ExtJS @requestmapping Address Mapping

Address mapping (turn) Introduction to @RequestMapping usage Details:

In the previous period of time the project used a restful mode to develop the program, but when using post, put mode to submit data, the server side can not accept the submitted data (server-side parameter binding without any annotations), to see the submission method is Application/json, And the server side of the data through Request.getreader () does exist in the browser submitted data. In order to find out the reason, the parameter binding (@RequestParam, @RequestBody, @RequestHeader, @PathVariable) was studied, and also looked at the relevant contents of Httpmessageconverter, summarized here.

Brief introduction:

@RequestMapping

Requestmapping is an annotation that handles request address mappings and can be used on classes or methods. On a class, the method that represents all response requests in a class is the parent path of the address.

The requestmapping annotation has six properties, and we'll describe her in three categories below.

1, value, method;

Value: Specifies the actual address of the request, the specified address can be the URI Template mode (which will be explained later);

Method: Specifies the type of method requested, GET, POST, PUT, delete, and so on;

2, Consumes,produces;

Consumes: Specifies the type of submission to process the request (Content-type), such as Application/json, text/html;

Produces: Specifies the type of content returned, only if the specified type is included in the (Accept) type in the request header;

3, Params,headers;

Params: Specifies that some parameter values must be included in the request before the method is processed.

Headers: Specifies that certain header values must be included in the request in order for the method to process requests.

Example: 1, value/method example

Default Requestmapping ("...") That is value:

@Controller @requestmapping ("/appointments") public class Appointmentscontroller {private AppointmentBook        AppointmentBook; @Autowired public Appointmentscontroller (AppointmentBook appointmentbook) {This.appointmentbook = Appointmentbo    Ok } @RequestMapping (method = requestmethod.get) public map<string, appointment> GET () {return appointmen    Tbook.getappointmentsfortoday (); } @RequestMapping (value= "/{day}", method = requestmethod.get) public map<string, appointment> Getforday (@PathV Ariable @DateTimeFormat (Iso=iso.    Date day, model model) {return appointmentbook.getappointmentsforday (day); } @RequestMapping (value= "/new", method = requestmethod.get) public appointmentform Getnewform () {return new    Appointmentform (); } @RequestMapping (method = requestmethod.post) public String Add (@Valid appointmentform appointment, Bindingresult R Esult) {if (Result.haserrors ()) {return "AppointmEnts/new ";        } appointmentbook.addappointment (appointment);    return "Redirect:/appointments"; }}

　　

The URI value of value is the following three categories:

A) can be specified as a normal specific value;

B) can be specified as a class of values containing a variable (URI Template Patterns with Path Variables);

C) can be specified as a class of values with regular expressions (URI Template Patterns with Regular Expressions);

2 consumes, produces example

Examples of Cousumes:

@Controller @requestmapping (value = "/pets", method = Requestmethod.post, consumes= "Application/json") public void Addpet (@RequestBody Pet Pet, model model) {        //implementation omitted}

The Content-type method only processes requests with the request "Application/json" type.

Examples of produces:

@Controller @requestmapping (value = "/pets/{petid}", method = Requestmethod.get, produces= "Application/json") @ Responsebodypublic Pet Getpet (@PathVariable String Petid, model model) {        //implementation omitted}

The Application/json method only handles requests in the request that accept headers contain "a", and implies that the returned content type is Application/json;

3 Params, headers example

Examples of params:

@Controller @requestmapping ("/owners/{ownerid}")  Public class Relativepathuritemplatecontroller {  = "/pets/{petid}", method = Requestmethod.get, params= "myparam= MyValue ")  publicvoid  findpet (@PathVariable string ownerid, @PathVariable string Petid, model model) {        //  implementation omitted  }}

A request with a value of "myvalue" named "Myparam" is included in the processing request only;

Examples of headers:

@Controller @requestmapping ("/owners/{ownerid}")  Public class  = "/pets", method = Requestmethod.get, headers= "referer=http://www.ifeng.com/")  public  void  findpet (@PathVariable string ownerid, @PathVariable string petid, model model) {           Implementation omitted  }}

The header that handles request only contains requests that specify the "Refer" request header and the corresponding value " http://www.ifeng.com/ ".

ExtJS @requestmapping Address mapping