Spring cloud

原创于 2019-06-20 23:48:28 发布 · 533 阅读

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#spring Cloud

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本文围绕Spring Cloud微服务技术栈展开，介绍了其部署相关内容。包含统一的依赖管理，服务注册与发现的Eureka，涉及服务提供者与消费者的配置，如config配置中心、zipkin链路追踪等。还提及路由网关zuul及相关回调、过滤，最后说明了启动顺序和项目源码情况。

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Spring cloud

微服务技术栈
- Spring cloud部署

微服务技术栈

微服务条目	落地技术	备注
服务开发	Spring Boot、Spring、Spring MVC
服务配置与管理	Netfix公司的Archaius、阿里的Diamond等
服务注册与发现	Eureka、Consule、Zookeeper
服务调用	Rest、RPC
服务熔断	Hystrix等
负载均衡	Ribbon、Nignx等
服务接口调用	Feign等
服务配置中心管理	SpringCloud Config、Chef等
服务路由（网关）	Zuul等
服务监控	Zabbix、Spectaor等
全链路追踪	Zipkin,Brave、Dapper等
服务部署	Docker、OpenStack等
数据流操作开发部	SpringCloud Stream
事件消息总线	Spring Cloud Bus
…

Spring cloud部署

统一的依赖管理dependencies

创建springcloud-dependencies项目,pom.xml文件如下

<?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>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.5.RELEASE</version>
    </parent>

    <groupId>com.shyb</groupId>
    <artifactId>springcloud-dependencies</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <packaging>pom</packaging>

    <properties>
        <!-- Environment Settings -->
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

        <!-- Spring Settings -->
        <spring-cloud.version>Greenwich.SR1</spring-cloud.version>
        <zipkin.version>2.10.1</zipkin.version>
        <spring.boot.admin.version>2.1.5</spring.boot.admin.version>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!-- zipkin链路追踪 begin-->
            <dependency>
                <groupId>io.zipkin.java</groupId>
                <artifactId>zipkin</artifactId>
                <version>${zipkin.version}</version>
            </dependency>
            <dependency>
                <groupId>io.zipkin.java</groupId>
                <artifactId>zipkin-server</artifactId>
                <exclusions>
                    <exclusion>
                        <groupId>org.springframework.boot</groupId>
                        <artifactId>spring-boot-starter-log4j2</artifactId>
                    </exclusion>
                </exclusions>
                <version>${zipkin.version}</version>
            </dependency>
            <dependency>
                <groupId>io.zipkin.java</groupId>
                <artifactId>zipkin-autoconfigure-ui</artifactId>
                <version>${zipkin.version}</version>
            </dependency>
            <!-- zipkin链路追踪 end-->

            <!-- admin服务监控 begin-->
            <dependency>
                <groupId>de.codecentric</groupId>
                <artifactId>spring-boot-admin-starter-server</artifactId>
                <version>${spring.boot.admin.version}</version>
            </dependency>
            <!-- admin服务监控 begin-->
        </dependencies>
    </dependencyManagement>
    <dependencies>
        <!-- 所有子工程都需要的依赖 start -->
        <!-- eureka start-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zipkin</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>
        <!-- eureka end-->
    </dependencies>
    <build>
        <plugins>
            <!-- Compiler 插件, 设定 JDK 版本 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <showWarnings>true</showWarnings>
                </configuration>
            </plugin>

            <!-- 打包 jar 文件时，配置 manifest 文件，加入 lib 包的 jar 依赖 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <configuration>
                    <archive>
                        <addMavenDescriptor>false</addMavenDescriptor>
                    </archive>
                </configuration>
                <executions>
                    <execution>
                        <configuration>
                            <archive>
                                <manifest>
                                    <!-- Add directory entries -->
                                    <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
                                    <addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
                                    <addClasspath>true</addClasspath>
                                </manifest>
                            </archive>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

            <!-- resource -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-resources-plugin</artifactId>
            </plugin>

            <!-- install -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-install-plugin</artifactId>
            </plugin>

            <!-- clean -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-clean-plugin</artifactId>
            </plugin>

            <!-- ant -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-antrun-plugin</artifactId>
            </plugin>

            <!-- dependency -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
            </plugin>
        </plugins>

        <pluginManagement>
            <plugins>
                <!-- Java Document Generate -->
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-javadoc-plugin</artifactId>
                    <executions>
                        <execution>
                            <phase>prepare-package</phase>
                            <goals>
                                <goal>jar</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>

                <!-- YUI Compressor (CSS/JS压缩) -->
                <plugin>
                    <groupId>net.alchim31.maven</groupId>
                    <artifactId>yuicompressor-maven-plugin</artifactId>
                    <version>1.5.1</version>
                    <executions>
                        <execution>
                            <phase>prepare-package</phase>
                            <goals>
                                <goal>compress</goal>
                            </goals>
                        </execution>
                    </executions>
                    <configuration>
                        <encoding>UTF-8</encoding>
                        <jswarn>false</jswarn>
                        <nosuffix>true</nosuffix>
                        <linebreakpos>30000</linebreakpos>
                        <force>true</force>
                        <includes>
                            <include>**/*.js</include>
                            <include>**/*.css</include>
                        </includes>
                        <excludes>
                            <exclude>**/*.min.js</exclude>
                            <exclude>**/*.min.css</exclude>
                        </excludes>
                    </configuration>
                </plugin>
            </plugins>
        </pluginManagement>

        <!-- 资源文件配置 -->
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <excludes>
                    <exclude>**/*.java</exclude>
                </excludes>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
            </resource>
        </resources>
    </build>

    <repositories>
        <repository>
            <id>aliyun-repos</id>
            <name>Aliyun Repository</name>
            <url>http://maven.aliyun.com/nexus/content/groups/public</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>

        <repository>
            <id>sonatype-repos</id>
            <name>Sonatype Repository</name>
            <url>https://oss.sonatype.org/content/groups/public</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
        <repository>
            <id>sonatype-repos-s</id>
            <name>Sonatype Repository</name>
            <url>https://oss.sonatype.org/content/repositories/snapshots</url>
            <releases>
                <enabled>false</enabled>
            </releases>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>

        <repository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

    <pluginRepositories>
        <pluginRepository>
            <id>aliyun-repos</id>
            <name>Aliyun Repository</name>
            <url>http://maven.aliyun.com/nexus/content/groups/public</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>
</project>

服务注册与发现Eureka

1. 创建springcloud-eureka项目,pom.xml文件如下

<?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.shyb</groupId>
        <artifactId>springcloud-dependencies</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <relativePath>../springcloud-dependencies/pom.xml</relativePath>
    </parent>

    <artifactId>springcloud-eureka</artifactId>
    <packaging>jar</packaging>
	<dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>com.shyb.springcloud.eureka.EurekaApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

2. 启动类开启eureka server注解

package com.shyb.springcloud.eureka;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

/**
 * @author wzh
 * @date 2019/6/4 - 10:12
 */
@SpringBootApplication
@EnableEurekaServer
public class EurekaApplication {
    public static void main(String[] args) {
        SpringApplication.run(EurekaApplication.class,args);
    }
}

3. application.yml配置

spring:
  cloud:
    config:
      uri: localhost:8888
      name: eureka
      label: master
      profile: dev

服务提供者(注册)

config配置中心

1. springcloud-config项目pom.xml

<?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.shyb</groupId>
        <artifactId>springcloud-dependencies</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <relativePath>../springcloud-dependencies/pom.xml</relativePath>
    </parent>

    <artifactId>springcloud-config</artifactId>
    <packaging>jar</packaging>

    <dependencies>
        <!-- Spring Cloud Begin -->
        <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-config-server</artifactId>
    </dependency>
        <!-- Spring Cloud End -->
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>com.shyb.springcloud.config.ConfigApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

2. 启动类注册到eureka，开启config server

package com.shyb.springcloud.config;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.config.server.EnableConfigServer;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

/**
 * @author wzh
 * @date 2019/6/17 - 21:27
 */
@EnableConfigServer
@EnableEurekaClient
@SpringBootApplication
public class ConfigApplication {
    public static void main(String[] args) {
        SpringApplication.run(ConfigApplication.class,args);
    }
}

3. application.yml配置
注意事项： config配置中心的server.port在application.yml只能配8888，要换需要在bootstrap.yml配置(优先级高于application.yml)

spring:
  application:
    name: springcloud-config
  cloud:
    config:
      label: master
      server:
        git:
          uri: https://github.com/www5978058/springcloud-config.git
          search-paths: respo
          username: www5978058
          password: ********

server:
  port: 8888

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/

zipkin链路追踪

springcloud-zipkin的pom.xml

<?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.shyb</groupId>
        <artifactId>springcloud-dependencies</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <relativePath>../springcloud-dependencies/pom.xml</relativePath>
    </parent>

    <artifactId>springcloud-zipkin</artifactId>
    <packaging>jar</packaging>

    <dependencies>
        <!-- Spring Boot Begin -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- Spring Boot End -->

        <!-- Spring Cloud Begin -->
        <dependency>
            <groupId>io.zipkin.java</groupId>
            <artifactId>zipkin</artifactId>
        </dependency>
        <dependency>
            <groupId>io.zipkin.java</groupId>
            <artifactId>zipkin-server</artifactId>
        </dependency>
        <dependency>
            <groupId>io.zipkin.java</groupId>
            <artifactId>zipkin-autoconfigure-ui</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <!-- Spring Cloud End -->
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>com.shyb.springcloud.zipkin.ZipKinApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

yml配置

spring:
  cloud:
    config:
      uri: localhost:8888
      name: zipkin
      label: master
      profile: dev

启动类配置

package com.shyb.springcloud.zipkin;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import zipkin.server.internal.EnableZipkinServer;

/**
 * @author wzh
 * @date 2019/6/18 - 9:35
 */
@EnableZipkinServer
@EnableEurekaClient
@SpringBootApplication
public class    ZipKinApplication {
    public static void main(String[] args) {
        SpringApplication.run(ZipKinApplication.class,args);
    }
}

admin服务监控

springcloud-admin的pom.xml

<?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.shyb</groupId>
        <artifactId>springcloud-dependencies</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <relativePath>../springcloud-dependencies/pom.xml</relativePath>
    </parent>

    <artifactId>springcloud-admin</artifactId>
    <packaging>jar</packaging>

    <dependencies>
        <!-- Spring Boot Begin -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-webflux</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.jolokia</groupId>
            <artifactId>jolokia-core</artifactId>
        </dependency>
        <dependency>
            <groupId>de.codecentric</groupId>
            <artifactId>spring-boot-admin-starter-server</artifactId>
        </dependency>
        <!-- Spring Boot End -->

        <!-- Spring Cloud Begin -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zipkin</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <!-- Spring Cloud End -->
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>com.shyb.springcloud.admin.AdminApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

yml配置

spring:
  cloud:
    config:
      uri: localhost:8888
      name: admin
      label: master
      profile: dev

启动类注册进eureka,开启admin Server

package com.shyb.springcloud.admin;

import de.codecentric.boot.admin.server.config.EnableAdminServer;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

/**
 * @author wzh
 * @date 2019/6/18 - 11:13
 */
@EnableAdminServer
@EnableEurekaClient
@SpringBootApplication
public class AdminApplication {
    public static void main(String[] args) {
        SpringApplication.run(AdminApplication.class,args);
    }
}

业务提供

1. springcloud-service-admin项目下pom.xml

<?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.shyb</groupId>
        <artifactId>springcloud-dependencies</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <relativePath>../springcloud-dependencies/pom.xml</relativePath>
    </parent>

    <artifactId>springcloud-service-admin</artifactId>
    <packaging>jar</packaging>
	<dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zipkin</artifactId>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>com.shyb.springcloud.service.admin.ServiceAdminApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

2. 启动类配置服务 client

package com.shyb.springcloud.service.admin;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

/**
 * @author wzh
 * @date 2019/6/4 - 10:32
 */
@EnableEurekaClient
@SpringBootApplication
public class ServiceAdminApplication {
    public static void main(String[] args) {
        SpringApplication.run(ServiceAdminApplication.class,args);
    }
}

3. application.yml配置

spring:
  application:
    name: springcloud-service-admin
  zipkin:
    base-url: http://localhost:9411
server:
  port: 8763

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/

4. 配置业务逻辑，提供API接口

package com.shyb.springcloud.service.admin.controller;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author wzh
 * @date 2019/6/4 - 10:38
 */
@RestController
public class AdminController {
    @Value("${server.port}")
    private String port;

    @GetMapping("/")
    public String hello(){
        return "你的端口是"+port;
    }

    @GetMapping("/show")
    public String show(String message){
        return "你的消息是"+",端口是"+port;
    }
}

服务消费者(发现)

ribbon+hystrix

springcloud-web-admin-ribbon项目的pom.xml

<?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.shyb</groupId>
        <artifactId>springcloud-dependencies</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <relativePath>../springcloud-dependencies/pom.xml</relativePath>
    </parent>

    <artifactId>springcloud-web-admin-ribbon</artifactId>
    <packaging>jar</packaging>

    <dependencies>
        <!-- Spring Boot Begin -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- Spring Boot End -->

        <!-- Spring Cloud Begin -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zipkin</artifactId>
        </dependency>
        <!-- Spring Cloud End -->

        <!-- 解决 thymeleaf 模板引擎一定要执行严格的 html5 格式校验问题 -->
        <dependency>
            <groupId>net.sourceforge.nekohtml</groupId>
            <artifactId>nekohtml</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>com.shyb.springcloud.web.admin.ribbon.WebAdminRibbonApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

启动类配置 增加服务发现和开启断路器

package com.shyb.springcloud.web.admin.ribbon;

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

/**
 * @author wzh
 * @date 2019/6/4 - 10:49
 */
@SpringBootApplication
@EnableDiscoveryClient
@EnableHystrix
public class WebAdminRibbonApplication {
    public static void main(String[] args) {
        SpringApplication.run(WebAdminRibbonApplication.class,args);
    }
}

yml配置

spring:
  cloud:
    config:
      uri: localhost:8888
      name: web-admin-ribbon
      label: master
      profile: dev

配置restTemplate

package com.shyb.springcloud.web.admin.ribbon.config;

import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;

/**
 * @author wzh
 * @date 2019/6/4 - 10:58
 */
@Configuration
public class RestTemplateConfiguration {
    @Bean
    @LoadBalanced
    public RestTemplate restTemplate(){
        return new RestTemplate();
    }
}

rest调用和断路调用

package com.shyb.springcloud.web.admin.ribbon.service;

import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;

/**
 * @author wzh
 * @date 2019/6/16 - 14:59
 */
@Service
public class AdminService {
    private static final String ADMIN_SERVER_URL = "http://SPRINGCLOUD-SERVICE-ADMIN/";
    @Autowired
    RestTemplate restTemplate;
    @HystrixCommand(fallbackMethod = "hiError")
    public String hello(){
        return restTemplate.getForObject(ADMIN_SERVER_URL,String.class);
    }
    @HystrixCommand(fallbackMethod = "showError")
    public String show(String message){
        return restTemplate.getForObject(ADMIN_SERVER_URL+"show?message="+message,String.class);
    }
    public String hiError(){
        return "your request bad";
    }

    public String showError(String message){
        return String.format("your message is %s, but your request bad",message);
    }
}

对外暴露接口

package com.shyb.springcloud.web.admin.ribbon.controller;

import com.shyb.springcloud.web.admin.ribbon.service.AdminService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author wzh
 * @date 2019/6/16 - 15:03
 */
@RestController
public class AdminController {
    @Autowired
    private AdminService adminService;

    @GetMapping("/")
    public String hello(){
        return adminService.hello();
    }

    @GetMapping("/show")
    public String show(String message){
        return adminService.show(message);
    }
}

feign(封装了ribbon 常用)+hystrix

建立springcloud-web-admin-feign项目,pom.xml文件如下

<?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.shyb</groupId>
        <artifactId>springcloud-dependencies</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <relativePath>../springcloud-dependencies/pom.xml</relativePath>
    </parent>

    <artifactId>springcloud-web-admin-feign</artifactId>
    <packaging>jar</packaging>

    <dependencies>
        <!-- Spring Boot Begin -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- Spring Boot End -->

        <!-- Spring Cloud Begin -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zipkin</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
        </dependency>
        <!-- Spring Cloud End -->

        <!-- 解决 thymeleaf 模板引擎一定要执行严格的 html5 格式校验问题 -->
        <dependency>
            <groupId>net.sourceforge.nekohtml</groupId>
            <artifactId>nekohtml</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>com.shyb.springcloud.web.admin.feign.WebAdminFeignApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

application.yml配置(需要feign.hystrix.enabled=true开启断路)

spring:
  cloud:
    config:
      uri: localhost:8888
      name: web-admin-feign
      label: master
      profile: prod

启动类开启服务发现、断路器和Feign注解

package com.shyb.springcloud.web.admin.ribbon;

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

/**
 * @author wzh
 * @date 2019/6/4 - 10:49
 */
@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
@EnableHystrixDashboard
public class WebAdminRibbonApplication {
    public static void main(String[] args) {
        SpringApplication.run(WebAdminRibbonApplication.class,args);
    }
}

建立业务接口，使用FeignClient注解，value指定spring.application.name,fallback指定
返回实现类，实现类的方法就是断路后的方法

package com.shyb.springcloud.web.admin.feign.service;

import com.shyb.springcloud.web.admin.feign.service.hystrix.AdminServiceHystrix;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;

/**
 * @author wzh
 * @date 2019/6/16 - 15:16
 */
@FeignClient(value = "SPRINGCLOUD-SERVICE-ADMIN",fallback = AdminServiceHystrix.class)
public interface AdminService {
    @GetMapping("/")
    public String sayHi();

    /**
     * 需要使用@RequestParam注解，该注解作为参数传递
     * @param message
     * @return
     */
    @GetMapping("/show")
    public String show(@RequestParam("message") String message);
}

package com.shyb.springcloud.web.admin.feign.service.hystrix;

import com.shyb.springcloud.web.admin.feign.service.AdminService;
import org.springframework.stereotype.Component;

/**
 * @author wzh
 * @date 2019/6/16 - 15:35
 */
@Component
public class AdminServiceHystrix implements AdminService {

    @Override
    public String sayHi() {
        return "your request is bad";
    }

    @Override
    public String show(String message) {
        return String.format("your message is %s,but it is bad",message);
    }
}

对外提供访问

package com.shyb.springcloud.web.admin.feign.controller;

import com.shyb.springcloud.web.admin.feign.service.AdminService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author wzh
 * @date 2019/6/16 - 15:17
 */
@RestController
public class AdminController {
    @Autowired
    AdminService adminService;
    @GetMapping("/")
    public String sayHi(){
        return adminService.sayHi();
    }
    @GetMapping("/show")
    public String show(String message){
        return adminService.show(message);
    }
}

配置断路监控HystrixMetricsStreamServlet

package com.shyb.springcloud.web.admin.feign.config;

import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * @author wzh
 * @date 2019/6/16 - 15:40
 */
@Configuration
public class HystrixDashboardConfiguration {
    @Bean
    public ServletRegistrationBean hystrixMetricsStreamServlet(){
        HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
        ServletRegistrationBean registrationBean = new ServletRegistrationBean(streamServlet);
        registrationBean.setLoadOnStartup(1);
        registrationBean.addUrlMappings("/hystrix.stream");
        registrationBean.setName("HystrixMetricsStreamServlet");
        return registrationBean;
    }
}

在这里插入图片描述

路由网关(zuul)

springcloud-zuul的pom.xml配置如下

<?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.shyb</groupId>
        <artifactId>springcloud-dependencies</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <relativePath>../springcloud-dependencies/pom.xml</relativePath>
    </parent>

    <artifactId>springcloud-zuul</artifactId>
    <packaging>jar</packaging>

    <dependencies>
        <!-- Spring Boot Begin -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- Spring Boot End -->

        <!-- Spring Cloud Begin -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-zuul</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <!-- Spring Cloud End -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>com.shyb.springcloud.zuul.ZuulApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

yml配置(zuul.routs配置map)

spring:
  cloud:
    config:
      uri: localhost:8080
      name: zuul
      label: master
      profile: dev

启动类配置,注册到eureka,开启zuul代理

package com.shyb.springcloud.zuul;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;

/**
 * @author wzh
 * @date 2019/6/16 - 16:00
 */
@SpringBootApplication
@EnableZuulProxy
@EnableEurekaClient
public class ZuulApplication {
    public static void main(String[] args) {
        SpringApplication.run(ZuulApplication.class,args);
    }
}

网关失败回调

package com.shyb.springcloud.zuul.provide;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.cloud.netflix.zuul.filters.route.FallbackProvider;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.client.ClientHttpResponse;
import org.springframework.stereotype.Component;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;

/**
 * @author wzh
 * @date 2019/6/16 - 16:22
 */
@Component
public class WebAdminFeignFallbackProvider implements FallbackProvider {
    @Override
    public String getRoute() {
        return "SPRINGCLOUD-WEB-ADMIN-FEIGN";
    }

    @Override
    public ClientHttpResponse fallbackResponse(String route, Throwable cause) {
        return new ClientHttpResponse() {
            /**
             * 网关向 api 服务请求失败了，但是消费者客户端向网关发起的请求是成功的，
             * 不应该把 api 的 404,500 等问题抛给客户端
             * 网关和 api 服务集群对于客户端来说是黑盒
             * @return
             * @throws IOException
             */
            @Override
            public HttpStatus getStatusCode() throws IOException {
                return HttpStatus.OK;
            }

            @Override
            public int getRawStatusCode() throws IOException {
                return HttpStatus.OK.value();
            }

            @Override
            public String getStatusText() throws IOException {
                return HttpStatus.OK.getReasonPhrase();
            }

            @Override
            public void close() {

            }

            @Override
            public InputStream getBody() throws IOException {
                ObjectMapper objectMapper = new ObjectMapper();
                Map<String, Object> map = new HashMap<>();
                map.put("status", 200);
                map.put("message", "无法连接，请检查您的网络");
                return new ByteArrayInputStream(objectMapper.writeValueAsString(map).getBytes("UTF-8"));
            }

            @Override
            public HttpHeaders getHeaders() {
                HttpHeaders headers = new HttpHeaders();
                // 和 getBody 中的内容编码一致
                headers.setContentType(MediaType.APPLICATION_JSON_UTF8);
                return headers;
            }
        };
    }
}

网关过滤器

package com.shyb.springcloud.zuul.filter;

import com.netflix.zuul.ZuulFilter;
import com.netflix.zuul.context.RequestContext;
import com.netflix.zuul.exception.ZuulException;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @author wzh
 * @date 2019/6/17 - 15:31
 */
@Component
@Slf4j
public class LoginFilter extends ZuulFilter {
    /**
     * 配置过滤类型，有四种不同生命周期的过滤器类型
     * 1. pre：路由之前
     * 2. routing：路由之时
     * 3. post：路由之后
     * 4. error：发送错误调用
     * @return
     */
    @Override
    public String filterType() {
        return "pre";
    }
    /**
     * 配置过滤的顺序
     * @return
     */
    @Override
    public int filterOrder() {
        return 0;
    }
    /**
     * 配置是否需要过滤：true/需要，false/不需要
     * @return
     */
    @Override
    public boolean shouldFilter() {
        return true;
    }
    /**
     * 过滤器的具体业务代码
     * @return
     * @throws ZuulException
     */
    @Override
    public Object run() throws ZuulException {
        RequestContext context = RequestContext.getCurrentContext();
        HttpServletRequest request = context.getRequest();
        log.info("{} >>> {}", request.getMethod(), request.getRequestURL().toString());
        String token = request.getParameter("token");
        if (token == null) {
            log.warn("Token is empty");
            context.setSendZuulResponse(false);
            context.setResponseStatusCode(401);
            try {
                HttpServletResponse httpServletResponse = context.getResponse();
                httpServletResponse.setContentType(MediaType.APPLICATION_JSON_UTF8_VALUE);
                httpServletResponse.getWriter().write("Token is empty啊啊啊");
            } catch (IOException e) {
            }
        } else {
            log.info("OK");
        }
        return null;
    }
}

启动顺序

先启动eureka,再启动config配置中心和zipKin链路追踪,再启动admin服务监控和业务
提供，再启动业务消费，最后开启zuul网关。

项目源码

config配置中心
 springcloud源码目录