freemarker - 无法在 Freemarker 中的键值对上列出哈希

Question

下面的模板有什么问题？

package ${packageName}

public interface ${entityName} {

<#list methods as methodName, map >
public void ${methodName}(${map}) ;
</#list>

}

在 2.3.23 版本中给出:

freemarker.core.ParseException: Syntax error in template "javaclass.ftl" in line 5, column 29:
Encountered ",", but was expecting:
    ">"
    at freemarker.core.FMParser.generateParseException(FMParser.java:5251)
    at freemarker.core.FMParser.jj_consume_token(FMParser.java:5122)
    at freemarker.core.FMParser.List(FMParser.java:1431)
    at freemarker.core.FMParser.FreemarkerDirective(FMParser.java:2827)
    at freemarker.core.FMParser.MixedContent(FMParser.java:3081)
    at freemarker.core.FMParser.OptionalBlock(FMParser.java:3253)
    at freemarker.core.FMParser.Root(FMParser.java:3432)
    at freemarker.template.Template.<init>(Template.java:208)
    at freemarker.cache.TemplateCache.loadTemplate(TemplateCache.java:495)

文档 gives the following example对于哈希结构

Listing hashes is very similar, but you need to provide two variable names after the as; one for the hash key, and another for the associated value. Assuming products is { "apple": 5, "banana": 10, "kiwi": 15 }:

<#list products as name, price>
  <p>${name}: ${price}
</#list>

  <p>apple: 5
  <p>banan: 10
  <p>kiwi: 15

请注意，我的示例是在提交内容之前。

Answer 1

这是预期的，因为列表键值是在 2.3.25 中添加的。

http://freemarker.org/docs/ref_directive_list.html#ref.directive.list

... and to list the key-value pairs of a hash (since 2.3.25):

<#list hash as key, value>
  Part repeated for each key-value pair
</#list>

因此，如果可以，请升级或重写您的列表。

另见:

• Freemarker iterating over hashmap keys