Java 如何使用ajax文件上传和spring mvc上传文件？
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How to upload file using ajax file upload and spring mvc?
提问by Amit Das
I have a jsp file in which i am uploading a file using ajax file upload method. For backend handling of file i made a contoller in spring. But i could not find that how can i handle file in spring 2.5 in this condition ? My Code is -
我有一个 jsp 文件，我在其中使用 ajax 文件上传方法上传文件。对于文件的后端处理，我在春季制作了一个控制器。但是我找不到在这种情况下如何在 spring 2.5 中处理文件？我的代码是 -
JSP FILE
JSP文件
<input type="file" name="file" />
<script type="text/javascript">
function saveMedia() {
var formData = new FormData();
formData.append('file', $('input[type=file]')[0].files[0]);
console.log("form data " + formData);
$.ajax({
url : 'ajaxSaveMedia.do',
data : formData,
processData : false,
contentType : false,
type : 'POST',
success : function(data) {
alert(data);
},
error : function(err) {
alert(err);
}
});
}
</script>
采纳答案by Constantine
There are two main steps:
主要有两个步骤：
1) add an instance of multipart resolverto the Spring context
1) 将multipart 解析器的实例添加到 Spring 上下文中
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver" />
2) add a handler method
2) 添加处理程序方法
// I assume that your controller is annotated with /ajaxSaveMedia.do
@RequestMapping(method = RequestMethod.POST)
public @ResponseBody String doUpload(@RequestParam("file") MultipartFile multipartFile) {
return "Uploaded: " + multipartFile.getSize() + " bytes";
}
To get an instance of java.io.Filefrom org.springframework.web.multipart.MultipartFile:
要获取java.io.Filefrom的实例org.springframework.web.multipart.MultipartFile：
File file = new File("my-file.txt");
multipartFile.transferTo(file);
