如何使用 Gson 将 JSON 转换为 HashMap? [英] How can I convert JSON to a HashMap using Gson?

问题描述

我正在从以 JSON 格式返回数据的服务器请求数据.在发出请求时将 HashMap 转换为 JSON 一点也不难，但另一种方式似乎有点棘手.JSON 响应如下所示:

I'm requesting data from a server which returns data in the JSON format. Casting a HashMap into JSON when making the request wasn't hard at all but the other way seems to be a little tricky. The JSON response looks like this:

{ 
    "header" : { 
        "alerts" : [ 
            {
                "AlertID" : "2",
                "TSExpires" : null,
                "Target" : "1",
                "Text" : "woot",
                "Type" : "1"
            },
            { 
                "AlertID" : "3",
                "TSExpires" : null,
                "Target" : "1",
                "Text" : "woot",
                "Type" : "1"
            }
        ],
        "session" : "0bc8d0835f93ac3ebbf11560b2c5be9a"
    },
    "result" : "4be26bc400d3c"
}

哪种方式最容易访问这些数据?我正在使用 GSON 模块.

What way would be easiest to access this data? I'm using the GSON module.

推荐答案

给你:

import java.lang.reflect.Type;
import com.google.gson.reflect.TypeToken;

Type type = new TypeToken<Map<String, String>>(){}.getType();
Map<String, String> myMap = gson.fromJson("{'k1':'apple','k2':'orange'}", type);

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