springcloud使用Eureka和Feign消費
阿新 • • 發佈：2018-12-17
前言
網上的案例大部分都是hi~hi name什麼的，博主實在是感覺太無聊了，畢竟最終我們都是得為底層資料庫服務的。於是花了一上午時間寫了個springcloud+mysql+mybatis-plus整合的簡單例子（mybatis-plus純屬裝逼的，同學們也可以使用mybatis）。
目錄結構
- eureka-base被我當做是註冊中心裡面什麼都沒有，只是當做註冊倉庫一樣，其他服務都註冊在這裡面。埠是8080
- eureka-server服務提供層，整合mybatis-plus，埠8081，服務名eureka-server-1
- eureka-client服務消費層，埠8082，服務名eureka-client-2
- feign-client服務消費層。服務名：feign-consumer
eureka-base配置
- pom.xml
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository --> - application.yml
server:
port: 8080
eureka:
instance:
hostname: localhost
client:
registerWithEureka: false
fetchRegistry: false
serviceUrl:
defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
- 只有一個啟動類EurekaBaseApplication.java
@SpringBootApplication
@EnableEurekaServer
public class EurekaBaseApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaBaseApplication.class, args);
}
}
eureka-server配置
- pom.xml
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<spring-cloud.version>Finchley.SR1</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/com.baomidou/mybatis-plus-boot-starter -->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.0-RC2</version>
</dependency>
<!-- 模板引擎 -->
<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity-engine-core</artifactId>
<version>2.0</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- springboot整合mybatis（核心就這一個） -->
<!-- 注意順序，這個一定要放在最下面 -->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>
</dependencies>
<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>
- application.yml
server:
port: 8081
# 8081註冊到8080埠服務
eureka:
instance:
hostname: localhost
client:
serviceUrl:
defaultZone: http://localhost:8080/eureka/
spring:
application:
name: eureka-server-1
datasource:
hikari:
username: root
password: root
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost:3306/boot?useUnicode=true&characterEncoding=utf8;allowMultiQueries=true&&useSSL=true
mybatis-plus:
# 如果是放在src/main/java目錄下 classpath:/com/yourpackage/*/mapper/*Mapper.xml
# 如果是放在resource目錄 classpath:/mapper/*Mapper.xml
mapper-locations: classpath:/com/cloud/eureka/mapper/*Mapper.xml
#實體掃描，多個package用逗號或者分號分隔
typeAliasesPackage: com.cloud.eureka.entity
global-config:
#mp2.3+ 全域性表字首 mp_
#table-prefix: mp_
#重新整理mapper 除錯神器
#refresh-mapper: true
#資料庫大寫下劃線轉換
#capital-mode: true
#邏輯刪除配置（下面3個配置）
db-config:
logic-delete-value: 1
logic-not-delete-value: 0
#駝峰下劃線轉換
column-underline: true
#欄位策略 0:"忽略判斷",1:"非 NULL 判斷"),2:"非空判斷"
field-strategy: not_empty
#主鍵型別 0:"資料庫ID自增", 1:"使用者輸入ID",2:"全域性唯一ID (數字型別唯一ID)", 3:"全域性唯一ID UUID";
id-type: id_worker
configuration:
#配置返回資料庫(column下劃線命名&&返回java實體是駝峰命名)，自動匹配無需as（沒開啟這個，SQL需要寫as： select user_id as userId）
map-underscore-to-camel-case: true
cache-enabled: false
#配置JdbcTypeForNull, oracle資料庫必須配置
jdbc-type-for-null: 'null'
log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
- 啟動類
@SpringBootApplication
@EnableEurekaClient
public class EurekaServerApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaServerApplication.class, args);
}
}