Java微服务-新建demo

xingsfdz2025-06-22 22:49

一、整体架构

1.功能模块 如下，简洁明了

复制代码 
                  Client (前端、App、小程序)
                           |
                       Gateway
                (统一入口，流量网关、鉴权)
                           |
        ------------------------------------
        |           |            |         
   auth-service  user-service  order-service
     (认证)         (用户)         (订单)
                           |
                        common
               (通用工具库被引用)

代码结构：

模块介绍：

模块 归属层级 是否同级 主要作用 备注
gateway-service 网关层 ------ 统一入口、安全网关 负责全局转发和认证
auth-service 业务微服务层 ✅ 认证中心 登录、发放token
user-service 业务微服务层 ✅ 用户中心 管理用户信息
order-service 业务微服务层 ✅ 订单中心 管理订单流程
common 通用支撑层 被所有业务微服务引用 通用工具 只提供工具支持

二、IDEA创建

1.创建项目（项目和模块填写好包名 最好统一包名）

2.创建模块（创建好项目后，接着在项目名上面右键-创建模块）

三、具体代码(已经调试完bug，踩完坑，可以运行的版本)

父工程

pom.xml

复制代码 
<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.xbc</groupId>
    <artifactId>xbcms-api</artifactId>
    <version>1.0.0</version>
    <packaging>pom</packaging>
    <name>xbcms-api 微服务父工程</name>

    <!-- 全局属性 -->
    <properties>
        <java.version>1.8</java.version>
        <spring.boot.version>2.7.15</spring.boot.version>
        <spring.cloud.version>2021.0.8</spring.cloud.version>
        <spring.cloud.alibaba.version>2021.0.4.0</spring.cloud.alibaba.version>
        <mybatis.plus.version>3.5.3.1</mybatis.plus.version>
        <knife4j.version>3.0.3</knife4j.version>
        <jjwt.version>0.9.1</jjwt.version>
        <springdoc.version>1.6.14</springdoc.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <mysql.version>8.0.33</mysql.version>
    </properties>

    <!-- 子模块声明 -->
    <modules>
        <module>common</module>
        <module>gateway</module>
        <module>user-service</module>
        <module>order-service</module>
        <module>auth</module>
    </modules>

    <!-- 统一依赖管理 -->
    <dependencyManagement>
        <dependencies>
            <!-- Spring Boot BOM -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${spring.boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <!-- Spring Cloud BOM -->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring.cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <!-- Spring Cloud Alibaba BOM -->
            <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>

            <dependency>
                <groupId>com.alibaba.nacos</groupId>
                <artifactId>nacos-client</artifactId>
                <version>2.3.2</version> <!-- 当前非常稳定 -->
            </dependency>

        </dependencies>
    </dependencyManagement>

    <!-- 公共依赖（所有子模块自动继承） -->
    <dependencies>

        <!-- Lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.30</version>
            <scope>provided</scope>
        </dependency>

    </dependencies>

    <!-- 插件配置 -->
    <build>
        <plugins>

            <!-- 编译器插件 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>

        </plugins>
    </build>

</project>

common模块

pom.xml

复制代码 
<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.xbc</groupId>
        <artifactId>xbcms-api</artifactId>
        <version>1.0.0</version>
    </parent>

    <artifactId>common</artifactId>
    <name>common</name>

    <dependencies>

        <!-- Lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

        <!-- commons-lang3 -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
        </dependency>

        <!-- JWT -->
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt</artifactId>
            <version>${jjwt.version}</version>
        </dependency>

        <!-- Fastjson2 -->
        <dependency>
            <groupId>com.alibaba.fastjson2</groupId>
            <artifactId>fastjson2</artifactId>
            <version>2.0.42</version>
        </dependency>

        <!-- Redis -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>

        <!-- Spring Web (工具模块也可使用) -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

    </dependencies>
</project>

gateway模块

pom.xml

复制代码 
<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.xbc</groupId>
        <artifactId>xbcms-api</artifactId>
        <version>1.0.0</version>
    </parent>

    <artifactId>gateway</artifactId>
    <name>gateway</name>

    <dependencies>

        <!-- Spring Cloud Gateway (核心依赖，无需引入spring-boot-starter-web) -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
        </dependency>

        <!-- Nacos 服务发现 -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-loadbalancer</artifactId>
        </dependency>

        <!-- Lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <scope>provided</scope>
        </dependency>

        <!-- JWT -->
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt</artifactId>
            <version>${jjwt.version}</version>
        </dependency>

        <!-- 公共模块 -->
        <dependency>
            <groupId>com.xbc</groupId>
            <artifactId>common</artifactId>
            <version>1.0.0</version>
        </dependency>

    </dependencies>

</project>

配置文件：

复制代码 
server:
  port: 8080

spring:
  application:
    name: gateway-service
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848  # 改成真实IP
    gateway:
      routes:
        - id: auth-service
          uri: lb://auth-service
          predicates:
            - Path=/auth/**
        - id: user-service
          uri: lb://user-service
          predicates:
            - Path=/user/**
        - id: order-service
          uri: lb://order-service
          predicates:
            - Path=/order/**


  main:
    web-application-type: reactive # 防止启动失败 需要去掉默认的web

# 日志
logging:
  level:
    com.xbc: debug

auth模块

pom.xml

复制代码 
<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.xbc</groupId>
        <artifactId>xbcms-api</artifactId>
        <version>1.0.0</version>
    </parent>

    <artifactId>auth</artifactId>
    <name>auth</name>

    <dependencies>

        <!-- Web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!-- Nacos -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

        <!-- MyBatis Plus -->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>${mybatis.plus.version}</version>
        </dependency>

        <!-- MySQL 驱动 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.version}</version>
        </dependency>

        <!-- JWT -->
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt</artifactId>
            <version>${jjwt.version}</version>
        </dependency>

        <!-- 引入 common 模块 -->
        <dependency>
            <groupId>com.xbc</groupId>
            <artifactId>common</artifactId>
            <version>1.0.0</version>
        </dependency>

    </dependencies>

</project>

配置：

复制代码 
server:
  port: 8081

spring:
  application:
    name: auth-service

  datasource:
    url: 
    username: 
    password: 
    driver-class-name: com.mysql.cj.jdbc.Driver

  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848

mybatis-plus:
  global-config:
    db-config:
      id-type: auto
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

user模块

pom.xml

复制代码 
<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.xbc</groupId>
        <artifactId>xbcms-api</artifactId>
        <version>1.0.0</version>
    </parent>

    <artifactId>user-service</artifactId>
    <name>user-service</name>

    <dependencies>

        <!-- Web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!-- Nacos -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

        <!-- OpenFeign -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>

        <!-- MyBatis Plus -->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>${mybatis.plus.version}</version>
        </dependency>

        <!-- MySQL 驱动 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.version}</version>
        </dependency>

        <!-- JWT -->
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt</artifactId>
            <version>${jjwt.version}</version>
        </dependency>

        <!-- 引入 common 模块 -->
        <dependency>
            <groupId>com.xbc</groupId>
            <artifactId>common</artifactId>
            <version>1.0.0</version>
        </dependency>

    </dependencies>

</project>

配置文件：

复制代码 
server:
  port: 8082

spring:
  application:
    name: user-service

  datasource:
    url: 
    username: 
    password: 
    driver-class-name: com.mysql.cj.jdbc.Driver

  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848   #

# feign日志级别 (后续用到)
logging:
  level:
    com.xbc: debug

mybatis-plus:
  global-config:
    db-config:
      id-type: auto
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

order模块

pom.xml

复制代码 
<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.xbc</groupId>
        <artifactId>xbcms-api</artifactId>
        <version>1.0.0</version>
    </parent>

    <artifactId>order-service</artifactId>
    <name>order-service</name>

    <dependencies>

        <!-- Web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!-- Nacos -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

        <!-- OpenFeign -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-loadbalancer</artifactId>
        </dependency>

        <!-- JWT -->
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt</artifactId>
            <version>${jjwt.version}</version>
        </dependency>

        <!-- 引入 common 模块 -->
        <dependency>
            <groupId>com.xbc</groupId>
            <artifactId>common</artifactId>
            <version>1.0.0</version>
        </dependency>

    </dependencies>

</project>

配置文件：

复制代码 
server:
  port: 8083

spring:
  application:
    name: order-service

  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848

feign:
  client:
    config:
      default:
        connectTimeout: 5000
        readTimeout: 10000

logging:
  level:
    com.xbc: debug

四、安装运行

1.安装mysql（自行安装）

2.安装nacos

复制代码 
  spring.datasource.platform=mysql
  spring.sql.init.platform=mysql

  ### Count of DB:
  db.num=1
  • b.新建数据库，导入mysql的相关表到你的库，脚本位置：\nacos\conf\mysql-schema.sql

五、运行测试

访问网关，然后转发得到结果

最后：需要源码私信

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