jersey restful webservice 资源未找到错误

Question

我正在使用 jersey restful webservice + hibernate 框架和 maven java 项目制作一个注册页面。 报名班级：

package com.data;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Entity;
@Entity
public class Registration {

@Id @GeneratedValue(strategy=GenerationType.AUTO)
private int id;
private String fristName;
private String lastName;
private String email;
private String password;
private String rePassword;
public int getId() {
    return id;
}
public void setId(int id) {
    this.id = id;
}
public String getFristName() {
    return fristName;
}
public void setFristName(String fristName) {
    this.fristName = fristName;
}
public String getLastName() {
    return lastName;
}
public void setLastName(String lastName) {
    this.lastName = lastName;
}
public String getEmail() {
    return email;
}
public void setEmail(String email) {
    this.email = email;
}
public String getPassword() {
    return password;
}
public void setPassword(String password) {
    this.password = password;
}
public String getRePassword() {
    return rePassword;
}
public void setRePassword(String rePassword) {
    this.rePassword = rePassword;
}
}

注册服务类：

package com.dao;
import java.util.ArrayList;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import com.data.Registration;
public class RegistrationService {

private SessionFactory sessionFactory = null;

public Registration adddNewUser(Registration newUser){

    try{
        sessionFactory = new Configuration().configure().buildSessionFactory();
        Session session = sessionFactory.openSession();
        session.beginTransaction();
        session.save(newUser);
        session.getTransaction().commit();
        session.close();
    }catch(Exception ex){
        ex.printStackTrace();
    }

    return newUser;
}

@SuppressWarnings("unchecked")
public ArrayList<Registration> getUsers(){
    ArrayList<Registration> users = new ArrayList<Registration>();
    try{
        sessionFactory = new Configuration().configure().buildSessionFactory();
        Session session = sessionFactory.openSession();
        users = (ArrayList<Registration>) session.createCriteria(Registration.class).list();
        session.close();
    }catch(Exception ex){
        ex.printStackTrace();
    }
    return users;
}
}

RegistrationResource 类：

    package com.resource;
import java.util.ArrayList;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import com.dao.RegistrationService;
import com.data.Registration;
@Path("register")
public class RegistrationResource {

private RegistrationService registrationService = new RegistrationService();

@Path("new")
@POST
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
public Registration addNewUser(Registration newUser){
    return registrationService.adddNewUser(newUser);
}   

@GET
@Path("all")
@Produces(MediaType.APPLICATION_JSON)
public ArrayList<Registration> getAllUsers(){
    return registrationService.getUsers();
}
}

有人帮忙....... 请有人告诉我哪里有问题，我会感谢你... :)

Answer 1

你正在使用 Maven 和 pom 作为构建机制来构建你的应用程序。如果你的 restful 服务是一个 web 应用程序，那么你需要在 web.xml 中映射 restful 属性，否则 jersey 服务器将无法找到资源：

 <servlet>
            <servlet-name>jersey-serlvet</servlet-name>
            <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
            <init-param>
                <param-name>com.sun.jersey.config.property.packages</param-name>
                <param-value>com.resource</param-value>
            </init-param>
            <init-param>
                <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
                <param-value>true</param-value>
            </init-param>
            <load-on-startup>1</load-on-startup>
        </servlet>


    <!-- Servlet Mappings -->
            <servlet-mapping>
            <servlet-name>jersey-serlvet</servlet-name>
            <url-pattern>/register/*</url-pattern>
        </servlet-mapping>