容器启动后执行和执行数据库脚本

Posted 2020-08-25 yweihainan

 1 package com.jt.mongo.demo.modules.init;
 2 
 3 import org.slf4j.Logger;
 4 import org.slf4j.LoggerFactory;
 5 import org.springframework.context.ApplicationListener;
 6 import org.springframework.context.event.ContextRefreshedEvent;
 7 import org.springframework.core.io.ClassPathResource;
 8 import org.springframework.jdbc.datasource.init.ResourceDatabasePopulator;
 9 import org.springframework.stereotype.Component;
10 
11 import javax.annotation.Resource;
12 import javax.sql.DataSource;
13 import java.sql.SQLException;
14 
15 @Component
16 public class SqlScriptInitExecutor implements ApplicationListener<ContextRefreshedEvent> {
17 
18     private static final Logger LOGGER = LoggerFactory.getLogger(SqlScriptInitExecutor.class);
19 
20     @Resource
21     private DataSource mysqlDataSource;
22 
23     @Override
24     public void onApplicationEvent(ContextRefreshedEvent event) {
25         initMySqlTables();
26     }
27     
28     private void initMySqlTables() {
29         try {
30 
31             ResourceDatabasePopulator populator = new ResourceDatabasePopulator();
32             populator.addScript(new ClassPathResource("sql/mysql_pdca_manager.sql"));
33             populator.populate(mysqlDataSource.getConnection());
34 
35             LOGGER.info("init pdca manager tables success.");
36 
37         } catch (SQLException e) {
38             LOGGER.error("init pdca manager tables error", e);
39         }
40     }
41 }

 

ContextRefreshedEvent：

Event raised when an {@code ApplicationContext} gets initialized or refreshed.
当容器初始化或者重启之后实例化到容器中，然后监听他的listener就会执行