freemaker使用小例子

           <dependency>
                <groupId>org.freemarker</groupId>
                <artifactId>freemarker</artifactId>
                <version>2.3.20</version>
            </dependency>

public class FreeMarkerUtil {
    static Configuration cfg;
    Template template;
    
    static {
        try {
            getConfiguration();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    
    private static void getConfiguration() throws IOException {
        cfg = new Configuration();
        // classpath下
        String path = Thread.currentThread().getContextClassLoader()
                .getResource("./").getPath();
        File templateDirFile = new File(path);
        cfg.setDirectoryForTemplateLoading(templateDirFile);
        cfg.setDefaultEncoding("UTF-8");
    }

    // 获取处理后的模板数据
    public String getProcessedTemplateData(String templateName,
            Map<String, Object> params) {
        try {
            template = cfg.getTemplate(templateName);
            StringWriter result = new StringWriter();
            template.process(params, result);
            return result.toString();

        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    // 生成文件
    public boolean generateFile(String templateName, Map<String, Object> params) {
        try {
            template = cfg.getTemplate(templateName);
            FileUtils.forceMkdir(new File("D:\\"));
            OutputStreamWriter out = new OutputStreamWriter(
                    new FileOutputStream("D:\\xxx.html"),
                    "UTF-8");
            template.process(params, out);
            out.close();
        } catch (Exception e) {
            return false;
        }
        return true;
    }
}