Sending an Array to a Servlet

[Gayathri Neti]

Hi,
I have a standalone client which invokes a Servlet.
I want to send an INTEGER ARRAY as a parameter to the Servlet. Can I do that?
If so, can anybody show me how??
Thanks

[Maulin Vasavada]

hey
Try using streams. either ByteArrayOutput or ObjectOutput ....
From client I guess you are making URLConnection to the servlet. So, once you have the URLConnection object do connection.writeObject(); and on the servlet side do request.readObject(); look on google for this kind of URLConnection examples..
Regards
Maulin

[Gayathri Neti]

If I were passing the INTEGER ARRAY alone that might have worked fine.
I am passing 4 parameters. One of them is an INTEGER ARRAY.
Here is the code that I have:

private String getValuePairString(String name, String value, boolean addAmpersand) 
{
StringBuffer valuePair = new StringBuffer();
if(addAmpersand) 
valuePair.append(name).append("=").append(value).append("&");
else
valuePair.append(name).append("=").append(value);
return valuePair.toString();
}
private String getValuePairStringForArray(String name, Array reportNums[], boolean  addAmpersand) 
{
System.out.println("You have invoked method with Array Object in it..");
StringBuffer valuePair = new StringBuffer();
if(addAmpersand) 
valuePair.append(name).append("=").append(value).append("&");
else
valuePair.append(name).append("=").append(value);
return valuePair.toString();
}
public String sendRequest(String beginDate, String endDate, String custType, int reportNumbers[])
{
try {
StringBufferparameterStringBuffer = new StringBuffer();
parameterStringBuffer.append(getValuePairString("beginDate", beginDate, true)).
append(getValuePairString("endDate", endDate, true)).append(getValuePairString("custType", custType, true));

parameterStringBuffer.append(getValuePairStringForArray("reportNumbers", reportNumbers[], false));

URL url = new URL(SERVER_URL + SERVLET_URL);
URLConnection conn = url.openConnection();
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setRequestProperty(_TYPE, _ENCODING);
BufferedWriter out = new BufferedWriter( new OutputStreamWriter(conn.getOutputStream()));
out.write(parameterStringBuffer.toString());
parameterStringBuffer.toString();
out.flush();
out.close();
BufferedReader in = new BufferedReader( new InputStreamReader(conn.getInputStream()));
String responseLine = in.readLine();
StringBuffer response = new StringBuffer(responseLine);
while (responseLine != null ) {
response.append(responseLine);
responseLine = in.readLine();
}
in.close();
return response.toString();
}
catch (MalformedURLException me)
{
System.out.println("Error occured while processing the URL connection");
me.printStackTrace();
return "MalformedURLException - ERROR";
}
catch (IOException ioe)
{
System.out.println("Error occured while processing the URL connection");
ioe.printStackTrace();
return "IOException - ERROR";
}
}   

[William Brogden]

Like Maulin said, you could do this with object serialization. Look at the API for java.io.ObjectOutputStream and ObjectInputStream. Arrays of primitives and Strings are automatically Serializable as are Collections.
Bill