微服务架构JAVA，SpringCloud，日志分析，工作流，高并发解决方案，tomcat负载均衡，大型电商项目实战

要会用，首先要了解。图懒得画，借鉴网上大牛的图吧，springcloud组建架构如图：

微服务架构的应用场景：

1、系统拆分，多个子系统

2、每个子系统可部署多个应用，应用之间负载均衡实现

3、需要一个服务注册中心，所有的服务都在注册中心注册，负载均衡也是通过在注册中心注册的服务来使用一定策略来实现。

4、所有的客户端都通过同一个网关地址访问后台的服务，通过路由配置，网关来判断一个URL请求由哪个服务处理。请求转发到服务上的时候也使用负载均衡。

5、服务之间有时候也需要相互访问。例如有一个用户模块，其他服务在处理一些业务的时候，要获取用户服务的用户数据。

6、需要一个断路器，及时处理服务调用时的超时和错误，防止由于其中一个服务的问题而导致整体系统的瘫痪。

7、还需要一个监控功能，监控每个服务调用花费的时间等。

Spring Cloud的优势
产出于spring大家族，spring在企业级开发框架中无人能敌，来头很大，可以保证后续的更新、完善。比如dubbo现在就差不多死了
有spring Boot 这个独立干将可以省很多事，大大小小的活spring boot都搞的挺不错。
作为一个微服务治理的大家伙，考虑的很全面，几乎服务治理的方方面面都考虑到了，方便开发开箱即用。
Spring Cloud 活跃度很高，教程很丰富，遇到问题很容易找到解决方案
轻轻松松几行代码就完成了熔断、均衡负责、服务中心的各种平台功能
废话少说，看代码：
项目架构：

一、discovery服务注册发现

①、pom.xml

②、DiscoveryApplication
package com.wisely.discovery;

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

@SpringBootApplication
@EnableEurekaServer //1
public class DiscoveryApplication {

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

}

③、application.yml
server:
port: 8761

endpoints:
shutdown:
enabled: true
sensitive: false
eureka:
instance:
prefer-ip-address: true #启用IP方式
ip-address: 127.0.0.1
client:
register-with-eureka: false #指向其他注册中心地址
fetch-registry: false
service-url:
defualtZone: http://127.0.0.1:8762/eureka/

二、monitor监控服务
①、pom.xml

<?xml version="1.0"?>
<project
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
   xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <modelVersion>4.0.0</modelVersion>
   <parent>
       <groupId>com.gt</groupId>
       <artifactId>popuserver</artifactId>
       <version>0.0.1-SNAPSHOT</version>
   </parent>
   <groupId>com.poputar</groupId>
   <artifactId>popumonitor</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <name>popumonitor</name>
   <url>http://maven.apache.org</url>
   <properties>
       <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
   <dependencies>
       <dependency>
           <groupId>org.springframework.cloud</groupId>
           <artifactId>spring-cloud-starter</artifactId>
           <version>1.1.7.RELEASE</version>
       </dependency>
       <dependency>
           <groupId>org.springframework.cloud</groupId>
           <artifactId>spring-cloud-starter-hystrix-dashboard</artifactId>
           <version>1.2.2.RELEASE</version>
       </dependency>
       <dependency>
           <groupId>org.springframework.cloud</groupId>
           <artifactId>spring-cloud-starter-turbine</artifactId>
           <version>1.1.7.RELEASE</version>
       </dependency>
       <dependency>
           <groupId>junit</groupId>
           <artifactId>junit</artifactId>
           <version>3.8.1</version>
           <scope>test</scope>
       </dependency>
   </dependencies>
   <build>
       <plugins>
           <plugin>
               <groupId>com.spotify</groupId>
               <artifactId>docker-maven-plugin</artifactId>
               <configuration>
                   <imageName>${project.name}:${project.version}</imageName>
                   <dockerDirectory>${project.basedir}/src/main/docker</dockerDirectory>
                   <skipDockerBuild>false</skipDockerBuild>
                   <resources>
                       <resource>
                           <directory>${project.build.directory}</directory>
                           <include>${project.build.finalName}.jar</include>
                       </resource>
                   </resources>
               </configuration>
           </plugin>
       </plugins>
   </build>
</project>

②、PopumonitorApplication
package com.poputar;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;
import org.springframework.cloud.netflix.turbine.EnableTurbine;

/**
* 监控服务
*
*/
@SpringBootApplication
@EnableEurekaClient
@EnableHystrixDashboard
@EnableTurbine
public class PopumonitorApplication
{
public static void main( String[] args )
{
SpringApplication.run(PopumonitorApplication.class, args);
}
}

③、application.yml
server:
port: 8989

④、bootstrap.yml
spring:
application:
name: monitor

eureka:
instance:
nonSecurePort: ${server.port:8989}
client:
serviceUrl:
defaultZone: http://${eureka.host:localhost}:${eureka.port:8761}/eureka/

三、配置服务
①、pom.xml

<?xml version="1.0"?>
<project
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
   xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <modelVersion>4.0.0</modelVersion>
   <parent>
       <groupId>com.gt</groupId>
       <artifactId>popuserver</artifactId>
       <version>0.0.1-SNAPSHOT</version>
   </parent>
   <groupId>com.poputar</groupId>
   <artifactId>popuconfig</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <name>popuconfig</name>
   <url>http://maven.apache.org</url>
   <properties>
       <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
   <dependencies>
       <dependency>
           <groupId>org.springframework.cloud</groupId>
           <artifactId>spring-cloud-starter</artifactId>
           <version>1.1.7.RELEASE</version>
       </dependency>
       <dependency>
           <groupId>org.springframework.cloud</groupId>
           <artifactId>spring-cloud-config-server</artifactId>
           <version>1.2.2.RELEASE</version>
       </dependency>
       <dependency>
           <groupId>org.springframework.cloud</groupId>
           <artifactId>spring-cloud-starter-eureka</artifactId>
           <version>1.1.7.RELEASE</version>
       </dependency>
       <dependency>
           <groupId>junit</groupId>
           <artifactId>junit</artifactId>
           <version>3.8.1</version>
           <scope>test</scope>
       </dependency>
   </dependencies>
   <build>
       <plugins>
           <plugin>
               <groupId>com.spotify</groupId>
               <artifactId>docker-maven-plugin</artifactId>
               <configuration>
                   <imageName>${project.name}:${project.version}</imageName>
                   <dockerDirectory>${project.basedir}/src/main/docker</dockerDirectory>
                   <skipDockerBuild>false</skipDockerBuild>
                   <resources>
                       <resource>
                           <directory>${project.build.directory}</directory>
                           <include>${project.build.finalName}.jar</include>
                       </resource>
                   </resources>
               </configuration>
           </plugin>
       </plugins>
   </build>
</project>

②、PopuconfigApplication

package org.popuconfig;

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;

/**
* 配置服务
*
*/
@SpringBootApplication
@EnableConfigServer
@EnableEurekaClient
public class PopuconfigApplication
{
public static void main( String[] args )
{
SpringApplication.run(PopuconfigApplication.class, args);
}
}

③、application.yml 配置文件放本地，读者可以自己研究下放在git服务上
spring:
cloud:
config:
server:
native:
search-locations: classpath:/config

server:
port: 8762

④、bootstrap.yml
spring:
application:
name: config #1
profiles:
active: native #2

eureka:
instance:
non-secure-port: ${server.port:8762} #3
metadata-map:
instanceId: ${spring.application.name}
client:
service-url:
defaultZone: http://${eureka.host:localhost}:${eureka.port:8761}/eureka/ #5

⑤、src/main/resources/config下放应用所需的配置文件，命名方式跟appname相同，切记此处的命名是有规范的

四、用户服务

①、pom.xml 需要引入外部jar包时，我已做注释，如下：

<?xml version="1.0"?>
<project
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
   xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <modelVersion>4.0.0</modelVersion>
   <parent>
       <groupId>com.gt</groupId>
       <artifactId>popuserver</artifactId>
       <version>0.0.1-SNAPSHOT</version>
   </parent>
   <artifactId>popuman</artifactId>
   <name>popuman</name>
   <url>http://www.popumusic</url>

   <dependencies>
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-data-redis</artifactId>
       </dependency>
       <dependency>
           <groupId>org.springframework.cloud</groupId>
           <artifactId>spring-cloud-starter-eureka</artifactId>
       </dependency>
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-data-jpa</artifactId>
       </dependency>
       <dependency>
           <groupId>mysql</groupId>
           <artifactId>mysql-connector-java</artifactId>
       </dependency>
       <dependency>
           <groupId>org.springframework.cloud</groupId>
           <artifactId>spring-cloud-starter-config</artifactId>
       </dependency>

       <dependency>
           <groupId>aliyun-java-sdk-dysmsapit</groupId>
           <artifactId>aliyun-java-sdk-dysmsapi</artifactId>
           <version>1.0.0</version>
           <scope>system</scope>
           <systemPath>${project.basedir}/lib/aliyun-java-sdk-dysmsapi-1.0.0.jar</systemPath>
       </dependency>

       <dependency>
           <groupId>aliyun-java-sdk-core</groupId>
           <artifactId>aliyun-java-sdk-core</artifactId>
           <version>3.3.1</version>
           <scope>system</scope>
           <systemPath>${project.basedir}/lib/aliyun-java-sdk-core-3.3.1.jar</systemPath>
       </dependency>

   </dependencies>

   <build>
       <plugins>
           <plugin>
               <groupId>org.springframework.boot</groupId>
               <artifactId>spring-boot-maven-plugin</artifactId>
           </plugin>
       </plugins>

       
       
   </build>
</project>

②、PopumanApplication 增加了国际化配置
package com.gt;

import javax.validation.Validator;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.support.ResourceBundleMessageSource;
import org.springframework.validation.beanvalidation.LocalValidatorFactoryBean;

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

   public ResourceBundleMessageSource getMessageSource() throws Exception {
ResourceBundleMessageSource rbms = new ResourceBundleMessageSource();
rbms.setDefaultEncoding("UTF-8");
rbms.setBasenames("i18n/ValidationMessages");
return rbms;
}

@Bean
public Validator getValidator() throws Exception {
LocalValidatorFactoryBean validator = new LocalValidatorFactoryBean();
validator.setValidationMessageSource(getMessageSource());
return validator;
}
}

③、LocaleConfig 拦截器
package com.gt;

import java.util.Locale;

import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.LocaleResolver;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
import org.springframework.web.servlet.i18n.SessionLocaleResolver;

@Configuration
@EnableAutoConfiguration
@ComponentScan
public class LocaleConfig extends WebMvcConfigurerAdapter {

   @Bean
public LocaleResolver localeResolver() {
SessionLocaleResolver slr = new SessionLocaleResolver();
// 默认语言
slr.setDefaultLocale(Locale.US);
return slr;
}

@Bean
public LocaleChangeInterceptor localeChangeInterceptor() {
LocaleChangeInterceptor lci = new LocaleChangeInterceptor();
// 参数名
lci.setParamName("lang");
return lci;
}

@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(localeChangeInterceptor());
}

}

④、MessageManager 读取国际化文件内容

package com.gt;

import java.util.Locale;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.MessageSource;
import org.springframework.context.i18n.LocaleContextHolder;
import org.springframework.stereotype.Component;

@Component
public class MessageManager {

private static MessageSource messageSource;

public static String getMsg(String key) {
Locale locale = LocaleContextHolder.getLocale();
return messageSource.getMessage(key, , locale);
}

public static String getMsg(String key, String... arg) {
Locale locale = LocaleContextHolder.getLocale();
Object[] args = new Object[arg.length];
for (int i = 0; i < arg.length; i++) {
args[i] = arg[i];
}
return messageSource.getMessage(key, args, locale);
}

@Autowired(required = true)
public void setMessageSource(MessageSource messageSource) {
MessageManager.messageSource = messageSource;
}
}

⑤、application.yml

debug: true
server:
port: 8781

⑥、bootstrap.yml docker环境下部署时需要指定ip，否则找不到配置服务，读取不了配置中心的相关配置
spring:
application:
name: popuman
cloud:
config:
enabled: true
discovery: #配置服务发现，获取配置信息配置文件命名要按照springcloud config配置文件命名规则命名
enabled: true
service-id: config
eureka:
instance:
appname: popuman
client:
service-url:
defaultZone: http://${eureka.host:localhost}:${eureka.port:8761}/eureka/

#docker环境下需指定ip才能访问
#eureka:
# instance:
# appname: popuman
# prefer-ip-address: true #启用IP方式
# ip-address: 192.168.*.**
# client:
# service-url:
# defaultZone: http://192.168.*.**:8761/eureka/

⑦、logback.xml 日志分级别输出到文件，dubug，error级别日志输出到各自的日志文件
<configuration>

<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%d %p (%file:%line\)- %m%n</pattern>
<charset>UTF-8</charset>
</encoder>
</appender>
<appender name="popuman"
class="ch.qos.logback.core.rolling.RollingFileAppender">
<File>/Users/david/Documents/Poputar/logs/popuman.log</File>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>/Users/david/Documents/Poputar/logs/popuman.%d.%i</fileNamePattern>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">

<maxFileSize>64 MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
</rollingPolicy>
<encoder>
<pattern>
%d %p (%file:%line\)- %m%n
</pattern>
<charset>UTF-8</charset> 
</encoder>
<filter class="ch.qos.logback.classic.filter.LevelFilter"> 
       <level>ERROR</level>
       <onMatch>DENY</onMatch>
       <onMismatch>ACCEPT</onMismatch>
       </filter>
</appender>
<appender name="popuman_err"
class="ch.qos.logback.core.rolling.RollingFileAppender">
<File>/Users/david/Documents/Poputar/logs/popuman_err.log</File>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>/Users/david/Documents/Poputar/logs/popuman_err.%d.%i</fileNamePattern>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">

<maxFileSize>64 MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
</rollingPolicy>
<encoder>
<pattern>
%d %p (%file:%line\)- %m%n
</pattern>
<charset>UTF-8</charset> 
</encoder>
       <filter class="ch.qos.logback.classic.filter.LevelFilter">
           <level>ERROR</level>
           <onMatch>ACCEPT</onMatch>
           <onMismatch>DENY</onMismatch>
       </filter>
</appender>
<root level="info">
<appender-ref ref="STDOUT" />
</root>

<logger name="com.gt" level="DEBUG">
<appender-ref ref="popuman" />
<appender-ref ref="popuman_err" />
</logger>
</configuration>

五、popumusic项目代码就不贴了，同popuman项目类似。
部署到docker时，切记端口映射好，否则调不通。

六、应用之间服务的调用是通过springcloud的FeignClient调用，这种调用方式同样也是基于http协议，好处是不用我们再去封装httpclient手写post，get请求，通过调用方法的方式就可以调用其他服务接口

本架构采用springboot推荐的JPA方式来处理数据层，缓存采用redis，如果您要问，redis挂掉怎么办？那就要考虑redis的分布式，主从等，这里不做赘述。

spriingcloud是近两年新兴的微服务技术，目前我也是在学习中，如有觉得我写的有不对的地方，还请批评指正，共同交流，学习一门新技术是枯燥的，难免走很多弯路，但是当你突破难关时，那样的轻松是何等畅快！在这里也感谢CSDN上大牛的技术文章分享，有分享才会有进步。希望本文对学习springcloud的同学有所帮助。

微服务架构JAVA，SpringCloud，日志分析，工作流，高并发解决方案，tomcat负载均衡，大型电商项目实战

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