我正在使用基于Jersey的Restful Service实施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(请参见下面的代码)
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(); } } }
这些是我在lib中拥有的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
尝试启动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。但是有相同的解决方案。我也无法运行这些代码。我认为我对JAR文件做错了。有人可以帮我吗?
摆脱jersey-multipart-1.18.jar。就是说Jersey1.x。加上这两个
jersey-multipart-1.18.jar
jersey-media-multipart-2.17
mimepull 1.9.3
对于Maven,你将使用以下依赖关系(你无需显式添加mimepull依赖关系,因为该依赖关系会将其引入)。
<dependency> <groupId>org.glassfish.jersey.media</groupId> <artifactId>jersey-media-multipart</artifactId> <version>2.17</version> <!-- Make sure the Jersey version matches the one you are currently using --> </dependency>
然后,你需要注册MultiPartFeature。如果你使用ResourceConfigfor进行配置,则只需执行
register(MultiPartFeature.class);
如果你使用的是web.xml,则可以将类作为添加到Jersey servlet中。
<init-param> <param-name>jersey.config.server.provider.classnames</param-name> <param-value>org.glassfish.jersey.media.multipart.MultiPartFeature</param-value> </init-param>
请注意,如果你要注册多个提供程序,则可以用逗号或分号分隔每个提供程序类。你不能重复使用param-name两次。见Suarabh的回答
UPDATE
同样,一旦摆脱了,jersey-multipart-1.18.jar你将为缺少的导入类产生编译错误。在大多数情况下,类名称仍然相同,只是包已更改,即
org.glassfish.jersey.media.multipart.FormDataParam
org.glassfish.jersey.media.multipart.FormDataContentDisposition
Aside
如果你要使用其他格式ModelValidationException,则这里有一些链接,以获取有关其他导致异常的信息。