Java 上传文件
我正在尝试使用rest webservice上载文件。这是我的代码:Java 上传文件,java,web-services,rest,Java,Web Services,Rest,我正在尝试使用rest webservice上载文件。这是我的代码: @POST @Path(value="upload") @Consumes(MediaType.MULTIPART_FORM_DATA) public Response uploadFile( @FormDataParam("file") InputStream fileInputStream,@FormDataParam("file") FormDataContentDisposition fileD
@POST
@Path(value="upload")
@Consumes(MediaType.MULTIPART_FORM_DATA)
public Response uploadFile(
@FormDataParam("file") InputStream fileInputStream,@FormDataParam("file") FormDataContentDisposition fileDetail) {
String filePath = "C://Users/Marya/Desktop/" +fileDetail.getFileName() ;//line 28
System.out.println("*****serverpath********");
saveFile(fileInputStream, filePath);
String output = "File saved to server location : " + filePath;
System.out.println("done");
return Response.status(200).entity(output).build();
}
我添加了必需的jar,我得到了这个错误
新错误
你的图书馆是什么?您似乎缺少jersey multipart…我添加了massing jars,现在我得到了另一个错误!!!!我编辑了我的帖子,所以你可以看到新的错误。请检查一下,没有行号就很难分辨,但我怀疑是文件详细信息为空。您确定表单参数正确吗?没错,fileDetail为null。我编辑了我的帖子,以便您可以看到获取NullPointerExceptionIs fileInputStream的行也为null?
Grave: The RuntimeException could not be mapped to a response, re-throwing to the HTTP container
java.lang.NullPointerException
at com.example.upload.uploadFile(upload.java:28)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205)
at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)