NVelocity中怎么实现代码生成功能
本篇文章给大家分享的是有关NVelocity中怎么实现代码生成功能,小编觉得挺实用的,因此分享给大家学习,希望大家阅读完这篇文章后可以有所收获,话不多说,跟着小编一起来看看吧。
创新互联建站专注于建邺网站建设服务及定制,我们拥有丰富的企业做网站经验。 热诚为您提供建邺营销型网站建设,建邺网站制作、建邺网页设计、建邺网站官网定制、微信平台小程序开发服务,打造建邺网络公司原创品牌,更为您提供建邺网站排名全网营销落地服务。
添加引用
初始化模板引擎及设置模板读取路径
vltEngine = new VelocityEngine(); vltEngine.SetProperty(RuntimeConstants.RESOURCE_LOADER, "file"); vltEngine.SetProperty(RuntimeConstants.FILE_RESOURCE_LOADER_PATH, CloudUtil.GetContentPath() + "/" + "Template"); vltEngine.Init();
读取模板渲染结果
VelocityContext vltContext = new VelocityContext();foreach (var item in RenderDataDic) { vltContext.Put(item.Key, item.Value); } Template vltTemplate = vltEngine.GetTemplate(TemplateFileName); System.IO.StringWriter vltWriter = new System.IO.StringWriter(); vltTemplate.Merge(vltContext, vltWriter);string CodeContent = vltWriter.GetStringBuilder().ToString();
模板语法
示例Entity模板
using FastORM.Attribute;using FastORM.Entity;using System;using System.Collections.Generic;using System.Text;namespace ${NameSpace}.Entity { [Table(Name = "${TablePhysicalNameLowCase}")]public class ${TablePhysicalName} : BaseEntity { [Key]public string RowGuid { set; get; } #foreach( $Column in $ColumnList)#if (($Column.ColumnType == 10 || $Column.ColumnType == 50) && $Column.PhysicalColumnName!="RowGuid")public string $Column.PhysicalColumnName { set; get; } #end#if ($Column.ColumnType == 20 && $Column.PhysicalColumnName!="RowGuid")public int $Column.PhysicalColumnName { set; get; } #end#if ($Column.ColumnType == 30 && $Column.PhysicalColumnName!="RowGuid")public decimal $Column.PhysicalColumnName { set; get; } #end#if ($Column.ColumnType == 40 && $Column.PhysicalColumnName!="RowGuid")public DateTime? $Column.PhysicalColumnName { set; get; } #end #end } }
常用语法
使用${xxx}占位替换具体字符串内容
使用 #foreach( $Itemin $ItemList) #end 来进行循环渲染
使用 #if #end 来进行分支判断渲染
完整工具类代码
public class TemplateUtil {private static VelocityEngine vltEngine;public static string CodeTempPath;private static void InitTemplateSetting() { CodeTempPath = AppConfigUtil.Configuration["Frame:GenerateCodeTemplatePath"]; DirectoryInfo CodePath = new DirectoryInfo(CloudUtil.GetContentStaticFilePath() + CodeTempPath);if (!CodePath.Exists) { CodePath.Create(); } vltEngine = new VelocityEngine(); vltEngine.SetProperty(RuntimeConstants.RESOURCE_LOADER, "file"); vltEngine.SetProperty(RuntimeConstants.FILE_RESOURCE_LOADER_PATH, CloudUtil.GetContentPath() + "/" + "Template"); vltEngine.Init(); }public static string GeneratemeplateFile(string FileID, string TableName, string TemplateFileName, string CodeFileName, DictionaryRenderDataDic) { InitTemplateSetting(); DirectoryInfo CodePath = new DirectoryInfo(CloudUtil.GetContentStaticFilePath() + CodeTempPath + "/" + FileID);if (!CodePath.Exists) { CodePath.Create(); } CodePath = new DirectoryInfo(CloudUtil.GetContentStaticFilePath() + CodeTempPath + "/" + FileID + "/" + TableName);if (!CodePath.Exists) { CodePath.Create(); } VelocityContext vltContext = new VelocityContext();foreach (var item in RenderDataDic) { vltContext.Put(item.Key, item.Value); } Template vltTemplate = vltEngine.GetTemplate(TemplateFileName); System.IO.StringWriter vltWriter = new System.IO.StringWriter(); vltTemplate.Merge(vltContext, vltWriter);string CodeContent = vltWriter.GetStringBuilder().ToString();string CodeFilePath = CloudUtil.GetContentStaticFilePath() + CodeTempPath + "/" + FileID + "/" + TableName + "/" + CodeFileName;//保存生成后的代码内容到文件 FileUtil.SaveStringToFile(CodeFilePath, CodeContent);return CodeFilePath; }public static string GenerateTemplateContent(string TemplateFileName, Dictionary RenderDataDic) { InitTemplateSetting(); VelocityContext vltContext = new VelocityContext();foreach (var item in RenderDataDic) { vltContext.Put(item.Key, item.Value); } Template vltTemplate = vltEngine.GetTemplate(TemplateFileName); System.IO.StringWriter vltWriter = new System.IO.StringWriter(); vltTemplate.Merge(vltContext, vltWriter);string CodeContent = vltWriter.GetStringBuilder().ToString();return CodeContent; } }
以上就是NVelocity中怎么实现代码生成功能,小编相信有部分知识点可能是我们日常工作会见到或用到的。希望你能通过这篇文章学到更多知识。更多详情敬请关注创新互联行业资讯频道。
网站题目:NVelocity中怎么实现代码生成功能
文章链接:http://scyanting.com/article/popdoh.html