我一直在到处搜索这个问题，我看到的唯一答案是JSON！我觉得还有其他方法可以做到这一点。我的问题是，我可以将数据从android发布到php脚本，将数据插入我的服务器。但我想做的是从我的php中获取一些数据到android。（不使用JSON）。求你了，我还处于基础阶段。让这件事尽可能简单！
这是我的php脚本：
<?php
$con=mysqli_connect("HOST", "USER", "PASSWORD", "DB_NAME");
if (mysqli_connect_errno()){
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$tablenamep = $_POST["tablenamep"];
$stringp = $_POST["stringp"];
$val = mysqli_query($con, "DESCRIBE `$tablenamep`");
if($val == TRUE) {
echo "Table exists";
$stringp = "This ID already exists. Try again!";
} else {
echo "Table does not exist";
mysqli_query($con, "CREATE TABLE ".$tablenamep." ( name VARCHAR(30), number INT, email VARCHAR(30))");
$stringp = "Your ID is available";
}
mysqli_close($con);
?>
这就是我使用java类将数据发布到php脚本的方式。
public void CONNECT_SERVER(){
String msg = etID.getText().toString();
if (msg.length()>0){
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://myfile.php");
try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("tablenamep", msg));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
httpclient.execute(httppost);
} catch (ClientProtocolException e) {
} catch (IOException e) {
}
} else {
Toast.makeText(getBaseContext(),"All field are required",Toast.LENGTH_SHORT).show(); }
}
php脚本和android应用程序运行良好，没有错误！现在我可以将我的android应用程序中的数据添加到php脚本中。到目前为止没有问题！
但我想要的是，在执行脚本后，将$stringp变量从上面的php脚本中获取到我的android应用程序中。换句话说，我想让我的应用程序知道ID是否存在。
关于这个问题，我已经查看了很多论坛。不用JSON就可以解决这个问题。
您必须使用json或其他解析方法从服务器检索数据试试这个
contact.php
<?php
mysql_connect ("localhost","root","");
mysql_select_db("meetapp");
$output=array();
$q=mysql_query("SELECT `app_id` FROM `registration`");
while($e=mysql_fetch_assoc($q))
$output[]=$e;
print (json_encode($output));
mysql_close();
?>
在您的java代码中
try {
HttpClient httpclient2 = new DefaultHttpClient();
HttpPost httppost2 = new HttpPost("http://10.0.2.2:80/contact.php");
HttpResponse response2 = httpclient2.execute(httppost2);
HttpEntity entity2 = response2.getEntity();
is2 = entity2.getContent();
Log.e("log_tag", "connection success ");
}
catch(Exception e)
{
Log.e("log_tag", "Error in http connection "+e.toString());
}
try
{
BufferedReader reader2 = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
StringBuilder sb2 = new StringBuilder();
String line = null;
while ((line = reader2.readLine()) != null)
{
sb2.append(line + "'n");
}
is.close();
result3=sb2.toString();
}
catch(Exception e)
{
Log.e("log_tag", "Error converting result "+e.toString());
}
try
{
JSONArray jArray2 = new JSONArray(result3);
String s11;
Log.w("Lengh",""+jArray2.length());
for(int i=0;i<jArray2.length();i++){
JSONObject json_data2 = jArray2.getJSONObject(i);
s11=json_data2.getString("app_id");
}
}
catch(JSONException e)
{
Log.e("log_tag", "Error parsing data "+e.toString());
}