尝试后JSONArray与凌空

Question

我像一个jsonarray：

[{ 
    "color": -1, 
    "fill": false, 
    "id": 1, 
    "radius": 154.613, 
    "shapeText": "", 
    "shapeType": "circle", 
    "x1": 141.172, 
    "x2": 0, 
    "y1": 231.188, 
    "y2": 0 
}, { 
    "color": -4569601, 
    "fill": false, 
    "id": 2, 
    "radius": 0, 
    "shapeText": "", 
    "shapeType": "rectangle", 
    "x1": 512.656, 
    "x2": 606.781, 
    "y1": 305.25, 
    "y2": 413.502 
}] 

，我尝试做POST到服务器，但我失败：[ 我已经得到jsonarray FRM的服务器，我也做了POST但对于jsonobject到服务器，但我不能让它POST Jsonarray：[，任何人都知道如何做到这一点？

public class JSONPostArrayRequest extends JsonRequest<JSONObject> { 
JSONArray params; 
public JSONPostArrayRequest(String url, Response.Listener<JSONObject> listener, Response.ErrorListener errorListener, JSONArray params) { 
    super(Method.POST, url, null, listener, errorListener); 
    this.params=params; 
} 

@Override 
public byte[] getBody() { 
    if (this.params != null && this.params.length() > 0) { 
     return encodeParameters(this.params, getParamsEncoding()); 
    } 
    return null; 

} 

private byte[] encodeParameters(JSONArray params, String paramsEncoding) { 
    try { 
     return params.toString().getBytes(paramsEncoding); 
    } catch (UnsupportedEncodingException uee) { 
     throw new RuntimeException("Encoding not supported: " + paramsEncoding, uee); 
    } 
} 

@Override 
protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) { 
    try { 
     String jsonString = 
       new String(response.data, HttpHeaderParser.parseCharset(response.headers)); 
     return Response.success(new JSONObject(jsonString), 
       HttpHeaderParser.parseCacheHeaders(response)); 
    } catch (UnsupportedEncodingException e) { 
     return Response.error(new ParseError(e)); 
    } catch (JSONException je) { 
     return Response.error(new ParseError(je)); 
    } 
} 

}

和我的要求，此代码完成的：

public void updateDraw(ArrayList<Shape> shapes) { 
    JSONArray jsonArrayShapes = new JSONArray(); 
    Log.d("START OF JSON ARRAY ", shapes.toString()); 
    for (Shape shape : shapes) { 
     try { 
      JSONObject jsonObjectShape = new JSONObject(); 
      jsonObjectShape.put("color", String.valueOf(shape.getColor())); 
      jsonObjectShape.put("fill", String.valueOf(shape.isFill())); 
      jsonObjectShape.put("radius", String.valueOf(shape.getRadius())); 
      jsonObjectShape.put("shapeText", String.valueOf(shape.getShapeText())); 
      jsonObjectShape.put("shapeType", String.valueOf(shape.getShapeType())); 
      jsonObjectShape.put("x1", String.valueOf(shape.getX1())); 
      jsonObjectShape.put("x2", String.valueOf(shape.getX2())); 
      jsonObjectShape.put("y1", String.valueOf(shape.getY1())); 
      jsonObjectShape.put("y2", String.valueOf(shape.getY2())); 
      jsonObjectShape.put("id", String.valueOf(shape.getId())); 
      jsonArrayShapes.put(jsonObjectShape); 
     } catch (JSONException e) { 
      e.printStackTrace(); 
     } 
     Log.d("JSONARRAY = ", jsonArrayShapes.toString()); 
    } 
    String shapeUrl = Main.GROUPS_URL + "/" + id + "/shape"; 
    Log.d("URL = ", shapeUrl); 
    JSONPostArrayRequest jsonPostArrayRequest = new JSONPostArrayRequest(shapeUrl, 
      new Response.Listener<JSONObject>() { 
       @Override 
       public void onResponse(JSONObject response) { 

       } 
      }, 
      new Response.ErrorListener() { 
       @Override 
       public void onErrorResponse(VolleyError error) { 
        Log.d("onErrorResponse ", error.toString()); 
       } 
      }, jsonArrayShapes); 
    requestQueue.add(jsonPostArrayRequest); 
} 

Answer 1

你是不是通过你的JSONArray到请求。

super(Method.POST, url, null, listener, errorListener); 

即null参数，按照文档

甲JSONArray到与请求张贴。空是允许的，并且表示没有参数将随请求一起发布。

因此，我不明白为什么你需要延长JsonRequest，或者特别是为什么你和<JSONObject>键入它。

JsonArrayRequest类已经存在，您只需要将JSONArray对象作为第三个参数。