服務端php程式碼可以從這裡下載：https://github.com/lornajane/PHP-Web-Services

1.使用volley實現：

request要用JsonObjectRequest，這個request在url後面帶有一個JSONObject型別的引數

如果服務端有檢測http頭的請求資料型別和接受資料型別（比如有的服務端會根據http頭中的Accept欄位標示的型別，返回json，xml或其他資料型別，也會根據Content-type欄位的標示，按json或form型別解析請求引數），還需要在getHeaders回撥中設定頭部引數，如果服務端不檢測，可以不設定：

headers.put("Accept"
 
, "application/json");//表示接受json型別的響應
headers.put("Content-Type", "application/json; charset=UTF-8");//表示傳遞給伺服器的引數是json型別

String strUrl = "http://10.2.152.133/test/rest/rest.php/items";
try {
    JSONObject jsonBody = new JSONObject("{\"name\":\"Brett\",\"link\":\"haha\"}");
JsonObjectRequest request = new JsonObjectRequest(Request.Method.POST
 
,
strUrl, jsonBody, new Response.Listener<JSONObject>() {
        @Override
public void onResponse(JSONObject response) {
            Log.d("qf", response.toString());
}
    },
            new Response.ErrorListener() {
                @Override
public void onErrorResponse(VolleyError error) {
                    Log.d
 
("qf", error.getMessage());
}
            }

    ) {
        @Override
public Map<String, String> getHeaders() {
            HashMap<String, String> headers = new HashMap<String, String>();
headers.put("Accept", "application/json");
headers.put("Content-Type", "application/json; charset=UTF-8");
            return headers;
}
    };
MyApp.mRequestQueue.add(request);
} catch (Exception e) {
    e.printStackTrace();
}

2.使用httputils實現：

content-type設定也要根據情況需要，同volley一樣

普通的表單請求是addQueryStringParameter(get)或addBodyParameter(post)，json請求是setBodyEntity

protected void postJsonByXutils() {
    String strUrl = "http://10.2.152.133/test/rest/rest.php/items";
RequestParams requestParams = new RequestParams();
requestParams.addHeader("Content-Type", "applicasettion/json");
JSONObject json = new JSONObject();
    try {
        json.put("name", "zy");
json.put("link", "zy2");
} catch (JSONException e) {
        e.printStackTrace();
}


    requestParams.setBodyEntity(new StringEntity(json.toString(), "utf-8"));
MyApp.mHttpUtils.send(HttpRequest.HttpMethod.POST,
strUrl,requestParams,new RequestCallBack<String>() {
                @Override
public void onSuccess(ResponseInfo<String> responseInfo) {
                    String strResult = responseInfo.result;
Log.d("qf", strResult);
}

                @Override
public void onFailure(HttpException error, String msg) {
                    Log.d("qf", msg);
}
            });
}

3.使用httpurlconnection：

    protected void postJsonByHttpURLConnection() {
        HttpURLConnection httpcon;
String url = "http://10.2.152.133/test/rest/rest.php/items";
String data = "{\"name\":\"Brett2\",\"link\":\"haha2\"}";
String result = null;
        try {
//Connect
httpcon = (HttpURLConnection) ((new URL(url).openConnection()));
httpcon.setDoOutput(true);
httpcon.setRequestProperty("Content-Type", "application/json");
httpcon.setRequestProperty("Accept", "application/json");
httpcon.setRequestMethod("POST");
httpcon.connect();
//Write
OutputStream os = httpcon.getOutputStream();
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));
writer.write(data);
writer.close();
os.close();
//Read
BufferedReader br = new BufferedReader(new InputStreamReader(httpcon.getInputStream(), "UTF-8"));
String line = null;
StringBuilder sb = new StringBuilder();
            while ((line = br.readLine()) != null) {
                sb.append(line);
}

            br.close();
result = sb.toString();
} catch (UnsupportedEncodingException e) {
            e.printStackTrace();
} catch (IOException e) {
            e.printStackTrace();
}

    }