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This article mainly introduces "how to solve the problem of invalid Springmvc jump controller". In daily operation, I believe that many people have doubts about how to solve the problem of invalid Springmvc jump controller. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful for everyone to answer the question of "how to solve the problem of invalid Springmvc jump controller". Next, please follow the editor to study!

Catalogue

Invalid Springmvc jump controller

1 、 springmvc-servlet.xml

2. Web.xml, which will be changed in the configuration file

Springmvc cannot enter controller, and the backend does not report an error.

1. Check whether it is configured.

2. Whether to configure or not

3. Whether the controller class is added

4. View parser

5. Whether the web.xml file is configured

Invalid Springmvc jump controller

When building a Springmvc project and performing business processing and logic jump through controller, it is often found that the interface URL is spelled correctly but cannot access the control layer. Here are two instructions for troubleshooting:

1 、 springmvc-servlet.xml

(only indicate that other configurations of controller are added by yourself), add to the configuration file

/ / add 2 and web.xml to the path based on the actual demand, and add springmvc * .do in the modified configuration file

Modify to

Springmvc /

The controller format is as follows:

@ Controller@RequestMapping ("/ task") public class TaskController {@ Autowired InsertTask insertTask;// injection add Task Interface @ RequestMapping (value= "/ insertTask") public void insertTask (@ RequestParam ("productId") int productId,@RequestParam ("taskname") String taskname, HttpServletRequest request,Model model) {insertTask.insertTaskService (productId, taskname) @ ResponseBody @ RequestMapping (value= "/ demo", method=RequestMethod.GET) public String name () {System.err.println ("demo123"); return "demo";}

The format of the API access path is as follows: http://localhost:8080/task/demo

Springmvc cannot enter controller, and the backend does not report an error.

Tell me about the solution.

1. Check whether it is configured.

Processor mapper, processor adapter

2. Whether to configure or not

Scan controller packet

3. Whether the controller class is added

@ contaoller comment

@ Controllerpublic class ItemController {@ Autowired private ItemService itemService; @ RequestMapping ("/ item/ {itemId}") @ ResponseBody public TbItem getItemById (@ PathVariable Long itemId) {System.err.println (123); TbItem tbItem = itemService.getItemById (itemId); return tbItem;}} 4, View Parser

Whether the configuration is correct

5. Whether the web.xml file is configured

Springmvc file startup

Springmvc org.springframework.web.servlet.DispatcherServlet contextConfigLocation classpath:spring/springmvc.xml 1 springmvc / at this point, the study on "how to solve the problem of invalid Springmvc jumping controller" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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