EN
Java - spring attribute redirection
13 points
In Spring Freamwork it is possible to make attribute redirection in following way.
RedirectionExampleController.java file:
xxxxxxxxxx1
package com.dirask.examples;2
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import org.springframework.stereotype.Controller;4
import org.springframework.ui.Model;5
import org.springframework.web.bind.annotation.RequestMapping;6
import org.springframework.web.bind.annotation.RequestMethod;7
import org.springframework.web.bind.annotation.ResponseBody;8
import org.springframework.web.servlet.mvc.support.RedirectAttributes;9
10
import java.util.Map;11
12
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public class RedirectionExampleController {14
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(value = "/redirect-to-my-final-page",16
method = RequestMethod.GET)17
public String redirectToMyFinalPage(RedirectAttributes attributes) {18
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attributes.addFlashAttribute("my-redirected-message",20
"This is my message!");21
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return "redirect:/my-final-page";23
}24
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(value = "/my-final-page",26
method = RequestMethod.GET)27
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public String myFinalPage(Model model) {29
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Map<String, Object> attributes = model.asMap();31
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return (String)attributes.get("my-redirected-message");33
}34
}Running:
- Run server, e.g. on
localhost:8080 - Open in browser following link:
http://localhost:8080/redirect-to-my-final-page
Result:
Note: web page should be redirected to
http://localhost:8080/my-final-page.
In this section alternative redirection approach with ModelAndView class is presented.
RedirectionExampleController.java file:
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package com.dirask.examples;2
3
import org.springframework.stereotype.Controller;4
import org.springframework.ui.Model;5
import org.springframework.web.bind.annotation.RequestMapping;6
import org.springframework.web.bind.annotation.RequestMethod;7
import org.springframework.web.bind.annotation.ResponseBody;8
import org.springframework.web.servlet.mvc.support.RedirectAttributes;9
10
import java.util.Map;11
12
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public class RedirectionExampleController {14
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(value = "/redirect-to-my-final-page",16
method = RequestMethod.GET)17
public ModelAndView redirectToMyFinalPage(RedirectAttributes attributes) {18
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attributes.addFlashAttribute("my-redirected-message",20
"This is my message!");21
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return new ModelAndView(new RedirectView("/my-final-page", true));23
}24
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(value = "/my-final-page",26
method = RequestMethod.GET)27
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public String myFinalPage(Model model) {29
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Map<String, Object> attributes = model.asMap();31
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return (String)attributes.get("my-redirected-message");33
}34
}In this section alternative redirection approach with RedirectView class is presented.
RedirectionExampleController.java file:
xxxxxxxxxx1
package com.dirask.examples;2
3
import org.springframework.stereotype.Controller;4
import org.springframework.ui.Model;5
import org.springframework.web.bind.annotation.RequestMapping;6
import org.springframework.web.bind.annotation.RequestMethod;7
import org.springframework.web.bind.annotation.ResponseBody;8
import org.springframework.web.servlet.mvc.support.RedirectAttributes;9
10
import java.util.Map;11
12
13
public class RedirectionExampleController {14
15
(value = "/redirect-to-my-final-page",16
method = RequestMethod.GET)17
public RedirectView redirectToMyFinalPage(RedirectAttributes attributes) {18
19
attributes.addFlashAttribute("my-redirected-message",20
"This is my message!");21
22
return new RedirectView("/my-final-page", true);23
}24
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(value = "/my-final-page",26
method = RequestMethod.GET)27
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public String myFinalPage(Model model) {29
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Map<String, Object> attributes = model.asMap();31
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return (String)attributes.get("my-redirected-message");33
}34
}