{"id":18854831,"url":"https://github.com/noear/damibus","last_synced_at":"2025-08-31T23:37:13.983Z","repository":{"id":193411099,"uuid":"688741191","full_name":"noear/damibus","owner":"noear","description":"DamiBus，专为本地多模块之间通讯解耦而设计（尤其是未知模块、隔离模块）。也是 DDD 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align=\"center\" style=\"text-align:center;\"\u003e\n  DamiBus\n\u003c/h1\u003e\n\u003cp align=\"center\"\u003e\n\t\u003cstrong\u003e本地多模块过程调用框架（主打解耦）\u003c/strong\u003e\n\u003c/p\u003e\n\n\u003cp align=\"center\"\u003e\n    \u003ca target=\"_blank\" href=\"https://search.maven.org/artifact/org.noear/dami\"\u003e\n        \u003cimg src=\"https://img.shields.io/maven-central/v/org.noear/dami.svg?label=Maven%20Central\" alt=\"Maven\" /\u003e\n    \u003c/a\u003e\n    \u003ca target=\"_blank\" href=\"https://www.apache.org/licenses/LICENSE-2.0.txt\"\u003e\n\t\t\u003cimg src=\"https://img.shields.io/:license-Apache2-blue.svg\" alt=\"Apache 2\" /\u003e\n\t\u003c/a\u003e\n    \u003ca target=\"_blank\" href=\"https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html\"\u003e\n\t\t\u003cimg src=\"https://img.shields.io/badge/JDK-8-green.svg\" alt=\"jdk-8\" /\u003e\n\t\u003c/a\u003e\n    \u003ca target=\"_blank\" href=\"https://www.oracle.com/java/technologies/javase/jdk11-archive-downloads.html\"\u003e\n\t\t\u003cimg src=\"https://img.shields.io/badge/JDK-11-green.svg\" alt=\"jdk-11\" /\u003e\n\t\u003c/a\u003e\n    \u003ca target=\"_blank\" href=\"https://www.oracle.com/java/technologies/javase/jdk17-archive-downloads.html\"\u003e\n\t\t\u003cimg src=\"https://img.shields.io/badge/JDK-17-green.svg\" alt=\"jdk-17\" /\u003e\n\t\u003c/a\u003e\n    \u003ca target=\"_blank\" href=\"https://www.oracle.com/java/technologies/javase/jdk21-archive-downloads.html\"\u003e\n\t\t\u003cimg src=\"https://img.shields.io/badge/JDK-21-green.svg\" alt=\"jdk-21\" /\u003e\n\t\u003c/a\u003e\n    \u003cbr /\u003e\n    \u003ca target=\"_blank\" href='https://gitee.com/noear/dami/stargazers'\u003e\n        \u003cimg src='https://gitee.com/noear/dami/badge/star.svg' alt='gitee star'/\u003e\n    \u003c/a\u003e\n    \u003ca target=\"_blank\" href='https://github.com/noear/dami/stargazers'\u003e\n        \u003cimg src=\"https://img.shields.io/github/stars/noear/dami.svg?style=flat\u0026logo=github\" alt=\"github star\"/\u003e\n    \u003c/a\u003e\n\u003c/p\u003e\n\n\u003cbr/\u003e\n\u003cp align=\"center\"\u003e\n\t\u003ca href=\"https://jq.qq.com/?_wv=1027\u0026k=kjB5JNiC\"\u003e\n\t\u003cimg src=\"https://img.shields.io/badge/QQ交流群-22200020-orange\"/\u003e\u003c/a\u003e\n\u003c/p\u003e\n\n\n\u003chr /\u003e\n\n\n\n\nDamiBus，专为本地多模块之间通讯解耦而设计（尤其是未知模块、隔离模块、领域模块）。零依赖。\n\n###  特点\n\n结合总线与响应流的概念，可作事件分发，可作接口调用，可作异步响应。\n\n* 支持事务传导（同步分发、异常透传）\n* 支持事件标识、拦截器（方便跟踪）\n* 支持监听者排序、附件传递（多监听时，可相互合作）\n* 支持 Bus 和 Api 两种体验风格\n\n\n### 与常见的 EventBus、ApiBean 的区别\n\n|    | DamiBus | EventBus | Api | DamiBus 的情况说明                                                    |\n|----|------|----------|-----|----------------------------------------------------------------|\n| 广播 | 有    | 有        | 无   | 发送(send) + 监听(listen)\u003cbr/\u003e以及 Api 模式                            |\n| 应答 | 有    | 无        | 有   | 发送并请求(sendAndRequest) + 监听(listen) + 答复(reply)\u003cbr/\u003e以及 Api 模式 |\n| 回调 | 有+   | 无        | 有-  | 发送并订阅(sendAndSubscribe) + 监听(listen) + 答复(reply)               |\n| 耦合 | 弱-   | 弱+       | 强++ |                                                                |\n\n\n### 依赖配置\n\n```xml\n\u003cdependency\u003e\n    \u003cgroupId\u003eorg.noear\u003c/groupId\u003e\n    \u003cartifactId\u003edami\u003c/artifactId\u003e\n    \u003cversion\u003e1.0.7\u003c/version\u003e\n\u003c/dependency\u003e\n```\n\n如果涉及类加载器隔离：请在主程序标为编译，在其它模块标为可选。\n\n### 简单示例\n\n\n#### demo21_send\n\n```java\n//总线风格。bus()\npublic class Deom11 {\n    static String topic = \"demo.hello\";\n\n    public static void main(String[] args) {\n        //监听事件\n        Dami.bus().listen(topic, payload -\u003e {\n            System.err.println(payload); //可以有多个订阅\n        });\n        Dami.bus().listen(topic, payload -\u003e {\n            CompletableFuture.runAsync(()-\u003e { //也可以异步消费\n                System.err.println(payload);\n            });\n        });\n\n\n        //发送事件\n        Dami.bus().send(topic, \"{name:'noear',say:'hello'}\");\n    }\n}\n```\n\n#### demo12_request\n\n```java\n//泛型总线风格。\u003cC,R\u003ebus()\npublic class Demo12 {\n    static String topic = \"demo.hello\";\n\n    public static void main(String[] args) {\n        //监听事件\n        Dami.\u003cString,String\u003ebus().listen(topic, payload -\u003e {\n            System.err.println(payload);\n\n            if (payload.isRequest() || payload.isSubscribe()) {\n                payload.reply(\"hi!\"); // sendAndRequest 只接收第一个\n                payload.reply(\"* hi nihao!\");\n                payload.reply(\"** hi nihao!\");\n            }\n        });\n\n\n        //发送事件 //要求有答复（即，返回值）\n        String rst1 = Dami.\u003cString,String\u003ebus().sendAndRequest(topic, \"world\"); \n        //发送事件 //要求有答复（即，返回值） //支持默认值（没有订阅时触发）\n        //String rst1 = Dami.\u003cString,String\u003ebus().sendAndRequest(topic, \"world\",()-\u003e\"demo\"); \n        System.out.println(rst1);\n\n        //发送事件 //可接收多次答复\n        Dami.\u003cString,String\u003ebus().sendAndSubscribe(topic, \"world\", rst2 -\u003e {\n            System.out.println(rst2); //subscribe 不限回调次数\n        });\n    }\n}\n```\n\n#### demo31_api\n\n使用 ioc 适配版本更简便，详情：[dami-solon-plugin](dami-solon-plugin)、[dami-springboot-starter](dami-springboot-starter)\n\n```java\n//接口风格\npublic interface EventUser {\n    void onCreated(Long userId, String name);\n    Long getUserId(String name);\n}\n\n//通过约定保持与 Sender 相同的接口定义（或者实现 UserEventSender 接口，但会带来依赖关系）\npublic class EventUserListener1 { // implements EventUser\n    public void onCreated(Long userId, String name) {\n        System.err.println(\"onCreated: userId=\" + userId + \", name=\" + name);\n    }\n\n    public Long getUserId(String name) {\n        return Long.valueOf(name.hashCode());\n    }\n}\n\npublic class Demo31 {\n    public static void main(String[] args) {\n        //注册监听器\n        EventUserListener1 userEventListener = new EventUserListener1();\n        api.registerListener(topicMapping, userEventListener);\n\n        //生成发送器\n        EventUser eventUser = api.createSender(topicMapping, EventUser.class);\n\n        //发送测试\n        eventUser.onCreated(1L, \"noear\");\n        Long userId = eventUser.getUserId(\"dami\");\n        System.err.println(\"收到：响应：userId：\" + userId);\n\n        //注销监听器\n        api.unregisterListener(topicMapping, userEventListener);\n    }\n}\n```\n\n\n### 定制能力（详见主题路由器：[TopicRouter.md](TopicRouter.md)）\n\n```java\npublic class Demo15_path {\n    public void main(){\n        //切换为模式匹配路由器 + RoutingPath（支持 * 和 ** 占位符；支持 / 或 . 做为间隔）\n        DamiConfig.configure(new TopicRouterPatterned(RoutingPath::new));\n\n        //拦截\n        Dami.bus().listen(\"demo/a/*\", (payload) -\u003e {\n            System.err.println(payload);\n        });\n\n        //发送事件\n        Dami.bus().send(\"demo/a/1\", \"world1\");\n        Dami.bus().send(\"demo/a/2\", \"world2\");\n    }\n}\n```\n\n```java\npublic class Demo15_tag {\n    public void main(){\n        //切换为模式匹配路由器 + RoutingTag（\":\"前为主题，后按 \",\" 号分割作为tag）\n        DamiConfig.configure(new TopicRouterPatterned(RoutingTag::new));\n\n        //拦截\n        Dami.bus().listen(\"demo.a:id\", (payload) -\u003e {\n            System.err.println(payload);\n        });\n\n        //发送事件\n        Dami.bus().send(\"demo.a:id\", \"world1\");\n        Dami.bus().send(\"demo.a:id,name\", \"world2\");\n    }\n}\n```\n\n### 可无依赖接口实现\n\n详情：[dami-solon-plugin](dami-solon-plugin)、[dami-springboot-starter](dami-springboot-starter)\n\n```java\n@DamiTopic(\"event.user\")\npublic interface EventUserService {\n    User getUser(long userId); //方法的主题 = topicMapping + \".\" + method.getName() //方法不能重名\n}\n\n//通过约定保持与 EventUserService 相同的接口定义（或者实现 EventUserService 接口，这个会带来依赖关系）\n@DamiTopic(\"event.user\")\npublic class EventUserServiceListener { // implements EventUserService // 它相当于是个实现类\n    public User getUser(long userId) {\n        return new User(userId);\n    }\n}\n\n@SolonTest\npublic class Demo81 {\n    @Inject\n    EventUserService eventUserService;\n\n    @Test\n    public void main(){\n        User user = eventUserService.getUser(99);\n        assert user.getUserId() == 99;\n    }\n}\n```","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fnoear%2Fdamibus","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fnoear%2Fdamibus","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fnoear%2Fdamibus/lists"}