Only Execute Code on Certain Requests Java
- by BillPull
I am building a little API for class and the teacher supplied us with a link to a tutorial that provided a simple webserver that implements Runnable.
I have already written some code that will parse arguments the arguments ( or at least get me the request string ) and some code that will return some simple xml.
however I think certain requests like the one for the favicon are sent I think it is messing up my code. I wrapped that in an if else but it does not seem to be working.
package server;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.util.*;
import java.io.*;
import java.net.*;
import parkinglots.*;
public class WorkerRunnable implements Runnable{
protected Socket clientSocket = null;
protected String serverText = null;
public WorkerRunnable(Socket clientSocket, String serverText) {
this.clientSocket = clientSocket;
this.serverText = serverText;
}
public Boolean authenticateAPI(String key){
//Authenticate Key against Stored Keys
//TODO: Create Stored Keys and Compare
return true;
}
public void run() {
try {
InputStream input = clientSocket.getInputStream();
OutputStream output = clientSocket.getOutputStream();
long time = System.currentTimeMillis();
//TODO: Parse args and output different formats and Authentication
//Parse URL Arguments
BufferedReader in = new BufferedReader(
new InputStreamReader(clientSocket.getInputStream(), "8859_1"));
String request = in.readLine();
//Server gets Favicon Request so skip that and goto args
System.out.println(request);
if ( request != "GET /favicon.ico HTTP/1.1" && request != "GET / HTTP/1.1" && request != null ){
String format = "", apikey ="";
System.out.println("I am Here");
String request_location = request.split(" ")[1];
String request_args = request_location.replace("/","");
request_args = request_args.replace("?","");
String[] queries = request_args.split("&");
System.out.println(queries[0]);
for ( int i = 0; i < queries.length; i++ ){
if( queries[i] == "format" ){
format = queries[i].split("=")[1];
}
else if( queries[i] == "apikey" ){
apikey = queries[i].split("=")[1];
}
}
if( apikey == "" ){
apikey = "None";
}
if( format == "" ){
format = "xml";
}
Boolean auth = authenticateAPI(apikey);
if ( auth ){
if ( format == "xml"){
// Retrieve XML Document
String xml = LotFromDB.getParkingLotXML();
output.write((xml).getBytes());
}else{
//Retrieve JSON
String json = LotFromDB.getParkingLotJSON();
output.write((json).getBytes());
}
}else{
output.write(("Access Denied - User is Not Authenticated").getBytes());
}
}else{
output.write(("Access Denied Must Pass API Key").getBytes());
}
output.close();
input.close();
System.out.println("Request processed: " + time);
} catch (IOException e) {
//report exceptions
e.printStackTrace();
}
}
}
Console output I get
I am Here
format=json
Request processed: 1333516648331
GET /favicon.ico HTTP/1.1
I am Here
favicon.ico
Request processed: 1333516648332
It always returns the XML as well.
This is my first exposure to writing a web server and dealing with networking in Java, which frustrates me a lot in general, So any suggestions here are very appreciated.
