Spring Batch:无法确定嵌入式数据库驱动程序类,数据库类型为NONE。

3

我刚开始学习Spring Batch,之前没有任何关于Spring Batch 的经验。

我从start.spring.io下载了一个模板,并选择了以下配置:

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之后,我在IntelliJ IDE中导入了该项目,并进行了以下更改:

添加了作业配置类:

package io.spring.helloworld.configuration;

import org.springframework.batch.core.Job;
import org.springframework.batch.core.Step;
import org.springframework.batch.core.StepContribution;
import org.springframework.batch.core.configuration.annotation.EnableBatchProcessing;
import org.springframework.batch.core.configuration.annotation.JobBuilderFactory;
import org.springframework.batch.core.configuration.annotation.StepBuilderFactory;
import org.springframework.batch.core.scope.context.ChunkContext;
import org.springframework.batch.core.step.tasklet.Tasklet;
import org.springframework.batch.repeat.RepeatStatus;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration  //For spring configuration
@EnableBatchProcessing  //bootstrap all the infra needed to run spring batch
public class jobConfiguration {

    @Autowired
    private JobBuilderFactory jobBuilderFactory;


    @Autowired
    private StepBuilderFactory stepBuilderFactory;

    @Bean
    public Step step1() {
        return stepBuilderFactory.get("step1")
                .tasklet(new Tasklet() {
                    @Override
                    public RepeatStatus execute(StepContribution stepContribution, ChunkContext chunkContext) throws Exception {
                        System.out.println("Hello World");
                        return RepeatStatus.FINISHED;
                    }
                }).build();
    }

    @Bean
    public Job HelloWorld() {
        return jobBuilderFactory.get("HelloWorldJob")
                .start(step1())
                .build();


    }

}

以下是我的入口类的样子:
package io.spring.helloworld;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;

@SpringBootApplication

public class HelloWorldApplication {

    public static void main(String[] args) {
        SpringApplication.run(HelloWorldApplication.class, args);

        System.exit(0);
    }
}

我没有触碰或修改任何类\配置。但是当我运行应用程序时,我收到以下消息:

Description:

Cannot determine embedded database driver class for database type NONE

Action:

If you want an embedded database please put a supported one on the classpath. If you have database settings to be loaded from a particular profile you may need to active it (no profiles are currently active).

我该怎么做才能修复这个错误?

你想要哪种类型的数据库?嵌入式还是外部的?你查过谷歌了吗?我试着搜索“支持的 spring-batch 嵌入式数据库”,得到了这个链接:https://docs.spring.io/spring/docs/3.0.0.M4/reference/html/ch12s08.html。其中列出了 HSQL、H2 和 Derby 作为被支持的数据库列表。 - Elliott Frisch
1个回答

1
为了解决这个错误,有两种方法:
方法一:
尝试添加以下注释:
@EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class})

例子:

@SpringBootApplication
@EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class})
public class HelloWorldApplication {
-----
}

方法2: 您可以在application.properties文件中添加以下行。
spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration

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