using System;using System.Web;using System.IO;using NVelocity;using NVelocity.App;using NVelocity.Context;using NVelocity.Runtime;using Commons.Collections;namespace B{ public class NVelocityHelper { private VelocityEngine velocity = null; private IContext context = null; /// /// 无参数构造函数 /// public NVelocityHelper() { ;} /// /// 构造函数 ///templatDir模板文件夹路径 /// public NVelocityHelper(string templateDir) { Init(templateDir); } /// /// 初始化NVelocity模块 /// <param name="templateDir">模版文件所在的物理文件夹</param> /// 模板文件夹路径 public void Init(string templateDir) { //创建VelocityEngine实例对象 velocity = new VelocityEngine(); //使用设置初始化VelocityEngine ExtendedProperties props = new ExtendedProperties(); props.AddProperty(RuntimeConstants.RESOURCE_LOADER, "file"); props.AddProperty(RuntimeConstants.FILE_RESOURCE_LOADER_PATH,templateDir); props.AddProperty(RuntimeConstants.INPUT_ENCODING, "utf-8"); props.AddProperty(RuntimeConstants.OUTPUT_ENCODING, "utf-8"); velocity.Init(props); //为模板变量赋值 context = new VelocityContext(); } /// 给模板变量赋值 /// 模板变量 ///模板变量值 public void Put(string key, object value) { if (context == null) { context = new VelocityContext(); context.Put(key, value); } else { context.Put(key, value); } } public IContext Context { set { context = value; } get { return context; } } public StringWriter GetResultString(string templatFileName) { //从文件中读取模板 Template template = velocity.GetTemplate(templatFileName); //合并模板 StringWriter writer = new StringWriter(); template.Merge(context, writer); return writer; }/// /// 显示结果内容 /// public void Display(string templatFileName) { StringWriter writer = GetResultString(templatFileName); //输出 HttpContext.Current.Response.Clear(); HttpContext.Current.Response.Write(writer.ToString()); HttpContext.Current.Response.Flush(); HttpContext.Current.Response.End(); } /// ///生成 .shtml 文件, 生成成功返回 true 不成功返回 false /// ///<summary> /// 生成.shtml 文件 /// </summary> /// /// <param name="fileName"> /// .shtml的文件名 /// </param> /// /// <param name="targetFolder"> /// .shtml文件的存放路径, 注意：这里需要的是服务器端的一个绝对路径,Server.MapPaht(para)方法获得，或直接给出. /// </param> /// /// <param name="templatFileName">模版文件名</param> public bool GenerateShtml(string templatFileName,string targetFolder,string fileName) { StringWriter writer = GetResultString(templatFileName); try { if (Directory.Exists(targetFolder)) { File.WriteAllText(targetFolder+"\\"+fileName, writer.ToString(), new System.Text.UTF8Encoding(false)); return true; } else { return false; } } catch { return false; } } }}
转载于:https://www.cnblogs.com/lidj/p/3210392.html
