第一种、springMVC和boot通用配置:(Mybatis.xml)
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD SQL MAP Config 3.1//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <settings> <setting name="callSettersOnNulls" value="true"/> </settings> </configuration>
第二种、boot专用配置:
在application.properties中添加: mybatis.configuration.call-setters-on-nulls=true
第三种、每个sql返回字段做判断(通用boot、mvc、比较麻烦):
IFNULL(name,'') as name