protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
Courses course = JSON.getObjectMapper().readValue(req.getReader(), Courses.class);
// Use a GetUser controller to find the item in the database
AddingANewCourse controller = new AddingANewCourse();
controller.addCourse(course);
// Set status code and content type
resp.setStatus(HttpServletResponse.SC_OK);
resp.setContentType("application/json");
// writing the operation out.
JSON.getObjectMapper().writeValue(resp.getWriter(), course);
}
protected void doDelete(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
String pathInfo = req.getPathInfo();
if (pathInfo == null || pathInfo.equals("") || pathInfo.equals("/")) {
// Set status code and content type
resp.setStatus(HttpServletResponse.SC_NOT_FOUND);
resp.setContentType("application/json");
resp.getWriter().write("we delete nothing");
return;
}
// Get the item name
if (pathInfo.startsWith("/")) {
pathInfo = pathInfo.substring(1);
}
int courseId = Integer.parseInt(pathInfo);
RemovingACourse deleteUser = new RemovingACourse();
deleteUser.removingACourse(courseId);
// send response
resp.setStatus(HttpServletResponse.SC_OK);
resp.setContentType("application/json");
GetCourseById controller = new GetCourseById();
JSON.getObjectMapper().writeValue(resp.getWriter(), controller.getCourse(courseId));
}
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
String pathInfo = req.getPathInfo();
if (pathInfo == null || pathInfo.equals("") || pathInfo.equals("/")) {
getAllCourses gt = new getAllCourses();
List<Courses> cs = gt.getAllcourses();
// Set status code and content type
resp.setStatus(HttpServletResponse.SC_OK);
resp.setContentType("application/json");
// Return the item in JSON format
JSON.getObjectMapper().writeValue(resp.getWriter(), cs);
return;
}
// Get the item name
if (pathInfo.startsWith("/")) {
pathInfo = pathInfo.substring(1);
}
// Use a GettingACourse controller to find the item in the database
gettingACourse controller = new gettingACourse();
Courses course = controller.getCourse(pathInfo);
if (course == null) {
// No such item, so return a NOT FOUND response
resp.setStatus(HttpServletResponse.SC_NOT_FOUND);
resp.setContentType("text/plain");
resp.getWriter().println("Not a course: " + pathInfo);
return;
}
// Set status code and content type
resp.setStatus(HttpServletResponse.SC_OK);
resp.setContentType("application/json");
// Return the item in JSON format
JSON.getObjectMapper().writeValue(resp.getWriter(), course);
}