List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
Map<String, Object> map = new HashMap<String, Object>();
map.put("abc", "123456");
map.put("def", "hmm");
list.add(map);
JSONObject json = new JSONObject(list);
try {
System.err.println(json.toString(2));
} catch (JSONException e) {
e.printStackTrace();
}
这段代码有什么问题?
输出是:
{"empty": false}
最佳答案
public String listmap_to_json_string(List<Map<String, Object>> list)
{
JSONArray json_arr=new JSONArray();
for (Map<String, Object> map : list) {
JSONObject json_obj=new JSONObject();
for (Map.Entry<String, Object> entry : map.entrySet()) {
String key = entry.getKey();
Object value = entry.getValue();
try {
json_obj.put(key,value);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
json_arr.put(json_obj);
}
return json_arr.toString();
}
好吧,试试这个~这对我有用:D
关于java - List<Map<String,Object>> 到 org.json.JSONObject?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/512692/