spring – Web应用程序异常：javax.ws.rs.NotSupportedException：HTTP 415不支持的媒体类型
作者：互联网
我在申请中使用了平针织物和弹簧.在处理任何AJAX请求时我没有任何问题,但在上传文件时我得到不支持的媒体错误.我尝试了几种方法,但没有找到任何解决方法.想知道是否有人可以帮助我找到问题的根本原因.感谢您的帮助.
服务器端实现
web.xml中
<servlet>
<servlet-name>jersey-servlet</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>javax.ws.rs.Application</param-name>
<param-value>org.blanc.whiteboard.RestResourceApplication</param-value>
</init-param>
<init-param>
<param-name>org.glassfish.jersey.api.json.POJOMappingFeature</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>jersey.config.server.provider.classnames</param-name>
<param-value>org.glassfish.jersey.filter.LoggingFilter;org.glassfish.jersey.media.multipart.MultiPartFeature</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
资源类
@Path("/upload")
@POST
//@Consumes({ MediaType.MULTIPART_FORM_DATA })
public Response uploadAsset(@Context SecurityContext sc,
MultipartHttpServletRequest request) {
User user = loadUserFromSecurityContext(sc);
MultipartFile file = null;
// 1. build an iterator
Iterator<String> itr = request.getFileNames();
// 2. get each file
while (itr.hasNext()) {
// 2.1 get next MultipartFile
file = request.getFile(itr.next());
if (file == null) {
throw new FileUploadException("File is null.");
}
LOG.info(file.getOriginalFilename() + " uploaded! " + files.size());
// 2.2 if files > 10 remove the first from list
if (files.size() > 10)
files.pop();
}
return Response.ok().build();
}
的pom.xml
<jersey.version>2.20</jersey.version>
.....
<dependency>
<groupId>org.glassfish.jersey.ext</groupId>
<artifactId>jersey-spring3</artifactId>
<version>${jersey.version}</version>
<exclusions>
<exclusion>
<artifactId>spring-core</artifactId>
<groupId>org.springframework</groupId>
</exclusion>
<exclusion>
<artifactId>spring-aop</artifactId>
<groupId>org.springframework</groupId>
</exclusion>
<exclusion>
<artifactId>spring-beans</artifactId>
<groupId>org.springframework</groupId>
</exclusion>
<exclusion>
<artifactId>spring-context</artifactId>
<groupId>org.springframework</groupId>
</exclusion>
<exclusion>
<artifactId>spring-web</artifactId>
<groupId>org.springframework</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-client</artifactId>
<version>${jersey.version}</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-common</artifactId>
<version>${jersey.version}</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-json-jackson</artifactId>
<version>${jersey.version}</version>
</dependency>
<!-- File upload -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>${commons-fileupload.version}</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>${commons-io.version}</version>
</dependency>
错误：
Aug 12, 2015 7:21:58 PM org.glassfish.jersey.filter.LoggingFilter log
INFO: 4 * Server responded with a response on thread http-bio-8080-exec-5
4 < 200
4 < Access-Control-Allow-Headers: X-HTTP-Method-Override, Content-Type, x-requested-with, Authorization, Cache-Control
4 < Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS
4 < Access-Control-Allow-Origin: http://localhost:9000
4 < Access-Control-Max-Age: 3600
4 < Content-Type: application/json
Aug 12, 2015 7:22:15 PM org.glassfish.jersey.filter.LoggingFilter log
INFO: 5 * Server has received a request on thread http-bio-8080-exec-1
5 > OPTIONS http://localhost:8080/v1.0/assets/upload
5 > accept: */*
5 > accept-encoding: gzip, deflate, sdch
5 > accept-language: en-US,en;q=0.8
5 > access-control-request-headers: accept, cache-control, content-type, x-requested-with
5 > access-control-request-method: POST
5 > cache-control: no-cache
5 > connection: keep-alive
5 > host: localhost:8080
5 > origin: http://localhost:9000
5 > pragma: no-cache
5 > referer: http://localhost:9000/debug.html
5 > user-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.130 Safari/537.36
Aug 12, 2015 7:22:15 PM org.glassfish.jersey.filter.LoggingFilter log
INFO: 5 * Server responded with a response on thread http-bio-8080-exec-1
5 < 200
5 < Access-Control-Allow-Headers: X-HTTP-Method-Override, Content-Type, x-requested-with, Authorization, Cache-Control
5 < Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS
5 < Access-Control-Allow-Origin: http://localhost:9000
5 < Access-Control-Max-Age: 3600
5 < Allow: POST,OPTIONS
5 < Content-Type: application/vnd.sun.wadl+xml
5 < Last-modified: Wed, 12 Aug 2015 19:22:15 EDT
Aug 12, 2015 7:22:15 PM org.glassfish.jersey.filter.LoggingFilter log
INFO: 6 * Server has received a request on thread http-bio-8080-exec-10
6 > POST http://localhost:8080/v1.0/assets/upload
6 > accept: application/json
6 > accept-encoding: gzip, deflate
6 > accept-language: en-US,en;q=0.8
6 > cache-control: no-cache
6 > connection: keep-alive
6 > content-length: 108054
6 > content-type: multipart/form-data; boundary=----WebKitFormBoundarywS3v9iwIqD3NwnYt
6 > host: localhost:8080
6 > origin: http://localhost:9000
6 > pragma: no-cache
6 > referer: http://localhost:9000/debug.html
6 > user-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.130 Safari/537.36
6 > x-requested-with: XMLHttpRequest
19:22:15.340 [http-bio-8080-exec-10] INFO o.b.w.r.GenericExceptionMapper - Web Application Exception: **javax.ws.rs.NotSupportedException: HTTP 415 Unsupported Media Type**
Aug 12, 2015 7:22:15 PM org.glassfish.jersey.filter.LoggingFilter log
INFO: 6 * Server responded with a response on thread http-bio-8080-exec-10
6 < 415
6 < Access-Control-Allow-Headers: X-HTTP-Method-Override, Content-Type, x-requested-with, Authorization, Cache-Control
6 < Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS
6 < Access-Control-Allow-Origin: http://localhost:9000
6 < Access-Control-Max-Age: 3600
在前端我正在使用[dropzone] [1]
解决方法:
您不能只期望将请求主体解析为任意数据类型(即MultipartHttpServletRequest).它的工作原理(使用Jersey和JAX-RS)是通过MessageBodyReaders(你可以阅读更多here).
基本上,基于请求的Content-Type(多部分/表单数据)和方法参数类型(MultipartHttpServletRequest),Jersey将通过它的注册表查看可以处理这两个因素的MessageBodyReader.如果它找不到,它将抛出您面临的异常并发送s 415.
话虽这么说,你应该做的只是使用multipart support already provided by Jersey.它附带了所需的MessageBodyReader来处理多部分数据的一些Jersey特定(和其他常见)数据类型.你首先需要依赖
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-multipart</artifactId>
<version>${jersey2.version}</version>
</dependency>
然后,您需要通过在init-param中添加要素类名来注册已经完成的功能
<init-param>
<param-name>jersey.config.server.provider.classnames</param-name>
<param-value>
org.glassfish.jersey.filter.LoggingFilter;
org.glassfish.jersey.media.multipart.MultiPartFeature
</param-value>
</init-param>
然后你只需要使用它的组件.我提供的链接给出了完整的解释.使用此功能的最常用方法是使用@FormDataParam注释作为方法参数.例如
@Consumes({ MediaType.MULTIPART_FORM_DATA })
public Response uploadAsset(@FormDataParam("file") InputStream in) {}
其中InputStream是Content-Disposition中名为“file”的特定文件.
还有一些其他方法可以接受文件.您可以包含整个多部分主体,并像您当前一样遍历各个部分.例如
@Consumes({ MediaType.MULTIPART_FORM_DATA })
public Response uploadAsset(FormDataMultiPart multipart) {
Map<String, List<FormDataBodyPart>> map = multipart.getFields();
for (Map.Entry<String, List<FormDataBodyPart>> entry: map.entrySet()) {
for (FormDataBodyPart part: entry.getValue()) {
InputStream in = part.getEntityAs(InputStream.class);
String name = part.getName();
}
}
}
有关更多信息,请访问我上面提供的链接.
标签：spring,multipartform-data,jersey-2-0,dropzone-js,jersey-client 来源： https://codeday.me/bug/20190711/1433943.html