Question

我开发了一个消息传递EJB应用程序及其使用WILDFLY 9服务器的服务。现在应用程序正在运行，数据库功能齐全，我正在尝试为此应用程序开发REST Web服务。所以我创建了我的RestActivator：

package tn.carmate.webservice;
import javax.ws.rs.ApplicationPath;
import javax.ws.rs.core.Application;


@ApplicationPath("rest")
public class RestActivator extends Application {

}

和我的messageRessources.java如下

package tn.carmate.webservice;

import java.util.List;

import javax.ejb.EJB;
import javax.enterprise.context.RequestScoped;
import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;

import tn.esprit.pi.Services.Services;
import tn.esprit.pi.persistance.Message;

@Path("message")
@RequestScoped
public class MessageRessource {

    @EJB
    Services servicemessage;

    @GET
    @Produces(MediaType.APPLICATION_JSON)
    @Path("{idreceiver}")
    public Response getMessageList(@QueryParam(value = "idreceiver") int idReceiver) {

        List<Message> message = servicemessage.getMessageList(idReceiver);
        return Response.status(Status.OK).entity(message).build();

    }

    @POST
    @Consumes(MediaType.APPLICATION_JSON)
    @Path("{idSrc/idDest/content}")
    public Response sendMessage(@QueryParam(value = "idSrc") int idSrc, @QueryParam(value = "idDest") int idDest,
            @QueryParam(value = "content") String content) {

        servicemessage.sendMessage(idSrc, idDest, content);
        return Response.status(Status.OK).build();
    }

    @DELETE
    @Path("{idm}")
    public Response deleteMessage(@QueryParam(value = "idm") int id) {
        servicemessage.deleteMessage(id);
        return Response.status(Status.OK).build();

    }

    @GET
    @Produces(MediaType.APPLICATION_JSON)
    @Path("{idSender/idReceiver}")
    public Response getConversation(@QueryParam(value = "idSender") int idSender,
            @QueryParam(value = "idReceiver") int idReceiver) {
        List<Message> conversion = servicemessage.getConversation(idSender, idReceiver);
        return Response.status(Status.OK).entity(conversion).build();

    }


    @GET
    @Produces(MediaType.APPLICATION_JSON)
    @Path("{idR}")
    public Response returnInbox (@QueryParam(value = "idR")int idR){
        List<Message> listmessage = servicemessage.returnInbox(idR);
        return Response.status(Status.OK).entity(listmessage).build();
    }


    @DELETE
    @Path("{idc}")
    public Response deleteConversation(@QueryParam(value = "idc")int id){
        servicemessage.deleteConversation(id);
        return Response.status(Status.OK).build();
    }


}

但每当我尝试使用像这样的服务时，我都会收到此错误：

这是消息实体

package tn.esprit.pi.persistance;

import java.io.Serializable;
import java.lang.String;
import java.util.Date;
import javax.persistence.*;





/**
 * Entity implementation class for Entity: Message
 *
 */
@Entity(name="message")

public class Message implements Serializable {

/*     @EmbeddedId
    private MessageId Id; 
    */
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private int id;



    private String object;
    private String content;

    @Temporal(TemporalType.TIMESTAMP)
    private Date dateEmission;

    @ManyToOne
    private User sender;

    @ManyToOne
    private User receiver;


    private static final long serialVersionUID = 1L;



    public Message(User src, User dest, String content) {
        this.sender = src;
        this.receiver = dest;
        this.content = content;
        this.dateEmission = new Date();
    }

    public Message() {
        super();
    }


/*  public MessageId getId() {
        return Id;
    }public void setId(MessageId id) {
        Id = id;
    }  
    */

    public int getIdMessage() {
        return this.id;
    }


    public String getObject() {
        return this.object;
    }

    public void setObject(String object) {
        this.object = object;
    }

    public User getReceiver() {
        return this.receiver;
    }

    public void setReceiver(User reciver) {
        this.receiver = reciver;
    }

    public User getSender() {
        return this.sender;
    }

    public void setSender(User sender) {
        this.sender = sender;
    }

    public String getContent() {
        return this.content;
    }

    public void setContent(String content) {
        this.content = content;
    }   
    public Date getDateEmission() {
        return this.dateEmission;
    }

    public void setDateEmission(Date dateEmission) {
        this.dateEmission = dateEmission;
    }

}

Answer 1

仔细检查您的网址，我认为应该是 http://localhost:8080不是http://localhost:18080。只是一个错误的错误。

其次，将restful服务的应用程序基本路径设置为rest 所以网址应该是的 http://localhost:8080/CarMate-web/rest/message?idreceiver=1

最后，idreceiver是查询参数，但@Path（“{idreceiver}”）将其视为路径参数。

所以，在http://localhost:8080/CarMate-web/rest/message?idreceiver=1 Rest端点期望在/ message / {idreceiver}？idreceiver = 1之后的路径变量，如@Leonardo在评论中所述。

我会建议以下列出的任何解决方案：

从方法
中删除@Path
@GET @Produces(MediaType.APPLICATION_JSON) public Response getMessageList(@QueryParam(value = "idreceiver") int idReceiver) { List<Message> message = servicemessage.getMessageList(idReceiver); return Response.status(Status.OK).entity(message).build(); }

并使用以下网址：http://localhost:8080/CarMate-web/rest/message?idreceiver=1

或将@Path（“{idreceiver}”）更改为@Path（“idreceiver”）

@GET @Produces(MediaType.APPLICATION_JSON) @Path("idreceiver") public Response getMessageList(@QueryParam(value = "idreceiver") int idReceiver) { List<Message> message = servicemessage.getMessageList(idReceiver); return Response.status(Status.OK).entity(message).build(); }

并使用以下网址：http://localhost:8080/CarMate-web/rest/message/idreceiver?idreceiver=1

在EJB上使用REST时出现404 Not Found错误

1 个答案: