Tbed/src/main/java/cn/hellohao/TbedApplication.java

package cn.hellohao;

import cn.hellohao.dao.KeysMapper;
import cn.hellohao.utils.FirstRun;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.jdbc.DatabaseDriver;
import org.springframework.boot.web.servlet.MultipartConfigFactory;
import org.springframework.boot.web.servlet.ServletComponentScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.support.DatabaseStartupValidator;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.util.unit.DataSize;

import javax.servlet.MultipartConfigElement;
import javax.sql.DataSource;
import java.util.stream.Stream;

@SpringBootApplication
@Configuration
@EnableScheduling
@ServletComponentScan
@EnableTransactionManagement(proxyTargetClass = true)
public class TbedApplication {

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

    //延缓Spring Boot启动时间直到数据库启动的方法
    @Bean
    public DatabaseStartupValidator databaseStartupValidator(DataSource dataSource) {
        DatabaseStartupValidator databaseStartupValidator = new DatabaseStartupValidator();
        databaseStartupValidator.setDataSource(dataSource);
        databaseStartupValidator.setValidationQuery(DatabaseDriver.POSTGRESQL.getValidationQuery());
        return databaseStartupValidator;
    }
    @Bean
    public static BeanFactoryPostProcessor dependsOnPostProcessor() {
        return bf -> {
            // Let beans that need the database depend on the DatabaseStartupValidator
            // like the JPA EntityManagerFactory or Flyway
            String[] flyway = bf.getBeanNamesForType(FirstRun.class);
            Stream.of(flyway)
                    .map(bf::getBeanDefinition)
                    .forEach(it -> it.setDependsOn("databaseStartupValidator"));

            String[] jpa = bf.getBeanNamesForType(KeysMapper.class);
            Stream.of(jpa)
                    .map(bf::getBeanDefinition)
                    .forEach(it -> it.setDependsOn("databaseStartupValidator"));
        };
    }
    /**
     * 文件上传配置
     * @return
     */
    @Bean
    public MultipartConfigElement multipartConfigElement() {
        MultipartConfigFactory factory = new MultipartConfigFactory();
        //  单个数据大小
        factory.setMaxFileSize(DataSize.parse("102400KB")); // KB,MB
        /// 总上传数据大小
        return factory.createMultipartConfig();
    }

}