dubbo


阅读数: 次   

快捷键:

1.alt+下划线字母 —>打开相对应的选项

2.ctrl+shift+f12—->切换大小窗口

3.ctrl-shift+o—->翻译

4.alt+左右键盘—>切换不同的窗口

5.ctrl+I —>重写方法

6.ctrl+alt+L—>格式化pom.xml依赖格式

步骤

创建三个web工程:

1.link-interface—>对外的接口

它是一个maven工程,dubbo官方推荐使用的一个模式,将实体bean和业务接口存放到接口工程中

2.link-userservice-provider—>实现接口业务方法,并且暴漏这些接口

3.consumer—>调用

interface

注意:这里的实体类要实现序列化Serializable

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
public class Student implements Serializable {
    private Integer id;

    private String name;

    private Integer age;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }
}
1
2
3
4
5
6
7
8
9
10
11
12
public interface UserService {


    /**
     * 根据用户标识获取用户的信息
     * @param id
     * @param username
     * @return
     */
    User queryUserById(Integer id,String username);
}

link-userservice-provide

dubbo-zk-userservice-provider.xml:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://dubbo.apache.org/schema/dubbo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd">

    <!--声明dubbo服务提供者的名称:保证唯一性-->
    <!--这里application选择的是第二个http://dubbo.apache.org/schema/dubbo-->
    <dubbo:application name="007-zk-userservice-provider"/>

    <!--声明dubbo使用的协议名称和端口号-->
    <dubbo:protocol name="dubbo" port="20880"/>

    <!--现在要使用zookeeper注册中心-->
    <!--指定注册中心地址和端口号-->
    <!--<dubbo:registry address="zookeeper://localhost:2181"/>-->
    <!--使用linux系统中的zookeeper服务,使用虚拟机中linux的ip地址,用ifconfig查看-->
    <dubbo:registry address="zookeeper://192.168.154.128:2181"/>

    <!--暴露服务接口-->
    <dubbo:service interface="com.bjpowernode.dubbo.service.UserService" ref="userServiceImpl"/>

    <!--加载接口实现类-->
    <bean id="userServiceImpl" class="com.bjpowernode.dubbo.service.impl.UserServiceImpl"/>
</beans>

pom.xml

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
<dependencies>

       <!--Spring依赖-->
       <dependency>
           <groupId>org.springframework</groupId>
           <artifactId>spring-context</artifactId>
           <version>4.3.16.RELEASE</version>
       </dependency>
       <dependency>
           <groupId>org.springframework</groupId>
           <artifactId>spring-webmvc</artifactId>
           <version>4.3.16.RELEASE</version>
       </dependency>

       <!--Dubbo依赖-->
       <dependency>
           <groupId>com.alibaba</groupId>
           <artifactId>dubbo</artifactId>
           <version>2.6.2</version>
       </dependency>

       <!--接口工程依赖-->
       <dependency>
           <groupId>com.bjpowernode.dubbo</groupId>
           <artifactId>006-zk-interface</artifactId>
           <version>1.0.0</version>
       </dependency>

       <!--zookeeper依赖-->
       <dependency>
           <groupId>org.apache.curator</groupId>
           <artifactId>curator-framework</artifactId>
           <version>4.1.0</version>
       </dependency>


   </dependencies>

   <build>
       <plugins>
           <!--JDK1.8编译插件-->
           <plugin>
               <artifactId>maven-compiler-plugin</artifactId>
               <version>3.1</version>
               <configuration>
                   <source>1.8</source>
                   <target>1.8</target>
               </configuration>
           </plugin>
       </plugins>
   </build>

web.xml:注册监听器

1
2
3
4
5
6
7
<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:dubbo-zk-userservice-provider.xml</param-value>
	</context-param>
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>

consumer

dobbo-zk-consumer.xml:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://dubbo.apache.org/schema/dubbo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd">

    <!--声明dubbo服务消费者名称:保证唯一性-->
    <dubbo:application name="008-zk-consumer"/>

    <!--指定注册中心-->
    <!--<dubbo:registry address="zookeeper://localhost:2181"/>-->
    <!--使用linux系统中的zookeeper服务-->
    <dubbo:registry address="zookeeper://192.168.154.128:2181"/>

    <!--引用远程接口服务-->
    <dubbo:reference id="userService" interface="com.bjpowernode.dubbo.service.UserService"/>

</beans>

applicationContext.xml

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--扫描组件-->
    <context:component-scan base-package="com.bjpowernode.dubbo.web"/>

    <!--配置注解驱动-->
    <mvc:annotation-driven/>

    <!--视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

pom.xml

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
<!--格式化:ctrl+alt+L-->

    <dependencies>
        <!--Spring依赖-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.3.16.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.3.16.RELEASE</version>
        </dependency>

        <!--dubbo依赖-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>dubbo</artifactId>
            <version>2.6.2</version>
        </dependency>

        <!--接口工程-->
        <dependency>
            <groupId>com.bjpowernode.dubbo</groupId>
            <artifactId>006-zk-interface</artifactId>
            <version>1.0.0</version>
        </dependency>

        <!--注册中心依赖-->
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-framework</artifactId>
            <version>4.1.0</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <!--JDK1.8编译插件-->
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

web.xml:注册中央调度器

1
2
3
4
5
6
7
8
9
10
11
12
<servlet>
		<servlet-name>dispatcherServlet</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:applicationContext.xml,classpath:dubbo-zk-consumer.xml</param-value>
		</init-param>
	</servlet>
	<servlet-mapping>
		<servlet-name>dispatcherServlet</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>

Controller调用:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
@Controller
public class UserController {

    @Autowired
    private UserService userService;

    @Autowired
    private UserService userService2;

    @RequestMapping(value = "/userDetail")
    public String userDetail(Model model,Integer id,String username) {

        User user = userService.queryUserById(id, username);

        User user2 = userService2.queryUserById(id,username);

        model.addAttribute("user",user);
        model.addAttribute("user2",user2);

        return "userDetail";
    }

思路

1
2
3
4
5
6
7
思路:
1.创建一个maven web工程:服务的消费者
2.配置pom文件:添加需要的依赖(spring,dubbo)
3.设置dubbo的核心配置文件()
4.编写controller
5.配置中央调度器(就是一个servlet:DispatcherServlet)

赏

谢谢你请我吃糖果

支付宝
微信

扫一扫，分享到微信

微信分享二维码

tag:

    缺失模块。
    1、请确保node版本大于6.2
    2、在博客根目录（注意不是yilia根目录）执行以下命令：
    npm i hexo-generator-json-content --save

    3、在根目录_config.yml里添加配置： 

      jsonContent:
    meta: false
    pages: false
    posts:
      title: true
      date: true
      path: true
      text: false
      raw: false
      content: false
      slug: false
      updated: false
      comments: false
      link: false
      permalink: false
      excerpt: false
      categories: false
      tags: true

很惭愧<br><br>只做了一点微小的工作<br>谢谢大家