用struts做的基于web的小程序页面显示空白!
代码如下:
web.xml
<?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>
<display-name> test </display-name>
<listener>
<listener-class> com.common.TimerListener </listener-class>
</listener>
<filter>
<filter-name> EncodingFilter </filter-name>
<display-name> EncodingFilter </display-name>
<filter-class> com.common.EncodingFilter </filter-class>
<init-param>
<param-name> encoding </param-name>
<param-value> UTF-8 </param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name> EncodingFilter </filter-name>
<url-pattern> /* </url-pattern>
</filter-mapping>
<servlet>
<servlet-name> action </servlet-name>
<servlet-class> org.apache.struts.action.ActionServlet </servlet-class>
<init-param>
<param-name> debug </param-name>
<param-value> 2 </param-value>
</init-param>
<init-param>
<param-name> config </param-name>
<param-value> /WEB-INF/struts-config.xml </param-value>
</init-param>
<load-on-startup> 2 </load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name> action </servlet-name>
<url-pattern> *.do </url-pattern>
</servlet-mapping>
<session-config>
<session-timeout> 60 </session-timeout>
</session-config>
<welcome-file-list>
<welcome-file> /jsp/main.jsp </welcome-file>
</welcome-file-list>
<taglib>
<taglib-uri> /tags/struts-bean </taglib-uri>
<taglib-location> /WEB-INF/tld/struts-bean.tld </taglib-location>
</taglib>
<taglib>
<taglib-uri> /tags/struts-html </taglib-uri>
<taglib-location> /WEB-INF/tld/struts-html.tld </taglib-location>
</taglib>
<taglib>
<taglib-uri> /tags/struts-logic </taglib-uri>
<taglib-location> /WEB-INF/tld/struts-logic.tld </taglib-location>
</taglib>
<taglib>
<taglib-uri> /tags/struts-nested </taglib-uri>
<taglib-location> /WEB-INF/tld/struts-nested.tld </taglib-location>
</taglib>
<taglib>
<taglib-uri> /tags/struts-tiles </taglib-uri>
<taglib-location> /WEB-INF/tld/struts-tiles.tld </taglib-location>
</taglib>
</web-app>
struts-config.xml配置如下:
<?xml version= "1.0 " encoding= "UTF-8 "?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.1//EN " "http://jakarta.apache.org/struts/dtds/struts-config_1_2.dtd ">
<struts-config>
<form-beans>
<form-bean name= "fileUploadForm " type= "com.form.FileUploadForm "/>
</form-beans>
<global-forwards>
<forward name= "SUCCESS_KEY " path= "/jsp/main.jsp "/>
</global-forwards>
<action-mappings>
<action name= "fileUploadForm " path= "/main " scope= "request " type= "com.action.FileUploadAction " input= "/jsp/main.jsp " validate= "false ">
<forward name= "SUCCESS " path= "/jsp/main.jsp "/>
</action>
</action-mappings>
<message-resources key= "cnM " parameter= "label_zh_CN "/>
<message-resources parameter= "label "/>
</struts-config>
action文件如下:
package com.action;
import java.io.OutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.util.MessageResources;
import com.bean.FileUploadBean;
import com.common.Constants;;
/**
* @author user
*
* TODO 要更改此生成的类型注释的模板，请转至
* 窗口 － 首选项 － Java － 代码样式 － 代码模板
*/
public class FileUploadAction extends Action{
public ActionForward execute(ActionMapping mapping,ActionForm actionform,
HttpServletRequest request, HttpServletResponse response, MessageResources res)
throws Exception {
response.setContentType( "charset=UTF-8 ");
String clg= "cnM ";
request.getSession().setAttribute( "LDIFF ", clg);
String s= " ";
FileUploadBean up=new FileUploadBean();
OutputStream out = null;
up.doUpload(request);
s=res.getMessage( "lable.wenjianming ")+up.getFilename()+ "\n "+
res.getMessage( "lable.leixing ") + up.getContentType()+ "\n "+
res.getMessage( "lable.zuozhe ") + up.getContentType()+ "\n "+
res.getMessage( "lable.gongsi ") + up.getContentType()+ "\n "+
res.getMessage( "lable.shuoming ") + up.getContentType();
out.write(s.getBytes( "UTF-8 "));
out.flush();
out.close();
return mapping.findForward(Constants.SUCCESS_KEY);
}
}
jsp文件如下:
<%@ page contentType= "text/html; charset=UTF-8 " language= "java "%>
<%@ taglib uri= "/tags/struts-html " prefix= "html " %>
<%@ taglib uri= "/tags/struts-bean " prefix= "bean " %>
<%@ taglib uri= "/tags/struts-logic " prefix= "logic " %>
<%
String lg = (String)session.getAttribute( "LDIFF ");
%>
<html:html>
<head>
<title> <bean:message bundle= ' <%=lg%> ' key= "lable.shangzai "/> </title>
</head>
<body>
<html:form action= "main.do " method= "post ">
<bean:message bundle= ' <%=lg%> ' key= "lable.zuozhe "/> <input type=text name=author>
<br>
<bean:message bundle= ' <%=lg%> ' key= "lable.gongsi "/> <input type=text name=company>
<br>
<bean:message bundle= ' <%=lg%> ' key= "lable.shuoming "/> <textarea name=comment> </textarea>
<br>
<bean:message bundle= ' <%=lg%> ' key= "lable.xuanze "/> <input type=file name=filename>
<br>
<bean:message bundle= ' <%=lg%> ' key= "lable.miaoshu "/> <input type=text name=description>
<br>
<input type=submit value= "Upload ">
</html:form>
</body>
</html:html>
如果单纯的运行jsp页面,可以显示页面
如果运行.do文件,就会显示空白页面
所有的可能出现的问题都考虑了,还是不行,请高手指教
不胜感激!
[解决办法]
路径（jsp 和 javaSource的）都正确？
