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詳解Spring Cloud(後端通用服務client)三

建立步驟

1、在詳解Spring Cloud(服務注冊發現)二.項目中以spring cloud作為父級工程，spring-client作為子工程，spring-cloud-client-product-1也作為子工程依賴spring-client。不會聚合工程的請看建立工程步驟.

2、建立啟動類Product1Application，該類主要有兩個注解@SpringBootApplication和@EnableDiscoveryClient，@EnableDiscoveryClient主要是啟動client服務。這個注解要與服務注冊發現的@EnableEurekaServer注解區分開來。

3、建立類HelloController用于測試是否成功(文末給源碼)。

4、寫application.yml檔案(文末給源碼)。

5、啟動完三個服務注冊spring-service-1，spring-service-2，spring-service-3後，再啟動spring-cloud-client-product-1工程

6、通路端口 http://localhost:8761發現spring-cloud-client-product-1已經注冊成功

7、通路 http://localhost:8081/hello 能正常顯示"success product-1"表示client服務成功。

至此client服務基本流程完成。

源碼

項目結構圖

詳解Spring Cloud(後端通用服務client)三

1、spring-client的pom.xml檔案

<project xmlns="http://maven.apache.org/POM/4.0.0"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 <modelVersion>4.0.0</modelVersion>
 <parent>
  <groupId>net.seehope</groupId>
  <artifactId>spring-cloud</artifactId>
  <version>${project.version}</version>
 </parent>
 <artifactId>spring-client</artifactId>
 <!-- springboot工程中，大部分的工程的jar包的版本号已經由父工程定義好了 除非明确的知道需要覆寫複工程的配置，不然不要輕易地修改子工程中的版本 -->
 <dependencies>
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-web</artifactId>
  </dependency>
  <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-redis -->
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-data-redis</artifactId>
  </dependency>
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-configuration-processor</artifactId>
   <optional>true</optional>
  </dependency>
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-jta-narayana</artifactId>
  </dependency>
  <!-- 開發工具 -->
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-devtools</artifactId>
  </dependency>
  <!-- https://mvnrepository.com/artifact/org.mybatis.spring.boot/mybatis-spring-boot-starter -->
  <dependency>
   <groupId>org.mybatis.spring.boot</groupId>
   <artifactId>mybatis-spring-boot-starter</artifactId>
   <version>2.1.3</version>
  </dependency>
  <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
  <dependency>
   <groupId>mysql</groupId>
   <artifactId>mysql-connector-java</artifactId>
  </dependency>
  <!-- https://mvnrepository.com/artifact/com.alibaba/druid-spring-boot-starter -->
  <dependency>
   <groupId>com.alibaba</groupId>
   <artifactId>druid-spring-boot-starter</artifactId>
   <version>1.2.3</version>
  </dependency>
  <!-- https://mvnrepository.com/artifact/tk.mybatis/mapper-spring-boot-starter -->
  <dependency>
   <groupId>tk.mybatis</groupId>
   <artifactId>mapper-spring-boot-starter</artifactId>
   <version>2.1.5</version>
  </dependency>
  <!-- https://mvnrepository.com/artifact/com.github.pagehelper/pagehelper-spring-boot-starter -->
  <dependency>
   <groupId>com.github.pagehelper</groupId>
   <artifactId>pagehelper-spring-boot-starter</artifactId>
   <version>1.3.0</version>
  </dependency>
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-test</artifactId>
   <scope>test</scope>
   <exclusions>
    <exclusion>
     <groupId>org.junit.vintage</groupId>
     <artifactId>junit-vintage-engine</artifactId>
    </exclusion>
   </exclusions>
  </dependency>
  <!-- 自動文檔插件 -->
  <!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger2 -->
  <dependency>
   <groupId>io.springfox</groupId>
   <artifactId>springfox-swagger2</artifactId>
   <version>2.9.2</version>
  </dependency>
  <!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger-ui -->
  <dependency>
   <groupId>io.springfox</groupId>
   <artifactId>springfox-swagger-ui</artifactId>
   <version>2.9.2</version>
  </dependency>
  <!-- 工具包 -->
  <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
  <dependency>
   <groupId>org.apache.commons</groupId>
   <artifactId>commons-lang3</artifactId>
  </dependency>
  <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-collections4 -->
  <dependency>
   <groupId>org.apache.commons</groupId>
   <artifactId>commons-collections4</artifactId>
   <version>4.3</version>
  </dependency>
  <!-- https://mvnrepository.com/artifact/commons-beanutils/commons-beanutils -->
  <dependency>
   <groupId>commons-beanutils</groupId>
   <artifactId>commons-beanutils</artifactId>
   <version>1.9.4</version>
  </dependency>
  <!-- 切面依賴 -->
  <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjrt -->
  <dependency>
   <groupId>org.aspectj</groupId>
   <artifactId>aspectjrt</artifactId>
  </dependency>
  <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
  <dependency>
   <groupId>org.aspectj</groupId>
   <artifactId>aspectjweaver</artifactId>
   <scope>runtime</scope>
  </dependency>
  <!-- jackson -->
  <dependency>
   <groupId>com.fasterxml.jackson.core</groupId>
   <artifactId>jackson-annotations</artifactId>
  </dependency>
  <dependency>
   <groupId>com.fasterxml.jackson.core</groupId>
   <artifactId>jackson-databind</artifactId>
  </dependency>
  <dependency>
   <groupId>com.fasterxml.jackson.core</groupId>
   <artifactId>jackson-core</artifactId>
  </dependency>
  <dependency>
   <groupId>com.fasterxml.jackson.datatype</groupId>
   <artifactId>jackson-datatype-jsr310</artifactId>
  </dependency>
  <dependency>
   <groupId>org.springframework.cloud</groupId>
   <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
  </dependency>
 </dependencies>
</project>

2、spring-cloud-client-product-1的pom.xml檔案

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>net.seehope</groupId>
    <artifactId>spring-cloud</artifactId>
    <version>${project.version}</version>
  </parent>
  <artifactId>spring-cloud-client-product-1</artifactId>
  <!-- 依賴spring-client -->
   <dependencies>
   <dependency>
    <groupId>net.seehope</groupId>
    <artifactId>spring-client</artifactId>
    <version>${project.version}</version>
   </dependency>
  </dependencies>
</project>

3、啟動類Product1Application

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

@SpringBootApplication
@EnableDiscoveryClient
public class Product1Application {
 public static void main(String[] args) throws Exception {
  SpringApplication.run(Product1Application.class, args);
 }
}

4、HelloController類

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/hello")
public class HelloController {
 @GetMapping
 public String hello() {
  return "success product-1";
 }
}

2、

spring cloud 微服務架構
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