Third, the initial business development

I. Create a database (environment MySQL)

Database Name (abbreviated), Character (UTF-8 Unicode)

Ii. Creating an MVC structure

Create a Java/com.itemname.module (demo) package

Create folder under Package Controller, Model, service child package

III. preparation of the model layer

New Java Class:customer

public class Customer {
Private long CustomerID;
Private String Name;
Private String contact;
Private String telephone;
Private String Email;
Private String Remark;

Getter and Setter
}

Create the appropriate database table and insert the demo data

Third, write the controller layer

List interface: Get:/customer

Query action: Post:/customer_search--

Detail interface: Get:/customer_show?id={id}

New interface: Get:/customer_create

New action: Post:/customer_create

Editing interface: Get:/customer_edit?id={id}

Edit action: Put:/customer_edit?id={id}

Delete action: Delete:/customer_delete?id={id}

Corresponds to 5 servlets

Customerservlet, Customershowservlet, Customercreateservlet, Customereditservlet, Customerdeleteservlet

Create a servlet.

@WebServlet ("/customer_create")
public class Customercreateservlet extends HttpServlet {
/**
* Process Create customer request
*/
protected void DoPost (HttpServletRequest request, httpservletresponse response) throws Servletexception, IOException {
Todo
}

/**
* Enter Create customer interface
*/
protected void doget (HttpServletRequest request, httpservletresponse response) throws Servletexception, IOException {
Todo
}
}

Iv. preparation of the service layer

public class CustomerService {
/**
* Get Customer List
*/
Public list<customer> getcustomerlist (String keyword) {
Todo
return null;
}
/**
* Get Customer
*/
Public Customer GetCustomer (long id) {
Todo
return null;
}
/**
* Create Customer
*/
public boolean CreateCustomer (map<string,object> fieldMap) {
Todo
return false;
}
/**
* Update Customer
*/
public Boolean UpdateCustomer (long ID, map<string,object> fieldMap) {
Todo
return false;
}
/**
* Delete Customer
*/
public Boolean deletecustomer (long id) {
Todo
return false;
}
}

Third, the initial business development