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Erstellen einer Webanwendung wo der Benutzer ein Wort und ein relevantes Bild suchen kann zurückgegeben werden. Aber immer wenn die Abfrage geändert wird, ist das Bild nicht. Was geht hier vor sich?Bild wird nicht aktualisiert in JSP Java dynamisches Webprojekt
Benutzer sucht "Katze" und Bild kommt zurück. Aber bleibt so nach der ersten Abfrage. 
DefineWord.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ page import="googleAPI.*" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Define</title>
<link rel="stylesheet" type="text/css" href="css/bootstrap.css">
<link rel="stylesheet" href="css/bootstrap-lightbox.min.css">
<link rel="stylesheet" href="css/bootstrap-lightbox.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script src="js/includeNAV.js"></script>
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<style>
.fit_image img {
max-width: 100%;
max-height: 100%;
}
.fit_image {
width: 400px;
height: 200px;
}
</style>
</head>
<body>
<div id="includedNav"></div>
<div class="container">
<form id="searchForm" method="get" action="LinkServlet">
<fieldset>
<input id="s" type="text" name="query" /> <input type="submit"
value="Submit" id="submitButton" />
</fieldset>
</form>
</div>
<br />
<!-- Requests attributes from servlet -->
<div class="container">
<%-- <%=request.getAttribute("links") %> --%>
<br /> ONE LINK:
<div class="fit_image">
<img src="<%=request.getAttribute("onelink")%>"/>
</div>
</div>
<script
src="//ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script
src="//blueimp.github.io/Gallery/js/jquery.blueimp-gallery.min.js"></script>
<script src="js/bootstrap-image-gallery.min.js"></script>
</body>
</html>
LinkServlet.java
package googleAPI;
import java.io.IOException;
import java.util.ArrayList;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/LinkServlet")
public class LinkServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public LinkServlet() {
super();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.removeAttribute("onelink");
// Get query from user through http parameter
String query = request.getParameter("query");
String results = google.psuedomain(query);
// Put results string into a ArrayList so that the jsp can dynamically
// call each image
String[] urlAry = results.split("\n");
ArrayList<String> ar = new ArrayList<String>();
ar.clear();
ar.removeAll(ar);
for (int i = 0; i < urlAry.length; i++) {
ar.add(urlAry[i]);
}
// Get first element from ArrayList and set attribute
String onelink = ar.get(0);
request.setAttribute("onelink", onelink);
// Set query results to attribute so JSP can call it
request.setAttribute("links", ar);
// Forward request back to the same JSP.
RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/DefineWord.jsp");
dispatcher.forward(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
}
}
google.java
package googleAPI;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.regex.Pattern;
import java.util.HashSet;
import java.util.Set;
import java.util.regex.Matcher;
public class google {
static StringBuilder results = new StringBuilder();
static String finalResults;
public static String getFinalResults() {
return finalResults;
}
public static void setFinalResults(String finalResults) {
google.finalResults = finalResults;
}
public static String psuedomain(String qry) throws IOException {
String key = "*********private key************";
URL url = new URL("https://www.googleapis.com/customsearch/v1?key=" + key
+ "&cx=*********private key************&q=" + qry + "&alt=json");
// CONNECTION LOGIC
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setRequestProperty("Accept", "application/json");
BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream())));
String output;
while ((output = br.readLine()) != null) {
Pattern pattern = Pattern.compile("(?:(?:https?)+\\:\\/\\/+[a-zA-Z0-9\\/\\._-]{1,})+(?:(?:jpe?g|png|gif))");
Matcher matcher = pattern.matcher(output);
if (matcher.find()) {
results.append(matcher.group() + "\n");
}
}
conn.disconnect();
finalResults = removeDup();
return finalResults;
}
public static String removeDup() {
String[] tokens = results.toString().split("\n");
StringBuilder resultBuilder = new StringBuilder();
Set<String> alreadyPresent = new HashSet<String>();
boolean first = true;
for (String token : tokens) {
if (!alreadyPresent.contains(token)) {
if (first)
first = false;
else
resultBuilder.append("\n");
if (!alreadyPresent.contains(token))
resultBuilder.append(token + "\n");
}
alreadyPresent.add(token);
}
String result = resultBuilder.toString();
return result;
}
}
Irgendwelche Ideen, warum dies passieren könnte? Vielen Dank für Ihre Zeit.