springcloud搭建以及集成tx-lcn分布式事务解决框架

偏执的太偏执、 2021-12-10 17:09 339阅读 0赞

### 本文档采用框架版本，请严格按照文档版本，否则将可能造成版本冲突 ###

<table> 
 <thead> 
  <tr> 
   <th>框架名称</th> 
   <th>框架版本</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>springboot</td> 
   <td>2.0.4.RELEASE</td> 
  </tr> 
  <tr> 
   <td>springcloud</td> 
   <td>Finchley.SR1</td> 
  </tr> 
  <tr> 
   <td>jdk</td> 
   <td>1.8</td> 
  </tr> 
  <tr> 
   <td>tx-lcn</td> 
   <td>5.0.2.RELEASE</td> 
  </tr> 
 </tbody> 
</table>

##### 使用了哪些springcloud组件 #####

<table> 
 <thead> 
  <tr> 
   <th>组件名称</th> 
   <th>作用</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>eureka</td> 
   <td>注册中心</td> 
  </tr> 
  <tr> 
   <td>zuul</td> 
   <td>网关</td> 
  </tr> 
  <tr> 
   <td>hystrix</td> 
   <td>断路器</td> 
  </tr> 
  <tr> 
   <td>feign</td> 
   <td>声明式远程调用组件</td> 
  </tr> 
  <tr> 
   <td>config</td> 
   <td>配置中心</td> 
  </tr> 
 </tbody> 
</table>

##### 微服务架构流程图 #####

![image][]

#### Eureka搭建流程 ####

pom文件

配置文件yml：

spring:
      security:
          user:
            name: dsj #注册中心登录用户名和密码
            password: 123456
    server:
      port: 8761
    eureka:
      client:
        register-with-eureka: false #测试环境不需要高可用
        fetch-registry: false
        service-url:
          defaultZone: http://dsj:123456@localhost:8761/eureka
      instance:
          prefer-ip-address: true #显示ip

因为新版本启动认证需要改变认证方式，我们需要在启动类的目录下新建一个config包新建一个类，如下:

package com.dsk.dsk_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;
    
    /**
     * @author 彭伟
     * @Date 2019/4/3 10:05
     * 改变认证方式
     */
    @EnableWebSecurity
    public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
        @Override
        protected void configure(HttpSecurity http) throws Exception {
            http.csrf().ignoringAntMatchers("/**").and().authorizeRequests().anyRequest().authenticated().and().httpBasic();
        }
    }

##### eureka细节问题: #####

1、Eureka Server
        提供服务注册和发现
    2、Service Provider
        服务提供方
        将自身服务注册到Eureka，从而使服务消费方能够找到
    3、Service Consumer
        服务消费方
        从Eureka获取注册服务列表，从而能够消费服务
    4,加入安全认证是为了提高安全性，防止服务信息泄漏。

最后启动类上面加上@EnableEurekaServer注解,  
到此，注册中心搭建完毕.

#### 搭建测试生产服务 ####

pom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>2.0.4.RELEASE</version>
            <relativePath/> 
        </parent>
        <groupId>com.dsk</groupId>
        <artifactId>dsk_xcx</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>dsk_xcx</name>
        <description>Demo project for Spring Boot</description>
    
        <properties>
            <java.version>1.8</java.version>
            <spring-cloud.version>Finchley.SR1</spring-cloud.version>
        </properties>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-actuator</artifactId>
            </dependency>
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>2.0.0</version>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            </dependency>
    
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <scope>runtime</scope>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid-spring-boot-starter</artifactId>
                <version>1.1.9</version>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </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>
        </build>
    
    </project>

配置文件application.yml如下:

eureka:
      client:
        serviceUrl:
          defaultZone: http://dsj:123456@localhost:8761/eureka
      instance:
          instance-id: ${spring.cloud.client.ip-address}:${server.port}
          prefer-ip-address: true #显示ip
    server:
      port: 8070
    spring:
      application:
        name: dsk-xcx
      datasource:
        type: com.alibaba.druid.pool.DruidDataSource
        druid:
              filters: stat # 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙
              driver-class-name: com.mysql.jdbc.Driver
              url: jdbc:mysql://127.0.0.1:3306/testcloud?useUnicode=true&characterEncoding=utf-8
              username: root
              password: 
              #配置初始化大小/最小/最大
              initialSize: 1
              minIdle: 1
              maxActive: 20
              #获取连接等待超时时间
              maxWait: 60000
              #间隔多久进行一次检测，检测需要关闭的空闲连接
              timeBetweenEvictionRunsMillis: 60000
              #一个连接在池中最小生存的时间
              minEvictableIdleTimeMillis: 300000
    #开始配置mybatis
    mybatis:
      mapper-locations: classpath:mapper/*.xml #指定mapper文件地址
      type-aliases-package: com.dsk.dsk_xcx.modle #指定别名包
    logging:
      level:
        com.codingapi.txlcn: debug #配置com.dsk.dsk_xcx包下面所有类以debug日志级别输出
    mydurid: #配置druid的监控页面安全认证
      username: admin
      password: 123456
    #暴露全部的监控信息
    management:
      endpoints:
        web:
          exposure:
            include: "*"

因为此处开起了druid的监控系统，所以需要加上配置类,创建config包，代码如下:

package com.dsk.dsk_xcx.config;
    
    import com.alibaba.druid.support.http.StatViewServlet;
    import com.alibaba.druid.support.http.WebStatFilter;
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.boot.web.servlet.FilterRegistrationBean;
    import org.springframework.boot.web.servlet.ServletRegistrationBean;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    
    /**
     * @author 彭伟
     * 配置Druid监控服务，因为主类里面关闭了自动配置
     */
    @Configuration
    public class DruidConfiguration {
        @Value("${mydurid.username}")
        private String username;
        @Value("${mydurid.password}")
        private String password;
    
        @Bean
        public ServletRegistrationBean druidStatViewServle() {
            //注册服务
            ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(
                    new StatViewServlet(), "/druid/*");
            // 白名单(为空表示,所有的都可以访问,多个IP的时候用逗号隔开)
            servletRegistrationBean.addInitParameter("allow", "127.0.0.1");
            // IP黑名单 (存在共同时，deny优先于allow)
            servletRegistrationBean.addInitParameter("deny", "127.0.0.2");
            // 设置登录的用户名和密码
            servletRegistrationBean.addInitParameter("loginUsername", username);
            servletRegistrationBean.addInitParameter("loginPassword", password);
            // 是否能够重置数据.
            servletRegistrationBean.addInitParameter("resetEnable", "false");
            return servletRegistrationBean;
        }
    
        @Bean
        public FilterRegistrationBean druidStatFilter() {
            FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(
                    new WebStatFilter());
            // 添加过滤规则
            filterRegistrationBean.addUrlPatterns("/*");
            // 添加不需要忽略的格式信息
            filterRegistrationBean.addInitParameter("exclusions",
                    "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
            System.out.println("druid初始化成功!");
            return filterRegistrationBean;
    
        }
    }

因为此处测试采用的是mybatis框架的动态mapper来进行持久化操作，所以需要在配置文件中指定mapper文件位置，我的在resource目录下新建了一个mapper文件，并且配置了。

package com.dsk.dsk_xcx;
    
    import com.codingapi.txlcn.tc.config.EnableDistributedTransaction;
    import org.mybatis.spring.annotation.MapperScan;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
    
    @SpringBootApplication
    @EnableEurekaClient//注册到eureka
    @MapperScan("com.dsk.dsk_xcx.dao")//mybatis动态代理的mapper包
    public class DskXcxApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(DskXcxApplication.class, args);
            System.out.println("启动成功......");
        }
    
    }

##### 测试生成服务心得 #####

1,增加了druid监控系统，让我们可以清楚看到哪些慢sql以及连接池当前状态信息等。从此节省了我们定位慢sql的时间。
    2，因为开启监控所以需要重新对其进行配置。
    3，访问方式当前服务ip+port/durid/index.html

#### 搭建测试消费服务 ####

pom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>2.0.4.RELEASE</version>
            <relativePath/> 
        </parent>
        <groupId>com.dsj</groupId>
        <artifactId>dsk_consumer</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>dsk_consumer</name>
        <description>Demo project for Spring Boot</description>
    
        <properties>
            <java.version>1.8</java.version>
            <spring-cloud.version>Finchley.SR1</spring-cloud.version>
        </properties>
    
        <dependencies>
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>2.0.0</version>
            </dependency>
            
    
            
            
            <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.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
            </dependency>
            
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <scope>runtime</scope>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid-spring-boot-starter</artifactId>
                <version>1.1.9</version>
            </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>
        </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>
        </build>
    
    </project>

配置文件如下:

eureka:
      client:
        serviceUrl:
          defaultZone: http://dsj:123456@localhost:8761/eureka
      instance:
        instance-id: ${spring.cloud.client.ip-address}:${server.port}
        prefer-ip-address: true #显示ip
    server:
      port: 8080
    spring:
      datasource:
        type: com.alibaba.druid.pool.DruidDataSource
        druid:
              filters: stat # 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙
              driver-class-name: com.mysql.jdbc.Driver
              url: jdbc:mysql://***:3306/testcloud?useUnicode=true&characterEncoding=utf-8
              username: root
              password: ***
              #配置初始化大小/最小/最大
              initialSize: 1
              minIdle: 1
              maxActive: 20
              #获取连接等待超时时间
              maxWait: 60000
              #间隔多久进行一次检测，检测需要关闭的空闲连接
              timeBetweenEvictionRunsMillis: 60000
              #一个连接在池中最小生存的时间
              minEvictableIdleTimeMillis: 300000
    #开始配置mybatis
    mybatis:
      mapper-locations: classpath:mapper/*.xml #指定mapper文件地址
      type-aliases-package: com.dsj.dsk_consumer.modle #指定别名包
    logging:
      level:
        com.codingapi.txlcn: debug #配置com.dsj.dsk_consumer包下面所有类以debug日志级别输出
    mydurid: #配置druid的监控页面安全认证
      username: admin
      password: 123456
    #修改调用超时时间,feign
    feign:
      hystrix:
        enabled: true
      client:
        config:
          default:
            connectTimeout: 3000
            readTimeout: 3000
    #设置超时时间,hystrix
    hystrix:
      command:
        default:
          execution:
            isolation:
              thread:
                timeoutInMilliseconds: 3000
    #暴露全部的监控信息
    management:
      endpoints:
        web:
          exposure:
            include: "*"

同样开起了连接池监控后台:需要重复生产者操作。

package com.dsj.dsk_consumer;
    
    import com.codingapi.txlcn.tc.config.EnableDistributedTransaction;
    import org.mybatis.spring.annotation.MapperScan;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
    import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
    import org.springframework.cloud.openfeign.EnableFeignClients;
    
    @SpringBootApplication
    @EnableEurekaClient//eureka客户端
    @MapperScan("com.dsj.dsk_consumer.dao")//mybatis扫描mapper包
    @EnableCircuitBreaker//Hystrix
    @EnableFeignClients(basePackages = "com.dsj.dsk_consumer.feign")//开启feign，注意一定要指定包，要不然会报错，版本原因
    public class DskConsumerApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(DskConsumerApplication.class, args);
        }
    }

feign和断路器的使用:

package com.dsj.dsk_consumer.feign;
    
    import com.dsj.dsk_consumer.modle.Test;
    import org.springframework.cloud.openfeign.FeignClient;
    import org.springframework.web.bind.annotation.RequestBody;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    
    
    /**
     * @author 彭伟
     * @Date 2019/4/3 13:58
     * api接口
     */
    @FeignClient(name = "dsk-xcx", fallback = HystrixClientFallback.class)
    //name中是被调用方的spring.application.name,fallback断路器返回结果
    public interface TestFeignClient {
        @RequestMapping(value = "/test/findAll", method = RequestMethod.GET)
        Object findAll();
    
        //    consumes = "application/json"
        @RequestMapping(value = "/test/add", method = RequestMethod.POST,consumes = "application/json")
        String insert(@RequestBody Test test);
    }

feign回滚操作，需要实现feign接口并重写方法

package com.dsj.dsk_consumer.feign;
    
    
    import com.dsj.dsk_consumer.modle.Test;
    import org.springframework.stereotype.Component;
    
    
    /**
     * @author 彭伟
     * @Date 2019/4/3 14:16
     */
    @Component
    public class HystrixClientFallback implements TestFeignClient {
        @Override
        public Object findAll() {
            return "失败";
        }
    
        @Override
        public String insert(Test test) {
            return "失败";
        }
    }

最后在断路器中进行异常通知操作:

@GetMapping("/findAll")
        @HystrixCommand(fallbackMethod = "findAllFail")
        public Object findAll(HttpServletRequest request) {
            return feignClient.findAll();
        }
    
        //注意，方法签名一定要要和api方法一致
        private Object findAllFail(HttpServletRequest request) {
            //监控报警
            String saveOrderKye = "dsk-xcx";
            String sendValue = "";
    //        String sendValue = redisTemplate.opsForValue().get(saveOrderKye);
            final String ip = request.getRemoteAddr();
            new Thread(() -> {
                if (StringUtils.isBlank(sendValue)) {
                    System.out.println("紧急短信，调用失败，请离开查找原因,ip地址是=" + ip);
                    //发送一个http请求，调用短信服务 TODO
    //                redisTemplate.opsForValue().set(saveOrderKye, "save-order-fail", 20, TimeUnit.SECONDS);
    
                } else {
                    System.out.println("已经通知开发人员，20秒内不重复发送");
                }
    
            }).start();
            Map<String, Object> msg = new HashMap<>();
            msg.put("code", -1);
            msg.put("msg", "访问人数太多，您被挤出来了，稍等重试");
            return msg;
        }

##### 搭建消费者是的心得 #####

1，因为消费者端集成了Hystrix和feign等组件，但是因为cloud版本原因需要注意maven坐标以及配置问题。
    2，同时配置文件特别需要注意的是feign和Hystrix都需要配置超时时间，建议配成一样的，如果不配成一样的会以Hystrix为准。
    3，因为springcloud的ioc容器是父子容器，意味着feign包下面的类其实又是另一个ioc容器，所以当前版本不需要在启动类外层目录下创建新的包，但是需要指定包名。

#### 网关zuul搭建步骤: ####

pom文件:

配置文件如下:

eureka:
      client:
        serviceUrl:
          defaultZone: http://dsj:123456@localhost:8761/eureka
      instance:
        instance-id: ${spring.cloud.client.ip-address}:${server.port}
        prefer-ip-address: true #显示ip
    server:
      port: 8002
    spring:
      servlet:
        multipart:
          max-file-size: 100Mb
          max-request-size: 100Mb
    ribbon:
        ReadTimeout: 5000
        ConnectTimeout: 5000
    zuul:
      routes:
        api-a:
          path: /api-xcx/**
          service-id: dsk-xcx
        api-b:
          path: /api-cu/**
          service-id: dsk-consumer
    #处理请求头中敏感信息被过滤问题,放空就不会导致下游服务取不到cookie问题
      sensitive-headers:

启动类:

package com.dsj.dsk_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;
    import org.springframework.context.annotation.Bean;
    import org.springframework.web.cors.CorsConfiguration;
    import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
    import org.springframework.web.filter.CorsFilter;
    
    @EnableZuulProxy//zuul
    //@EnableEurekaClient //zull里面已经集成了
    @SpringBootApplication
    public class DskZuulApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(DskZuulApplication.class, args);
        }
    
    }

限流过滤器:

package com.dsj.dsk_zuul.filter;
    
    import com.google.common.util.concurrent.RateLimiter;
    import com.netflix.zuul.ZuulFilter;
    import com.netflix.zuul.context.RequestContext;
    import com.netflix.zuul.exception.ZuulException;
    import org.springframework.http.HttpStatus;
    import org.springframework.stereotype.Component;
    
    import javax.servlet.http.HttpServletRequest;
    
    import static org.springframework.cloud.netflix.zuul.filters.support.FilterConstants.PRE_TYPE;
    
    /**
     * @author 彭伟
     * @Date 2019/4/8 10:41
     * 限流
     */
    @Component
    public class CurrentFilter extends ZuulFilter {
        //每秒产生1000个令牌,根据令牌来进行限流
        private static final RateLimiter RATE_LIMITER = RateLimiter.create(1);
    
        @Override
        public String filterType() {
            return PRE_TYPE;//采用前置过滤
        }
    
        @Override
        public int filterOrder() {
            return -4;//优先级,因为限流采用最高优先级,越小优先级越高
        }
    
        @Override
        public boolean shouldFilter() {
            RequestContext requestContext = RequestContext.getCurrentContext();
            HttpServletRequest request = requestContext.getRequest();
            //获取当前请求头信息，对需要过滤的服务进行限流
            return true;
        }
    
        @Override
        public Object run() throws ZuulException {
            RequestContext requestContext = RequestContext.getCurrentContext();
            if (!RATE_LIMITER.tryAcquire()) {//没有获取到令牌，不放行并且返回响应结果,可自定义
                requestContext.setSendZuulResponse(false);
                requestContext.setResponseStatusCode(HttpStatus.TOO_MANY_REQUESTS.value());
                requestContext.setResponseBody("当前访问人数过多，您被挤出来了");
                requestContext.getResponse().setContentType("application/json;charset=UTF-8");
            }
            return null;
        }
    }

##### zuul心得 #####

1，其实就是统一了入口，需要注意的是写filter必须继承zuulfilter，需要指定前置还是后置过滤器。
    2，同时需要注意的是因为内置对cookie等敏感信息屏蔽了，需要通过配置文件对其进行打开，详细配置请看配置文件。
    3，限流需要经过准确的压测来进行综合性的评估，令牌桶算法会耗费一点资源，需要除去令牌桶算法的资源。

#### 搭建配置中心服务端 ####

pom文件:

配置文件:

spring:
      application:
        name: config-server
      cloud:
        config:
          server:
            git:
              uri: https://gitee.com/itpengwei/cloud-config #仓库地址,注意去掉.git
              username:  #用户名
              password:  #密码
              timeout: 5 #超时时间，单位为s
              default-label: master #分支
    server:
      port: 9100
    eureka:
      client:
        serviceUrl:
          defaultZone: http://dsj:123456@localhost:8761/eureka
      instance:
            instance-id: ${spring.cloud.client.ip-address}:${server.port}
            prefer-ip-address: true

启动类:

package com.dsj.dsk_config_server;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.config.server.EnableConfigServer;
    
    @SpringBootApplication
    @EnableConfigServer
    public class DskConfigServerApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(DskConfigServerApplication.class, args);
        }
    
    }

#### 客户端使用，例如我这用zuul来示范 ####

注意事项1,配置文件一定要改名成bootstrap.yml这样才能优先加载,其他配置可以全部放仓库

eureka:
      client:
        serviceUrl:
          defaultZone: http://dsj:123456@localhost:8761/eureka
      instance:
        instance-id: ${spring.cloud.client.ip-address}:${server.port}
        prefer-ip-address: true #显示ip
    #服务的名称
    spring:
      application:
        name: dsk-zuul
      #指定从哪个配置中心读取
      cloud:
        config:
          discovery:
            service-id: config-server
            enabled: true
          #建议用lable去区分环境，默认是lable是master分支
          label: master

仓库配置文件名称和服务名称一致既可；  
pom文件加入如下依赖:

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

到此就完成了  
config客户端从服务端拉去配置的操作。

##### config的心得 #####

1,服务端一定要能够连接到远程仓库。
    2，需要在客户端启动之前启动。
    3，仓库的uri需要去掉后缀.git
    4，服务端和客户端都需要指定从哪个分支拉取配置。
    5，仓库的配置文件最好和服务名一致。
    6，客户端一定要把配置文件改名成bootstrap.yml，让spring先对里面配置进行加载。

#### 搭建dashboad监控服务 ####

pom文件如下:

配置文件:

server:
      port: 8900

启动类；

package com.dsj.dsk_hystrix_dashboard;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;
    
    @SpringBootApplication
    @EnableHystrixDashboard//开启自动dashboard的自动装配，适用于单机，集群不适合
    public class DskHystrixDashboardApplication {
    //    http://localhost:8781/hystrix
    //    http://192.168.25.1:8080/actuator/hystrix.stream
        public static void main(String[] args) {
            SpringApplication.run(DskHystrixDashboardApplication.class, args);
        }
    
    }

被监控的服务需要满足以下条件

1,消费了其他服务
    2，pom文件需要添加依赖
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-actuator</artifactId>
            </dependency>
    3，然后启动监控服务浏览器输入http://localhost:8900/hystrix
    4,输入消费者服务的地址格式如下:
    http://192.168.25.1:8080/actuator/hystrix.stream
    5，将链接放入最大的那个框，点击监控，既可与被监控的服务建立连接

##### dashborad注意事项 #####

1,监控的一定要是一个消费者，被监控者一定要添加上面的mavne依赖。
    2，想看到监控数据一定要先访问那个被监控服务的接口，那个接口一定要是调用了其他服务。
    3，监控的是实时数据，具体多少秒内可以在可视化界面第二行最左边那个框里面输入，单位是ms。
    4，建议采用默认，因为监控同时也在耗费那个被监控的服务器资源。

#### 集成分布式事务协调框架tx-lcn ####

##### 第一步先搭建tx-mange事务管理器 #####

pom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>2.0.4.RELEASE</version>
            <relativePath/> 
        </parent>
        <groupId>com.dsk</groupId>
        <artifactId>tx-manger</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>tx-manger</name>
        <description>Demo project for Spring Boot</description>
    
        <properties>
            <java.version>1.8</java.version>
            <spring-cloud.version>Finchley.SR1</spring-cloud.version>
        </properties>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-data-redis</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-jdbc</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>2.0.0</version>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            </dependency>
    
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <scope>runtime</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>com.codingapi.txlcn</groupId>
                <artifactId>txlcn-tm</artifactId>
                <version>5.0.2.RELEASE</version>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid-spring-boot-starter</artifactId>
                <version>1.1.9</version>
            </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>
        </build>
    </project>

配置文件如下:

spring.application.name=tx-manager
    server.port=7970
    
    spring.datasource.driver-class-name=com.mysql.jdbc.Driver
    spring.datasource.url=jdbc:mysql://211.159.169.156:3306/tx-manager?useUnicode=true&characterEncoding=utf-8
    spring.datasource.username=root
    spring.datasource.password=dsj123456
    #指定注册中心地址
    eureka.client.serviceUrl.defaultZone= http://dsj:123456@localhost:8761/eureka
    eureka.instance.instance-id=${spring.cloud.client.ip-address}:${server.port}
    eureka.instance.prefer-ip-address=true
    
    mybatis.configuration.map-underscore-to-camel-case=true
    mybatis.configuration.use-generated-keys=true
    
    # TxManager Host Ip
    tx-lcn.manager.host=127.0.0.1
    # TxClient连接请求端口
    tx-lcn.manager.port=5800
    # 心跳检测时间(ms)
    tx-lcn.manager.heart-time=15000
    # 分布式事务超时时间
    tx-lcn.manager.dtx-time=5000
    #参数延迟删除时间单位ms
    tx-lcn.message.netty.attr-delay-time=10000
    # 事务处理并发等级. 默认为机器逻辑核心数5倍
    tx-lcn.manager.concurrent-level=128
    # 开启日志,默认为false
    tx-lcn.logger.enabled=true
    logging.level.com.codingapi=debug
    tx-lcn.logger.driver-class-name=${spring.datasource.driver-class-name}
    tx-lcn.logger.jdbc-url=${spring.datasource.url}
    tx-lcn.logger.username=${spring.datasource.username}
    tx-lcn.logger.password=${spring.datasource.password}
    
    #redis 主机
    spring.redis.host=***
    #redis 端口
    spring.redis.port=6379
    #redis 密码
    spring.redis.password=***
    tx-lcn.manager.admin-key=123456
    ##发生异常发送邮件给管理员
    #spring.mail.host=smtp.126.com
    #spring.mail.port=25
    #spring.mail.username=pw1914109147@126.com
    #spring.mail.password=
    # 异常回调开关。开启时请制定ex-url
    #tx-lcn.manager.ex-url-enabled=true
    # 事务异常通知（任何http协议地址。未指定协议时，为TM提供内置功能接口）。默认是邮件通知
    #tx-lcn.manager.ex-url=/provider/email-to/1914109147@qq.com
    #tx-lcn.manager.ex-url=http://192.168.25.1:8002/api-cu/test/findAll

启动类；

package com.dsk.txmanger;
    
    import com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceAutoConfigure;
    import com.codingapi.txlcn.tm.config.EnableTransactionManagerServer;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
    
    @SpringBootApplication
    @EnableEurekaClient
    @EnableTransactionManagerServer
    //@EnableAutoConfiguration(exclude = {DruidDataSourceAutoConfigure.class})
    public class TxMangerApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(TxMangerApplication.class, args);
        }
    
    }

##### tx-manger注意事项 #####

1，pom文件最好延用上述的，要不然可能产生版本冲突，以上版本都是经过严格测试得出的。
    2，配置文件里面的服务名称不能改动。
    3，事务消息端口不要与其他服务端口冲突。

##### 客户端使用 #####

pom文件加入如下依赖:

<dependency>
                <groupId>com.codingapi.txlcn</groupId>
                <artifactId>txlcn-tc</artifactId>
                <version>5.0.2.RELEASE</version>
            </dependency>
    
            <dependency>
                <groupId>com.codingapi.txlcn</groupId>
                <artifactId>txlcn-txmsg-netty</artifactId>
                <version>5.0.2.RELEASE</version>
            </dependency>

配置文件加入如下配置:

#lcn事务管理器ip端口
    tx-lcn:
      client:
        manager-address: 127.0.0.1:5800 #tm集群的情况下可以写多个地址，逗号隔开
    #  ribbon:
    #    loadbalancer:
    #      dtx:
    #        enabled: true #是否采用轮训

启动类加上注解:@EnableDistributedTransaction  
最后事务发起方A调用了事务参与方B，那么两者都需要加上

@LcnTransaction//分布式事务
    @Transactional//本地事务注解

##### 分布式事务客户端注意事项 #####

1,service层里面一定不要用一个try把几个db操作都给包起来，可以把try放到controller里面去。要不然会造成事务不回滚，框架会认为没有抛出事务。
    2，配置的事务管理器ip一定要和tm的一致，端口是事务消息端口，并不是服务端口。
    3，集群配置在配置文件里面有详细说明。

#### 参考资料 ####

[tx-lcn管网][tx-lcn]

[tx-lcn的github社区][tx-lcn_github]

[dubbo和springcloud对比][dubbo_springcloud]

[注册中心eureka和其他组件资料][eureka]

[ribbon自定义资料][ribbon]

[Hystrix资料][Hystrix]

[微服务系列文章-方志鹏][-]

[微服务系列-纯洁的微笑][-]

[微服务系列-江南一点雨][- 1]

[image]: /images/20211210/0c1c2552dc6345b8b1788ac4e68b4df3.png
[tx-lcn]: http://www.txlcn.org/zh-cn/docs/preface.html
[tx-lcn_github]: https://github.com/codingapi/tx-lcn/issues
[dubbo_springcloud]: https://blog.csdn.net/zhangweiwei2020/article/details/78646252
[eureka]: http://cloud.spring.io/spring-cloud-netflix/single/spring-cloud-netflix.html#spring-cloud-eureka-server
[ribbon]: http://cloud.spring.io/spring-cloud-static/Finchley.RELEASE/single/spring-cloud.html#_customizing_the_ribbon_client_by_setting_properties
[Hystrix]: https://github.com/Netflix/Hystrix/wiki
[-]: https://www.fangzhipeng.com/spring-cloud.html
[- 1]: https://wangsong.blog.csdn.net/column/info/17373/2