java - 如何在java中使用StrSubstitutor进行嵌套Map

Question

    Map<String, Object> baseMap = new HashMap<String, Object>();

    baseMap.put("Name", "Raja");

    Map<String, Object> address = new HashMap<String, Object>();
    address.put("Street", "RAMA");

    baseMap.put("Address", address);

    StrSubstitutor strsub = new StrSubstitutor(baseMap);

    String str = "This is ${Name} from ${Address.Street}";

    System.out.println(strsub.replace(str));

输出为:

我是来自 ${Address.Street} 的 Raja

我需要的是:

这是 RAMA 的 Raja

我怎样才能得到这个？

Answer 1

您可能需要另一个 StrSubstitutor 实例来替换地址:

StrSubstitutor strsub = new StrSubstitutor(baseMap);
StrSubstitutor baseSub = new StrSubstitutor(address);

String str = "This is ${Name} from ${Address.Street}";

System.out.println(baseSub.replace(strsub.replace(str)));

但我相信更好的解决方案是使用 sinlge baseMap:

Map<String, Object> baseMap = new HashMap<String, Object>();

baseMap.put("Name", "Raja");
baseMap.put("Street", "RAMA");

StrSubstitutor strsub = new StrSubstitutor(baseMap);

String str = "This is ${Name} from ${Address.Street}";

System.out.println(strsub.replace(str));