java解析freemarker文件或模板内容

深藏阁楼爱情的钟 2022-03-18 08:26 520阅读 0赞

## java解析freemarker文件或模板内容 ##

freemarker文件一般是控制器返回后有freemarker控制器进行解析，在这里我们在java代码中解析freemarker文件  
[其他依赖包][Link 1]  
[网盘地址][Link 2] 提取码：i6o7

package com.my.utils;
    
    import freemarker.template.Template;
    import freemarker.template.TemplateException;
    import org.apache.commons.io.IOUtils;
    import org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer;
    
    import java.io.BufferedWriter;
    import java.io.IOException;
    import java.io.StringReader;
    import java.io.StringWriter;
    import java.util.Map;
    
    public final class FreemarkerParseUtils { 
       
       /** * 不可实例化 */
       private FreemarkerParseUtils () { 
       }
    
       /** * 把ftl文件解析成html字符串内容 * @param templatePath ftl文件路径 * @param model 模型数据 * @return 解析后的html文件内容 */
       public static String parse(String templatePath, Map<String, Object> model) { 
           StringWriter stringWriter = null;
           BufferedWriter writer = null;
           try { 
               freemarker.template.Template template = SpringUtils.getBean("freeMarkerConfigurer", FreeMarkerConfigurer.class).getConfiguration().getTemplate(templatePath);
               stringWriter = new StringWriter();
               writer = new BufferedWriter(stringWriter);
               template.process(model, writer);
               writer.flush();
               return stringWriter.toString();
           } catch (Exception e) { 
               e.printStackTrace();
           } finally { 
               IOUtils.closeQuietly(writer);
               IOUtils.closeQuietly(stringWriter);
           }
           return null;
       }
    
       /** * 解析ftl文件内容 * @param content 原ftl模板文件内容 * @param model 模板文件数据 * @return 解析后的html文件内容 */
       public static String parseFtlContent(String content, Map<String, Object> model) { 
           // 获取配置
           StringWriter out = new StringWriter();
           try { 
               new Template("template", new StringReader(content), FreemarkerUtils.getFreeMarkerConfigurer().getConfiguration()).process(model, out);
           } catch (TemplateException | IOException e) { 
               return "";
           }
           String htmlContent = out.toString();
    
           if (out != null) { 
               try { 
                   out.close();
               } catch (IOException e) { 
                   return "";
               }
           }
           return htmlContent;
       }
    }

[Link 1]: https://download.csdn.net/download/michean/10966295
[Link 2]: https://pan.baidu.com/s/1MxTtQwbmLTZ5ojk9-fg1zg