[英]Unable to find forward in struts
FormBackup.java
package beans;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
public class FormBackup extends ActionForm{
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public ActionErrors validate(ActionMapping mapping,HttpServletRequest request) {
ActionErrors ae = new ActionErrors();
if(name.equals(""))
ae.add("name",new ActionMessage("msg"));
return ae;
}
}
FormController.java
package beans;
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;
public class FormController extends Action{
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request,
HttpServletResponse response) throws Exception {
String name=request.getParameter("name");
request.setAttribute("res", "Hello..." +name);
return mapping.findForward("success");
}
}
索引.jsp
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>
<h1>Validation Form</h1>
<html:form action="Hello">
Name:<html:text property="name"/><html:errors/>
<html:submit value="submit"/>
</html:form>
成功.jsp
<%=request.getAttribute("res")%>
struts-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE xml>
<struts-config>
<form-beans>
<form-bean name="HF" type="beans.FormBackup" />
</form-beans>
<action-mappings>
<action path="/Hello" name="HF" input="/index.jsp"
type="beans.FormController"></action>
<forward name="success" path="/success.jsp" redirect="true" />
</action-mappings>
<message-resources parameter="beans.Messages" />
</struts-config>
web.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"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee;http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0">
<display-name>FirstStrutsExample</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>actionservlet</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>actionservlet</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<jsp-config>
<taglib>
<taglib-uri>/tags/struts-html</taglib-uri>
<taglib-location>/WEB-INF/struts-html.tld</taglib-location>
</taglib>
</jsp-config>
</web-app>
我是 Struts 的新手,我創建了簡單的 hello 表單,在該表單中執行索引頁面,然后當我嘗試提交表單時,它顯示無法找到"success"
轉發。 我不知道我在哪里有確切的錯誤。 有人可以幫助我嗎? 當我點擊提交按鈕時,它顯示我喜歡
“org.apache.struts.action.ActionMapping findForward 警告:無法找到‘成功’轉發。”
在配置 struts-config.xml 中,您沒有將<forward>
添加到<action>
標記。
<action path="/Hello" name="HF" input="/index.jsp" type ="beans.FormController">
<forward name ="success" path ="/success.jsp"/>
</action>
sturtup 應該有 XML 解析錯誤,因為該文檔不符合struts-config.DTD 。
在 struts-config.xml 中,您應該包含一個正確的文檔類型,根據該文檔類型驗證 DTD。
<!DOCTYPE struts-config PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 1.3//EN" "struts-config_1_3.dtd">
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