SpringCloud知识01-编程知识

SpringCloud知识01

1、数据库创建选择

2、定时任务的实现方式

3、分片原理

4、框架图

5、XXL-Job报错Logback configuration error detected

解决：

（1）

		<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId><exclusions><exclusion><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-logging</artifactId></exclusion></exclusions></dependency>

（2）

 		<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId><exclusions><exclusion><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-logging</artifactId></exclusion></exclusions></dependency>

6、xxl-job配置流程

（1）启动拉下来的文件

xxl-job: 一个分布式任务调度平台，其核心设计目标是开发迅速、学习简单、轻量级、易扩展。现已开放源代码并接入多家公司线上产品线，开箱即用。

(2)访问http://localhost:8080/xxl-job-admin/toLogin

输入账号密码admin 123456

(3)yml配置

server:port: 4000xxl:job:admin:addresses: http://127.0.0.1:8080/xxl-job-adminaccessToken: default_tokenexecutor:appname: xxl-job-executor-sampleaddress:ip: 127.0.0.1port: 8081logpath: /data/applogs/xxl-job/jobhandlerlogretentiondays: 30

（4）config配置信息

package com.smart.community.xxl.config;import com.xxl.job.core.executor.impl.XxlJobSpringExecutor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;/*** @author liuhuitang*/
@Configuration
public class XxlJobConfig {private Logger logger = LoggerFactory.getLogger(XxlJobConfig.class);@Value("${xxl.job.admin.addresses}")private String adminAddresses;@Value("${xxl.job.accessToken}")private String accessToken;@Value("${xxl.job.executor.appname}")private String appname;@Value("${xxl.job.executor.address}")private String address;@Value("${xxl.job.executor.ip}")private String ip;@Value("${xxl.job.executor.port}")private int port;@Value("${xxl.job.executor.logpath}")private String logPath;@Value("${xxl.job.executor.logretentiondays}")private int logRetentionDays;@Beanpublic XxlJobSpringExecutor xxlJobExecutor() {logger.info(">>>>>>>>>>> xxl-job config init.");XxlJobSpringExecutor xxlJobSpringExecutor = new XxlJobSpringExecutor();xxlJobSpringExecutor.setAdminAddresses(adminAddresses);xxlJobSpringExecutor.setAppname(appname);xxlJobSpringExecutor.setAddress(address);xxlJobSpringExecutor.setIp(ip);xxlJobSpringExecutor.setPort(port);xxlJobSpringExecutor.setAccessToken(accessToken);xxlJobSpringExecutor.setLogPath(logPath);xxlJobSpringExecutor.setLogRetentionDays(logRetentionDays);return xxlJobSpringExecutor;}/*** 针对多网卡、容器内部署等情况，可借助 "spring-cloud-commons" 提供的 "InetUtils" 组件灵活定制注册IP；**      1、引入依赖：*          <dependency>*             <groupId>org.springframework.cloud</groupId>*             <artifactId>spring-cloud-commons</artifactId>*             <version>${version}</version>*         </dependency>**      2、配置文件，或者容器启动变量*          spring.cloud.inetutils.preferred-networks: 'xxx.xxx.xxx.'**      3、获取IP*          String ip_ = inetUtils.findFirstNonLoopbackHostInfo().getIpAddress();*/}

（5）配置job

package com.smart.community.xxl.job;import com.xxl.job.core.handler.annotation.XxlJob;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;import java.util.Date;/*** @author liuhuitang*/
@Component
public class SimpleXxlJob {@XxlJob("demoJobHandler")public void demoJobHandler(){System.out.println("执行定时任务，执行时间："+new Date());}}