如何在Thymeleaf中访问Map内部的List？

Question

Consider the following map,

Map<String, List<String>> map=new HashMap<>();

I would like to put values into this map using thymeleaf. Now, how to insert list items into the map in thymeleaf.

For, Map<String,String> we would write something like map['key']=val; How to do it for lists? One way, I thought was keeping the List<String> in a class. For example,

class ListWrapper
{
public List<String> list=new ArrayList<>();

// setter and getter methods
}

and then write the map as

Map<String, ListWrapper> map=new HashMap<>();

and insert like this..

map['key'].list[0]='item 1';
map['key'].list[1]='item 2';

Is there any direct way, instead of writing a class unnecessarily?

Thanks in advance.

Answer 1

You don't need to write a class - you can use Guava's ListMulitMap . Check out these examples .