spring cloud - 2

consumer:

1. pom.xml

    1) properties

    <properties>
                ......
        <spring-cloud.version>Finchley.SR1</spring-cloud.version>
    </properties>

    2) dependencies

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zookeeper-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
        </dependency>

3) dependencyManagement

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

2. config file

    1) bootstrap.yml

#http://cloud.spring.io/spring-cloud-static/Finchley.SR1/multi/multi_spring-cloud-zookeeper-config.html
spring:
  cloud:
    zookeeper:
      discovery:
         register: false
      connectString: 192.168.1.186:2181,192.168.1.187:2181,192.168.1.188:2181

   2) application.properties

server.port=8282
spring.application.name=springcloud-consumer

3. discovery client - ON

    spring boot main class.

@EnableDiscoveryClient

package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

@SpringBootApplication
@EnableDiscoveryClient
public class DemoSpringcloudConsumerApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoSpringcloudConsumerApplication.class, args);
    }
}

4. feign class

    1) interface

@FeignClient(name = "springcloud-zk")
    interface TheClient {
  
        @RequestMapping(path = "/user/listPage", method = RequestMethod.GET)
        String findAll();
    }

Note:

FeignClient默认只能在方法的RequestMapping 上加全部url路径，
类的RequestMapping，不能合并到方法上；

http://www.jianshu.com/p/191d45210d16

全url路径=class+method

    2) impl

    public String findAll() {
        return theClient.findAll();    
    }

5. invoke feign class

package com.example.demo.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import com.example.demo.feign.springcloud_zk.FindAllClient;

@RestController
public class Springcloud_zk_Controller {

    @Autowired
    FindAllClient findAllClient;
    
    @RequestMapping(value = "/listPage", method = RequestMethod.GET)
    public String getUserAll() {
        return findAllClient.findAll();
    }
}

 Reference:

1. An Intro to Spring Cloud Zookeeper