【springcloud】简单创建一个springcloud项目

作者: 原始人y | 来源:发表于2021-02-25 16:31 被阅读0次

简单的springcloud搭建

注册中心：eureka

接口服务：server

web服务：web

网关：zuul

配置中心：config

pom参数统一管理：common

1、创建一个空的maven项目为springcloud

image

2、修改pom.xml文件

image

源代码

![image](https://img.haomeiwen.com/i1834019/2c9605585db13446.gif?imageMogr2/auto-orient/strip)

![复制代码](https://img.haomeiwen.com/i1834019/6b4d4ecf8439827e.gif?imageMogr2/auto-orient/strip) 

<pre style="margin: 0px; padding: 0px; overflow: auto; word-wrap: break-word; font-family: &quot;Courier New&quot; !important; font-size: 12px !important;"><?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.xiaostudy</groupId>
    <artifactId>springcloudTest</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>pom</packaging>

    <modules>
    </modules>

    <build>
        <plugins>
            <!--参考文章：https://blog.csdn.net/liupeifeng3514/article/details/80236077-->
            <plugin>
                <!-- 指定maven编译的jdk版本,如果不指定,maven3默认用jdk 1.5 maven2默认用jdk1.3 -->
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <!-- 源代码使用的JDK版本 -->
                    <source>1.8</source>
                    <!-- 需要生成的目标class文件的编译版本 -->
                    <target>1.8</target>
                    <!-- 字符集编码 -->
                    <encoding>UTF-8</encoding>
                    <!-- 跳过测试 -->
                    <skip>true</skip>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project></pre>

![复制代码](https://img.haomeiwen.com/i1834019/5771eb4ef3a5812d.gif?imageMogr2/auto-orient/strip)

3、创建注册中心Eureka

image

3.1、配置注册中心eureka的配置文件application.yml

server:
  port: 9900

eureka:
  instance:
    hostname: localhost
  client:
    #     声明是否将自己的信息注册到 Eureka 服务器上
    registerWithEureka: false
    #     是否到 Eureka 服务器中抓取注册信息
    fetchRegistry: false
    serviceUrl:
      defaultZone: http://@eureka.user.name@:@eureka.user.password@@${eureka.instance.hostname}:${server.port}/eureka/


spring:
  application:
    name: eurka-service
  security:
    user:
      name: @eureka.user.name@
      password: @eureka.user.password@

image

eureka的pom文件

<?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>2.2.6.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.xiaostudy</groupId>
    <artifactId>eureka</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>eureka</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Hoxton.SR3</spring-cloud.version>

        <eureka.user.name>admin</eureka.user.name>
        <eureka.user.password>xiaostudy.test</eureka.user.password>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
        </dependency>

        <!--为eureka配置账号密码-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>

        <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>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</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>
        </plugins>
        <resources>
            <resource>
                <!--指定resources插件处理哪个目录下的资源文件-->
                <directory>src/main/resources</directory>
                <!--打开资源过滤功能-->
                <filtering>true</filtering>
            </resource>
        </resources>
    </build>

</project>

3.2、添加@EnableEurekaServer注解

image

3.3、启动注册中心

image

注：如果启动报读取不了yml文件，可能是编码问题。把编码设置成utf-8就可以了。

image

3.4、访问

http://localhost:9900/

image

注：如果启动后登陆不了，可以试试添加配置类（必须，不然其他服务发现不了注册中心）

package com.xiaostudy.eureka.config;

import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        //关闭csrf
        http.csrf().disable();
        super.configure(http);
    }
}

4、创建一个server模块，模拟发布接口

image

4.1、添加注解@EnableDiscoveryClient和@EnableFeignClients

image

server的yml文件

server:
  port: 9901

eureka:
  instance:
    preferIpAddress: true
    instance-id: ${spring.cloud.client.ip-address}:${server.port}
  client:
    serviceUrl:
      defaultZone: http://@eureka.user.name@:@eureka.user.password@@localhost:9900/eureka/

spring:
  application:
    name: server-service
  cloud:
    loadbalancer:
      retry:
        enabled: false

image

server的pom.xml文件

<?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>2.2.6.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.xiaostudy</groupId>
    <artifactId>server</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>server</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Hoxton.SR3</spring-cloud.version>

        <eureka.user.name>admin</eureka.user.name>
        <eureka.user.password>xiaostudy.test</eureka.user.password>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>

        <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>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</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>
        </plugins>
        <resources>
            <resource>
                <!--指定resources插件处理哪个目录下的资源文件-->
                <directory>src/main/resources</directory>
                <!--打开资源过滤功能-->
                <filtering>true</filtering>
            </resource>
        </resources>
    </build>

</project>

4.2、创建services及实现类、controller和接口

services接口

package com.xiaostudy.server.services;

public interface TestServices {

    public String get(String name);
}

services实现类

package com.xiaostudy.server.services.impl;

import com.xiaostudy.server.services.TestServices;
import org.springframework.stereotype.Service;

@Service
public class TestServicesImpl implements TestServices {

    @Override
    public String get(String name) {
        return "参数name：" + name;
    }
}

controller

package com.xiaostudy.server.controller;

import com.xiaostudy.server.services.TestServices;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

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

    @Autowired
    private TestServices testServices;

    @RequestMapping("/get")
    public String get(String name) {
        return testServices.get(name);
    }
}

接口

package com.xiaostudy.server.apis;

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

@FeignClient(name = "server-service", contextId = "TestServicesApis")
public interface TestServicesApis {

    @RequestMapping("/test/get")
    public String get(@RequestParam String name);
}

4.3、启动server

image

5、添加一个web模块，通过接口调用服务

image

web的pom.xml文件

<?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>2.2.6.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.xiaostudy</groupId>
    <artifactId>web</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>web</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Hoxton.SR3</spring-cloud.version>

        <eureka.user.name>admin</eureka.user.name>
        <eureka.user.password>xiaostudy.test</eureka.user.password>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

        <dependency>
            <groupId>com.xiaostudy</groupId>
            <artifactId>server</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>

        <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>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</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>
        </plugins>
        <resources>
            <resource>
                <!--指定resources插件处理哪个目录下的资源文件-->
                <directory>src/main/resources</directory>
                <!--打开资源过滤功能-->
                <filtering>true</filtering>
            </resource>
        </resources>
    </build>

</project>

web的配置文件application.yml

server:
  port: 9902

eureka:
  instance:
    preferIpAddress: true
    instance-id: ${spring.cloud.client.ip-address}:${server.port}
  client:
    serviceUrl:
      defaultZone: http://@eureka.user.name@:@eureka.user.password@@localhost:9900/eureka/

spring:
  application:
    name: web-service
  cloud:
    loadbalancer:
      retry:
        enabled: false

image

web的controller

package com.xiaostudy.web.controller;

import com.xiaostudy.server.apis.TestServicesApis;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/test")
public class TestWebController {

    @Autowired
    private TestServicesApis testServicesApis;

    @RequestMapping("/getTest")
    public String getTest() {
        return testServicesApis.get("通过web调用的");
    }
}

启动web

image

6、添加网关zuul

image

zuul的pom.xml文件

<?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>2.2.6.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.xiaostudy</groupId>
    <artifactId>zuul</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>zuul</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Hoxton.SR3</spring-cloud.version>

        <eureka.user.name>admin</eureka.user.name>
        <eureka.user.password>xiaostudy.test</eureka.user.password>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-zuul</artifactId>
        </dependency>

        <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>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</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>
        </plugins>
        <resources>
            <resource>
                <!--指定resources插件处理哪个目录下的资源文件-->
                <directory>src/main/resources</directory>
                <!--打开资源过滤功能-->
                <filtering>true</filtering>
            </resource>
        </resources>
    </build>

</project>

image

zuul的application.yml文件

server:
  port: 9903

eureka:
  instance:
    preferIpAddress: true
    instance-id: ${spring.cloud.client.ip-address}:${server.port}
  client:
    serviceUrl:
      defaultZone: http://@eureka.user.name@:@eureka.user.password@@localhost:9900/eureka/

spring:
  application:
    name: zuul-service
  cloud:
    loadbalancer:
      retry:
        enabled: false

zuul:
  routes:
    server:
      path: /server/**
      serviceId: server-service
      sensitiveHeaders: "*"
    web:
      path: /web/**
      serviceId: web-service
      sensitiveHeaders: "*"

添加注解@EnableDiscoveryClient和@EnableZuulProxy

image

启动zuul

image

7、添加配置中心

image

config的application.yml

server:
  port: 9904

eureka:
  instance:
    preferIpAddress: true
    instance-id: ${spring.cloud.client.ip-address}:${server.port}
  client:
    serviceUrl:
      defaultZone: http://@eureka.user.name@:@eureka.user.password@@localhost:9900/eureka/

spring:
  application:
    name: config-service
  cloud:
    loadbalancer:
      retry:
        enabled: false
  profiles:
    active: native

添加注解@EnableDiscoveryClient和@EnableConfigServer

image

image

或者

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-config-client</artifactId>
</dependency>

image

web的bootstrap.yml文件

server:
  port: 9902

eureka:
  instance:
    preferIpAddress: true
    instance-id: ${spring.cloud.client.ip-address}:${server.port}
  client:
    serviceUrl:
      defaultZone: http://@eureka.user.name@:@eureka.user.password@@localhost:9900/eureka/

spring:
  application:
    name: web-service
  cloud:
    loadbalancer:
      retry:
        enabled: false
    config:
      discovery:
        # 开启配置中心服务发现支持
        enabled: true
        # 配置中心服务的id
        service-id: config-service
      # 那个文件夹，config模块resources/config下的那个文件夹
      label: dev
      # 读取后缀名称
      profile: dev
      # 配置文件名称
      name: config
      # fail-fast 如果访问配置中心失败，则停止启动服务
      fail-fast: true
      # retry 访问配置中心失败时的重试策略
      retry:
        initial-interval: 2000
        # 最多重试次数
        max-attempts: 6
        # 最大重试间隔
        max-interval: 4000
        # 每次重试时间是之前的倍数
        multiplier: 1.2

启动顺序，注册中心（eureka）、配置中心（config）、server、web、zuul（后面三个没有顺序）

image

【springcloud】简单创建一个springcloud项目

1、创建一个空的maven项目为springcloud

2、修改pom.xml文件

3、创建注册中心Eureka

3.2、添加@EnableEurekaServer注解

3.3、启动注册中心

3.4、访问

4、创建一个server模块，模拟发布接口

4.1、添加注解@EnableDiscoveryClient和@EnableFeignClients

server的yml文件

server的pom.xml文件

4.2、创建services及实现类、controller和接口

4.3、启动server

5、添加一个web模块，通过接口调用服务

web的pom.xml文件

web的配置文件application.yml

web的controller

启动web

6、添加网关zuul

zuul的pom.xml文件

zuul的application.yml文件

添加注解@EnableDiscoveryClient和@EnableZuulProxy

启动zuul

7、添加配置中心

config的application.yml

添加注解@EnableDiscoveryClient和@EnableConfigServer

web的bootstrap.yml文件

启动顺序，注册中心（eureka）、配置中心（config）、server、web、zuul（后面三个没有顺序）

8、添加一个common模块，用于各个模块的父模块，统一管理pom.xml的参数配置

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