使用velocity

使用maven引入jar

代码语言：javascript复制

    org.apache.velocity
    velocity
    1.7


    org.apache.velocity
    velocity-tools
    2.0
    
        
            org.apache.struts
            struts-tiles
        
        
            org.apache.struts
            struts-taglib
        
        
            org.apache.struts
            struts-core
        
        
            sslext
            sslext
        
        
            oro
            oro
        
    


  
            commons-configuration
            commons-configuration
            1.10
        
        
            commons-net
            commons-net
            3.3

创建TemplateUtil工具类

代码语言：javascript复制

package com.os.core.util.web;

import org.apache.velocity.Template;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.VelocityEngine;

import java.io.*;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;


public class TemplateUtil {
    public static void main(String[] args) {
        test();
    }

    /**
     * 测试方法
     */
    public static void test() {
        try {
            String vmContent = "${dataMap.value1}中文
${dataMap.value2}";
            String vmFileUrl = "";//CommonConstants.templateFileDir;
            //生成模板文件
            String fileName = createTemplateFile(vmContent, vmFileUrl);
            //模板上下文
            Map dataMap = new HashMap();
            dataMap.put("value1", "ssssssssssssssssssssss");
            dataMap.put("value2", "中文");
            VelocityContext context = new VelocityContext();
            context.put("dataMap", dataMap);

            //获取模板生成器
            VelocityEngine engine = initEngine("");//CommonConstants.templateFileDir
            //html文件生成全路径
            File file = new File("", "UTF-8");//CommonConstants.htmlFileDir "/index.html"
            boolean createSuccess = createHtmlFile(engine, fileName, file, context);
            if (createSuccess) {
                System.out.println("文件生成完成");
            } else {
                System.out.println("文件生成失败");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 生成静态的HTML文件
     *
     * @param engine       模板生成器
     * @param tempFileName 模板文件
     * @param file         HTML生成的全路径
     * @param context      模板上下文
     * @return true生成成功 false生成失败
     * @throws Exception
     */
    public static boolean createHtmlFile(VelocityEngine engine, String tempFileName, File file, VelocityContext context) {
        try {
            if (file.getParentFile().exists() == false) {
                file.getParentFile().mkdirs();
            }
            Template temp = engine.getTemplate(tempFileName, "UTF-8");
            FileOutputStream tempFos = new FileOutputStream(file);
            BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(tempFos, "UTF-8"));
            temp.setEncoding("UTF-8");
            temp.merge(context, writer);
            writer.close();
            tempFos.close();
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }

    }

    /**
     * 初始化模板生成器
     *
     * @return VelocityEngine
     * @throws Exception
     */
    public static VelocityEngine initEngine(String genDir) throws Exception {
        VelocityEngine engine = new VelocityEngine();
        Properties properties = new Properties();
        properties.setProperty(VelocityEngine.FILE_RESOURCE_LOADER_PATH, genDir);
        properties.setProperty(VelocityEngine.INPUT_ENCODING, "UTF-8");
        properties.setProperty(VelocityEngine.OUTPUT_ENCODING, "UTF-8");
        engine.init(properties);
        return engine;
    }

    /***
     * 创建模板文件
     *
     * @param fileContext  模板内容
     * @param createDirUrl 模板保存目录
     */
    public static String createTemplateFile(String fileContext, String createDirUrl) {
        BufferedWriter bw = null;
        try {
            String fileDirUrl = createDirUrl   ".vm";
            File file = new File(fileDirUrl);
            if (file.getParentFile().exists() == false) {
                file.getParentFile().mkdirs();
            }
            bw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), "UTF-8"));
            bw.write(fileContext);
            return fileDirUrl;
        } catch (Exception e) {
            System.out.println("生成模板文件出错");
            e.printStackTrace();
            return null;
        } finally {
            if (bw != null) {
                try {
                    bw.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

    }
}

jar maven 工具类

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