微服务架构工程搭建

- 日理万妓 2022-12-29 04:40 224阅读 0赞

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### 微服务架构工程搭建 ###

*  1-IDEA 新建 Project 工作空间
 *  2-Rest 微服务工程搭建
 *   *  2.1-提供者服务 cloud-provider-payment8001
     *  2.2-热部署 Devtools
     *  2.3-消费者服务 cloud-consumer-order80
     *  2.4-微服务工程重构

--------------------

# 1-IDEA 新建 Project 工作空间 #

**约定 > 配置 > 编码**

**a、新建父工程 mscloud**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3loajE5OTIwNDE3_size_16_color_FFFFFF_t_70]

<groupId>com.atguigu.springcloud</groupId>
    <artifactId>mscloud</artifactId>
    <version>1.0-SNAPSHOT</version>

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3loajE5OTIwNDE3_size_16_color_FFFFFF_t_70 1]

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待删除的截图  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3loajE5OTIwNDE3_size_16_color_FFFFFF_t_70 2]

<groupId>com.atguigu.springcloud</groupId>
    <artifactId>mscloud</artifactId>
    <version>1.0-SNAPSHOT</version>

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3loajE5OTIwNDE3_size_16_color_FFFFFF_t_70 3]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3loajE5OTIwNDE3_size_16_color_FFFFFF_t_70 4]  
**b、删除父工程 mscloud 中无用的 src 文件夹**  
![在这里插入图片描述][2021011119484467.png]  
**c、修改 IDEA 字符编码，file -> Settings**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3loajE5OTIwNDE3_size_16_color_FFFFFF_t_70 5]  
**d、修改 IDEA File Type 过滤，file -> Settings**

*.hprof;*.idea;*.iml;*.pyc;*.pyo;*.rbc;*.yarb;*~;.DS_Store;.git;.hg;.svn;CVS;__pycache__;_svn;vssver.scc;vssver2.scc

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3loajE5OTIwNDE3_size_16_color_FFFFFF_t_70 6]  
**e、修改 IDEA 注解生效激活，file -> Settings**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3loajE5OTIwNDE3_size_16_color_FFFFFF_t_70 7]  
**f、修改 IDEA Java 编译版本，file -> Settings**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3loajE5OTIwNDE3_size_16_color_FFFFFF_t_70 8]  
**g、修改父工程 mscloud 中 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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
    
        <groupId>com.atguigu.springcloud</groupId>
        <artifactId>cloud2020</artifactId>
        <version>1.0-SNAPSHOT</version>
        <packaging>pom</packaging>
    
        
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <maven.compiler.source>1.8</maven.compiler.source>
            <maven.compiler.target>1.8</maven.compiler.target>
            <junit.version>4.12</junit.version>
            <log4j.version>1.2.17</log4j.version>
            <lombok.version>1.18.14</lombok.version>
            <mysql.version>5.1.47</mysql.version>
            <druid.version>1.1.16</druid.version>
            <mybatis.spring.boot.version>1.3.0</mybatis.spring.boot.version>
        </properties>
    
        
        <dependencyManagement>
            <dependencies>
                
                <dependency>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-dependencies</artifactId>
                    <version>2.2.2.RELEASE</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
                
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>Hoxton.SR1</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
                
                <dependency>
                    <groupId>com.alibaba.cloud</groupId>
                    <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                    <version>2.1.0.RELEASE</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
                <dependency>
                    <groupId>mysql</groupId>
                    <artifactId>mysql-connector-java</artifactId>
                    <version>${mysql.version}</version>
                </dependency>
                <dependency>
                    <groupId>com.alibaba</groupId>
                    <artifactId>druid</artifactId>
                    <version>${druid.version}</version>
                </dependency>
                <dependency>
                    <groupId>org.mybatis.spring.boot</groupId>
                    <artifactId>mybatis-spring-boot-starter</artifactId>
                    <version>${mybatis.spring.boot.version}</version>
                </dependency>
                <dependency>
                    <groupId>junit</groupId>
                    <artifactId>junit</artifactId>
                    <version>${junit.version}</version>
                </dependency>
                <dependency>
                    <groupId>log4j</groupId>
                    <artifactId>log4j</artifactId>
                    <version>${log4j.version}</version>
                </dependency>
                <dependency>
                    <groupId>org.projectlombok</groupId>
                    <artifactId>lombok</artifactId>
                    <version>${lombok.version}</version>
                    <optional>true</optional>
                </dependency>
            </dependencies>
        </dependencyManagement>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                    <configuration>
                        <fork>true</fork>
                        <addResources>true</addResources>
                    </configuration>
                </plugin>
            </plugins>
        </build>
    </project>

**h、父工程 mscloud，执行 Maven 命令 mvn clean install**  
![在这里插入图片描述][20201229164708567.png]

--------------------

# 2-Rest 微服务工程搭建 #

**小总结**：

*  建 module
 *  改 pom
 *  写 yml
 *  主启动类
 *  业务类

## 2.1-提供者服务 cloud-provider-payment8001 ##

**a、右击父工程 mscloud，新建子模块 cloud-provider-payment8001**  
![在这里插入图片描述][20210111195237799.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3loajE5OTIwNDE3_size_16_color_FFFFFF_t_70 9]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3loajE5OTIwNDE3_size_16_color_FFFFFF_t_70 10]  
**b、查看父工程 mscloud 中 pom.xml 变化**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3loajE5OTIwNDE3_size_16_color_FFFFFF_t_70 11]  
**c、修改子模块 cloud-provider-payment8001 中 pom.xml**

**d、修改子模块 cloud-provider-payment8001，目录 /src/main/resources 中新建 application.yml**

server:
      port: 8001
    
    spring:
      application:
        name: cloud-payment-service
      datasource:
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: org.gjt.mm.mysql.Driver
        url: jdbc:mysql://localhost:3306/db2019?useUnicode=true&characterEncoding=utf-8&useSSL=false
        username: root
        password: 123456
    
    mybatis:
      mapperLocations: classpath:mapper/*.xml
      type-aliases-package: com.atguigu.springcloud.entities

**e、修改子模块 cloud-provider-payment8001，目录 /src/main/java 中新建包 com.atguigu.springcloud**

**f、修改子模块 cloud-provider-payment8001，包 com.atguigu.springcloud 中新建启动类 PaymentMain8001.java**

package com.atguigu.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);
        }
    }

**g、新建 jdbc:mysql://localhost:3306/db2019 数据库**

子模块 cloud-provider-payment8001 连接 jdbc:mysql://localhost:3306/db2019 数据库。

DROP DATABASE IF EXISTS db2019;
    CREATE DATABASE db2019 CHARACTER SET UTF8;
    
    USE db2019;
    
    CREATE TABLE payment (
    	id BIGINT (20) NOT NULL,
    	serial VARCHAR (20) DEFAULT NULL,
    	PRIMARY KEY (`id`)
    ) ENGINE = INNODB DEFAULT CHARSET = utf8;
    
    INSERT INTO payment (id, serial) VALUES ('31', '尚硅谷001');

**h、修改子模块 cloud-provider-payment8001，目录 /src/main/java 中新建包 com.atguigu.springcloud.entities**

**i、修改子模块 cloud-provider-payment8001，包 com.atguigu.springcloud.entities 中新建实体类 Payment.java**

package com.atguigu.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;
    }

**j、修改子模块 cloud-provider-payment8001，包 com.atguigu.springcloud.entities 中新建封装类 CommonResult.java**

package com.atguigu.springcloud.entities;
    
    import lombok.AllArgsConstructor;
    import lombok.Data;
    import lombok.NoArgsConstructor;
    
    @Data
    @AllArgsConstructor
    @NoArgsConstructor
    public class CommonResult<T> {
        private Integer code;
        private String message;
        private T data;
    
        public CommonResult(Integer code, String message) {
            this(code, message, null);
        }
    }

**k、修改子模块 cloud-provider-payment8001，目录 /src/main/java 中新建包 com.atguigu.springcloud.dao**

**l、修改子模块 cloud-provider-payment8001，包 com.atguigu.springcloud.dao 中新建接口 PaymentDao.java**

package com.atguigu.springcloud.dao;
    
    import com.atguigu.springcloud.entities.Payment;
    import org.apache.ibatis.annotations.Mapper;
    import org.apache.ibatis.annotations.Param;
    
    @Mapper
    public interface PaymentDao {
        public int create(Payment payment);
    
        public Payment getPaymentById(@Param("id") Long id);
    }

**m、修改子模块 cloud-provider-payment8001，目录 /src/main/resources 中新建目录 mapper**

**n、修改子模块 cloud-provider-payment8001，目录 /src/main/resources/mapper 中新建 PaymentMapper.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.atguigu.springcloud.dao.PaymentDao">
        <insert id="create" parameterType="Payment" useGeneratedKeys="true" keyProperty="id">
            insert into payment(serial) values (${serial});
        </insert>
    
        <resultMap id="BaseResultMap" type="com.atguigu.springcloud.entities.Payment">
            <id column="id" property="id" jdbcType="BIGINT"></id>
            <id column="serial" property="serial" jdbcType="VARCHAR"></id>
        </resultMap>
        <select id="getPaymentById" parameterType="Long" resultMap="BaseResultMap">
            select * from payment where id = #{id}
        </select>
    </mapper>

**o、修改子模块 cloud-provider-payment8001，目录 /src/main/java 中新建包 com.atguigu.springcloud.service**

**p、修改子模块 cloud-provider-payment8001，包 com.atguigu.springcloud.service 中新建接口 PaymentService.java**

package com.atguigu.springcloud.service;
    
    import com.atguigu.springcloud.entities.Payment;
    import org.apache.ibatis.annotations.Param;
    
    public interface PaymentService {
    
        public int create(Payment payment);// 写
    
        public Payment getPaymentById(@Param("id") Long id);// 读
    }

**q、修改子模块 cloud-provider-payment8001，目录 /src/main/java 中新建包 com.atguigu.springcloud.service.impl**

**r、修改子模块 cloud-provider-payment8001，包 com.atguigu.springcloud.service.impl 中新建接口实现类 PaymentServiceImpl.java**

package com.atguigu.springcloud.service.impl;
    
    import com.atguigu.springcloud.dao.PaymentDao;
    import com.atguigu.springcloud.entities.Payment;
    import com.atguigu.springcloud.service.PaymentService;
    import org.springframework.stereotype.Service;
    
    import javax.annotation.Resource;
    
    @Service
    public class PaymentServiceImpl implements PaymentService {
        @Resource
        private PaymentDao paymentDao;
    
        public int create(Payment payment) {
            return paymentDao.create(payment);
        }
    
        public Payment getPaymentById(Long id) {
            return paymentDao.getPaymentById(id);
        }
    }

**s、修改子模块 cloud-provider-payment8001，目录 /src/main/java 中新建包 com.atguigu.springcloud.controller**

**t、修改子模块 cloud-provider-payment8001，包 com.atguigu.springcloud.controller 中新建 PaymentController.java**

package com.atguigu.springcloud.controller;
    
    import com.atguigu.springcloud.entities.CommonResult;
    import com.atguigu.springcloud.entities.Payment;
    import com.atguigu.springcloud.service.PaymentService;
    import lombok.extern.slf4j.Slf4j;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.PathVariable;
    import org.springframework.web.bind.annotation.PostMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    import javax.annotation.Resource;
    
    @RestController
    @Slf4j
    public class PaymentController {
        @Resource
        private PaymentService paymentService;
    
        @PostMapping(value = "/payment/create")
        public CommonResult create(Payment payment) {
            int result = paymentService.create(payment);
            log.info("*****插入结果：" + result);
            if (result > 0) {  //成功
                return new CommonResult(200, "插入数据库成功", result);
            } else {
                return new CommonResult(444, "插入数据库失败", null);
            }
        }
    
        @GetMapping(value = "/payment/get/{id}")
        public CommonResult getPaymentById(@PathVariable("id") Long id) {
            Payment payment = paymentService.getPaymentById(id);
            log.info("*****查询结果：" + payment);
            if (payment != null) {  //说明有数据，能查询成功
                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);
            }
        }
    }

**u、测试子模块 cloud-provider-payment8001**

*  启动子模块 cloud-provider-payment8001
 *  [http://localhost:8001/payment/get/31][http_localhost_8001_payment_get_31]  
    ![在这里插入图片描述][20210104201117501.png]

## 2.2-热部署 Devtools ##

**a、修改子模块 cloud-provider-payment8001 中 pom.xml**  
![在这里插入图片描述][20210104201402619.png]

**b、修改父工程 mscloud 中 pom.xml**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3loajE5OTIwNDE3_size_16_color_FFFFFF_t_70 12]

<?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.atguigu.springcloud</groupId>
        <artifactId>cloud2020</artifactId>
        <version>1.0-SNAPSHOT</version>
        <modules>
            <module>cloud-provider-payment8001</module>
        </modules>
        <packaging>pom</packaging>
    
        
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <maven.compiler.source>1.8</maven.compiler.source>
            <maven.compiler.target>1.8</maven.compiler.target>
            <junit.version>4.12</junit.version>
            <log4j.version>1.2.17</log4j.version>
            <lombok.version>1.18.14</lombok.version>
            <mysql.version>5.1.47</mysql.version>
            <druid.version>1.1.16</druid.version>
            <mybatis.spring.boot.version>1.3.0</mybatis.spring.boot.version>
        </properties>
    
        
        <dependencyManagement>
            <dependencies>
                
                <dependency>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-dependencies</artifactId>
                    <version>2.2.2.RELEASE</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
                
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>Hoxton.SR1</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
                
                <dependency>
                    <groupId>com.alibaba.cloud</groupId>
                    <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                    <version>2.1.0.RELEASE</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
                <dependency>
                    <groupId>mysql</groupId>
                    <artifactId>mysql-connector-java</artifactId>
                    <version>${mysql.version}</version>
                </dependency>
                <dependency>
                    <groupId>com.alibaba</groupId>
                    <artifactId>druid</artifactId>
                    <version>${druid.version}</version>
                </dependency>
                <dependency>
                    <groupId>org.mybatis.spring.boot</groupId>
                    <artifactId>mybatis-spring-boot-starter</artifactId>
                    <version>${mybatis.spring.boot.version}</version>
                </dependency>
                <dependency>
                    <groupId>junit</groupId>
                    <artifactId>junit</artifactId>
                    <version>${junit.version}</version>
                </dependency>
                <dependency>
                    <groupId>log4j</groupId>
                    <artifactId>log4j</artifactId>
                    <version>${log4j.version}</version>
                </dependency>
                <dependency>
                    <groupId>org.projectlombok</groupId>
                    <artifactId>lombok</artifactId>
                    <version>${lombok.version}</version>
                    <optional>true</optional>
                </dependency>
            </dependencies>
        </dependencyManagement>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                    <configuration>
                        <fork>true</fork>
                        <addResources>true</addResources>
                    </configuration>
                </plugin>
            </plugins>
        </build>
    </project>

**c、IDEA 开启自动构建**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3loajE5OTIwNDE3_size_16_color_FFFFFF_t_70 13]  
**d、IDEA 快捷键 Alt + Shift + Ctrl + /**  
![在这里插入图片描述][20210104202157912.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3loajE5OTIwNDE3_size_16_color_FFFFFF_t_70 14]  
**e、IDEA 重启**

## 2.3-消费者服务 cloud-consumer-order80 ##

**a、右击父工程 mscloud，新建子模块 cloud-consumer-order80**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3loajE5OTIwNDE3_size_16_color_FFFFFF_t_70 15]  
**b、修改子模块 cloud-consumer-order80 中 pom.xml**

**c、修改子模块 cloud-consumer-order80，目录 /src/main/resources 中新建 application.yml**

server:
      port: 80

**d、修改子模块 cloud-consumer-order80，目录 /src/main/java 中新建包 com.atguigu.springcloud**

**e、修改子模块 cloud-consumer-order80，包 com.atguigu.springcloud 中新建启动类 OrderMain80.java**

package com.atguigu.springcloud;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    
    @SpringBootApplication
    public class OrderMain80 {
        public static void main(String[] args) {
            SpringApplication.run(OrderMain80.class, args);
        }
    }

**f、修改子模块 cloud-consumer-order80，目录 /src/main/java 中新建包 com.atguigu.springcloud.entities**

**g、复制子模块 cloud-provider-payment8001 中包 com.atguigu.springcloud.entities 内容到子模块 cloud-consumer-order80 包 com.atguigu.springcloud.entities**

**h、修改子模块 cloud-consumer-order80，目录 /src/main/java 中新建包 com.atguigu.springcloud.config**

**i、修改子模块 cloud-consumer-order80，包 com.atguigu.springcloud.config 中新建 ApplicationContextConfig.java**

package com.atguigu.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();
        }
    }

**RestTemplate 是什么？**

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**。

**RestTemplate 官网及使用**

*  官网：[https://docs.spring.io/spring-framework/docs/4.3.7.RELEASE/javadoc-api/org/springframework/web/client/RestTemplate.html][https_docs.spring.io_spring-framework_docs_4.3.7.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无脑(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。

**j、修改子模块 cloud-consumer-order80，目录 /src/main/java 中新建包 com.atguigu.springcloud.controller**

**k、修改子模块 cloud-consumer-order80，包 com.atguigu.springcloud.controller 中新建 OrderController.java**

package com.atguigu.springcloud.controller;
    
    import com.atguigu.springcloud.entities.CommonResult;
    import com.atguigu.springcloud.entities.Payment;
    import lombok.extern.slf4j.Slf4j;
    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;
    
    import javax.annotation.Resource;
    
    @RestController
    @Slf4j
    public class OrderController {
        public static final String PAYMENT_URL = "http://localhost:8001";
    
        @Resource
        private RestTemplate restTemplate;
    
        @GetMapping("/consumer/payment/create")
        public CommonResult<Payment> create(Payment payment) {
            return restTemplate.postForObject(PAYMENT_URL + "/payment/create", payment, CommonResult.class);// 写
        }
    
        @GetMapping("/consumer/payment/get/{id}")
        public CommonResult<Payment> getPayment(@PathVariable("id") Long id) {
            return restTemplate.getForObject(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
        }
    }

**l、测试子模块 cloud-consumer-order80**

*  启动子模块 cloud-provider-payment8001
 *  启动子模块 cloud-consumer-order80
 *  [http://localhost/consumer/payment/get/31][http_localhost_consumer_payment_get_31]  
    ![在这里插入图片描述][20210105103631479.png]

## 2.4-微服务工程重构 ##

**系统中有重复代码，需要重构**  
![在这里插入图片描述][20210111200722724.png]  
**a、右击父工程 mscloud，新建子模块 cloud-api-commons**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3loajE5OTIwNDE3_size_16_color_FFFFFF_t_70 16]  
**b、修改子模块 cloud-api-commons 中 pom.xml**

**c、修改子模块 cloud-api-commons，目录 /src/main/java 中新建包 com.atguigu.springcloud.entities**\*\*

**d、复制子模块 cloud-consumer-order80 中包 com.atguigu.springcloud.entities 内容到子模块 cloud-api-commons 包 com.atguigu.springcloud.entities**

**e、父工程 mscloud，执行 Maven 命令 mvn clean install**  
![在这里插入图片描述][20201229164708567.png]  
**f、删除子模块 cloud-consumer-order80、cloud-provider-payment8001 中包 com.atguigu.springcloud.entities**

**g、修改子模块 cloud-consumer-order80 中 pom.xml**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3loajE5OTIwNDE3_size_16_color_FFFFFF_t_70 17]

**h、修改子模块 cloud-provider-payment8001 中 pom.xml**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3loajE5OTIwNDE3_size_16_color_FFFFFF_t_70 18]

--------------------

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[2021011119484467.png]: /images/20221120/46cc2cc56a1148efa409fdd00be03cb4.png
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[20201229164708567.png]: /images/20221120/8156ade35ee5482384e5b071316d19db.png
[20210111195237799.png]: /images/20221120/e502123d10824b9e892302e9d21db3b1.png
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[http_localhost_8001_payment_get_31]: http://localhost:8001/payment/get/31
[20210104201117501.png]: /images/20221120/3a0c475ebeb643aea99afb82b4fe9242.png
[20210104201402619.png]: /images/20221120/a0fc053ae2ea4da1889ed6a2091d182b.png
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[20210104202157912.png]: /images/20221120/1f5d31dc8274463e8f3094b346214be2.png
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[https_docs.spring.io_spring-framework_docs_4.3.7.RELEASE_javadoc-api_org_springframework_web_client_RestTemplate.html]: https://docs.spring.io/spring-framework/docs/4.3.7.RELEASE/javadoc-api/org/springframework/web/client/RestTemplate.html
[http_localhost_consumer_payment_get_31]: http://localhost/consumer/payment/get/31
[20210105103631479.png]: /images/20221120/a62b819c0cb3441db68a51018d40f5b1.png
[20210111200722724.png]: https://img-blog.csdnimg.cn/20210111200722724.png
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