【发布时间】:2018-07-10 02:29:57
【问题描述】:
我刚开始学习 Spring Batch,之前没有 Spring Batch 的经验。
我从 start.spring.io 下载了一个模板并选择了以下
在此之后,我将项目导入 IntelliJ IDE 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();
}
}
这就是我的入门类的样子
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);
}
}
我没有触及或修改任何类\配置。但是当我运行该应用程序时,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).
我可以做些什么来修复这个错误?
【问题讨论】:
-
嗯,你想要什么样的数据库?嵌入式还是外部?你查过谷歌吗?我尝试了“支持的 spring-batch 嵌入式数据库”,我得到了this。其中列出了支持 HSQL、H2 和 Derby。
标签: java spring spring-boot intellij-idea spring-batch