If the interface parameter is passed an object
If the parameter is a plurality of general interfaces pass parameters, not the target
Way: In the sql statement takes a value to the parameter by the index position of the interface method parameter
Second way: By custom interface method parameter name in a value to obtain the name of the custom parameter sql statement
Three ways: DAO interface method only receive a map type of parameters, all encapsulated into the data map is then transmitted to the sql statement, sql statement by map the acquired key data
Four ways: passing parameters dao interfaces with a plurality of both types of objects, there are basic types of universal manner []
Return value of the primary key of the new data after it is inserted into a data
mysql median then execute the following statement is executed after the insert statement, the primary key may be acquired insert data of
Inserting data Mybatis implemented and acquiring primary key value
Test acquired primary key value returned
Set the primary key value Mybatis executed after the new data to a property of the object, it is necessary to obtain the value of the primary key returned by calling the object attributes.