Question

我是网络服务的新手，我正在开发一个文档管理系统，并尝试使用Jersey restful web服务保存文件和多个对象。

import java.awt.Image;
import java.io.InputStream;
import java.util.List;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

import com.sasianet.dmsservice.data.dao.UserDocumentDao; 
import com.sasianet.dmsservice.data.entity.UserDocument; 
import com.sasianet.dmsservice.data.entity.UserDocumentAttachment;
import com.sun.jersey.core.header.FormDataContentDisposition;
import com.sun.jersey.multipart.FormDataParam;

@Path("/userDocument")
public class UserDocumentService {

    @GET 
    @Produces(MediaType.APPLICATION_JSON)
    public List<UserDocument> findAll(){
        List<UserDocument> userDocuments = null;
        try{ 
            UserDocumentDao udo = new UserDocumentDao();
            userDocuments = udo.findAll(); 
        }catch(Exception e){
            e.printStackTrace();
        }
        return userDocuments;
    }

    @POST
    @Path("/post/test")
    @Consumes({MediaType.MULTIPART_FORM_DATA})
    public Response uploadFileWithData(
            @FormDataParam("file") InputStream fileInputStream,
            @FormDataParam("file") FormDataContentDisposition cdh,
            @FormDataParam("userDoc") UserDocument userDocument,
            @FormDataParam("attachment") UserDocumentAttachment userDocumentAttachment) throws Exception{

        Image img = ImageIO.read(fileInputStream);
        JOptionPane.showMessageDialog(null, new JLabel(new ImageIcon(img)));
        System.out.println(cdh.getName());
        System.out.println(userDocument.getDescription());
        System.out.println(userDocumentAttachment.getAttachmentName());

        return Response.ok("Cool Tools!").build();
    }   
}

我的web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    id="WebApp_ID" metadata-complete="true" version="3.0">
    <display-name>DMSService</display-name>
    <servlet>
        <servlet-name>Jersey REST Service</servlet-name>
        <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
        <init-param>
            <param-name>jersey.config.server.provider.packages</param-name>
            <param-value>com.sasianet.dmsservice, com.fasterxml.jackson.jaxrs.json,com.jersey.jaxb</param-value>
        </init-param>  
    </servlet>
    <servlet-mapping>
        <servlet-name>Jersey REST Service</servlet-name>
        <url-pattern>/rest/*</url-pattern>
    </servlet-mapping>
    <context-param>
        <param-name>jersey.media.type.mappings</param-name>
        <param-value>json : application/json, xml : application/xml</param-value>
    </context-param> 

</web-app>

运行此服务后，我遇到了以下错误

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.sasianet.dmsservice.service.UserDocumentService.uploadFileWithData(java.io.InputStream,com.sun.jersey.core.header.FormDataContentDisposition,com.sasianet.dmsservice.data.entity.UserDocument) throws java.lang.Exception 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.sasianet.dmsservice.service.UserDocumentService, handlerConstructors=[org.glassfish.jersey.server.model.HandlerConstructor@53d69bbb]}, definitionMethod=public javax.ws.rs.core.Response com.sasianet.dmsservice.service.UserDocumentService.uploadFileWithData(java.io.InputStream,com.sun.jersey.core.header.FormDataContentDisposition,com.sasianet.dmsservice.data.entity.UserDocument) throws java.lang.Exception, parameters=[Parameter [type=class java.io.InputStream, source=file, defaultValue=null], Parameter [type=class com.sun.jersey.core.header.FormDataContentDisposition, source=file, defaultValue=null], Parameter [type=class com.sasianet.dmsservice.data.entity.UserDocument, source=emp, defaultValue=null]], responseType=class javax.ws.rs.core.Response}, nameBindings=[]}', [WARNING] A resource, Resource{"/file", 0 child resources, 0 resource methods, 0 sub-resource locator, 0 method handler classes, 0 method handler instances}, with path "/file" is empty. It has no resource (or sub resource) methods neither sub resource locators defined.; source='Resource{"/file", 0 child resources, 0 resource methods, 0 sub-resource locator, 0 method handler classes, 0 method handler instances}']

项目库

所以，我找不到任何解决方案，是否有任何不同的方式上传文件与多个对象与一个休息呼叫。

请指导我。

Answer 1

您使用的是错误的版本多部分依赖项。无论何时你在包中看到com.sun.jersey，都是针对Jersey 1.x的，你不应该将它用于2.x项目。您需要切换版本，然后注册MultiPartFeature。有关详细信息，请参阅MULTIPART_FORM_DATA: No injection source found for a parameter of type public javax.ws.rs.core.Response
除非客户端能够为每个正文部分设置Content-Type（某些客户端不能），否则您需要稍微调整一下该方法，以便将结果作为对象。例如
```
public Response post(@FormDataParam("doc") FormDataBodyPart docpart) {
    docpart.setMediaType(MediaType.APPLICATION_JSON_TYPE);
    UserDocument doc = docpart.getValueAs(UserDocument.class);
}
```
对于InputStream参数，您不需要这样做。有关详细信息，请参阅File upload along with other object in Jersey restful web service

Jersey restful web服务 - 使用多个对象

1 个答案: