【发布时间】：2011-06-17 16:55:36
【问题描述】：
我正在为 Google App Engine 上的组织开发会员注册应用程序，对于新成员，他们可以使用注册页面成为会员，Google App Engine 中有没有办法将新会员添加为 gmail联系方式？因此，每次新用户使用他的信息单击提交按钮时，都会自动生成一个新的 gmail 联系人并将其添加到我的联系人列表中 [我的 gmail 地址已在 GAE 应用程序中注册]。
这是我的一些代码尝试这样做，但它不会在每次按下提交按钮时添加新联系人：
String Add_New_Contact_Url="https://www.google.com/m8/feeds/contacts/default/full";
protected void processRequest(HttpServletRequest request,HttpServletResponse response) throws ServletException,IOException
{
request.setCharacterEncoding("UTF-8");
response.setContentType("text/html; charset=UTF-8"); // UTF-8 GB18030
PrintWriter out=response.getWriter();
String Email=request.getParameter("Email");
if (Email==null || Email.trim().length()<1)
{
StrBuf=new StringBuffer("<Html><Head><Title>Signup</Title></Head>\n<Body>\n");
StrBuf.append("<P><Br><P><Br><P>\n");
StrBuf.append("<Table Border=1 Align=Center Cellpadding=8 Cellspacing=1><Tr Bgcolor=\"#0088FF\" Colspan=2><Th><Font Color=White>Sign up</Font></Th></Tr></Table>\n<P>\n");
StrBuf.append("<Center>\n");
StrBuf.append("<Form Name=Singles_Club_Signup_Form>\n");
StrBuf.append("<Table Border=1 Cellpadding=6 Cellspacing=1>\n");
...
StrBuf.append("<Tr><Td Align=Right><B><Font Size=3 Color=#0066FF>Email</Font></B></Td><Td><Input type=text name=Email size=36 /></Td></Tr>\n");
...
StrBuf.append("</Table>\n");
StrBuf.append("<P><Br><P>\n");
StrBuf.append("<Input type=submit value=Sign_Up/>\n");
StrBuf.append("</Form>\n");
StrBuf.append("</Center>\n");
StrBuf.append("</Body>\n</Html>");
}
else
{
try
{
LinkedHashMap<String,String> Key_Value_Pairs=new LinkedHashMap<String,String>();
String A_Contact=createContact(Email);
Key_Value_Pairs.put("A",A_Contact);
getFromUrlDoPost(Add_New_Contact_Url,Key_Value_Pairs); // Create new contact in Gmail account
}
catch (Exception e) { out.println(e.toString()); }
finally { if (pm!=null) pm.close(); }
}
}
String createContact(String Email)
{
return "<atom:entry xmlns:atom='http://www.w3.org/2005/Atom' xmlns:gd='http://schemas.google.com/g/2005'>\n"+
"<atom:category scheme='http://schemas.google.com/g/2005#kind' term='http://schemas.google.com/contact/2008#contact' />\n"+
"<gd:name>\n"+
"<gd:givenName>AAA</gd:givenName>\n"+
"<gd:familyName>BBB</gd:familyName>\n"+
"<gd:fullName>AAA BBB</gd:fullName>\n"+
"</gd:name>\n"+
"<atom:content type='text'>Notes</atom:content>\n"+
"<gd:email rel='http://schemas.google.com/g/2005#work' primary='true' address='"+Email+"' displayName='E. Bennet' />\n"+
"<gd:email rel='http://schemas.google.com/g/2005#home' address='liz@example.org' />\n"+
"<gd:phoneNumber rel='http://schemas.google.com/g/2005#work' primary='true'>\n"+
"(206)555-1212\n"+
"</gd:phoneNumber>\n"+
"<gd:phoneNumber rel='http://schemas.google.com/g/2005#home'>\n"+
"(206)555-1213\n"+
"</gd:phoneNumber>\n"+
"<gd:im address='liz@gmail.com' protocol='http://schemas.google.com/g/2005#GOOGLE_TALK' primary='true' rel='http://schemas.google.com/g/2005#home' />\n"+
"<gd:structuredPostalAddress rel='http://schemas.google.com/g/2005#work' primary='true'>\n"+
"<gd:city>Mountain View</gd:city>\n"+
"<gd:street>1600 Amphitheatre Pkwy</gd:street>\n"+
"<gd:region>CA</gd:region>\n"+
"<gd:postcode>94043</gd:postcode>\n"+
"<gd:country>United States</gd:country>\n"+
"<gd:formattedAddress>\n"+
"1600 Amphitheatre Pkwy Mountain View\n"+
"</gd:formattedAddress>\n"+
"</gd:structuredPostalAddress>\n"+
"</atom:entry>";
}
StringBuffer getFromUrlDoPost(String A_Url,LinkedHashMap Key_Value_Pairs) throws MalformedURLException,IOException
{
StringBuffer Text_Out=new StringBuffer(""),Text_In=new StringBuffer("");
String data="",key,value,inputLine;
try // Sending a POST Request Using a URL
{
// Construct data -- List the entries
for (Iterator it=Key_Value_Pairs.keySet().iterator();it.hasNext();)
{
key=it.next().toString();
value=Key_Value_Pairs.get(key).toString();
if (data.length()==0) data=URLEncoder.encode(key,"UTF-8")+"="+URLEncoder.encode(value,"UTF-8");
else data+="&"+URLEncoder.encode(key,"UTF-8")+"="+URLEncoder.encode(value,"UTF-8");
}
// Send data
URLConnection conn=new URL(A_Url).openConnection();
conn.setRequestProperty("Content-Type","application/atom+xml");
conn.setDoOutput(true);
OutputStreamWriter wr=new OutputStreamWriter(conn.getOutputStream());
wr.write(data);
wr.flush();
Text_In.setLength(0);
// Get the response
BufferedReader rd=new BufferedReader(new InputStreamReader(conn.getInputStream()));
while ((inputLine=rd.readLine()) != null) Text_In.append(inputLine+"\n");
wr.close();
rd.close();
}
catch (Exception e) { }
return Text_In;
}
它也不会导致错误，我做错了什么？我怀疑这条线：
Key_Value_Pairs.put("A",A_Contact);
因为我不知道用什么来代替“A”？
【问题讨论】：