java-Angularjs文件上传不起作用
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Java控制器类：
@RequestMapping(value = "/upload" , method = RequestMethod.POST , consumes="multipart/form-data")
public void upload(@RequestParam MultipartFile file1) {
System.out.println("*****"+ file1);
}
html文件：
<input id="file-0a" class="file" type="file" file-model="myFile"/>
<button ng-click="uploadFile()">upload me</button>
角js：
$scope.uploadFile = function(){
var file = $scope.myFile;
console.log('file is ' + JSON.stringify(file));
var fd = new FormData();
fd.append('file', file);
var resource = /upload;
$http.post(resource, fd, {
transformRequest: angular.identity,
headers: {'Content-Type': undefined}
}).success(function(){ }).error(function(){ });
}
这是我在服务器日志中无法理解的错误：
INFO: Server startup in 38138 ms
Feb 14, 2015 11:45:17 PM org.apache.catalina.core.ApplicationDispatcher invoke
SEVERE: Servlet.service() for servlet dispatcher threw exception
java.lang.IllegalStateException: Cannot forward after response has been committed
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:348)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:338)
at org.springframework.web.servlet.resource.DefaultServletHttpRequestHandler.handleRequest(DefaultServletHttpRequestHandler.java:122)
at org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter.handle(HttpRequestHandlerAdapter.java:51)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:938)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:863)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:748)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:604)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:543)
at org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:467)
at org.apache.catalina.core.StandardHostValve.status(StandardHostValve.java:342)
at org.apache.catalina.core.StandardHostValve.throwable(StandardHostValve.java:434)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:205)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Feb 14, 2015 11:45:17 PM org.apache.catalina.core.StandardHostValve custom
SEVERE: Exception Processing ErrorPage[errorCode=0, location=/error.html]
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalStateException: Cannot forward after response has been committed
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:973)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:863)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
解决方法:
尝试以下方法.对我来说很好.
HTML你应该有
<input id="file-0a" class="file" type="file" file-model="myFile" name="myFile" />
<button ng-click="uploadFile()">upload me</button>
注意输入的名称.
然后在JS控制器方法中
$scope.uploadFile = function(){
var formData=new FormData();
formData.append("file",myFile.files[0]); //myFile.files[0] will take the file and append in formData since the name is myFile.
$http({
method: 'POST',
url: '/upload', // The URL to Post.
headers: {'Content-Type': undefined}, // Set the Content-Type to undefined always.
data: formData,
transformRequest: function(data, headersGetterFunction) {
return data;
}
}).success(function(data, status) {
})
.error(function(data, status) {
});
}
现在在您的Java Controller类中
@RequestMapping(value = "/upload" , method = RequestMethod.POST)
public void upload(HttpServletRequest request) {
//org.springframework.web.multipart.MultipartHttpServletRequest
MultipartHttpServletRequest mRequest;
mRequest = (MultipartHttpServletRequest) request;
Iterator<String> itr = mRequest.getFileNames();
while (itr.hasNext()) {
//org.springframework.web.multipart.MultipartFile
MultipartFile mFile = mRequest.getFile(itr.next());
String fileName = mFile.getOriginalFilename();
System.out.println("*****"+ fileName);
//To copy the file to a specific location in machine.
File file = new File('path/to/new/location');
FileCopyUtils.copy(mFile.getBytes(), file); //This will copy the file to the specific location.
}
}
希望这对您有用.并且也要进行异常处理.
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