idea快速创建SpringCloud项目

╰+哭是因爲堅強的太久メ 2022-04-02 11:56 527阅读 0赞

IDE开发工具：IntelliJ IDEA 14.0.2

版本管理：Maven

技术栈：SpringCloud

环境：JDK 1.8

### 一、创建Maven项目 ###

1、File——>New Project ——>Maven 如图所示：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0ZvbGxvd18yNA_size_16_color_FFFFFF_t_70][] File——>New Project

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0ZvbGxvd18yNA_size_16_color_FFFFFF_t_70 1][]

2、填写模块名称和项目路径

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0ZvbGxvd18yNA_size_16_color_FFFFFF_t_70 2][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0ZvbGxvd18yNA_size_16_color_FFFFFF_t_70 3][]

按照以上步骤，就简单的创建了一个Maven项目。

此时项目还不是SpringBoot项目！！

### 二、把maven项目变成SpringBoot项目 ###

1、pom.xml引入需要的jar包

注意：按照各自项目实际情况；楼主是本项目由自己的maven私库

*  引入SpringBoot所需jar包
 *  引入SpringCloud所需jar包
 *  引入ereka服务注册发现客户端所需jar包
 *  引入mybatis-SpringCloud依赖jar包
 *  引入kafka 所需jar包
 *  引入redis 所需jar包
 *  引入配置中心Spring config 客户端依赖jar包

等等，按照各自项目所需。

<?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.**inks.e**s</groupId>
        <artifactId>msg</artifactId>
        <version>1.0-SNAPSHOT</version>
        <packaging>jar</packaging>
    
        <name>msg</name>
        <description>Demo project for Spring Boot</description>
    
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>1.5.6.RELEASE</version>
            <relativePath /> 
        </parent>
    
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
            <java.version>1.8</java.version>
            <tomcat.version>8.5.30</tomcat.version>
        </properties>
    
        <dependencies>
            
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-config</artifactId>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-actuator</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-eureka</artifactId>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-feign</artifactId>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.kafka</groupId>
                <artifactId>spring-kafka</artifactId>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-data-redis</artifactId>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
            
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>1.1.1</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-core</artifactId>
                <version>1.3.2</version>
            </dependency>
            <dependency>
                <groupId>com.epaylinks.efps</groupId>
                <artifactId>common</artifactId>
                <version>0.0.1-SNAPSHOT</version>
            </dependency>
            <dependency>
                <groupId>com.epaylinks.efps</groupId>
                <artifactId>logtracer</artifactId>
                <version>0.0.1-SNAPSHOT</version>
            </dependency>
    
            <dependency>
                <groupId>org.apache.commons</groupId>
                <artifactId>commons-math</artifactId>
                <version>2.2</version>
            </dependency>
            <dependency>
                <groupId>org.apache.httpcomponents</groupId>
                <artifactId>httpclient</artifactId>
                <version>4.5.3</version>
            </dependency>
            <dependency>
                <groupId>org.apache.httpcomponents</groupId>
                <artifactId>httpasyncclient</artifactId>
                <version>4.1.1</version>
            </dependency>
            <dependency>
                <groupId>io.github.openfeign.form</groupId>
                <artifactId>feign-form-spring</artifactId>
                <version>3.2.2</version>
            </dependency>
            <dependency>
                <groupId>io.github.openfeign.form</groupId>
                <artifactId>feign-form</artifactId>
                <version>3.2.2</version>
            </dependency>
        </dependencies>
        <dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>Dalston.SR2</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
            </dependencies>
        </dependencyManagement>
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
                <plugin>
                    <groupId>org.mybatis.generator</groupId>
                    <artifactId>mybatis-generator-maven-plugin</artifactId>
                    <version>1.3.2</version>
                    <configuration>
                        <configurationFile>src/main/resources/generatorConfig-mch.xml</configurationFile>
                        <verbose>true</verbose>
                        <overwrite>true</overwrite>
                    </configuration>
                    <dependencies>
                        <dependency>
                            <groupId>com.oracle</groupId>
                            <artifactId>ojdbc6</artifactId>
                            <version>11.1.0.7.0</version>
                        </dependency>
                        <dependency>
                            <groupId>org.mybatis.generator</groupId>
                            <artifactId>mybatis-generator-core</artifactId>
                            <version>1.3.2</version>
                        </dependency>
                    </dependencies>
                </plugin>
            </plugins>
        </build>
    </project>

2、创建SpringCloud项目主入口类\*\*Application

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0ZvbGxvd18yNA_size_16_color_FFFFFF_t_70 4][]

package com.**s.**s;
    
    import com.**ks.e**.common.util.SpringContextUtils;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.boot.web.client.RestTemplateBuilder;
    import org.springframework.cloud.context.config.annotation.RefreshScope;
    import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
    import org.springframework.cloud.netflix.feign.EnableFeignClients;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.EnableAspectJAutoProxy;
    import org.springframework.kafka.annotation.EnableKafka;
    import org.springframework.scheduling.annotation.EnableScheduling;
    import org.springframework.web.client.RestTemplate;
    
    @RefreshScope
    @EnableEurekaClient
    @EnableFeignClients
    @EnableKafka
    @EnableScheduling
    @EnableAspectJAutoProxy(proxyTargetClass=true , exposeProxy=true)
    @SpringBootApplication
    public class MsgApplication {
    	// 启动的时候要注意，由于我们在controller中注入了RestTemplate，所以启动的时候需要实例化该类的一个实例
        @Autowired
        private RestTemplateBuilder builder;
    
            // 使用RestTemplateBuilder来实例化RestTemplate对象，spring默认已经注入了RestTemplateBuilder实例
        @Bean
        public RestTemplate restTemplate() {
            return builder.build();
        }
    
        public static void main(String[] args) {
        	SpringApplication springApplication = new SpringApplication(MsgApplication.class);
            SpringContextUtils.setApplicationContext(springApplication.run(args));
        }
    }

@SpringBootApplication  这个标注就表示，这个项目是SpringBoot项目，并且此类是项目的主入口类。

由以下main方法启动Application

public static void main(String[] args) {
        	SpringApplication springApplication = new SpringApplication(MsgApplication.class);
            SpringContextUtils.setApplicationContext(springApplication.run(args));
        }

到这里，SpringBoot项目已经完成一大半。接下来就是数据库连接配置以及注册中心config和Ereka等配置文件的配置了

### 三、注册中心和服务发现配置等 ###

1、Spring Config Center配置项目的配置文件读取

楼主这里是以Spring Config Center作为配置中心来，配置读取项目所需的各种连接和配置信息等（Spring Config Center这里不作详细介绍）

2、GitLab远程托管配置信息

在Spring Config Center配置服务中心配置好了项目的连接和读取权限后，在gitlab上配置本项目的各种所需信息

这里详见另一篇文章

[SpringCloud项目采用gitLab作为配置中心][SpringCloud_gitLab]

3、项目中加载各环境下对应的配置文件信息（dev、test、prod、uat）

这里以dev开发环境为例

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0ZvbGxvd18yNA_size_16_color_FFFFFF_t_70 5][] 按照图标顺序依次加载

所有SpringCloud项目均是从bootstrap.yml文件开始加载项目所需的各种连接和配置信息的，这是SpringCloud核心内置决定，可以去研究源码，这里不作详述。

4、bootstrap-dev.yml的配置如：

spring:
      application:
        name: msg
      cloud:
        config:
          uri: http://172.20*.4*.80:9000/   # 配置spring cloud config服务端的url
          profile: dev                      # 指定profile
          label: master                     # 指定gitlab仓库的分支

主要是连接spring cloud config服务端，以获取远程gitlab上的配置信息。

5、application-dev.yml的配置如下：

eureka:
      client:
        registerWithEureka: true
        service-url:
          defaultZone: http://172.20.4.80:8000/eureka/
    swagger:
      enable: true

主要用来连接eureka服务注册和发现

到这里，SpringCLoud项目基本已经完成。接下来就是各种数据库建表Mybatis配置和撸代码的工作了。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0ZvbGxvd18yNA_size_16_color_FFFFFF_t_70 6][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0ZvbGxvd18yNA_size_16_color_FFFFFF_t_70 7][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0ZvbGxvd18yNA_size_16_color_FFFFFF_t_70 8][] 同名原创公众号： **程序大视界**

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[SpringCloud_gitLab]: https://blog.csdn.net/xuri24/article/details/84657679
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