将HashMaps的数组列表转换为Json字符串(GSON)

dependencies {
    implementation 'com.google.code.gson:gson:2.8.8'
}

import com.google.gson.Gson;

// 创建一个包含HashMaps的数组列表
List<Map<String, Object>> list = new ArrayList<>();

// 添加HashMaps到数组列表中
Map<String, Object> map1 = new HashMap<>();
map1.put("key1", "value1");
map1.put("key2", "value2");
list.add(map1);

Map<String, Object> map2 = new HashMap<>();
map2.put("key3", "value3");
map2.put("key4", "value4");
list.add(map2);

// 使用GSON将数组列表转换为Json字符串
Gson gson = new Gson();
String jsonString = gson.toJson(list);

System.out.println(jsonString);

[
  {
    "key1": "value1",
    "key2": "value2"
  },
  {
    "key3": "value3",
    "key4": "value4"
  }
]