@RequestMapping define different processor mapping rules

　　

The @requestmapping annotations allow you to define different processor mapping rules.

1. URL Path Mapping

@RequestMapping (value= "item") or @requestmapping ("/item")

Value is an array, you can map multiple URLs to the same method

/*** Check Product List *@return */@RequestMapping (Value= {"ItemList", "Itemlistall" }) PublicModelandview queryitemlist () {//Check Product dataList<Item> list = This. Itemservice.queryitemlist (); //Create Modelandview, set logical view nameModelandview MV=NewModelandview ("ItemList"); //Put the product data in the modelMv.addobject ("ItemList", list); returnMV;}

2. Add to Class

Add @requestmapping (URL) on class to specify a generic request prefix, limiting all method request URLs under this class must start with the request prefix

You can use this method to classify URLs, such as:

The request URL that needs to enter the Queryitemlist () method At this point is:

Http://127.0.0.1:8080/springmvc-web2/item/itemList.action

Or

Http://127.0.0.1:8080/springmvc-web2/item/itemListAll.action

3. Request Method Qualification

In addition to the URL can be set, you can also qualify the request in the method

• Restrict Get methods

@RequestMapping (method = Requestmethod.get)

If you access via post, the error is:

HTTP Status 405-request method ' POST ' not supported

For example:

@RequestMapping (value = "ItemList", method = Requestmethod.post)

• Limit Post method

@RequestMapping (method = Requestmethod.post)

If get access then error:

HTTP Status 405-request method ' GET ' not supported

• Both get and post can

@RequestMapping (method = {Requestmethod.get,requestmethod.post})

@RequestMapping define different processor mapping rules