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SpringCloud项目准备

时间：2024-05-16 10:42:51浏览次数：18  
标签：项目 SpringCloud org 准备 pay import com public cloud

一、简介

Spring Cloud是一系列框架的有序集合。它基于Spring Boot开发，继承了Spring Boot快速构建和自动化配置的优点，提供了开箱即用、快速启动的特点。

Spring Cloud为开发分布式微服务项目，提供了完整的解决方案，如：

  1. 服务注册与发现：Consul、Nacos、Etcd、Eureka
  2. 服务调用与负载均衡：OpenFeign、LoadBalancer
  3. 分布式事务：Seata、LCN、Hmily
  4. 服务熔断与降级：Resilience4j、Sentinel
  5. 服务链路追踪：Micrometer Tracing
  6. 服务网关：GateWay
  7. 分布式配置管理：Consul、Nacos

二、版本选择

Github 版本说明

image-20240515162034417

三、基础项目创建

3.1 创建父工程

3.1.1 创建项目

image-20240515170429201

3.1.2 删除多余目录

image-20240515170656671

3.1.3 修改字符编码

image-20240515170918206

3.1.4 激活注解生效

image-20240515171126248

3.1.5 设置Java版本

image-20240515171230258

3.1.6 文本过滤

image-20240515171313446

3.1.7 修改 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>com.atguigu.cloud</groupId>
    <artifactId>cloud2024</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>pom</packaging>

    <properties>
        <maven.compiler.source>21</maven.compiler.source>
        <maven.compiler.target>21</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <hutool.version>5.8.22</hutool.version>
        <lombok.version>1.18.30</lombok.version>
        <druid.version>1.1.20</druid.version>
        <mybatis.springboot.version>3.0.2</mybatis.springboot.version>
        <mysql.version>8.0.11</mysql.version>
        <swagger3.version>2.2.0</swagger3.version>
        <mapper.version>4.2.3</mapper.version>
        <fastjson2.version>2.0.40</fastjson2.version>
        <persistence-api.version>1.0.2</persistence-api.version>
        <spring.boot.test.version>3.1.5</spring.boot.test.version>
        <spring.boot.version>3.2.0</spring.boot.version>
        <spring.cloud.version>2023.0.0</spring.cloud.version>
        <spring.cloud.alibaba.version>2022.0.0.0</spring.cloud.alibaba.version>
    </properties>

    <dependencyManagement>
        <dependencies>
            <!--springboot 3.2.0-->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-parent</artifactId>
                <version>${spring.boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!--springcloud 2023.0.0-->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring.cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!--springcloud alibaba 2022.0.0.0-RC2-->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${spring.cloud.alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!--SpringBoot集成mybatis-->
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>${mybatis.springboot.version}</version>
            </dependency>
            <!--Mysql数据库驱动8 -->
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>${mysql.version}</version>
            </dependency>
            <!--SpringBoot集成druid连接池-->
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid-spring-boot-starter</artifactId>
                <version>${druid.version}</version>
            </dependency>
            <!--通用Mapper4之tk.mybatis-->
            <dependency>
                <groupId>tk.mybatis</groupId>
                <artifactId>mapper</artifactId>
                <version>${mapper.version}</version>
            </dependency>
            <!--persistence-->
            <dependency>
                <groupId>javax.persistence</groupId>
                <artifactId>persistence-api</artifactId>
                <version>${persistence-api.version}</version>
            </dependency>
            <!-- fastjson2 -->
            <dependency>
                <groupId>com.alibaba.fastjson2</groupId>
                <artifactId>fastjson2</artifactId>
                <version>${fastjson2.version}</version>
            </dependency>
            <!-- swagger3 调用方式 http://你的主机IP地址:5555/swagger-ui/index.html -->
            <dependency>
                <groupId>org.springdoc</groupId>
                <artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
                <version>${swagger3.version}</version>
            </dependency>
            <!--hutool-->
            <dependency>
                <groupId>cn.hutool</groupId>
                <artifactId>hutool-all</artifactId>
                <version>${hutool.version}</version>
            </dependency>
            <!--lombok-->
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>${lombok.version}</version>
                <optional>true</optional>
            </dependency>
            <!-- spring-boot-starter-test -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <version>${spring.boot.test.version}</version>
                <scope>test</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    
</project>

3.1.8 跳过单元测试

image-20240515194224628

3.2 Mapper4 一键生成

3.2.1 创建数据表

  1. 创建数据库

  2. 执行 SQL 脚本，生成数据表

    DROP TABLE IF EXISTS `t_pay`;
   
CREATE TABLE `t_pay` (
  `id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
  `pay_no` VARCHAR(50) NOT NULL COMMENT '支付流水号',
  `order_no` VARCHAR(50) NOT NULL COMMENT '订单流水号',
  `user_id` INT(10) DEFAULT '1' COMMENT '用户账号ID',
  `amount` DECIMAL(8,2) NOT NULL DEFAULT '9.9' COMMENT '交易金额',
  `deleted` TINYINT(4) UNSIGNED NOT NULL DEFAULT '0' COMMENT '删除标志，默认0不删除，1删除',
  `create_time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
  `update_time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
  PRIMARY KEY (`id`)
) ENGINE=INNODB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COMMENT='支付交易表';
   
INSERT INTO t_pay(pay_no,order_no) VALUES('pay17203699','6544bafb424a');
   
SELECT * FROM t_pay;

3.2.2 创建 module

image-20240515195450978

3.2.3 修改 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>
    <parent>
        <groupId>com.atguigu.cloud</groupId>
        <artifactId>cloud2024</artifactId>
        <version>1.0-SNAPSHOT</version>
    </parent>

    <artifactId>mybatis_generator2024</artifactId>

    <properties>
        <maven.compiler.source>21</maven.compiler.source>
        <maven.compiler.target>21</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <!--Mybatis 通用mapper tk单独使用，自己独有+自带版本号-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.13</version>
        </dependency>
        <!-- Mybatis Generator 自己独有+自带版本号-->
        <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
            <version>1.4.2</version>
        </dependency>
        <!--通用Mapper-->
        <dependency>
            <groupId>tk.mybatis</groupId>
            <artifactId>mapper</artifactId>
        </dependency>
        <!--mysql8.0-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <!--persistence-->
        <dependency>
            <groupId>javax.persistence</groupId>
            <artifactId>persistence-api</artifactId>
        </dependency>
        <!--hutool-->
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
        </dependency>
        <!--lombok-->
        <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>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <resources>
            <resource>
                <directory>${basedir}/src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
            <resource>
                <directory>${basedir}/src/main/resources</directory>
            </resource>
        </resources>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.4.2</version>
                <configuration>
                    <configurationFile>${basedir}/src/main/resources/generatorConfig.xml</configurationFile>
                    <overwrite>true</overwrite>
                    <verbose>true</verbose>
                </configuration>
                <dependencies>
                    <dependency>
                        <groupId>mysql</groupId>
                        <artifactId>mysql-connector-java</artifactId>
                        <version>8.0.33</version>
                    </dependency>
                    <dependency>
                        <groupId>tk.mybatis</groupId>
                        <artifactId>mapper</artifactId>
                        <version>4.2.3</version>
                    </dependency>
                </dependencies>
            </plugin>
        </plugins>
    </build>

</project>

3.2.4 配置文件

  1. 在resources目录下，创建config.properties

    #t_pay表包名
package.name=com.atguigu.cloud

# mysql8.0
jdbc.driverClass = com.mysql.cj.jdbc.Driver
jdbc.url= jdbc:mysql://localhost:3306/db2024?characterEncoding=utf8&useSSL=false&serverTimezone=GMT%2B8&rewriteBatchedStatements=true&allowPublicKeyRetrieval=true
jdbc.user = root
jdbc.password = root

  2. 在resources目录下，创建generatorConfig.xml

    <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
        PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
        "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
   
<generatorConfiguration>
    <properties resource="config.properties"/>
   
    <context id="Mysql" targetRuntime="MyBatis3Simple" defaultModelType="flat">
        <property name="beginningDelimiter" value="`"/>
        <property name="endingDelimiter" value="`"/>
   
        <plugin type="tk.mybatis.mapper.generator.MapperPlugin">
            <property name="mappers" value="tk.mybatis.mapper.common.Mapper"/>
            <property name="caseSensitive" value="true"/>
        </plugin>
   
        <jdbcConnection driverClass="${jdbc.driverClass}"
                        connectionURL="${jdbc.url}"
                        userId="${jdbc.user}"
                        password="${jdbc.password}">
        </jdbcConnection>
   
        <javaModelGenerator targetPackage="${package.name}.entities" targetProject="src/main/java"/>
   
        <sqlMapGenerator targetPackage="${package.name}.mapper" targetProject="src/main/java"/>
   
        <javaClientGenerator targetPackage="${package.name}.mapper" targetProject="src/main/java" type="XMLMAPPER"/>
   
        <table tableName="t_pay" domainObjectName="Pay">
            <generatedKey column="id" sqlStatement="JDBC"/>
        </table>
    </context>
</generatorConfiguration>

3.2.5 运行插件

image-20240515204102702 image-20240515204219769

3.3 创建微服务模块

3.3.1 创建 8001 支付模块

3.3.1.1 创建Module
image-20240515204825888
3.3.1.2 修改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>
    <parent>
        <groupId>com.atguigu.cloud</groupId>
        <artifactId>cloud2024</artifactId>
        <version>1.0-SNAPSHOT</version>
    </parent>

    <artifactId>cloud-provider-payment8001</artifactId>

    <properties>
        <maven.compiler.source>21</maven.compiler.source>
        <maven.compiler.target>21</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <!--SpringBoot通用依赖模块-->
        <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>
        <!--SpringBoot集成druid连接池-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
        </dependency>
        <!-- Swagger3 调用方式 http://你的主机IP地址:5555/swagger-ui/index.html -->
        <dependency>
            <groupId>org.springdoc</groupId>
            <artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
        </dependency>
        <!--mybatis和springboot整合-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
        </dependency>
        <!--Mysql数据库驱动8 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <!--persistence-->
        <dependency>
            <groupId>javax.persistence</groupId>
            <artifactId>persistence-api</artifactId>
        </dependency>
        <!--通用Mapper4-->
        <dependency>
            <groupId>tk.mybatis</groupId>
            <artifactId>mapper</artifactId>
        </dependency>
        <!--hutool-->
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
        </dependency>
        <!-- fastjson2 -->
        <dependency>
            <groupId>com.alibaba.fastjson2</groupId>
            <artifactId>fastjson2</artifactId>
        </dependency>
        <!--lombok-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <scope>provided</scope>
        </dependency>
        <!--test-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>
3.3.1.3 编写application.yml配置文件
server:
  port: 8001

# ==========applicationName + druid-mysql8 driver===================
spring:
  application:
    name: cloud-payment-service

  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/db2024?characterEncoding=utf8&useSSL=false&serverTimezone=GMT%2B8&rewriteBatchedStatements=true&allowPublicKeyRetrieval=true
    username: root
    password: root

# ========================mybatis===================
mybatis:
  mapper-locations: classpath:mapper/*.xml
  type-aliases-package: com.atguigu.cloud.entities
  configuration:
    map-underscore-to-camel-case: true
3.3.1.4 编写主程序
package com.atguigu.cloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import tk.mybatis.spring.annotation.MapperScan;

@SpringBootApplication
@MapperScan("com.atguigu.cloud.mapper")
public class Main8001 {
    public static void main(String[] args) {
        SpringApplication.run(Main8001.class, args);
    }
}
3.3.1.5 复制生成的实体和Mapper到当前模块

image-20240515211812306

3.3.1.6 创建DTO
package com.atguigu.cloud.entities;

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

import java.io.Serializable;
import java.math.BigDecimal;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class PayDTO implements Serializable
{
    private Integer id;
    //支付流水号
    private String payNo;
    //订单流水号
    private String orderNo;
    //用户账号ID
    private Integer userId;
    //交易金额
    private BigDecimal amount;
}
3.3.1.7 编写业务类

  1. service接口

    package com.atguigu.cloud.service;

import com.atguigu.cloud.entities.Pay;

import java.util.List;

public interface PayService {
    int add(Pay pay);
    int delete(Integer id);
    int update(Pay pay);
    Pay getById(Integer id);
    List<Pay> getAll();
}

  2. service实现类

    package com.atguigu.cloud.service;
   
import com.atguigu.cloud.entities.Pay;
import com.atguigu.cloud.mapper.PayMapper;
import jakarta.annotation.Resource;
import org.springframework.stereotype.Service;
   
import java.util.List;
   
@Service
public class PayServiceImpl implements PayService{
   
    @Resource
    private PayMapper payMapper;
   
    @Override
    public int add(Pay pay) {
        return payMapper.insertSelective(pay);
    }
   
    @Override
    public int delete(Integer id) {
        return payMapper.deleteByPrimaryKey(id);
    }
   
    @Override
    public int update(Pay pay) {
        return payMapper.updateByPrimaryKeySelective(pay);
    }
   
    @Override
    public Pay getById(Integer id) {
        return payMapper.selectByPrimaryKey(id);
    }
   
    @Override
    public List<Pay> getAll() {
        return payMapper.selectAll();
    }
}
3.3.1.8 创建controller
package com.atguigu.cloud.controller;

import com.atguigu.cloud.entities.Pay;
import com.atguigu.cloud.entities.PayDTO;
import com.atguigu.cloud.service.PayService;
import jakarta.annotation.Resource;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@Slf4j
public class PayController {

    @Resource
    private PayService payService;

    @PostMapping("/pay/add")
    public String addPay(@RequestBody Pay pay) {
        int i = payService.add(pay);
        return "成功插入记录，返回值：" + i;
    }

    @DeleteMapping("/pay/del/{id}")
    public Integer deletPay(@PathVariable("id") Integer id) {
        return payService.delete(id);
    }

    @PutMapping("/pay/update")
    public String updatePay(@RequestBody PayDTO payDTO) {
        Pay pay = new Pay();
        BeanUtils.copyProperties(payDTO, pay);
        int i = payService.update(pay);
        return "更新成功，返回值：" + i;
    }

    @GetMapping("/pay/get/{id}")
    public Pay getById(@PathVariable("id") Integer id) {
        return payService.getById(id);
    }

    @GetMapping("/pay/get")
    public List<Pay> getAll() {
        return payService.getAll();
    }
}

四、测试 8001 模块接口

网页版 Apifox

4.1 整合swagger

4.1.1 导入依赖

<dependency>
    <groupId>org.springdoc</groupId>
    <artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
</dependency>

4.1.2 controller 添加注解

package com.atguigu.cloud.controller;

import com.atguigu.cloud.entities.Pay;
import com.atguigu.cloud.entities.PayDTO;
import com.atguigu.cloud.service.PayService;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.tags.Tag;
import jakarta.annotation.Resource;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@Slf4j
@Tag(name = "支付微服务模块", description = "支付CRUD")
public class PayController {

    @Resource
    private PayService payService;

    @PostMapping("/pay/add")
    @Operation(summary = "新增", description = "新增支付流水方法，接收 json")
    public String addPay(@RequestBody Pay pay) {
        int i = payService.add(pay);
        return "成功插入记录，返回值：" + i;
    }

    @DeleteMapping("/pay/del/{id}")
    @Operation(summary = "删除",description = "删除支付流水方法")
    public Integer deletPay(@PathVariable("id") Integer id) {
        return payService.delete(id);
    }

    @PutMapping("/pay/update")
    @Operation(summary = "修改",description = "修改支付流水方法")
    public String updatePay(@RequestBody PayDTO payDTO) {
        Pay pay = new Pay();
        BeanUtils.copyProperties(payDTO, pay);
        int i = payService.update(pay);
        return "更新成功，返回值：" + i;
    }

    @GetMapping("/pay/get/{id}")
    @Operation(summary = "按照ID查流水",description = "查询支付流水方法")
    public Pay getById(@PathVariable("id") Integer id) {
        return payService.getById(id);
    }

    @GetMapping("/pay/get")
    @Operation(summary = "查询全部流水",description = "查询支付流水方法")
    public List<Pay> getAll() {
        return payService.getAll();
    }
}

4.1.3 实体类添加注解

package com.atguigu.cloud.entities;

import io.swagger.v3.oas.annotations.media.Schema;

import javax.persistence.Column;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
import java.math.BigDecimal;
import java.util.Date;

/**
 * 表名：t_pay
 * 表注释：支付交易表
*/
@Table(name = "t_pay")
@Schema(title = "支付交易表实体类")
public class Pay {
    @Id
    @GeneratedValue(generator = "JDBC")
    @Schema(title = "主键")
    private Integer id;

    /**
     * 支付流水号
     */
    @Schema(title = "支付流水号")
    @Column(name = "pay_no")
    private String payNo;

    /**
     * 订单流水号
     */
    @Schema(title = "订单流水号")
    @Column(name = "order_no")
    private String orderNo;

    /**
     * 用户账号ID
     */
    @Schema(title = "用户账号ID")
    @Column(name = "user_id")
    private Integer userId;

    /**
     * 交易金额
     */
    @Schema(title = "交易金额")
    private BigDecimal amount;

    /**
     * 删除标志，默认0不删除，1删除
     */
    @Schema(title = "删除标志")
    private Byte deleted;

    /**
     * 创建时间
     */
    @Column(name = "create_time")
    @Schema(title = "创建时间")
    private Date createTime;

    /**
     * 更新时间
     */
    @Column(name = "update_time")
    @Schema(title = "更新时间")
    private Date updateTime;
    ...
}

4.1.4 创建swagger配置类

package com.atguigu.cloud.config;

import io.swagger.v3.oas.models.ExternalDocumentation;
import io.swagger.v3.oas.models.OpenAPI;
import io.swagger.v3.oas.models.info.Info;
import org.springdoc.core.models.GroupedOpenApi;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class Swagger3Config
{
    @Bean
    public GroupedOpenApi PayApi()
    {
        return GroupedOpenApi.builder().group("支付微服务模块").pathsToMatch("/pay/**").build();
    }
    @Bean
    public GroupedOpenApi OtherApi()
    {
        return GroupedOpenApi.builder().group("其它微服务模块").pathsToMatch("/other/**", "/others").build();
    }
    /*@Bean
    public GroupedOpenApi CustomerApi()
    {
        return GroupedOpenApi.builder().group("客户微服务模块").pathsToMatch("/customer/**", "/customers").build();
    }*/

    @Bean
    public OpenAPI docsOpenApi()
    {
        return new OpenAPI()
                .info(new Info().title("cloud2024")
                        .description("通用设计rest")
                        .version("v1.0"))
                .externalDocs(new ExternalDocumentation()
                        .description("www.atguigu.com")
                        .url("https://yiyan.baidu.com/"));
    }
}

4.1.5 重启服务

swagger访问页面

五、修改时间格式

@Table(name = "t_pay")
@Schema(title = "支付交易表实体类")
public class Pay {
    /**
     * 创建时间
     */
    @Column(name = "create_time")
    @Schema(title = "创建时间")
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")
    private Date createTime;

    /**
     * 更新时间
     */
    @Column(name = "update_time")
    @Schema(title = "更新时间")
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")
    private Date updateTime;
    ...
}

六、统一返回对象

6.1 创建ReturnCodeEnum

package com.atguigu.cloud.resp;

import lombok.Getter;

import java.util.Arrays;

@Getter
public enum ReturnCodeEnum {
    /**操作失败**/
    RC999("999","操作XXX失败"),
    /**操作成功**/
    RC200("200","success"),
    /**服务降级**/
    RC201("201","服务开启降级保护,请稍后再试!"),
    /**热点参数限流**/
    RC202("202","热点参数限流,请稍后再试!"),
    /**系统规则不满足**/
    RC203("203","系统规则不满足要求,请稍后再试!"),
    /**授权规则不通过**/
    RC204("204","授权规则不通过,请稍后再试!"),
    /**access_denied**/
    RC403("403","无访问权限,请联系管理员授予权限"),
    /**access_denied**/
    RC401("401","匿名用户访问无权限资源时的异常"),
    RC404("404","404页面找不到的异常"),
    /**服务异常**/
    RC500("500","系统异常，请稍后重试"),
    RC375("375","数学运算异常，请稍后重试"),

    INVALID_TOKEN("2001","访问令牌不合法"),
    ACCESS_DENIED("2003","没有权限访问该资源"),
    CLIENT_AUTHENTICATION_FAILED("1001","客户端认证失败"),
    USERNAME_OR_PASSWORD_ERROR("1002","用户名或密码错误"),
    BUSINESS_ERROR("1004","业务逻辑异常"),
    UNSUPPORTED_GRANT_TYPE("1003", "不支持的认证模式");

    /**自定义状态码**/
    private final String code;
    /**自定义描述**/
    private final String message;

    ReturnCodeEnum(String code, String message){
        this.code = code;
        this.message = message;
    }

    //遍历枚举V1
    public static ReturnCodeEnum getReturnCodeEnum(String code)
    {
        for (ReturnCodeEnum element : ReturnCodeEnum.values()) {
            if(element.getCode().equalsIgnoreCase(code))
            {
                return element;
            }
        }
        return null;
    }
    //遍历枚举V2
    public static ReturnCodeEnum getReturnCodeEnumV2(String code)
    {
        return Arrays.stream(ReturnCodeEnum.values()).filter(x -> x.getCode().equalsIgnoreCase(code)).findFirst().orElse(null);
    }

6.2 创建ResultData对象

package com.atguigu.cloud.resp;

import lombok.Data;
import lombok.experimental.Accessors;

@Data
@Accessors(chain = true)
public class ResultData<T> {

    private String code;/** 结果状态 ,具体状态码参见枚举类ReturnCodeEnum.java*/
    private String message;
    private T data;
    private long timestamp ;

    public ResultData (){
        this.timestamp = System.currentTimeMillis();
    }

    public static <T> ResultData<T> success(T data) {
        ResultData<T> resultData = new ResultData<>();
        resultData.setCode(ReturnCodeEnum.RC200.getCode());
        resultData.setMessage(ReturnCodeEnum.RC200.getMessage());
        resultData.setData(data);
        return resultData;
    }

    public static <T> ResultData<T> fail(String code, String message) {
        ResultData<T> resultData = new ResultData<>();
        resultData.setCode(code);
        resultData.setMessage(message);

        return resultData;
    }
}

6.3 修改controller 返回值

package com.atguigu.cloud.controller;

import com.atguigu.cloud.entities.Pay;
import com.atguigu.cloud.entities.PayDTO;
import com.atguigu.cloud.resp.ResultData;
import com.atguigu.cloud.service.PayService;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.tags.Tag;
import jakarta.annotation.Resource;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@Slf4j
@Tag(name = "支付微服务模块", description = "支付CRUD")
public class PayController {

    @Resource
    private PayService payService;

    @PostMapping("/pay/add")
    @Operation(summary = "新增", description = "新增支付流水方法，接收 json")
    public ResultData<String> addPay(@RequestBody Pay pay) {
        int i = payService.add(pay);
        return ResultData.success("新增成功，返回值：" + i);
    }

    @DeleteMapping("/pay/del/{id}")
    @Operation(summary = "删除",description = "删除支付流水方法")
    public ResultData<Integer> deletPay(@PathVariable("id") Integer id) {
        int i = payService.delete(id);
        return ResultData.success(i);
    }

    @PutMapping("/pay/update")
    @Operation(summary = "修改",description = "修改支付流水方法")
    public ResultData<String> updatePay(@RequestBody PayDTO payDTO) {
        Pay pay = new Pay();
        BeanUtils.copyProperties(payDTO, pay);
        int i = payService.update(pay);
        return ResultData.success("修改成功，返回值：" + i);
    }

    @GetMapping("/pay/get/{id}")
    @Operation(summary = "按照ID查流水",description = "查询支付流水方法")
    public ResultData<Pay> getById(@PathVariable("id") Integer id) {
        Pay pay = payService.getById(id);
        return ResultData.success(pay);
    }

    @GetMapping("/pay/get")
    @Operation(summary = "查询全部流水",description = "查询支付流水方法")
    public ResultData<List<Pay>> getAll() {
        List<Pay> payList = payService.getAll();
        return ResultData.success(payList);
    }
}

七、全局异常处理

package com.atguigu.cloud.exp;

import com.atguigu.cloud.resp.ResultData;
import com.atguigu.cloud.resp.ReturnCodeEnum;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestControllerAdvice;

@Slf4j
@RestControllerAdvice
public class GlobalExceptionHandler {
    /**
     * 默认全局异常处理。
     * @param e the e
     * @return ResultData
     */
    @ExceptionHandler(RuntimeException.class)
    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    public ResultData<String> exception(Exception e) {
        log.error("全局异常信息exception:{}", e.getMessage(), e);
        return ResultData.fail(ReturnCodeEnum.RC500.getCode(),e.getMessage());
    }
}

八、创建订单模块

8.1 创建模块

image-20240515233607490

8.2 修改pom.xml

<dependencies>
    <!--web + actuator-->
    <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>
    <!--lombok-->
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <optional>true</optional>
    </dependency>
    <!--hutool-all-->
    <dependency>
        <groupId>cn.hutool</groupId>
        <artifactId>hutool-all</artifactId>
    </dependency>
    <!--fastjson2-->
    <dependency>
        <groupId>com.alibaba.fastjson2</groupId>
        <artifactId>fastjson2</artifactId>
    </dependency>
    <!-- swagger3 调用方式 http://你的主机IP地址:5555/swagger-ui/index.html -->
    <dependency>
        <groupId>org.springdoc</groupId>
        <artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
    </dependency>
</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

8.3 编写application.yml配置文件

server:
  port: 80

8.4 编写主程序

package com.atguigu.cloud;

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

@SpringBootApplication
public class Main80 {
    public static void main(String[] args) {
        SpringApplication.run(Main80.class, args);
    }
}

8.5 编写业务类

8.5.1 编写实体类

package com.atguigu.cloud.entities;

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

import java.io.Serializable;
import java.math.BigDecimal;

/**
 * 一般而言，调用者不应该获悉服务提供者的entity资源并知道表结构关系，所以服务提供方给出的
 * 接口文档都都应成为DTO
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
public class PayDTO implements Serializable
{
    private Integer id;
    //支付流水号
    private String payNo;
    //订单流水号
    private String orderNo;
    //用户账号ID
    private Integer userId;
    //交易金额
    private BigDecimal amount;
}

8.5.2 编写 RestTemplate 组件

package com.atguigu.cloud.config;

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

@Configuration
public class RestTemplateConfig {

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

8.6 编写controller

package com.atguigu.cloud.controller;

import com.atguigu.cloud.entities.PayDTO;
import com.atguigu.cloud.resp.ResultData;
import jakarta.annotation.Resource;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;

@RestController
@Slf4j
public class OrderController {

    public static final String PAYMENT_URL = "http://localhost:8001";

    @Resource
    private RestTemplate restTemplate;

    @PostMapping("/consumer/pay/add")
    public ResultData addOrder(PayDTO payDTO) {
        return restTemplate.postForObject(PAYMENT_URL + "/pay/add", payDTO, ResultData.class);
    }

    @DeleteMapping("/consumer/pay/del/{id}")
    public ResultData delOrder(@PathVariable("id") Integer id) {
        return restTemplate.postForObject(PAYMENT_URL + "/pay/del/" + id, null, ResultData.class);
    }

    @PutMapping("/consumer/pay/update")
    public ResultData updateOrder(PayDTO payDTO) {
        return restTemplate.postForObject(PAYMENT_URL + "/pay/update", payDTO, ResultData.class);
    }

    @GetMapping("/consumer/pay/get/{id}")
    public ResultData getOrder(@PathVariable("id") Integer id) {
        log.info("id:{}", id);
        return restTemplate.getForObject(PAYMENT_URL + "/pay/get/" + id, ResultData.class);
    }

    @GetMapping("/consumer/pay/get")
    public ResultData getAllOrder() {
        return restTemplate.getForObject(PAYMENT_URL + "/pay/get", ResultData.class);
    }
}

8.7 启动服务，测试

8.7.1 添加service，管理服务

image-20240516094223168 image-20240516094359617 image-20240516094438966

image-20240516094532125

8.7.2 测试接口

网页版 Apifox

九、提取公共模块

9.1 创建cloud-api-commons模块

image-20240516101153595

9.2 修改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>
    <parent>
        <groupId>com.atguigu.cloud</groupId>
        <artifactId>cloud2024</artifactId>
        <version>1.0-SNAPSHOT</version>
    </parent>

    <artifactId>cloud-api-commons</artifactId>

    <properties>
        <maven.compiler.source>21</maven.compiler.source>
        <maven.compiler.target>21</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <!--SpringBoot通用依赖模块-->
        <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.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <!--hutool-->
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
        </dependency>
    </dependencies>

</project>

9.3 复制实体类

image-20240516101849902

9.4 install

image-20240516102144494

9.5 删除各模块多余包

image-20240516102446808 image-20240516102554437

9.6 引入依赖

<!-- 引入自己定义的api通用包 -->
<dependency>
    <groupId>com.atguigu.cloud</groupId>
    <artifactId>cloud-api-commons</artifactId>
    <version>1.0-SNAPSHOT</version>
</dependency>

标签：项目,SpringCloud,org,准备,pay,import,com,public,cloud
From： https://www.cnblogs.com/finish/p/18195497

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