解決elastic-job-ui在使用druid作為數(shù)據(jù)庫連接池時作業(yè)維度報錯問題

更新時間：2024年04月01日 15:21:01 作者：快樂敲代碼

這篇文章主要介紹了解決elastic-job-ui在使用druid作為數(shù)據(jù)庫連接池時作業(yè)維度報錯問題,具有很好的參考價值,希望對大家有所幫助,如有錯誤或未考慮完全的地方,望不吝賜教

問題說明

我們項目中使用到了elastic-job，然后自己封裝了個sdk，

方便使用，里面的數(shù)據(jù)源配置是常用的druid+mysql的組合，在操作中，發(fā)現(xiàn)elastic-job-ui可視化控制臺會報錯無法使用。

深究其原因是因為，各個服務(wù)把定時任務(wù)注冊到了zk中，包括數(shù)據(jù)庫配置類的一些信息，

但是elastic-job-ui源碼中沒有引入對應(yīng)的pom依賴，

導(dǎo)致他在去zk獲取了定時任務(wù)的配置類信息后，需要想這些信息轉(zhuǎn)換成對應(yīng)的類對象操作時，沒法成功轉(zhuǎn)換。

解決

處理也很簡單，

一種是項目中包裝的sdk不使用druid連接池即可，可以使用HikariCP，實測是沒問題

另一種更簡單，下載elastic-job-ui源碼，在pom依賴中引入druid依賴接口（我們用這個，省的改項目代碼，引用的地方太多了）

實操

下載源碼，使用的示最新的3.0.2版本

https://github.com/apache/shardingsphere-elasticjob-ui/tree/3.0.2

1、引入依賴和配置

引入druid依賴，順便mysql的也引入和配置下application，省的我們手動配置mysql依賴文件了

另外他這個build也調(diào)整下，不然你直接對他打包才幾兆，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配置選擇

## 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'}