comma-separated list of fully qualified Java interfaces that should be made available remotely. A special value of `` can be provided meaning that all* of the interfaces passed to the `BundleContext.registerService()` call are suitable for remoting.
service.exported.configs (previously:osgi.remote.configuration.type)	String	`org.apache.cxf.ws`	Specifies the mechanism for configuring the service exposure. Possible values: `org.apache.cxf.ws` (previously: `pojo`) the OSGi Service is exposed as a Web Service. `wsdl` configuration driven from WSDL

Property Name

Data Type

Example

Description

service.exported.interfaces
(previously:osgi.remote.interfaces)

String

org.example.BarService,org.example.FooService*

Denotes the interfaces to be exposed remotely. This is a comma-separated list of fully qualified Java interfaces that should be made available remotely. A special value of * can be provided meaning that all of the interfaces passed to the BundleContext.registerService() call are suitable for remoting.

service.exported.configs (previously:osgi.remote.configuration.type)

String

org.apache.cxf.ws

Specifies the mechanism for configuring the service exposure. Possible values:

org.apache.cxf.ws (previously: pojo) the OSGi Service is exposed as a Web Service.
wsdl configuration driven from WSDL

这个事官网的，

Note: for backwards compatibility old values marked below are still supported.

这句翻译过来，应该是为了兼容老的功能，下面呗标记出来的依然支持吧，高中水平，不知道是不是这么翻译的。

但是按照翻译来说，我按照书上敲（别扣字眼，是复制来的我知道）的代码应该没问题

继续看

`org.apache.cxf.ws` configuration type

When the service.exported.configs=org.apache.cxf.ws (or osgi.remote.configuration.type=pojo) property is specified, the following properties may also be specified.

突然来了一句，这句的大概意思是如果service.exported.configs=org.apache.cxf.ws (or osgi.remote.configuration.type=pojo) 这个被指定了，

那么下面的也必须被设置，

我只能呵呵了。

Property Name	Data Type	Example	Description
org.apache.cxf.ws.address (previously:osgi.remote.configuration.pojo.address)	String	{{ http://localhost:9090/greeter }}	The address at which the service with be made available remotely. If this property is not specified, this defaults to {{ http://localhost:9000/fully/qualified/ClassName }}.
org.apache.cxf.ws.httpservice.context (previously:osgi.remote.configuration.pojo.httpservice.context)	String	`/auction`	When this property is specified, the OSGi HTTP Service is used to expose the service, rather than a dedicated Jetty HTTP Server. This property doesn't allow the specification of a port number, as this is provided by the HTTP Service. The Distributed OSGi distributions come with Pax-Web, for which configuration information can be found here: http://wiki.ops4j.org/display/paxweb/Configuration , however other OSGi HTTP Service implementations are potentially configured differently.
org.apache.cxf.ws.frontend	String	`jaxws`	The CXF frontend which will be used to create endpoints. Defaults to 'simple' which is an Aegis-based simple frontend. Note that for JAXWS to work a javax.jws.* has to be imported into the interface and/or implementation and client bundles for annotations like @WebService and @WebMethod be recognized
org.apache.cxf.ws.databinding	String	`jaxb`	Supported values are 'aegis and 'jaxb', defaults to 'aegis'. Note that for JAXB to work JAXB packages like javax.xml.bind.annotation.* have to be imported
org.apache.cxf.ws.wsdl.location	String	`/wsdl/service.wsdl`	WSDL location
org.apache.cxf.ws.wsdl.service.ns	String	{{ http://services.org }}	WSDL service namespace
org.apache.cxf.ws.wsdl.service.name	String	`SoapService`	WSDL service name
org.apache.cxf.ws.wsdl.port.name	String	`SoapServicePort`	WSDL port name
org.apache.cxf.ws.in.interceptors	String, String[], List		List of CXF in interceptors
org.apache.cxf.ws.out.interceptors	String, String[], List		List of CXF out interceptors
org.apache.cxf.ws.in.fault.interceptors	String, String[], List		List of CXF in fault interceptors
org.apache.cxf.ws.out.fault.interceptors	String, String[], List		List of CXF out fault interceptors
org.apache.cxf.ws.features	String, String[], List, Object		List of CXF out features

Service Provider properties For Configuring RESTful JAXRS-based endpoints and consumers

`org.apache.cxf.rs` configuration type

When the service.exported.configs=org.apache.cxf.rs property is specified, the following properties may also be specified.

Property Name	Data Type	Example	Description
org.apache.cxf.rs.address	String	{{ http://localhost:9090/greeter }}	The address at which the service with be made available remotely. If this property is not specified, this defaults to {{ http://localhost:9000/fully/qualified/ClassName }}.
org.apache.cxf.rs.httpservice.context	String	`/auction`	When this property is specified, the OSGi HTTP Service which is used to expose the service, rather than a dedicated Jetty HTTP Server. By default, absolute address may look like 'http://localhost:8080/auction'
org.apache.cxf.rs.provider	Boolean	`true/false`	Can be used to identify a global JAXRS provider as CXF-compatible
org.apache.cxf.rs.provider.expected	Boolean	`true/false`	Can be used to require global providers to set an 'org.apache.cxf.rs.provider' property with a value 'true'.
org.apache.cxf.rs.provider.globalquery	Boolean	`true/false`	Can be used to disable queries for global providers, defaults to 'true'.
org.apache.cxf.rs.databinding	String	`aegis`	This property has a limited value for JAXRS services as JAXB is supported by default, the only supported value is 'aegis' and it is a shortcut for registering an Aegis provider, see below for more information on how to register custom providers for JAXRS services
org.apache.cxf.rs.wadl.location	String	`/wadl/service.wadl`	WADL location
org.apache.cxf.rs.provider	String, String[], List		List of JAX-RS providers
org.apache.cxf.rs.in.interceptors	String, String[], List		List of CXF in interceptors
org.apache.cxf.rs.out.interceptors	String, String[], List		List of CXF out interceptors
org.apache.cxf.rs.in.fault.interceptors	String, String[], List		List of CXF in fault interceptors
org.apache.cxf.rs.out.fault.interceptors	String, String[], List		List of CXF out fault interceptors
org.apache.cxf.rs.features	String, String[], List		List of CXF out features

这么多，怎么设，算了，用最新的吧

	Dictionary<String, String> props = new Hashtable<String, String>();

        props.put("service.exported.interfaces", "*");
        props.put("service.exported.configs", "org.apache.cxf.ws");
        props.put("org.apache.cxf.ws.address", "http://localhost:9000/hello_world");
        
        registration = bundleContext.registerService(HelloWorldServiceInterfaces.class.getName(), 
                                          new HelloWorldImple(), props);

最新版的java代码是这样的，

能运行，能访问了，

我还是想吐糟一下，明明说要向下兼容，为什么要设置那么多额外的属性。