解决elastic-job-ui在使用druid作为数据库连接池时作业维度报错问题
作者:快乐敲代码
这篇文章主要介绍了解决elastic-job-ui在使用druid作为数据库连接池时作业维度报错问题,具有很好的参考价值,希望对大家有所帮助,如有错误或未考虑完全的地方,望不吝赐教
问题说明
我们项目中使用到了elastic-job,然后自己封装了个sdk,
方便使用,里面的数据源配置是常用的druid+mysql的组合,在操作中,发现elastic-job-ui可视化控制台会报错无法使用。
深究其原因是因为,各个服务把定时任务注册到了zk中,包括数据库配置类的一些信息,
但是elastic-job-ui源码中没有引入对应的pom依赖,
导致他在去zk获取了定时任务的配置类信息后,需要想这些信息转换成对应的类对象操作时,没法成功转换。
解决
处理也很简单,
一种是项目中包装的sdk不使用druid连接池即可,可以使用HikariCP,实测是没问题
另一种更简单,下载elastic-job-ui源码,在pom依赖中引入druid依赖接口(我们用这个,省的改项目代码,引用的地方太多了)
实操
下载源码,使用的示最新的3.0.2版本
https://github.com/apache/shardingsphere-elasticjob-ui/tree/3.0.2
1、引入依赖和配置
引入druid依赖,顺便mysql的也引入和配置下application,省的我们手动配置mysql依赖文件了
另外他这个build也调整下,不然你直接对他打包才几兆,不完整
<?xml version="1.0" encoding="UTF-8"?> <!-- ~ Licensed to the Apache Software Foundation (ASF) under one or more ~ contributor license agreements. See the NOTICE file distributed with ~ this work for additional information regarding copyright ownership. ~ The ASF licenses this file to You under the Apache License, Version 2.0 ~ (the "License"); you may not use this file except in compliance with ~ the License. You may obtain a copy of the License at ~ ~ http://www.apache.org/licenses/LICENSE-2.0 ~ ~ Unless required by applicable law or agreed to in writing, software ~ distributed under the License is distributed on an "AS IS" BASIS, ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. ~ See the License for the specific language governing permissions and ~ limitations under the License. --> <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.apache.shardingsphere</groupId> <artifactId>shardingsphere-elasticjob-lite-ui</artifactId> <version>3.0.2</version> </parent> <artifactId>shardingsphere-elasticjob-lite-ui-backend</artifactId> <name>${project.artifactId}</name> <dependencies> <dependency> <groupId>org.apache.shardingsphere.elasticjob</groupId> <artifactId>elasticjob-lite-lifecycle</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> </dependency> <dependency> <groupId>org.apache.openjpa</groupId> <artifactId>openjpa</artifactId> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-dbcp2</artifactId> </dependency> <dependency> <groupId>com.h2database</groupId> <artifactId>h2</artifactId> </dependency> <dependency> <groupId>org.postgresql</groupId> <artifactId>postgresql</artifactId> </dependency> <dependency> <groupId>javax.activation</groupId> <artifactId>javax.activation-api</artifactId> </dependency> <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.13</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.22</version> </dependency> <dependency> <groupId>javax.xml.bind</groupId> <artifactId>jaxb-api</artifactId> </dependency> <dependency> <groupId>com.sun.xml.bind</groupId> <artifactId>jaxb-core</artifactId> </dependency> <dependency> <groupId>com.sun.xml.bind</groupId> <artifactId>jaxb-impl</artifactId> </dependency> <dependency> <groupId>com.auth0</groupId> <artifactId>java-jwt</artifactId> </dependency> </dependencies> <build> <finalName>shardingsphere-elasticjob-lite-ui</finalName> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-resources-plugin</artifactId> <configuration> <encoding>${project.build.sourceEncoding}</encoding> <outputDirectory>${project.build.outputDirectory}</outputDirectory> <resources> <resource> <targetPath>${project.build.directory}/classes/public</targetPath> <directory>${project.parent.basedir}/shardingsphere-elasticjob-lite-ui-frontend/dist</directory> </resource> <resource> <targetPath>${project.build.directory}/classes</targetPath> <directory>src/main/resources</directory> </resource> </resources> </configuration> </plugin> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <version>${spring-boot.version}</version> </plugin> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <executions> <execution> <goals> <goal>repackage</goal> </goals> </execution> </executions> </plugin> </plugins> </build>
application.properties文件直接加入mysql配置选择
## Uncomment the following property to allow adding DataSource dynamically. dynamic.datasource.allowed-driver-classes={'org.h2.Driver','org.postgresql.Driver','com.mysql.cj.jdbc.Driver'}
2、打包
直接用这个打好的jar包,直接运行即可,jar里面打包包含了前端页面
3、访问
java -jar运行完这个jar包后,直接访问 http://127.0.0.1:8088/#/ 即可看到可视化控制台
账号密码都是默认的root
总结
以上为个人经验,希望能给大家一个参考,也希望大家多多支持脚本之家。