Android JSON HttpClient 使用 HttpResponse 将数据发送到 PHP 服务器
我目前正在尝试从 Android 应用程序发送一些数据到 php 服务器(两者都由我控制)。
应用程序中的表单上收集了大量数据,这些数据被写入数据库。这一切都有效。
在我的主代码中,首先我创建一个 JSONObject(在本例中我已将其删减):
JSONObject j = new JSONObject();
j.put("engineer", "me");
j.put("date", "today");
j.put("fuel", "full");
j.put("car", "mine");
j.put("distance", "miles");
接下来我传递该对象以进行发送,并接收响应:
String url = "http://www.server.com/thisfile.php";
HttpResponse re = HTTPPoster.doPost(url, j);
String temp = EntityUtils.toString(re.getEntity());
if (temp.compareTo("SUCCESS")==0)
{
Toast.makeText(this, "Sending complete!", Toast.LENGTH_LONG).show();
}
HTTPPoster 类:
public static HttpResponse doPost(String url, JSONObject c) throws ClientProtocolException, IOException
{
HttpClient httpclient = new DefaultHttpClient();
HttpPost request = new HttpPost(url);
HttpEntity entity;
StringEntity s = new StringEntity(c.toString());
s.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
entity = s;
request.setEntity(entity);
HttpResponse response;
response = httpclient.execute(request);
return response;
}
这会得到响应,但服务器正在返回a 403 - 禁止响应。
我尝试稍微更改一下 doPost 函数(这实际上好一点,正如我所说,我有很多要发送,基本上是 3 个具有不同数据的相同表单 - 所以我创建了 3 个 JSONObject,每个表单条目一个 - 条目来自数据库而不是我正在使用的静态示例)。
首先,我稍微改变了调用:
String url = "http://www.myserver.com/ServiceMatalan.php";
Map<String, String> kvPairs = new HashMap<String, String>();
kvPairs.put("vehicle", j.toString());
// Normally I would pass two more JSONObjects.....
HttpResponse re = HTTPPoster.doPost(url, kvPairs);
String temp = EntityUtils.toString(re.getEntity());
if (temp.compareTo("SUCCESS")==0)
{
Toast.makeText(this, "Sending complete!", Toast.LENGTH_LONG).show();
}
好吧,所以对 doPost 函数的更改:
public static HttpResponse doPost(String url, Map<String, String> kvPairs) throws ClientProtocolException, IOException
{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
if (kvPairs != null && kvPairs.isEmpty() == false)
{
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(kvPairs.size());
String k, v;
Iterator<String> itKeys = kvPairs.keySet().iterator();
while (itKeys.hasNext())
{
k = itKeys.next();
v = kvPairs.get(k);
nameValuePairs.add(new BasicNameValuePair(k, v));
}
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
}
HttpResponse response;
response = httpclient.execute(httppost);
return response;
}
好吧,这将返回响应 200
int statusCode = re.getStatusLine().getStatusCode();
但是,服务器上收到的数据无法解析为 JSON 字符串。我认为它的格式很糟糕(这是我第一次使用 JSON):
如果在 php 文件中我对 $_POST['vehicle'] 进行回显,我会得到以下信息:
{\"date\":\"today\",\"engineer\":\"me\"}
谁能告诉我哪里出错了,或者是否有更好的方法来实现我想要做的事情?希望以上说得有道理!
I am currently trying to send some data from and Android application to a php server (both are controlled by me).
There is alot of data collected on a form in the app, this is written to the database. This all works.
In my main code, firstly I create a JSONObject (I have cut it down here for this example):
JSONObject j = new JSONObject();
j.put("engineer", "me");
j.put("date", "today");
j.put("fuel", "full");
j.put("car", "mine");
j.put("distance", "miles");
Next I pass the object over for sending, and receive the response:
String url = "http://www.server.com/thisfile.php";
HttpResponse re = HTTPPoster.doPost(url, j);
String temp = EntityUtils.toString(re.getEntity());
if (temp.compareTo("SUCCESS")==0)
{
Toast.makeText(this, "Sending complete!", Toast.LENGTH_LONG).show();
}
The HTTPPoster class:
public static HttpResponse doPost(String url, JSONObject c) throws ClientProtocolException, IOException
{
HttpClient httpclient = new DefaultHttpClient();
HttpPost request = new HttpPost(url);
HttpEntity entity;
StringEntity s = new StringEntity(c.toString());
s.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
entity = s;
request.setEntity(entity);
HttpResponse response;
response = httpclient.execute(request);
return response;
}
This gets a response, but the server is returning a 403 - Forbidden response.
I have tried changing the doPost function a little (this is actually a little better, as I said I have alot to send, basically 3 of the same form with different data - so I create 3 JSONObjects, one for each form entry - the entries come from the DB instead of the static example I am using).
Firstly I changed the call over a bit:
String url = "http://www.myserver.com/ServiceMatalan.php";
Map<String, String> kvPairs = new HashMap<String, String>();
kvPairs.put("vehicle", j.toString());
// Normally I would pass two more JSONObjects.....
HttpResponse re = HTTPPoster.doPost(url, kvPairs);
String temp = EntityUtils.toString(re.getEntity());
if (temp.compareTo("SUCCESS")==0)
{
Toast.makeText(this, "Sending complete!", Toast.LENGTH_LONG).show();
}
Ok so the changes to the doPost function:
public static HttpResponse doPost(String url, Map<String, String> kvPairs) throws ClientProtocolException, IOException
{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
if (kvPairs != null && kvPairs.isEmpty() == false)
{
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(kvPairs.size());
String k, v;
Iterator<String> itKeys = kvPairs.keySet().iterator();
while (itKeys.hasNext())
{
k = itKeys.next();
v = kvPairs.get(k);
nameValuePairs.add(new BasicNameValuePair(k, v));
}
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
}
HttpResponse response;
response = httpclient.execute(httppost);
return response;
}
Ok So this returns a response 200
int statusCode = re.getStatusLine().getStatusCode();
However the data received on the server cannot be parsed to a JSON string. It is badly formatted I think (this is the first time I have used JSON):
If in the php file I do an echo on $_POST['vehicle'] I get the following:
{\"date\":\"today\",\"engineer\":\"me\"}
Can anyone tell me where I am going wrong, or if there is a better way to achieve what I am trying to do? Hopefully the above makes sense!
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经过大量阅读和搜索后,我发现问题所在,我相信服务器上启用了 magic_quotes_gpc 。
因此,使用:
在上面的示例中,可以删除斜杠并允许正确解码 JSON。
仍然不确定为什么发送 StringEntity 会导致 403 错误?
After lots of reading and searching I have found the problem to be with, I beleive magic_quotes_gpc being enabled on the server.
Thus, using:
In my example above removes the slashes and allows the JSON to be decoded properly.
Still not sure why sending a StringEntity causes a 403 error?
当您尝试将参数发送到 php 脚本时,需要更改
。
末尾的问号
Change
to
Question mark at the end is necessary when you're trying to send parameters to php script.
尝试一下这个代码,它工作得很好
然后像这样调用 HttpClient 类这个 AsyncTask:
private class YourTask extends AsyncTask {
private String error_msg = "服务器错误!";
Try this code it works perfectly
then call HttpClient class this AsyncTask Like this:
private class YourTask extends AsyncTask {
private String error_msg = "Server error!";