freemarker

JAVA模板工具 支持if list等语言，维护起来更加灵活

if判空 ：数组判空 <#if userIds?? && (userIds?size > 0)> <#elseif ...条件> </#if> 基本类型判空<#if userIds?? )>

list循环：<#list userIds as userId><at id=\"${userId}\"></at></#list> 支持类型：list map

java用法：

pom引入包

    <groupId>org.springframework.boot

    <artifactId>spring-boot-starter-freemarker

</dependency>

代码：

@Resource

private FreeMarkerConfigurationFactoryfreeMarkerConfigurationFactory;



//方法体

Configuration configuration=freeMarkerConfigurationFactory.createConfiguration();

StringTemplateLoader stringTemplateLoader =new StringTemplateLoader();

stringTemplateLoader.putTemplate("numMsg",msg);

Map params =new HashMap<>();

params.put("receiveId",receiveId);//接收人飞书id

params.put("num",num);//数据

configuration.setTemplateLoader(stringTemplateLoader);

Writer writer =new StringWriter();

configuration.getTemplate("numMsg","utf-8").process(params,writer);

return writer.toString();