Asp.net动态页面静态化之输出对象属性（实体关联）
模板引擎不单单可以输出单一的数据，还能直接输出对象的属性
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using NVelocity.Runtime;
using NVelocity;
using NVelocity.App;
namespace czbk
{
/// <summary>
/// Handler2 的摘要说明
/// </summary>
public class Handler2 : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/html";//plain表示普通文本格式输出 静态化应该输出html格式文本
User user = new User();
user.Username = "王大锤";
user.Userphone = "18312345678";
Role role = new Role();
role.Roleid = "1001";
role.Rolename = "超级搞笑王";
user.User_Role1 = role;//给关联对象赋值
VelocityEngine vltEngine = new VelocityEngine();
vltEngine.SetProperty(RuntimeConstants.RESOURCE_LOADER, "file");
vltEngine.SetProperty(RuntimeConstants.FILE_RESOURCE_LOADER_PATH, System.Web.Hosting.HostingEnvironment.MapPath("~/"));//模板文件所在的文件夹
vltEngine.Init();
VelocityContext vltContext = new VelocityContext();
vltContext.Put("u", user);//设置参数，在模板中可以通过$u来引用
Template vltTemplate = vltEngine.GetTemplate("Users.htm");
System.IO.StringWriter vltWriter = new System.IO.StringWriter();
vltTemplate.Merge(vltContext, vltWriter);
string html = vltWriter.GetStringBuilder().ToString();
context.Response.Write(html);
}
public bool IsReusable
{
get
{
return false;
}
}
}
public class User
{
private string username;
public string Username
{
get { return username; }
set { username = value; }
}
private string userphone;
public string Userphone
{
get { return userphone; }
set { userphone = value; }
}
private Role User_Role;//引入一个关联的类对象
public Role User_Role1
{
get { return User_Role; }
set { User_Role = value; }
}
}
public class Role
{
private string roleid;
public string Roleid
{
get { return roleid; }
set { roleid = value; }
}
private string rolename;
public string Rolename
{
get { return rolename; }
set { rolename = value; }
}
}
}
前台代码
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
</head>
<body>
<form action='Handler2.ashx'>
用户名:<input type="text" name='username' value='$u.username' /><br />
用户电话:<input type="text" name='userphone' value="$u.userphone" /><br />
用户角色名：<input type="text" name='userrolename' value="$u.User_Role1.rolename" /><br />
用户角色名2：<input type="text" name='userrolename' value="$u.User_Role1.Rolename" /><br />
<span style="color:red;">可能是html不区分大小写 所以这时调用大小写都是可以的 欢迎大家指出错误</span>
</form>
</body>
</html>
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时间： 2024-10-13 21:58:54