Java 使用名称-值对向服务器发送Json POST

我正在通过url向服务器发送Json Post请求：

请求结构：

{"requestdata":{"password":"abc","devicetype":"phone","username":"amrit@pqr.com","locale":"in"},"requestcode":10}

    // Building post parameters
    // key and value pair
    List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>();
    nameValuePair.add(new BasicNameValuePair("requestcode", "10"));
    nameValuePair.add(new BasicNameValuePair("devicetype", "phone"));
    nameValuePair.add(new BasicNameValuePair("locale", "in"));
    nameValuePair.add(new BasicNameValuePair("username", "amrit@pqr.com"));
    nameValuePair.add(new BasicNameValuePair("password", "abc"));

    RestPost post = new RestPost(loginUrl, nameValuePair);
    String Response = post.postData();
    Log.i("Response:", Response);

代码快照：

main活动：

{"requestdata":{"password":"abc","devicetype":"phone","username":"amrit@pqr.com","locale":"in"},"requestcode":10}

    // Building post parameters
    // key and value pair
    List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>();
    nameValuePair.add(new BasicNameValuePair("requestcode", "10"));
    nameValuePair.add(new BasicNameValuePair("devicetype", "phone"));
    nameValuePair.add(new BasicNameValuePair("locale", "in"));
    nameValuePair.add(new BasicNameValuePair("username", "amrit@pqr.com"));
    nameValuePair.add(new BasicNameValuePair("password", "abc"));

    RestPost post = new RestPost(loginUrl, nameValuePair);
    String Response = post.postData();
    Log.i("Response:", Response);

---

您当前正在以的形式发送JSON

{
    "requestcode": "10",
    "devicetype": "phone",
    "locale": "in",
    "username": "amrit@pqr.com",
    "password": "abc"
}

这不是服务器要求的表单。尝试创建要发送的JSON字符串。然后使用：

httppost.setEntity(new StringEntity(jsonString, "UTF8"));
httppost.setHeader("Content-type", "application/json");

---

将字符串发送到服务器。

我正在使用AndroidHttpClient发布请求

AndroidHttpClient httpClient = AndroidHttpClient.newInstance("User Agent");

URL urlObj = new URL(url);
HttpHost host = new HttpHost(urlObj.getHost(), urlObj.getPort(), urlObj.getProtocol());
AuthScope scope = new AuthScope(urlObj.getHost(), urlObj.getPort());
HttpContext credContext = new BasicHttpContext();
HttpPost httpPost = new HttpPost (url);
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairsArrayList));

// Execute post request and get http response
HttpResponse httpResponse = httpClient.execute(host, httpPost, credContext);
httpClient.close();

---

这对我来说非常有效。

你能发布完整的错误吗？你是否尝试将json对象发布到服务器，因为你现在编写它的方式会发送post值

AndroidHttpClient http = AndroidHttpClient.new Instance("hai");