我正在尝试在 Eclipse 上运行这个简单的示例。当我运行服务器时,它没有显示任何错误。但是在浏览器中它显示 404 错误页面未找到。我不明白错误是什么。我也使用了我的 WEB-INF/Lib 文件夹中的所有罐子。
代码片段如下:
班级问候语
package com.action;
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 com.form.HelloWorldForm;
public class HelloWorldAction extends Action{
public ActionForward execute(ActionMapping mapping,ActionForm form,
HttpServletRequest request,HttpServletResponse response) throws Exception {
HelloWorldForm helloWorldForm = (HelloWorldForm) form;
helloWorldForm.setMessage("Hello World! Struts");
return mapping.findForward("success");}
}
类 HelloWorldForm
package com.form;
import org.apache.struts.action.ActionForm;
public class HelloWorldForm extends ActionForm{
String message;
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
}
Struts-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 1.3//EN"
"http://jakarta.apache.org/struts/dtds/struts-config_1_3.dtd">
<struts-config>
<form-beans>
<form-bean name="helloWorldForm"
type="com.form.HelloWorldForm"/>
</form-beans>
<action-mappings>
<action path="/helloWorld"
type="com.action.HelloWorldAction"
name="helloWorldForm">
<forward name="success" path="/HelloWorld.jsp"/>
</action>
</action-mappings>
</struts-config>
Web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>Maven Struts Examples</display-name>
<servlet>
<servlet-name>action</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>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
HelloWorld.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@taglib uri="http://struts.apache.org/tags-bean" prefix="bean"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<h1><bean:write name="helloWorldForm" property="message" />
</h1>
</body>
</html>