Angularjs 文件上传：js和SpringRESTAPI

我的任务是上传最大10MB的文档。我正在使用angular.js和SpringRESTAPI。然而，我有数据要上传文件张贴。 我的代码如下

  $scope.submit=function(mymodel){
            var request = {
        method: 'POST',
        url: '/myurl/update',
        headers: {
            'Content-Type': undefined
        },
        transformRequest: function(data) {
            var formData = new FormData();


            formData.append('mymodel', new Blob([angular.toJson(data.mydata)], {
                type: "application/json"
            }));
            //angular.forEach( $scope.files,function(file){
            formData.append('file', data.file);
            //});
            return formData;
        },
        data: {
            data: mydata,
            file: $scope.files[0]
        }


    }
    $http(request).success(function() {


    }).error(function() {

    });

    }
3. API code


@RequestMapping(value = "/update", method = RequestMethod.POST,consumes = {"multipart/form-data"}) //consumes = {"multipart/form-data"}
public @ResponseBody
void updateExceptionSummary(@RequestPart(value="mymodel") MyModel mymodel ,@RequestPart("file") MultipartFile file)
{


}

我得到以下错误：

    org.springframework.web.multipart.support.MissingServletRequestPartException: Required request part 'mymodel' is not present.
    at org.springframework.web.servlet.mvc.method.annotation.RequestPartMethodArgumentResolver.resolveArgument(RequestPartMethodArgumentResolver.java:194)
    at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:78)
    at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:162)

有人能帮忙吗 我发现请求中发布的

json

数据总是空的

有效载荷 ------WebKitFormBoundaryJIRCCmCILVsxKIBc

Content-Disposition: form-data; name="mymodel"; filename="blob"
Content-Type: application/json

Content-Disposition: form-data; name="file"; filename="1.png"
Content-Type: image/png

------WebKitFormBoundaryJIRCCmCILVsxKIBc

Content-Disposition: form-data; name="mymodel"; filename="blob"
Content-Type: application/json

Content-Disposition: form-data; name="file"; filename="1.png"
Content-Type: image/png

---

使用

@modeldattribute Mymodel Mymodel

并将文件传递到模型本身。请参阅这两个文件和。现在将JSP代码转换为angular.Thanjay，但由于限制较少，我们无法在这里使用Model属性。我更新了下面的代码，上面的错误消失了。现在我面临另一个错误。@RequestMapping（value=“/update”，method=RequestMethod.POST，consumes={“multipart/form data”}//consumes={“multipart/form data”}public@ResponseBody void updateExceptionSummary（@RequestPart（value=“data”）Mymodel Mymodel，@RequestPart（“file”）MultipartFile file）{var request={method:'POST'，url:'/ews/exceptionsummary/update'，headers:{'Content-Type'：undefined}，transformRequest:function（data）{var-formData=new-formData（）；formData.append（'data'，new Blob（[angular.toJson（data.data）]，{type:'application/json'}）；formData.append（'file'，data.file）；return formData；}，data:{data:$scope.data，file:$scope.files[0]}org.springframework.web.multipart.support.MissingServletRequestPartException:所需的请求部分“数据”不存在。位于org.springframework.web.servlet.mvc.method.annotation.RequestPartMethodArgumentResolver.resolveArgument（RequestPartMethodArgumentResolver.java:194）位于org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument（HandlerMethodArgumentResolverComposite.java:78）