spring cloud （一、服务注册demo_eureka）
spring cloud （二、服务注册安全demo_eureka）
spring cloud （三、服务提供者demo_provider）
写完这些案例的demo后面有时间再写这个框架的思想；
注册中心负责服务管理；提供者负责提供服务；消费者调用提供者的服务；
消费者的demo也是一样建一个spring boot 项目；然后修改pom文件如下：
<?xml version="1.0" encoding="UTF-8"?>
<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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion> <groupId>com.example</groupId>
<artifactId>consumer</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging> <name>consumer</name>
<description>Demo project for Spring Boot</description> <parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.3.RELEASE</version>
<relativePath />
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-feign</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Dalston.SR3</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
</project>
配置信息
#应用(服务)名称
spring.application.name=eureka-consumer
server.port=8771
eureka.client.serviceUrl.defaultZone=http://admin:admin@localhost:3333/eureka/
启动类
/**
* 消费者
*/
@EnableFeignClients
@EnableDiscoveryClient
@SpringBootApplication
public class ConsumerApplication { public static void main(String[] args) {
SpringApplication.run(ConsumerApplication.class, args);
}
}
到这里为止；服务注册、提供者、消费者三个demo已经可以正常启动了；并且在服务注册控制台也可以看到对应的服务信息；
接下来我们在提供者的demo中写一个服务；返回一个字符串
创建controller和service
接口
public interface TestService {
String test01();
}
实现类
@Service
public class TestServiceImp implements TestService {
@Override
public String test01() {
System.out.println(3);
return "Hello World";
}
}
controller
@Controller
public class TestController { @Autowired
private TestService testService; @RequestMapping("/test")
@ResponseBody
public String home() {
System.out.println(2);
return testService.test01();
}
}
接下来在消费者demo中写调用的代码
创建controller和service
接口
/**
* //指定访问的服务名称
*/
@Service
@FeignClient(name= "eureka-provider")
public interface TestService {
/**
* 指定请求的url
* @return
*/
@RequestMapping(value = "/test")
String hello();
}
以上服务名称和url都必须要和提供者那边的对应
controller
@Controller
public class TestController {
@Autowired
private TestService testService; @RequestMapping("/test01")
@ResponseBody
public String index() {
System.out.println(1);
return testService.hello();
} }
此时的代码已经写完了，我们通过访问http://localhost:8771/test01可以看到提供者那边返回的字符串
