一、idea+gradle搭建springcloud项目流程

拼搏现实的明天。 2023-07-17 15:52 28阅读 0赞

说明：采用idea2019.3.1 gradle有可能会报错，将idea升级到2019.3.4就好了

exception during working with external system: java.lang.AssertionError 
    at org.jetbrains.plugins.gradle.service.project.BaseGradleProjectResolverExtension.createModule(BaseGradleProjectResolverExtension.java:154) 
     ......

一、创建根项目

1、先创建一个空的gradle项目

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTk5NjYzMg_size_16_color_FFFFFF_t_70][]

创建完成后

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTk5NjYzMg_size_16_color_FFFFFF_t_70 1][]

2、先看创建的gradle版本

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTk5NjYzMg_size_16_color_FFFFFF_t_70 2][]

3、在本地配置号gradle,将idea的gradle配置改为本地

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTk5NjYzMg_size_16_color_FFFFFF_t_70 3][]

4、修改build.gradle，注意springcloud的版本需要和springboot版本对应,具体版本可百度，这里提供一个连接[https://www.cnblogs.com/zhuwenjoyce/p/10261079.html][https_www.cnblogs.com_zhuwenjoyce_p_10261079.html]

如果不确定springboot版本，可以先创建一个springboot项目，看一下springboot版本然后修改为idea自动创建的版本即可，springcloud根据springboot版本进行修改即可，注意如果不用java1.8也要修改

buildscript {
        ext {
            springBootVersion = '2.2.5.RELEASE'
            springCloudVersion = 'Hoxton.SR1'
        }
        repositories {
            mavenLocal()
            maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' }
            mavenCentral()
        }
        dependencies {
            classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
        }
    }
    allprojects {
        group 'com.qpf'
        version '1.0-SNAPSHOT'
        apply plugin: 'java'
        // 指定JDK版本
        sourceCompatibility = 1.8
        targetCompatibility = 1.8
        //指定编码格式
        tasks.withType(JavaCompile) {
            options.encoding = "UTF-8"
        }
    
        repositories {
            mavenLocal()
            maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' }
            mavenCentral()
        }
    }
    
    subprojects {
        //dependency-management 插件
        apply plugin: 'io.spring.dependency-management'
        dependencyManagement {
            imports {
                //spring bom helps us to declare dependencies without specifying version numbers.
                mavenBom "org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}"
                mavenBom "org.springframework.boot:spring-boot-dependencies:${springBootVersion}"
            }
        }
        jar {
            manifest.attributes provider: 'gradle'
        }
    }

5、添加.gitignore文件，根据需要自己修改内容即可，若idea中没有该插件，自己添加一个，不往git上提交的可以忽略此步

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTk5NjYzMg_size_16_color_FFFFFF_t_70 4][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTk5NjYzMg_size_16_color_FFFFFF_t_70 5][]

三、创建子模块

1、使用spingboot创建子模块consul

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTk5NjYzMg_size_16_color_FFFFFF_t_70 6][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTk5NjYzMg_size_16_color_FFFFFF_t_70 7][]

一样需要是gradle

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTk5NjYzMg_size_16_color_FFFFFF_t_70 8][] ![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTk5NjYzMg_size_16_color_FFFFFF_t_70 9][]

此时gradle编译报错，先不用管

exception during working with external system: java.lang.AssertionError
    ....

2、检查子模块有没有添加到settings.gradle中，若没有手动添加

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTk5NjYzMg_size_16_color_FFFFFF_t_70 10][]

3、处理：将子模块下的build.gradle文件中除了dependencies中的内容之外全部删除，添加

apply plugin: 'org.springframework.boot'

最终

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTk5NjYzMg_size_16_color_FFFFFF_t_70 11][]

apply plugin: 'org.springframework.boot'
    dependencies {
        implementation 'org.springframework.boot:spring-boot-starter-actuator'
        implementation 'org.springframework.boot:spring-boot-starter-web'
        implementation 'org.springframework.cloud:spring-cloud-starter-consul-discovery'
        testImplementation('org.springframework.boot:spring-boot-starter-test') {
            exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
        }
    }

注意修改依赖为：

implementation 'org.springframework.cloud:spring-cloud-starter-consul-discovery'

发现报错，按照第五小步处理

4、删除子模块下多余文件,只留下src文件夹和settings.gradle,图片中build文件夹是编译文件不用管

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTk5NjYzMg_size_16_color_FFFFFF_t_70 12][]

5、如果编译出错则

取消Offline Model，点击gradle中的Toggle Offline Model,然后重新编译

![20200323101242550.png][]

6、配置consul子模块的配置文件，这里我将 application.properties修改为application.yml进行配置

server:
      port: 8081
    
    spring:
      application:
        name: demo-server
      cloud:
        consul:
          host: localhost
          port: 8500
          discovery:
            service-name: service-producer

7、windows启动consul服务

8、启动类上添加@EnableDiscoveryClient支持服务发现

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTk5NjYzMg_size_16_color_FFFFFF_t_70 13][]

启动项目查看，若启动项目有问题，查看windows是否启动了consul,若没有则可查看启动consul方法：[https://blog.csdn.net/weixin\_41996632/article/details/105047732][https_blog.csdn.net_weixin_41996632_article_details_105047732]

9、创建class文件，文件中写入注解，检查jdk包是否能够正常引入

四、 和模块consul一样创建zuul模块

1、build.gradle

apply plugin: 'org.springframework.boot'
    dependencies {
        implementation 'org.springframework.boot:spring-boot-starter-web'
        // 健康检查依赖于此包
        implementation 'org.springframework.boot:spring-boot-starter-actuator'
        // Spring Cloud Consul 的支持
        implementation 'org.springframework.cloud:spring-cloud-starter-consul-discovery'
        implementation 'org.springframework.cloud:spring-cloud-starter-netflix-hystrix'
        implementation 'org.springframework.cloud:spring-cloud-starter-netflix-ribbon'
        implementation 'org.springframework.cloud:spring-cloud-starter-netflix-zuul'
        implementation 'org.springframework.cloud:spring-cloud-starter-openfeign'
        testImplementation('org.springframework.boot:spring-boot-starter-test') {
            exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
        }
    }

2、application.yml

server:
      port: 8082
    
    spring:
      application:
        name: demo-zuul
      cloud:
        consul:
          host: localhost
          port: 8500
          discovery:
            service-name: service-producer

3、启动类添加@EnableDiscoveryClient

4、settings.gradle添加include('demo-zuul')

5、删除多余的文件

最终启动如下图

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTk5NjYzMg_size_16_color_FFFFFF_t_70 14][]

consul服务查看如下

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTk5NjYzMg_size_16_color_FFFFFF_t_70 15][]

说明：删除模块时不要直接删文件，需要从项目中移除然后删除File->Project Structure...

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTk5NjYzMg_size_16_color_FFFFFF_t_70 16][]

然后删除根项目settings.gradle中的include('eureka'),最后从项目中删除子模块文件即可

提示：若不想修改gradle本地文件编译，则不用删除子模块中gradle文件夹就可以(推荐此方法)

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[https_www.cnblogs.com_zhuwenjoyce_p_10261079.html]: https://www.cnblogs.com/zhuwenjoyce/p/10261079.html
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[20200323101242550.png]: /images/20230528/a616d143fbc847c58cb8226580ef7b44.png
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[https_blog.csdn.net_weixin_41996632_article_details_105047732]: https://blog.csdn.net/weixin_41996632/article/details/105047732
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