2

此基本代码成功地使命令 scopeA:test 在 shell 中可访问：

package com.A;

import org.apache.felix.ipojo.annotations.Component;
import org.apache.felix.ipojo.annotations.Instantiate;
import org.apache.felix.ipojo.annotations.Provides;
import org.apache.felix.ipojo.annotations.Requires;
import org.apache.felix.ipojo.annotations.ServiceProperty;
import org.apache.felix.service.command.Descriptor;

@Component(immediate = true)
@Instantiate
@Provides(specifications = Commands.class)
public final class Commands {

    @ServiceProperty(name = "osgi.command.scope", value = "scopeA")
    String scope;

    @ServiceProperty(name = "osgi.command.function", value = "{}")
    String[] function = new String[] {
            "test"
    };

    @Descriptor("Example")
    public void test() {
        System.out.println("hello");
    }
}

但是，如果我添加一个依赖于另一个 OSGI 组件的构造函数，则该命令将不再可访问，并且“帮助”不会列出它。然而，捆绑包仍然可以加载到活动状态。

package com.A;

import org.apache.felix.ipojo.annotations.Component;
import org.apache.felix.ipojo.annotations.Instantiate;
import org.apache.felix.ipojo.annotations.Provides;
import org.apache.felix.ipojo.annotations.Requires;
import org.apache.felix.ipojo.annotations.ServiceProperty;
import org.apache.felix.service.command.Descriptor;

import com.B;

@Component(immediate = true)
@Instantiate
@Provides(specifications = Commands.class)
public final class Commands {

    public Commands(@Requires B b) {
    }

    @ServiceProperty(name = "osgi.command.scope", value = "scopeA")
    String scope;

    @ServiceProperty(name = "osgi.command.function", value = "{}")
    String[] function = new String[] {
            "test"
    };

    @Descriptor("Example")
    public void test() {
        System.out.println("hello");
    }
}

B的内容很简单：

import org.apache.felix.ipojo.annotations.Component;
import org.apache.felix.ipojo.annotations.Instantiate;
import org.apache.felix.ipojo.annotations.Provides;

@Component(immediate = true)
@Instantiate
@Provides
final class B {
}

为什么不再列出该命令的任何想法？查找有关状态的更多信息以便我可以更好地调试的提示？

4

2 回答 2

1

问题是命令需要 @Requires 在字段上而不是在构造函数中。

@Requires
B b;

构造函数也必须被删除。

这是因为 gogo 有一种特殊的调用组件的方法。

于 2013-02-08T01:06:24.930 回答
0

对我来说，这也需要改变

@ServiceProperty(name = "osgi.command.function", value = "{}")
String[] function = new String[] {
    "test"
};

至

@ServiceProperty(name = "osgi.command.function", value = "{test}")
String[] function;
于 2020-02-03T13:43:06.017 回答