利用JBuilder 2005 开发Spring实例

内容摘要

　　1. 下载spring包，网址如下：http://www.springframework.org/download.html　　解压后的目录中包含了dist、lib等子目录　　2. 在JBuilder2005中增加spring库，选

文章正文

　　1. 下载spring包，网址如下：

http://www.springframework.org/download.html

　　解压后的目录中包含了dist、lib等子目录

　　2. 在JBuilder2005中增加spring库，选择菜单Tools-Configure-Libraries，在弹出的对话框中点击New按钮，输入spring库的名称：spring，点击Add按钮，将dist目录中的所有jar文件增加到spring库中

　　3. 新建工程文件，选菜单File-New Project，给工程文件取名为myProject

　　设置工程文件的属性，选菜单Project-Project Properties，选择Tomcat作为服务器，将spring库加入Path/Required Libraries。因为例子中用到了log4j，将包含了log4j的库加入Path/Required Libraries，注意到lib目录下有两个子目录log4j和jakarta-commons，它们的用法是不同的,如下面的代码片断所示：

　　log4j

import org.apache.log4j.Level;
import org.apache.log4j.Logger;

public class SpringappController implements Controller {
　/** Logger for this class and subclasses */

　static Logger logger = Logger.getLogger(SpringappController.class);
　jakarta-commons
　import org.apache.commons.logging.Log;
　import org.apache.commons.logging.LogFactory;
　public class SpringappController implements Controller {
　　/** Logger for this class and subclasses */
　　protected final Log logger = LogFactory.getLog(getClass());

　　4. 新建Web模块，选菜单File-New，给Web模块取名为springapp

　　5. 新建hello.jsp文件如下：

＜%@ page contentType="text/html; charset=Big5" %＞
＜html＞
　＜head＞＜title＞Example :: Spring Application＜/title＞＜/head＞
＜body＞
　＜h1＞Hello - Spring Application＜/h1＞
　＜p＞Greetings.＜/p＞
＜/body＞
＜/html＞

　　6. 新建类文件SpringappController.java如下：

package spring;

import org.springframework.web.servlet.mvc.Controller;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

//import org.apache.commons.logging.Log;
//import org.apache.commons.logging.LogFactory;

import org.apache.log4j.Level;
import org.apache.log4j.Logger;

public class SpringappController implements Controller {
　/** Logger for this class and subclasses */
　// protected final Log logger = LogFactory.getLog(getClass());

　static Logger logger = Logger.getLogger(SpringappController.class);
　public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response)
　throws ServletException, IOException {
　　logger.info("SpringappController - returning hello view");
　　return new ModelAndView("hello.jsp");
　}
}

　　7. 修改web.xml文件

＜?xml version="1.0" encoding="UTF-8"?＞
＜!DOCTYPE web-app PUBLIC '-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN' 'http://java.sun.com/dtd/web-app_2_3.dtd'＞

＜web-app＞

　＜servlet＞
　　＜servlet-name＞springapp＜/servlet-name＞
　　＜servlet-class＞org.springframework.web.servlet.DispatcherServlet＜/servlet-class＞
　　＜load-on-startup＞1＜/load-on-startup＞
　＜/servlet＞

　＜servlet-mapping＞
　　＜servlet-name＞springapp＜/servlet-name＞
　　＜url-pattern＞*.htm＜/url-pattern＞
　＜/servlet-mapping＞

　＜welcome-file-list＞
　　＜welcome-file＞
　　　index.jsp
　　＜/welcome-file＞
　＜/welcome-file-list＞

＜/web-app＞

　　8. 在web-inf目录中新建springapp-servlet.xml文件如下

　　9. 在web-inf目录中新建log4j.properties文件如下：

log4j.rootCategory=INFO, stdout, logfile

log4j.appender.stdout=org.apache.log4j.ConsoleAppender

log4j.appender.stdout.layout=org.apache.log4j.PatternLayout

log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - ＜%m＞%n

log4j.appender.logfile=org.apache.log4j.RollingFileAppender

log4j.appender.logfile.File=springapp.log

log4j.appender.logfile.MaxFileSize=512KB

# Keep three backup files

log4j.appender.logfile.MaxBackupIndex=3

log4j.appender.logfile.layout=org.apache.log4j.PatternLayout

#Pattern to output : date priority [category] - ＜message＞line_separator

log4j.appender.logfile.layout.ConversionPattern=%d %p [%c] - ＜%m＞%n

　　10. 设置web模块springapp的属性Content，加入文件log4j.properties，因为classes目录是自动产生的，这一步是为了把文件log4j.properties加到classes目录。

　　11. 设置Run Configuration，选菜单Run-Configurations，新建一个Run Configuration，Type选Server，Launch URI设置为：/springapp/hello.htm，给它取名为hello

　　12. 运行，你会在messages窗口中看到如下信息：

　　資訊: Server startup in 9253 ms

2004-11-05 15:05:00,585 INFO [spring.SpringappController] - ＜SpringappController - returning hello view＞

2004/11/5 下午 03:05:00 org.springframework.web.servlet.view.AbstractCachingViewResolver resolveViewName

　　資訊: Cached view 'hello.jsp'

　　在myProject/Tomcat/springapp.log文件中增加了一行如下所示：

2004-11-05 15:11:32,348 INFO [spring.SpringappController] - ＜SpringappController - returning hello view＞

　　这说明你已成功建立了基本的spring应用。

　　jstl的支持，设置工程文件的属性，选菜单Project-Project Properties，将jstl库加入Path/Required Libraries。

　　14. 改进前面的例子，改进的文件如下：

　　增加“header”文件include.jsp，这是一些jsp文件的公用部分，这样可以使得开发和维护更容易。所有jsp文件放在web-inf/jsp目录下，为的是只有Controller可以访问View。

　　springapp/war/WEB-INF/jsp/include.jsp

＜%@ page session="false"%＞

＜%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %＞
＜%@ taglib prefix="fmt" uri="http://java.sun.com/jstl/fmt" %＞

　　利用JSTL，＜c:redirect＞将页面重定向到Controller，这样就建立了index.jsp和应用架构的联系。

　　springapp/war/index.jsp

＜%@ include file="/WEB-INF/jsp/include.jsp" %＞

＜%-- Redirected because we can't set the welcome page to a virtual URL. --%＞
＜c:redirect url="/hello.htm"/＞

　　利用JSTL的＜c:out＞标记，把从Model提取的，传递给View的当前日期和时间作为输出。

　　springapp/war/WEB-INF/jsp/hello.jsp

＜%@ include file="/WEB-INF/jsp/include.jsp" %＞

＜html＞
＜head＞＜title＞Hello :: Spring Application＜/title＞＜/head＞
＜body＞
　＜h1＞Hello - Spring Application＜/h1＞
　＜p＞Greetings, it is now ＜c:out value="${now}"/＞
　＜/p＞
＜/body＞
＜/html＞

　　在SpringappController.java中增加包含了当前日期和时间的string作为Model

　　springapp/src/SpringappController.java

import org.springframework.web.servlet.mvc.Controller;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import java.io.IOException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class SpringappController implements Controller {

　/** Logger for this class and subclasses */
　protected final Log logger = LogFactory.getLog(getClass());

　public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response)
　throws ServletException, IOException {

　　String now = (new java.util.Date()).toString();
　　logger.info("returning hello view with " + now);

　　return new ModelAndView("WEB-INF/jsp/hello.jsp", "now", now);
　}
}

　　15. 浏览改进后的结果http://localhost:8080/springapp，首先访问index.jsp，然后重定向到hello.htm，接著把控制交给Controller，Controller把日期和时间传送给View。

　　只能在浏览器这样测试。在JBuilder2005中设置Run Configuration不能访问http://localhost:8080/springapp，但可以访问http://localhost:8080/springapp/index.jsp

　　在上面的例子中，Controller指定了View的完全路径，使得Controller和View之间存在不必要的依赖。为了移出这种依赖，我们可以用类ResourceBundleViewResolver 和 a SimpleUrlHandlerMapping在属性文件中定义这种依赖，对于简单的情形，我们也可以利用InternalResourceViewResolver设置前缀和后缀，下面就用第二种方法。修改文件springapp-servlet.xml包含ViewResolver设置，我们还选择使用JstlView，这使得我们可以结合使用JSTL和message resource bundles，因此可以支持国际化。

　　springapp/war/WEB-INF/springapp-servlet.xml

　　现在，我们就可以移出Controller中View名称的前缀和后缀了。

springapp/src/SpringappController.java

import org.springframework.web.servlet.mvc.Controller;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import java.io.IOException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class SpringappController implements Controller {

　/** Logger for this class and subclasses */
　protected final Log logger = LogFactory.getLog(getClass());
　
　public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response)
　throws ServletException, IOException {

　　String now = (new java.util.Date()).toString();
　　logger.info("returning hello view with " + now);

　　return new ModelAndView("hello", "now", now);
　}
}

　　这样修改后的例子应该仍能运行。

　　16. 增加商业逻辑类

　　为了分开Web逻辑和商业逻辑，我们建立两个不同的包，web和bus

　　springapp/src/bus/Product.java

package bus;

import java.io.Serializable;

public class Product implements Serializable {

　private String description;
　private Double price;

　public void setDescription(String s) {
　　description = s;
　}

　public String getDescription() {
　　return description;
　}

　public void setPrice(Double d) {
　　price = d;
　}

　public Double getPrice() {
　　return price;
　}

}

　　springapp/src/bus/ProductManager.java

package bus;

import java.io.Serializable;
import java.util.List;

public class ProductManager implements Serializable {

　private List products;
　public void setProducts(List p) {
　　products = p;
　}

　public List getProducts() {
　　return products;
　}

}

　　修改SpringappController.java

　　springapp/src/web/SpringappController.java

package web;

import org.springframework.web.servlet.mvc.Controller;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import java.io.IOException;
import java.util.Map;
import java.util.HashMap;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import bus.Product;
import bus.ProductManager;

public class SpringappController implements Controller {

　/** Logger for this class and subclasses */
　protected final Log logger = LogFactory.getLog(getClass());

　private ProductManager prodMan;

　public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response)
　throws ServletException, IOException {

　　String now = (new java.util.Date()).toString();
　　logger.info("returning hello view with " + now);

　　Map myModel = new HashMap();
　　myModel.put("now", now);
　　myModel.put("products", getProductManager().getProducts());

　　return new ModelAndView("hello", "model", myModel);
　}

　public void setProductManager(ProductManager pm) {
　　prodMan = pm;
　}

　public ProductManager getProductManager() {
　　return prodMan;
　}
}

　　17. 修改View以便显示商业数据，增加对message bundle的支持

　　springapp/war/WEB-INF/jsp/hello.jsp

＜%@ include file="/WEB-INF/jsp/include.jsp" %＞

＜html＞
＜head＞＜title＞＜fmt:message key="title"/＞＜/title＞＜/head＞
＜body＞
＜h1＞＜fmt:message key="heading"/＞＜/h1＞
＜p＞＜fmt:message key="greeting"/＞＜c:out value="${model.now}"/＞
＜/p＞
＜h3＞Products＜/h3＞
＜c:forEach items="${model.products}" var="prod"＞
＜c:out value="${prod.description}"/＞＜i＞$＜c:out value="${prod.price}"/＞＜/i＞＜br＞＜br＞
＜/c:forEach＞
＜/body＞
＜/html＞

　　18. 增加一些测试数据

　　我们现在还不打算增加代码，从数据库装载商业对象。我们只springapp-servlet.xml中增加bean和messageSource设置，提供一些测试数据和对messages resource bundle的支持。

　　springapp/war/WEB-INF/springapp-servlet.xml

　　19. 增加message bundle

　　springapp/war/WEB-INF/classes/messages.properties

title=SpringApp
heading=Hello :: SpringApp
greeting=Greetings, it is now

　　20. 浏览改进后的结果http://localhost:8080/springapp

　　实现数据库持久层

　　21. 设置HSQL数据库，在JBuilder2005中增加HSQL库，选择菜单Tools-Configure-Libraries，在弹出的对话框中点击New按钮，输入HSQL库的名称：HSQL，点击Add按钮，将lib/hsqldb目录下的文件hsqldb.jar增加到HSQL库中。

　　选择菜单Enterprise-Enterprise Setup，在弹出的对话框中选择Database Drivers，按Add按钮增加HSQL库。

　　选择菜单Tools-Database Pilot，然后选择菜单Files-New输入Driver：org.hsqldb.jdbcDriver，URL：jdbc:hsqldb:db/test，双击hsqldb:db/test，输入UserName：sa，不必输入Passsword。输入如下的SQL语句并执行

CREATE TABLE products (

id INTEGER NOT NULL PRIMARY KEY,

description varchar(255),

price decimal(15,2)

);

CREATE INDEX products_description ON products(description);

INSERT INTO products (id, description, price) values(1, 'Lamp', 5.78);

INSERT INTO products (id, description, price) values(2, 'Table', 75.29);

INSERT INTO products (id, description, price) values(3, 'Chair', 22.81);

　　这样就会在JBuilder_Home/bin目录下创建一个目录db，存放了数据库test的数据

　　22. 创建JDBC DAO (Data Access Object)实现

　　springapp/src/db/ProductManagerDao.java

package db;

import bus.Product;
import java.util.List;

public interface ProductManagerDao {

public List getProductList();

public void increasePrice(Product prod, int pct);

}

　　springapp/src/db/ProductManagerDaoJdbc.java

package db;

import bus.Product;
import java.util.List;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import javax.sql.DataSource;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.jdbc.object.MappingSqlQuery;
import org.springframework.jdbc.object.SqlUpdate;
import org.springframework.jdbc.core.SqlParameter;

public class ProductManagerDaoJdbc implements ProductManagerDao {

　/** Logger for this class and subclasses */
　protected final Log logger = LogFactory.getLog(getClass());

　private DataSource ds;

　public List getProductList() {
　　logger.info("Getting products!");
　　ProductQuery pq = new ProductQuery(ds);
　　return pq.execute();
　}

　public void increasePrice(Product prod, int pct) {
　　logger.info("Increasing price by " + pct + "%");
　　SqlUpdate su = new SqlUpdate(ds, "update products set price = price * (100 + ?) / 100 where id = ?");
　　su.declareParameter(new SqlParameter("increase", Types.INTEGER));
　　su.declareParameter(new SqlParameter("ID", Types.INTEGER));
　　su.compile();
　　Object[] oa = new Object[2];
　　oa[0] = new Integer(pct);
　　oa[1] = new Integer(prod.getId());
　　int count = su.update(oa);
　　logger.info("Rows affected: " + count);
　}

　public void setDataSource(DataSource ds) {
　　this.ds = ds;
　}

　class ProductQuery extends MappingSqlQuery {
　　ProductQuery(DataSource ds) {
　　　super(ds, "SELECT id, description, price from products");
　　　compile();
　　}

　　protected Object mapRow(ResultSet rs, int rowNum) throws SQLException {
　　　Product prod = new Product();
　　　prod.setId(rs.getInt("id"));
　　　prod.setDescription(rs.getString("description"));
　　　prod.setPrice(new Double(rs.getDouble("price")));
　　　return prod;
　　}
　}
}

　　springapp/src/bus/Product.java

package bus;

import java.io.Serializable;

public class Product implements Serializable {

private int id;
private String description;
private Double price;

public void setId(int i) {
id = i;
}

public int getId() {
return id;
}

public void setDescription(String s) {
description = s;
}

public String getDescription() {
return description;
}

public void setPrice(Double d) {
price = d;
}

public Double getPrice() {
return price;
}

}

　　springapp/src/test/TestProductManagerDaoJdbc.java

package tests;

import java.util.List;
import java.util.ArrayList;
import junit.framework.TestCase;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import db.ProductManagerDaoJdbc;
import bus.Product;

public class TestProductManagerDaoJdbc extends TestCase {

private ProductManagerDaoJdbc pmdao;

public void setUp() {
pmdao = new ProductManagerDaoJdbc();
DriverManagerDataSource ds = new DriverManagerDataSource();
ds.setDriverClassName("org.hsqldb.jdbcDriver");
ds.setUrl("jdbc:hsqldb:db/test");
ds.setUsername("sa");
ds.setPassword("");
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());
}

}

　　23. 修改Web应用使其使用数据库持久层

　　springapp/src/bus/ProductManager.java

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.listIterator();
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);
}

}

}

　　springapp/war/WEB-INF/springapp-servlet.xml

＜?xml version="1.0" encoding="UTF-8"?＞
＜!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
"http://www.springframework.org/dtd/spring-beans.dtd"＞

＜!--
- Application context definition for "springapp" DispatcherServlet.
--＞

＜beans＞

＜!-- Controller for the initial "Hello" page --＞
＜bean id="springappController" class="web.SpringappController"＞
＜property name="productManager"＞
＜ref bean="prodMan"/＞
＜/property＞
＜/bean＞

＜!-- Validator and Form Controller for the "Price Increase" page --＞
＜bean id="priceIncreaseValidator" class="bus.PriceIncreaseValidator"/＞
＜bean id="priceIncreaseForm" class="web.PriceIncreaseFormController"＞
＜property name="sessionForm"＞＜value＞true＜/value＞＜/property＞
＜property name="commandName"＞＜value＞priceIncrease＜/value＞＜/property＞
＜property name="commandClass"＞＜value＞bus.PriceIncrease＜/value＞＜/property＞
＜property name="validator"＞＜ref bean="priceIncreaseValidator"/＞＜/property＞
＜property name="formView"＞＜value＞priceincrease＜/value＞＜/property＞
＜property name="successView"＞＜value＞hello.htm＜/value＞＜/property＞
＜property name="productManager"＞
＜ref bean="prodMan"/＞
＜/property＞
＜/bean＞

＜bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"＞
＜property name="driverClassName"＞＜value＞org.hsqldb.jdbcDriver＜/value＞＜/property＞
＜property name="url"＞
＜value＞jdbc:hsqldb:/home/trisberg/workspace/springapp/db/test＜/value＞
＜/property＞
＜property name="username"＞＜value＞sa＜/value＞＜/property＞
＜property name="password"＞＜value＞＜/value＞＜/property＞
＜/bean＞

＜bean id="prodManDao" class="db.ProductManagerDaoJdbc"＞
＜property name="dataSource"＞
＜ref bean="dataSource"/＞
＜/property＞
＜/bean＞

＜bean id="prodMan" class="bus.ProductManager"＞
＜property name="productManagerDao"＞
＜ref bean="prodManDao"/＞
＜/property＞
＜!--
＜property name="products"＞
＜list＞
＜ref bean="product1"/＞
＜ref bean="product2"/＞
＜ref bean="product3"/＞
＜/list＞
＜/property＞
--＞
＜/bean＞

＜!--
＜bean id="product1" class="bus.Product"＞
＜property name="description"＞＜value＞Lamp＜/value＞＜/property＞
＜property name="price"＞＜value＞5.75＜/value＞＜/property＞
＜/bean＞

＜bean id="product2" class="bus.Product"＞
＜property name="description"＞＜value＞Table＜/value＞＜/property＞
＜property name="price"＞＜value＞75.25＜/value＞＜/property＞
＜/bean＞

＜bean id="product3" class="bus.Product"＞
＜property name="description"＞＜value＞Chair＜/value＞＜/property＞
＜property name="price"＞＜value＞22.79＜/value＞＜/property＞
＜/bean＞
--＞

＜bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource"＞
＜property name="basename"＞＜value＞messages＜/value＞＜/property＞
＜/bean＞

＜bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"＞
＜property name="mappings"＞
＜props＞
＜prop key="/hello.htm"＞springappController＜/prop＞
＜prop key="/priceincrease.htm"＞priceIncreaseForm＜/prop＞
＜/props＞
＜/property＞
＜/bean＞

＜bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"＞
＜property name="viewClass"＞
＜value＞org.springframework.web.servlet.view.JstlView＜/value＞
＜/property＞
＜property name="prefix"＞＜value＞/WEB-INF/jsp/＜/value＞＜/property＞
＜property name="suffix"＞＜value＞.jsp＜/value＞＜/property＞
＜/bean＞
＜/beans＞

　　springapp/src/tests/MockProductManagerDaoImpl.java

package tests;

import bus.Product;
import java.util.List;
import db.ProductManagerDao;
import bus.Product;

public class MockProductManagerDaoImpl implements ProductManagerDao {

private List products;

public void setProducts(List p) {
products = p;
}

public List getProductList() {
return products;
}

public void increasePrice(Product prod, int pct) {
double newPrice = prod.getPrice().doubleValue() * (100 + pct)/100;
prod.setPrice(new Double(newPrice));
}

}

　　springapp/src/tests/WEB-INF/springapp-servlet.xml

　　springapp/src/tests/TestProductManager .java

package tests;

import java.util.List;
import java.util.ArrayList;
import junit.framework.TestCase;
import db.ProductManagerDao;
import bus.ProductManager;
import bus.Product;

public class TestProductManager extends TestCase {

private ProductManager pm;

public void setUp() {
pm = new ProductManager();
Product p = new Product();
p.setDescription("Chair");
p.setPrice(new Double("20.50"));
ArrayList al = new ArrayList();
al.add(p);
p = new Product();
p.setDescription("Table");
p.setPrice(new Double("150.10"));
al.add(p);
/*
pm.setProducts(al);
*/
MockProductManagerDaoImpl pmdao = new MockProductManagerDaoImpl();
pmdao.setProducts(al);
pm.setProductManagerDao(pmdao);
pm.getProducts();
}

public void testGetProducs() {
List l = pm.getProducts();
Product p1 = (Product) l.get(0);
assertEquals("Chair", p1.getDescription());
Product p2 = (Product) l.get(1);
assertEquals("Table", p2.getDescription());
}

public void testIncreasePrice() {
pm.increasePrice(10);
List l = pm.getProducts();
Product p = (Product) l.get(0);
assertEquals(new Double("22.55"), p.getPrice());
p = (Product) l.get(1);
assertEquals(new Double("165.11"), p.getPrice());
}

}

代码注释

[!--zhushi--]

上一篇 Spring Framework标记库初学指南下一篇 Java入门需掌握的30个基本概念

利用JBuilder 2005 开发Spring实例

作者：喵哥笔记