l Create a TestProductManagerDaoJDBC class to make unit tests on DAO
Package tests;
Import java.util.list;
Import junit.framework.testcase;
Import org.springframework.jdbc.datasource.drivermanagerDataSource;
Import db.productmanagerdaojdbc;
Import bus.product;
Public class testproductmanagerdaojdbc extends testcase {
Private productmanagerdaojdbc pmda;
Public void setup () {
PMDAO = New ProductManagerDaoJDBC ();
DrivermanagerDataSource DS = New DriverManagerDataSource ();
DS.SetDriverClassName ("com.mysql.jdbc.driver);
DS.SETURL ("JDBC: MySQL: // LocalHost / Test");
DS.SETUSERNAME ("Test");
DS.SETPASSWORD ("Test");
PMDAO.SETDATASOURCE (DS);
}
Public void testgetProductList () {
List l = pmdao.getProductList ();
Product P1 = (Product) L.GET (0);
Assertequals ("lamp", p1.getdescription ());
Product P2 = (Product) L.GET (1);
Assertequals ("Table", P2.GetDescription ());
}
Public void testincreaseprice () {
List l1 = pmdao.getProductList ();
Product p1 = (product) l1.get (0);
Assertequals (New Double ("5.78"), p1.getprice ());
PMDAO.IncReaseprice (P1, 10);
List l2 = pmdao.getProductList ();
Product P2 = (Product) l2.get (0);
Assertequals (New Double ("6.36"), P2.GetPrice ());
}
}
l Create DataSource in the setup () method for testing
(25) Modify web applications to use databases
l We only need to modify the business class ProductManager to use the database, and no need to modify the code of the view and controller part.
Package bus;
Import java.io.serializable;
Import java.util.listiterator;
Import java.util.list;
Import db.productmanagerdao;
Public Class ProductManager IMPLEments Serializable {
Private ProductManagerdao PMD;
PRIVATE LIST PRODUCTS;
Public void setProductManagerDao (ProductManagerDao PMD) {
THIS.PMD = PMD;
}
/ *
Public void setProducts (List P) {
Products = P;
}
* /
Public List getProducts () {
Products = pmd.getProductList ();
Return Products;
}
Public void increaseprice (int PCT) {
Listiterator Li = Products.ListItIn ();
While (li.hasnext ()) {
Product p = (product) li.next ();
/ *
Double newprice = p.getPrice (). doubleValue () * (100 PCT) / 100;
P.SETPRICE (New Double (NewPrice));
* /
PMD.IncReaseprice (P, PCT);
}
}
}
l Here you need a reference for a productManagerDao interface and its setter method, which sets in the bean configuration
L This, in the ProductManager class, use the DAO method to implement the database lasting
