mybatis3.2以上版本都会出现:
返回map value为空字段不显示(mybatis默认:call-setters-on-nulls=false)
五种方法:
1.在application.yml添加:
mybatis:
configuration:
call-setters-on-nulls: true
2.在application.properties添加:
#当查询数据为空时字段返回为null,不加这个查询数据为空时,字段将被隐***ybatis.configuration.call-setters-on-nulls=true
3.在mybatis.xml添加:
<configuration>
<settings>
<setting name="callSettersOnNulls" value="true" />
</settings>
</configuration>
4.在sql里面设置(空值赋空):
IFNULL(test, '') AS test
5.在数据源配置文件中,添加默认配置,如下所示:
//设置默认属性
org.apache.ibatis.session.Configuration configuration = new org.apache.ibatis.session.Configuration();
configuration.setCallSettersOnNulls(true);
sf.setConfiguration(configuration);