當我調用RequestMapped類（而不是方法）時執行什麼代碼？

Question

我調用了一個使用RequestMapping定義的類，但我不知道該類上執行了哪些代碼。

<form th:action="@{/admin/gestionUtilisateurs.action}" method="post"> 
    <label>Numéro de contrat: </label> 
    <input type="text" id="numeroContrat" name="numeroContrat" /> 
    <input type="submit" id="changerInformations" name="changerInformations" value="Charger les informations" class="w_actionButton"/> 
</form> 

而且我得到了這個類：

@Controller 
@RequestMapping(value = "/admin/gestionUtilisateurs") 
public class GestionUtilisateursController { 

    @RequestMapping(method = RequestMethod.POST, params = { "changerInformations" }, produces = MediaType.APPLICATION_JSON_VALUE) 
    public String getInformationContrat(HttpServletRequest request, InformationContratForm informationContrat, BindingResult result, Model model) { 
     //code 
    } 

    @ResponseBody 
    @RequestMapping(value = "/modifierMail", method = RequestMethod.POST, produces = MediaType.APPLICATION_JSON_VALUE) 
    public ResponseEntity<ResponseDTO> modifierMail(HttpServletRequest request, @Valid InformationContratForm informationContratForm, 
     BindingResult result) { 
     //code 
    } 

    @ResponseBody 
    @RequestMapping(method = RequestMethod.POST, params = { "importerProfilForm" }, produces = MediaType.APPLICATION_JSON_VALUE) 
    public ResponseEntity<ResponseDTO> importerProfilDeGestion(HttpServletRequest request, @Valid ImporterProfilForm importerProfilForm, 
     BindingResult result) throws UtilisateurInexistantException { 
     //code 
    } 

    @RequestMapping(method = RequestMethod.GET) 
    public String processRechercheContrats(Model model) { 
     //code 
    } 
} 

所以，我想知道的是執行了什麼代碼，以及爲什麼。

Answer 1

鑑於代碼：

<form th:action="@{/admin/gestionUtilisateurs}" method="post"> 
    <label>Numéro de contrat: </label> 
    <input type="text" id="numeroContrat" name="numeroContrat" /> 
    <input type="submit" id="changerInformations" name="changerInformations" value="Charger les informations" class="w_actionButton"/> 
</form> 

方法getInformationContrat將被執行：

@RequestMapping(method = RequestMethod.POST, params = { "changerInformations" }, produces = MediaType.APPLICATION_JSON_VALUE) 
public String getInformationContrat(HttpServletRequest request, InformationContratForm informationContrat, BindingResult result, Model model) { 
    //code 
} 

因爲輸入的屬性名稱是changerInformations，因此它將與屬性綁定PARAMS @RequestMapping註釋的。