无法从android接收数据？
我的servlet没有从android客户端接收数据。日志中不显示错误或警告。我的android屏幕以html格式显示类似tomcat错误报告的内容。如何在servlet中从android检索数据。我的servlet返回null。如何检查我的servlet是否接收数据无法从android接收数据？,android,json,servlets,Android,Json,Servlets,我的servlet没有从android客户端接收数据。日志中不显示错误或警告。我的android屏幕以html格式显示类似tomcat错误报告的内容。如何在servlet中从android检索数据。我的servlet返回null。如何检查我的servlet是否接收数据 public boolean PostData() { try { String URL = "http://10.0.2.2:8080/myapp/StudentDetails"; boolean isPos
public boolean PostData()
{
try {
String URL = "http://10.0.2.2:8080/myapp/StudentDetails";
boolean isPosted;
String name = getIntent().getExtras().getString("name");
String classs = getIntent().getExtras().getString("classs");
String age = getIntent().getExtras().getString("age");
// creating default Client
HttpClient mClient = new DefaultHttpClient();
// Connect URL
StringBuilder sb=new StringBuilder(URL);
HttpPost mpost = new HttpPost(sb.toString());
List<BasicNameValuePair> nameValuepairs = new ArrayList<BasicNameValuePair>(3);
nameValuepairs.add(new BasicNameValuePair("name",name));
nameValuepairs.add(new BasicNameValuePair("classs",classs));
nameValuepairs.add(new BasicNameValuePair("age",age));
mpost.setEntity(new UrlEncodedFormEntity(nameValuepairs));
HttpResponse responce = mClient.execute(mpost);
HttpEntity entity = responce.getEntity();
BufferedReader buf = new BufferedReader(new InputStreamReader(entity.getContent()));
StringBuilder sb1 = new StringBuilder();
String line = null;
while ((line = buf.readLine()) != null) {
sb1.append(line+"\n");
}
Toast.makeText(getApplicationContext(), sb1.toString()+"",1).show();
TextView tv = (TextView) findViewById(R.id.textView1);
tv.setText(sb1.toString());
isPosted = true;
} catch (UnsupportedEncodingException e) {
Log.w(" error ", e.toString());
} catch (Exception e) {
Log.w(" error ", e.toString());
}
return false ;
}
public class ClassDetails extends HttpServlet {
/**
*
*/
private static final long serialVersionUID = 1L;
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException
{
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String title = "Database Result";
String docType = "<!doctype html public \"-//w3c//dtd html 4.0 " +"transitional//en\">\n";
out.println(docType + "<html>\n" + "<head><title>" + title + "</title> </head>\n" + "<body bgcolor=\"#f0f0f0\">\n" + "<h1 align=\"center\">" + title + " </h1>\n");
String name = request.getParameter("name");
String classs = request.getParameter("classs");
String age = request.getParameter("age");
if(sldept !=null)
{
out.println(" First: " + name + "<br>");
out.println(" Last: " + classs + "<br>");
out.println(" Last: " + age + "<br>");
}
else
{
out.println("no value");
}
}
}