--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main/java/de/mpiwg/web/jsp/AbstractJSPPage.java	Thu Apr 23 15:46:01 2015 +0200
@@ -0,0 +1,92 @@
+package de.mpiwg.web.jsp;
+
+import java.util.ArrayList;
+import java.util.Map;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+public abstract class AbstractJSPPage {
+	
+	protected HttpServletRequest request;
+	protected HttpServletResponse response;
+	
+	public HttpServletRequest getRequest() {
+		return request;
+	}
+	public void setRequest(HttpServletRequest request) {
+		this.request = request;
+	}
+	public HttpServletResponse getResponse() {
+		return response;
+	}
+	public void setResponse(HttpServletResponse response) {
+		this.response = response;
+	}
+
+	public void addMsg(String msg){
+		if(getSessionBean().getMsgList() == null){
+			getSessionBean().setMsgList(new ArrayList<String>());
+		}
+		getSessionBean().getMsgList().add(msg);
+	}
+	
+	public void init(){
+		Map<String, String[]> parameters = request.getParameterMap();
+		for(String parameter : parameters.keySet()) {
+			System.out.println(parameter + "= " + printVars(parameters.get(parameter)));
+		}
+	}
+	
+	public String getParameter(String name){
+		String[] array = request.getParameterValues(name);
+		if(array != null && array.length > 0){
+			return array[0];
+		}
+		return new String();
+	}
+	
+	public Long getLongParameter(String name){
+		String param = getParameter(name);
+		try {
+			return Long.parseLong(param);
+		} catch (Exception e) {
+		}
+		return null;
+	}
+	
+	public Integer getIntParameter(String name){
+		String param = getParameter(name);
+		try {
+			return Integer.parseInt(param);
+		} catch (Exception e) {
+		}
+		return null;
+	}
+	
+	public String printVars(String[] array){
+		String response = new String();
+		for(String s : array){
+			response += s + ", ";
+		}
+		return response;
+	}
+	
+	
+	public void internalError(Exception e){
+		addMsg("Internal Error: " + e.getMessage());
+		e.printStackTrace();
+	}
+	
+	public SessionBean getSessionBean(){
+		SessionBean bean = (SessionBean)((HttpServletRequest) request).getSession().getAttribute("sessionBean");
+		if(bean == null){
+			((HttpServletRequest) request).getSession().setAttribute("sessionBean", new SessionBean());
+		}
+		return (SessionBean)((HttpServletRequest) request).getSession().getAttribute("sessionBean");
+	}
+	
+	public ApplicationBean getApplicationBean(){
+		return ApplicationBean.getInstance();
+	}
+}