mybatisPlus使用LocalDateTime转化异常
1.问题的出现
mybatisPlus版本3.2.0 3.0以上默认时间为LocalDateTime ,在使用sql查询的时候会出现
druid版本
<dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.9</version> </dependency>
@ApiModelProperty(value = "添加时间") private LocalDateTime createTime; /** * 更新时间 */ @ApiModelProperty(value = "更新时间") private LocalDateTime updateTime;
查询最后报错
org.springframework.dao.InvalidDataAccessApiUsageException: Error attempting to get column create_time from result set. Cause: java.sql.SQLFeatureNotSupportedException ; null; nested exception is java.sql.SQLFeatureNotSupportedException
2.解决
解决方式一:
在映射的result里面或者resultMap里面配置
@Result(column="create_time", property="createTime",javaType = LocalDateTime.class,jdbcType = JdbcType.DATE), @Result(column="update_time", property="updateTime",javaType = LocalDateTime.class,jdbcType = JdbcType.DATE),
失败
解决办法二:
@Result(column="create_time", property="createTime",javaType = LocalDateTime.class, jdbcType = JdbcType.DATE,typeHandler = MyLocalDateTimeTypeHandler.class), @Result(column="update_time", property="updateTime",javaType = LocalDateTime.class, jdbcType = JdbcType.DATE,typeHandler = MyLocalDateTimeTypeHandler.class),
这里的MyLocalDateTimeTypeHandler是自己的转换类,继承的是mybatis的转换类
public class MyLocalDateTimeTypeHandler extends LocalDateTimeTypeHandler { @Override public LocalDateTime getResult(ResultSet rs, String columnName) throws SQLException { Object object = rs.getObject(columnName); System.out.println(object); if(object instanceof java.sql.Timestamp){ //在这里强行转换,将sql的时间转换为LocalDateTime return LocalDateTime//可以根据自己的需要进行转化 .ofInstant(((Timestamp)object).toInstant(), ZoneOffset.ofHours(0)); } return super.getResult(rs, columnName); } }
解决办法可行
解决办法3:
在网上搜索的半天,发现是druid的问题,于是把源码拉下来了,自己打包
<dependency>//自己打包的版本 <groupId>com.git</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.20</version> </dependency> <dependency> <groupId>com.git</groupId> <artifactId>druid</artifactId> <version>1.1.20</version> </dependency>
刚准备改进一下,进行rq发现问题已经解决, 于是将版本切换到1.1.20,发现卧槽,还真的有,问题解决