本文主要是介绍自己在项目中写的简单的仿freemarker模板引擎工具,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
原文:自己在项目中写的简单的仿freemarker模板引擎工具
源代码下载地址:http://www.zuidaima.com/share/1550463381490688.htm
自己在项目中写的简单的仿freemarker模板引擎工具
1. 支持 类 freemarker 风格注释
<#-- 我是注释,你看不到我,你看不到我 *^_^* -->
2. 支持模型数据的自动填充替换, 模板中的变量名定义为 #{val}
例如: register-success-mail.tpl 恭喜: #{account} 注册成功 点击<a href="#{url}">这里</a> 激活账号
3. 暂时不支持 迭代、日期格式化 等等....
4. 祝您学习愉快 ....
大家有兴趣可以自行扩展,然后在 javaniu 上面分享
/** Copyright 2012-2013 The Haohui Network Corporation*/
package com.haohui.baidamei.client.web.json.template;import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;/*** <pre>* 模板资源读取工具* </pre>* * @project baidamei* @author cevencheng <cevencheng@gmail.com> www.zuidaima.com* @create 2012-11-24 下午9:21:51*/
public class TemplateUtils {public static URL getResource(String name) {return TemplateUtils.class.getResource(name);}/*** t1: 支持模板注释 和 jsp 代码级别注释* <#-- freemarker 注释 -->* <%!-- jsp 代码级别 注释 -->* * @param templateName* @param encoding* @return* @throws URISyntaxException */public static String processTemplateIntoString(String templateName, String encoding) {URL url = TemplateUtils.class.getResource(templateName);if (null == url) {throw new RuntimeException("模板文件[com/haohui/baidamei/client/web/json/template" + templateName + "]不存在");}if (null == encoding) {encoding = "utf-8";}encoding = encoding.trim();StringBuilder str = new StringBuilder();FileInputStream fs = null;InputStreamReader isr = null;String content = null;try {fs = new FileInputStream(new File(url.toURI()));isr = new InputStreamReader(fs, encoding);// 方法2:自己实现 bufferchar[] buffer = new char[1024];int len = 0; while ((len = isr.read(buffer)) > 0) {str.append(buffer, 0, len);}content = str.toString();String parttern = "<#--[\\w\\W\r\\n]*?-->";Pattern p1 = Pattern.compile(parttern);Matcher m1 = p1.matcher(content);content = m1.replaceAll(""); //去掉模板注释return content;} catch (Exception e) {throw new RuntimeException(e.getMessage(), e.getCause());} finally {try {isr.close();fs.close();} catch (IOException e) {throw new RuntimeException(e.getMessage(), e.getCause());}}}public static String processTemplateIntoString(String templateName, String encoding, Map<Object, Object> model) {URL url = TemplateUtils.class.getResource(templateName);if (null == url) {throw new RuntimeException("模板文件[com/zuidaima/baidamei/client/web/json/template" + templateName + "]不存在");}if (null == encoding) {encoding = "utf-8";}encoding = encoding.trim();StringBuilder str = new StringBuilder();FileInputStream fs = null;InputStreamReader isr = null;String content = null;try {fs = new FileInputStream(new File(url.toURI()));isr = new InputStreamReader(fs, encoding);// 方法2:自己实现 bufferchar[] buffer = new char[1024];int len = 0; while ((len = isr.read(buffer)) > 0) {str.append(buffer, 0, len);}content = str.toString();String parttern = "<#--[\\w\\W\r\\n]*?-->";Pattern p1 = Pattern.compile(parttern);Matcher m1 = p1.matcher(content);content = m1.replaceAll(""); //去掉模板注释// 处理模板变量 #{name} -->> 成功if (model.size() > 0) {for (Map.Entry<Object, Object> entry : model.entrySet()) {String regex = "#\\{" + entry.getKey() + "\\}";content = content.replaceAll(regex, entry.getValue().toString());}}return content;} catch (Exception e) {throw new RuntimeException(e.getMessage(), e.getCause());} finally {try {isr.close();fs.close();} catch (IOException e) {throw new RuntimeException(e.getMessage(), e.getCause());}}}public static void main(String[] args) {processTemplateIntoString("www.zuidaima.com", null);}
}
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