我通过jsp格式向Spring控制器发送一个对象。
JSP:
<form:form modelAttribute="uploadItem" action="/uploadObject" method="post" enctype="multipart/form-data">
<form:input path="fileData" accept="audio/mpeg" type="file" id="file-upload" name="file-upload" />
<form:input type="text" path="title" id="upload-title" name="upload-title"/>
<input type="image" src="..." alt="Upload"/>
</form:form>
ModelService:
public void fillUploadMelodyModel(Model model) {
fillAdminRootModel(model);
model.addAttribute("uploadItem", new UploadedItem());
}
UploadedItem:
public class UploadedItem {
private CommonsMultipartFile fileData;
private String title;
}
控制器:
@RequestMapping(value = "/uploadObject", method = RequestMethod.POST)
public String doUpload(UploadedItem uploadItem, BindingResult result, Principal principal) {
//at this point I get an empty object (null null values)
}
有什么问题?如何在jsp中将对象传递给控制器?
答案 0 :(得分:2)
尝试按此更改控制器
@RequestMapping(value = "/uploadObject", method = RequestMethod.POST)
public String doUpload(UploadedItem uploadItem,
BindingResult result,
@RequestParam("fileData") MultipartFile file,
@RequestParam("title") String title,
Principal principal) {
//Here you should receive your parameters
}
答案 1 :(得分:0)
我认为您用于文件(文件上传)和标题(上传标题)的名称与您的域对象属性名称不同步。在Jsp页面中将您的名字更改为fileData和title。