【发布时间】：2017-03-31 05:46:12
【问题描述】：
我是 Android 开发的新手，我正在尝试编写一个程序来解析来自网站的一些 JSON 并将其输出到 ListView 中。但是，当我运行我的程序时，我得到了错误：（有超过 7 行与此错误相同）
03-31 05:25:14.296 3196-3196/nazilli.tenispark E/FAILED: Json 解析 错误：值 {"0":"2","id":"2","1":"0","cid":"0","2":"1","uid":"1"," 3":"2017-04-01","日期":"2017-04-01","4":"20","小时":"20"} org.json.JSONObject 类型的无法转换为 JSONArray
03-31 05:25:14.297 3196-3196/nazilli.tenispark E/FAILED：Json 解析错误： 价值 {"0":"3","id":"3","1":"0","cid":"0","2":"1","uid":"1"," 3":"2017-04-08","日期":"2017-04-08","4":"20","小时":"20"} org.json.JSONObject 类型的无法转换为 JSONArray
我要解析的 JSON 是：
{"约会":[{"0":"2","id":"2","1":"0","cid":"0","2":"1", "uid":"1","3":"2017-04-01","日期":"2017-04-01","4":"20","小时":"20"},{ "0":"3","id":"3","1":"0","cid":"0","2":"1","uid":"1","3 ":"2017-04-08","date":"2017-04-08","4":"20","hour":"20"},{"0":"4","id ":"4","1":"0","cid":"0","2":"1","uid":"1","3":"2017-04-15", "日期":"2017-04-15","4":"20","小时":"20"},{"0":"5","id":"5","1": "0","cid":"0","2":"1","uid":"1","3":"2017-04-22","date":"2017-04-22 ","4":"20","小时":"20"},{"0":"6","id":"6","1":"0","cid":"0 ","2":"1","uid":"1","3":"2017-03-24","date":"2017-03-24","4":"17", "小时":"17"},{"0":"7","id":"7","1":"0","cid":"0","2":"1", "uid":"1","3":"2017-03-26","日期":"2017-03-26","4":"17","小时":"17"},{ "0":"8","id":"8","1":"1","cid":"1","2":"1","uid":"1","3 ":"2017-03-26","date":"2017-03-26","4":"16","hour":"16"},{"0":"9","id ":"9","1":"2","cid":"2","2":"1","uid":"1","3":"2017-03-26", "日期":"2017-03-26","4":"15","小时":"15"},{"0":"10","id":"10","1": "3","cid":"3","2":"1","uid":"1","3":"2017-03-26","da te":"2017-03-26","4":"13","hour":"13"}]}
这是我的 listview 自定义行 java
public class adapter_appointment extends ArrayAdapter<String> {
public adapter_appointment(Context context, String[] data){
super(context, R.layout.row_layout, data);
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
LayoutInflater inflater = LayoutInflater.from(getContext());
View customView = inflater.inflate(R.layout.row_layout, parent, false);
String all_data = getItem(position);
TextView title = (TextView) customView.findViewById(R.id.title);
//title.setText(all_data.toString());
try {
JSONArray array = new JSONArray(all_data);
JSONObject obj = array.getJSONObject(0);
Log.d("SUCCESS", "JSON Object: " + obj.toString());
if (obj.has("date") && !obj.isNull("date")) {
title.setText(obj.getString("date").toString());
Log.d("SUCCESS", "Date: " + obj.getString("date").toString());
} else {
// Do something
}
} catch (Exception e) {
Log.e("FAILED", "Json parsing error: " + e.getMessage());
}
return customView;
}
}
这是 json.java
public class my_appointments extends AppCompatActivity {
ListView lv;
InputStream is = null;
String line = null;
String result = null;
String[] data;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my_appointments);
lv=(ListView) findViewById(R.id.my_appointments);
StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder().permitNetwork().build());
//Run
getData();
ArrayAdapter adapter = new adapter_appointment(this, data);
lv.setAdapter(adapter);
}
private void getData()
{
try {
URL url = new URL("MY URL");
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setRequestMethod("GET");
is=new BufferedInputStream(con.getInputStream());
//
BufferedReader br = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
while((line=br.readLine()) != null)
{
sb.append(line + "\n");
}
is.close();
result=sb.toString();
//
JSONObject jo = new JSONObject(result);
JSONArray ja = jo.getJSONArray("appointments");
data = new String[ja.length()];
for(int i=0;i<ja.length();i++)
{
jo=ja.getJSONObject(i);
data[i]=jo.toString();
}
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
如果我不解析：
【问题讨论】：
-
因为
all_data是JSONObject而不是JSONArray。使用JSONObject jsonObject = new JSONObject(all_data);然后使用jsonObject从中获取所有 JSONArrays -
感谢您的快速回复，我该如何解决这个问题。
-
检查我的答案。如果有帮助，请点击接受