springboot snippet

问题随记

1. Spring Boot通过Mybatis，使用mapper接口和xml配置sql，连接数据库

• 首先在配置文件application.properties

  spring.datasource.url=jdbc:mysql://localhost:3306/test
  spring.datasource.username=***
  spring.datasource.password=***
  spring.datasource.driverClassName=com.mysql.jdbc.Driver
  
  #mybatis.typeAliasesPackage：为实体对象所在的包，跟数据库表一一对应
  #mybatis.mapperLocations：mapper文件的位置
  
  mybatis.typeAliasesPackage=com.xxx.model
  mybatis.mapperLocations=classpath:mybatis/mapper/*Mapper.xml

• 在启动类Application.java中写上配置信息

  @SpringBootApplication
  @MapperScan("com.xxx.dao") // mybatis扫描路径，针对的是接口Mapper类
  public class DailyreportApplication{
  
      public static void main(String[] args) {
          SpringApplication.run(DailyreportApplication.class, args);
      }
  }

2. mysql连接异常java.sql.SQLException: Value '0000-00-00' can not be represented as java.sql.Date

• 解决办法jdbc:mysql://yourserver:3306/yourdatabase?zeroDateTimeBehavior=convertToNull