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eureka 服务于发现（集群模式）

1......pom.xml 父类依赖

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <project xmlns="http://maven.apache.org/POM/4.0.0"
 3          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 5     <modelVersion>4.0.0</modelVersion>
 6 
 7     <groupId>com.wsc</groupId>
 8     <artifactId>spring-cloud-parent</artifactId>
 9     <version>1.0-SNAPSHOT</version>
10     <modules>
11 <!--        封装的实体类 product-->
12         <module>../../common</module>
13 <!--        提供者 端口号：8001-->
14         <module>../../provider</module>
15 <!--        消费者 端口号：81-->
16         <module>../../consumer</module>
17 <!--        注册中心 端口号：6001-->
18         <module>../../eureka-6001</module>
19 <!--        注册中心 端口号：6002-->
20         <module>../../eureka-6002</module>
21 <!--        提供者 端口号：8002-->
22         <module>../../common-common</module>
23 <!--        消费者 端口号：80-->
24         <module>../../comsumer-consumer</module>
25     </modules>
26     <!--手动指定pom-->
27     <packaging>pom</packaging>
28     <!--springboot版本  2.0.7-->
29     <parent>
30         <groupId>org.springframework.boot</groupId>
31         <artifactId>spring-boot-starter-parent</artifactId>
32         <version>2.0.7.RELEASE</version>
33     </parent>
34     <properties>
35         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
36         <maven.compiler.source>1.8</maven.compiler.source>
37         <maven.compiler.target>1.8</maven.compiler.target>
38         <junit.version>4.12</junit.version>
39         <!--spring Cloud  最新的稳定版  Finchley SR2-->
40         <spring.cloud.version>Finchley.SR2</spring.cloud.version>
41     </properties>
42     <!--依赖声明-->
43     <dependencyManagement>
44         <dependencies>
45             <dependency>
46                 <groupId>org.springframework.cloud</groupId>
47                 <artifactId>spring-cloud-dependencies</artifactId>
48                 <version>${spring.cloud.version}</version>
49 <!--                不可或缺-->
50                 <scope>import</scope>
51                 <type>pom</type>
52             </dependency>
53             <dependency>
54                 <groupId>org.mybatis.spring.boot</groupId>
55                 <artifactId>mybatis-spring-boot-starter</artifactId>
56                 <version>1.3.2</version>
57             </dependency>
58             <!--数据源-->
59             <dependency>
60                 <groupId>com.alibaba</groupId>
61                 <artifactId>druid</artifactId>
62                 <version>1.1.12</version>
63             </dependency>
64 <!--            数据库  8.0.13-->
65             <dependency>
66                 <groupId>mysql</groupId>
67                 <artifactId>mysql-connector-java</artifactId>
68                 <version>8.0.13</version>
69             </dependency>
70             <!--测试单元-->
71             <dependency>
72                 <groupId>junit</groupId>
73                 <artifactId>junit</artifactId>
74                 <version>${junit.version}</version>
75                 <scope>test</scope>
76             </dependency>
77         </dependencies>
78     </dependencyManagement>
79 </project>

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2......common 实体类

 1 package com.wsc.core.pojo;
 2 
 3 /**
 4  * @version 1.0
 5  * @ClassName Product
 6  * @Description TODO
 7  * @Author WSC
 8  * @Date 2019/8/26 14:53
 9  **/
10 public class Product {
11     private Long pid;
12     private String productName;
13     private  String dbSource;
14 
15     public Product(String productName) {
16         this.productName = productName;
17     }
18 
19     public Product(Long pid, String productName, String dbSource) {
20         this.pid = pid;
21         this.productName = productName;
22         this.dbSource = dbSource;
23     }
24     public Product() {
25     }
26 
27     public Long getPid() {
28         return pid;
29     }
30 
31     public void setPid(Long pid) {
32         this.pid = pid;
33     }
34 
35     public String getProductName() {
36         return productName;
37     }
38 
39     public void setProductName(String productName) {
40         this.productName = productName;
41     }
42 
43     public String getDbSource() {
44         return dbSource;
45     }
46 
47     public void setDbSource(String dbSource) {
48         this.dbSource = dbSource;
49     }
50 }

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3......eureka-6001 eureka注册中心端口号：6001

　　pom.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <project xmlns="http://maven.apache.org/POM/4.0.0"
 3          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 5     <parent>
 6         <artifactId>spring-cloud-parent</artifactId>
 7         <groupId>com.wsc</groupId>
 8         <version>1.0-SNAPSHOT</version>
 9         <relativePath>../springCloud/spring-cloud-parent/pom.xml</relativePath>
10     </parent>
11     <modelVersion>4.0.0</modelVersion>
12 
13     <artifactId>eureka-6001</artifactId>
14 
15 
16     <properties>
17         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
18         <maven.compiler.source>1.8</maven.compiler.source>
19         <maven.compiler.target>1.8</maven.compiler.target>
20     </properties>
21     <dependencies>
22         <!--导入Eureka Server服务端依赖-->
23         <dependency>
24             <groupId>org.springframework.cloud</groupId>
25             <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
26         </dependency>
27     </dependencies>
28 </project>

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启动类

 1 package com.wsc.core.eureka;
 2 
 3 import org.springframework.boot.SpringApplication;
 4 import org.springframework.boot.autoconfigure.SpringBootApplication;
 5 import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
 6 
 7 /**
 8  * @version 1.0
 9  * @ClassName Start_6001
10  * @Description TODO
11  * @Author WSC
12  * @Date 2019/8/28 14:11
13  **/
14 @EnableEurekaServer //声明注册中心
15 @SpringBootApplication
16 public class Start_6001 {
17     public static void main(String[] args) {
18         SpringApplication.run(Start_6001.class,args);
19     }
20 }

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yml 配置文件

 1 server:
 2   port: 6001
 3 eureka:
 4   instance:
 5     hostname: eureka6001.com
 6   server:
 7     enable-self-preservation: false  # 禁用自我保护模式
 8   client:
 9     register-with-eureka: false #服务注册开关
10     fetch-registry: false #服务发现开关
11     service-url:
12      defaultZone: http://eureka6002.com:6002/eureka/   #  1  显示主机名 单机是配置自己  如果不配置默认端口是8761
13 #         http://${eureka.instance.hostname}:${server.port}/eureka   #  不显示主机名

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4......eureka-6002 eureka注册中心端口号：6002

　　pom.xml　　

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <project xmlns="http://maven.apache.org/POM/4.0.0"
 3          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 5     <parent>
 6         <artifactId>spring-cloud-parent</artifactId>
 7         <groupId>com.wsc</groupId>
 8         <version>1.0-SNAPSHOT</version>
 9         <relativePath>../springCloud/spring-cloud-parent/pom.xml</relativePath>
10     </parent>
11     <modelVersion>4.0.0</modelVersion>
12 
13     <artifactId>eureka-6002</artifactId>
14 
15 
16     <properties>
17         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
18         <maven.compiler.source>1.8</maven.compiler.source>
19         <maven.compiler.target>1.8</maven.compiler.target>
20     </properties>
21     <dependencies>
22         <dependency>
23             <groupId>org.springframework.cloud</groupId>
24             <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
25         </dependency>
26 
27     </dependencies>
28 </project>

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　启动类

 1 package com.wsc.core.eureka;
 2 
 3 import org.springframework.boot.SpringApplication;
 4 import org.springframework.boot.autoconfigure.SpringBootApplication;
 5 import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
 6 
 7 /**
 8  * @version 1.0
 9  * @ClassName Start_6002
10  * @Description TODO
11  * @Author WSC
12  * @Date 2019/8/28 16:54
13  **/
14 @EnableEurekaServer //声明注册中心
15 @SpringBootApplication
16 public class Start_6002 {
17     public static void main(String[] args) {
18         SpringApplication.run(Start_6002.class,args);
19     }
20 }

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　yml配置

 1 server:
 2   port: 6002
 3 eureka:
 4   instance:
 5     hostname: eureka6002.com
 6   server:
 7     enable-self-preservation: false  # 禁用自我保护模式
 8   client:
 9     register-with-eureka: false #服务注册开关
10     fetch-registry: false #服务发现开关
11     service-url:
12       defaultZone: http://eureka6001.com:6001/eureka/   #  1  显示主机名 单机是配置自己  如果不配置默认端口是8761
13             #        http://${eureka.instance.hostname}:${server.port}/eureka   #  不显示主机名

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5.... C:// windows / system32 / drivers / etc / hosts （末尾添加）

　　　添加属性配置关联：

127.0.0.1 eureka6002.com

需要刷新：1 ：重启电脑 2 ： dos 窗口执行代码　：1..... ipconfig / displaydns 2..... ipconfig / flushdns

测试网址输入：

http://eureka6001.com:6001/     http://eureka6002.com:6002/

6..... provider 提供者端口号：8001

　　resources / mybatis / mapper / ProductMapper.xml 配置映射文件

 1 <?xml version="1.0" encoding="UTF-8" ?>
 2 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
 3         "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 4 <mapper namespace="com.wsc.core.mapper.ProductMapper">
 5     <select id="findAll" resultType="Product">
 6         select * from product;
 7     </select>
 8 
 9     <select id="findById" resultType="Product" parameterType="Long">
10         select * from product where pid=#{pid};
11     </select>
12 
13     <insert id="add"    parameterType="Product" >
14         insert into product values (null,#{product_name},#{db_source});
15     </insert>
16 </mapper>

ProductMapper.xml

　　pom.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <project xmlns="http://maven.apache.org/POM/4.0.0"
 3          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 5     <parent>
 6         <artifactId>spring-cloud-parent</artifactId>
 7         <groupId>com.wsc</groupId>
 8         <version>1.0-SNAPSHOT</version>
 9         <relativePath>../springCloud/spring-cloud-parent/pom.xml</relativePath>
10     </parent>
11     <modelVersion>4.0.0</modelVersion>
12 
13     <artifactId>provider</artifactId>
14 
15 
16     <properties>
17         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
18         <maven.compiler.source>1.8</maven.compiler.source>
19         <maven.compiler.target>1.8</maven.compiler.target>
20     </properties>
21     <dependencies>
22         <dependency>
23             <groupId>com.wsc</groupId>
24             <artifactId>common</artifactId>
25             <version>${project.version}</version>
26         </dependency>
27         <dependency>
28             <groupId>org.springframework.boot</groupId>
29             <artifactId>spring-boot-starter-web</artifactId>
30         </dependency>
31         <dependency>
32             <groupId>mysql</groupId>
33             <artifactId>mysql-connector-java</artifactId>
34         </dependency>
35         <dependency>
36             <groupId>org.mybatis.spring.boot</groupId>
37             <artifactId>mybatis-spring-boot-starter</artifactId>
38         </dependency>
39         <dependency>
40             <groupId>junit</groupId>
41             <artifactId>junit</artifactId>
42         </dependency>
43         <dependency>
44             <groupId>com.alibaba</groupId>
45             <artifactId>druid</artifactId>
46         </dependency>
47         <dependency>
48             <groupId>org.springframework.boot</groupId>
49             <artifactId>spring-boot-starter-test</artifactId>
50         </dependency>
51         <!--服务提供者注册进服务中心-->
52         <dependency>
53             <groupId>org.springframework.cloud</groupId>
54             <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
55         </dependency>
56     </dependencies>
57 </project>

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　　resources / mybatis / mybatis.cfg.xml 配置开启驼峰命名

 1 <?xml version="1.0" encoding="UTF-8" ?>
 2 <!DOCTYPE configuration
 3         PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
 4         "http://mybatis.org/dtd/mybatis-3-config.dtd">
 5 <configuration>
 6     <settings>
 7         <!--开启驼峰命名-->
 8         <setting name="mapUnderscoreToCamelCase" value="true"/>
 9     </settings>
10 </configuration>

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　　resources / application.yml 数据库扫描文件注册客户端

 1 server:
 2   port: 8001
 3 mybatis:
 4   config-location: classpath:mybatis/mybatis.cfg.xml #mybatis 配置文件路径
 5   type-aliases-package: com.wsc.core.pojo # entity别名类所在包
 6   mapper-locations: mybatis/mapper/*.xml    # mapper映射文件
 7 spring:
 8   application:
 9     name: microserver-product #这个很重要，这在以后的服务与服务之间相互调用一般都是根据这个name
10   datasource:
11     type: com.alibaba.druid.pool.DruidDataSource
12     driver-class-name: com.mysql.cj.jdbc.Driver
13     url: jdbc:mysql://127.0.0.1:3306/springcloud_db01?serverTimezone=GMT%2B8
14     password: wsc
15     username: root
16     dbcp2:
17       min-idle: 5                         # 数据库连接池的最小维持连接数
18       initial-size: 5                     # 初始化连接数
19       max-total: 5                        # 最大连接数
20       max-wait-millis: 150                                    # 等待连接获取的最大超时时间
21 
22 eureka:
23   client:
24     register-with-eureka: true             #服务注册开关
25     fetch-registry: true                  #服务发现开关
26     service-url:
27       defaultZone: http://eureka6001.com:6001/eureka/, http://eureka6002.com:6002/eureka/    # http://localhost:6001/eureka # 1 显示主机名
28       instance:
29         instanceId: ${spring.application.name}:${server.port}   #  2   指定实例ID 不显示主机名
30         preferipAddress: true

application.yml

　　service / ProductService

 1 package com.wsc.core.service;
 2 
 3 import com.wsc.core.pojo.Product;
 4 
 5 import java.util.List;
 6 
 7 public interface ProductService {
 8     public List<Product> findAll();
 9 
10     public Product findById(Long id);
11 
12     public Boolean add(Product product);
13 }

ProductService

　　service /impl /

 1 package com.wsc.core.service.impl;
 2 
 3 import com.wsc.core.mapper.ProductMapper;
 4 import com.wsc.core.pojo.Product;
 5 import com.wsc.core.service.ProductService;
 6 import org.springframework.beans.factory.annotation.Autowired;
 7 import org.springframework.stereotype.Service;
 8 
 9 import java.util.List;
10 
11 /**
12  * @version 1.0
13  * @ClassName ProductServiceImpl
14  * @Description TODO
15  * @Author WSC
16  * @Date 2019/8/27 10:53
17  **/
18 @Service
19 public class ProductServiceImpl implements ProductService {
20     @Autowired
21     private ProductMapper productMapper;
22     @Override
23     public List<Product> findAll() {
24         return productMapper.findAll();
25     }
26 
27     @Override
28     public Product findById(Long id) {
29         return productMapper.findById(id);
30     }
31 
32     @Override
33     public Boolean add(Product product) {
34         return productMapper.add(product);
35     }
36 }

ProductServiceImpl

　　mapper /

 1 package com.wsc.core.mapper;
 2 
 3 import com.wsc.core.pojo.Product;
 4 
 5 import java.util.List;
 6 
 7 public interface ProductMapper {
 8     public List<Product> findAll();
 9 
10     public Product findById(Long id);
11 
12     public Boolean add(Product product);
13 }

ProductMapper

　　controller /

 1 package com.wsc.core.controller;
 2 
 3 import com.wsc.core.pojo.Product;
 4 import com.wsc.core.service.ProductService;
 5 import org.springframework.beans.factory.annotation.Autowired;
 6 import org.springframework.web.bind.annotation.*;
 7 
 8 import java.util.List;
 9 
10 /**
11  * @version 1.0
12  * @ClassName ProductController
13  * @Description TODO
14  * @Author WSC
15  * @Date 2019/8/27 11:06
16  **/
17 @RestController //返回json数据
18 public class ProductController {
19     @Autowired
20     private ProductService productService;
21     //查询全部
22     @RequestMapping(value ="/product/get/list",method = RequestMethod.GET)
23     public List<Product> getAll(){
24         return productService.findAll();
25     }
26 
27 //查询id
28     @RequestMapping(value = "/product/get/{pid}",method = RequestMethod.GET)
29     public Product getById(@PathVariable("pid")Long pid){
30         return productService.findById(pid);
31     }
32 
33 //添加
34     @RequestMapping(value ="/product/get/add",method = RequestMethod.POST)
35     public boolean add(@RequestBody Product product){
36         return productService.add(product);
37     }
38 }

ProductController

　　Start_8001

 1 package com.wsc.core;
 2 
 3 import org.mybatis.spring.annotation.MapperScan;
 4 import org.springframework.boot.SpringApplication;
 5 import org.springframework.boot.autoconfigure.SpringBootApplication;
 6 import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
 7 
 8 /**
 9  * @version 1.0
10  * @ClassName Start
11  * @Description TODO
12  * @Author WSC
13  * @Date 2019/8/27 10:54
14  **/
15 @EnableEurekaClient //  本服务启动后 自动注册进Eureka中心
16 @MapperScan("com.wsc.core.mapper") //mapper扫描包 类 ProductMapper
17 @SpringBootApplication
18 public class Start_8001 {
19     public static void main(String[] args) {
20         SpringApplication.run(Start_8001.class,args);
21     }
22 }

Start_8001

　　测试网址输入

http://localhost:8001/product/get/list

7.....common-common 提供者端口号：8002

　　application.yml 更改数据库名端口号

 1 server:
 2   port: 8002
 3 mybatis:
 4   config-location: classpath:mybatis/mybatis.cfg.xml #mybatis 配置文件路径
 5   type-aliases-package: com.wsc.core.pojo # entity别名类所在包
 6   mapper-locations: mybatis/mapper/*.xml    # mapper映射文件
 7 spring:
 8   application:
 9     name: microserver-product #这个很重要，这在以后的服务与服务之间相互调用一般都是根据这个name
10   datasource:
11     type: com.alibaba.druid.pool.DruidDataSource
12     driver-class-name: com.mysql.cj.jdbc.Driver
13     url: jdbc:mysql://127.0.0.1:3306/springcloud_db02?serverTimezone=GMT%2B8
14     password: wsc
15     username: root
16     dbcp2:
17       min-idle: 5                         # 数据库连接池的最小维持连接数
18       initial-size: 5                     # 初始化连接数
19       max-total: 5                        # 最大连接数
20       max-wait-millis: 150                                    # 等待连接获取的最大超时时间
21 
22 eureka:
23   client:
24     register-with-eureka: true             #服务注册开关
25     fetch-registry: true                  #服务发现开关
26     service-url:
27       defaultZone: http://eureka6001.com:6001/eureka/, http://eureka6002.com:6002/eureka/    # http://localhost:6001/eureka # 1 显示主机名
28       instance:
29         instanceId: ${spring.application.name}:${server.port}   #  2   指定实例ID 不显示主机名
30         preferipAddress: true

application.xml

　　其他文件均与 6 号一样

8.....consumer 消费者端口号：81 RestTemplate+Ribbon去调用服务者

　　pom.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <project xmlns="http://maven.apache.org/POM/4.0.0"
 3          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 5     <parent>
 6         <artifactId>spring-cloud-parent</artifactId>
 7         <groupId>com.wsc</groupId>
 8         <version>1.0-SNAPSHOT</version>
 9         <relativePath>../springCloud/spring-cloud-parent/pom.xml</relativePath>
10     </parent>
11     <modelVersion>4.0.0</modelVersion>
12 
13     <artifactId>consumer</artifactId>
14 
15 
16     <properties>
17         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
18         <maven.compiler.source>1.8</maven.compiler.source>
19         <maven.compiler.target>1.8</maven.compiler.target>
20     </properties>
21     <dependencies>
22         <dependency>
23             <groupId>com.wsc</groupId>
24             <artifactId>common</artifactId>
25             <version>${project.version}</version>
26         </dependency>
27         <!--springboot web启动器-->
28         <dependency>
29             <groupId>org.springframework.boot</groupId>
30             <artifactId>spring-boot-starter-web</artifactId>
31         </dependency>
32         <dependency>
33             <groupId>org.springframework.cloud</groupId>
34             <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
35         </dependency>
36     </dependencies>
37 </project>

pom.xml

　　resources / application.yml 消费注册者

 1 server:
 2   port: 81
 3 eureka:
 4   client:
 5     register-with-eureka: true             #服务注册开关
 6     fetch-registry: true                  #服务发现开关
 7     service-url:
 8       defaultZone: http://eureka6001.com:6001/eureka/,http://eureka6002.com:6002/eureka/    # http://localhost:6001/eureka # 1 显示主机名
 9 #    decoder-name:
10 #      instance:
11 #        instanceId: ${spring.application.name}:${server.port}   #  2   指定实例ID 不显示主机名
12 #        preferipAddress: true

application.yml

　 ConfigBean 开启负载均衡

 1 package com.wsc.core.config;
 2 
 3 import org.springframework.cloud.client.loadbalancer.LoadBalanced;
 4 import org.springframework.context.annotation.Bean;
 5 import org.springframework.context.annotation.Configuration;
 6 import org.springframework.web.client.RestTemplate;
 7 
 8 /**
 9  * @version 1.0
10  * @ClassName ConfigBean
11  * @Description TODO
12  * @Author WSC
13  * @Date 2019/8/27 14:32
14  * @LoadBalanced 表示这个RestTemplate开启负载均衡  在调用服务者提供的接口时  可以使用服务名称
15  *  * 替代真实的IP 地址
16  **/
17 @Configuration
18 public class ConfigBean {
19     // 向容器中添加RestTemplate 组件   直接该组件调用EREST接口
20     @LoadBalanced
21     @Bean
22     public RestTemplate getRestTemplate(){
23         return new RestTemplate();
24     }
25 }

ConfigBean

　　ConfigBeanController 实现消费地址

 1 package com.wsc.core.controller;
 2 
 3 import com.wsc.core.pojo.Product;
 4 import org.springframework.beans.factory.annotation.Autowired;
 5 import org.springframework.web.bind.annotation.PathVariable;
 6 import org.springframework.web.bind.annotation.RequestBody;
 7 import org.springframework.web.bind.annotation.RequestMapping;
 8 import org.springframework.web.bind.annotation.RestController;
 9 import org.springframework.web.client.RestTemplate;
10 
11 import java.util.List;
12 
13 /**
14  * @version 1.0
15  * @ClassName ConfigBeanController
16  * @Description TODO
17  * @Author WSC
18  * @Date 2019/8/27 14:33
19  **/
20 @RestController
21 public class ConfigBeanController {
22     //provider的访问 端口
23 //    private static final String REST_URL_PREFIX="http://localhost:8001";
24     private static final String REST_URL_PREFIX="http://MICROSERVER-PRODUCT";
25     @Autowired
26     private RestTemplate restTemplate;
27     @RequestMapping("/consumer/get/add")
28     public boolean add(@RequestBody Product product){
29         return restTemplate.postForObject(REST_URL_PREFIX+"/product/get/add",product,boolean.class);
30     }
31 
32     @RequestMapping("/consumer/get/findAll")
33     public List<Product> getAll(){
34        return restTemplate.getForObject(REST_URL_PREFIX+"/product/get/list",List.class);
35     }
36 
37     @RequestMapping("/consumer/product/get/{pid}")
38     public Product getById(@PathVariable("pid") Long pid){
39         return restTemplate.getForObject(REST_URL_PREFIX+"/product/get/"+pid,Product.class);
40     }
41 }

ConfigBeanController

　　Start_800 启动类

 1 package com.wsc.core;
 2 
 3 import org.springframework.boot.SpringApplication;
 4 import org.springframework.boot.autoconfigure.SpringBootApplication;
 5 import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
 6 
 7 /**
 8  * @version 1.0
 9  * @ClassName Start_80
10  * @Description TODO
11  * @Author WSC
12  * @Date 2019/8/27 14:31
13  **/
14 @EnableEurekaClient
15 @SpringBootApplication
16 public class Start_800 {
17     public static void main(String[] args) {
18         SpringApplication.run(Start_800.class,args);
19     }
20 }

Start_800

　　测试网址输入：

http://localhost:81/consumer/product/get/1

9.....comsumer-consumer 消费者端口号：80 通过Fegin去调用服务者，Fegin(遵循面向接口编程)

　　pom.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <project xmlns="http://maven.apache.org/POM/4.0.0"
 3          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 5     <parent>
 6         <artifactId>spring-cloud-parent</artifactId>
 7         <groupId>com.wsc</groupId>
 8         <version>1.0-SNAPSHOT</version>
 9         <relativePath>../springCloud/spring-cloud-parent/pom.xml</relativePath>
10     </parent>
11     <modelVersion>4.0.0</modelVersion>
12 
13     <artifactId>comsumer-consumer</artifactId>
14 
15 
16     <properties>
17         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
18         <maven.compiler.source>1.8</maven.compiler.source>
19         <maven.compiler.target>1.8</maven.compiler.target>
20     </properties>
21     <dependencies>
22         <dependency>
23             <groupId>com.wsc</groupId>
24             <artifactId>common</artifactId>
25             <version>1.0-SNAPSHOT</version>
26         </dependency>
27         <!--springboot web启动器-->
28         <dependency>
29             <groupId>org.springframework.boot</groupId>
30             <artifactId>spring-boot-starter-web</artifactId>
31         </dependency>
32         <!--Ribbon 相关的依赖-->
33         <!--spring-cloud-starter-netflix-eureka-client  会自动添加spring-cloud-starter-netflix-ribbon-->
34         <dependency>
35             <groupId>org.springframework.cloud</groupId>
36             <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
37         </dependency>
38         <!--feign的依赖-->
39         <dependency>
40             <groupId>org.springframework.cloud</groupId>
41             <artifactId>spring-cloud-starter-openfeign</artifactId>
42         </dependency>
43     </dependencies>
44 </project>

pom.xml

　　resources / application.yml 消费注册者

 1 server:
 2   port: 80
 3 eureka:
 4   client:
 5     register-with-eureka: true             #服务注册开关
 6     fetch-registry: true                  #服务发现开关
 7     service-url:
 8       defaultZone: http://eureka6001.com:6001/eureka/,http://eureka6002.com:6002/eureka/    # http://localhost:6001/eureka # 1 显示主机名
 9 #    decoder-name:
10 #      instance:
11 #        instanceId: ${spring.application.name}:${server.port}   #  2   指定实例ID 不显示主机名
12 #        preferipAddress: true

application.yml

　 FeignService service 类（service 的requestMapping地址必须与提供者（8001 ， 8002）的 controller 地址保持一致，否则会报错）

 1 package com.wsc.core.service;
 2 
 3 import com.wsc.core.pojo.Product;
 4 import org.springframework.cloud.openfeign.FeignClient;
 5 import org.springframework.web.bind.annotation.PathVariable;
 6 import org.springframework.web.bind.annotation.RequestMapping;
 7 import org.springframework.web.bind.annotation.RequestMethod;
 8 
 9 import java.util.List;
10 
11 @FeignClient(value = "microserver-product")
12 public interface FeignService {
13     @RequestMapping(value = "/product/get/{id}",method = RequestMethod.GET)
14     Product get(@PathVariable Long id);
15     @RequestMapping(value = "/product/list",method = RequestMethod.GET)
16     List<Product> list();
17     @RequestMapping(value = "/product/add",method = RequestMethod.POST)
18     boolean add(Product product);
19 }

FeignService

　　ConfigBeanController 实现消费地址

 1 package com.wsc.core.controller;
 2 
 3 import com.wsc.core.pojo.Product;
 4 import com.wsc.core.service.FeignService;
 5 import org.springframework.beans.factory.annotation.Autowired;
 6 import org.springframework.web.bind.annotation.PathVariable;
 7 import org.springframework.web.bind.annotation.RequestMapping;
 8 import org.springframework.web.bind.annotation.RestController;
 9 
10 import java.util.List;
11 
12 /**
13  * @version 1.0
14  * @ClassName ConfigBeanController
15  * @Description TODO
16  * @Author WSC
17  * @Date 2019/8/27 14:33
18  **/
19 @RestController
20 public class ConfigBeanController {
21     @Autowired
22     private FeignService feignService;
23     @RequestMapping(value ="/product/add")
24     public boolean add(Product product){
25         return feignService.add(product);
26     }
27 
28     @RequestMapping(value = "/consumer/{id}")
29     public Product get(@PathVariable("id") Long id) {
30         return feignService.get(id);
31     }
32     @RequestMapping(value = "/consumer/product/list")
33     public List<Product> list() {
34         return feignService.list();
35     }
36 }

ConfigBeanController

Start_800_feign 启动类

 1 package com.wsc.core;
 2 
 3 import org.springframework.boot.SpringApplication;
 4 import org.springframework.boot.autoconfigure.SpringBootApplication;
 5 import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
 6 import org.springframework.cloud.openfeign.EnableFeignClients;
 7 
 8 /**
 9  * @version 1.0
10  * @ClassName Start_80
11  * @Description TODO
12  * @Author WSC
13  * @Date 2019/8/27 14:31
14  **/
15 @EnableFeignClients(basePackages ="com.wsc.core")  //feign  通过接口+注解    获得服务的调用
16 @EnableEurekaClient //自动注册eureka
17 @SpringBootApplication
18 public class Start_800_feign {
19     public static void main(String[] args) {
20         SpringApplication.run(Start_800_feign.class,args);
21     }
22 }

Start_800_feign

测试地址：

http://localhost/consumer/1

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原文地址：https://www.cnblogs.com/wangshichang/p/11435567.html

eureka 服务于发现 （集群模式）

eureka 服务于发现（集群模式）