java - Cannot cast com.google.gson.JsonArray to com.google.gson.JsonObject 的解决方案是什么

Question

我的 Json 数组看起来像这样

 [
   {
      "geoRegion":"101",
      "companyName":"101",
      "department":"101",
      "industry":"101",
      "sector":"101",
      "formName":"101",
      "formType":true,
      "fields":[
         {
            "labelId":"102",
            "bizJust":"101"
         },
         {
            "labelId":"103",
            "bizJust":"101"
         },
         {
            "labelId":"104",
            "bizJust":"101"
         },
         {
            "labelId":"129",
            "bizJust":"102"
         },
         {
            "labelId":"128",
            "bizJust":"102"
         },
         {
            "labelId":"144",
            "bizJust":"102"
         },
         {
            "labelId":"143",
            "bizJust":"102"
         }
      ]
   }
]

我的代码如下:

    public Map<String,String> createTransaction(String lang) throws Exception {

            Gson gson =new Gson();
            JsonObject jsonObj=gson.fromJson(lang, JsonObject.class);//Exception thrown at this line
}

Answer 1

尝试将所有内容放入 JSON 数组而不是 JSON 对象。

更改您的代码

JsonObject jsonObj=gson.fromJson(lang, JsonObject.class);

到:

JsonArray array = gson.fromJson(lang, JsonArray.class);