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网站底部放置备案号,wordpress 配置模板,东莞网站没计,音乐网站建设成本2025-微服务—SpringCloud 第一章、从Boot和Cloud版本选型开始说起1、Springboot版本2、Springcloud版本3、Springcloud Alibaba4、本次讲解定稿版第二章关于Cloud各种组件的停更/升级/替换1、微服务介绍2、SpringCloud是什么#xff1f;能干吗#xff1f;产生背景#xf… 2025-微服务—SpringCloud 第一章、从Boot和Cloud版本选型开始说起1、Springboot版本2、Springcloud版本3、Springcloud Alibaba4、本次讲解定稿版第二章关于Cloud各种组件的停更/升级/替换1、微服务介绍2、SpringCloud是什么能干吗产生背景3、本次讲解定稿速通版4、Netflix OSS被移除的原因5、2024第三季(新版第三章微服务架构编码Base工程模块构建1、订单→支付业务需求说明2、约定配置编码3、IDEA新建Project和Maven父工程4、Mapper4之一键生成5、Rest通用Base工程构建6、引入微服务理念从这里开始7、为什么要引入微服务 第一章、从Boot和Cloud版本选型开始说起 – 各个版本 Java17 cloud 2023.0.0 boot 3.2.0 cloud alibaba 2022.0.0.0-RC2 Maven 3.9 Mysql 8.0 //不许捣蛋上述全部版本必须按照要求1、Springboot版本 springBoot git源码地址 springBoot官网查看springBoot版本
SpringBoot3.0崛起通过上面官网发现Boot官方强烈建议你使用Java17升级到3.X以上版本2、Springcloud版本 Springcloud git源码地址 Springcloud官网 Cloud命名规则 SpringCloud的版发展史 Spring Cloud 采用了英国伦敦地铁站英国伦敦地铁站的名称来命名并由地铁站名称字母A-Z依次类推的形式来发布迭代版本 SpringCloud是一个由许多子项目组成的综合项目各子项目有不同的发布节奏。为了管理SpringCloud与各子项目的版本依赖关系发布了一个清单其中包括了某个SpringCloud版本对应的子项目版本。为了避免SpringCloud版本号与子项目版本号混淆 SpringCloud版本采用了名称而非版本号的命名这些版本的名字采用了伦敦地铁站的名字根据字母表的顺序来对应版本时间顺序。例如Angel是第一个版本, Brixton是第二个版本。当SpringCloud的发布内容积累到临界点或者一个重大BUG被解决后会发布一个service releases版本简称SRX版本比如Greenwich.SR2就是SpringCloud发布的Greenwich版本的第2个SRX版本。 springcloud(截至2025.1.9) Spring Cloud
3、Springcloud Alibaba 查看Spring Cloud Alibaba版本—官网有延后情况非最新版不推荐 SpringCloud Alibaba官网Github说明毕业版本依赖关系(推荐使用) Spring Cloud Alibaba版本参考文档版本选择
4、本次讲解定稿版 Java17 cloud 2023.0.0 boot 3.2.0 cloud alibaba 2022.0.0.0-RC2 Maven 3.9 Mysql 8.0 SpringCloud VS SpringCloud VS SpringCloud Alibaba版本三者制约对应关系若同时用boot和cloud由话事人cloud决定boot版本注Spring cloud Alibaba毕业版本依赖关系(推荐使用) 第二章关于Cloud各种组件的停更/升级/替换 SpringBoot3 小白零基础教程视频零基础微服务架构理论入门视频 1、微服务介绍 2、SpringCloud是什么能干吗产生背景让程序员专注于业务逻辑有第3方支援
3、本次讲解定稿速通版 4、Netflix OSS被移除的原因 Netflix哪些被移除了
Spring Cloud Netflix项目进入维护模式停更不停用; –被动修复bugs不再接受合并请求不再发布新版本由停更引发的“升级惨案” 2018第一季(旧版
2020第二季(旧版备注: 如果被remove掉的组件不再使用。 5、2024第三季(新版第三章微服务架构编码Base工程模块构建 1、订单→支付业务需求说明 2、约定配置编码 1什么是约定 springboot springcloud用什么版本 springcloud组件用哪些约定好pom工程 2配置能用配置的就用配置少动手编码 maven配置maven测试yml文件配置 3编码多动手编码一看就会一做就废从入门到劝退。 3、IDEA新建Project和Maven父工程微服务cloud整体聚合Maven父工程Project Maven父工程步骤 1New Project
2 聚合总父工程名字 3字符编码 4 注解生效激活 5 java编译版本选17 6 File Type过滤父工程POM文件内容 ?xml version1.0 encodingUTF-8? project xmlnshttp://maven.apache.org/POM/4.0.0xmlns:xsihttp://www.w3.org/2001/XMLSchema-instancexsi:schemaLocationhttp://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsdmodelVersion4.0.0/modelVersiongroupIdcom.atguigu.cloud/groupIdartifactIdmscloudV5/artifactIdversion1.0-SNAPSHOT/versionpackagingpom/packagingpropertiesmaven.compiler.source17/maven.compiler.sourcemaven.compiler.target17/maven.compiler.targetproject.build.sourceEncodingUTF-8/project.build.sourceEncodinghutool.version5.8.22/hutool.versionlombok.version1.18.26/lombok.versiondruid.version1.1.20/druid.versionmybatis.springboot.version3.0.2/mybatis.springboot.versionmysql.version8.0.11/mysql.versionswagger3.version2.2.0/swagger3.versionmapper.version4.2.3/mapper.versionfastjson2.version2.0.40/fastjson2.versionpersistence-api.version1.0.2/persistence-api.versionspring.boot.test.version3.1.5/spring.boot.test.versionspring.boot.version3.2.0/spring.boot.versionspring.cloud.version2023.0.0/spring.cloud.versionspring.cloud.alibaba.version2022.0.0.0-RC2/spring.cloud.alibaba.version/propertiesdependencyManagementdependencies!–springboot 3.2.0–dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-parent/artifactIdversion${spring.boot.version}/versiontypepom/typescopeimport/scope/dependency!--springcloud 2023.0.0--dependencygroupIdorg.springframework.cloud/groupIdartifactIdspring-cloud-dependencies/artifactIdversion${spring.cloud.version}/versiontypepom/typescopeimport/scope/dependency!–springcloud alibaba 2022.0.0.0-RC2–dependencygroupIdcom.alibaba.cloud/groupIdartifactIdspring-cloud-alibaba-dependencies/artifactIdversion${spring.cloud.alibaba.version}/versiontypepom/typescopeimport/scope/dependency!--SpringBoot集成mybatis--dependencygroupIdorg.mybatis.spring.boot/groupIdartifactIdmybatis-spring-boot-starter/artifactIdversion${mybatis.springboot.version}/version/dependency!–Mysql数据库驱动8 –dependencygroupIdmysql/groupIdartifactIdmysql-connector-java/artifactIdversion${mysql.version}/version/dependency!--SpringBoot集成druid连接池--dependencygroupIdcom.alibaba/groupIdartifactIddruid-spring-boot-starter/artifactIdversion${druid.version}/version/dependency!–通用Mapper4之tk.mybatis–dependencygroupIdtk.mybatis/groupIdartifactIdmapper/artifactIdversion${mapper.version}/version/dependency!--persistence--dependencygroupIdjavax.persistence/groupIdartifactIdpersistence-api/artifactIdversion${persistence-api.version}/version/dependency!– fastjson2 –dependencygroupIdcom.alibaba.fastjson2/groupIdartifactIdfastjson2/artifactIdversion${fastjson2.version}/version/dependency!-- swagger3 调用方式 http://你的主机IP地址:5555/swagger-ui/index.html --dependencygroupIdorg.springdoc/groupIdartifactIdspringdoc-openapi-starter-webmvc-ui/artifactIdversion${swagger3.version}/version/dependency!–hutool–dependencygroupIdcn.hutool/groupIdartifactIdhutool-all/artifactIdversion${hutool.version}/version/dependency!--lombok--dependencygroupIdorg.projectlombok/groupIdartifactIdlombok/artifactIdversion${lombok.version}/versionoptionaltrue/optional/dependency!– spring-boot-starter-test –dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-test/artifactIdversion${spring.boot.test.version}/versionscopetest/scope/dependency/dependencies/dependencyManagement /projectMaven工程落地细节复习 Maven中的DependencyManagement和Dependencies dependencyManagement Maven 使用dependencyManagement 元素来提供了一种管理依赖版本号的方式。通常会在一个组织或者项目的最顶层的父POM 中看到dependencyManagement 元素。使用pom.xml 中的dependencyManagement 元素能让所有在子项目中引用一个依赖而不用显式的列出版本号。 Maven会沿着父子层次向上走直到找到一个拥有dependencyManagement 元素的项目然后它就会使用这个 dependencyManagement 元素中指定的版本号。这样做的好处就是如果有多个子项目都引用同一样依赖则可以避免在每个使用的子项目里都声明一个版本号优势 dependencyManagement里只是声明依赖并不实现引入因此子项目需要显示的声明需要用的依赖。如果不在子项目中声明依赖是不会从父项目中继承下来的只有在子项目中写了该依赖项并且没有指定具体版本才会从父项目中继承该项且version和scope都读取自父pom; 如果子项目中指定了版本号那么会使用子项目中指定的jar版本。maven中跳过单元测试 1配置 build !– maven 中跳过单元测试 – plugins plugin groupId org.apache.maven.plugins / groupId artifactId maven-surefire-plugin / artifactId configuration skip true / skip / configuration / plugin / plugins / build 2IDEA工具支持(推荐) mysql驱动说明 Mysql5

mysql5.7—JDBC四件套

jdbc.driverClass com.mysql.jdbc.Driver jdbc.url jdbc:mysql://localhost:3306/db2024?useUnicodetruecharacterEncodingUTF-8useSSLfalse jdbc.user root jdbc.password 123456# Maven的POM文件处理 dependencygroupIdmysql/groupIdartifactIdmysql-connector-java/artifactIdversion5.1.47/version /dependencyMysql8

mysql8.0—JDBC四件套

jdbc.driverClass com.mysql.cj.jdbc.Driver jdbc.url jdbc:mysql://localhost:3306/db2024?characterEncodingutf8useSSLfalseserverTimezoneGMT%2B8rewriteBatchedStatementstrueallowPublicKeyRetrievaltrue jdbc.user root jdbc.password 123456# Maven的POM dependencygroupIdmysql/groupIdartifactIdmysql-connector-java/artifactIdversion8.0.11/version /dependency4、Mapper4之一键生成 mybatis-generator官网本次使用Mapper4 MyBatis通用Mapper4官网下一代MyBatis 通用 Mapper5官网一键生成步骤 db2024库t_pay支付信息表SQL 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) ) ENGINEINNODB AUTO_INCREMENT1 DEFAULT CHARSETutf8mb4 COMMENT支付交易表;INSERT INTO t_pay(pay_no,order_no) VALUES(pay17203699,6544bafb424a);SELECT * FROM t_pay;Module 普通Maven工程— mybatis_generator2024 POM ?xml version1.0 encodingUTF-8? project xmlnshttp://maven.apache.org/POM/4.0.0xmlns:xsihttp://www.w3.org/2001/XMLSchema-instancexsi:schemaLocationhttp://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsdmodelVersion4.0.0/modelVersionparentgroupIdcom.atguigu.cloud/groupIdartifactIdmscloudV5/artifactIdversion1.0-SNAPSHOT/version/parent!–我自己独一份只是一个普通Maven工程与boot和cloud无关–artifactIdmybatis_generator2024/artifactIdpropertiesmaven.compiler.source17/maven.compiler.sourcemaven.compiler.target17/maven.compiler.targetproject.build.sourceEncodingUTF-8/project.build.sourceEncoding/propertiesdependencies!–Mybatis 通用mapper tk单独使用自己独有自带版本号–dependencygroupIdorg.mybatis/groupIdartifactIdmybatis/artifactIdversion3.5.13/version/dependency!– Mybatis Generator 自己独有自带版本号–dependencygroupIdorg.mybatis.generator/groupIdartifactIdmybatis-generator-core/artifactIdversion1.4.2/version/dependency!–通用Mapper–dependencygroupIdtk.mybatis/groupIdartifactIdmapper/artifactId/dependency!–mysql8.0–dependencygroupIdmysql/groupIdartifactIdmysql-connector-java/artifactId/dependency!–persistence–dependencygroupIdjavax.persistence/groupIdartifactIdpersistence-api/artifactId/dependency!–hutool–dependencygroupIdcn.hutool/groupIdartifactIdhutool-all/artifactId/dependency!–lombok–dependencygroupIdorg.projectlombok/groupIdartifactIdlombok/artifactIdoptionaltrue/optional/dependencydependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-test/artifactIdscopetest/scopeexclusionsexclusiongroupIdorg.junit.vintage/groupIdartifactIdjunit-vintage-engine/artifactId/exclusion/exclusions/dependency/dependenciesbuildresourcesresourcedirectory${basedir}/src/main/java/directoryincludesinclude**/*.xml/include/includes/resourceresourcedirectory${basedir}/src/main/resources/directory/resource/resourcespluginsplugingroupIdorg.springframework.boot/groupIdartifactIdspring-boot-maven-plugin/artifactIdconfigurationexcludesexcludegroupIdorg.projectlombok/groupIdartifactIdlombok/artifactId/exclude/excludes/configuration/pluginplugingroupIdorg.mybatis.generator/groupIdartifactIdmybatis-generator-maven-plugin/artifactIdversion1.4.2/versionconfigurationconfigurationFile${basedir}/src/main/resources/generatorConfig.xml/configurationFileoverwritetrue/overwriteverbosetrue/verbose/configurationdependenciesdependencygroupIdmysql/groupIdartifactIdmysql-connector-java/artifactIdversion8.0.33/version/dependencydependencygroupIdtk.mybatis/groupIdartifactIdmapper/artifactIdversion4.2.3/version/dependency/dependencies/plugin/plugins/build/project配置 src\main\resources路径下新建 config.properties mysql5 #User表包名 package.namecom.atguigu.cloud

mysql5.7

jdbc.driverClass com.mysql.jdbc.Driver jdbc.url jdbc:mysql://localhost:3306/db2024?useUnicodetruecharacterEncodingUTF-8useSSLfalse jdbc.user root jdbc.password 123456mysql8 #t_pay表包名 package.namecom.atguigu.cloud# mysql8.0 jdbc.driverClass com.mysql.cj.jdbc.Driver jdbc.url jdbc:mysql://localhost:3306/db2024?characterEncodingutf8useSSLfalseserverTimezoneGMT%2B8rewriteBatchedStatementstrueallowPublicKeyRetrievaltrue jdbc.user root jdbc.password 123456src\main\resources路径下新建 generatorConfig.xml ?xml version1.0 encodingUTF-8? !DOCTYPE generatorConfigurationPUBLIC -//mybatis.org//DTD MyBatis Generator Configuration 1.0//ENhttp://mybatis.org/dtd/mybatis-generator-config_1_0.dtdgeneratorConfigurationproperties resourceconfig.properties/context idMysql targetRuntimeMyBatis3Simple defaultModelTypeflatproperty namebeginningDelimiter value/property nameendingDelimiter value/plugin typetk.mybatis.mapper.generator.MapperPluginproperty namemappers valuetk.mybatis.mapper.common.Mapper/property namecaseSensitive valuetrue//pluginjdbcConnection driverClass${jdbc.driverClass}connectionURL${jdbc.url}userId${jdbc.user}password${jdbc.password}/jdbcConnectionjavaModelGenerator targetPackage${package.name}.entities targetProjectsrc/main/java/sqlMapGenerator targetPackage${package.name}.mapper targetProjectsrc/main/java/javaClientGenerator targetPackage${package.name}.mapper targetProjectsrc/main/java typeXMLMAPPER/table tableNamet_pay domainObjectNamePaygeneratedKey columnid sqlStatementJDBC//table/context /generatorConfiguration 一键生成双击插件mybatis-generator:gererate 一键生成entitymapper接口xml实现SQL
5、Rest通用Base工程构建工程V1 cloud-provider-payment8001 微服务提供者支付Module模块微服务小口诀 1 建module 2 改POM 3 写YML 4 主启动 5 业务类步骤建module 建普通Maven模块 cloud-provider-payment8001 创建完成后请回到父工程查看pom文件变化改POM ?xml version1.0 encodingUTF-8? project xmlnshttp://maven.apache.org/POM/4.0.0xmlns:xsihttp://www.w3.org/2001/XMLSchema-instancexsi:schemaLocationhttp://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsdmodelVersion4.0.0/modelVersionparentgroupIdcom.atguigu.cloud/groupIdartifactIdmscloudV5/artifactIdversion1.0-SNAPSHOT/version/parentartifactIdcloud-provider-payment8001/artifactIdpropertiesmaven.compiler.source17/maven.compiler.sourcemaven.compiler.target17/maven.compiler.targetproject.build.sourceEncodingUTF-8/project.build.sourceEncoding/propertiesdependencies!–SpringBoot通用依赖模块–dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-web/artifactId/dependencydependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-actuator/artifactId/dependency!–SpringBoot集成druid连接池–dependencygroupIdcom.alibaba/groupIdartifactIddruid-spring-boot-starter/artifactId/dependency!– Swagger3 调用方式 http://你的主机IP地址:5555/swagger-ui/index.html –dependencygroupIdorg.springdoc/groupIdartifactIdspringdoc-openapi-starter-webmvc-ui/artifactId/dependency!–mybatis和springboot整合–dependencygroupIdorg.mybatis.spring.boot/groupIdartifactIdmybatis-spring-boot-starter/artifactId/dependency!–Mysql数据库驱动8 –dependencygroupIdmysql/groupIdartifactIdmysql-connector-java/artifactId/dependency!–persistence–dependencygroupIdjavax.persistence/groupIdartifactIdpersistence-api/artifactId/dependency!–通用Mapper4–dependencygroupIdtk.mybatis/groupIdartifactIdmapper/artifactId/dependency!–hutool–dependencygroupIdcn.hutool/groupIdartifactIdhutool-all/artifactId/dependency!– fastjson2 –dependencygroupIdcom.alibaba.fastjson2/groupIdartifactIdfastjson2/artifactId/dependency!–lombok–dependencygroupIdorg.projectlombok/groupIdartifactIdlombok/artifactIdversion1.18.28/versionscopeprovided/scope/dependency!–test–dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-test/artifactIdscopetest/scope/dependency/dependenciesbuildpluginsplugingroupIdorg.springframework.boot/groupIdartifactIdspring-boot-maven-plugin/artifactId/plugin/plugins/build /project写YML server:port: 8001# applicationName druid-mysql8 driver spring:application:name: cloud-payment-servicedatasource:type: com.alibaba.druid.pool.DruidDataSourcedriver-class-name: com.mysql.cj.jdbc.Driverurl: jdbc:mysql://localhost:3306/db2024?characterEncodingutf8useSSLfalseserverTimezoneGMT%2B8rewriteBatchedStatementstrueallowPublicKeyRetrievaltrueusername: rootpassword: 123456# mybatis mybatis:mapper-locations: classpath:mapper/.xmltype-aliases-package: com.atguigu.cloud.entitiesconfiguration:map-underscore-to-camel-case: true业务类将之前一键生成的代码直接拷贝进8001模块 entities 主实体Pay 搜索便笺 package com.atguigu.cloud.entities;import java.math.BigDecimal; import java.util.Date; import javax.persistence.;/*** 表名t_pay* 表注释支付交易表 / Table(name t_pay) public class Pay {IdGeneratedValue(generator JDBC)private Integer id;/** 支付流水号/Column(name pay_no)private String payNo;/** 订单流水号/Column(name order_no)private String orderNo;/** 用户账号ID/Column(name user_id)private Integer userId;/** 交易金额/private BigDecimal amount;/** 删除标志默认0不删除1删除/private Byte deleted;/** 创建时间/Column(name create_time)private Date createTime;/** 更新时间/Column(name update_time)private Date updateTime;/** return id/public Integer getId() {return id;}/** param id/public void setId(Integer id) {this.id id;}/** 获取支付流水号** return payNo - 支付流水号/public String getPayNo() {return payNo;}/** 设置支付流水号** param payNo 支付流水号/public void setPayNo(String payNo) {this.payNo payNo;}/** 获取订单流水号** return orderNo - 订单流水号/public String getOrderNo() {return orderNo;}/** 设置订单流水号** param orderNo 订单流水号/public void setOrderNo(String orderNo) {this.orderNo orderNo;}/** 获取用户账号ID** return userId - 用户账号ID/public Integer getUserId() {return userId;}/** 设置用户账号ID** param userId 用户账号ID/public void setUserId(Integer userId) {this.userId userId;}/** 获取交易金额** return amount - 交易金额/public BigDecimal getAmount() {return amount;}/** 设置交易金额** param amount 交易金额/public void setAmount(BigDecimal amount) {this.amount amount;}/** 获取删除标志默认0不删除1删除** return deleted - 删除标志默认0不删除1删除/public Byte getDeleted() {return deleted;}/** 设置删除标志默认0不删除1删除** param deleted 删除标志默认0不删除1删除/public void setDeleted(Byte deleted) {this.deleted deleted;}/** 获取创建时间** return createTime - 创建时间/public Date getCreateTime() {return createTime;}/** 设置创建时间** param createTime 创建时间/public void setCreateTime(Date createTime) {this.createTime createTime;}/** 获取更新时间** return updateTime - 更新时间/public Date getUpdateTime() {return updateTime;}/** 设置更新时间** param updateTime 更新时间/public void setUpdateTime(Date updateTime) {this.updateTime updateTime;} } 传递数值PayDTO package com.atguigu.cloud.entities;import io.swagger.v3.oas.annotations.media.Schema; import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor;import java.io.Serializable; import java.math.BigDecimal;/** auther zzyy* create 2023-11-03 18:58/ 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IDprivate Integer userId;//交易金额private BigDecimal amount; }mapper Mapper接口PayMapper package com.atguigu.cloud.mapper;import com.atguigu.cloud.entities.Pay; import tk.mybatis.mapper.common.Mapper;public interface PayMapper extends MapperPay { } 映射文件PayMapper.xml src\main\resources路径下新建文件夹mapper。拷贝PayMapper.xml进上一步的mapper文件夹 PayMapper.xml ?xml version1.0 encodingUTF-8? !DOCTYPE mapper PUBLIC -//mybatis.org//DTD Mapper 3.0//EN http://mybatis.org/dtd/mybatis-3-mapper.dtd mapper namespacecom.atguigu.cloud.mapper.PayMapperresultMap idBaseResultMap typecom.atguigu.cloud.entities.Pay!–WARNING - mbg.generated–id columnid jdbcTypeINTEGER propertyid /result columnpay_no jdbcTypeVARCHAR propertypayNo /result columnorder_no jdbcTypeVARCHAR propertyorderNo /result columnuser_id jdbcTypeINTEGER propertyuserId /result columnamount jdbcTypeDECIMAL propertyamount /result columndeleted jdbcTypeTINYINT propertydeleted /result columncreate_time jdbcTypeTIMESTAMP propertycreateTime /result columnupdate_time jdbcTypeTIMESTAMP propertyupdateTime //resultMap /mapperservice 服务接口PayService package com.atguigu.cloud.service;import com.atguigu.cloud.entities.Pay;import java.util.List;/** auther zzyy* create 2023-11-03 18:40/ public interface PayService {public int add(Pay pay);public int delete(Integer id);public int update(Pay pay);public Pay getById(Integer id);public ListPay getAll(); }实现类PayServiceImpl package com.atguigu.cloud.service.impl;import com.atguigu.cloud.entities.Pay; import com.atguigu.cloud.mapper.PayMapper; import com.atguigu.cloud.service.PayService; import jakarta.annotation.Resource; import org.springframework.stereotype.Service;import java.util.List;/** auther zzyy* create 2023-11-03 18:44/ Service public class PayServiceImpl implements PayService{ResourcePayMapper payMapper;Overridepublic int add(Pay pay){return payMapper.insertSelective(pay);}Overridepublic int delete(Integer id){return payMapper.deleteByPrimaryKey(id);}Overridepublic int update(Pay pay){return payMapper.updateByPrimaryKeySelective(pay);}Overridepublic Pay getById(Integer id){return payMapper.selectByPrimaryKey(id);}Overridepublic ListPay getAll(){return payMapper.selectAll();} }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 io.swagger.v3.oas.annotations.Operation; import io.swagger.v3.oas.annotations.tags.Tag; import jakarta.annotation.Resource; import org.springframework.beans.BeanUtils; import org.springframework.web.bind.annotation.;/*** auther zzyy* create 2023-11-03 18:55/ RestController public class PayController{Resource PayService payService;PostMapping(value /pay/add)public String addPay(RequestBody Pay pay){System.out.println(pay.toString());int i payService.add(pay);return 成功插入记录返回值i;}DeleteMapping(value /pay/del/{id})public Integer deletePay(PathVariable(id) Integer id) {return payService.delete(id);}PutMapping(value /pay/update)public String updatePay(RequestBody PayDTO payDTO){Pay pay new Pay();BeanUtils.copyProperties(payDTO, pay);int i payService.update(pay);return 成功修改记录返回值i;}GetMapping(value /pay/get/{id})public Pay getById(PathVariable(id) Integer id){return payService.getById(id);}//全部查询getall作为家庭作业 } 测试 PostMan add {payNo: 17204076,orderNo: 6544de1c424a,userId: 2,amount: 19.90 }json测试字段和我们的entity实体类字段一一对应 delete update
select Swagger3 Controller 使用Tag 修改PayController 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 org.springframework.beans.BeanUtils; import org.springframework.web.bind.annotation.;/*** auther zzyy* create 2023-11-03 18:55/ RestController Tag(name 支付微服务模块,description 支付CRUD) public class PayController {ResourcePayService payService;PostMapping(value /pay/add)Operation(summary 新增,description 新增支付流水方法,json串做参数)public String addPay(RequestBody Pay pay){System.out.println(pay.toString());int i payService.add(pay);return 成功插入记录返回值i;}DeleteMapping(value /pay/del/{id})Operation(summary 删除,description 删除支付流水方法)public Integer deletePay(PathVariable(id) Integer id) {return payService.delete(id);}PutMapping(value /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 成功修改记录返回值i;}GetMapping(value /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);}//全部查询getall作为家庭作业 } 方法 Operation entity或者DTO Schema 含分组迭代的Config配置类 Swagger3Config 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;/** auther zzyy* create 2023-11-04 10:40*/ Configuration public class Swagger3Config {Beanpublic GroupedOpenApi PayApi(){return GroupedOpenApi.builder().group(支付微服务模块).pathsToMatch(/pay/).build();}Beanpublic GroupedOpenApi OtherApi(){return GroupedOpenApi.builder().group(其它微服务模块).pathsToMatch(/other/, /others).build();}/Beanpublic GroupedOpenApi CustomerApi(){return GroupedOpenApi.builder().group(客户微服务模块).pathsToMatch(/customer/**, /customers).build();}/Beanpublic 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/));} }调用方式 http://localhost:8001/swagger-ui/index.html 上述模块还有那些问题 1、时间格式问题时间日志格式的统一和定制情况 2、Java如何设计API接口实现统一格式返回影响前端/小程序/app等交互体验和开发 void、数值、String、对象entity、Map … 看看目前程序返回值情况故意写了多种返回类值 3、全局异常接入返回的标准格式有统一返回值全局统一异常工程V2 cloud-provider-payment8001 微服务提供者支付Module模块V2改进版 1 解决时间格式问题 /*** 创建时间/ Column(name create_time) JsonFormat(pattern yyyy-MM-dd HH:mm:ss, timezone GMT8) private Date createTime;/** 更新时间/ Column(name update_time) JsonFormat(pattern yyyy-MM-dd HH:mm:ss, timezone GMT8) private Date updateTime;2 解决统一返回值思路
步骤新建枚举类ReturnCodeEnum HTTP请求返回的状态码
ReturnCodeEnum package com.atguigu.cloud.resp;import lombok.Getter;import java.util.Arrays;/** auther zzyy* create 2023-11-04 11:51*/ 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V1public static ReturnCodeEnum getReturnCodeEnum(String code){for (ReturnCodeEnum element : ReturnCodeEnum.values()) {if(element.getCode().equalsIgnoreCase(code)){return element;}}return null;}//遍历枚举V2public static ReturnCodeEnum getReturnCodeEnumV2(String code){return Arrays.stream(ReturnCodeEnum.values()).filter(x - x.getCode().equalsIgnoreCase(code)).findFirst().orElse(null);}/public static void main(String[] args){System.out.println(getReturnCodeEnumV2(200));System.out.println(getReturnCodeEnumV2(200).getCode());System.out.println(getReturnCodeEnumV2(200).getMessage());}/ } 新建统一定义返回对象ResultData ResultData package com.atguigu.cloud.resp;import lombok.Data; import lombok.experimental.Accessors;/*** auther zzyy* create 2023-11-04 11:59/ Data Accessors(chain true) public class ResultDataT {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 ResultDataT success(T data) {ResultDataT resultData new ResultData();resultData.setCode(ReturnCodeEnum.RC200.getCode());resultData.setMessage(ReturnCodeEnum.RC200.getMessage());resultData.setData(data);return resultData;}public static T ResultDataT fail(String code, String message) {ResultDataT resultData new ResultData();resultData.setCode(code);resultData.setMessage(message);return resultData;}}修改PayController 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 org.springframework.beans.BeanUtils; import org.springframework.web.bind.annotation.;/** auther zzyy* create 2023-11-12 22:34/ RestController Tag(name 支付微服务模块,description 支付CRUD) public class PayController {ResourcePayService payService;PostMapping(value /pay/add)Operation(summary 新增,description 新增支付流水方法,json串做参数)public ResultDataString addPay(RequestBody Pay pay){System.out.println(pay.toString());int i payService.add(pay);return ResultData.success(成功插入记录返回值i);}DeleteMapping(value /pay/del/{id})Operation(summary 删除,description 删除支付流水方法)public ResultDataInteger deletePay(PathVariable(id) Integer id) {int i payService.delete(id);return ResultData.success(i);}PutMapping(value /pay/update)Operation(summary 修改,description 修改支付流水方法)public ResultDataString updatePay(RequestBody PayDTO payDTO){Pay pay new Pay();BeanUtils.copyProperties(payDTO, pay);int i payService.update(pay);return ResultData.success(成功修改记录返回值i);}GetMapping(value /pay/get/{id})Operation(summary 按照ID查流水,description 查询支付流水方法)public ResultDataPay getById(PathVariable(id) Integer id){Pay pay payService.getById(id);return ResultData.success(pay);}//全部查询getall作为家庭作业 } 测试 http://localhost:8001/pay/get/1 结论通过ResultData.success()对返回结果进行包装后返回给前端优化驱动力 ??? 查询方法写个bug if(id -4) throw new RuntimeException(“id不能为负数”); 3 解决全局异常接入返回的标准格式
新建全局异常类GlobalExceptionHandler 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;/** auther zzyy* create 2023-11-04 12:20/ 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 ResultDataString exception(Exception e) {System.out.println(—-come in GlobalExceptionHandler);log.error(全局异常信息exception:{}, e.getMessage(), e);return ResultData.fail(ReturnCodeEnum.RC500.getCode(),e.getMessage());} }修改Controller 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.resp.ReturnCodeEnum; 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 org.springframework.beans.BeanUtils; import org.springframework.web.bind.annotation.;/*** auther zzyy* create 2023-12-12 22:34/ RestController Tag(name 支付微服务模块,description 支付CRUD) public class PayController {ResourcePayService payService;PostMapping(value /pay/add)Operation(summary 新增,description 新增支付流水方法,json串做参数)public ResultDataString addPay(RequestBody Pay pay){System.out.println(pay.toString());int i payService.add(pay);return ResultData.success(成功插入记录返回值i);}DeleteMapping(value /pay/del/{id})Operation(summary 删除,description 删除支付流水方法)public ResultDataInteger deletePay(PathVariable(id) Integer id) {int i payService.delete(id);return ResultData.success(i);}PutMapping(value /pay/update)Operation(summary 修改,description 修改支付流水方法)public ResultDataString updatePay(RequestBody PayDTO payDTO){Pay pay new Pay();BeanUtils.copyProperties(payDTO, pay);int i payService.update(pay);return ResultData.success(成功修改记录返回值i);}GetMapping(value /pay/get/{id})Operation(summary 按照ID查流水,description 查询支付流水方法)public ResultDataPay getById(PathVariable(id) Integer id){if(id -4) throw new RuntimeException(id不能为负数);Pay pay payService.getById(id);return ResultData.success(pay);}//全部查询getall作为家庭作业RequestMapping(value /pay/error,method RequestMethod.GET)public ResultDataInteger getPayError(){Integer i Integer.valueOf(200);try{System.out.println(——–come here);int data ¹⁰⁄₀;}catch (Exception e){e.printStackTrace();return ResultData.fail(ReturnCodeEnum.RC500.getCode(),e.getMessage());}return ResultData.success(i);} } 目前工程目录结构
6、引入微服务理念从这里开始订单微服务80如何才能调用到支付微服务8001 cloud-consumer-order80微服务调用者订单Module模块建cloud-consumer-order80改POM ?xml version1.0 encodingUTF-8? project xmlnshttp://maven.apache.org/POM/4.0.0xmlns:xsihttp://www.w3.org/2001/XMLSchema-instancexsi:schemaLocationhttp://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsdmodelVersion4.0.0/modelVersionparentgroupIdcom.atguigu.cloud/groupIdartifactIdmscloudV5/artifactIdversion1.0-SNAPSHOT/version/parentartifactIdcloud-consumer-order80/artifactIdpropertiesmaven.compiler.source17/maven.compiler.sourcemaven.compiler.target17/maven.compiler.targetproject.build.sourceEncodingUTF-8/project.build.sourceEncoding/propertiesdependencies!–web actuator–dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-web/artifactId/dependencydependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-actuator/artifactId/dependency!–lombok–dependencygroupIdorg.projectlombok/groupIdartifactIdlombok/artifactIdoptionaltrue/optional/dependency!–hutool-all–dependencygroupIdcn.hutool/groupIdartifactIdhutool-all/artifactId/dependency!–fastjson2–dependencygroupIdcom.alibaba.fastjson2/groupIdartifactIdfastjson2/artifactId/dependency!– swagger3 调用方式 http://你的主机IP地址:5555/swagger-ui/index.html –dependencygroupIdorg.springdoc/groupIdartifactIdspringdoc-openapi-starter-webmvc-ui/artifactId/dependency/dependenciesbuildpluginsplugingroupIdorg.springframework.boot/groupIdartifactIdspring-boot-maven-plugin/artifactId/plugin/plugins/build /project 写YML server:port: 80主启动(修改Main类名为Main80) package com.atguigu.cloud;import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication;/** auther zzyy* create 2023-11-04 15:19/ SpringBootApplication public class Main80 {public static void main(String[] args){SpringApplication.run(Main80.class,args);} } 业务类 entities 传递数值PayDTO package com.atguigu.cloud.entities;import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor;import java.io.Serializable; import java.math.BigDecimal;/** auther zzyy* create 2023-11-04 15:28** 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IDprivate Integer userId;//交易金额private BigDecimal amount; } ResultData统一返回值也从8001拷贝进来 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 RestTemplate 常用API使用说明使用说明使用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。 getForObject方法/getForEntity方法返回对象为响应体中数据转化成的对象基本上可以理解为Json 返回对象为ResponseEntity对象包含了响应中的一些重要信息比如响应头、响应状态码、响应体等 postForObject/postForEntity GET请求方法 T T getForObject(String url, ClassT responseType, Object… uriVariables);T T getForObject(String url, ClassT responseType, MapString, ? uriVariables);T T getForObject(URI url, ClassT responseType);T ResponseEntityT getForEntity(String url, ClassT responseType, Object… uriVariables);T ResponseEntityT getForEntity(String url, ClassT responseType, MapString, ? uriVariables);T ResponseEntityT getForEntity(URI var1, ClassT responseType);POST请求方法 T T postForObject(String url, Nullable Object request, ClassT responseType, Object… uriVariables);T T postForObject(String url, Nullable Object request, ClassT responseType, MapString, ? uriVariables);T T postForObject(URI url, Nullable Object request, ClassT responseType);T ResponseEntityT postForEntity(String url, Nullable Object request, ClassT responseType, Object… uriVariables);T ResponseEntityT postForEntity(String url, Nullable Object request, ClassT responseType, MapString, ? uriVariables);T ResponseEntityT postForEntity(URI url, Nullable Object request, ClassT responseType);config配置类 package com.atguigu.cloud.config;import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.web.client.RestTemplate;/** auther zzyy* create 2023-11-04 15:57/ Configuration public class RestTemplateConfig {Beanpublic RestTemplate restTemplate(){return new RestTemplate();} } controller package com.atguigu.cloud.controller;import com.atguigu.cloud.entities.PayDTO; import com.atguigu.cloud.resp.ResultData; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.; import org.springframework.web.client.RestTemplate;/*** auther zzyy* create 2023-11-04 16:00/ RestController public class OrderController{public static final String PaymentSrv_URL http://localhost:8001;//先写死硬编码Autowiredprivate RestTemplate restTemplate;/** 一般情况下通过浏览器的地址栏输入url发送的只能是get请求* 我们底层调用的是post方法模拟消费者发送get请求客户端消费者* 参数可以不添加RequestBody* param payDTO* return*/GetMapping(/consumer/pay/add)public ResultData addOrder(PayDTO payDTO){return restTemplate.postForObject(PaymentSrv_URL /pay/add,payDTO,ResultData.class);}// 删除修改操作作为家庭作业O(∩_∩)O。。。。。。。GetMapping(/consumer/pay/get/{id})public ResultData getPayInfo(PathVariable(id) Integer id){return restTemplate.getForObject(PaymentSrv_URL /pay/get/id, ResultData.class, id);} } Postman测试 http://localhost/consumer/pay/get/1 http://localhost/consumer/pay/addpayNo1213orderNo1213userId2amount3.33 作业删除修改操作工程重构观察问题—系统中有重复部分重构
新建Module 1.cloud-api-commons 2.对外暴露通用的组件/api/接口/工具类等改POM ?xml version1.0 encodingUTF-8? project xmlnshttp://maven.apache.org/POM/4.0.0xmlns:xsihttp://www.w3.org/2001/XMLSchema-instancexsi:schemaLocationhttp://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsdmodelVersion4.0.0/modelVersionparentgroupIdcom.atguigu.cloud/groupIdartifactIdmscloudV6/artifactIdversion1.0-SNAPSHOT/version/parentartifactIdcloud-api-commons/artifactIdpropertiesmaven.compiler.source17/maven.compiler.sourcemaven.compiler.target17/maven.compiler.targetproject.build.sourceEncodingUTF-8/project.build.sourceEncoding/propertiesdependencies!–SpringBoot通用依赖模块–dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-web/artifactId/dependencydependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-actuator/artifactId/dependencydependencygroupIdorg.projectlombok/groupIdartifactIdlombok/artifactIdoptionaltrue/optional/dependency!–hutool–dependencygroupIdcn.hutool/groupIdartifactIdhutool-all/artifactId/dependency/dependencies/projectentities PayDTO统一返回
全局异常类可加可不加酌情 maven命令clean install
订单80和支付8001分别改造删除各自的原先有过的entities和统一返回体等内容各自粘贴POM内容 !– 引入自己定义的api通用包 – dependencygroupIdcom.atguigu.cloud/groupIdartifactIdcloud-api-commons/artifactIdversion1.0-SNAPSHOT/version /dependency80 ?xml version1.0 encodingUTF-8? project xmlnshttp://maven.apache.org/POM/4.0.0xmlns:xsihttp://www.w3.org/2001/XMLSchema-instancexsi:schemaLocationhttp://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsdmodelVersion4.0.0/modelVersionparentgroupIdcom.atguigu.cloud/groupIdartifactIdmscloudV5/artifactIdversion1.0-SNAPSHOT/version/parentartifactIdcloud-consumer-order80/artifactIdpropertiesmaven.compiler.source17/maven.compiler.sourcemaven.compiler.target17/maven.compiler.targetproject.build.sourceEncodingUTF-8/project.build.sourceEncoding/propertiesdependencies!– 引入自己定义的api通用包 –dependencygroupIdcom.atguigu.cloud/groupIdartifactIdcloud-api-commons/artifactIdversion1.0-SNAPSHOT/version/dependency!–web actuator–dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-web/artifactId/dependencydependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-actuator/artifactId/dependency!–lombok–dependencygroupIdorg.projectlombok/groupIdartifactIdlombok/artifactIdoptionaltrue/optional/dependency!–hutool-all–dependencygroupIdcn.hutool/groupIdartifactIdhutool-all/artifactId/dependency!–fastjson2–dependencygroupIdcom.alibaba.fastjson2/groupIdartifactIdfastjson2/artifactId/dependency!– swagger3 调用方式 http://你的主机IP地址:5555/swagger-ui/index.html –dependencygroupIdorg.springdoc/groupIdartifactIdspringdoc-openapi-starter-webmvc-ui/artifactId/dependency/dependenciesbuildpluginsplugingroupIdorg.springframework.boot/groupIdartifactIdspring-boot-maven-plugin/artifactId/plugin/plugins/build /project8001 ?xml version1.0 encodingUTF-8? project xmlnshttp://maven.apache.org/POM/4.0.0xmlns:xsihttp://www.w3.org/2001/XMLSchema-instancexsi:schemaLocationhttp://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsdmodelVersion4.0.0/modelVersionparentgroupIdcom.atguigu.cloud/groupIdartifactIdmscloudV5/artifactIdversion1.0-SNAPSHOT/version/parentartifactIdcloud-provider-payment8001/artifactIdpropertiesmaven.compiler.source17/maven.compiler.sourcemaven.compiler.target17/maven.compiler.targetproject.build.sourceEncodingUTF-8/project.build.sourceEncoding/propertiesdependencies!– 引入自己定义的api通用包 –dependencygroupIdcom.atguigu.cloud/groupIdartifactIdcloud-api-commons/artifactIdversion1.0-SNAPSHOT/version/dependency!–SpringBoot通用依赖模块–dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-web/artifactId/dependencydependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-actuator/artifactId/dependency!–SpringBoot集成druid连接池–dependencygroupIdcom.alibaba/groupIdartifactIddruid-spring-boot-starter/artifactId/dependency!– Swagger3 调用方式 http://你的主机IP地址:5555/swagger-ui/index.html –dependencygroupIdorg.springdoc/groupIdartifactIdspringdoc-openapi-starter-webmvc-ui/artifactId/dependency!–mybatis和springboot整合–dependencygroupIdorg.mybatis.spring.boot/groupIdartifactIdmybatis-spring-boot-starter/artifactId/dependency!–Mysql数据库驱动8 –dependencygroupIdmysql/groupIdartifactIdmysql-connector-java/artifactId/dependency!–persistence–dependencygroupIdjavax.persistence/groupIdartifactIdpersistence-api/artifactId/dependency!–通用Mapper4–dependencygroupIdtk.mybatis/groupIdartifactIdmapper/artifactId/dependency!–hutool–dependencygroupIdcn.hutool/groupIdartifactIdhutool-all/artifactId/dependency!– fastjson2 –dependencygroupIdcom.alibaba.fastjson2/groupIdartifactIdfastjson2/artifactId/dependency!–lombok–dependencygroupIdorg.projectlombok/groupIdartifactIdlombok/artifactIdversion1.18.28/versionscopeprovided/scope/dependency!–test–dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-test/artifactIdscopetest/scope/dependency/dependenciesbuildpluginsplugingroupIdorg.springframework.boot/groupIdartifactIdspring-boot-maven-plugin/artifactId/plugin/plugins/build /projectpostman测试 http://localhost/consumer/pay/get/1 http://localhost/consumer/pay/add?payNo1213orderNo1213userId2amount3.33 作业删除修改操作目前工程样图截至到目前没有引入任何 SpringCloud 相关内容 7、为什么要引入微服务上一步controller问题硬编码写死问题微服务所在的IP地址和端口号硬编码到订单微服务中会存在非常多的问题 1如果订单微服务和支付微服务的IP地址或者端口号发生了变化则支付微服务将变得不可用需要同步修改订单微服务中调用支付微服务的IP地址和端口号。 2如果系统中提供了多个订单微服务和支付微服务则无法实现微服务的负载均衡功能。 3如果系统需要支持更高的并发需要部署更多的订单微服务和支付微服务硬编码订单微服务则后续的维护会变得异常复杂。所以在微服务开发的过程中需要引入服务治理功能实现微服务之间的动态注册与发现从此刻开始我们正式进入SpringCloud实战。