Examples of freemarker.template.Template

freemarker.template.Template
A core FreeMarker API that represents a compiled template. Typically, you will use a {@link Configuration} object to instantiate a template.
```
 Configuration cfg = new Configuration(); ... Template myTemplate = cfg.getTemplate("myTemplate.html"); 
```
However, you can also construct a template directly by passing in to the appropriate constructor a java.io.Reader instance that is set to read the raw template text. The compiled template is stored in an an efficient data structure for later use.
To render the template, i.e. to merge it with a data model, and thus produce "cooked" output, call the process method.
Any error messages from exceptions thrown during compilation will be included in the output stream and thrown back to the calling code. To change this behavior, you can install custom exception handlers using {@link Configurable#setTemplateExceptionHandler(TemplateExceptionHandler)} ona Configuration object (for all templates belonging to a configuration) or on a Template object (for a single template).
It's not legal to modify the values of FreeMarker settings: a) while the template is executing; b) if the template object is already accessible from multiple threads. @version $Id: Template.java,v 1.216.2.3 2006/03/10 17:49:02 revusky Exp $

 */
public class FreemarkerTemplateTests extends TestCase {


    public void testGenerate() throws Exception {
        Configuration conf = new Configuration();
        Template template = new Template("name", new StringReader("${name}"), conf);
        FreemarkerTemplate ft = new FreemarkerTemplate(template);


        Map model = new HashMap();
        model.put("name", "Daan");
        String name = ft.generate(model);

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      root.put("modelMetadata", modelMetadata);
      
      /*
       *  使用Configuration实例来加载指定模板
       */
      Template template = CONFIG.getTemplate(templateFile);
      template.setEncoding(modelMetadata.getEncoding());
      
      /*
       * 代码目录与文件
       */
      File fileDir = new File(codeFilePath);
      if(!fileDir.exists()) {
        fileDir.mkdirs();
      }
      File codeFile = new File(codeFilePath + File.separator + codeFileName);
      System.out.println("generate file " + codeFile);
      FileOutputStream fos = new FileOutputStream(codeFile);
      OutputStreamWriter out = new OutputStreamWriter(fos, modelMetadata.getEncoding());
      BufferedWriter bw = new BufferedWriter(out);
      
      /*
       * 合并处理数据与模型
       */
      template.process(root, bw);
      bw.flush();
      bw.close();
      
      return codeFile.getAbsolutePath();
    } catch (Exception e) {

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    private void executeMacro(Appendable writer, String macro) throws IOException {
        try {
            Environment environment = getEnvironment(writer);
            Reader templateReader = new StringReader(macro);
            // FIXME: I am using a Date as an hack to provide a unique name for the template...
            Template template = new Template((new java.util.Date()).toString(), templateReader, FreeMarkerWorker.getDefaultOfbizConfig());
            templateReader.close();
            environment.include(template);
        } catch (TemplateException e) {
            Debug.logError(e, "Error rendering screen macro [" + macro + "] thru ftl", module);
        } catch (IOException e) {

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        // check for a cached template
        if (cache) {
            String disableCache = UtilProperties.getPropertyValue("content", "disable.ftl.template.cache");
            if (disableCache == null || !disableCache.equalsIgnoreCase("true")) {
                try {
                    Template cachedTemplate = FreeMarkerWorker.getTemplate("DataResource:" + dataResourceId);
                    if (cachedTemplate != null) {
                        String subContentId = (String) templateContext.get("subContentId");
                        if (UtilValidate.isNotEmpty(subContentId)) {
                            templateContext.put("contentId", subContentId);
                            templateContext.put("subContentId", null);

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    private void executeMacro(Appendable writer, String macro) throws IOException {
        try {
            Reader templateReader = new StringReader(macro);
            // FIXME: I am using a Date as an hack to provide a unique name for the template...
            Template template = new Template((new java.util.Date()).toString(), templateReader, FreeMarkerWorker.getDefaultOfbizConfig());
            templateReader.close();
            if (writer != null) {
                Map<String, Object> input = UtilMisc.toMap("key", null);
                Environment tmpEnvironment = FreeMarkerWorker.renderTemplate(this.macroLibrary, input, writer);
                tmpEnvironment.include(template);

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                if (insertWidgetBoundaryComments) {
                    writer.append(HtmlWidgetRenderer.formatBoundaryComment("Begin", "Template", location));
                }


                //FreeMarkerWorker.renderTemplateAtLocation(location, context, writer);
                Template template = null;
                if (location.endsWith(".fo.ftl")) { // FOP can't render correctly escaped characters
                    template = FreeMarkerWorker.getTemplate(location);
                } else {
                    template = FreeMarkerWorker.getTemplate(location, specialTemplateCache, specialConfig);
                }

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        templateContext.put("additionalFields", passThru);
        templateContext.put("defaultValues", defaultValues);
        templateContext.put("delegator", this.delegator);
        templateContext.put("locale", Locale.getDefault());


        Template template = this.getTemplate(templateUrl);
        try {
            FreeMarkerWorker.renderTemplate(template, templateContext, writer);
        } catch (TemplateException e) {
            Debug.logError(e, "Error rendering Survey with template at [" + templateUrl.toExternalForm() + "]", module);
        } catch (IOException e) {

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    // returns the FTL Template object
    // Note: the template will not be cached
    protected Template getTemplate(URL templateUrl) {
        Configuration config = FreeMarkerWorker.getDefaultOfbizConfig();


        Template template = null;
        try {
            InputStream templateStream = templateUrl.openStream();
            InputStreamReader templateReader = new InputStreamReader(templateStream);
            template = new Template(templateUrl.toExternalForm(), templateReader, config);
        } catch (IOException e) {
            Debug.logError(e, "Unable to get template from URL :" + templateUrl.toExternalForm(), module);
        }
        return template;
    }

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        NodeModel nodeModel = NodeModel.wrap(domNode);
        Map<String, Object> ctx = FastMap.newInstance();
        ctx.put("doc", nodeModel);
        ctx.put("entityName", entityName);
        StringWriter outWriter = new StringWriter();
        Template template = getDocTemplate(templatePath);
        template.process(ctx, outWriter);
        outWriter.close();
        result = outWriter.toString();
        return result;
    }

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        result = outWriter.toString();
        return result;
    }


    public static Template getDocTemplate(String fileUrl)  throws FileNotFoundException, IOException, TemplateException, URISyntaxException {
        Template template = null;
        URL screenFileUrl = FlexibleLocation.resolveLocation(fileUrl, null);
        String urlStr = screenFileUrl.toString();
        URI uri = new URI(urlStr);
        File f = new File(uri);
        FileReader templateReader = new FileReader(f);
        Configuration conf = makeDefaultOfbizConfig();
        template = new Template("FMImportFilter", templateReader, conf);
        return template;
    }

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