记录一： Spring Cloud Alibaba 2021.X 搭建

一 　　》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》

下载nacos    https://github.com/alibaba/nacos      nacos-server-2.0.3.zip   Windows 版 

解压后，数据库新建nacos库，将 X:\nacos\conf 目录下的 nacos-mysql.sql 文件执行 导入数据表与数据

修改文件 X:\nacos\conf 目录下 application.properties 

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 1 #*************** Config Module Related Configurations ***************#
 2 ### If use MySQL as datasource:
 3 spring.datasource.platform=mysql
 4 
 5 ### Count of DB:
 6 db.num=1
 7 
 8 ### Connect URL of DB:
 9 db.url.0=jdbc:mysql://127.0.0.1:3306/nacos?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC
10 db.user.0=root
11 db.password.0=Root!234
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修改文件 X:\nacos\bin 目录下的 startup.cmd  标红部分 为单机模式

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set BASE_DIR="%BASE_DIR:~0,-5%"

set CUSTOM_SEARCH_LOCATIONS=file:%BASE_DIR%/conf/

set MODE="standalone"   rem “cluster”
set FUNCTION_MODE="all"
set SERVER=nacos-server
set MODE_INDEX=-1
set FUNCTION_MODE_INDEX=-1
set SERVER_INDEX=-1
set EMBEDDED_STORAGE_INDEX=-1
set EMBEDDED_STORAGE=""
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双击启动 startup.cmd  第一行显示   "nacos is starting with standalone"  为单机模式

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"nacos is starting with standalone"

         ,--.
       ,--.'|
   ,--,:  : |                                           Nacos 2.0.3
,`--.'`|  ' :                       ,---.               Running in stand alone mode, All function modules
|   :  :  | |                      '   ,'\   .--.--.    Port: 8848
:   |   \ | :  ,--.--.     ,---.  /   /   | /  /    '   Pid: 7892
|   : '  '; | /       \   /     \.   ; ,. :|  :  /`./   Console: http://127.0.0.1:8848/nacos/index.html
'   ' ;.    ;.--.  .-. | /    / ''   | |: :|  :  ;_
|   | | \   | \__\/: . ..    ' / '   | .; : \  \    `.      https://nacos.io
'   : |  ; .' ," .--.; |'   ; :__|   :    |  `----.   \
|   | '`--'  /  /  ,.  |'   | '.'|\   \  /  /  /`--'  /
'   : |     ;  :   .'   \   :    : `----'  '--'.     /
;   |.'     |  ,     .-./\   \  /            `--'---'
'---'        `--`---'     `----'

2023-04-02 08:56:24,132 INFO Bean 'org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandler@2392212b' of type [org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandler] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)

2023-04-02 08:56:24,138 INFO Bean 'methodSecurityMetadataSource' of type [org.springframework.security.access.method.DelegatingMethodSecurityMetadataSource] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)

2023-04-02 08:56:24,746 INFO Tomcat initialized with port(s): 8848 (http)

2023-04-02 08:56:25,248 INFO Root WebApplicationContext: initialization completed in 7616 ms

2023-04-02 08:56:30,342 INFO Initializing ExecutorService 'applicationTaskExecutor'

2023-04-02 08:56:30,512 INFO Adding welcome page: class path resource [static/index.html]

2023-04-02 08:56:31,244 INFO Creating filter chain: Ant [pattern='/**'], []

2023-04-02 08:56:31,299 INFO Creating filter chain: any request, [org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter@29f85fe1, org.springframework.security.web.context.SecurityContextPersistenceFilter@73d3e555, org.springframework.security.web.header.HeaderWriterFilter@bbf9e07, org.springframework.security.web.csrf.CsrfFilter@2af46afd, org.springframework.security.web.authentication.logout.LogoutFilter@3a08078c, org.springframework.security.web.savedrequest.RequestCacheAwareFilter@44924587, org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter@4487c0c2, org.springframework.security.web.authentication.AnonymousAuthenticationFilter@43a0a32d, org.springframework.security.web.session.SessionManagementFilter@2b289ac9, org.springframework.security.web.access.ExceptionTranslationFilter@31ceba99]

2023-04-02 08:56:31,483 INFO Initializing ExecutorService 'taskScheduler'

2023-04-02 08:56:31,501 INFO Exposing 16 endpoint(s) beneath base path '/actuator'

2023-04-02 08:56:31,638 INFO Tomcat started on port(s): 8848 (http) with context path '/nacos'

2023-04-02 08:56:31,641 INFO Nacos started successfully in stand alone mode. use external storage

2023-04-02 08:56:45,175 INFO Initializing Servlet 'dispatcherServlet'

2023-04-02 08:56:45,189 INFO Completed initialization in 13 ms
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访问 http://localhost:8848/nacos/index.html    账号密码为 nacos   

 

二　　》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》

　1.idea新建springboot项目《cloud》，保留  .idea    pom.xml   两个 ，其余全部删除。

　　修改pom.xml 文件   注意jdk版本对应springboot版本，springboot版本对应的springcloud版本 

  • 2022.x 分支对应的是 Spring Cloud 2022 与 Spring Boot 3.0.x，最低支持 JDK 17。
  • 2021.x 分支对应的是 Spring Cloud 2021 与 Spring Boot 2.6.x，最低支持 JDK 1.8。
  • 2020.0 分支对应的是 Spring Cloud 2020 与 Spring Boot 2.4.x，最低支持 JDK 1.8。
  • 2.2.x 分支对应的是 Spring Cloud Hoxton 与 Spring Boot 2.2.x，最低支持 JDK 1.8。
  • greenwich 分支对应的是 Spring Cloud Greenwich 与 Spring Boot 2.1.x，最低支持 JDK 1.8。
  • finchley 分支对应的是 Spring Cloud Finchley 与 Spring Boot 2.0.x，最低支持 JDK 1.8。
  • 1.x 分支对应的是 Spring Cloud Edgware 与 Spring Boot 1.x，最低支持 JDK 1.7。
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 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 4     <modelVersion>4.0.0</modelVersion>
 5     <parent>
 6         <groupId>org.springframework.boot</groupId>
 7         <artifactId>spring-boot-starter-parent</artifactId>
 8         <version>2.6.10</version>
 9         <relativePath/> <!-- lookup parent from repository -->
10     </parent>
11     <groupId>com.example</groupId>
12     <artifactId>cloud</artifactId>
13     <version>0.0.1-SNAPSHOT</version>
14     <name>cloud</name>
15     <description>cloud</description>
16 
17     <packaging>pom</packaging>
18 
19     <properties>
20         <java.version>1.8</java.version>
21         <spring-cloud-alibaba-dependencies-version>2021.0.5.0</spring-cloud-alibaba-dependencies-version>
22     </properties>
23 
24     <dependencies>
25         <dependency>
26             <groupId>org.springframework.boot</groupId>
27             <artifactId>spring-boot-starter</artifactId>
28         </dependency>
29         <dependency>
30             <groupId>org.springframework.boot</groupId>
31             <artifactId>spring-boot-starter-web</artifactId>
32         </dependency>
33         <dependency>
34             <groupId>org.springframework.boot</groupId>
35             <artifactId>spring-boot-starter-test</artifactId>
36             <scope>test</scope>
37             <exclusions>
38                 <exclusion>
39                     <groupId>org.junit.vintage</groupId>
40                     <artifactId>junit-vintage-engine</artifactId>
41                 </exclusion>
42             </exclusions>
43         </dependency>
44     </dependencies>
45 
46     <build>
47         <plugins>
48             <plugin>
49                 <groupId>org.springframework.boot</groupId>
50                 <artifactId>spring-boot-maven-plugin</artifactId>
51             </plugin>
52         </plugins>
53     </build>
54 
55     <dependencyManagement>
56         <dependencies>
57             <dependency>
58                 <groupId>com.alibaba.cloud</groupId>
59                 <artifactId>spring-cloud-alibaba-dependencies</artifactId>
60                 <version>${spring-cloud-alibaba-dependencies-version}</version>
61                 <type>pom</type>
62                 <scope>import</scope>
63             </dependency>
64         </dependencies>
65     </dependencyManagement>
66 </project>
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 　　2.新建在cloud项目下 新建 maven model 《provider》  注意是maven项目 

　　　　修改pom.xml

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<?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>
    <parent>
        <groupId>com.example</groupId>
        <artifactId>cloud</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <groupId>cn.com.provider</groupId>
    <artifactId>provider</artifactId>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
    <dependencies>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
    </dependencies>
</project>
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　　新建 java项目目录与application启动类

 

application.yam文件内容如下

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server:
  port: 8001
spring:
  application:
    name: provider
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848
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ProviderApplication.class 文件内容如下 （注意标红部分）

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package cn.com.provider;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

@SpringBootApplication
@EnableDiscoveryClient
public class ProviderApplication {

    public static void main(String[] args) {
        SpringApplication.run(ProviderApplication.class, args);
    }

}
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创建一个TestController.class  （ResultUtil.result()我自己创建的返回封装，不重要，写个字符串就“provider success” 就好！）

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package cn.com.provider.controller;

import cn.com.kity.common.result.ResultUtil;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping(value = "/test")
public class TestController {

    @GetMapping(value = "/test01")
    public Object eg01(){
　　　　//provider success
        return ResultUtil.result();
    }

}
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启动provider 访问 localhost:8001/test/test01  返回    provider success

nacos服务管理下服务列表出现provider服务

　　3.同上创建consumer服务【maven项目】  consumer服务需要调用provider服务 则使用Feign交互

目录结构为：

 

 

pom.xml如下： 多了三个  　　openfeign；　　loadbalancer；　　sentinel；

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 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <project xmlns="http://maven.apache.org/POM/4.0.0"
 3          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 5     <modelVersion>4.0.0</modelVersion>
 6     <parent>
 7         <groupId>com.example</groupId>
 8         <artifactId>cloud</artifactId>
 9         <version>0.0.1-SNAPSHOT</version>
10     </parent>
11 
12     <artifactId>consumer</artifactId>
13 
14     <properties>
15         <maven.compiler.source>8</maven.compiler.source>
16         <maven.compiler.target>8</maven.compiler.target>
17         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
18     </properties>
19     <dependencies>
20         <dependency>
21             <groupId>com.alibaba.cloud</groupId>
22             <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
23         </dependency>
24         <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-openfeign -->
25         <dependency>
26             <groupId>org.springframework.cloud</groupId>
27             <artifactId>spring-cloud-starter-openfeign</artifactId>
28             <version>3.1.6</version>
29         </dependency>
30         <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-loadbalancer -->
31         <dependency>
32             <groupId>org.springframework.cloud</groupId>
33             <artifactId>spring-cloud-loadbalancer</artifactId>
34             <version>3.1.6</version>
35         </dependency>
36         <!-- https://mvnrepository.com/artifact/com.alibaba.cloud/spring-cloud-starter-alibaba-sentinel -->
37         <dependency>
38             <groupId>com.alibaba.cloud</groupId>
39             <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
40             <exclusions> <!--除去该依赖，controller返回的结果才是json，不去除就xml-->
41                 <exclusion>
42                 <groupId>com.fasterxml.jackson.dataformat</groupId>
43                     <artifactId>jackson-dataformat-xml</artifactId>
44                 </exclusion>
45             </exclusions>
46         </dependency>
47     </dependencies>
48 </project>
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application.yml内容如下：

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 1 server:
 2   port: 8002
 3 spring:
 4   application:
 5     name: consumer
 6   cloud:
 7     nacos:
 8       discovery:
 9         server-addr: 127.0.0.1:8848
10 feign:
11   sentinel:
12     enabled: true #开启feign对sentinel的支持 服务降级
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创建ConsumerApplication.class 内容如下：【注意标红部分】

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package cn.com.consumer;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.openfeign.EnableFeignClients;

@SpringBootApplication
@EnableFeignClients
@EnableDiscoveryClient
public class ConsumerApplication {
    public static void main(String[] args) {
        SpringApplication.run(ConsumerApplication.class, args);
    }

}
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创建FeignFallBack.class 内容如下：

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package cn.com.consumer.feign;



import org.springframework.cloud.openfeign.FallbackFactory;
import org.springframework.stereotype.Component;

@Component
public class FeignFallBack implements FallbackFactory<ConsumerFeignToProvider> {
    @Override
    public ConsumerFeignToProvider create(Throwable cause) {
        return () -> "provider 服务提供者挂了！！！！！！";
    }
}
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创建ConsumerFeignToProvider.class内容如下：

标红地方为provider服务名称，

application.yml中

spring:
  application:
    name: provider
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package cn.com.consumer.feign;


import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;

@FeignClient(name = "provider",fallbackFactory = FeignFallBack.class)
public interface ConsumerFeignToProvider {

    @GetMapping("/test/test01")
    String test01();

}
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创建TestController.class内容如下

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 1 package cn.com.consumer.controller;
 2 
 3 import cn.com.consumer.feign.ConsumerFeignToProvider;
 4 import org.springframework.web.bind.annotation.GetMapping;
 5 import org.springframework.web.bind.annotation.RequestMapping;
 6 import org.springframework.web.bind.annotation.RestController;
 7 
 8 import javax.annotation.Resource;
 9 
10 @RestController
11 @RequestMapping(value = "/consumer")
12 public class TestController {
13 
14     @Resource
15     ConsumerFeignToProvider cftp;
16 
17     @GetMapping(value = "/eg01")
18     public Object eg01(){
19         return "consumer01 掉用 ===" + cftp.test01() ;
20     }
21 
22 }
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启动consumer服务：

nacos服务管理下服务列表出现consumer服务

访问http://localhost:8002/consumer/eg01 返回

consumer01 掉用 ===provider success

停止provider服务  访问http://localhost:8002/consumer/eg01 返回

consumer01 掉用 ===provider 服务提供者挂了！！！！！！

 

====================================================结束===================================================gateway+++conifg======================================================

posted on 2023-04-02 10:37  zy平平仄仄  阅读(218)  评论(0)  编辑  收藏  举报
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