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| 4.14 分组聚合 |
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| 4.15 参数验证 |
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| 4.16 结果缓存 |
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| 4.17 泛化引用 |
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| 4.18 泛化实现 |
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| 4.19 回声测试 |
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| 4.20 上下文信息 |
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| 4.22 异步调用 |
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| 4.23 本地调用 |
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| 4.24 参数回调 |
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| 4.25 事件通知 |
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| 4.26 本地存根 |
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| 4.27 本地伪装 |
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| 4.28 延迟暴露 |
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| <a href="并发控制.html"> |
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| 4.29 并发控制 |
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| </a> |
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| <a href="连接控制.html"> |
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| 4.30 连接控制 |
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| </a> |
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| <a href="延迟连接.html"> |
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| 4.31 延迟连接 |
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| </a> |
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| 4.32 粘滞连接 |
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| </a> |
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| 4.33 令牌验证 |
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| </a> |
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| <a href="路由规则.html"> |
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| 4.34 路由规则 |
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| </a> |
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| <a href="配置规则.html"> |
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| 4.35 配置规则 |
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| </a> |
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| <a href="服务降级.html"> |
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| 4.36 服务降级 |
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| </a> |
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| 4.37 优雅停机 |
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| </a> |
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| <a href="主机绑定.html"> |
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| 4.38 主机绑定 |
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| </a> |
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| 4.39 日志适配 |
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| </a> |
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| <a href="访问日志.html"> |
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| 4.40 访问日志 |
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| </a> |
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| <a href="服务容器.html"> |
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| 4.41 服务容器 |
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| </a> |
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| <a href="ReferenceConfig缓存.html"> |
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| 4.42 Reference Config缓存 |
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| </a> |
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| <a href="分布式事务.html"> |
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| 4.43 分布式事务 |
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| </a> |
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| </li> |
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| <a href="../reference-apiconf/api.html"> |
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| 5 API参考手册 |
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| </a> |
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| </li> |
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| </ul> |
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| </li> |
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| <li class="chapter " data-level="1.6" data-path="../reference-xmlconf/introduction.html"> |
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| <a href="../reference-xmlconf/introduction.html"> |
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| 5 schema配置参考手册 |
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| </a> |
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| <ul class="articles"> |
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| <li class="chapter " data-level="1.6.1" data-path="../reference-xmlconf/dubbo-service.html"> |
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| <a href="../reference-xmlconf/dubbo-service.html"> |
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| 5.1 dubbo:service |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.6.2" data-path="../reference-xmlconf/dubbo-reference.html"> |
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| <a href="../reference-xmlconf/dubbo-reference.html"> |
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| 5.2 dubbo:reference |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.6.3" data-path="../reference-xmlconf/dubbo-protocol.html"> |
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| <a href="../reference-xmlconf/dubbo-protocol.html"> |
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| 5.3 dubbo:protocol |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.6.4" data-path="../reference-xmlconf/dubbo-registry.html"> |
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| <a href="../reference-xmlconf/dubbo-registry.html"> |
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| 5.4 dubbo:registry |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.6.5" data-path="../reference-xmlconf/dubbo-monitor.html"> |
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| <a href="../reference-xmlconf/dubbo-monitor.html"> |
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| 5.5 dubbo:monitor |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.6.6" data-path="../reference-xmlconf/dubbo-application.html"> |
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| <a href="../reference-xmlconf/dubbo-application.html"> |
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| 5.6 dubbo:application |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.6.7" data-path="../reference-xmlconf/dubbo-module.html"> |
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| <a href="../reference-xmlconf/dubbo-module.html"> |
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| 5.7 dubbo:module |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.6.8" data-path="../reference-xmlconf/dubbo-provider.html"> |
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| <a href="../reference-xmlconf/dubbo-provider.html"> |
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| 5.8 dubbo:provider |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.6.9" data-path="../reference-xmlconf/dubbo-consumer.html"> |
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| <a href="../reference-xmlconf/dubbo-consumer.html"> |
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| 5.9 dubbo:consumer |
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| 6 协议参考手册 |
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| 6.1 dubbo:// |
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| <h1> |
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| <a href=".." >4.17 泛化引用</a> |
| </h1> |
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| <p><img src="../sources/images/check.gif" alt="warning">泛接口调用方式主要用于客户端没有API接口及模型类元的情况，参数及返回值中的所有POJO均用Map表示，通常用于框架集成，比如：实现一个通用的服务测试框架，可通过GenericService调用所有服务实现。</p> |
| </blockquote> |
| <pre><code class="lang-xml"><span class="hljs-tag"><<span class="hljs-name">dubbo:reference</span> <span class="hljs-attr">id</span>=<span class="hljs-string">"barService"</span> <span class="hljs-attr">interface</span>=<span class="hljs-string">"com.foo.BarService"</span> <span class="hljs-attr">generic</span>=<span class="hljs-string">"true"</span> /></span> |
| </code></pre> |
| <pre><code class="lang-java">GenericService barService = (GenericService) applicationContext.getBean(<span class="hljs-string">"barService"</span>); |
| Object result = barService.$invoke(<span class="hljs-string">"sayHello"</span>, <span class="hljs-keyword">new</span> String[] { <span class="hljs-string">"java.lang.String"</span> }, <span class="hljs-keyword">new</span> Object[] { <span class="hljs-string">"World"</span> }); |
| </code></pre> |
| <pre><code class="lang-java"><span class="hljs-keyword">import</span> com.alibaba.dubbo.rpc.service.GenericService; |
| ... |
| |
| <span class="hljs-comment">// 引用远程服务 </span> |
| ReferenceConfig<GenericService> reference = <span class="hljs-keyword">new</span> ReferenceConfig<GenericService>(); <span class="hljs-comment">// 该实例很重量，里面封装了所有与注册中心及服务提供方连接，请缓存</span> |
| reference.setInterface(<span class="hljs-string">"com.xxx.XxxService"</span>); <span class="hljs-comment">// 弱类型接口名 </span> |
| reference.setVersion(<span class="hljs-string">"1.0.0"</span>); |
| reference.setGeneric(<span class="hljs-keyword">true</span>); <span class="hljs-comment">// 声明为泛化接口 </span> |
| |
| GenericService genericService = reference.get(); <span class="hljs-comment">// 用com.alibaba.dubbo.rpc.service.GenericService可以替代所有接口引用 </span> |
| |
| <span class="hljs-comment">// 基本类型以及Date,List,Map等不需要转换，直接调用 </span> |
| Object result = genericService.$invoke(<span class="hljs-string">"sayHello"</span>, <span class="hljs-keyword">new</span> String[] {<span class="hljs-string">"java.lang.String"</span>}, <span class="hljs-keyword">new</span> Object[] {<span class="hljs-string">"world"</span>}); |
| |
| <span class="hljs-comment">// 用Map表示POJO参数，如果返回值为POJO也将自动转成Map </span> |
| Map<String, Object> person = <span class="hljs-keyword">new</span> HashMap<String, Object>(); |
| person.put(<span class="hljs-string">"name"</span>, <span class="hljs-string">"xxx"</span>); |
| person.put(<span class="hljs-string">"password"</span>, <span class="hljs-string">"yyy"</span>); |
| Object result = genericService.$invoke(<span class="hljs-string">"findPerson"</span>, <span class="hljs-keyword">new</span> String[]{<span class="hljs-string">"com.xxx.Person"</span>}, <span class="hljs-keyword">new</span> Object[]{person}); <span class="hljs-comment">// 如果返回POJO将自动转成Map </span> |
| |
| ... |
| </code></pre> |
| <p>假设存在POJO如：</p> |
| <pre><code class="lang-java"><span class="hljs-keyword">package</span> com.xxx; |
| |
| <span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">PersonImpl</span> <span class="hljs-keyword">implements</span> <span class="hljs-title">Person</span> </span>{ |
| <span class="hljs-keyword">private</span> String name; |
| <span class="hljs-keyword">private</span> String password; |
| |
| <span class="hljs-function"><span class="hljs-keyword">public</span> String <span class="hljs-title">getName</span><span class="hljs-params">()</span> </span>{ |
| <span class="hljs-keyword">return</span> name; |
| } |
| |
| <span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">setName</span><span class="hljs-params">(String name)</span> </span>{ |
| <span class="hljs-keyword">this</span>.name = name; |
| } |
| |
| <span class="hljs-function"><span class="hljs-keyword">public</span> String <span class="hljs-title">getPassword</span><span class="hljs-params">()</span> </span>{ |
| <span class="hljs-keyword">return</span> password; |
| } |
| |
| <span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">setPassword</span><span class="hljs-params">(String password)</span> </span>{ |
| <span class="hljs-keyword">this</span>.password = password; |
| } |
| } |
| </code></pre> |
| <p>则POJO数据：</p> |
| <pre><code class="lang-java">Person person = <span class="hljs-keyword">new</span> PersonImpl(); |
| person.setName(<span class="hljs-string">"xxx"</span>); |
| person.setPassword(<span class="hljs-string">"yyy"</span>); |
| </code></pre> |
| <p>可用下面Map表示：</p> |
| <pre><code class="lang-java">Map<String, Object> map = <span class="hljs-keyword">new</span> HashMap<String, Object>(); |
| map.put(<span class="hljs-string">"class"</span>, <span class="hljs-string">"com.xxx.PersonImpl"</span>); <span class="hljs-comment">// 注意：如果参数类型是接口，或者List等丢失泛型，可通过class属性指定类型。</span> |
| map.put(<span class="hljs-string">"name"</span>, <span class="hljs-string">"xxx"</span>); |
| map.put(<span class="hljs-string">"password"</span>, <span class="hljs-string">"yyy"</span>); |
| </code></pre> |
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