java 多文件上传使用@Context HttpServletRequest 和@FormDataParam 在球衣
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Multiple File Upload using @Context HttpServletRequest with @FormDataParam in jersey
提问by agpt
I have created a jersey restful web service where I managedto upload multiple number of filesusing @Context HttpServletRequest requestas method signature which work nicely.
Thing is, to fetch other form fields I need to repetitively check with .isFormField();method with relative .getName();for file or .getFieldName();, and .getString();method to check whether required fields are present or not every time the web service is calledwhich I think little lengthy and expensive process if there are several other fields.
我创建了一个 jersey restful web 服务，我设法使用方法签名上传了多个文件，这些文件@Context HttpServletRequest request工作得很好。
问题是，要获取其他表单字段，我需要.isFormField();使用相对.getName();文件或方法重复检查.getFieldName();，以及每次调用 Web 服务时.getString();检查所需字段是否存在的方法，我认为如果有其他几个领域。
Easier approach was to use @FormDataParamwhere webservice used to exposed with parameter which client need to pass but problemis I am not able to upload more than one file at one go.
更简单的方法是使用@FormDataParamwebservice 过去使用客户端需要传递的参数公开的地方，但问题是我无法一次上传多个文件。
Since Its also not possible to use request.getParameter("field1");to get other form fields if media type or enctype is multipart/form-data.
因为request.getParameter("field1");如果 media type 或 enctype 是multipart/form-data.
Whenever I tried to combine both @FormDataParamand @Context HttpServletRequest requesttogether, it throws exception:org.apache.tomcat.util.http.fileupload.FileUploadException: Stream closed
while parsing the requestwith .parseRequest(request);method of ServletFileUploadclass.
每当我试图结合两者@FormDataParam和@Context HttpServletRequest request在一起，它抛出异常：org.apache.tomcat.util.http.fileupload.FileUploadException: Stream closed
在解析请求用.parseRequest(request);的方法ServletFileUpload类。
Kindly suggest some good approach How can I achieve multiple file upload with getting required form fields as easy as @FormDataParamin jersey.
请提出一些好的方法如何通过像@FormDataParam球衣一样简单地获取所需的表单字段来实现多个文件上传。
approach for multiple file upload:
多文件上传方法：
@POST
@Consumes(MediaType.MULTIPART_FORM_DATA)
@Produces(MediaType.APPLICATION_JSON)
@Path("/multipleFiles")
public String restDemo(@Context HttpServletRequest request)
{
//...code goes here
}
My form:
我的表格：
output:(after parsing request)
输出：（解析请求后）
field1 > abc
field2 > xyz
Chrysanthemum.jpg Size: 879394
Desert.jpg Size: 845941
Hydrangeas.jpg Size: 595284
Jellyfish.jpg Size: 775702
field1 > abc
field2 > xyz
Chrysanthemum.jpg 尺寸：879394
Desert.jpg 尺寸：845941
Hydrangeas.jpg 尺寸：595284
Jellyfish.jpg 尺寸：775702
回答by Marcos Zolnowski
If the fields have the same name, like this:
如果字段具有相同的名称，如下所示：
<form name="formtest" action="rest/multipleFiles" method="POST" enctype="multipart/form-data">
<input type="text" name="atext" value="abc" />
<input type="text" name="btext" value="123" />
<input type="file" name="zfile" value="" />
<input type="file" name="zfile" value="" />
<input type="submit" value="submit" />
</form>
You can use:
您可以使用：
@POST
@Consumes(MediaType.MULTIPART_FORM_DATA)
@Produces(MediaType.APPLICATION_JSON)
@Path("/multipleFiles")
public String restDemo(@FormDataParam("zfile") List<FormDataBodyPart> zfile)
Now, I advise against using HttpServletRequest. If you need to process everything, use this:
现在，我建议不要使用 HttpServletRequest。如果您需要处理所有内容，请使用以下命令：
@POST
@Consumes(MediaType.MULTIPART_FORM_DATA)
@Produces(MediaType.APPLICATION_JSON)
@Path("/multipleFiles")
public String restDemo(FormDataMultiPart formParams) {
formParams.getFields();
}
