创建基础接口
public interface BaseMapper<T> {
List<T> query(T t);
}创建继承的子接口
public interface AbcMapper extends BaseMapper<Abc> {
Abc queryList(Abc abc);
}创建一个getter,setter类
public class Abc {
private String val;
public String getVal() {
return val;
}
public void setVal(String val) {
this.val = val;
}
}运行 getGenericInterfaces 数据的信息输出:
public static void main(String[] args) {
Class<?> clazz = AbcMapper.class;
Type[] types = clazz.getGenericInterfaces();
for (Type type : types) {
if (type instanceof ParameterizedType) {
ParameterizedType t = (ParameterizedType)type;
System.out.println("t: " + t.getTypeName());
Class<?> returnType = (Class)t.getActualTypeArguments()[0];
System.out.println("r: " + returnType.getName());
}
}
}程序运行输出 ：
t: com.test.source.dao.BaseMapper
r: com.test.source.model.Abc
创建 SecondMapper接口；
public interface SecondMapper<T> {
int insert(T t);
}调整AbcMapper;
public interface AbcMapper extends BaseMapper<Abc>, SecondMapper<Abc> {
Abc queryList(Abc abc);
}结果有四个输出;
t: com.test.source.dao.BaseMapper
r: com.test.source.model.Abc
t: com.test.source.dao.SecondMapper
r: com.test.source.model.Abc