Assume the view resolver is set as follows.

servlet-context.xml

	<beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<beans:property name="prefix" value="/page/" />
		<beans:property name="suffix" value=".jsp" />
	</beans:bean>
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Assume that on the login page, you want to go to the Home page after the successful login. The controller returns “home”,” redirect:home”, and “forward:home”, respectively.

The return value action url
“home” The view parser automatically adds a prefix of /page/ and a suffix of /.jsp/. So forward to /page/home.jsp The URL is still /login
“redirect:home” Returns a request for the corresponding URL (/home). Redirect to another controller for processing Url into/home
“forward:home” Returns a request for the corresponding URL (/home). Forward to another controller for processing The URL is still /login 
@Controller
public class TestLoginController {
	@Autowired
	TestLoginService service;
	
	@RequestMapping("login")
	public String login(Users user, HttpServletRequest request) {
		boolean result = service.login(user);
		if (result) {
			request.getSession().setAttribute("user", user.getUserid()); } / /return "home"; Go straight back to the view, which is /page/home.jsp. But the URL is still /login //return "redirect:home"; Returns a request for the corresponding URL (/home). Redirect to another controller for processing. The URL changes to /home//return "forward:home"; Returns a request for the corresponding URL (/home). Forward to another controller for processing. But the URL is still /login}}Copy the code