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我正在使用基于 Jersey 的宁静服务实现策略来构建将用于上传文件的服务。我的服务类名称是：UploadFileService.java（见下面的代码）
package com.jerser.service;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import com.sun.jersey.core.header.FormDataContentDisposition;
import com.sun.jersey.multipart.FormDataParam;
@Path("/fileUpload")
public class UploadFileService {
@POST
@Path("/upload")
@Consumes(MediaType.MULTIPART_FORM_DATA)
public Response uploadFile(
@FormDataParam("file") InputStream uploadedInputStream,
@FormDataParam("file") FormDataContentDisposition fileDetail) {
String uploadedFileLocation = "d://uploaded/" + fileDetail.getFileName();
// save it
writeToFile(uploadedInputStream, uploadedFileLocation);
String output = "File uploaded to : " + uploadedFileLocation;
return Response.status(200).entity(output).build();
}
// save uploaded file to new location
private void writeToFile(InputStream uploadedInputStream,
String uploadedFileLocation) {
try {
OutputStream out = new FileOutputStream(new File(
uploadedFileLocation));
int read = 0;
byte[] bytes = new byte[1024];
out = new FileOutputStream(new File(uploadedFileLocation));
while ((read = uploadedInputStream.read(bytes)) != -1) {
out.write(bytes, 0, read);
}
out.flush();
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
这些是我的库中的 JAR 文件：
> aopalliance-repackaged-2.4.0-b10.jar > asm-debug-all-5.0.2.jar > hk2-api-2.4.0-b10.jar > hk2-locator-2.4.0-b10.jar > hk2-utils-2.4.0-b10.jar > javassist-3.18.1-GA.jar > javax.annotation-api-1.2.jar > javax.inject-2.4.0-b10.jar > javax.servlet-api-3.0.1.jar > javax.ws.rs-api-2.0.1.jar > jaxb-api-2.2.7.jar > jersey-client.jar > jersey-common.jar > jersey-container-servlet-core.jar > jersey-container-servlet.jar > jersey-core-1.11.jar > jersey-guava-2.17.jar > jersey-media-jaxb.jar > jersey-multipart-1.18.jar > jersey-server.jar > org.osgi.core-4.2.0.jar > osgi-resource-locator-1.0.1.jar > persistence-api-1.0.jar > validation-api-1.1.0.Final.jar > > ``` 当我尝试启动我的 tomcat 服务器时出现以下错误：org.glassfish.jersey.server.model.ModelValidationException: Validation of the application resource model has failed during application initialization. [[FATAL] No injection source found for a parameter of type public javax.ws.rs.core.Response com.jerser.service.UploadFileService.uploadFile(java.io.InputStream,com.sun.jersey.core.header.FormDataContentDisposition) at index 0.; source=‘ResourceMethod{httpMethod=POST, consumedTypes=[multipart/form-data], producedTypes=[], suspended=false, suspendTimeout=0, suspendTimeoutUnit=MILLISECONDS, invocable=Invocable{handler=ClassBasedMethodHandler{handlerClass=class com.jerser.service.UploadFileService, handlerConstructors=[org.glassfish.jersey.server.model.HandlerConstructor@d3e2d4]}, definitionMethod=public javax.ws.rs.core.Response com.jerser.service.UploadFileService.uploadFile(java.io.InputStream,com.sun.jersey.core.header.FormDataContentDisposition), parameters=[Parameter [type=class java.io.InputStream, source=file, defaultValue=null], Parameter [type=class com.sun.jersey.core.header.FormDataContentDisposition, source=file, defaultValue=null]], responseType=class javax.ws.rs.core.Response}, nameBindings=[]}’] at org.glassfish.jersey.server.ApplicationHandler.initialize(ApplicationHandler.java:528) at org.glassfish.jersey.server.ApplicationHandler.access\(500(ApplicationHandler.java:166) at org.glassfish.jersey.server.ApplicationHandler\)3.run(ApplicationHandler.java:327) at org.glassfish.jersey.internal.Errors\(2.call(Errors.java:289) at org.glassfish.jersey.internal.Errors\)2.call(Errors.java:286) at org.glassfish.jersey.internal.Errors.process(Errors.java:315) at org.glassfish.jersey.internal.Errors.process(Errors.java:297) at org.glassfish.jersey.internal.Errors.processWithException(Errors.java:286) at org.glassfish.jersey.server.ApplicationHandler.
(ApplicationHandler.java:324) at org.glassfish.jersey.servlet.WebComponent. (WebComponent.java:338) at org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:171) at org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:363) at javax.servlet.GenericServlet.init(GenericServlet.java:160) at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1176) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1102) at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1009) at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4885) at org.apache.catalina.core.StandardContext\(3.call(StandardContext.java:5212) at org.apache.catalina.core.StandardContext\)3.call(StandardContext.java:5207) at java.util.concurrent.FutureTask\(Sync.innerRun(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor\)Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source)
”`
在互联网上，我发现有很多示例展示了如何使用 RESTFul API 上传 MULTIPART 文件。但是使用相同的解决方案。我也无法运行这些代码。我想我对 JAR 文件做错了什么。谁能帮我解决这个问题？
原文由 Swarup Saha 发布，翻译遵循 CC BY-SA 4.0 许可协议
java
摆脱
jersey-multipart-1.18.jar。这是 Jersey 1.x 的。添加这两个对于 Maven，您将使用以下依赖项（您不需要显式添加
mimepull依赖项，因为这将引入它）。然后你需要注册
MultiPartFeature。如果您使用ResourceConfig进行配置，您可以简单地做如果您使用的是 web.xml，则可以将该类作为
<init-param>添加到 Jersey servlet请注意，如果您有多个要注册的提供商，则可以使用逗号、分号或空格/换行符分隔每个提供商类别。您不能使用相同
param-name两次。查看 Suarabh 的回答更新
此外，一旦你摆脱了
jersey-multipart-1.18.jar你将遇到缺少导入类的编译错误。大多数情况下，类名仍然相同，只是包发生了变化，即org.glassfish.jersey.media.multipart.FormDataParamorg.glassfish.jersey.media.multipart.FormDataContentDisposition对于 Dropwizard
如果您使用的是 Dropwizard，而不是添加
jersey-media-multipart，他们会记录您添加dropwizard-forms。而不是注册MultiPartFeature，你应该注册MultiPartBundle尽管 Dropwizard 捆绑包所做的只是将
MultiPartFeatureResourceConfig但实际上并没有太大区别。在旁边
如果您在这里是为了不同的
ModelValidationException，这里有一些链接可提供有关异常其他原因的信息。