distributed OSGI demo

小程序：扫一扫查出行
【扫一扫了解最新限行尾号】
复制小程序

今天继续《OSGi原理与最佳实践》。看到第四章。做 HelloWorld-cxf 的样例

照着样例敲来着，整个样例敲完了，执行。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);

把上面的内容改成以下

	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配置例如以下，我没有单独到处servlet和osgi，直接用的eclipse里面的

－－－－－－－－－－－－－－－以下是故事。能够不看－－－－－－－－－－－－－－－－－－－

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。尝试着加入各种bundle。最后都要吐来了。还是提示缺。并且是越来越缺，全然一个无底洞。一定那里出问题了。

删除项目又一次建，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，应该简单操作一下即可了，详细操作请查看

http://blog.csdn.net/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，訪问的时候抱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。可是訪问不到路径。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号的问题，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，

别问我为什么不依照书里面的版本号弄。我也想。仅仅是有些资源时找不到的。所以就依照自己eclipse的默认版本号来了。

说到版本号不同，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，以下呗标记出来的依旧支持吧，高中水平。不知道是不是这么翻译的。

可是依照翻译来说，我依照书上敲（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，这句的大概意思是假设 service.exported.configs=org.apache.cxf.ws (or osgi.remote.configuration.type=pojo )
这个被指定了，

那么以下的也必须被设置，

我仅仅能呵呵了。

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代码是这种，

能执行，能訪问了。

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。