package com.jspservletcookbook;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.*;
import javax.servlet.http.*;
public class AmazonServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException {
//set the MIME type of the response, "text/html"
response.setContentType("text/html");
//use a PrintWriter send text data to the client who has requested the servlet
java.io.PrintWriter out = response.getWriter();
//Begin assembling the HTML content
out.println("<html><head>");
out.println("<title>Initiate an Amazon Book Search</title></head><body>");
out.println("<h2>Please enter your Amazon search terms</h2>");
//make sure method="POST" so that the servlet service method
//calls doPost in the response to this form submit
out.println(
"<form method=\"POST\" action =\"" + request.getContextPath() +
"/amazonservlet\" >");
out.println("<table border=\"0\"><tr><td valign=\"top\">");
out.println("Search terms: </td> <td valign=\"top\">");
out.println("<input type=\"text\" name=\"query\" size=\"15\">");
out.println("</td></tr>");
//out.println("<tr><td valign=\"top\">Restrict to Google sub-site... </td> <td valign=\"top\">");
//out.println("<select name=\"restrict\"><option selected>none</option><option>unclesam</option><option>linux</option><option>mac</option><option>bsd</option></select></td></tr>");
out.println("<tr><td valign=\"top\">");
out.println("<input type=\"submit\" value=\"Submit Info\"></td></tr>");
out.println("</table></form>");
out.println("</body></html>");
} //end doGet
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException,java.io.IOException{
String query = request.getParameter("query");
//String restrict = request.getParameter("restrict");
boolean isValid = (query == null || query.length() < 1) ? false : true;
//set the MIME type of the response, "text/html"
response.setContentType("text/html");
//use a PrintWriter send text data to the client who has requested the servlet
java.io.PrintWriter out = response.getWriter();
//Begin assembling the HTML content
out.println("<html><head>");
out.println("<title>Amazon book results</title></head><body>");
if (! isValid){
out.println("<h2>Sorry, the query parameter was either empty or null</h2>");
} else {
AmazonBean amBean = new AmazonBean();
amBean.setKeyword(query);
amBean.setType("heavy");
amBean.setMode("books");
amBean.setPage("1");
amBean.setLineSep("<br />");
out.println("<h2>Here are your search results</h2>");
try {
out.println( amBean.getSearchResults() );
} catch (Exception e){
out.println(
"The search terms either returned zero results "+
"or were invalid.");
}
}
out.println("</body></html>");
}// doPost
}//HttpServlet
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