代码地址:
https://download.csdn.net/download/qq_16855077/11460088
聚合项目结构
parent 父项目 存放共同的依赖 pom
--api_service 只有接口,没有实现 pom
-----api_member_service jar
-----api_order_service jar
--member_service_impl 他是api接口的实现 jar
--order_service_impl 他是api接口的实现 jar
实体类相关信息因定义一个公有的项目common,这里为了方便,就不拆分勒。
1.创建项目结构
1.1 创建父项目
注意选择jdk,jdk版本至少1.8
1.2 创建api_service
点击父模块的名称
1.3 api_member_service项目
右击api_service项目
1.4 api_order_service项目
右击api_service项目
1.5 member_service_impl项目
右击parent项目
1.6 order_server_impl项目
右击parent项目
2.应用
2.1 parent项目
2.1.1 pom.xml
<?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>org.fqyd</groupId>
<artifactId>parent</artifactId>
<version>1.0-SNAPSHOT</version>
<modules>
<module>member_service_impl</module>
<module>order_service_impl</module>
<module>eureka_server</module>
</modules>
<packaging>pom</packaging>
<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.RELEASE</spring-cloud.version>
</properties>
<dependencies>
<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>
<!--feign依赖 配置-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
<!--整合eureka-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
</dependencies>
<!-- Spring Cloud 管理依赖 -->
<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>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
2.2 eureka_server服务器注册项目
https://blog.csdn.net/qq_16855077/article/details/90752257
2.3 api_service项目
2.3.1 pom.xml
<?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">
<parent>
<artifactId>parent</artifactId>
<groupId>org.fqyd</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>api_service</artifactId>
<packaging>pom</packaging>
<modules>
<module>api_member_service</module>
<module>api_order_service</module>
</modules>
</project>
2.3.2 api_member_service项目
<?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">
<parent>
<artifactId>api_service</artifactId>
<groupId>org.fqyd</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>api_member_service</artifactId>
<packaging>pom</packaging>
</project>
实体类:
package com.fqyd.api.entity;
import lombok.Data;
/**
* Description:
* Author: wude
* Date: 2019/7/25 15:31
* Modified By:
*/
@Data
public class User {
private String name;
private Integer age;
}
接口类:
package com.fqyd.api.service;
import com.fqyd.api.entity.User;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
/**
* Description:
* Author: wude
* Date: 2019/7/25 14:58
* Modified By:
*/
@FeignClient("fqyd-member")
public interface IMemberService {
/**
* 获取会员信息
* @param name
* @return
*/
@RequestMapping("getMember")
public User getMember(@RequestParam("name") String name);
}
需要增加@RequestParam("name") ,不然,通过FeignClient调用,获取到name是null,本人也搞不懂为什么?
2.3.3 api_order_service项目
<?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">
<parent>
<artifactId>api_service</artifactId>
<groupId>org.fqyd</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>api_order_service</artifactId>
<packaging>jar</packaging>
</project>
package com.fqyd.api.service;
import org.springframework.web.bind.annotation.RequestMapping;
/**
* Description:
* Author: wude
* Date: 2019/7/25 17:34
* Modified By:
*/
public interface IOrderService {
@RequestMapping("getOrder")
public String orderToMember(String name);
}
2.4 member_service_impl项目
<?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">
<parent>
<artifactId>parent</artifactId>
<groupId>org.fqyd</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>member_service_impl</artifactId>
<packaging>jar</packaging>
<dependencies>
<dependency>
<groupId>org.fqyd</groupId>
<artifactId>api_member_service</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
</dependencies>
</project>
####服务器端口号
server:
port: 8000
###服务别名---服务器注册到注册中心的名称
spring:
application:
name: fqyd-member
eureka:
client:
###需要将我的服务注册到eureka上
registerWithEureka: true
###检索服务
fetchRegistry: true
###当前服务注册到eureka服务地址
serviceUrl:
defaultZone: http://localhost:8100/eureka/
package com.fqyd.api.service.impl;
import com.fqyd.api.entity.User;
import com.fqyd.api.service.IMemberService;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
/**
* Description:
* Author: wude
* Date: 2019/7/25 15:36
* Modified By:
*/
@RestController
public class MemberServiceImpl implements IMemberService {
@RequestMapping("getMember")
@Override
public User getMember(@RequestParam("name") String name) {
User user = new User();
user.setName(name);
user.setAge(18);
return user;
}
}
package com.fqyd;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.openfeign.EnableFeignClients;
/**
* Description:
* Author: wude
* Date: 2019/7/25 16:49
* Modified By:
*/
@SpringBootApplication
@EnableEurekaClient
@EnableFeignClients
public class MemberServiceImplApplication {
public static void main(String[] args) {
SpringApplication.run(MemberServiceImplApplication.class,args);
}
}
2.5 order_service_impl
<?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">
<parent>
<artifactId>parent</artifactId>
<groupId>org.fqyd</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>order_service_impl</artifactId>
<dependencies>
<dependency>
<groupId>org.fqyd</groupId>
<artifactId>api_order_service</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.fqyd</groupId>
<artifactId>api_member_service</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
</dependencies>
</project>
####服务器端口号
server:
port: 8020
###服务别名---服务器注册到注册中心的名称
spring:
application:
name: fqyd-order
eureka:
client:
###需要将我的服务注册到eureka上
registerWithEureka: true
###检索服务
fetchRegistry: true
###当前服务注册到eureka服务地址
serviceUrl:
defaultZone: http://localhost:8100/eureka/
package com.fqyd.api.feign;
import com.fqyd.api.entity.User;
import com.fqyd.api.service.IMemberService;
import org.springframework.cloud.openfeign.FeignClient;
/**
* Description:
* Author: wude
* Date: 2019/8/1 10:35
* Modified By:
*/
@FeignClient("fqyd-member")
public interface MemberServiceFeign extends IMemberService {
}
这里使用继承的好处:减少接口重复代码
package com.fqyd.api.service.impl;
import com.fqyd.api.entity.User;
import com.fqyd.api.feign.MemberServiceFeign;
import com.fqyd.api.service.IOrderService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
/**
* Description:
* Author: wude
* Date: 2019/7/25 17:39
* Modified By:
*/
@RestController
public class OrderServiceImpl implements IOrderService {
@Autowired
private MemberServiceFeign memberServiceFeign;
@RequestMapping("getOrder")
@Override
public String orderToMember(String name) {
User user = memberServiceFeign.getMember(name);
if(user == null){
return "没有找到信息";
}
return user.toString();
}
}
package com.fqyd;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.openfeign.EnableFeignClients;
/**
* Description:
* Author: wude
* Date: 2019/7/25 16:49
* Modified By:
*/
@SpringBootApplication
@EnableEurekaClient
@EnableFeignClients
public class OrderServiceImplApplication {
public static void main(String[] args) {
SpringApplication.run(OrderServiceImplApplication.class,args);
}
}
3.测试
http://localhost:8020/getOrder?name=测试1678
注意:member接口和member实现,传递name参数时,一定要增加@RequestParam("name") 才能接收到值,具体为什么要加,我也没有搞明白。。。。