Question

您好我想在服务器上发布此[{＆＃34; name＆＃34;：＆＃34; fdfdfdfdfdfdfsdfsdfsdf＆＃34;}]简单数组。我正在使用凌空图片，请求方法是POST， Dataformat是数组，

任何人都可以解释我这样做吗？

Answer 1

这对我有用 1.创建一个新的java类

    package com.hudutech.hakiki.hfarm;

import com.android.volley.NetworkResponse;
import com.android.volley.ParseError;
import com.android.volley.Response;
import com.android.volley.toolbox.HttpHeaderParser;
import com.android.volley.toolbox.JsonRequest;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.UnsupportedEncodingException;

/**
 * Created by New LAptop on 10/03/2017.
 */
public class JsonPostArrayRequest extends JsonRequest<JSONObject> {

    JSONArray params;
    public JsonPostArrayRequest(String url,JSONArray params, Response.Listener<JSONObject> listener, Response.ErrorListener errorListener) {
        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));
        }
    }
}

调用要发布数组的类

JsonPostArrayRequest req = new JsonPostArrayRequest(Paths.register_animal_url,obj, new Response.Listener<JSONObject>() {
    @Override
    public void onResponse(JSONObject response) {
        //Toast.makeText(getApplicationContext(), response.getString("message")+poultry_kind, Toast.LENGTH_LONG).show();
        dialog.hide();
       try{
        Toast.makeText(getApplicationContext(), response.getString("message"), Toast.LENGTH_LONG).show();
        VolleyLog.v("Response:%n %s", response.toString(4));
    } catch (JSONException e) {
        e.printStackTrace();
    }
    }


}, new Response.ErrorListener() {
    @Override
    public void onErrorResponse(VolleyError volleyError) {
        // Handle error
        VolleyLog.e("Error: ", volleyError.getMessage());
        String message = null;
        if (volleyError instanceof NetworkError) {
            message = "Cannot connect to Internet...Please check your connection!";
        } else if (volleyError instanceof ServerError) {
            message = "The server could not be found. Please try again after some time!!";
        } else if (volleyError instanceof AuthFailureError) {
            message = "Cannot connect to Internet...Please check your connection!";
        } else if (volleyError instanceof ParseError) {
            message = "Parsing error! Please try again after some time!!";
        } else if (volleyError instanceof NoConnectionError) {
            message = "Cannot connect to Internet...Please check your connection!";
        } else if (volleyError instanceof TimeoutError) {
            message = "Connection TimeOut! Please check your internet connection.";
        }
        Toast.makeText(getApplicationContext(), message,Toast.LENGTH_LONG).show();
        dialog.dismiss();
    }
});

MySingleton.getInstance（getApplicationContext（））addToRequeue（REQ）;

这可能是一个迟到的答案，但可能有助于某人。

如何在android中使用volley库在服务器上发布json数组对象？

1 个答案: