使用freemarker对模板进行渲染

        <!-- https://mvnrepository.com/artifact/org.freemarker/freemarker -->

        <dependency>

            <groupId>org.freemarker</groupId>

            <artifactId>freemarker</artifactId>

            <version>2.3.23</version>

        </dependency>

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileOutputStream;

import java.io.OutputStreamWriter;

import java.io.StringWriter;

import java.util.HashMap;

import java.util.Map;

import org.apache.log4j.PropertyConfigurator;

import com.winning.Application;

import com.winning.polaris.admin.service.impl.UpgradeServiceImpl;

import com.winning.polaris.comm.util.LogUtil;

import freemarker.cache.StringTemplateLoader;

import freemarker.template.Configuration;

import freemarker.template.Template;

public class FreemarkerUtils {

    private static LogUtil logger = LogUtil.getInstance(UpgradeServiceImpl.class);

    private static String defaultCharacter = "UTF-8";

    private static Configuration cfg;

    private  FreemarkerUtils() {

    }

    static {

        cfg = new Configuration(Configuration.getVersion());

        cfg.setDefaultEncoding(defaultCharacter);

        cfg.setTagSyntax(Configuration.AUTO_DETECT_TAG_SYNTAX);

    }

    /**

     * 对模板进行渲染

     * @param data 数据Map

     * @param tplStr 模板

     * @return

     */

    public static  String generateString(

            Map<String, Object> data,  String tplStr) {

        String result = null;

        String name="myStrTpl";

        try {

            StringTemplateLoader stringTemplateLoader= new StringTemplateLoader();

            stringTemplateLoader.putTemplate(name, tplStr);

            cfg.setTemplateLoader(stringTemplateLoader);

            Template template = cfg.getTemplate(name,defaultCharacter);

            StringWriter out = new StringWriter();

            template.process(data, out);

            out.flush();

            result= out.toString();

            out.close();

        } catch (Exception e) {

            e.printStackTrace();

        }

        return result;

    }

    /**

     * 将模板渲染以后保存到文件

     * @param templateFileDir 模板目录

     * @param fileName 模板文件名称

     * @param targetFilePath 渲染后文件名称

     * @param dataMap 数据

     * @return

     */

    public static boolean renderingTemplateAndGenerateFile(String templateFileDir,

            String fileName,String targetFilePath,Map<String, Object> dataMap){

            boolean flag=true;

            try {

                // 设置文件所在目录的路径

                cfg.setDirectoryForTemplateLoading(new File(templateFileDir));//模板路径

                // 获取模版

                Template template = cfg.getTemplate(fileName);

                // 设置输出文件名,和保存路径

                File outFile = new File(targetFilePath);

                // 将模板和数据模型合并生成文件 重点设置编码集

                BufferedWriter out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outFile), "UTF-8"));

                // 生成文件

                template.process(dataMap, out);

                // 关闭流

                out.flush();

                out.close();

            } catch (Exception e) {

                logger.error("生产模板文件失败！",e);

                flag=false;

            }

        return flag;

    }

    public static void main(String[] args) {

        PropertyConfigurator.configure(Application.class.getClassLoader().getResourceAsStream("config" + File.separator + "log4j.properties"));

        Map<String,Object> dataMap=new HashMap<String, Object>();

        dataMap.put("APP_HOME", "c:/test/appHome");

        //F:\freemark

        boolean renderingTemplateAndGenerateFile = renderingTemplateAndGenerateFile("F:\\freemark\\", "temp.txt",

                "F:\\freemark\\temp.bat",dataMap);

        System.out.println(renderingTemplateAndGenerateFile);

    }

}

public class FreemarkerUtilsTest extends TestCase {

	public void generateStringTest(){

		Map<String,Object> map= new HashMap<>();

		map.put("date", "2017-05-11 11:55:55");

		map.put("caseNo", "AJ00000001");

		map.put("descrip", "这是描述信息==========");

		String template="案件编号为：${caseNo!}   "

				+ " 日期为：${date!} "

				+ " 自动获取日期为：${ .now?string('yyyy年MM月dd日')}"

				+ "描述：${descrip!}";

		String generateString = FreemarkerUtils.generateString(map, template);

		System.out.println("------");

		System.out.println(generateString);

	}

}