Servlet +jsp+Bean 试例

最新推荐文章于 2019-08-19 20:47:00 发布

原创最新推荐文章于 2019-08-19 20:47:00 发布 · 420 阅读

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CC 4.0 BY-SA版权

文章标签：

#servlet #jsp #string #iterator #import #html

本文介绍了一个简单的JavaWeb应用示例，展示了如何通过Java类传递数据到JSP页面并显示出来。该示例创建了两个Java对象，分别设置了不同的字符串属性，并将这些对象添加到集合中。随后，该集合被发送到JSP页面，在那里迭代并显示每个对象的属性值。

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package com.test;

public class ClassMessage implements java.io.Serializable {
private String viewValueString;

public String getViewValueString() {
return viewValueString;
}

public void setViewValueString(String viewValueString) {
this.viewValueString = viewValueString;
}

}

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
  // TODO Auto-generated method stub
  Collection<ClassMessage> objCollection=new ArrayList<ClassMessage>();
  ClassMessage objClassMessage=new ClassMessage();
  ClassMessage objClassMessage2=new ClassMessage();
  objClassMessage.setViewValueString("V1");
  objCollection.add(objClassMessage);

  objClassMessage2.setViewValueString("V2");
  objCollection.add(objClassMessage2);

  request.setAttribute("message", objCollection);
  RequestDispatcher objRequestDispatcher= request.getRequestDispatcher("/Message.jsp");
  objRequestDispatcher.forward(request, response);
}

<%@page import="java.util.*,java.sql.*,java.*"%>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@page import="com.test.ClassMessage" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>

<%
Collection <ClassMessage> objCollection=(Collection <ClassMessage>) request.getAttribute("message");
Iterator objIt=objCollection.iterator();
while(objIt.hasNext())
{
ClassMessage objClassMessage=(ClassMessage)objIt.next();
out.println("<h3>" + "lidong" + objClassMessage.getViewValueString() + "</h3>");
}
%>

</body>
</html>