Spring boot freemarker 配置

spring:
    datasource:
        type: com.alibaba.druid.pool.DruidDataSource
        driverClassName: com.mysql.jdbc.Driver
        url: 
        username:
        password:
    jackson:
        time-zone: GMT+8
        date-format: yyyy-MM-dd HH:mm:ss
    resources:
            static-locations: classpath:/static/,classpath:/views/
    freemarker:
      template-loader-path: classpath:/genCodeTemplateV1/
      charset: UTF-8
      content-type: text/html

   @Autowired
    private FreeMarkerConfigurer freeMarkerConfigurer;

    @Bean
    public Configuration getFreeMarkerConfiguration(){
        return freeMarkerConfigurer.getConfiguration();
    }

 private Map<String, Object> productMapperByTemplate(Map<String, Object> data) throws Exception {
        ProductCodeDTO productDTO = (ProductCodeDTO)data.get("productCodeDTO");
        Map dataOfTemplate = this.productTemplate(productDTO);
        String formatedTabName = productDTO.getDtoClassName().substring(0, productDTO.getDtoClassName().indexOf("DTO"));
        String templateMapperName = "template_Mapper.java";//模板名称
        String fileDir = productDTO.getTargetDir() + productDTO.getMapperPackageName().replaceAll("\\.", "/");
        String fileNamePath = productDTO.getTargetDir() + productDTO.getMapperPackageName().replaceAll("\\.", "/") + "/" + productDTO.getMapperClassName() + ".java";
        Template template = this.getFreeMarkerConfiguration().getTemplate(templateMapperName);//读取模板内容
        FileUtils.forceMkdir(new File(fileDir + "/"));//创建文件路径
        OutputStreamWriter out = new OutputStreamWriter(new FileOutputStream(fileNamePath), "UTF-8");
        template.process(dataOfTemplate, out); //写入文件
        out.flush();
        out.close();
        productDTO.setFormated_tab_name(formatedTabName);
        productDTO.setLower_tab_name(productDTO.getTableName().toLowerCase());
        data.put("productCodeDTO", productDTO);
        dataOfTemplate.putAll(data);
        return dataOfTemplate;
    }