我了解将JSON字符转换为Map<String, String>
的实现方法:
public <T1, T2> HashMap<T1, T2> getMapFromJson(String json, Class<T1> keyClazz, Class<T2> valueClazz) throws TMMIDConversionException {
if (StringUtils.isEmpty(json)) {
return null;
}
try {
ObjectMapper mapper = getObjectMapper();
HashMap<T1, T2> map = mapper.readValue(json, TypeFactory.defaultInstance().constructMapType(HashMap.class, keyClazz, valueClazz));
return map;
} catch (Exception e) {
Logger.error(e.getMessage(), e.getCause());
}
}
但我无法将其扩展以转换我的JSON为Map<String, Set<String>>
。上述方法失败了,因为它会破坏Set项目并将其放入列表中。在这里需要一些帮助!谢谢。示例JSON字符串如下。此JSON必须转换为
Map<String, Set<CustomClass>>
。{
"0": [
{
"cid": 100,
"itemId": 0,
"position": 0
}
],
"1": [
{
"cid": 100,
"itemId": 1,
"position": 0
}
],
"7": [
{
"cid": 100,
"itemId": 7,
"position": -1
},
{
"cid": 140625,
"itemId": 7,
"position": 1
}
],
"8": [
{
"cid": 100,
"itemId": 8,
"position": 0
}
],
"9": [
{
"cid": 100,
"itemId": 9,
"position": 0
}
]
}