Jhipster 创建微服务详细教程

墨蓝 2022-05-17 12:21 482阅读 0赞

## 一、简介 ##

jHipster 集成了springcloud的注册中心（eureka server）和配置中心（config server），eureka server 能够将我们自己开发的微服务（Microservices）都纳入到它自身当中，config server 能够集中管理应用程序各个环境下的配置，默认使用git 仓库存储配置内容。  
Microservices没有前端页面，前端页面由网关产生（gateway），权限控制可以通过UAA进行管理，并且要在JHipster Registry中注册、发现和管理。

**`JHipster Registry`**是微服架构必不可少的。它把所有的组件连接在一起，使他们能够互相通信。  
**`Microservices`** 它只有后台代码。它更注重的是在API上。一个微服结构可以有许多微服应用，每个包含几个相关的实体和业务规则。  
**`Gateway`** 它为所有微服务提供了HTTP路由和负载均衡，服务质量，安全和API文档。  
`UAA`是一个使用OAuth2认证协议、为JHipster微服务提供用户账户和授权的服务。

![microservices_architecture_detail.002.png][]

## 二、微服务安装 ##

### 1、安装JHipster Registry ###

JHipster Registry 是一个标准的jhipster，我们只需要克隆下来运行它即可。没有必要打开idea或者修改它：

**（1）第一种方式**

git clone https://github.com/jhipster/jhipster-registry
    #cd到jhipster-registry文件夹，运行
    mvnw

执行mvnw命令后，系统将自动编译运行。

**（2）第二种方式**

git clone https://github.com/jhipster/jhipster-registry.git
    # 编译启动
    mvn clean package
    java -jar target/jhipster-registry-*.war

打开http://localhost:8761/，并且登录，默认账户admin，密码admin。

Instances Registered是自动注册的服务，当我们创建服务后，将自动注册到这里

![TIM_E6_88_AA_E5_9B_BE20180808152545.jpg][]

### **2、安装**uaa ###

部署完jHipster registry ，我们需要创建一个用于控制访问权限的项目。

#创建文件夹存放项目
 mkdir uaa
 #切换到文件夹
 cd uaa
 #创建UAA服务
 yo jhipster
 #仅供参考
 ? (1/14) Which *type* of application would you like to create? [BETA] JHipster UAA server (for microservice OAuth2 authentication)
 ? (2/14) What is the base name of your application? uaa
 ? (3/14) Would you like to install other generators from the JHipster Market Place? No
 ? (3/14) As you are running in a microservice architecture, on which port would like your server to run? It should be unique to avoid port conflicts. 9999
 ? (4/14) What is your default Java package name? cn.jhipter.uaa
 ? (5/14) Which Service Discovery and Configuration solution would you like to use? JHipster Registry (using Eureka and Spring Cloud Config)
 ? (6/14) Which *type* of database would you like to use? SQL (H2, MySQL, MariaDB, PostgreSQL, Oracle, MSSQL)
 ? (7/14) Which *production* database would you like to use? MySQL
 ? (8/14) Which *development* database would you like to use? MySQL
 ? (9/14) Do you want to use Hibernate 2nd level cache? Yes, with HazelCast (distributed cache, for multiple nodes)
 ? (10/14) Would you like to use Maven or Gradle for building the backend? Maven
 ? (11/14) Which other technologies would you like to use? (Press <space> to select, <a> to toggle all, to inverse selection)
 ? (12/14) Would you like to enable internationalization support? Yes
 #国际化支持，选择简体中文
 ? Please choose the native language of the application? Chinese (Simplified)
 ? Please choose additional languages to install (Press <space> to select, <a> to toggle all, to inverse selection)
 ? (13/14) Which testing frameworks would you like to use? (Press <space> to select, <a> to toggle all, to inverse selection)Gatling

通过**`mvnw`**编译启动项目

### 3、创建一个Microservices Application(微服务) ###

操作同**uaa**

#创建文件夹存放项目
 mkdir app
 #切换到文件夹
 cd app
 #创建微服务
 yo jhipster
 #仅供参考
 ? (1/14) Which *type* of application would you like to create? Microservice application
 ? (2/14) What is the base name of your application? app
 ? (3/14) Would you like to install other generators from the JHipster Market Place? No
 ? (3/14) As you are running in a microservice architecture, on which port would like your server to run? It should be unique to avoid port conflicts. 8081
 ? (4/14) What is your default Java package name? cn.jhipster.app
 ? (5/14) Which *type* of authentication would you like to use? [BETA] Authentication with JHipster UAA server (the server must be generated separately)
 ? (6/14) What is the folder path of your UAA application?. ../uaa
 ? (7/14) Which Service Discovery and Configuration solution would you like to use? JHipster Registry (using Eureka and Spring Cloud Config)
 ? (8/14) Which *type* of database would you like to use? SQL (H2, MySQL, MariaDB, PostgreSQL, Oracle)
 ? (9/14) Which *production* database would you like to use? MySQL
 #可以选择默认的H2，会在磁盘或者内存中生成本地数据库，就要就不需要我们修改配置文件了
 ? (10/14) Which *development* database would you like to use? MySQL
 ? (11/14) Do you want to use Hibernate 2nd level cache? Yes, with HazelCast (distributed cache, for multiple nodes)
 ? (12/14) Would you like to use Maven or Gradle for building the backend? Maven
 ? (13/14) Which other technologies would you like to use? (Press <space> to select, <a> to toggle all, to inverse selection)
 ? (14/14) Would you like to enable internationalization support? Yes
 ? Please choose the native language of the application? Chinese (Simplified)
 ? Please choose additional languages to install (Press <space> to select, <a> to toggle all, to inverse selection)
 ? (15/14) Which testing frameworks would you like to use? (Press <space> to select, <a> to toggle all, to inverse selection)Gatling

同样还需要修改数据库配置**`\src\main\resources\config\application-dev.yml`**，在application.yml中可以看到，系统已经自动帮我们注册了

![TIM_E6_88_AA_E5_9B_BE20180808154254.jpg][]

启动项目（参考uaa）

### 4、创建一个网关 ###

创建一个网关，用来做为所有请求的入口

#创建文件夹存放项目
 mkdir gateway
 #切换到文件夹
 cd gateway
 #创建微服务网关
 yo jhipster
 #仅供参考
 ? (1/14) Which *type* of application would you like to create? Microservice gateway
 ? (2/14) What is the base name of your application? gateway
 ? (3/14) Would you like to install other generators from the JHipster Market Place? No
 ? (3/14) As you are running in a microservice architecture, on which port would like your server to run? It should be unique to avoid port conflicts. 8080
 ? (4/14) What is your default Java package name? cn.jhipster.gateway
 ? (5/14) Which *type* of authentication would you like to use? [BETA] Authentication with JHipster UAA server (the server must be generated separately)
 ? (6/14) What is the folder path of your UAA application?. ../uaa
 ? (7/14) Which Service Discovery and Configuration solution would you like to use? JHipster Registry (using Eureka and Spring Cloud Config)
 ? (8/14) Which *type* of database would you like to use? SQL (H2, MySQL, MariaDB, PostgreSQL, Oracle, MSSQL)
 ? (9/14) Which *production* database would you like to use? MySQL
 ? (10/14) Which *development* database would you like to use? MySQL
 ? (11/14) Do you want to use Hibernate 2nd level cache? Yes, with HazelCast (distributed cache, for multiple nodes)
 ? (12/14) Would you like to use Maven or Gradle for building the backend? Maven
 ? (13/14) Which other technologies would you like to use? (Press <space> to select, <a> to toggle all, to inverse selection)
 ? (14/14) Would you like to use the LibSass stylesheet preprocessor for your CSS? No
 ? (15/14) Would you like to enable internationalization support? Yes
 ? Please choose the native language of the application? Chinese (Simplified)
 ? Please choose additional languages to install (Press <space> to select, <a> to toggle all, to inverse selection)
 ? (16/14) Which testing frameworks would you like to use? (Press <space> to select, <a> to toggle all, to inverse selection)Gatling

同样需要修改数据库配置并启动项目

![1-3.jpg][]

打开**http://localhost:8761**，就可以查看到我们创建的服务。

将它和网关服务进行对比，可以看出网关页面管理里面多了些菜单。

**原地址**：[https://www.zhengjie.me/blog/478.html][https_www.zhengjie.me_blog_478.html]

**软件推荐**：

由于创建都是敲命令实现的，而系统原生的cmd使用起来并不怎么友好，可以使用cmder这款软件进行操作。`cmder`是一个跨平台的命令行增强工具,可以集成windows batch, power shell, git, linux bash等多种命令行于一体,使用起来还是十分方便的

**相关介绍：**

[美化cmd，Windows神器推荐Cmder][cmd_Windows_Cmder]

[microservices_architecture_detail.002.png]: https://www.zhengjie.me/wp-content/uploads/2018/08/microservices_architecture_detail.002.png
[TIM_E6_88_AA_E5_9B_BE20180808152545.jpg]: https://www.zhengjie.me/wp-content/uploads/2018/08/TIM%E6%88%AA%E5%9B%BE20180808152545.jpg
[TIM_E6_88_AA_E5_9B_BE20180808154254.jpg]: https://www.zhengjie.me/wp-content/uploads/2018/08/TIM%E6%88%AA%E5%9B%BE20180808154254.jpg
[1-3.jpg]: https://www.zhengjie.me/wp-content/uploads/2018/08/1-3.jpg
[https_www.zhengjie.me_blog_478.html]: https://www.zhengjie.me/blog/478.html
[cmd_Windows_Cmder]: https://www.zhengjie.me/blog/465.html