[Laptrinh.vn] lap trinh Spring Framework 3

Spring application
Phiên bản: 0.1 2013-12-10
SPRING APPLICATION
XÂY DỰNG DEMO CHO ỨNG DỤNG SPRING
THUỘC TÍNH TÀI LIỆU
Tiêu đề: Xây dựng demo cho ứng dụng Spring
Chủ đề: Spring application
Tác giả: Laptrinh.vn
Từ khóa: Spring, ibatis

Spring application
Phiên bản: 0.1 2013-12-10
TABLE OF CONTENTS
THUẬT NGỮ...................................................................................................................................................3
GIỚI THIỆU.....................................................................................................................................................3
XÂY DỰNG ỨNG DỤNG...............................................................................................................................3
1.1. Dynamic Web project...................................................................................................................3
1.1.1. Create java web application..........................................................................................3
1.1.2. Xây dựng controller......................................................................................................5
1.1.3. Cấu hình thư mục jsp....................................................................................................6
1.1.4. Sử dụng Sitemap...........................................................................................................6
1.2. Connect Database.........................................................................................................................9
1.2.1. Sử dụng iBatis...............................................................................................................9
1.3. Displaytag, jstl & một số thư viện khác.....................................................................................13

Spring application
Phiên bản: 0.1 2013-12-10
THUẬT NGỮ
This section is intentionally left blank
GIỚI THIỆU
XÂY DỰNG ỨNG DỤNG
1.1. Dynamic Web project
1.1.1. Create java web application
Sử dụng thư viện Spring
Download: http://www.springsource.org/spring-framework
Copy vào thư mục lib

Spring application
Phiên bản: 0.1 2013-12-10
Thêm 2 thư viện để ghi log
log4j-1.2.17.jar commons-logging-1.1.1.jar
Chỉnh sửa file WEB-INFweb.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>Spring</display-name>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-
class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>

Spring application
Phiên bản: 0.1 2013-12-10
</web-app>
Thêm file WEB-INFdispatcher-servlet.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="springapp.web.controller" />
</beans>
1.1.2. Xây dựng controller
Tạo package springapp.web.controller
Tạo class: HelloController
package springapp.web.controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
/**
* Description: Hello controller
* @author DatNH
*
* Detail:
* - @: annotation java
*
*/
@Controller
public class HelloController {
/**
* Nhan request /hello, xu ly thong tin
* @return
*/
@RequestMapping("/hello")
public ModelAndView hello(Model model) {
// set session value
model.addAttribute("name", "DatNH");
return new ModelAndView("hello.jsp");
}

Spring application
Phiên bản: 0.1 2013-12-10
@RequestMapping("/helloworld")
public String helloworld(Model model) {
model.addAttribute("name", "DatNH");
return "hello.jsp";
}
}
Tạo file WebContent/hello.jsp
<html>
<head>
<title>Hello World</title>
</head>
<body>
<h1>Ch ngươ trình đ cượ xây d ngự d aự trên framework MVC Sping 3</h1>
<p>Xin chào: <b>${name}</b></p>
</body>
</html>
Kết quả
1.1.3. Cấu hình thư mục jsp
Thêm vào file dispatcher-servlet.xml
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WEB-INF/jsp/" p:suffix=".jsp" />
Sửa lại file controller
return new ModelAndView("hello");
Tạo thư mục WEB-INF/jsp và copy file hello.jsp vào
1.1.4. Sử dụng Sitemap
Download: http://www.opensymphony.com/sitemesh
Copy lib sitemesh-2.4.x.jar vào thư mục WEB-INF/lib

Spring application
Phiên bản: 0.1 2013-12-10
Thêm filter vào web.xml

<filter>
<filter-name>sitemesh</filter-name>
<filter-
class>com.opensymphony.module.sitemesh.filter.PageFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>sitemesh</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
Tạo một số thư mục trong WebContent/
• decorators : Thư mục gồm tất cả các file decorator (e.g. main.jsp, printable.jsp).
• includes: Thư mục gồm tất cả các file sẽ được include tới các file khác (e.g. header.jsp,
footer.jsp, copyright.jsp).
• images: Thư mục bao gồm tất cả các ảnh (e.g. background.gif, logo.gif).
• styles: Thư mục bao gồm tất cả CSS styles (e.g. ie4.css, ns4.css).
• scripts: Thư mục bao gồm tất cả các scripts (JavaScript, VBScript files).
Tạo file WEB-INF/decorators.xml
<decorators defaultdir="/decorators">
<decorator name="main" page="main.jsp">
<pattern>/*</pattern>
</decorator>
</decorators>
Tạo file: /includes/header.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
[HEADER]
<hr/>
Tạo file: /includes/footer.jsp
<hr/>
[FOOTER]

Spring application
Phiên bản: 0.1 2013-12-10
Tạo file: /includes/taglibs.jsp
<%@ taglib prefix="decorator" uri="http://www.opensymphony.com/sitemesh/decorator" %>
Tạo 1 file decorator : /decorators/main.jsp
<%@ include file="/includes/taglibs.jsp"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>[springapp] <decorator:title/> </title>
</head>
<body>
<div id="container">
<%@ include file="/includes/header.jsp"%>
<div id="content">
<decorator:body />
</div>
<%@ include file="/includes/footer.jsp"%>
</div>
</body>
</html>
Kết quả
Cấu trúc project

Spring application
Phiên bản: 0.1 2013-12-10
1.2. Connect Database
Tải thư viện JDBC driver phù hợp, ở đây dùng MySQL
Tạo file context.xml trong META-INF
<Context>
<Resource
name="jdbc/SpringMySqlDS"
auth="Container"
type="javax.sql.DataSource"
driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3306/spring"
removeAbandoned="true"
maxActive="75"
maxIdle="30"
maxWait="-1"
username="root"
password="nguyendat"
validationQuery="select 1 from dual"
/>
</Context>
1.2.1. Sử dụng iBatis
Download: http://code.google.com/p/mybatis/

Spring application
Phiên bản: 0.1 2013-12-10
Project Description Links
MyBatis 3 SQL Mapping Framework for Java download | docs
Generator Code generator for MyBatis and iBATIS download | docs
Trong web.xml, tạo một reference tới resource SpringMySqlDS
<resource-ref>
<description>Chat Datasource</description>
<res-ref-name>jdbc/SpringMySqlDS</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
Tạo các package
• springapp.core.dao
• springapp.core.dao.xml
• springapp.core.model
• springapp.core.service
Copy mybatis-3.2.0-SNAPSHOT.jar vào WEB-INF/lib
Tạo file mybatisConfig.xml trong springapp.core.dao.xml
Cấu hình environments:
<configuration>
<environments default="development">
<environment id="development">
<transactionManager type="MANAGED">
<property name="closeConnection" value="true" />
</transactionManager>
<dataSource type="JNDI">
<property name="data_source"
value="java:comp/env/jdbc/SpringMySqlDS" />
</dataSource>
</environment>
</environments>
</configuration>
Tạo file mapping database table và java class
• Khai báo và mapping column table với thuộc tính trong java
• Thực hiện câu lệnh generator

Spring application
Phiên bản: 0.1 2013-12-10
cd /d C:UsersPhoenixworkspacejunoSpringgenerator (tùy thư mục nhé)
java -jar mybatis-generator-core-1.3.1.jar -configfile generatorConfig.xml -overwrite -tables user
Các class đã được generator
UserMapper.java UserMapper.xml User.java
Xử lý dữ liệu
• Tạo service class
o Interface: UserServiceLocal.java
o Class: UserService
• Tạo bean cho UserService
o File web.xml
Thêm cấu hình applicationContext.xml
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/applicationContext.xml
</param-value>
</context-param>
<listener>
<listener-
class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
o File applicationContext.xml
Application context: Khai báo các bean session sử dụng trong chương trình.
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/jee
http://www.springframework.org/schema/jee/spring-jee-2.5.xsd">
<bean id="userService" class="springapp.core.service.UserService" />
</beans>

Spring application
Phiên bản: 0.1 2013-12-10
o File myBatisConfig.xml
<mapper resource="springapp/core/dao/xml/UserMapper.xml" />
• Xử lý Controller
o File UserController.java
package springapp.web.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import springapp.core.model.User;
import springapp.core.service.UserServiceLocal;
/**
* User controller
* @author DatNh
*
*/
@Controller
public class UserController {
@Autowired
private UserServiceLocal userService;
@RequestMapping("/user")
public String helloworld(Model model) {
User user = userService.selectByPrimaryKey(1);
model.addAttribute("user", user);
return "user";
}
}
o File user.jsp
<html>
<head>
</head>
<body>
<h1>User demo</h1>
<p>Xin chào: <b>${user.username}</b></p>
</body>
</html>

Spring application
Phiên bản: 0.1 2013-12-10
o File UserServiceLocal.java
package springapp.core.service;
/**
*
* @author DatNH
*
*/
public interface UserServiceLocal {
User selectByPrimaryKey(int id);
}
o File UserService.java
package springapp.core.service;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import springapp.core.dao.UserMapper;
/**
* User service
* @author DatNH
*
*/
public class UserService implements UserServiceLocal {
@Override
public User selectByPrimaryKey(int id) {
SqlSessionFactory sqlMapper = MyBatisService.getSessionFactory();
SqlSession sqlSession = sqlMapper.openSession(true);
UserMapper mapper = sqlSession.getMapper(UserMapper.class);
User user = mapper.selectByPrimaryKey(id);
sqlSession.close();
return user;
}
}
1.3. Displaytag, jstl & một số thư viện khác
Copy thư viện

Spring application
Phiên bản: 0.1 2013-12-10
displaytag-1.2.jar
jstl.jar javax.servlet.jsp.jstl-1.2.1.jar javax.servlet.jsp.jstl-api-1.2.1.jar
aopalliance-1.0.jar commons-lang-2.6.jar commons-beanutils-1.8.3.jar
File taglibs.jsp
@RequestMapping("/user/list")
public String list(Model model) {
List<User> userList = userService.getAll();
model.addAttribute("userList", userList);
return "userList";
}
File UserServiceLocal.java
List<User> getAll();
File UserService.java
@Override
public List<User> getAll() {
SqlSessionFactory sqlMapper = MyBatisService.getSessionFactory();
SqlSession sqlSession = sqlMapper.openSession(true);
UserMapper mapper = sqlSession.getMapper(UserMapper.class);
List<User> userList = mapper.getAll();
sqlSession.close();
return userList;
}
File UserMapper.java
List<User> getAll();
File UserMapper.xml

Spring application
Phiên bản: 0.1 2013-12-10
<select id="getAll" resultMap="BaseResultMap">
select
<include refid="Base_Column_List" />
from user
</select>
File userList.jsp
<%@ include file="/includes/taglibs.jsp"%>
<html>
<head>
</head>
<body>
<h1>User List</h1>
<div>
<display:table name="${userList}" class="simple wid100" id="user"
requestURI="" pagesize="15">
<display:column title="STT" class="stt" > <c:out value="$
{user_rowNum}"/> </display:column>
<display:column title="Username" property="username" />
<display:column title="Password" property="password"/>
<display:column title="Timestamp" property="timestamp"/>
<display:column title="Create Date" property="createDate"
format="{0,date,dd/MM/yyyy HH:mm:ss}" />
</display:table>
</div>
</body>
</html>
Kết quả

[Laptrinh.vn] lap trinh Spring Framework 3

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