How to pass #SessionAttributes value between controllers - spring-boot

Question

My first controller is Login
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.SessionAttributes;
import javax.servlet.http.HttpSession;
import java.io.IOException;
#Controller
#SessionAttributes("session")
public class LoginController extends GlobalController {
#RequestMapping(value = "/", method = RequestMethod.GET)
public String indexAction() throws IOException {
return "login";
}
#RequestMapping(value = "/", method= RequestMethod.POST)
public String indexAction(#RequestParam String username, #RequestParam String password,HttpSession session) {
String page = "login";
if(username != "" && password != ""){
try {
if(userService.authenticationUser(username,password) == "success"){
page = "redirect:/main";
session.setAttribute("test","Salom");
//this.httpSession =session;
//System.out.println(session.getAttribute("test"));
}
else page = "login";
}
catch (Exception e){
e.fillInStackTrace();
}
}
else page = "login";
return page;
}
}
My second Controller is Test
package com.springboot.app.controllers.reports;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.SessionAttributes;
import javax.servlet.http.HttpSession;
#SessionAttributes("session")
public class TestController {
#RequestMapping(value = "/test",method = RequestMethod.GET)
public String index(){
#SessionAttributes("session")HttpSession session;
return "";
}
}
---------------------------------------------------------------------------- How to pass #SessionAttributes("session") from login Controller to Test controller or how to store #SessionAttributes("session") in variable

Answer 1

#SessionAttributes is not intended to be used (and will not work also) to store objects in the session between different controllers. The controller annotated with #SessionAttributes must also tell that it is finished (so controllerA not ControllerB). The model message from controller a is still not available for controller B.
see this conversation

Answer 2

you can pass from LoginController to TestController:
e.g. Username = name
LoginController:
import org.springframework.ui.ModelMap;
#Controller
#SessionAttributes("name")
public class LoginController{
#RequestMapping(value="/login", method = RequestMethod.POST)
public String showWelcomePage(ModelMap model, #RequestParam String name, #RequestParam String password){
boolean isValidUser = service.validateUser(name, password);
if (!isValidUser) {
model.put("errorMessage", "Invalid Credentials");
return "login";
}
model.put("name", name);
model.put("password", password);
return "welcome";
TestController:
#SessionAttributes("name")
public void showUsername(ModelMap model){
System.out.println("Username is: " + (String) model.get("name");
}
}
hope there is no typo!