Redirect in Spring

spring-rest/README.md

@@ -6,4 +6,4 @@
 ### Relevant Articles: 
 - [Spring @RequestMapping](http://www.baeldung.com/spring-requestmapping)
 - [Http Message Converters with the Spring Framework](http://www.baeldung.com/spring-httpmessageconverter-rest)
-
+- [Redirect in Spring](http://www.baeldung.com/spring-redirect)

spring-rest/src/main/java/org/baeldung/web/controller/redirect/RedirectController.java

@@ -0,0 +1,52 @@
+package org.baeldung.redirect;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.ModelMap;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.servlet.ModelAndView;
+import org.springframework.web.servlet.mvc.support.RedirectAttributes;
+import org.springframework.web.servlet.view.RedirectView;
+
+@Controller
+@RequestMapping("/")
+public class RedirectController {
+
+    @RequestMapping(value = "/redirectWithXMLConfig", method = RequestMethod.GET)
+    public ModelAndView redirectWithUsingXMLConfig(final ModelMap model) {
+        model.addAttribute("attribute", "redirectWithXMLConfig");
+        return new ModelAndView("RedirectedUrl", model);
+    }
+
+    @RequestMapping(value = "/redirectWithRedirectPrefix", method = RequestMethod.GET)
+    public ModelAndView redirectWithUsingRedirectPrefix(final ModelMap model) {
+        model.addAttribute("attribute", "redirectWithRedirectPrefix");
+        return new ModelAndView("redirect:/redirectedUrl", model);
+    }
+
+    @RequestMapping(value = "/redirectWithRedirectAttributes", method = RequestMethod.GET)
+    public RedirectView redirectWithRedirectAttributes(final RedirectAttributes redirectAttributes) {
+        redirectAttributes.addFlashAttribute("flashAttribute", "redirectWithRedirectAttributes");
+        redirectAttributes.addAttribute("attribute", "redirectWithRedirectAttributes");
+        return new RedirectView("redirectedUrl");
+    }
+
+    @RequestMapping(value = "/redirectWithRedirectView", method = RequestMethod.GET)
+    public RedirectView redirectWithUsingRedirectView(final ModelMap model) {
+        model.addAttribute("attribute", "redirectWithRedirectView");
+        return new RedirectView("redirectedUrl");
+    }
+
+    @RequestMapping(value = "/redirectWithForwardPrefix", method = RequestMethod.GET)
+    public ModelAndView redirectWithUsingForwardPrefix(final ModelMap model) {
+        model.addAttribute("attribute", "redirectWithForwardPrefix");
+        return new ModelAndView("forward:/redirectedUrl", model);
+    }
+
+    @RequestMapping(value = "/redirectedUrl", method = RequestMethod.GET)
+    public ModelAndView redirection(final ModelMap model, @ModelAttribute("flashAttribute") final Object flashAttribute) {
+        model.addAttribute("redirectionAttribute", flashAttribute);
+        return new ModelAndView("redirection", model);
+    }
+}

spring-rest/src/test/java/org/baeldung/web/controller/redirect/RedirectControllerTest.java

@@ -0,0 +1,61 @@
+package org.baeldung.redirect;
+
+import static org.hamcrest.CoreMatchers.*;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
+import static org.springframework.test.web.servlet.setup.MockMvcBuilders.*;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.web.context.WebApplicationContext;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@WebAppConfiguration
+@ContextConfiguration("file:src/main/webapp/WEB-INF/mvc-dispatcher-servlet.xml")
+public class RedirectControllerTest {
+
+    private MockMvc mockMvc;
+
+    @Autowired
+    protected WebApplicationContext wac;
+
+    @Before
+    public void setup() {
+        this.mockMvc = webAppContextSetup(this.wac).build();
+    }
+
+    @Test
+    public void whenRedirectOnUrlWithUsingXMLConfig_thenStatusRedirectionAndRedirectedOnUrl() throws Exception {
+        this.mockMvc.perform(get("/redirectWithXMLConfig")).andExpect(status().is3xxRedirection()).andExpect(view().name("RedirectedUrl")).andExpect(model().attribute("attribute", is("redirectWithXMLConfig")))
+                .andExpect(redirectedUrl("redirectedUrl?attribute=redirectWithXMLConfig"));
+    }
+
+    @Test
+    public void whenRedirectOnUrlWithUsingRedirectPrefix_thenStatusRedirectionAndRedirectedOnUrl() throws Exception {
+        this.mockMvc.perform(get("/redirectWithRedirectPrefix")).andExpect(status().is3xxRedirection()).andExpect(view().name("redirect:/redirectedUrl")).andExpect(model().attribute("attribute", is("redirectWithRedirectPrefix")))
+                .andExpect(redirectedUrl("/redirectedUrl?attribute=redirectWithRedirectPrefix"));
+    }
+
+    @Test
+    public void whenRedirectOnUrlWithUsingRedirectAttributes_thenStatusRedirectionAndRedirectedOnUrlAndAddedAttributeToFlashScope() throws Exception {
+        this.mockMvc.perform(get("/redirectWithRedirectAttributes")).andExpect(status().is3xxRedirection()).andExpect(flash().attribute("flashAttribute", is("redirectWithRedirectAttributes")))
+                .andExpect(model().attribute("attribute", is("redirectWithRedirectAttributes"))).andExpect(model().attribute("flashAttribute", is(nullValue()))).andExpect(redirectedUrl("redirectedUrl?attribute=redirectWithRedirectAttributes"));
+    }
+
+    @Test
+    public void whenRedirectOnUrlWithUsingRedirectView_thenStatusRedirectionAndRedirectedOnUrlAndAddedAttributeToFlashScope() throws Exception {
+        this.mockMvc.perform(get("/redirectWithRedirectView")).andExpect(status().is3xxRedirection()).andExpect(model().attribute("attribute", is("redirectWithRedirectView"))).andExpect(redirectedUrl("redirectedUrl?attribute=redirectWithRedirectView"));
+    }
+
+    @Test
+    public void whenRedirectOnUrlWithUsingForwardPrefix_thenStatusOkAndForwardedOnUrl() throws Exception {
+        this.mockMvc.perform(get("/redirectWithForwardPrefix")).andExpect(status().isOk()).andExpect(view().name("forward:/redirectedUrl")).andExpect(model().attribute("attribute", is("redirectWithForwardPrefix"))).andExpect(forwardedUrl("/redirectedUrl"));
+    }
+
+}