问题描述
- 关于Struts2的一个问题
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大侠们，昨晚测试的时候，结果成功显示，今天早上再来，就不成功了，后台一直报错：12:41:15.562 [http-8080-3] ERROR org.apache.struts2.dispatcher.Dispatcher - Could not find action or result /No2_Web/0 com.opensymphony.xwork2.config.ConfigurationException: There is no Action mapped for namespace [/] and action name [0] associated with context path [/No2_Web]. at com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:185) ~[xwork-core-2.3.28.jar:2.3.28] at org.apache.struts2.impl.StrutsActionProxy.prepare(StrutsActionProxy.java:63) ~[struts2-core-2.3.28.jar:2.3.28] at org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:37) ~[struts2-core-2.3.28.jar:2.3.28] at com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:58) ~[xwork-core-2.3.28.jar:2.3.28] at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:557) [struts2-core-2.3.28.jar:2.3.28] at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81) [struts2-core-2.3.28.jar:2.3.28] at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99) [struts2-core-2.3.28.jar:2.3.28] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) [catalina.jar:6.0.41] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) [catalina.jar:6.0.41] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) [catalina.jar:6.0.41] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) [catalina.jar:6.0.41] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) [catalina.jar:6.0.41] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) [catalina.jar:6.0.41] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [catalina.jar:6.0.41] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) [catalina.jar:6.0.41] at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861) [tomcat-coyote.jar:6.0.41] at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606) [tomcat-coyote.jar:6.0.41] at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) [tomcat-coyote.jar:6.0.41] at java.lang.Thread.run(Thread.java:619) [?:1.6.0_13]但我的struts.xml里并没有名字为0的action，JSP页面也没有访问0：
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> <constant name="struts.enable.DynamicMethodInvocation" value="true" /> <constant name="struts.devMode" value="true" /> <package name="default" namespace="/user" extends="struts-default"> <!-- 用户登录和注册 --> <action name="user*" class="customer.CustomerControl" method="user_{1}" > <result name="none"></result> </action> <!-- 首页菜单区展示 --> <action name="menulist" class="menu.MenuControl" method="menu_list" > <result name="redirect" type="redirect">/index_menu.jsp</result> </action> <action name="menuhotlist" class="menu.MenuControl" method="menu_list_hot" > <result name="redirect" type="redirect">/index_menu.jsp</result> </action> </package> <package name="admin" namespace="/admin" extends="struts-default"> <action name="adminlogin" class="admin.AdminControl" method="admin_login" > <result name="none"></result> </action> <action name="adminregister" class="admin.AdminControl" method="admin_register" > <result name="none"></result> </action> </package> </struts>具体操作：
A.jsp<ul> <li><a href="user/menuhotlist" target="menu">热销菜→</a></li> <li><a href="user/menulist?menu.type=1" target="menu">招牌菜→</a></li> <li><a href="user/menulist?menu.type=2" target="menu">主食区→</a></li> <li><a href="user/menulist?menu.type=3" target="menu">小吃区→</a></li> <li><a href="user/menulist?menu.type=4" target="menu">饮料区→</a></li> </ul> <div class="con_right"> <iframe name="menu" src="user/menuhotlist.action" class="iframe_menu"></iframe> </div>B.jsp
<table cellspacing="0px" style="width:795px; border-collapse:collapse; text-align:center;"> <% Menu menu = null; List list = new ArrayList(); list = (List)session.getAttribute("menuindex"); String str; int i; for(i=0;i<list.size();i++){ menu = (Menu)list.get(i); %> <tr> <td style="width:150px; height:160px; border-bottom:2px dashed #ccc; padding-top:5px; padding-bottom:5px;"><img src="<%=menu.getPic()%>" style="width:150px; height:150px;" ></td> <td style="width:295px; border-bottom:2px dashed #ccc; font-size:24px;"><%=menu.getName()%></td> <td style="border-bottom:2px dashed #ccc; font-size:24px;">￥<%=menu.getPrice()%></td> <td style="border-bottom:2px dashed #ccc; font-size:24px;"><%=menu.getSale()%> 份</td> <td style="width:170px; border-bottom:2px dashed #ccc;"><input type="button" value="加入购物车" onclick="Button1_onclick(this.id)" style="height:40px; font-size:18px;" /></td> </tr> <% } %> </table>menuhotlist.action:
public String menu_list_hot(){ HttpServletResponse response = ServletActionContext.getResponse(); Map session = ActionContext.getContext().getSession(); DBConnect db=new DBConnect(); Connection con=db.getCon(); Statement stat = null; ResultSet rs = null; String sql = "select top 10 m_name,m_price,m_pic,m_sale from menus order by m_sale desc"; List<Menu> list = new ArrayList(); try { stat = con.createStatement(); rs=stat.executeQuery(sql); while(rs.next()){ menu = new Menu(); menu.setName(rs.getString("m_name")); menu.setPrice(Float.parseFloat(rs.getString("m_price"))); menu.setPic(rs.getString("m_pic")); menu.setPic(rs.getString("m_sale")); list.add(menu); } con.close(); //放到session session.put("menuindex",list); //request.getRequestDispatcher("../index_menu.jsp").forward(request,response); //response.sendRedirect("../index_menu.jsp"); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } return "redirect"; }menulist.action
public String menu_list(){ HttpServletResponse response = ServletActionContext.getResponse(); Map session = ActionContext.getContext().getSession(); DBConnect db=new DBConnect(); Connection con=db.getCon(); PreparedStatement prepstmt = null; ResultSet rs = null; String typestr = ""; String sql = "select m_name,m_price,m_pic,m_sale from menus where m_type = ?"; List<Menu> list = new ArrayList(); switch(menu.getType()){ case 1:typestr="招牌";break; case 2:typestr="主食";break; case 3:typestr="小吃";break; case 4:typestr="饮料";break; default: } try { prepstmt = con.prepareStatement(sql); prepstmt.setString(1, typestr); rs = prepstmt.executeQuery(); while(rs.next()){ menu = new Menu(); menu.setName(rs.getString("m_name")); menu.setPrice(Float.parseFloat(rs.getString("m_price"))); menu.setPic(rs.getString("m_pic")); menu.setPic(rs.getString("m_sale")); list.add(menu); System.out.println(rs.getString("m_pic")); } con.close(); //放到session session.put("menuindex",list); //request.getRequestDispatcher("../index_menu.jsp").forward(request,response); //response.sendRedirect("../index_menu.jsp"); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } return "redirect"; }A.jsp请求action，action把结果放入session的一个List里，B.jsp再取出
解决方案
如果路径没错的话，可以重新部署下项目或是在struts.xml中添加input视图试试
解决方案二：
你这执行的是什么操作呢 能详细点吗
解决方案三：
struts2的validate在使用过程中的一个问题
struts2的validate在使用过程中的一个问题
struts2 的一个问题
时间： 2024-02-19 14:30:44