java - Spring Boot不加载application.properties

Question

我正在尝试将 spring boot application.properties 加载到 java 配置类中。但是当我尝试使用这些值时，它返回为空。我已按照在线教程进行了所有操作，但不确定为什么它不起作用。请在这方面指导我。

应用程序组件扫描 XML 文件

<context:component-scan base-package="com.saimuga.abp"></context:component-scan>

应用程序入口点 - 命令行运行程序

@SpringBootApplication
public class FileUploadApplication implements CommandLineRunner{

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

   //access command line arguments




@Override
public void run(String... args) throws Exception {

    System.out.println("args");
    System.out.println(args[0]);


    ApplicationContext ctx = new ClassPathXmlApplicationContext(
            "ABPBatchInfrastructure.xml",
            "FileUploadApp.xml"
    );

    JobLauncher jobLauncher = ctx.getBean(JobLauncher.class);
    Job job = ctx.getBean(Job.class);       

    /*
     * jobLauncher.run(job, new JobParametersBuilder().addString("inputResource",
     * "file:./products.zip") .addString("targetDirectory",
     * "./importproductsbatch/").addString("targetFile", "products.txt")
     * .addString("date", "2020-06-02").toJobParameters());
     */

    jobLauncher.run(job,
            new JobParametersBuilder().addString("inputResource", "file:./products.zip")
                    .addString("targetDirectory", "./importproductsbatch/").addString("targetFile", "products.txt")
                    .addString("date", "2034-09-30").toJobParameters());



}

}

环境配置类

@ConfigurationProperties(prefix = "notification")
@Configuration("envProperties")
public class NotifyYaml {

private String test;

public NotifyYaml() {

}


/**
 * @return the test
 */
public String getTest() {
    return test;
}

/**
 * @param test the test to set
 */
public void setTest(String test) {
    this.test = test;
}


}

这就是我所说的环境值(value)观

public class ProductJdbcItemWriter implements ItemWriter<Product> {

private static final String INSERT_PRODUCT = "insert into product (id,name,description,price) 
values(?,?,?,?)";

private static final String UPDATE_PRODUCT = "update product set name=?, description=?, price=? where 
id = ?";

private JdbcTemplate jdbcTemplate;

@Autowired
private NotifyYaml envProperties;

public ProductJdbcItemWriter(DataSource dataSource) {
    System.out.println("cxf");
    this.jdbcTemplate = new JdbcTemplate(dataSource);
}

/* (non-Javadoc)
 * @see org.springframework.batch.item.ItemWriter#write(java.util.List)
 */
    public void write(List<? extends Product> items) throws Exception {
    System.out.println("cxf ProductJdbcItemWriter starts ");
    System.out.println(envProperties.getTest());
    for(Product item : items) {
        int updated = jdbcTemplate.update(UPDATE_PRODUCT,
            item.getName(),item.getDescription(),item.getPrice(),item.getId()
        );
        if(updated == 0) {
            jdbcTemplate.update(
                INSERT_PRODUCT,
                item.getId(),item.getName(),item.getDescription(),item.getPrice()
            );  
        }                               
        System.out.println("cxf ProductJdbcItemWriter ends ");
    }
    }

    }

在下面添加了属性文件

notification.test=test
spring.main.allow-bean-definition-overriding=true
spring.batch.job.enabled=false
spring.datasource.username=postgres
spring.jmx.enabled=false
spring.jmx.default-domain=abpservice
endpoints.jmx.domain=abpservice
endpoints.jmx.domain.unique-names=true
spring.application.admin.enabled=true

spring.application.admin.jmx-name=org.springframework.boot:type=Admin,name=SpringApplication

Answer 1

您自己创建 ClassPathXmlApplicationContext，获取 Job 和 JobLauncher beans，创建作业参数并运行作业。这首先不是 Spring Boot 的方式。如果您正确配置应用程序，Spring Boot 会为您完成所有这些工作。您需要导入 xml 配置文件:

@SpringBootApplication
@ImportResource({"classpath:ABPBatchInfrastructure.xml", "classpath:FileUploadApp.xml"})
public class FileUploadApplication {

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

并在启动时传递作业参数:

java -jar myjob.jar inputResource=products.zip // add other parameters