（六）接口抽取及依賴版本統一

前面的項目，咱們會發現有個接口是同樣的，咱們須要單獨抽取出來，統一維護；

以及兩個項目的maven依賴包的版本也是同樣的，咱們也須要單獨抽取出來，統一維護；

 

抽取接口，咱們經過新建一個項目，而後其餘兩個項目依賴這個這個項目便可；

統一依賴包版本，咱們能夠經過創建parent項目，來統一管理依賴以及版本，子項目繼承便可；

 

咱們新建dubbo-demo-api項目，而後把DemoProviderService接口類放到該項目裏便可；

 

咱們再新建一個dubbo-demo-parent項目；

 

pom.xml裏：

 1 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 2   <modelVersion>4.0.0</modelVersion>
 3   <groupId>com.wishwzp</groupId>
 4   <artifactId>dubbo-demo-parent</artifactId>
 5   <version>0.0.1-SNAPSHOT</version>
 6   <packaging>pom</packaging>
 7    
 8   <!-- 依賴版本管理 -->
 9   <properties>
10        <dubbo-demo-api.version>0.0.1-SNAPSHOT</dubbo-demo-api.version>
11        <dubbo.version>2.6.0</dubbo.version>
12        <zkclient.version>0.10</zkclient.version>
13        <curator-framework.version>4.0.1</curator-framework.version>
14        <fastjson.version>1.2.46</fastjson.version>
15        <log4j.version>1.2.17</log4j.version>
16        <slf4j-api.version>1.7.25</slf4j-api.version>
17        <commons-lang3.version>3.4</commons-lang3.version>
18        <netty-all.version>4.0.35.Final</netty-all.version>
19   </properties>
20     
21    <!-- 依賴管理-->
22    <dependencyManagement>
23      <dependencies>
24          <dependency>
25                 <groupId>com.wishwzp</groupId>
26                 <artifactId>dubbo-demo-api</artifactId>
27                 <version>${dubbo-demo-api.version}</version>
28              </dependency>
29             <dependency>
30                 <groupId>com.alibaba</groupId>
31                 <artifactId>dubbo</artifactId>
32                 <version>${dubbo.version}</version>
33             </dependency>
34             <dependency>
35                 <groupId>com.101tec</groupId>
36                 <artifactId>zkclient</artifactId>
37                 <version>${zkclient.version}</version>
38             </dependency>
39             <dependency>
40                 <groupId>org.apache.curator</groupId>
41                 <artifactId>curator-framework</artifactId>
42                 <version>${curator-framework.version}</version>
43             </dependency>
44             <dependency>
45                 <groupId>com.alibaba</groupId>
46                 <artifactId>fastjson</artifactId>
47                 <version>${fastjson.version}</version>
48             </dependency>
49             <dependency>
50                 <groupId>log4j</groupId>
51                 <artifactId>log4j</artifactId>
52                 <version>${log4j.version}</version>
53             </dependency>
54             <dependency>
55                 <groupId>org.slf4j</groupId>
56                 <artifactId>slf4j-api</artifactId>
57                 <version>${slf4j-api.version}</version>
58             </dependency>
59             <dependency>
60                 <groupId>org.apache.commons</groupId>
61                 <artifactId>commons-lang3</artifactId>
62                 <version>${commons-lang3.version}</version>
63             </dependency>
64             <dependency>
65                 <groupId>io.netty</groupId>
66                 <artifactId>netty-all</artifactId>
67                 <version>${netty-all.version}</version>
68             </dependency>
69        </dependencies>
70    </dependencyManagement>
71 </project>

dubbo-demo-provider項目pom.xml修改：

 1 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 2   <modelVersion>4.0.0</modelVersion>
 3   <parent>
 4       <groupId>com.wishwzp</groupId>
 5       <artifactId>dubbo-demo-parent</artifactId>
 6       <version>0.0.1-SNAPSHOT</version>
 7   </parent>
 8   <artifactId>dubbo-demo-provider</artifactId>
 9    
10   <dependencies>
11         <dependency>
12             <groupId>com.wishwzp</groupId>
13             <artifactId>dubbo-demo-api</artifactId>
14          </dependency>
15         <dependency>
16             <groupId>com.alibaba</groupId>
17             <artifactId>dubbo</artifactId>
18         </dependency>
19         <dependency>
20             <groupId>com.101tec</groupId>
21             <artifactId>zkclient</artifactId>
22         </dependency>
23         <dependency>
24             <groupId>org.apache.curator</groupId>
25             <artifactId>curator-framework</artifactId>
26         </dependency>
27         <dependency>
28             <groupId>com.alibaba</groupId>
29             <artifactId>fastjson</artifactId>
30         </dependency>
31         <dependency>
32             <groupId>log4j</groupId>
33             <artifactId>log4j</artifactId>
34         </dependency>
35         <dependency>
36             <groupId>org.slf4j</groupId>
37             <artifactId>slf4j-api</artifactId>
38         </dependency>
39         <dependency>
40             <groupId>org.apache.commons</groupId>
41             <artifactId>commons-lang3</artifactId>
42         </dependency>
43         <dependency>
44             <groupId>io.netty</groupId>
45             <artifactId>netty-all</artifactId>
46         </dependency>
47     </dependencies>
48 </project>

相似，dubbo-demo-consumer項目pom.xml修改：

 1 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 2   <modelVersion>4.0.0</modelVersion>
 3   <parent>
 4       <groupId>com.wishwzp</groupId>
 5       <artifactId>dubbo-demo-parent</artifactId>
 6       <version>0.0.1-SNAPSHOT</version>
 7   </parent>
 8   <artifactId>dubbo-demo-consumer</artifactId>
 9    
10   <dependencies>
11        <dependency>
12             <groupId>com.wishwzp</groupId>
13             <artifactId>dubbo-demo-api</artifactId>
14          </dependency>
15         <dependency>
16             <groupId>com.alibaba</groupId>
17             <artifactId>dubbo</artifactId>
18         </dependency>
19         <dependency>
20             <groupId>com.101tec</groupId>
21             <artifactId>zkclient</artifactId>
22         </dependency>
23         <dependency>
24             <groupId>org.apache.curator</groupId>
25             <artifactId>curator-framework</artifactId>
26         </dependency>
27         <dependency>
28             <groupId>com.alibaba</groupId>
29             <artifactId>fastjson</artifactId>
30         </dependency>
31         <dependency>
32             <groupId>log4j</groupId>
33             <artifactId>log4j</artifactId>
34         </dependency>
35         <dependency>
36             <groupId>org.slf4j</groupId>
37             <artifactId>slf4j-api</artifactId>
38         </dependency>
39         <dependency>
40             <groupId>org.apache.commons</groupId>
41             <artifactId>commons-lang3</artifactId>
42         </dependency>
43         <dependency>
44             <groupId>io.netty</groupId>
45             <artifactId>netty-all</artifactId>
46         </dependency>
47   </dependencies>
48 </project>

 

測試結果OK；