Java manipulates MongoDB_2 (applies scene settings)
Apply scene settin
Take the student information management system as an example to demonstrate the addition, deletion, modification and query of student information. Here, the student's Bean class is defined as:
Student.java
Public class Student {
Private String studentId
Private String name
Private int weight
Private int height
Private Date birthday
Public String getStudentId () {
Return studentId
}
Public void setStudentId (String studentId) {
This.studentId = studentId
}
Public String getName () {
Return name
}
Public void setName (String name) {
This.name = name
}
Public int getWeight () {
Return weight
}
Public void setWeight (int weight) {
This.weight = weight
}
Public int getHeight () {
Return height
}
Public void setHeight (int height) {
This.height = height
}
Public Date getBirthday () {
Return birthday
}
Public void setBirthday (Date birthday) {
This.birthday = birthday
}
@ Override
Public String toString () {
Return "Student [studentId=" + studentId + ", name=" + name
+ ", weight=" + weight + ", height=" + height + ", birthday="
+ birthday + "]"
}
Public Student (String studentId, String name, int weight, int height
Date birthday) {
Super ()
This.studentId = studentId
This.name = name
This.weight = weight
This.height = height
This.birthday = birthday
}
Public Student () {
}
}
The API for adding, deleting, modifying and querying students is defined as follows:
IStudentDao.java
Public interface IStudentDao {
Void insert (Student s)
Void update (Student s)
Void delete (String studentId)
}
The API implementation file for manipulating MongoDB is as follows
IStudentDaoImpl.java
Public class IStudentDaoImpl implements IStudentDao {
@ Override
Public void insert (Student s) {
/ / not implemented yet
}
@ Override
Public void update (Student s) {
/ / not implemented yet
}
@ Override
Public void delete (String studentId) {
/ / not implemented yet
}
}
