第一种方案:默认数组角标: service Public User selectUser(String name,String area); mapper: <select id="selectUser" resultMap="BaseResultMap"> select * from user_user_t where user_name = #{0} and user_area=#{1} </select> 第二种方案
第一种方案 : DAO层的函数方法 Public User selectUser(String name,String area); 对应的Mapper.xml <select id="selectUser" resultMap="BaseResultMap" parameterType="java.lang.String"> select * from user_user_t where user_name = #{0} and u
第一种方案 : DAO层的函数方法 Public User selectUser(String name,String area); 对应的Mapper.xml <select id="selectUser" resultMap="BaseResultMap" parameterType="java.lang.String"> select * from user_user_t where user_name = #{0} and u
第一种 Public User selectUser(String name,String area); 对应的Mapper.xml <select id="selectUser" resultMap="BaseResultMap"> select * from user_user_t where user_name = #{0} and user_area=#{1} </select> 其中,#{0}代表接收的是dao层中的第一个参数,#{
spring boot mapper层传参数是用main的arg0(第一个参数),arg1(第二个参数) 大于三个参数,用map传递 public interface FrontMapper{ //============== //spring boot mapper 传参@Select("select count(1) as num from users where username=#{arg0} and password=#{arg1}")int isUserExist(Stri