Lab6-JdbcTemplate Trinh Bay[1]

8/10/2019 Lab6-JdbcTemplate Trinh Bay[1]

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LAB6: TRNH BY VI JdbcTemplate

Nguyn Nghim [email protected] Trang 1

MC TIUKt thc bi thc hnh ny, bn c khnng

To menu ng Trnh by hng ha dng ct vi CSS

M T

Hot ng:

Chy products.htm hin thtrang web gm menu loi hng ha (c tCSDL) v tt chng ha

Nhp [mt loi hng ha] shin thcc hng ha thuc loi c chn

THC HINTrong bi ny, bn sphi to mt project c tchc nh sau:


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Bc 1: Th vin v cu hnh project

Bc 2: CSDL

Bc 4: To lp DAO v Entity

Bc 5: To giao din

Bc 6: To Controller

Bc 7: Chy


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Bc 1: Th vin v cu hnh project

Th vin

Bn cnh cc th vin ca Th vin cn thit cho ng dng

SQLServerDriver

o sqljdbc4.jar

JdbcTemplate

o commons-dbcp.jar

o spring-jdbc-3.2.1.RELEASE.jar

o

spring-tx-3.2.1.RELEASE.jar

Cu hnh Web.xml

SpringMVCEmail

index.jsp

dispatcher

org.springframework.web.servlet.DispatcherServlet

contextConfigLocation/WEB-INF/spring-config-*.xml

1


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dispatcher*.htm

Cu hnh Spring MVC np nhiu file cu hnh: spring-config-*.xml. Du * si din cho nhm k tbt

k. Cthbi ny l mvc, gmail v upload

spring-config-mvc.xml

Khai bo bean InternalResourceViewResolver xl view

Chr package tm kim cc component l com.lycato

Chr ng dng Spring ny c php sdng annotation

spring-config-jdbc.xml


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http://www.springframework.org/schema/mvchttp://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">

Trong file cu hnh ny bn phi khai bo 2 bean.

BasicDataSource: bean ny cu hnh cc thng skt ni CSDL

JdbcTemplate: bean ny c khai bo n lm vic vi CSDL c tim vo v sdng sau nytrong ng dng

Bc 2: CSDL

Hnh: CSDL Seminar cha 2 bng Products v Categories

Bc 4: To lp m tv truy xut dliu

Lp m tdliu (Entity)

Category.java

packagecom.lycato.entity;

publicclassCategory {Integer id;String name, namevn;

publicInteger getId() {returnid;

}


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publicvoidsetId(Integer id) {this.id= id;

}publicString getName() {

returnname;}publicvoidsetName(String name) {

this.name= name;}publicString getNamevn() {

returnnamevn;}publicvoidsetNamevn(String namevn) {

this.namevn= namevn;}

}

Product.java

packagecom.lycato.entity;

publicclassProduct {

Integer id, quantity, categoryId;String name, image;Double unitPrice;

publicInteger getId() {returnid;

}publicvoidsetId(Integer id) {

this.id= id;}publicInteger getQuantity() {

returnquantity;}publicvoidsetQuantity(Integer quantity) {

this.quantity= quantity;

}publicInteger getCategoryId() {returncategoryId;

}publicvoidsetCategoryId(Integer categoryId) {

this.categoryId= categoryId;}publicString getName() {

returnname;}publicvoidsetName(String name) {

this.name= name;}publicString getImage() {

returnimage;

}publicvoidsetImage(String image) {this.image= image;

}publicDouble getUnitPrice() {

returnunitPrice;}publicvoidsetUnitPrice(Double unitPrice) {

this.unitPrice= unitPrice;}


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}

Lp truy xut dliu (DAO)Lp ny cha cc phng thc thao tc dliu (thm, sa, xa) v truy vn dliu.

Insert(): thm

Update(): sa

Delete(): xa

getXyz(): truy vn

Lp no c ch thch bi @Repository c th tim vo ProductController trong ng dng bi

@Autowire sdng sau ny.

CategoryDAO.java

packagecom.lycato.dao;

importjava.io.Serializable;

importjava.util.List;

importorg.springframework.beans.factory.annotation.Autowired;importorg.springframework.jdbc.core.BeanPropertyRowMapper;importorg.springframework.jdbc.core.JdbcTemplate;importorg.springframework.jdbc.core.RowMapper;importorg.springframework.stereotype.Repository;

importcom.lycato.entity.Category;

@RepositorypublicclassCategoryDAO{

/*** Inject t


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String sql = "DELETE FROM Categories WHERE Id=?";jdbc.update(sql, id);

}

/*** Truy vn 1 thc ththeo m* @paramid m thc thcn truy vn

* @returnthc thtruy vn c*/

publicCategory getById(Serializable id) {String sql = "SELECT * FROM Categories WHERE Id=?";returnjdbc.queryForObject(sql, getRowMapper(), id);

}

/*** Truy vn tt ccc thc th* @returndanh sch thc thtruy vn c*/

publicList getAll() {String sql = "SELECT * FROM Categories";returngetBySql(sql);

}

/*** Truy vn cc thc ththeo cu lnh sql* @paramsql cu lnh truy vn* @returndanh sch thc thtruy vn c*/

protectedList getBySql(String sql) {returnjdbc.query(sql, getRowMapper());

}

/*** nh xcu trc bn ghi theo thuc tnh ca bean* @returnnh xbn ghi theo thuc tnh bean*/

privateRowMapper getRowMapper() {

returnnewBeanPropertyRowMapper(Category.class);}

}

ProductDAO.java

packagecom.lycato.dao;

importjava.io.Serializable;importjava.util.List;

importorg.springframework.beans.factory.annotation.Autowired;importorg.springframework.jdbc.core.BeanPropertyRowMapper;importorg.springframework.jdbc.core.JdbcTemplate;importorg.springframework.jdbc.core.RowMapper;

importorg.springframework.stereotype.Repository;

importcom.lycato.entity.Product;

@RepositorypublicclassProductDAO{

/*** Inject t


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/*** Thm mi 1 thc th* @paramentity l thc thmi*/

publicvoidinsert(Product entity) {String sql = "INSERT INTO Products (Name, UnitPrice, Quantity, Image,

CategoryId) VALUES (?,?,?,?,?)";jdbc.update(sql, entity.getName(), entity.getUnitPrice(),

entity.getQuantity(), entity.getImage(), entity.getCategoryId());}

/*** Cp nht thc th* @paramentity l thc thcn cp nht*/

publicvoidupdate(Product entity) {String sql = "UPDATE Products SET Name=?, UnitPrice=?, Quantity=?, Image=?,

CategoryId=? WHERE Id=?";jdbc.update(sql, entity.getName(), entity.getUnitPrice(),

entity.getQuantity(), entity.getImage(), entity.getCategoryId(), entity.getId());}

/*** Xa thc ththeo m* @paramid m thc thcn xa*/

publicvoiddelete(Serializable id) {String sql = "DELETE FROM Products WHERE Id=?";jdbc.update(sql, id);

}

/*** Truy vn 1 thc ththeo m* @paramid m thc thcn truy vn* @returnthc thtruy vn c*/

publicProduct getById(Serializable id) {String sql = "SELECT * FROM Products WHERE Id=?";returnjdbc.queryForObject(sql, getRowMapper(), id);

}

/*** Truy vn tt ccc thc th* @returndanh sch thc thtruy vn c*/

publicList getAll() {String sql = "SELECT * FROM Products";returngetBySql(sql);

}

/**

* Truy vn cc thc ththeo cu lnh sql* @paramsql cu lnh truy vn* @returndanh sch thc thtruy vn c*/

protectedList getBySql(String sql) {returnjdbc.query(sql, getRowMapper());

}

/*** Truy vn thc ththeo tn* @paramname tn ca thc thcn truy vn


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* @returndanh sch thc thtruy vn c*/

publicList getByName(String name) {String sql = "SELECT * FROM Products WHERE Name LIKE ?";returnjdbc.query(sql, getRowMapper(), "%"+ name + "%");

}

/*** nh xcu trc bn ghi theo thuc tnh ca bean* @returnnh xbn ghi theo thuc tnh bean*/

privateRowMapper getRowMapper() {returnnewBeanPropertyRowMapper(Product.class);

}

/*** Truy vn thc ththeo m loi* @paramcategoryId l m loi* @returndanh sch thc thtruy vn c*/

publicList getByCategoryId(Integer categoryId) {String sql = "SELECT * FROM Products WHERE CategoryId=?";

returnjdbc.query(sql, getRowMapper(), categoryId);}

}

Bc 5: To giao din

Products.jsp

Spring MVC Seminar 2014

${c.namevn}|

${p.name}

$${p.unitPrice}


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nn-styles.cssnh ngha style trnh by cho mi mt hng.

ul{

padding: 5px;margin: 5px;list-style: none;display: inline-block;width: 250px;text-align: center;border-radius: 10px;box-shadow:005pxgray;

}li>img{

max-width: 180px;height: 200px;

}a{

text-decoration: none;color:blue;font-variant: small-caps;

}a:hover{

color:red;}

Bc 6: To Controllerpackagecom.lycato.controller;

importjava.util.List;

importorg.springframework.beans.factory.annotation.Autowired;importorg.springframework.stereotype.Controller;importorg.springframework.ui.ModelMap;importorg.springframework.web.bind.annotation.ModelAttribute;importorg.springframework.web.bind.annotation.RequestMapping;importorg.springframework.web.bind.annotation.RequestParam;

importcom.lycato.dao.CategoryDAO;importcom.lycato.dao.ProductDAO;importcom.lycato.entity.Category;

@ControllerpublicclassProductController {

/*** Inject t@RepositoryProductDAO*/@AutowiredProductDAO pdao;

/*** Inject t@RepositoryCategoryDAO*/@AutowiredCategoryDAO cdao;

/*** Truy vn Listv t vo model


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*/@ModelAttribute("categories")publicList getCategories() {

returncdao.getAll();}

/**

* GET|POST: products.htm*/@RequestMapping("products")publicString showProducts(ModelMap model,

@RequestParam(value="cate", required=false) Integer categoryId) {if(categoryId == null){

model.addAttribute("products", pdao.getAll());}else{

model.addAttribute("products", pdao.getByCategoryId(categoryId));}return"Products";

}}

Khi bn tng tc vo chng trnh tng:

STT Hnh ng Phng thc M t

1 Chy products.htm showProducts(), GET Hin thmenu loi v danh sch hng ha

2 Nhp [loi] showProducts(categoryId),POST

Hin thmenu loi v danh sch hng ha ca loic chn

Bc 7: Chyhttp://localhost:8080/SpringMVCJdbc/products.htm

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Lab6-JdbcTemplate Trinh Bay[1]