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motan解读：添加spring 支持

代码位置：

motan-core的目录下

motan中使用spring管理配置对象。motan利用Spring的spi机制创建了自定义标签和相应的标签处理代码。具体使用方法见这篇。本文以motan为例，探讨如何扩展spring的schema.

1.首先，如果要自定义标签，不得不加上响应的xsd文件，这个文件可以对xml的格式进行约束。可以看到以下的自定义标签应该遵循的格式。对于新增的xsd文件，还要建立一个spring.schemas文件，加上这个xsd文件。

  1 <?xml version="1.0" encoding="UTF-8"?>
  2 <!--
  3   ~  Copyright 2009-2016 Weibo, Inc.
  4   ~
  5   ~    Licensed under the Apache License, Version 2.0 (the "License");
  6   ~    you may not use this file except in compliance with the License.
  7   ~    You may obtain a copy of the License at
  8   ~
  9   ~        http://www.apache.org/licenses/LICENSE-2.0
 10   ~
 11   ~    Unless required by applicable law or agreed to in writing, software
 12   ~    distributed under the License is distributed on an "AS IS" BASIS,
 13   ~    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 14   ~    See the License for the specific language governing permissions and
 15   ~    limitations under the License.
 16   -->
 17 
 18 <xsd:schema xmlns="http://api.weibo.com/schema/motan"
 19     xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
 20     xmlns:tool="http://www.springframework.org/schema/tool"
 21     xmlns:beans="http://www.springframework.org/schema/beans"
 22     targetNamespace="http://api.weibo.com/schema/motan">
 23 
 24      <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
 25     <xsd:import namespace="http://www.springframework.org/schema/tool"/>
 26     <xsd:import namespace="http://www.springframework.org/schema/beans"/>
 27     
 28     <xsd:complexType name="abstractConfig">
 29         <xsd:choice minOccurs="0" maxOccurs="unbounded">
 30             <xsd:element ref="beans:property" minOccurs="0" maxOccurs="unbounded" />
 31         </xsd:choice>
 32         <xsd:anyAttribute namespace="##other" processContents="lax" />
 33     </xsd:complexType>
 34     <xsd:complexType name="abstractRegistryConfig" >
 35         <xsd:complexContent>
 36             <xsd:extension base="abstractConfig">
 37             <xsd:attribute name="id" type="xsd:ID" />
 38             <xsd:attribute name="name" type="xsd:string" use="optional">
 39                 <xsd:annotation>
 40                     <xsd:documentation><![CDATA[ 注册名称. ]]></xsd:documentation>
 41                 </xsd:annotation>
 42             </xsd:attribute>
 43             <xsd:attribute name="regProtocol" type="xsd:string" use="optional">
 44                 <xsd:annotation>
 45                     <xsd:documentation><![CDATA[ 注册协议. ]]></xsd:documentation>
 46                 </xsd:annotation>
 47             </xsd:attribute>
 48             <xsd:attribute name="address" type="xsd:string" use="optional">
 49                 <xsd:annotation>
 50                     <xsd:documentation><![CDATA[ 注册中心地址. ]]></xsd:documentation>
 51                 </xsd:annotation>
 52             </xsd:attribute>
 53             <xsd:attribute name="username" type="xsd:string" use="optional">
 54                 <xsd:annotation>
 55                     <xsd:documentation><![CDATA[ 注册中心登录用户名. ]]></xsd:documentation>
 56                 </xsd:annotation>
 57             </xsd:attribute>
 58             <xsd:attribute name="password" type="xsd:string" use="optional">
 59                 <xsd:annotation>
 60                     <xsd:documentation><![CDATA[ 注册中心登录密码. ]]></xsd:documentation>
 61                 </xsd:annotation>
 62             </xsd:attribute>
 63             <xsd:attribute name="port" type="xsd:string" use="optional">
 64                 <xsd:annotation>
 65                     <xsd:documentation><![CDATA[ 注册中心缺省端口. ]]></xsd:documentation>
 66                 </xsd:annotation>
 67             </xsd:attribute>
 68             <xsd:attribute name="connectTimeout" type="xsd:integer" use="optional">
 69                 <xsd:annotation>
 70                     <xsd:documentation><![CDATA[ 注册中心连接超时时间(毫秒). ]]></xsd:documentation>
 71                 </xsd:annotation>
 72             </xsd:attribute>
 73             <xsd:attribute name="requestTimeout" type="xsd:string" use="optional">
 74                 <xsd:annotation>
 75                     <xsd:documentation><![CDATA[ 注册中心请求超时时间(毫秒). ]]></xsd:documentation>
 76                 </xsd:annotation>
 77             </xsd:attribute>
 78             <xsd:attribute name="registrySessionTimeout" type="xsd:integer" use="optional">
 79                 <xsd:annotation>
 80                     <xsd:documentation><![CDATA[ 注册中心会话超时时间(毫秒). ]]></xsd:documentation>
 81                 </xsd:annotation>
 82             </xsd:attribute>
 83             <xsd:attribute name="registryRetryPeriod" type="xsd:integer" use="optional">
 84                 <xsd:annotation>
 85                     <xsd:documentation><![CDATA[ registryRetryPeriod. ]]></xsd:documentation>
 86                 </xsd:annotation>
 87             </xsd:attribute>
 88             <xsd:attribute name="check" type="xsd:string" use="optional">
 89                 <xsd:annotation>
 90                     <xsd:documentation><![CDATA[ 启动时检查注册中心是否存在. ]]></xsd:documentation>
 91                 </xsd:annotation>
 92             </xsd:attribute>
 93             <xsd:attribute name="dynamic" type="xsd:boolean" use="optional">
 94                 <xsd:annotation>
 95                     <xsd:documentation><![CDATA[ 在该注册中心是否自动注册. ]]></xsd:documentation>
 96                 </xsd:annotation>
 97             </xsd:attribute>
 98             <xsd:attribute name="register" type="xsd:boolean" use="optional">
 99                 <xsd:annotation>
100                     <xsd:documentation><![CDATA[ 在该注册中心上服务是否暴露. ]]></xsd:documentation>
101                 </xsd:annotation>
102             </xsd:attribute>
103             <xsd:attribute name="subscribe" type="xsd:boolean" use="optional">
104                 <xsd:annotation>
105                     <xsd:documentation><![CDATA[ 在该注册中心上服务是否引用. ]]></xsd:documentation>
106                 </xsd:annotation>
107             </xsd:attribute>
108             <xsd:attribute name="excise" type="xsd:string" use="optional">
109                 <xsd:annotation>
110                     <xsd:documentation><![CDATA[ 注册中心移除策略，仅对vitage生效. ]]></xsd:documentation>
111                 </xsd:annotation>
112             </xsd:attribute>
113             <xsd:attribute name="default" type="xsd:boolean" use="optional">
114                 <xsd:annotation>
115                     <xsd:documentation><![CDATA[ is default protocol ]]></xsd:documentation>
116                 </xsd:annotation>    
117            </xsd:attribute>
118             
119             </xsd:extension>
120         </xsd:complexContent>
121     </xsd:complexType>    
122     <xsd:complexType name="abstractInterfaceConfig" >
123         <xsd:complexContent>
124             <xsd:extension base="abstractConfig">
125             <xsd:attribute name="proxy" type="xsd:string" use="optional">
126                 <xsd:annotation>
127                     <xsd:documentation><![CDATA[ 代理类型. ]]></xsd:documentation>
128                 </xsd:annotation>
129             </xsd:attribute>
130             
131             <xsd:attribute name="group" type="xsd:string" use="optional">
132                 <xsd:annotation>
133                     <xsd:documentation><![CDATA[ 服务分组. ]]></xsd:documentation>
134                 </xsd:annotation>
135             </xsd:attribute>
136              
137             <xsd:attribute name="version" type="xsd:string" use="optional">
138                 <xsd:annotation>
139                     <xsd:documentation><![CDATA[ version. ]]></xsd:documentation>
140                 </xsd:annotation>
141             </xsd:attribute>
142             <xsd:attribute name="throwException" type="xsd:string" use="optional">
143                 <xsd:annotation>
144                     <xsd:documentation><![CDATA[ throwException. ]]></xsd:documentation>
145                 </xsd:annotation>
146             </xsd:attribute>
147             <xsd:attribute name="requestTimeout" type="xsd:string" use="optional">
148                 <xsd:annotation>
149                     <xsd:documentation><![CDATA[ requestTimeout. ]]></xsd:documentation>
150                 </xsd:annotation>
151             </xsd:attribute>
152             <xsd:attribute name="connectTimeout" type="xsd:string" use="optional">
153                 <xsd:annotation>
154                     <xsd:documentation><![CDATA[ 连接请求超时时间(毫秒). ]]></xsd:documentation>
155                 </xsd:annotation>
156             </xsd:attribute>
157             <xsd:attribute name="retries" type="xsd:integer" use="optional">
158                 <xsd:annotation>
159                     <xsd:documentation><![CDATA[ retries  ]]></xsd:documentation>
160                 </xsd:annotation>
161             </xsd:attribute>    
162             <xsd:attribute name="filter" type="xsd:string" use="optional">
163                 <xsd:annotation>
164                     <xsd:documentation><![CDATA[ 过滤器配置. ]]></xsd:documentation>
165                 </xsd:annotation>
166             </xsd:attribute>
167             <xsd:attribute name="listener" type="xsd:string" use="optional">
168                 <xsd:annotation>
169                     <xsd:documentation><![CDATA[ 监听器配置. ]]></xsd:documentation>
170                 </xsd:annotation>
171             </xsd:attribute>
172             <xsd:attribute name="connections" type="xsd:integer" use="optional">
173                 <xsd:annotation>
174                     <xsd:documentation><![CDATA[ 连接数限制,0表示共享连接，否则为该服务独享连接数;默认共享. ]]></xsd:documentation>
175                 </xsd:annotation>
176             </xsd:attribute>
177             <xsd:attribute name="application" type="xsd:string" use="optional">
178                 <xsd:annotation>
179                     <xsd:documentation><![CDATA[ 应用信息. ]]></xsd:documentation>
180                 </xsd:annotation>
181             </xsd:attribute>
182             <xsd:attribute name="module" type="xsd:string" use="optional">
183                 <xsd:annotation>
184                     <xsd:documentation><![CDATA[ 模块信息. ]]></xsd:documentation>
185                 </xsd:annotation>
186             </xsd:attribute>
187             <xsd:attribute name="shareChannel" type="xsd:boolean" use="optional">
188                 <xsd:annotation>
189                     <xsd:documentation><![CDATA[ 是否共享channel. ]]></xsd:documentation>
190                 </xsd:annotation>
191             </xsd:attribute>
192             <xsd:attribute name="timeout" type="xsd:integer" use="optional">
193                 <xsd:annotation>
194                     <xsd:documentation><![CDATA[ The method invoke timeout. ]]></xsd:documentation>
195                 </xsd:annotation>
196             </xsd:attribute>
197             <xsd:attribute name="actives" type="xsd:integer" use="optional">
198                 <xsd:annotation>
199                     <xsd:documentation><![CDATA[ The max active requests. ]]></xsd:documentation>
200                 </xsd:annotation>
201             </xsd:attribute>
202             <xsd:attribute name="async" type="xsd:boolean" use="optional">
203                 <xsd:annotation>
204                     <xsd:documentation><![CDATA[ The method does async. ]]></xsd:documentation>
205                 </xsd:annotation>
206             </xsd:attribute>
207             <xsd:attribute name="mock" type="xsd:string" use="optional">
208                 <xsd:annotation>
209                     <xsd:documentation><![CDATA[ Use service mock implemention. ]]></xsd:documentation>
210                 </xsd:annotation>
211             </xsd:attribute>
212             <xsd:attribute name="check" type="xsd:string" use="optional">
213                 <xsd:annotation>
214                     <xsd:documentation><![CDATA[ 检查服务提供者是否存在 ]]></xsd:documentation>
215                 </xsd:annotation>
216             </xsd:attribute>
217             <xsd:attribute name="registry" type="xsd:string" use="optional">
218                 <xsd:annotation>
219                     <xsd:documentation><![CDATA[ 注册中心的id列表，多个用“,”分隔，如果为空，则使用所有的配置中心. ]]></xsd:documentation>
220                 </xsd:annotation>
221             </xsd:attribute>
222             <xsd:attribute name="register" type="xsd:boolean" use="optional">
223                 <xsd:annotation>
224                     <xsd:documentation><![CDATA[ 在该注册中心上服务是否暴露. ]]></xsd:documentation>
225                 </xsd:annotation>
226             </xsd:attribute>
227             <xsd:attribute name="subscribe" type="xsd:boolean" use="optional">
228                 <xsd:annotation>
229                     <xsd:documentation><![CDATA[ 在该注册中心上服务是否引用. ]]></xsd:documentation>
230                 </xsd:annotation>
231             </xsd:attribute>
232             <xsd:attribute name="accessLog" type="xsd:string" use="optional">
233                 <xsd:annotation>
234                     <xsd:documentation><![CDATA[ accessLog ]]></xsd:documentation>
235                 </xsd:annotation>
236             </xsd:attribute>
237             <xsd:attribute name="localServiceAddress" type="xsd:string" use="optional">
238                 <xsd:annotation>
239                     <xsd:documentation><![CDATA[ 当使用VintageRetryLookupRegistry时，从config server同步三次失败并且feature.motanmcq.loadaddressfromfs开关打开时，把这个配置指定的地址作为服务地址，以逗号分割 ]]></xsd:documentation>
240                 </xsd:annotation>
241             </xsd:attribute>
242             <xsd:attribute name="usegz" type="xsd:boolean" use="optional">
243                 <xsd:annotation>
244                     <xsd:documentation><![CDATA[ 是否开启gzip压缩.只有compressMotan的codec才能支持 ]]></xsd:documentation>
245                 </xsd:annotation>
246             </xsd:attribute>
247             <xsd:attribute name="mingzSize" type="xsd:integer" use="optional">
248                 <xsd:annotation>
249                     <xsd:documentation><![CDATA[ 开启gzip压缩的阈值.usegz开关开启，且传输数据大于此阈值时，才会进行gzip压缩。只有compressMotan的codec才能支持 ]]></xsd:documentation>
250                 </xsd:annotation>
251             </xsd:attribute>
252             <xsd:attribute name="codec" type="xsd:string" use="optional">
253                     <xsd:annotation>
254                         <xsd:documentation><![CDATA[ 协议编码. ]]></xsd:documentation>
255                     </xsd:annotation>
256                 </xsd:attribute>
257             </xsd:extension>
258         </xsd:complexContent>
259     </xsd:complexType>
260     
261     <xsd:complexType name="abstractProtocolConfig">
262         <xsd:complexContent>
263             <xsd:extension base="abstractConfig">
264         <xsd:attribute name="id" type="xsd:ID" />
265             <xsd:attribute name="name" type="xsd:string" use="required">
266                 <xsd:annotation>
267                     <xsd:documentation><![CDATA[ 服务协议 ]]></xsd:documentation>
268                 </xsd:annotation>
269             </xsd:attribute>
270             <xsd:attribute name="serialization" type="xsd:string" use="optional">
271                 <xsd:annotation>
272                     <xsd:documentation><![CDATA[ 序列化方式 ]]></xsd:documentation>
273                 </xsd:annotation>
274             </xsd:attribute>
275             <xsd:attribute name="payload" type="xsd:integer" use="optional">
276                 <xsd:annotation>
277                     <xsd:documentation><![CDATA[ 最大请求数据长度 ]]></xsd:documentation>
278                 </xsd:annotation>
279             </xsd:attribute>
280             <xsd:attribute name="buffer" type="xsd:integer" use="optional">
281                 <xsd:annotation>
282                     <xsd:documentation><![CDATA[ 缓存区大小 ]]></xsd:documentation>
283                 </xsd:annotation>
284             </xsd:attribute>
285            <xsd:attribute name="heartbeat" type="xsd:integer" use="optional">
286                 <xsd:annotation>
287                     <xsd:documentation><![CDATA[ 心跳间隔 ]]></xsd:documentation>
288                 </xsd:annotation>    
289            </xsd:attribute>
290            <xsd:attribute name="transporter" type="xsd:string" use="optional">
291                 <xsd:annotation>
292                     <xsd:documentation><![CDATA[ 网络传输方式 ]]></xsd:documentation>
293                 </xsd:annotation>
294            </xsd:attribute>
295            <xsd:attribute name="threads" type="xsd:integer" use="optional">
296                 <xsd:annotation>
297                     <xsd:documentation><![CDATA[ 线程池大小  ]]></xsd:documentation>
298                 </xsd:annotation>
299             </xsd:attribute>
300             <xsd:attribute name="iothreads" type="xsd:integer" use="optional">
301                 <xsd:annotation>
302                     <xsd:documentation><![CDATA[ IO线程池大小 ]]></xsd:documentation>
303                 </xsd:annotation>
304             </xsd:attribute>
305             <xsd:attribute name="requestTimeout" type="xsd:string" use="optional">
306                 <xsd:annotation>
307                     <xsd:documentation><![CDATA[ 请求超时 ]]></xsd:documentation>
308                 </xsd:annotation>
309             </xsd:attribute>
310             <xsd:attribute name="minClientConnection" type="xsd:integer" use="optional">
311                 <xsd:annotation>
312                     <xsd:documentation><![CDATA[ minClientConnection ]]></xsd:documentation>
313                 </xsd:annotation>
314             </xsd:attribute>
315             <xsd:attribute name="maxClientConnection" type="xsd:integer" use="optional">
316                 <xsd:annotation>
317                     <xsd:documentation><![CDATA[ maxClientConnection ]]></xsd:documentation>
318                 </xsd:annotation>
319             </xsd:attribute>
320             
321             <xsd:attribute name="minWorkerThread" type="xsd:integer" use="optional">
322                 <xsd:annotation>
323                     <xsd:documentation><![CDATA[ minWorkerThread ]]></xsd:documentation>
324                 </xsd:annotation>
325             </xsd:attribute>
326             <xsd:attribute name="maxWorkerThread" type="xsd:integer" use="optional">
327                 <xsd:annotation>
328                     <xsd:documentation><![CDATA[ maxWorkerThread ]]></xsd:documentation>
329                 </xsd:annotation>
330             </xsd:attribute>
331             <xsd:attribute name="maxContentLength" type="xsd:integer" use="optional">
332                 <xsd:annotation>
333                     <xsd:documentation><![CDATA[ maxContentLength ]]></xsd:documentation>
334                 </xsd:annotation>
335             </xsd:attribute>
336             <xsd:attribute name="maxServerConnection" type="xsd:integer" use="optional">
337                 <xsd:annotation>
338                     <xsd:documentation><![CDATA[ maxContentLength ]]></xsd:documentation>
339                 </xsd:annotation>
340             </xsd:attribute>
341             <xsd:attribute name="poolLifo" type="xsd:boolean" use="optional">
342                 <xsd:annotation>
343                     <xsd:documentation><![CDATA[ is poolLifo ]]></xsd:documentation>
344                 </xsd:annotation>    
345            </xsd:attribute>
346            <xsd:attribute name="lazyInit" type="xsd:boolean" use="optional">
347                 <xsd:annotation>
348                     <xsd:documentation><![CDATA[ is lazyInit ]]></xsd:documentation>
349                 </xsd:annotation>    
350            </xsd:attribute>
351            <xsd:attribute name="endpointFactory" type="xsd:string" use="optional">
352                 <xsd:annotation>
353                     <xsd:documentation><![CDATA[ endpointFactory ]]></xsd:documentation>
354                 </xsd:annotation>
355             </xsd:attribute>
356             <xsd:attribute name="cluster" type="xsd:string" use="optional">
357                 <xsd:annotation>
358                     <xsd:documentation><![CDATA[ cluster ]]></xsd:documentation>
359                 </xsd:annotation>
360             </xsd:attribute>
361             <xsd:attribute name="loadbalance" type="xsd:string" use="optional">
362                 <xsd:annotation>
363                     <xsd:documentation><![CDATA[ loadbalance ]]></xsd:documentation>
364                 </xsd:annotation>
365             </xsd:attribute>
366             <xsd:attribute name="haStrategy" type="xsd:string" use="optional">
367                 <xsd:annotation>
368                     <xsd:documentation><![CDATA[ haStrategy ]]></xsd:documentation>
369                 </xsd:annotation>
370             </xsd:attribute>
371             <xsd:attribute name="workerQueueSize" type="xsd:integer" use="optional">
372                 <xsd:annotation>
373                     <xsd:documentation><![CDATA[ workerQueueSize  ]]></xsd:documentation>
374                 </xsd:annotation>
375             </xsd:attribute>
376             <xsd:attribute name="acceptConnections" type="xsd:integer" use="optional">
377                 <xsd:annotation>
378                     <xsd:documentation><![CDATA[ acceptConnections  ]]></xsd:documentation>
379                 </xsd:annotation>
380             </xsd:attribute>
381             
382             <xsd:attribute name="proxy" type="xsd:string" use="optional">
383                 <xsd:annotation>
384                     <xsd:documentation><![CDATA[ proxy ]]></xsd:documentation>
385                 </xsd:annotation>
386             </xsd:attribute>
387             
388             <xsd:attribute name="filter" type="xsd:string" use="optional">
389                 <xsd:annotation>
390                     <xsd:documentation><![CDATA[ filter ]]></xsd:documentation>
391                 </xsd:annotation>
392             </xsd:attribute>
393             <xsd:attribute name="retries" type="xsd:integer" use="optional">
394                 <xsd:annotation>
395                     <xsd:documentation><![CDATA[ retries  ]]></xsd:documentation>
396                 </xsd:annotation>
397             </xsd:attribute>
398             <xsd:attribute name="async" type="xsd:boolean" use="optional">
399                 <xsd:annotation>
400                     <xsd:documentation><![CDATA[ is async ]]></xsd:documentation>
401                 </xsd:annotation>    
402            </xsd:attribute>
403             <xsd:attribute name="queueSize" type="xsd:integer" use="optional">
404                 <xsd:annotation>
405                     <xsd:documentation><![CDATA[ 线程池队列大小  ]]></xsd:documentation>
406                 </xsd:annotation>
407             </xsd:attribute>
408            <xsd:attribute name="accepts" type="xsd:integer" use="optional">
409                 <xsd:annotation>
410                     <xsd:documentation><![CDATA[ 最大接收连接数 ]]></xsd:documentation>
411                 </xsd:annotation>    
412            </xsd:attribute>
413            <xsd:attribute name="dispatcher" type="xsd:string" use="optional">
414                 <xsd:annotation>
415                     <xsd:documentation><![CDATA[ 信息线程模型派发方式 ]]></xsd:documentation>
416                 </xsd:annotation>
417             </xsd:attribute>
418            <xsd:attribute name="server" type="xsd:string" use="optional">
419                 <xsd:annotation>
420                     <xsd:documentation><![CDATA[ 服务器端实现 ]]></xsd:documentation>
421                 </xsd:annotation>    
422            </xsd:attribute>
423            <xsd:attribute name="client" type="xsd:string" use="optional">
424                 <xsd:annotation>
425                     <xsd:documentation><![CDATA[ 客户端端实现 ]]></xsd:documentation>
426                 </xsd:annotation>    
427            </xsd:attribute>
428            
429            <xsd:attribute name="codec" type="xsd:string" use="optional">
430                 <xsd:annotation>
431                     <xsd:documentation><![CDATA[ codec ]]></xsd:documentation>
432                 </xsd:annotation>    
433            </xsd:attribute>
434            <xsd:attribute name="default" type="xsd:boolean" use="optional">
435                 <xsd:annotation>
436                     <xsd:documentation><![CDATA[ is default protocol ]]></xsd:documentation>
437                 </xsd:annotation>    
438            </xsd:attribute>
439                <xsd:attribute name="switcherService" type="xsd:string" use="optional">
440                 <xsd:annotation>
441                     <xsd:documentation><![CDATA[ switcherService ]]></xsd:documentation>
442                 </xsd:annotation>
443             </xsd:attribute>
444              <xsd:attribute name="heartbeatFactory" type="xsd:string" use="optional">
445                 <xsd:annotation>
446                     <xsd:documentation><![CDATA[ heartbeatFactory ]]></xsd:documentation>
447                 </xsd:annotation>
448             </xsd:attribute>
449            </xsd:extension>
450        </xsd:complexContent>
451     </xsd:complexType>
452     
453     <xsd:element name="protocol" type="abstractProtocolConfig">
454         <xsd:annotation> 
455             <xsd:documentation><![CDATA[ Service provider config ]]></xsd:documentation> 
456         </xsd:annotation>
457     </xsd:element>
458     <xsd:element name="registry" type="abstractRegistryConfig">
459         <xsd:annotation> 
460             <xsd:documentation><![CDATA[ Registry config ]]></xsd:documentation> 
461         </xsd:annotation>
462     </xsd:element>
463     <xsd:element name="method">
464         <xsd:complexType>
465         <xsd:attribute name="name" type="xsd:string" use="required">
466             <xsd:annotation>
467                 <xsd:documentation><![CDATA[ The method name (method.toString()). ]]></xsd:documentation>
468             </xsd:annotation>
469         </xsd:attribute>
470         <xsd:attribute name="argumentTypes" type="xsd:string" use="optional">
471             <xsd:annotation>
472                 <xsd:documentation><![CDATA[ 参数类型（逗号分隔）, 无参数用void. 如果方法无重载，则可不写 ]]></xsd:documentation>
473             </xsd:annotation>
474         </xsd:attribute>
475         <xsd:attribute name="requestTimeout" type="xsd:string" use="optional">
476             <xsd:annotation>
477                 <xsd:documentation><![CDATA[ The method invoke timeout. ]]></xsd:documentation>
478             </xsd:annotation>
479         </xsd:attribute>
480         <xsd:attribute name="retries" type="xsd:string" use="optional">
481             <xsd:annotation>
482                 <xsd:documentation><![CDATA[ The method retry times. ]]></xsd:documentation>
483             </xsd:annotation>
484         </xsd:attribute>
485         </xsd:complexType>
486     </xsd:element>
487     <xsd:element name="service">
488        <xsd:complexType>
489         <xsd:complexContent>
490             <xsd:extension base="abstractInterfaceConfig">
491                 <xsd:choice minOccurs="0" maxOccurs="unbounded">
492                     <xsd:element ref="method" minOccurs="0" maxOccurs="unbounded" />
493                     <xsd:element ref="beans:property" minOccurs="0" maxOccurs="unbounded" />
494                 </xsd:choice>
495                 <xsd:attribute name="id" type="xsd:ID" />
496                 <xsd:attribute name="export" type="xsd:string" use="optional">
497                     <xsd:annotation>
498                         <xsd:documentation><![CDATA[ 服务暴露的方式，包含协议及端口号，多个协议端口用"," 分隔. ]]></xsd:documentation>
499                     </xsd:annotation>
500                 </xsd:attribute>
501                 <xsd:attribute name="basicService" type="xsd:string" use="optional">
502                     <xsd:annotation>
503                         <xsd:documentation><![CDATA[ 基本service配置 ]]></xsd:documentation>
504                     </xsd:annotation>
505                 </xsd:attribute>
506                 <xsd:attribute name="host" type="xsd:string" use="optional">
507                     <xsd:annotation>
508                         <xsd:documentation><![CDATA[ 如果有多个ip，但只想暴露指定的某个ip，设置该参数 ]]></xsd:documentation>
509                     </xsd:annotation>
510                 </xsd:attribute>
511                 <xsd:attribute name="interface" type="xsd:token">
512                     <xsd:annotation>
513                         <xsd:documentation><![CDATA[ Defines the interface to advertise for this service in the service registry. ]]></xsd:documentation>
514                         <xsd:appinfo>
515                             <tool:annotation>
516                                 <tool:expected-type type="java.lang.Class"/>
517                             </tool:annotation>
518                         </xsd:appinfo>
519                     </xsd:annotation>
520                 </xsd:attribute>
521                 
522                 <xsd:attribute name="ref" type="xsd:string" use="optional">
523                     <xsd:annotation>
524                         <xsd:documentation><![CDATA[ The service implementation instance bean id. ]]></xsd:documentation>
525                     </xsd:annotation>
526                 </xsd:attribute>
527                 <xsd:attribute name="class" type="xsd:string" use="optional">
528                     <xsd:annotation>
529                         <xsd:documentation><![CDATA[ The service implementation class name. ]]></xsd:documentation>
530                     </xsd:annotation>
531                 </xsd:attribute>
532                 
533                 <xsd:attribute name="path" type="xsd:string" use="optional">
534                     <xsd:annotation>
535                         <xsd:documentation><![CDATA[ The service path. ]]></xsd:documentation>
536                     </xsd:annotation>
537                 </xsd:attribute>
538                 <xsd:attribute name="serialization" type="xsd:string" use="optional">
539                     <xsd:annotation>
540                         <xsd:documentation><![CDATA[ 序列化方式. ]]></xsd:documentation>
541                     </xsd:annotation>
542                 </xsd:attribute>
543                 <xsd:attribute name="extConfig" type="xsd:string" use="optional">
544                     <xsd:annotation>
545                         <xsd:documentation><![CDATA[ 扩展配置. ]]></xsd:documentation>
546                     </xsd:annotation>
547                 </xsd:attribute>
548             </xsd:extension>
549         </xsd:complexContent>
550         </xsd:complexType>
551     </xsd:element>
552     <xsd:element name="referer">
553        <xsd:complexType>
554         <xsd:complexContent>
555             <xsd:extension base="abstractInterfaceConfig">
556                 <xsd:choice minOccurs="0" maxOccurs="unbounded">
557                     <xsd:element ref="method" minOccurs="0" maxOccurs="unbounded" />
558                     <xsd:element ref="beans:property" minOccurs="0" maxOccurs="unbounded" />
559                 </xsd:choice>
560                 <xsd:attribute name="id" type="xsd:ID" />
561                 <xsd:attribute name="protocol" type="xsd:string" use="optional">
562                     <xsd:annotation>
563                         <xsd:documentation><![CDATA[ 使用的协议 ]]></xsd:documentation>
564                     </xsd:annotation>
565                 </xsd:attribute>
566                 <xsd:attribute name="interface" type="xsd:token" use="required">
567                     <xsd:annotation>
568                         <xsd:documentation><![CDATA[ The service interface class name. ]]></xsd:documentation>
569                         <xsd:appinfo>
570                             <tool:annotation>
571                                 <tool:expected-type type="java.lang.Class"/>
572                             </tool:annotation>
573                         </xsd:appinfo>
574                     </xsd:annotation>
575                 </xsd:attribute>
576                 <xsd:attribute name="client" type="xsd:string" use="optional">
577                     <xsd:annotation>
578                         <xsd:documentation><![CDATA[ 客户端类型 ]]></xsd:documentation>
579                     </xsd:annotation>
580                 </xsd:attribute>
581                 <xsd:attribute name="directUrl" type="xsd:string" use="optional">
582                     <xsd:annotation>
583                         <xsd:documentation><![CDATA[点对点直连服务提供地址 ]]></xsd:documentation>
584                     </xsd:annotation>
585                 </xsd:attribute>
586                 <xsd:attribute name="basicReferer" type="xsd:string" use="optional">
587                     <xsd:annotation>
588                         <xsd:documentation><![CDATA[ 基本referer配置 ]]></xsd:documentation>
589                     </xsd:annotation>
590                 </xsd:attribute>
591                 <xsd:attribute name="extConfig" type="xsd:string" use="optional">
592                     <xsd:annotation>
593                         <xsd:documentation><![CDATA[ 扩展配置. ]]></xsd:documentation>
594                     </xsd:annotation>
595                 </xsd:attribute>
596             </xsd:extension>
597         </xsd:complexContent>
598         </xsd:complexType>
599     </xsd:element>
600     
601     <xsd:element name="basicService">
602        <xsd:complexType>
603         <xsd:complexContent>
604             <xsd:extension base="abstractInterfaceConfig">
605                 <xsd:attribute name="id" type="xsd:ID" />
606                 <xsd:attribute name="export" type="xsd:string" use="optional">
607                     <xsd:annotation>
608                         <xsd:documentation><![CDATA[ 暴露的协议及端口，多个协议端口之间用","分隔 ]]></xsd:documentation>
609                     </xsd:annotation>
610                 </xsd:attribute>
611                 <xsd:attribute name="host" type="xsd:string" use="optional">
612                     <xsd:annotation>
613                         <xsd:documentation><![CDATA[ 如果有多个ip，但只想暴露指定的某个ip，设置该参数 ]]></xsd:documentation>
614                     </xsd:annotation>
615                 </xsd:attribute>
616             </xsd:extension>
617         </xsd:complexContent>
618         </xsd:complexType>
619     </xsd:element>
620     
621     <xsd:element name="basicReferer">
622        <xsd:complexType>
623         <xsd:complexContent>
624             <xsd:extension base="abstractInterfaceConfig">
625                 <xsd:attribute name="id" type="xsd:ID" />
626                 <xsd:attribute name="protocol" type="xsd:string" use="optional">
627                     <xsd:annotation>
628                         <xsd:documentation><![CDATA[ 使用的协议 ]]></xsd:documentation>
629                     </xsd:annotation>
630                 </xsd:attribute>
631                 <xsd:attribute name="mean" type="xsd:string" use="optional">
632                     <xsd:annotation>
633                         <xsd:documentation><![CDATA[ SLA平均响应时间 ]]></xsd:documentation>
634                     </xsd:annotation>
635                 </xsd:attribute>
636                 <xsd:attribute name="p90" type="xsd:string" use="optional">
637                     <xsd:annotation>
638                         <xsd:documentation><![CDATA[ SLA90%的响应时间 ]]></xsd:documentation>
639                     </xsd:annotation>
640                 </xsd:attribute>
641                 <xsd:attribute name="p99" type="xsd:string" use="optional">
642                     <xsd:annotation>
643                         <xsd:documentation><![CDATA[ SLA99%的响应时间 ]]></xsd:documentation>
644                     </xsd:annotation>
645                 </xsd:attribute>
646                 <xsd:attribute name="p999" type="xsd:string" use="optional">
647                     <xsd:annotation>
648                         <xsd:documentation><![CDATA[ SLA999%的响应时间 ]]></xsd:documentation>
649                     </xsd:annotation>
650                 </xsd:attribute>
651                 <xsd:attribute name="errorRate" type="xsd:string" use="optional">
652                     <xsd:annotation>
653                         <xsd:documentation><![CDATA[ SLA错误率 ]]></xsd:documentation>
654                     </xsd:annotation>
655                 </xsd:attribute>
656             </xsd:extension>
657         </xsd:complexContent>
658         </xsd:complexType>
659     </xsd:element>
660 
661     <xsd:element name="spi">
662         <xsd:complexType>
663             <xsd:complexContent>
664                 <xsd:extension base="abstractConfig">
665                     <xsd:attribute name="interfaceClass" type="xsd:token">
666                         <xsd:annotation>
667                             <xsd:documentation><![CDATA[ spi interface ]]></xsd:documentation>
668                             <xsd:appinfo>
669                                 <tool:annotation>
670                                     <tool:expected-type type="java.lang.Class" />
671                                 </tool:annotation>
672                             </xsd:appinfo>
673                         </xsd:annotation>
674                     </xsd:attribute>
675                     <xsd:attribute name="spiClass" type="xsd:token">
676                         <xsd:annotation>
677                             <xsd:documentation><![CDATA[ spi impl ]]></xsd:documentation>
678                             <xsd:appinfo>
679                                 <tool:annotation>
680                                     <tool:expected-type type="java.lang.Class" />
681                                 </tool:annotation>
682                             </xsd:appinfo>
683                         </xsd:annotation>
684                     </xsd:attribute>
685                 </xsd:extension>
686             </xsd:complexContent>
687         </xsd:complexType>
688     </xsd:element>
689     
690 </xsd:schema>

View Code

2.有个标签的格式，还需要标签的处理器，标签的处理器只要简单的继承NamespaceHandlerSupport这个类，具体的类如下，其中在init方法中，定义了标签和对应的解析器。motan中的对XML的解析起都是MotanBeanDefinitionParser，最终一对标签，最终转化为相应的BeanDefination.并放在一个并发的hashMap中，key为id,value是相应的beanDefination.

public class MotanNamespaceHandler extends NamespaceHandlerSupport {
    public final static Set<String> protocolDefineNames = new ConcurrentHashSet<String>();
    public final static Set<String> registryDefineNames = new ConcurrentHashSet<String>();
    public final static Set<String> basicServiceConfigDefineNames = new ConcurrentHashSet<String>();
    public final static Set<String> basicRefererConfigDefineNames = new ConcurrentHashSet<String>();

    @Override
    public void init() {
        registerBeanDefinitionParser("referer", new MotanBeanDefinitionParser(RefererConfigBean.class, false));
        registerBeanDefinitionParser("service", new MotanBeanDefinitionParser(ServiceConfigBean.class, true));
        registerBeanDefinitionParser("protocol", new MotanBeanDefinitionParser(ProtocolConfig.class, true));
        registerBeanDefinitionParser("registry", new MotanBeanDefinitionParser(RegistryConfig.class, true));
        registerBeanDefinitionParser("basicService", new MotanBeanDefinitionParser(BasicServiceInterfaceConfig.class, true));
        registerBeanDefinitionParser("basicReferer", new MotanBeanDefinitionParser(BasicRefererInterfaceConfig.class, true));
        registerBeanDefinitionParser("spi", new MotanBeanDefinitionParser(SpiConfigBean.class, true));
    }

}

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原文地址：https://www.cnblogs.com/hansongjiang/p/5620311.html