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package org.javaee7.jaxrs.resource.validation;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.Entity;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.MultivaluedHashMap;
import javax.ws.rs.core.Response;
/**
* @author Arun Gupta
*/
@WebServlet(urlPatterns = {"/TestServlet"})
public class TestServlet extends HttpServlet {
/**
* Processes requests for both HTTP <code>GET</code> and <code>POST</code>
* methods.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head>");
out.println("<title>Request Binding</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Resource Validation in JAX-RS</h1>");
Client client = ClientBuilder.newClient();
List<WebTarget> targets = new ArrayList<>();
for (int i = 0; i < 3; i++) {
targets.add(client
.target("http://"
+ request.getServerName()
+ ":"
+ request.getServerPort()
+ request.getContextPath()
+ "/webresources/names" + (i + 1)));
}
for (WebTarget target : targets) {
out.println("<h2>Using target: " + target.getUri() + "</h2>");
MultivaluedHashMap<String, String> map = new MultivaluedHashMap<>();
out.print("<br><br>POSTing with valid data ...<br>");
map.add("firstName", "Sheldon");
map.add("lastName", "Cooper");
map.add("email", "random@example.com");
Response r = target.request().post(Entity.form(map));
printResponseStatus(out, r, 200);
out.println();
out.print("<br><br>POSTing with invalid (null) \"firstName\" ...<br>");
map.putSingle("firstName", null);
r = target.request().post(Entity.form(map));
printResponseStatus(out, r, 200);
out.println();
out.print("<br><br>POSTing with invalid (null) \"lastName\" ...<br>");
map.putSingle("firstName", "Sheldon");
map.putSingle("lastName", null);
r = target.request().post(Entity.form(map));
printResponseStatus(out, r, 400);
out.print("<br><br>POSTing with invalid (missing @) email \"email\" ...<br>");
map.putSingle("lastName", "Cooper");
map.putSingle("email", "randomexample.com");
r = target.request().post(Entity.form(map));
printResponseStatus(out, r, 400);
out.print("<br><br>POSTing with invalid (missing .com) email \"email\" ...<br>");
map.putSingle("email", "random@examplecom");
r = target.request().post(Entity.form(map));
printResponseStatus(out, r, 400);
}
WebTarget target = client
.target("http://"
+ request.getServerName()
+ ":"
+ request.getServerPort()
+ request.getContextPath()
+ "/webresources/nameadd");
out.println("<h2>Using target: " + target.getUri() + "</h2>");
out.print("<br><br>POSTing using @Valid (all vaild data) ...<br>");
Response r = target
.request()
.post(Entity.json(new Name("Sheldon", "Cooper", "sheldon@cooper.com")));
printResponseStatus(out, r, 200);
out.print("<br><br>POSTing using @Valid, with invalid (null) \"firstName\" ...<br>");
r = target
.request()
.post(Entity.json(new Name(null, "Cooper", "sheldon@cooper.com")));
printResponseStatus(out, r, 400);
out.print("<br><br>POSTing using @Valid, with invalid (null) \"lastName\" ...<br>");
r = target
.request()
.post(Entity.json(new Name("Sheldon", null, "sheldon@cooper.com")));
printResponseStatus(out, r, 400);
out.print("<br><br>POSTing using @Valid, with invalid (missing @) email \"email\" ...<br>");
r = target
.request()
.post(Entity.json(new Name("Sheldon", "Cooper", "sheldoncooper.com")));
printResponseStatus(out, r, 400);
out.println("<br>... done.<br>");
out.println("</body>");
out.println("</html>");
}
private void printResponseStatus(PrintWriter out, Response r, int expected) {
out.println("Received status code: " + r.getStatus() + ", reason: " + r.getStatusInfo().getReasonPhrase());
out.println("<br>Received " + expected + " status code ?");
}
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/**
* Handles the HTTP <code>GET</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Handles the HTTP <code>POST</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Returns a short description of the servlet.
*
* @return a String containing servlet description
*/
@Override
public String getServletInfo() {
return "Short description";
}// </editor-fold>
}