User service of spring cloud Alibaba

ityml 2020-11-09 15:17:57
user service spring cloud alibaba


Project technology selection

Project structure

pom file

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.9.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.laiya</groupId>
<artifactId>user-center</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>user-center</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<!--Sporing Boot-->
<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>
<!--feign-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
<dependency>
<groupId>io.github.openfeign</groupId>
<artifactId>feign-httpclient</artifactId>
</dependency>
<!-- nacos Dynamic configuration -->
<!-- <dependency>-->
<!-- <groupId>com.alibaba.cloud</groupId>-->
<!-- <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>-->
<!-- </dependency>-->
<!--Redis-->
<!-- <dependency>-->
<!-- <groupId>org.springframework.boot</groupId>-->
<!-- <artifactId>spring-boot-starter-data-redis-reactive</artifactId>-->
<!-- </dependency>-->
<!--Mysql-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!--Mybatis-->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.1.2</version>
</dependency>
<!--Lombok-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-websocket</artifactId>
</dependency>
<!--Test-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-websocket</artifactId>
<version>5.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-zipkin</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-sentinel</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<!-- Integrate Spring Cloud-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Greenwich.SR3</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<!-- Integrate Spring Cloud Alibaba-->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>2.1.0.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<!-- Set up development separately , test , Production environment -->
<profiles>
<!-- development environment -->
<profile>
<id>dev</id>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
<properties>
<environment>dev</environment>
</properties>
</profile>
<!-- Test environment -->
<profile>
<id>test</id>
<activation>
<activeByDefault>false</activeByDefault>
</activation>
<properties>
<environment>test</environment>
</properties>
</profile>
<!-- Production environment -->
<profile>
<id>pro</id>
<activation>
<activeByDefault>false</activeByDefault>
</activation>
<properties>
<environment>pro</environment>
</properties>
</profile>
</profiles>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.16</version>
</dependency>
</dependencies>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>8</source>
<target>8</target>
</configuration>
</plugin>
</plugins>
<!-- Package file name : Project name - Environmental Science - edition -->
<finalName>${project.artifactId}-${environment}-${project.version}</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<!-- Turn on the filter replacement function -->
<filtering>true</filtering>
<includes>
<!-- Only the current environment files are included in the package -->
<include>application.yml</include>
<include>application-${environment}.yml</include>
<include>bootstrap.yml</include>
<include>mybatis/*/*.xml</include>
<include>templates/*.html</include>
<include>static/</include>
</includes>
</resource>
</resources>
</build>
</project>

pom It is equipped with multi environment packaging ,openfeign,zipkin,actuator,sentinel,websocket,lombok Wait for the components below

  • openfeign It is used to provide a solution for the call between services in microservice architecture , It can be understood as a encapsulated request pattern .
  • zipkin It's a tool for link tracking , Is an open source distributed tracking system , Every service to zipkin Report timing data ,zipkin According to the calling relationship Zipkin UI Generate dependency graph ( In the future blog will be )
  • actuator It's a health check for applications ,Spring Boot Actuator Can help you monitor and manage Spring Boot application , For example, physical examination 、 Audit 、 Statistics and HTTP Tracking, etc . All of these features can be achieved by JMX perhaps HTTP endpoints To obtain a .
  • sentinel It is a highly available traffic protection component for distributed service architecture , The main pointcut is traffic , From current limiting 、 Traffic shaping 、 Fusing the drop 、 System load protection 、 Hot spot protection and other dimensions help developers ensure the stability of microservices .
  • websocket Full duplex protocol , It can be simply understood that the server can actively send requests to the client

To implement multi environment packaging, you need to configure multiple *.yml The configuration file , The configuration file

  • application.yml Content
spring:
profiles:
active: "@environment@"

application-dev Content

#======================================#
#========== Server settings ==========#
#======================================#
server:
port: 8086
# servlet:
# context-path: /user-center
tomcat:
uri-encoding: UTF-8
spring:
#server name
application:
name: user-center
#======================================#
#========== Database settings ==========#
#======================================#
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
username:
password: xxxxx
url: jxxxxx
#======================================#
#========== Nacos ==========#
#======================================#
cloud:
nacos:
discovery:
# nacos server address
server-addr: xxxx
thymeleaf:
prefix: classpath:/templates/
check-template-location: true
suffix: .html
encoding: utf-8
servlet:
content-type: text/html
mode: HTML5
cache: false
#======================================#
#========== zipkin ==========#
#======================================#
zipkin:
base-url:xxx
discovery-client-enabled: false
sleuth:
sampler:
# Sampling rate 10%
probability: 1.0
#======================================#
#========== MyBatis settings ==========#
#======================================#
mybatis:
mapper-locations: classpath:templates/*/*.xml
#======================================#
#========== Redis settings ==========#
#======================================#
# redis:
# enabled: true
# host: xxx
# port: 6379
# ssl: false
# database: 0
# password: x'x'x'x
# jedis:
# pool:
# # Maximum number of free connections
# maxIdle: 3
# # Maximum number of active connections
# maxActive: 20
feign:
client:
config:
# Microservices you want to configure name Global configuration default
user-center:
loggerLevel: full
# httpclient Connection pool
httpclient:
enabled: true
# feign Is the maximum number of connections
max-connections: 200
# feign The maximum number of connections per path
max-connections-per-route: 50
#======================================#
#========== Config sttings ==========#
#======================================#
#
body:
controllerMethodList:
swaggerResources,
getDocumentation
management:
endpoints:
web:
exposure:
include: '*'

mysql Configuration information description

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

mysql edition >= 6.x Need to use com.mysql.cj.jdbc.Driver
mysql edition <= 5.x Need to use com.mysql.jdbc.Driver
** com.mysql.jdbc.Driver Source code as follows **

public class Driver extends com.mysql.cj.jdbc.Driver {
public Driver() throws SQLException {
super();
}
static {
System.err.println("Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. "
+ "The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.");
}
}

We can see through the source code Driver Inherited com.mysql.cj.jdbc.Driver, If not cj The project will run, but it will print a warning , The driver version needs to be upgraded
So don't lie when this sentence appears .

For microservices , We try to follow three steps when adding microservice components
1 pom File import dependency
2 yml Write configuration
3 Item annotated

The introduction of user microservices Nacos step

  • Introduce dependencies
 <!--Nacos-->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
  • yml Write configuration
 #=========================#
#========== Nacos =========#
#=========================#
spring:
cloud:
nacos:
discovery:
server-addr: (nacos Request address , The format is ip[ domain name ]:port; for example xxx.com:8848, Be careful Don't add it before the address http the latter https)
  • Item annotated ( There is no comment , Unwanted )
    ** After starting the current project , After success, you will find out first Nacos There will be a user-center Service for **

    thus Microservices are registered with Nacos Then it succeeded , We found service registration easy , It's just two simple steps , Plus dependence , Write configuration
    Packaging for different environments  The order is mvn install -Ppro/-Pdev/-Ptest, You can pack whatever environment you need

The next section will show you about services and service invocations , Hope to help you build a simple micro service system .

版权声明
本文为[ityml]所创,转载请带上原文链接,感谢

  1. 【计算机网络 12(1),尚学堂马士兵Java视频教程
  2. 【程序猿历程,史上最全的Java面试题集锦在这里
  3. 【程序猿历程(1),Javaweb视频教程百度云
  4. Notes on MySQL 45 lectures (1-7)
  5. [computer network 12 (1), Shang Xuetang Ma soldier java video tutorial
  6. The most complete collection of Java interview questions in history is here
  7. [process of program ape (1), JavaWeb video tutorial, baidu cloud
  8. Notes on MySQL 45 lectures (1-7)
  9. 精进 Spring Boot 03:Spring Boot 的配置文件和配置管理,以及用三种方式读取配置文件
  10. Refined spring boot 03: spring boot configuration files and configuration management, and reading configuration files in three ways
  11. 精进 Spring Boot 03:Spring Boot 的配置文件和配置管理,以及用三种方式读取配置文件
  12. Refined spring boot 03: spring boot configuration files and configuration management, and reading configuration files in three ways
  13. 【递归,Java传智播客笔记
  14. [recursion, Java intelligence podcast notes
  15. [adhere to painting for 386 days] the beginning of spring of 24 solar terms
  16. K8S系列第八篇(Service、EndPoints以及高可用kubeadm部署)
  17. K8s Series Part 8 (service, endpoints and high availability kubeadm deployment)
  18. 【重识 HTML (3),350道Java面试真题分享
  19. 【重识 HTML (2),Java并发编程必会的多线程你竟然还不会
  20. 【重识 HTML (1),二本Java小菜鸟4面字节跳动被秒成渣渣
  21. [re recognize HTML (3) and share 350 real Java interview questions
  22. [re recognize HTML (2). Multithreading is a must for Java Concurrent Programming. How dare you not
  23. [re recognize HTML (1), two Java rookies' 4-sided bytes beat and become slag in seconds
  24. 造轮子系列之RPC 1:如何从零开始开发RPC框架
  25. RPC 1: how to develop RPC framework from scratch
  26. 造轮子系列之RPC 1:如何从零开始开发RPC框架
  27. RPC 1: how to develop RPC framework from scratch
  28. 一次性捋清楚吧,对乱糟糟的,Spring事务扩展机制
  29. 一文彻底弄懂如何选择抽象类还是接口,连续四年百度Java岗必问面试题
  30. Redis常用命令
  31. 一双拖鞋引发的血案,狂神说Java系列笔记
  32. 一、mysql基础安装
  33. 一位程序员的独白:尽管我一生坎坷,Java框架面试基础
  34. Clear it all at once. For the messy, spring transaction extension mechanism
  35. A thorough understanding of how to choose abstract classes or interfaces, baidu Java post must ask interview questions for four consecutive years
  36. Redis common commands
  37. A pair of slippers triggered the murder, crazy God said java series notes
  38. 1、 MySQL basic installation
  39. Monologue of a programmer: despite my ups and downs in my life, Java framework is the foundation of interview
  40. 【大厂面试】三面三问Spring循环依赖,请一定要把这篇看完(建议收藏)
  41. 一线互联网企业中,springboot入门项目
  42. 一篇文带你入门SSM框架Spring开发,帮你快速拿Offer
  43. 【面试资料】Java全集、微服务、大数据、数据结构与算法、机器学习知识最全总结,283页pdf
  44. 【leetcode刷题】24.数组中重复的数字——Java版
  45. 【leetcode刷题】23.对称二叉树——Java版
  46. 【leetcode刷题】22.二叉树的中序遍历——Java版
  47. 【leetcode刷题】21.三数之和——Java版
  48. 【leetcode刷题】20.最长回文子串——Java版
  49. 【leetcode刷题】19.回文链表——Java版
  50. 【leetcode刷题】18.反转链表——Java版
  51. 【leetcode刷题】17.相交链表——Java&python版
  52. 【leetcode刷题】16.环形链表——Java版
  53. 【leetcode刷题】15.汉明距离——Java版
  54. 【leetcode刷题】14.找到所有数组中消失的数字——Java版
  55. 【leetcode刷题】13.比特位计数——Java版
  56. oracle控制用户权限命令
  57. 三年Java开发,继阿里,鲁班二期Java架构师
  58. Oracle必须要启动的服务
  59. 万字长文!深入剖析HashMap,Java基础笔试题大全带答案
  60. 一问Kafka就心慌?我却凭着这份,图灵学院vip课程百度云