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。 我的服务类名是：UploadFileService.java（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.<init>(ApplicationHandler.java:324)
at org.glassfish.jersey.servlet.WebComponent.<init>(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)
通过互联网，我发现有很多示例显示了如何使用RESTFul API上传MULTIPART文件。但同样的解决方案。我也无法运行这些代码。 我想我在做JAR文件时出错了。有人可以帮我这个吗？
答案 0 :(得分：129)
摆脱jersey-multipart-1.18.jar。那是泽西岛1.x.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，因为这将依赖它。）
<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>
然后您需要注册MultiPartFeature。如果您使用ResourceConfig进行配置，则只需执行
register(MultiPartFeature.class);
如果您使用的是web.xml，则可以将该类作为<init-param>添加到Jersey servlet
<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，如果您要注册多个提供程序，则可以使用逗号或分号分隔每个提供程序类。您不能两次使用相同的param-name。见Suarabh's answer
<强>更新
此外，一旦摆脱jersey-multipart-1.18.jar，您将丢失导入的类的编译错误。在大多数情况下，类名仍然相同，只是包已更改，即
org.glassfish.jersey.media.multipart.FormDataParam org.glassfish.jersey.media.multipart.FormDataContentDisposition 如果你在这里寻找不同的ModelValidationException，这里有一些链接可以获得有关异常的其他原因的信息。
答案 1 :(得分：3)
我也得到了同样的例外。我在web.xml中做了以下更改
<init-param>
<param-name>jersey.config.server.provider.classnames</param-name>
<param-value>org.glassfish.jersey.filter.LoggingFilter;org.glassfish.jersey.moxy.json.MoxyFeature;org.glassfish.jersey.media.multipart.MultiPartFeature</param-value>
</init-param>
并将球衣2.7改为2.9。我不知道这2的变化是什么解决了这个问题。
答案 2 :(得分：2)
以下代码对我有用：
Class->>>添加
Class属性--- >>添加
公共类userREST（）{
@POST
@Path("upload")
@Consumes(MediaType.MULTIPART_FORM_DATA)
@Produces(MediaType.APPLICATION_JSON)
public Response uploadImageFile(@FormDataParam("uploadFile") InputStream fileInputStream,
@FormDataParam("uploadFile") FormDataContentDisposition fileFormDataContentDisposition,
@FormDataParam("FIR_REG_NUM") String FIR_REG_NUM, @FormDataParam("LOGIN_ID") String LOGIN_ID) {
final_json_result = WriteFileInFolder.fileAnalysis(fileInputStream, fileFormDataContentDisposition, FIR_REG_NUM,
LOGIN_ID);
return Response.ok(final_json_result).build();
}// uploadImageFile
公共类FileJAXRSConfig（）{
package ####.jaxrs.jwt;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import javax.ws.rs.ApplicationPath;
import javax.ws.rs.core.Application;
import ####.helper.Common@@@;
import ####.jaxrs.jwt.filters.JWTRequestFilter;
import ####.jaxrs.jwt.filters.JWTResponseFilter;
import ####.service.FileServicesREST;
@ApplicationPath("fileservice")
public class FileJAXRSConfig extends Application {
@Override
public Set<Class<?>> getClasses() {
Common@@@.logging("@ApplicationPath@FileServicesREST...");
Set<Class<?>> clazzes = new HashSet<Class<?>>();
clazzes.add(JWTRequestFilter.class);
clazzes.add(FileServicesREST.class);
clazzes.add(JWTResponseFilter.class);
return clazzes;
}
@Override
public Map<String, Object> getProperties() {
Map<String, Object> properties = new HashMap<String, Object>();
properties.put("jersey.config.server.provider.packages", "####.service");
properties.put("jersey.config.server.provider.classnames", "org.glassfish.jersey.media.multipart.MultiPartFeature");
return properties;
}
}
无需在web.xml中添加以下内容
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>mha.@@@.service</param-value>
</init-param>
<init-param>
<param-name>jersey.config.server.provider.classnames</param-name>
<param-value>org.glassfish.jersey.media.multipart.MultiPartFeature</param-value>
</init-param>
答案 3 :(得分：1)
如果某人正在使用带有@FormDataParam招摇注释的@ApiOperation，那么它将无法正常工作（如此时的swagger最新版本），如下所述：
答案 4 :(得分：1)
注册MultiPartFeature。 在web.xml中，添加到Jersey servlet：
from docplex.mp.model import Model
from docplex.util.environment import get_environment
# ----------------------------------------------------------------------------
# Initialize the problem data
# ----------------------------------------------------------------------------
Categories_groups = {"Carbs": ["Meat","Milk"],"Protein":["Pasta","Bread"], "Fat": ["Oil","Butter"]}
Groups_Products = {"Meat":["Product11","Product12"], "Milk": ["Product21","Product22","Product23"], "Pasta": ["Product31","Product32"],
"Bread":["Product41","Product42"], "Oil":["Product51"],"Butter":["Product61","Product62"]}
Products_Prices ={"Product11":1,"Product12":4, "Product21":1,"Product22":3,"Product23":2,"Product31":4,"Product32":2,
"Product41":1,"Product42":3, "Product51": 1,"Product61":2,"Product62":1}
Uc={"Carbs": 1,"Protein":1, "Fat": 0 }
Ug = {"Meat": 0.8, "Milk": 0.2, "Pasta": 0.1, "Bread": 1, "Oil": 0.01, "Butter": 0.6}
budget=3;
def build_userbasket_model(**kwargs):
allcategories = Categories_groups.keys()
allgroups = Groups_Products.keys()
allproducts = Products_Prices.keys()
# Model
mdl = Model(name='userbasket', **kwargs)
z = mdl.binary_var_dict(allproducts, name='z([%s])')
xg = {g: 1 <= mdl.sum(z[p] for p in Groups_Products[g]) for g in allgroups}
xc = {c: 1 <= mdl.sum(xg[g] for g in Categories_groups[c]) for c in allcategories}
mdl.add_constraint(mdl.sum(Products_Prices[p] * z[p] for p in allproducts) <= budget)
mdl.maximize(mdl.sum(Uc[c] * xc[c] for c in allcategories) + mdl.sum(
xg[g] * Uc[c] * Ug[g] for c in allcategories for g in Categories_groups[c]))
mdl.solve()
return mdl
if __name__ == '__main__':
"""DOcplexcloud credentials can be specified with url and api_key in the code block below.
Alternatively, Context.make_default_context() searches the PYTHONPATH for
the following files:
* cplex_config.py
* cplex_config_<hostname>.py
* docloud_config.py (must only contain context.solver.docloud configuration)
These files contain the credentials and other properties. For example,
something similar to::
context.solver.docloud.url = "https://docloud.service.com/job_manager/rest/v1"
context.solver.docloud.key = "example api_key"
"""
url = None
key = None
mdl = build_userbasket_model()
# will use IBM Decision Optimization on cloud.
if not mdl.solve(url=url, key=key):
print("*** Problem has no solution")
else:
mdl.float_precision = 3
print("* model solved as function:")
mdl.print_solution()
# Save the CPLEX solution as "solution.json" program output
with get_environment().get_output_stream("solution.json") as fp:
mdl.solution.export(fp, "json")
答案 5 :(得分：0)
我在Scala中遇到了同样的问题，这帮助我解决了这个问题。只是想添加一些Scala特定的详细信息，以帮助将Dropwizard与Scala一起使用的任何人。这是一个如何在Scala和Dropwizard项目中“注册” MultiPartFeature的示例。
package org.research.s3.service
import io.dropwizard.Application
import io.dropwizard.setup.Environment
import org.research.s3.service.resource._
import org.research.service.s3.resource.UploadResource
import org.glassfish.jersey.media.multipart.{FormDataParam,MultiPartFeature}
class CmdaaApp() extends Application[CmdaaAppConfig] {
override def run(t: CmdaaAppConfig, env: Environment): Unit = {
env.jersey().register(new RootResource)
//Need this to make the file upload code work in
env.jersey().register(new MultiPartFeature)
env.jersey().register(new UploadResource(curBucket))
}
}
object CmdaaApp {
def main(args: Array[String]): Unit = new CmdaaApp().run(args: _*)
}
这是执行上传的UploadResource的代码：
package org.research.service.s3.resource
import java.io.{FileInputStream, InputStream}
import com.google.gson.{Gson, GsonBuilder}
import javax.ws.rs.core.MediaType.APPLICATION_JSON
import javax.ws.rs._
import javax.ws.rs.core.Response
import javax.ws.rs.core.MediaType
import org.research.util.OptionSerializer
import org.research.s3.service.resource.s3Bucket
import org.glassfish.jersey.media.multipart.{FormDataParam,MultiPartFeature}
@Path("/file")
class UploadResource(currentBucket: s3Bucket) {
val gsonb = new GsonBuilder()
gsonb.registerTypeAdapter(classOf[Option[Any]], new OptionSerializer)
val gson = gsonb.create
@POST
@Path("upload")
@Produces(Array(APPLICATION_JSON))
@Consumes(Array(MediaType.MULTIPART_FORM_DATA))
// def uploadFile(): Response = {
def uploadFile(@FormDataParam("file") uploadedInputStream: InputStream): Response = {
/* Need code here to get a uuid for the file name
Then return the uuid if we have success and of course 200
*/
Response.ok.entity(currentBucket.upload("testName",uploadedInputStream,false)).build()
//Response.ok().build()
}
}
此代码引用了s3存储桶，但您不需要它。您只需用代码替换该调用，即可将传入的文件数据下载到常规文件中。 scala
答案 6 :(得分：0)
此异常错误的另一个可能原因是，当在参数上声明多个工厂时，Jersey只搜索与最后一个注释关联的工厂。 （请参见bug report）
在解决此问题之前，如果您使用的是BL以外的其他注释，则必须排在最后。
这有效：
@FormDataParam这不是：
@NotEmpty @FormDataParam("myParam") String myParam
答案 7 :(得分：0)
当我尝试上传文件时，我遇到了同样的问题。 我花了很多时间才找到解决问题的方法。
1。如果您更改了JAR文件的版本，则可能存在版本冲突！
清理工件/库并重建项目。
2。您还需要注册您的UploadFileService类：
register(MultiPartFeature.class);
register(UploadFileService.class);
希望它会帮助某人并节省您的时间。
答案 8 :(得分：0)
以防将来有人遇到此问题并遇到与我遇到的相同问题。确保您导入的注释来自正确的包。异常不会告诉您哪个参数有问题，它可能是任何一个参数。就我而言，我导入的是 javax.websocket.server.PathParam 而不是 javax.ws.rs.PathParam。
答案 9 :(得分：0)
如果您在为上传资源编写 Dropwizard 测试时遇到此错误，这是解决方案：
2.在应用文件中添加：
@Override
public void initialize(Bootstrap<ExampleConfiguration> bootstrap) {
bootstrap.addBundle(new MultiPartBundle());
}
ResourceExtension.builder()
.addResource(new FileResource())
.addProvider(new MultiPartFeature())
.build();