Spring Cloud Alibaba-01-创建项目

其他 2021-12-13 13:47:29 阅读次数: 0

Spring Cloud Alibaba-01-创建项目

项目结构如图所示，分为三个部分

  • parent：指定springboot版本，指定dependebcies
  • dependebcies：设置Spring Cloud、Spring Cloud Alibaba等maven依赖版本
  • gateway：网关服务

image-20211213002152441

需要安装Nacos

parent

创建pom.xml，内容如下哦

<?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/>
    </parent>

    <groupId>com.sun</groupId>
    <artifactId>micro-parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>micro-parent</name>
    <packaging>pom</packaging>
    <properties>
        <java.version>1.8</java.version>
        <maven.compiler.source>${java.version}</maven.compiler.source>
        <maven.compiler.target>${java.version}</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    </properties>

    <modules>
        <module>../micro-dependencies</module>
        <module>../micro-gateway</module>
    </modules>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.sun</groupId>
                <artifactId>micro-dependencies</artifactId>
                <version>0.0.1-SNAPSHOT</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <profiles>
        <profile>
            <id>default</id>
            <activation>
                <activeByDefault>true</activeByDefault>
            </activation>
            <properties>
                <spring-javaformat.version>0.0.12</spring-javaformat.version>
            </properties>
            <build>
                <plugins>
                    <plugin>
                        <groupId>io.spring.javaformat</groupId>
                        <artifactId>spring-javaformat-maven-plugin</artifactId>
                        <version>${spring-javaformat.version}</version>
                    </plugin>
                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-surefire-plugin</artifactId>
                        <version>3.0.0-M3</version>
                        <configuration>
                            <!-- 设置默认跳过测试 -->
                            <skip>true</skip>
                            <includes>
                                <include>**/*Tests.java</include>
                            </includes>
                            <excludes>
                                <exclude>**/Abstract*.java</exclude>
                            </excludes>
                            <systemPropertyVariables>
                                <java.security.egd>file:/dev/./urandom</java.security.egd>
                                <java.awt.headless>true</java.awt.headless>
                            </systemPropertyVariables>
                        </configuration>
                    </plugin>
                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-enforcer-plugin</artifactId>
                        <version>1.4.1</version>
                        <executions>
                            <execution>
                                <id>enforce-rules</id>
                                <goals>
                                    <goal>enforce</goal>
                                </goals>
                                <configuration>
                                    <rules>
                                        <bannedDependencies>
                                            <excludes>
                                                <exclude>commons-logging:*:*</exclude>
                                            </excludes>
                                            <searchTransitive>true</searchTransitive>
                                        </bannedDependencies>
                                    </rules>
                                    <fail>true</fail>
                                </configuration>
                            </execution>
                        </executions>
                    </plugin>
                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-install-plugin</artifactId>
                        <configuration>
                            <skip>true</skip>
                        </configuration>
                    </plugin>
                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-javadoc-plugin</artifactId>
                        <configuration>
                            <skip>true</skip>
                        </configuration>
                        <inherited>true</inherited>
                    </plugin>
                </plugins>
            </build>
        </profile>
    </profiles>

    <repositories>
        <repository>
            <id>alimaven</id>
            <name>aliyun maven</name>
            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>

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

    <pluginRepositories>
        <pluginRepository>
            <id>spring-milestone</id>
            <name>Spring Milestone</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
        <pluginRepository>
            <id>spring-snapshot</id>
            <name>Spring Snapshot</name>
            <url>https://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>

</project>

dependencies

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>

    <groupId>com.sun</groupId>
    <artifactId>micro-dependencies</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>pom</packaging>

    <properties>
        <!-- Commons -->
        <feign-okhttp.version>10.3.0</feign-okhttp.version>
        <knife4j.version>3.0.2</knife4j.version>
        <mybatis-plus.version>3.4.0</mybatis-plus.version>

        <!-- Native Cloud -->
        <dubbo.version>2.7.3</dubbo.version>
        <dubbo-actuator.version>2.7.3</dubbo-actuator.version>
        <spring-cloud.version>Hoxton.SR3</spring-cloud.version>
        <spring-cloud-alibaba.verion>2.2.1.RELEASE</spring-cloud-alibaba.verion>
        <alibaba-spring-context-support.version>1.0.2</alibaba-spring-context-support.version>

        <!--    tools    -->
        <alibaba.fastjson>1.2.76</alibaba.fastjson>
        <commons-io>2.6</commons-io>
        <commons-lang3>3.9</commons-lang3>
        <google.guava>29.0-jre</google.guava>
        <httpclient>3.1</httpclient>
        <cn.hutool-all>5.3.10</cn.hutool-all>
    </properties>

    <dependencyManagement>
        <dependencies>
            <!-- Spring Cloud -->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Hoxton.SR8</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <!-- Spring Cloud Alibaba -->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${spring-cloud-alibaba.verion}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <!-- Apache Dubbo -->
            <dependency>
                <groupId>org.apache.dubbo</groupId>
                <artifactId>dubbo</artifactId>
                <version>${dubbo.version}</version>
                <exclusions>
                    <exclusion>
                        <groupId>org.springframework</groupId>
                        <artifactId>spring</artifactId>
                    </exclusion>
                    <exclusion>
                        <groupId>javax.servlet</groupId>
                        <artifactId>servlet-api</artifactId>
                    </exclusion>
                    <exclusion>
                        <groupId>log4j</groupId>
                        <artifactId>log4j</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
            <dependency>
                <groupId>org.apache.dubbo</groupId>
                <artifactId>dubbo-spring-boot-starter</artifactId>
                <version>${dubbo.version}</version>
            </dependency>
            <dependency>
                <groupId>org.apache.dubbo</groupId>
                <artifactId>dubbo-registry-nacos</artifactId>
                <version>${dubbo.version}</version>
            </dependency>
            <dependency>
                <groupId>org.apache.dubbo</groupId>
                <artifactId>dubbo-spring-boot-actuator</artifactId>
                <version>${dubbo-actuator.version}</version>
            </dependency>
            <dependency>
                <groupId>com.alibaba.spring</groupId>
                <artifactId>spring-context-support</artifactId>
                <version>${alibaba-spring-context-support.version}</version>
            </dependency>

            <!-- DataSource -->
            <dependency>
                <groupId>org.postgresql</groupId>
                <artifactId>postgresql</artifactId>
                <scope>runtime</scope>
            </dependency>
            <dependency>
                <groupId>com.zaxxer</groupId>
                <artifactId>HikariCP</artifactId>
            </dependency>
            <dependency>
                <groupId>com.baomidou</groupId>
                <artifactId>mybatis-plus-boot-starter</artifactId>
                <version>${mybatis-plus.version}</version>
            </dependency>




            <!--json工具类-->
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>${alibaba.fastjson}</version>
            </dependency>

            <dependency>
                <groupId>commons-io</groupId>
                <artifactId>commons-io</artifactId>
                <version>${commons-io}</version>
            </dependency>

            <dependency>
                <groupId>org.apache.commons</groupId>
                <artifactId>commons-lang3</artifactId>
                <version>${commons-lang3}</version>
            </dependency>

            <dependency>
                <groupId>com.google.guava</groupId>
                <artifactId>guava</artifactId>
                <version>${google.guava}</version>
            </dependency>

            <dependency>
                <groupId>commons-httpclient</groupId>
                <artifactId>commons-httpclient</artifactId>
                <version>${httpclient}</version>
            </dependency>

            <dependency>
                <groupId>cn.hutool</groupId>
                <artifactId>hutool-all</artifactId>
                <version>${cn.hutool-all}</version>
            </dependency>
            <!--    API 文档    -->
            <dependency>
                <groupId>com.github.xiaoymin</groupId>
                <artifactId>knife4j-spring-boot-starter</artifactId>
                <version>${knife4j.version}</version>
            </dependency>
            <!--分页插件-->
            <dependency>
                <groupId>com.github.pagehelper</groupId>
                <artifactId>pagehelper-spring-boot-starter</artifactId>
                <version>1.3.0</version>
            </dependency>

        </dependencies>
    </dependencyManagement>

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

    <pluginRepositories>
        <pluginRepository>
            <id>spring-milestone</id>
            <name>Spring Milestone</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
        <pluginRepository>
            <id>spring-snapshot</id>
            <name>Spring Snapshot</name>
            <url>https://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>
</project>

gateway

网关的配置如下

image-20211213002446389

application.yml

spring:
  profiles:
    active: dev
#    active: prod

application-dev.yml

server:
  port: 7300
spring:
  application:
    # 应用名称
    name: micro-gateway
  main:
    allow-bean-definition-overriding: true
  cloud:
    # 使用 Nacos 作为服务注册发现
    nacos:
      discovery:
        server-addr: ${
    
    base.config.nacos.hostname}:${
    
    base.config.nacos.port}
    # 路由网关配置
    gateway:
      # 配置路由规则
      routes:
        # 采用自定义路由 ID（有固定用法，不同的 id 有不同的功能，详见：https://cloud.spring.io/spring-cloud-gateway/2.0.x/single/spring-cloud-gateway.html#gateway-route-filters）
        - id: micro-oauth
          # 采用 LoadBalanceClient 方式请求，以 lb:// 开头，后面的是注册在 Nacos 上的服务名
          uri: lb://micro-oauth
          # Predicate 翻译过来是“谓词”的意思，必须，主要作用是匹配用户的请求，有很多种用法
          predicates:
            # 路径匹配，以 api 开头，直接配置是不生效的，看 filters 配置
            - Path=/oauth/**
          filters:
            - StripPrefix=1
# 配置日志级别，方别调试
logging:
  level:
    org.springframework.cloud.gateway: debug

base:
  config:
    nacos:
      hostname: 192.168.10.100
      port: 8848

GatewayApplication.java 启动类

package com.sun.gateway;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.gateway.discovery.DiscoveryClientRouteDefinitionLocator;
import org.springframework.cloud.gateway.discovery.DiscoveryLocatorProperties;
import org.springframework.cloud.gateway.route.RouteDefinitionLocator;
import org.springframework.context.annotation.Bean;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.HttpStatus;
import org.springframework.http.codec.ServerCodecConfigurer;
import org.springframework.http.codec.support.DefaultServerCodecConfigurer;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.web.cors.reactive.CorsUtils;
import org.springframework.web.server.ServerWebExchange;
import org.springframework.web.server.WebFilter;
import org.springframework.web.server.WebFilterChain;
import reactor.core.publisher.Mono;

/**
 * @author Administrator
 */
@SpringBootApplication
@EnableDiscoveryClient
public class GatewayApplication {
    
    

    // ----------------------------- 解决跨域 Begin -----------------------------

    private static final String ALL = "*";
    private static final String MAX_AGE = "3600L";

    @Bean
    public RouteDefinitionLocator discoveryClientRouteDefinitionLocator(DiscoveryClient discoveryClient, DiscoveryLocatorProperties properties) {
    
    
        return new DiscoveryClientRouteDefinitionLocator(discoveryClient, properties);
    }

    @Bean
    public ServerCodecConfigurer serverCodecConfigurer() {
    
    
        return new DefaultServerCodecConfigurer();
    }

    @Bean
    public WebFilter corsFilter() {
    
    
        return (ServerWebExchange ctx, WebFilterChain chain) -> {
    
    
            ServerHttpRequest request = ctx.getRequest();
            if (!CorsUtils.isCorsRequest(request)) {
    
    
                return chain.filter(ctx);
            }
            HttpHeaders requestHeaders = request.getHeaders();
            ServerHttpResponse response = ctx.getResponse();
            HttpMethod requestMethod = requestHeaders.getAccessControlRequestMethod();
            HttpHeaders headers = response.getHeaders();
            headers.add(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, requestHeaders.getOrigin());
            headers.addAll(HttpHeaders.ACCESS_CONTROL_ALLOW_HEADERS, requestHeaders.getAccessControlRequestHeaders());
            if (requestMethod != null) {
    
    
                headers.add(HttpHeaders.ACCESS_CONTROL_ALLOW_METHODS, requestMethod.name());
            }
            headers.add(HttpHeaders.ACCESS_CONTROL_ALLOW_CREDENTIALS, "true");
            headers.add(HttpHeaders.ACCESS_CONTROL_EXPOSE_HEADERS, ALL);
            headers.add(HttpHeaders.ACCESS_CONTROL_MAX_AGE, MAX_AGE);
            if (request.getMethod() == HttpMethod.OPTIONS) {
    
    
                response.setStatusCode(HttpStatus.OK);
                return Mono.empty();
            }
            return chain.filter(ctx);
        };
    }

    // ----------------------------- 解决跨域 End -----------------------------

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

至此一个最简单的spring cloud 已经完成

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