AjaxZipCodesServletpublic class AjaxZipCodesServlet extends HttpServlet
| Fields Summary |
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| private static final long | serialVersionUID |
| Methods Summary |
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| public void | doGet(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse res)
String responseString = null;
String zipCode = req.getParameter("zip");
if (zipCode != null)
{
HashMap location = getCityState(zipCode);
responseString = JSONUtil.buildJSON(location, "location");
}
if (responseString != null)
{
res.setContentType("text/xml");
res.setHeader("Cache-Control", "no-cache");
res.getWriter().write(responseString);
} else
{
// If key comes back as a null, return a question mark.
res.setContentType("text/xml");
res.setHeader("Cache-Control", "no-cache");
res.getWriter().write("?");
}
| | private java.util.HashMap | getCityState(java.lang.String zipCode)
Connection con = DatabaseConnector.getConnection();
HashMap cityStateMap = new HashMap();
cityStateMap.put("zip", zipCode);
String queryString = "";
try
{
queryString = "SELECT CITY, STATE FROM ZIPCODES where ZIPCODE="
+ zipCode + ";";
Statement select = con.createStatement();
ResultSet result = select
.executeQuery(queryString);
while (result.next())
{ // process results one row at a time
String city;
String state;
city = result.getString("CITY");
if (result.wasNull())
{
city = "";
}
cityStateMap.put("city", city);
state = result.getString("state");
if (result.wasNull())
{
state = "";
}
cityStateMap.put("state", state);
}
} catch (Exception e)
{
System.out.println("exception caught getting city/state:"+queryString+" "+e.getMessage());
} finally
{
if (con != null)
{
try
{
con.close();
} catch (SQLException e) {
}
}
}
return cityStateMap;
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