我正在尝试在 Karaf 上开发一个包含 REST API 和来自定制服务的调用的 OSGi WAB。但是，出于某种奇怪的原因，OSGi 框架抱怨功能不满意，osgi.component.
我想知道：
- 我该如何解决这个问题？
- 什么是
osgi.component捆绑？为什么需要？ - 为什么 maven-bundle-plugin（因此也是 bnd）在条目“Require-Capability”中声明它？
- 如果我需要在 OSGi 框架上安装它，我在哪里可以找到它？
一些附加信息：
- 卡拉夫版本：4.0.7；
- Maven 捆绑插件：3.2.0；
- 操作系统：Windows 10 64 位；
- IDE：日食霓虹灯；
一些提供附加信息的代码：
整个错误：
执行命令时出错：在捆绑包上执行命令时出错：启动捆绑包 96 时出错：无法解析 com.massimobono.karaf.examples.user-fully-rest [96](R 96.0)：缺少要求 [com.massimobono.karaf.examples.用户完全休息 [96](R 96.0)] osgi.extender；(&(osgi.extender=osgi.component)(version>=1.3.0)(!(version>=2.0.0))) 未解决的要求：[[com.massimobono.karaf.examples.user-fully-rest [ 96](R 96.0)] osgi.extender；(&(osgi.extender=osgi.component)(version>=1.3.0)(!(version>=2.0.0)))]
清单文件：
Manifest-Version: 1.0
Bundle-SymbolicName: com.massimobono.karaf.examples.user-fully-rest
Archiver-Version: Plexus Archiver
Built-By: massi
Bnd-LastModified: 1479908575162
Bundle-ActivationPolicy: lazy
Bundle-ManifestVersion: 2
Import-Package: com.massimobono.karaf.examples.user;version="[0.0,1)",
com.massimobono.karaf.examples.user.service;version="[0.0,1)",javax.w
s.rs;version="[2.0,3)",javax.ws.rs.core;version="[2.0,3)"
Require-Capability: osgi.extender;filter:="(&(osgi.extender=osgi.compo
nent)(version>=1.3.0)(!(version>=2.0.0)))",osgi.service;filter:="(obj
ectClass=com.massimobono.karaf.examples.user.service.UserService)";ef
fective:=active,osgi.ee;filter:="(&(osgi.ee=JavaSE)(version=1.8))"
Service-Component: OSGI-INF/com.massimobono.karaf.examples.user.ui.ful
lyrest.UserRest.xml
Tool: Bnd-3.2.0.201605172007
Originally-Created-By: Maven Integration for Eclipse
Export-Package: com.massimobono.karaf.examples.user.ui.fullyrest;uses:
="javax.ws.rs,javax.ws.rs.core";version="0.0.1"
Bundle-Name: user-fully-rest Maven Webapp
Bundle-Version: 0.0.1.SNAPSHOT
Created-By: Apache Maven Bundle Plugin
Build-Jdk: 1.8.0_91
休息基类：
package com.massimobono.karaf.examples.user.ui.fullyrest;
import java.time.LocalDateTime;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;
import com.massimobono.karaf.examples.user.User;
import com.massimobono.karaf.examples.user.service.UserService;
import com.massimobono.karaf.examples.user.service.UserServiceException;
@Path("user")
@Component(immediate=true)
public class UserRest {
@Reference
private volatile UserService userService;
@GET
@Produces(MediaType.TEXT_HTML)
public String getUserNumber() {
try {
return String.format("<h1>Total users: %d</h1>", this.userService.size());
} catch (UserServiceException e) {
return String.format("Couldn't fetch total users because %s", e.getMessage());
}
}
@PUT
@Path("add/{name}/{surname}")
@Produces(MediaType.TEXT_HTML)
public String add(@PathParam("name") String name, @PathParam("surname") String surname) {
try {
User u = new User(name, surname, LocalDateTime.now());
this.userService.addUser(u);
return String.format("<h1>New user with id %d</h1>", u.getId());
} catch (UserServiceException e) {
return String.format("<h1>Couldn't fethc total users because %s</h1>", e.getMessage());
}
}
@DELETE
@Path("remove/{id}")
@Produces(MediaType.TEXT_HTML)
public String remove(@PathParam("id") int id) {
User u;
try {
u = this.userService.getUser(id);
this.userService.removeUser(u);
return String.format("<h1>User name=%s surname=%s removed correctly</h1>", u.getName(), u.getSurname());
} catch (UserServiceException e) {
return String.format("<h1>Couldn't remove user because %s</h1>", e.getMessage());
}
}
}
感谢您的回复