初始化git 基础代码
This commit is contained in:
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# Redis连接问题修复指南
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## 问题描述
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应用无法连接到Redis服务器 `192.168.200.130:6379`，导致任务调度服务异常。
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## 解决步骤
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### 1. 检查Redis服务状态
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#### 在Linux服务器上检查：
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```bash
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# 检查Redis进程
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ps aux | grep redis
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# 检查Redis端口是否监听
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netstat -tlnp | grep 6379
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# 或
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ss -tlnp | grep 6379
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```
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#### 在Windows服务器上检查：
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```powershell
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# 检查Redis进程
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Get-Process | Where-Object {$_.ProcessName -like "*redis*"}
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# 检查端口
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netstat -ano | findstr 6379
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```
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### 2. 启动Redis服务
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#### Linux:
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```bash
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# 如果使用systemd
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sudo systemctl start redis
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sudo systemctl enable redis # 设置开机自启
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# 或直接启动
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redis-server /path/to/redis.conf
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```
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#### Windows:
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```powershell
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# 如果Redis作为服务安装
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net start redis
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# 或直接运行
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redis-server.exe
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```
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### 3. 验证Redis连接
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```bash
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# 测试连接
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redis-cli -h 192.168.200.130 -p 6379 ping
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# 应该返回: PONG
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```
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### 4. 检查防火墙
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确保防火墙允许6379端口：
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```bash
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# Linux
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sudo firewall-cmd --add-port=6379/tcp --permanent
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sudo firewall-cmd --reload
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# 或使用iptables
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sudo iptables -A INPUT -p tcp --dport 6379 -j ACCEPT
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```
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### 5. 检查Redis配置
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确保Redis配置文件 `redis.conf` 中：
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```conf
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# 允许外部连接（如果需要）
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bind 0.0.0.0
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# 或
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bind 192.168.200.130
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# 保护模式（如果只允许本地，需要关闭）
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protected-mode no
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```
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### 6. 检查网络连通性
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从应用服务器测试：
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```bash
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# 测试网络连通性
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ping 192.168.200.130
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# 测试端口连通性
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telnet 192.168.200.130 6379
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# 或
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nc -zv 192.168.200.130 6379
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```
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## 临时解决方案
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如果Redis暂时无法启动，可以考虑：
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1. 使用本地Redis（修改配置文件中的Redis地址）
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2. 使用Docker运行Redis：
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```bash
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docker run -d -p 6379:6379 redis:latest
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```
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## 验证修复
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修复后，重启应用服务，观察日志中不再出现Redis连接错误。
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@@ -0,0 +1,8 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<module version="4">
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<component name="FacetManager">
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<facet type="Spring" name="Spring">
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<configuration />
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</facet>
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</component>
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</module>
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19
heima-leadnews-service/heima-leadnews-schedule/pom.xml
Normal file
19
heima-leadnews-service/heima-leadnews-schedule/pom.xml
Normal file
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>heima-leadnews-service</artifactId>
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<groupId>com.heima</groupId>
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<version>1.0-SNAPSHOT</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>heima-leadnews-schedule</artifactId>
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<properties>
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<maven.compiler.source>8</maven.compiler.source>
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<maven.compiler.target>8</maven.compiler.target>
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</properties>
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</project>
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package com.heima.schedule;
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import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
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import com.baomidou.mybatisplus.extension.plugins.inner.OptimisticLockerInnerInterceptor;
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import org.mybatis.spring.annotation.MapperScan;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import org.springframework.context.annotation.Bean;
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import org.springframework.scheduling.annotation.EnableScheduling;
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@SpringBootApplication
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@MapperScan("com.heima.schedule.mapper")
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@EnableScheduling // 开启定时任务
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public class ScheduleApplication {
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public static void main(String[] args) {
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SpringApplication.run(ScheduleApplication.class,args);
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}
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/**
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* mybatis-plus乐观锁支持
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* @return
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*/
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@Bean
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public MybatisPlusInterceptor optimisticLockerInterceptor(){
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MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
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interceptor.addInnerInterceptor(new OptimisticLockerInnerInterceptor());
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return interceptor;
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}
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}
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package com.heima.schedule.feing;
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import com.heima.apis.schedule.IScheduleClient;
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import com.heima.model.common.dtos.ResponseResult;
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import com.heima.model.schedule.dtos.Task;
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import com.heima.schedule.service.TaskService;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.web.bind.annotation.*;
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@RestController
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public class ScheduleClient implements IScheduleClient {
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@Autowired
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private TaskService taskService;
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/**
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* 添加延迟任务
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*
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* @param task
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* @return
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*/
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@PostMapping("/api/v1/task/add")
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public ResponseResult addTask(@RequestBody Task task) {
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return ResponseResult.okResult(taskService.addTask(task));
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}
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/**
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* 取消任务
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*
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* @param taskId
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* @return
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*/
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@GetMapping("/api/v1/task/{taskId}")
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public ResponseResult cancelTask(@PathVariable("taskId") long taskId){
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return ResponseResult.okResult(taskService.cancelTask(taskId));
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}
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/**
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* 按照类型和优先级拉取任务
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*
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* @param type
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* @param priority
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* @return
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*/
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@GetMapping("/api/v1/task/{type}/{priority}")
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public ResponseResult poll(@PathVariable("type") int type,@PathVariable("priority") int priority) {
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return ResponseResult.okResult(taskService.poll(type,priority));
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}
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}
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package com.heima.schedule.mapper;
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import com.baomidou.mybatisplus.core.mapper.BaseMapper;
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import com.heima.model.schedule.pojos.TaskinfoLogs;
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import org.apache.ibatis.annotations.Mapper;
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/**
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* <p>
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* Mapper 接口
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* </p>
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*
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* @author itheima
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*/
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@Mapper
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public interface TaskinfoLogsMapper extends BaseMapper<TaskinfoLogs> {
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}
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package com.heima.schedule.mapper;
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import com.baomidou.mybatisplus.core.mapper.BaseMapper;
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import com.heima.model.schedule.pojos.Taskinfo;
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import org.apache.ibatis.annotations.Mapper;
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import org.apache.ibatis.annotations.Param;
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import org.apache.ibatis.annotations.Select;
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import java.util.Date;
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import java.util.List;
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/**
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* <p>
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* Mapper 接口
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* </p>
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*
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* @author itheima
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*/
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@Mapper
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public interface TaskinfoMapper extends BaseMapper<Taskinfo> {
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public List<Taskinfo> queryFutureTime(@Param("taskType")int type, @Param("priority")int priority, @Param("future")Date future);
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}
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package com.heima.schedule.service;
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import com.heima.model.schedule.dtos.Task;
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public interface TaskService {
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/**
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* 添加任务
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* @param task
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* @return
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*/
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public long addTask(Task task);
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/**
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* 取消任务
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* @param taskId
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* @return
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*/
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public boolean cancelTask(long taskId);
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/**
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* 按照类型和优先级获取任务
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* @param type
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* @param priority
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* @return
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*/
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public Task poll(int type, int priority);
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}
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@@ -0,0 +1,261 @@
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package com.heima.schedule.service.impl;
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import com.alibaba.fastjson.JSON;
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import com.heima.common.constants.ScheduleConstants;
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import com.heima.common.redis.CacheService;
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import com.heima.model.schedule.dtos.Task;
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import com.heima.model.schedule.pojos.Taskinfo;
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import com.heima.model.schedule.pojos.TaskinfoLogs;
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import com.heima.schedule.mapper.TaskinfoLogsMapper;
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import com.heima.schedule.mapper.TaskinfoMapper;
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import com.heima.schedule.service.TaskService;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.commons.lang3.StringUtils;
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import org.springframework.beans.BeanUtils;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.scheduling.annotation.Scheduled;
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import org.springframework.stereotype.Service;
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import org.springframework.transaction.annotation.Transactional;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.Set;
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@Service
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@Transactional
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@Slf4j
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public class TaskServiceImpl implements TaskService {
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/**
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* 添加延迟任务
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*
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* @param task
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* @return
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*/
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@Override
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public long addTask(Task task) {
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//1.添加任务到数据库中
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boolean success = addTaskToDb(task);
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if (success) {
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//2.添加任务到redis
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addTaskToCache(task);
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}
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return task.getTaskId();
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}
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@Autowired
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private CacheService cacheService;
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/**
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* 把任务添加到redis中
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*
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* @param task
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*/
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private void addTaskToCache(Task task) {
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String key = task.getTaskType() + "_" + task.getPriority();
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//获取5分钟之后的时间 毫秒值
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Calendar calendar = Calendar.getInstance();
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calendar.add(Calendar.MINUTE, 5);
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long nextScheduleTime = calendar.getTimeInMillis();
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//2.1 如果任务的执行时间小于等于当前时间，存入list
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if (task.getExecuteTime() <= System.currentTimeMillis()) {
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cacheService.lLeftPush(ScheduleConstants.TOPIC + key, JSON.toJSONString(task));
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} else if (task.getExecuteTime() <= nextScheduleTime) {
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//2.2 如果任务的执行时间大于当前时间 && 小于等于预设时间（未来5分钟） 存入zset中
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cacheService.zAdd(ScheduleConstants.FUTURE + key, JSON.toJSONString(task), task.getExecuteTime());
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}
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}
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@Autowired
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private TaskinfoMapper taskinfoMapper;
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@Autowired
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private TaskinfoLogsMapper taskinfoLogsMapper;
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/**
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* 添加任务到数据库中
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*
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* @param task
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* @return
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*/
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private boolean addTaskToDb(Task task) {
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boolean flag = false;
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try {
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//保存任务表
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Taskinfo taskinfo = new Taskinfo();
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BeanUtils.copyProperties(task, taskinfo);
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taskinfo.setExecuteTime(new Date(task.getExecuteTime()));
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taskinfoMapper.insert(taskinfo);
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//设置taskID
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task.setTaskId(taskinfo.getTaskId());
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//保存任务日志数据
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TaskinfoLogs taskinfoLogs = new TaskinfoLogs();
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BeanUtils.copyProperties(taskinfo, taskinfoLogs);
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taskinfoLogs.setVersion(1);
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taskinfoLogs.setStatus(ScheduleConstants.SCHEDULED);
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taskinfoLogsMapper.insert(taskinfoLogs);
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flag = true;
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} catch (Exception e) {
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e.printStackTrace();
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}
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return flag;
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}
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/**
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* 取消任务
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*
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* @param taskId
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* @return
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*/
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@Override
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public boolean cancelTask(long taskId) {
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boolean flag = false;
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//删除任务，更新任务日志
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Task task = updateDb(taskId, ScheduleConstants.CANCELLED);
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//删除redis的数据
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if (task != null) {
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removeTaskFromCache(task);
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flag = true;
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}
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return flag;
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}
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/**
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* 删除redis中的数据
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*
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* @param task
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*/
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private void removeTaskFromCache(Task task) {
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String key = task.getTaskType() + "_" + task.getPriority();
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if (task.getExecuteTime() <= System.currentTimeMillis()) {
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cacheService.lRemove(ScheduleConstants.TOPIC + key, 0, JSON.toJSONString(task));
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} else {
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cacheService.zRemove(ScheduleConstants.FUTURE + key, JSON.toJSONString(task));
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}
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||||
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||||
}
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||||
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||||
/**
|
||||
* 删除任务，更新任务日志
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||||
*
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||||
* @param taskId
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||||
* @param status
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||||
* @return
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||||
*/
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||||
private Task updateDb(long taskId, int status) {
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||||
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Task task = null;
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||||
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||||
try {
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//删除任务
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taskinfoMapper.deleteById(taskId);
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||||
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//更新任务日志
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TaskinfoLogs taskinfoLogs = taskinfoLogsMapper.selectById(taskId);
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taskinfoLogs.setStatus(status);
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taskinfoLogsMapper.updateById(taskinfoLogs);
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task = new Task();
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BeanUtils.copyProperties(taskinfoLogs, task);
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task.setExecuteTime(taskinfoLogs.getExecuteTime().getTime());
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||||
} catch (Exception e) {
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log.error("task cancel exception taskId={}", taskId);
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||||
}
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||||
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||||
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||||
return task;
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||||
}
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||||
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||||
/**
|
||||
* 按照类型和优先级拉取任务
|
||||
*
|
||||
* @param type
|
||||
* @param priority
|
||||
* @return
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||||
*/
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||||
@Override
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||||
@Transactional(rollbackFor = Exception.class)
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||||
public Task poll(int type, int priority) {
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||||
Task task = null;
|
||||
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||||
try {
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||||
String key = type + "_" + priority;
|
||||
|
||||
//从redis中拉取数据 pop
|
||||
String task_json = cacheService.lRightPop(ScheduleConstants.TOPIC + key);
|
||||
if (StringUtils.isNotBlank(task_json)) {
|
||||
task = JSON.parseObject(task_json, Task.class);
|
||||
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||||
//修改数据库信息
|
||||
updateDb(task.getTaskId(), ScheduleConstants.EXECUTED);
|
||||
}
|
||||
} catch (org.springframework.data.redis.RedisConnectionFailureException e) {
|
||||
// Redis连接失败，记录日志并快速返回，避免事务长时间等待
|
||||
log.error("Redis connection failed in poll method, type={}, priority={}: {}",
|
||||
type, priority, e.getMessage());
|
||||
// 直接返回null，避免事务长时间等待导致连接池耗尽
|
||||
return null;
|
||||
} catch (Exception e) {
|
||||
log.error("poll task exception, type={}, priority={}", type, priority, e);
|
||||
// 对于其他异常，也直接返回null，避免事务问题
|
||||
return null;
|
||||
}
|
||||
|
||||
return task;
|
||||
}
|
||||
|
||||
/**
|
||||
* 未来数据定时刷新
|
||||
*/
|
||||
@Scheduled(cron = "0 */1 * * * ?")
|
||||
public void refresh() {
|
||||
|
||||
String token = cacheService.tryLock("FUTRUE_TASK_SYNC", 1000 * 30);
|
||||
|
||||
if(StringUtils.isNotBlank(token)){
|
||||
log.info("未来数据定时刷新---定时任务");
|
||||
|
||||
//获取所有未来数据的集合key
|
||||
Set<String> futureKeys = cacheService.scan(ScheduleConstants.FUTURE + "*");
|
||||
for (String futureKey : futureKeys) {//future_100_50
|
||||
|
||||
//获取当前数据的key topic
|
||||
String topicKey = ScheduleConstants.TOPIC + futureKey.split(ScheduleConstants.FUTURE)[1];
|
||||
|
||||
//按照key和分值查询符合条件的数据
|
||||
Set<String> tasks = cacheService.zRangeByScore(futureKey, 0, System.currentTimeMillis());
|
||||
|
||||
//同步数据
|
||||
if (!tasks.isEmpty()) {
|
||||
cacheService.refreshWithPipeline(futureKey, topicKey, tasks);
|
||||
log.info("成功的将" + futureKey + "刷新到了" + topicKey);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
@@ -0,0 +1,12 @@
|
||||
server:
|
||||
port: ${server.port:51701}
|
||||
spring:
|
||||
application:
|
||||
name: leadnews-schedule
|
||||
cloud:
|
||||
nacos:
|
||||
discovery:
|
||||
server-addr: 192.168.200.130:8848
|
||||
config:
|
||||
server-addr: 192.168.200.130:8848
|
||||
file-extension: yml
|
||||
@@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
|
||||
<mapper namespace="com.heima.schedule.mapper.TaskinfoMapper">
|
||||
|
||||
<select id="queryFutureTime" resultType="com.heima.model.schedule.pojos.Taskinfo">
|
||||
select *
|
||||
from taskinfo
|
||||
where task_type = #{taskType}
|
||||
and priority = #{priority}
|
||||
and execute_time <![CDATA[<]]> #{future,javaType=java.util.Date}
|
||||
</select>
|
||||
|
||||
</mapper>
|
||||
@@ -0,0 +1,56 @@
|
||||
package com.heima.schedule.service.impl;
|
||||
|
||||
import com.heima.model.schedule.dtos.Task;
|
||||
import com.heima.schedule.ScheduleApplication;
|
||||
import com.heima.schedule.service.TaskService;
|
||||
import org.junit.jupiter.api.Test;
|
||||
import org.junit.runner.RunWith;
|
||||
import org.springframework.beans.factory.annotation.Autowired;
|
||||
import org.springframework.boot.test.context.SpringBootTest;
|
||||
import org.springframework.test.context.junit4.SpringRunner;
|
||||
|
||||
import java.util.Date;
|
||||
|
||||
@SpringBootTest(classes = ScheduleApplication.class)
|
||||
@RunWith(SpringRunner.class)
|
||||
class TaskServiceImplTest {
|
||||
|
||||
@Autowired
|
||||
private TaskService taskService;
|
||||
|
||||
/**
|
||||
* 添加任务
|
||||
*/
|
||||
@Test
|
||||
void addTask() {
|
||||
|
||||
Task task = new Task();
|
||||
task.setTaskType(100);
|
||||
task.setPriority(50);
|
||||
task.setParameters("task test".getBytes());
|
||||
task.setExecuteTime(new Date().getTime());
|
||||
|
||||
long taskId = taskService.addTask(task);
|
||||
|
||||
System.out.println(taskId);
|
||||
}
|
||||
|
||||
/**
|
||||
* 取消任务
|
||||
*/
|
||||
@Test
|
||||
public void cancelTask(){
|
||||
taskService.cancelTask(1976546541397213185L);
|
||||
}
|
||||
|
||||
/**
|
||||
* 获取任务
|
||||
* type: 任务类型
|
||||
* priority: 任务优先级
|
||||
*/
|
||||
@Test
|
||||
public void testPoll(){
|
||||
Task poll = taskService.poll(100, 50);
|
||||
System.out.println(poll);
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,117 @@
|
||||
package com.heima.schedule.test;
|
||||
|
||||
import com.alibaba.fastjson.JSON;
|
||||
import com.heima.common.redis.CacheService;
|
||||
import com.heima.model.schedule.dtos.Task;
|
||||
import com.heima.schedule.ScheduleApplication;
|
||||
import com.heima.schedule.service.TaskService;
|
||||
import com.heima.schedule.service.impl.TaskServiceImpl;
|
||||
import edu.umd.cs.findbugs.annotations.Nullable;
|
||||
import org.junit.Test;
|
||||
import org.junit.runner.RunWith;
|
||||
import org.springframework.beans.factory.annotation.Autowired;
|
||||
import org.springframework.boot.test.context.SpringBootTest;
|
||||
import org.springframework.dao.DataAccessException;
|
||||
import org.springframework.data.redis.connection.RedisConnection;
|
||||
import org.springframework.data.redis.core.RedisCallback;
|
||||
import org.springframework.test.context.junit4.SpringRunner;
|
||||
|
||||
import java.util.Date;
|
||||
import java.util.List;
|
||||
import java.util.Set;
|
||||
|
||||
@SpringBootTest(classes = ScheduleApplication.class)
|
||||
@RunWith(SpringRunner.class)
|
||||
public class RedisTest {
|
||||
|
||||
@Autowired
|
||||
private CacheService cacheService;
|
||||
@Autowired
|
||||
private TaskServiceImpl taskServiceImpl;
|
||||
|
||||
@Test
|
||||
public void testList(){
|
||||
// 添加数据
|
||||
cacheService.lLeftPush("list_001","hello,redis");
|
||||
// 查询并删除数据
|
||||
String list001 = cacheService.lRightPop("list_001");
|
||||
System.out.println(list001);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testZset(){
|
||||
// 添加数据到zset中 分值
|
||||
cacheService.zAdd("zset_001","hello,redis 001",1000);
|
||||
cacheService.zAdd("zset_001","hello,redis 002",10000);
|
||||
cacheService.zAdd("zset_001","hello,redis 003",100000);
|
||||
cacheService.zAdd("zset_001","hello,redis 004",1000000);
|
||||
cacheService.zAdd("zset_001","hello,redis 005",10000000);
|
||||
// 按照分值获取数据
|
||||
Set<String> zset001 = cacheService.zRangeByScore("zset_001", 0, 100000);
|
||||
System.out.println(zset001);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testKeys(){
|
||||
Set<String> keys = cacheService.keys("future_*");
|
||||
System.out.println(keys);
|
||||
|
||||
Set<String> scan = cacheService.scan("future_*");
|
||||
System.out.println(scan);
|
||||
}
|
||||
|
||||
//耗时6264
|
||||
@Test
|
||||
public void testPiple1(){
|
||||
long start =System.currentTimeMillis();
|
||||
for (int i = 0; i <10000 ; i++) {
|
||||
Task task = new Task();
|
||||
task.setTaskType(1001);
|
||||
task.setPriority(1);
|
||||
task.setExecuteTime(new Date().getTime());
|
||||
cacheService.lLeftPush("1001_1", JSON.toJSONString(task));
|
||||
}
|
||||
System.out.println("耗时"+(System.currentTimeMillis()- start));
|
||||
}
|
||||
|
||||
|
||||
@Test
|
||||
public void testPiple2(){
|
||||
long start = System.currentTimeMillis();
|
||||
//使用管道技术
|
||||
List<Object> objectList = cacheService.getstringRedisTemplate().executePipelined(new RedisCallback<Object>() {
|
||||
@Nullable
|
||||
@Override
|
||||
public Object doInRedis(RedisConnection redisConnection) throws DataAccessException {
|
||||
for (int i = 0; i <10000 ; i++) {
|
||||
Task task = new Task();
|
||||
task.setTaskType(1001);
|
||||
task.setPriority(1);
|
||||
task.setExecuteTime(new Date().getTime());
|
||||
redisConnection.lPush("1001_1".getBytes(), JSON.toJSONString(task).getBytes());
|
||||
}
|
||||
return null;
|
||||
}
|
||||
});
|
||||
System.out.println("使用管道技术执行10000次自增操作共耗时:"+(System.currentTimeMillis()-start)+"毫秒");
|
||||
}
|
||||
|
||||
@Autowired
|
||||
private TaskService taskService;
|
||||
|
||||
@Test
|
||||
public void addTask() {
|
||||
|
||||
for (int i = 0; i < 5; i++) {
|
||||
Task task = new Task();
|
||||
task.setTaskType(100+i);
|
||||
task.setPriority(50);
|
||||
task.setParameters("task text".getBytes());
|
||||
task.setExecuteTime(new Date().getTime() + 500 * i);
|
||||
|
||||
long taskId = taskService.addTask(task);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
@@ -0,0 +1,12 @@
|
||||
server:
|
||||
port: ${server.port:51701}
|
||||
spring:
|
||||
application:
|
||||
name: leadnews-schedule
|
||||
cloud:
|
||||
nacos:
|
||||
discovery:
|
||||
server-addr: 192.168.200.130:8848
|
||||
config:
|
||||
server-addr: 192.168.200.130:8848
|
||||
file-extension: yml
|
||||
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
@@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
|
||||
<mapper namespace="com.heima.schedule.mapper.TaskinfoMapper">
|
||||
|
||||
<select id="queryFutureTime" resultType="com.heima.model.schedule.pojos.Taskinfo">
|
||||
select *
|
||||
from taskinfo
|
||||
where task_type = #{taskType}
|
||||
and priority = #{priority}
|
||||
and execute_time <![CDATA[<]]> #{future,javaType=java.util.Date}
|
||||
</select>
|
||||
|
||||
</mapper>
|
||||
Reference in New Issue
Block a user