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，

来源： javaer 分享于 2024-04-11 点击 11264 次点评：123

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，

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"?>
<!--
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  ~ 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3672js教程。

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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，