我試圖用POST方法如何使用android通過Http post方法發送數據到服務器?
服務器從Android手機發送數據到我的服務器:寫在JSP 數據庫:JDO
爲HTTP POST,JSP文件和Java代碼的代碼所示
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button sig = (Button)findViewById(R.id.button1);
sig.setOnClickListener(this);
tv = (TextView)findViewById(R.id.textView1);
}
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://egencies.appspot.com");
try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(4);
nameValuePairs.add(new BasicNameValuePair("Rid", "00-22-68-E8-EC-F1"));
nameValuePairs.add(new BasicNameValuePair("location", "bangalore"));
nameValuePairs.add(new BasicNameValuePair("content", "hello frm android"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
tv.setText(response.toString());
} catch (ClientProtocolException e) {
} catch (IOException e) {
}
JSP文件表單標籤:對JDO
<form action="/sign" method="get">
<div><input type="text" name="Rid" /></div>
<div><input type="text" name="location" /></div>
<div><textarea name="content" rows="3" cols="60"></textarea></div>
<div><input type="submit" value="Post Greeting" /></div>
<input type="hidden" name="guestbookName" value="<%= guestbookName %>"/>
</form>
java代碼:
String guestbookName = req.getParameter("guestbookName");
Key guestbookKey = KeyFactory.createKey("Guestbook", guestbookName);
String content = req.getParameter("content");
String Rid = req.getParameter("Rid");
String location = req.getParameter("location");
Date date = new Date();
Entity greeting = new Entity("Greeting", guestbookKey);
greeting.setProperty("user", user);
greeting.setProperty("date", date);
greeting.setProperty("content", content);
greeting.setProperty("Rid", Rid);
greeting.setProperty("location", location);
DatastoreService datastore =
DatastoreServiceFactory.getDatastoreService();
datastore.put(greeting);
resp.sendRedirect("/guestbook.jsp?guestbookName="
+ guestbookName);"
當我把它我收到味精說[email protected] 但沒有得到被存儲在數據庫中。 任何人都可以幫助我嗎?
請向我解釋JDO在這篇文章中的位置? DatastoreService和它的工廠不是JDO,並且估計GAE – DataNucleus 2012-03-14 14:32:59
你正在使用數據存儲和presistancemanager,它的工作原理是JDO嗎?或者我錯了? – Rahul 2012-03-14 15:48:04
PersistenceManager在哪裏?你在你的代碼中使用DatastoreService.put ...這不是JDO。 – DataNucleus 2012-03-14 15:55:13