Create a service layer [04] and service producers start

This paper will build on already good dubbo and zookeeper, create producer services, and registered with the zookeeper.

1, environmental constraints

• win10 64 operating system
• idea2018.1.5
• maven-3.0.5
• jdk-8u162-windows-x64

2, software download

Baidu network disk:
Link: https://pan.baidu.com/s/1gfnI8NqUYgYK1g0ULGIV2w
extraction code: q9pl

3, the premise of restraint

• zookeeper and dubbo has been installed and started
• This album will be "03 to create a common project maven" do finish

4. Create a new module fbs-service, the following steps:

In pom.xml to add a dependency:

        <dependency>
            <groupId>net.wanho.fenbushi</groupId>
            <artifactId>fbs-interface</artifactId>
            <version>1.0-SNAPSHOT</version>
            <scope>compile</scope>
        </dependency>

pom.xml build tag modified as follows:

    <build>
        <finalName>fbs-service</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <configuration>
                    <path>/</path>
                    <port>8081</port>
                </configuration>
            </plugin>
        </plugins>
    </build>

5, the module in the src / main folder java added below, to Sources Root, net.wanho.fenbushi.service.impl created in this folder package, the package added UserServiceImpl.java category below.

package net.wanho.fenbushi.service.impl;

import net.wanho.fenbushi.pojo.User;
import net.wanho.fenbushi.service.UserService;

import java.util.ArrayList;
import java.util.List;

@Service
public class UserServiceImpl implements UserService {
    @Override
    public List<User> queryUsers() {
        List<User> list = new ArrayList<>();
        //这里面查询数据库并不是我们关注的主要矛盾
        list.add(new User(1,"ali"));
        list.add(new User(2,"zhangli"));
        list.add(new User(3,"xiaoli"));
        return list;
    }
}

6, the module in the src / main Add the following resources folder set Resources Root, applicationContext-service.xml created in this folder.

<?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:dubbo="http://code.alibabatech.com/schema/dubbo"
       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://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

    <context:component-scan base-package="net.wanho.fenbushi.service"></context:component-scan>

    <!-- 发布dubbo服务 -->
    <dubbo:application name="fenbushi-service"/>
    <!-- 提供依赖信息，这是我们zookeeper的地址 -->
    <dubbo:registry protocol="zookeeper" address="192.168.100.192:2181" />
    <!-- 暴露一个服务在20880端口 -->
    <dubbo:protocol name="dubbo" port="20882"/>
    <!-- 暴露一个实际服务,ref是接口实现类的首字母小写而成 -->
    <dubbo:service interface="net.wanho.fenbushi.service.UserService" ref="userServiceImpl" timeout="30000"/>


</beans>

7, modify src / main / webapp / WEB-INF / web.xml, parent container can be arranged

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext-service.xml</param-value>
  </context-param>
  
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
</web-app>

Project is structured as follows:

8, start-up and testing

Open your browser and enter http://192.168.100.192:8080/dubbo, proceed as follows:
We see, producer services has been the lack of consumers, here we create web layer, as a service to consumers.