利用JBuilder 2005 开发Spring实例
2008-01-05 09:22:59 来源:WEB开发网核心提示: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,利用JBuilder 2005 开发Spring实例,选择菜单Tools-Configure-Li
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,注重到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
<?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>
<bean id="springappController" class="spring.SpringappController"/>
<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<props>
<prop key="/hello.htm">springappController</prop>
</props>
</property>
</bean>
</beans>
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轻易。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>
更多精彩
赞助商链接