下面是我的2类应用程序和配置
package com.spring;
import org.springframework.batch.core.Job;
import org.springframework.context.annotation.Bean;
public class Configuration {
@Bean
Job testRun() {
return null;
}
}package com.spring;
import org.springframework.batch.core.Job;
import org.springframework.batch.core.launch.JobLauncher;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class App implements CommandLineRunner {
@Autowired
JobLauncher jobLauncher;
@Autowired
Job testRun;
public static void main(String[] args) {
SpringApplication.run(App.class, args);
}
@Override
public void run(String... args) throws Exception {
// TODO Auto-generated method stub
System.out.println("RUNNING ...");
jobLauncher.run(testRun, null);
}
}然而，当我尝试执行这个命令时，我得到了错误：
***************************
APPLICATION FAILED TO START
***************************
Description:
Field jobLauncher in com.spark.spring.App required a bean of type org.springframework.batch.core.launch.JobLauncher that could not be found.
The injection point has the following annotations:
- @org.springframework.beans.factory.annotation.Autowired(required=true)
Action:
Consider defining a bean of type org.springframework.batch.core.launch.JobLauncher in your configuration.我在这里错过了什么吗？我相信我已经定义了JobLauncher和Job bean。还有，为什么我需要为Job Launcher定义一个bean？
2条答案
按热度按时间aelbi1ox1#
您需要将
Configuration类作为Spring配置类，这意味着使用@Configuration注解它，如下所示：此外，根据您报告的错误，您需要在该配置类（或其他地方）中定义
JobLauncher类型的bean，或者添加@EnableBatchProcessing注解，它将自动为您创建它：raogr8fs2#
检查pom.xml中的spring-boot-starter-parent版本。尝试将其设置为2.7.9版本或更早版本。