我試圖發展到卡拉夫OSGi WAB包含一個REST API和來自定製服務的電話。然而,出於某種奇怪的原因,OSGi框架抱怨未滿足的能力,osgi.component
。未解決的要求:osgi.component
我想知道:
- 我怎樣才能解決這個問題呢?
- 什麼是
osgi.component
捆綁?爲什麼需要? - 爲什麼maven-bundle-plugin(從而也是bnd),在條目「Require-Capability」中聲明它?
- 如果我需要將它安裝在OSGi框架上,我可以在哪裏找到它?
一些額外的信息:
- karaf版本:4.0.7;
- maven bundle插件:3.2.0;
- 操作系統:Windows 10 64bit;
- IDE:Eclipse Neon;
一些代碼來提供額外的信息:
整個錯誤:
Error executing command: Error executing command on bundles: Error starting bundle 96: Unable to resolve com.massimobono.karaf.examples.user-fully-rest [96](R 96.0): missing requirement [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))) Unresolved requirements: [[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)))]
清單文件:
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
休息基類:
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());
}
}
}
感謝您的任何回覆
查看答案:http://stackoverflow.com/a/40611246/448551 –
我一直在尋找類似的答案像30分鐘...抱歉,重複的問題。 – Koldar