springcloud搭建gateway

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柳随风 2024-10-30 12:56:48

文章标签 spring cloud 微服务 spring boot spring Cloud 文章分类 架构后端开发

Spring Cloud全文目录

源码

什么是微服务？有手就行

SpringCloud简介与5大常用组件

一、手把手教你搭建SpringCloud项目（一）搭建Maven父工程，傻瓜式操作

二、手把手教你搭建SpringCloud项目（二）生产者与消费者

三、手把手教你搭建SpringCloud项目（三）集成Eureka服务注册中心

四、手把手教你搭建SpringCloud项目（四）EurekaServer集群版搭建

五、手把手教你搭建SpringCloud项目（五）生产者集群版搭建

六、手把手教你搭建SpringCloud项目（六）actuator微服务信息完善与Eureka自我保护机制

七、手把手教你搭建SpringCloud项目（七）Eureka实现服务发现(Discovery)

八、手把手教你搭建SpringCloud项目（八）集成Consul服务注册中心

九、手把手教你搭建SpringCloud项目（九）集成Ribbon负载均衡器

十、手把手教你搭建SpringCloud项目（十）集成OpenFeign服务接口调用

十一、手把手教你搭建SpringCloud项目（十一）集成Hystrix之服务降级

十二、手把手教你搭建SpringCloud项目（十二）集成Hystrix之服务熔断

十三、手把手教你搭建SpringCloud项目（十三）集成Hystrix之图形化Dashboard实时监控

十四、手把手教你搭建SpringCloud项目（十四）集成Gateway新一代服务网关

十五、手把手教你搭建SpringCloud项目（十五）集成Config分布式配置中心

十六、手把手教你搭建SpringCloud项目（十六）集成Bus消息总线

十七、手把手教你搭建SpringCloud项目（十七）集成Stream消息驱动

十八、手把手教你搭建SpringCloud项目（十八）集成Sleuth分布式链路跟踪

我们继续上一篇的文章，上一篇文章将Maven父工程微服务搭建完成了，这篇文章我们将继续搭建，搭建生产者和消费者，生产者我们可以这样理解就是我们的服务端，就是我们使用代码写的业务逻辑接口，而消费者就是我们用户，用户通过app或者web调用我们服务端的接口，获取信息。那我们下面就直接搭建，从项目中进行了解学习。

搭建生产者微服务模块

步骤：

建module
改pom
写yml
主启动
业务类

1.建立生产者支付module: springcloud-provider-payment8001

项目结构：

springcloud搭建gateway_spring boot

2.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>springcloud</artifactId>
        <groupId>com.dyh.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>springcloud-provider-payment8001</artifactId>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.10</version>
        </dependency>
        <!--mysql-connector-java-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </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>
    </dependencies>

</project>

3.application.yml

server:
  port: 8001

spring:
  application:
    name: springcloud-payment-service
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource      #当前数据源操作类型
    driver-class-name: org.gjt.mm.mysql.Driver        #mysql驱动包
    url: jdbc:mysql://localhost:3306/db2021?useUnicode=true&characterEncoding-utr-8&useSSL=false
    username: root
    password: 123456

mybatis:
  mapper-locations: classpath:mapper/*.xml
  type-aliases-package: com.dyh.springcloud.entities       #所有Entity别名类所在包

4.主启动类 PaymentMain8001

package com.dyh.springcloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class PaymentMain8001 {

    public static void main(String[] args) {
        SpringApplication.run(PaymentMain8001.class,args);
    }

}

5. 业务类

建库

CREATE TABLE `payment`(
	`id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'ID',
	`serial` varchar(200) DEFAULT '',
	PRIMARY KEY (`id`)
)ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8

springcloud搭建gateway_spring_02

Payment

package com.dyh.springcloud.entities;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Payment implements Serializable {
    private Long id;
    private String serial;

}

CommentResult

//Json封装体CommentResult,传给前端，判断编码是否成功，成功才显示
package com.dyh.springcloud.entities;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class CommonResult<T> {  //泛型：如果装的payment 返回payment,装的order 返回order

    private Integer code;
    private String message;
    private T data;

    public CommonResult(Integer code,String message){
        this(code,message,null);
    }
}

PaymentDao

package com.dyh.springcloud.dao;

import com.dyh.springcloud.entities.Payment;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

@Mapper
public interface PaymentDao {
    int create(Payment payment);

    Payment getPaymentById(@Param("id") Long id);
}

mapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.dyh.springcloud.dao.PaymentDao">
    <insert id="create" parameterType="com.dyh.springcloud.entities.Payment" useGeneratedKeys="true" keyProperty="id">
        insert into payment(serial) values(#{serial})
    </insert>

    <resultMap id="BaseResultMap" type="com.dyh.springcloud.entities.Payment">
        <id column="id" property="id" jdbcType="BIGINT"/>
        <result column="serial" property="serial" jdbcType="VARCHAR"/>
    </resultMap>
    <select id="getPaymentById" parameterType="Long" resultMap="BaseResultMap">
        select * from payment where id=#{id};
    </select>
</mapper>

PaymentService

package com.dyh.springcloud.service;

import com.dyh.springcloud.entities.Payment;
import org.apache.ibatis.annotations.Param;

public interface PaymentService {
    public int create(Payment payment);

    public Payment getPaymentById(@Param("id") Long id);

}

PaymentServiceImpl

package com.dyh.springcloud.service;

import com.dyh.springcloud.dao.PaymentDao;
import com.dyh.springcloud.entities.Payment;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class PaymentServiceImpl implements  PaymentService{

    @Autowired
    private PaymentDao paymentDao;

    @Override
    public int create(Payment payment){
        return paymentDao.create(payment);
    }
    @Override
    public Payment getPaymentById(Long id){
        return paymentDao.getPaymentById(id);
    }
}

PaymentController

package com.dyh.springcloud.controller;


import com.dyh.springcloud.entities.CommonResult;
import com.dyh.springcloud.entities.Payment;
import com.dyh.springcloud.service.PaymentService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;


@RestController
@Slf4j
public class PaymentController {
    @Autowired
    private PaymentService paymentService;

    //只传给前端CommonResult，不需要前端了解其他的组件
    @PostMapping(value = "/payment/create")
    public CommonResult create(@RequestBody Payment payment){
        int result = paymentService.create(payment);
        log.info("*****插入结果："+result);
        if(result > 0){
            return new CommonResult(200,"插入数据成功",result);
        }else{
            return new CommonResult(444,"插入数据失败",null);
        }
    }
    @GetMapping(value = "/payment/get/{id}")
    public CommonResult getPaymentById(@PathVariable("id") Long id){
        Payment payment = paymentService.getPaymentById(id);
        log.info("*****插入结果："+payment);
        if(payment != null){
            return new CommonResult(200,"查询成功",payment);
        }else{
            return new CommonResult(444,"没有对应记录,查询ID："+id,null);
        }
    }
}

6.启动8001服务，测试

Chrom浏览器可能不支持Post请求，可以使用PostMan工具测试

springcloud搭建gateway_微服务_03

springcloud搭建gateway_Cloud_04

搭建消费者微服务模块

步骤：

建module
改pom
写yml
主启动
业务类

1.建立消费者订单module: springcloud-consumer-order81

springcloud搭建gateway_Cloud_05

2.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>springcloud</artifactId>
        <groupId>com.dyh.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>springcloud-consumer-order81</artifactId>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </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>
    </dependencies>


</project>

3.application.yml

server:
  port: 81
spring:
  application:
    name: springcloud-order-server

4.主启动类 OrderMain81

package com.dyh.springcloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class OrderMain81 {
    public static void main(String[] args) {
        SpringApplication.run(OrderMain81.class,args);
    }
}

5.业务类

订单也需要Payment、CommonResult实体类，但是不需要操作数据库，没有Service、Dao，只需添加Controller即可。

Payment

package com.dyh.springcloud.entities;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Payment implements Serializable {
    private Long id;
    private String serial;

}

CommentResult

//Json封装体CommentResult,传给前端，判断编码是否成功，成功才显示
package com.dyh.springcloud.entities;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class CommonResult<T> {  //泛型：如果装的payment 返回payment,装的order 返回order

    private Integer code;
    private String message;
    private T data;

    public CommonResult(Integer code,String message){
        this(code,message,null);
    }
}

RestTemplate

RestTemplate： RestTemplate提供了多种便捷访问远程Http服务的方法，是一种简单便捷的访问restful服务模板类，是Spring提供的用于访问Rest服务的客户端模板工具集，实现81到8001的远程调用。
官网地址：
https://docs.spring.io/spring-framework/docs/5.2.2.RELEASE/javadoc-api/org/springframework/web/client/RestTemplate.html

使用：
使用restTemplate访问restful接口非常的简单粗暴，（url、requestMap、ResponseBean.class）这三个参数分别代表REST请求地址、请求参数、HTTP响应转换被转换成的对象类型。

将RestTemplate对象注册到容器中

package com.dyh.springcloud.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;

@Configuration
public class ApplicationContextConfig {

    @Bean
    public RestTemplate getRestTemplate(){
        return new RestTemplate();
    }

}

OrderController

package com.dyh.springcloud.controller;

import com.dyh.springcloud.entities.CommonResult;
import com.dyh.springcloud.entities.Payment;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
@Slf4j
public class OrderController {

    private static final String PAYMENT_URL="http://localhost:8001";
    @Autowired
    private RestTemplate restTemplate;

    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment> create(Payment payment){
        return restTemplate.postForObject(PAYMENT_URL+"/payment/create",payment, CommonResult.class);
    }

    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPayment(@PathVariable("id") Long id){
        return restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id,CommonResult.class);
    }
}

6.启动81、8001服务，测试

80服务调用8001服务，实现效果如下：

查询：

springcloud搭建gateway_spring_06

添加：

springcloud搭建gateway_Cloud_07

工程重构

项目中存在相同的代码（entities包下的Payment.class和CommonResult.class）,造成代码冗余，可以进行重构。
通过Maven聚合父工程，把相同重复的代码移到公开公用的工程里面，还可以放第三方接口、工具类，统一调配使用。

建立公共module

springcloud搭建gateway_spring cloud_08

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>springcloud</artifactId>
        <groupId>com.dyh.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>springcloud-api-commons</artifactId>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>5.1.0</version>
        </dependency>
    </dependencies>
</project>

将entities包复制到cloud-api-commons

springcloud搭建gateway_spring boot_09

删除重复entities，引入maven install的jar包坐标即可使用。

<!--引入自己定义的api通用包，可以使用Payment支付Entity-->
<dependency>
    <groupId>com.dyh.springcloud</groupId>
    <artifactId>springcloud-api-commons</artifactId>
    <version>1.0-SNAPSHOT</version>
</dependency>

使用Maven打包发布上传到公用本地库里

打开Maven窗口，执行clean测试一下，无误后出现BUILD SUCCESS，然后执行install

springcloud搭建gateway_微服务_10

到这里我们springcloud的简单的搭建就成功啦。是不是so easy！

本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。

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