Spring MVC/Simple Post请求不起作用

Question

在我的spring MVC应用程序中，我试图发出一个简单的Post请求，但由于请求的主体，它不起作用。我在params中得到了嵌套对象，Spring抛出了这个异常：

org.springframework.beans.InvalidPropertyException: Invalid property 'contrats[0][nomFichier]' of bean class [fr.mnh.signweb.dto.InitSignatureRQDTO]: Property referenced in indexed property path 'contrats[0][nomFichier]' is neither an array nor a List nor a Map; returned value was [fr.mnh.signweb.dto.ContratDTO@1c74fdf]

下面是我的对象DTO：

@NoArgsConstructor
public class InitSignatureRQDTO {

    @Getter
    @Setter
    private String referenceFournisseur;
    @Getter
    @Setter
    private String produit;
    @Getter
    @Setter
    private String civilite;
    @Getter
    @Setter
    private String nom;
    @Getter
    @Setter
    private String prenom;
    @Getter
    @Setter
    private String email;
    @Getter
    @Setter
    private String telephone;
    @Getter
    @Setter
    private String rue;
    @Getter
    @Setter
    private String complementRue;
    @Getter
    @Setter
    private String codePostal;
    @Getter
    @Setter
    private String ville;
    @Getter
    @Setter
    private String pays;
    @Getter
    @Setter
    private List<ContratDTO> contrats;
    @Getter
    @Setter
    private String messageSms;

}

和：

@NoArgsConstructor
public class ContratDTO {

    @Getter
    @Setter
    private String nomFichier;
    /*@Getter
    @Setter
    private byte[] fichier;*/

}

@RequestMapping(value = "/initSign", method = RequestMethod.POST)
    public ResponseEntity launchSign(InitSignatureRQDTO initSignatureRQDTO) {

        System.out.println(initSignatureRQDTO);


    }

public ResponseEntity launchSign(@RequestBody InitSignatureRQDTO initSignatureRQDTO) 

@RequestMapping(value = "/initSign", method = RequestMethod.POST, consumes = MediaType.APPLICATION_JSON_VALUE)
    public ResponseEntity launchSign(InitSignatureRQDTO initSignatureRQDTO) {

我拿到了这些日志：

DEBUG: org.springframework.web.servlet.DispatcherServlet - DispatcherServlet with name 'appServlet' processing POST request for [/initSign]
DEBUG: org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping - Looking up handler method for path /initSign
DEBUG: org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver - Resolving exception from handler [null]: org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported
DEBUG: org.springframework.web.servlet.mvc.annotation.ResponseStatusExceptionResolver - Resolving exception from handler [null]: org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported
DEBUG: org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver - Resolving exception from handler [null]: org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported
DEBUG: org.springframework.web.servlet.DispatcherServlet - Null ModelAndView returned to DispatcherServlet with name 'appServlet': assuming HandlerAdapter completed request handling
DEBUG: org.springframework.web.servlet.DispatcherServlet - Successfully completed request

Answer 1

您在POST请求正文中发送JSON内容，因此您需要在请求中使用内容类型为application/JSON。

x-www-form-urlencoded；charset=utf-8在提交表单时使用。