1、XyzMapper.xml
…
或
…
2、XyzMapper.java
public int doSomething(Map<String, Object> parameters);
or
public int doSomething(YourClass c);
3、要在map或c中有一个字段名为yourId,Mybatis会自动把主键值赋给这个字段。
Map<String, Object> parameters = new HashMap<String, Object>();
parameters.put(“yourId”, 1234);
…
mapper.doSomething(parameters);
System.out.println(“id of the field that is primary key” + parameters.get(“yourId"));
或
YourClass c = new YourClass();
…
mapper.doSomething(c);
System.out.println(“id of the field that is primary key” + c.yourId);
,读书须用意,一字值千金。