使用 AngularJS 和 SpringMVC 进行多部分文件上传
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【中文标题】使用 AngularJS 和 SpringMVC 进行多部分文件上传【英文标题】:Multipart File Upload using AngularJS and SpringMVC 【发布时间】:2017-07-29 00:45:09 【问题描述】:我是 angularJS 的新手,并尝试使用 angular JS 和 Spring MVC 上传文件,但无法获得所需的解决方案并最终在 JS Controller 中出现异常。
下面是代码,看看,请帮助我。谢谢
ApplicationContext.xml
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="10000000" /> <!-- setting maximum upload size -->
</bean>
JSP:
<div data-ng-controller='QuestionController'>
<form name="createChapForm" data-ng-submit="submitQue();" enctype="multipart/form-data" class="form-horizontal">
<div class="form-group">
<label class="control-label col-sm-3">Select Class * :</label>
<div class="col-sm-8">
<div class="col-sm-6">
<select data-ng-model='class_id' data-ng-init='getClasses();' data-ng-change='getSubjectsClasswise(class_id);' class="form-control" required>
<option value="">--SELECT--</option>
<option data-ng-repeat='c in clss' value=" c.class_id"> c.class_name</option>
</select>
</div>
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-3">Select Subject * :</label>
<div class="col-sm-8">
<div class="col-sm-6">
<select data-ng-model='question.sid' data-ng-change='doGetChapters(question.sid);' class="form-control" required>
<option value="">--SELECT--</option>
<option data-ng-repeat='s in subsss' value=" s.sid"> s.subject_name</option>
</select>
</div>
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-3">Select Chapter :</label>
<div class="col-sm-8">
<div class="col-sm-6">
<select data-ng-model='question.chap_id' class="form-control" >
<option value="">ALL</option>
<option data-ng-repeat='c in chapters' value=" c.chap_id"> c.chap_name</option>
</select>
</div>
</div>
</div>
<div class="form-group">
<div class="control-label col-sm-2" >Question :</div>
<div class="col-sm-10 padding_0">
<textarea data-ng-model='question.question_text' rows="5" class="form-control " > </textarea>
<div class="right">
<div class="fileUpload btn btn-primary1 btn-sm">
<input type="file" data-ng-model="file" name="file" id="file" id="q_id" class="upload" />
</div>
</div>
</div>
</div>
</form>
</div>
AngularJS 控制器:
$scope.submitQue = function()
console.log('file is ' ); console.dir(file.files[0]);
var URL =appURL+'/adm/doAddQuestion.do';
var fd = new FormData();
fd.append('file', file.files[0]);
fd.append('questionBean', angular.toJson($scope.question, true));
$http.post(URL, fd,
transformRequest : angular.identity,
headers :
'Content-Type' : undefined
).success(function()
console.log('success');
).error(function()
console.log('error');
);
Java 控制器:
@RequestMapping(value = "/doAddQuestion.do", method = RequestMethod.POST, consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
public @ResponseBody String saveUserDataAndFile(@RequestParam(value = "file") MultipartFile file, @RequestBody QuestionBean questionBean)
System.out.println("output: "+questionBean.getQuestion_text());
// Im Still wotking on it
return "";
例外情况:
Mar 08, 2017 7:46:46 PM org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver handleHttpMessageNotReadable
WARNING: Failed to read HTTP message: org.springframework.http.converter.HttpMessageNotReadableException: Could not read document: Unexpected character ('-' (code 45)) in numeric value: expected digit (0-9) to follow minus sign, for valid numeric value
at [Source: java.io.PushbackInputStream@bc03e1; line: 1, column: 3]; nested exception is com.fasterxml.jackson.core.JsonParseException: Unexpected character ('-' (code 45)) in numeric value: expected digit (0-9) to follow minus sign, for valid numeric value
at [Source: java.io.PushbackInputStream@bc03e1; line: 1, column: 3]
Mar 08, 2017 7:46:46 PM org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver logException
WARNING: Handler execution resulted in exception: Could not read document: Unexpected character ('-' (code 45)) in numeric value: expected digit (0-9) to follow minus sign, for valid numeric value
at [Source: java.io.PushbackInputStream@bc03e1; line: 1, column: 3]; nested exception is com.fasterxml.jackson.core.JsonParseException: Unexpected character ('-' (code 45)) in numeric value: expected digit (0-9) to follow minus sign, for valid numeric value
at [Source: java.io.PushbackInputStream@bc03e1; line: 1, column: 3]
【问题讨论】:
你的错误很明显Expected MultipartHttpServletRequest: is a MultipartResolver configured?
@see Multipart Resolver
@EddieB 已更改,但仍然给出相同的异常
'改变'?
你需要configure a multipart resolver
...@更多信息Configure Multipart Resolver
@EddieB 更新了改动,请看一下
您的原始问题。 multipart resolver
已解决。您需要遵循 SO 规则并为 new problem
发布新问题
【参考方案1】:
在你添加angular.js
文件的地方添加这些.js
文件angular-file-upload.js
,angular-file-upload-shim.js
,ng-file-upload.js
,ng-file-upload-shim.js
您可以从此链接Angular File For Upload.下载
然后在angular.module
中添加ngFileUpload,'angularFileUpload'
,见下一行。
angular.module('formSubmit', [ 'ngFileUpload',
'angularFileUpload', 'ui.router' ]);
然后像这样在你的角度控制器中添加$upload
。
app.controller('FormSubmitController', function($scope, $http, $upload)
在您的 Angular 代码中使用 $upload.upload
而不是 $http.post
。
$upload.upload(
url : 'doAddQuestion.do',
file : yourFile,
data : $scope.questionBean,
method : 'POST'
);
更换你的弹簧控制器。
@RequestMapping(value = "/doAddQuestion.do", method = RequestMethod.POST, headers = ("content-type=multipart/*"))
public @ResponseBody String saveUserDataAndFile(@RequestParam("file") MultipartFile file, QuestionBean questionBean)
System.out.println("output: "+questionBean.getQuestion_text());
// Im Still wotking on it
return "";
【讨论】:
这是什么yourFile
?
在你的情况下,你必须用这个代码替换file.files[0]
在控制台显示错误Error: [$injector:unpr] Unknown provider: $uploadProvider <- $upload
我已经编辑了我的答案,请按照所有步骤操作。
我使用了确切的文件和建议的控制器参数列表。我收到了400 (Bad Request)
有什么建议吗?【参考方案2】:
使用以下代码更新您的请求映射:
@RequestMapping(value = "/upload-file", method = RequestMethod.POST, consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
它将删除您的多部分异常。
【讨论】:
已更改但仍给出相同的异常 我认为您的多部分异常现在已解决,当前问题可能在您的请求对象中。 no.. 现在它给出了一些不同的例外.. 我更新了问题,看看 “QuestionBean”是你的实体类吗?如果是,则实现 Serializable,如以下链接所示:***.com/questions/34888326/…。让我知道它是否适合你 @hrdkisback - 我正在尝试与您在回答中提到的完全相同的功能..即使我面临错误。它在控制台中显示错误 Error: [$injector:unpr] Unknown provider: $uploadProvider以上是关于使用 AngularJS 和 SpringMVC 进行多部分文件上传的主要内容,如果未能解决你的问题,请参考以下文章