SpringMVC learn three, RestFul style and Results Jump

RestFul style

concept

Restful style is a resource location and resource operations. Not standard protocol is not just a style. Based on this style of design software more concise, more structured and easier to implement caching mechanisms.

Features

• Resources: Internet everything can be abstracted as resources
• Resource operation: Use a different POST, DELETE, PUT, GET, use of resources operation
• Respectively add, delete, modify, query.

The traditional way of operating resources : to achieve different effects by different parameters! A single method, post and get

• http://127.0.0.1/item/queryltem.action?id=1 query, GET
• http://127.0.0.1/item/saveltem.action new, POST
• http://127.0.0.1/item/updateItem.action update, POST
• http://127.0.0.1/item/deleteItem.action?id=1 delete, GET or POST

Operation using RESTful resources : different effects may be achieved by different request! As follows: as request address, but the function may be different

• http://127.0.0.1/item/1 query, GET
• http://127.0.0.1/item/1 new, POST
• http://127.0.0.1/item/1 update, PUT
• http://127.0.0.1/item/1 delete, DELETE

Forwards the request forward

@Controller
public class ModelTest {

    @RequestMapping(path = "/m1/t1")
    public String test(Model model) {

        model.addAttribute("msg","ModelTest");
        return "forward:/WEB-INF/jsp/test.jsp";
    }
}

Redirect redirect

@Controller
public class ModelTest {

    @RequestMapping(path = "/m1/t1")
    public String test(Model model) {

        model.addAttribute("msg","ModelTest");
        return "redirect:/index.jsp";
    }
}