[英]Java Rest Api returns 404
I'm trying to create a restful service in my Java Application. 我正在尝试在Java应用程序中创建一个Restful服务。 So far i got a POJO, a Entitymanagement Class, a "Wrapper" and a Class to access the Data via Rest.
到目前为止,我有一个POJO,一个Entitymanagement类,一个“包装器”和一个可通过Rest访问数据的类。 I'm using a wildfly 10 and didn't add any dependencies (except for the hibernate).
我正在使用wildfly 10,并且未添加任何依赖项(休眠状态除外)。
POJO POJO
import java.sql.Date;
import java.util.List;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.ManyToMany;
import javax.persistence.OneToOne;;
@Entity
public class Event {
private static final long serialVersionUID = 2L;
@Id
@GeneratedValue
private int id;
private Date eventDate;
private double price;
@ManyToMany(fetch = FetchType.LAZY)
private List<Visitor> visitors;
@OneToOne
private Organisation orga;
private String name;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public Organisation getOrga() {
return orga;
}
public void setOrga(Organisation orga) {
this.orga = orga;
}
public Date getEventDate() {
return eventDate;
}
public void setEventDate(Date eventDate) {
this.eventDate = eventDate;
}
public double getPrice() {
return price;
}
public void setPrice(double price) {
this.price = price;
}
public List<Visitor> getVisitors() {
return visitors;
}
public void setVisitors(List<Visitor> visitors) {
this.visitors = visitors;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
Entity Management 实体管理
import java.util.List;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.TypedQuery;
import lele.core.entities.Event;
import lele.core.entities.Organisation;
@Stateless
public class Loader {
@PersistenceContext
private EntityManager em;
public List<Event> getAllEvents()
{
TypedQuery<Event> query = em.createQuery("select e from Event e", Event.class);
return query.getResultList();
}
Wrapper 包装纸
import java.util.List;
import javax.xml.bind.annotation.XmlRootElement;
import lele.core.entities.Event;
@XmlRootElement(name="events")
public class EventWrapper {
private List<Event> list;
public EventWrapper() {
}
public List<Event> getList() {
return list;
}
public void setList(List<Event> list) {
this.list = list;
}
}
API- Class API类
@Path("/appmgr")
@Consumes({ "application/json" })
@Produces({ "application/json" })
public class Appmgr {
@EJB
private Loader ld;
@EJB
private Saver sv;
@GET
@Path("events")
@Produces("application/json")
public Response getEvents() {
EventWrapper wrapper = new EventWrapper();
wrapper.setList(ld.getAllEvents());
return Response.status(200).entity(wrapper).build();
}
Am I missing something? 我想念什么吗? Any help would be apreciated since it's my first time working on a Restful service.
由于这是我第一次使用Restful服务,因此将不胜感激。
Maybe it's a configuration Error...? 也许是配置错误...?
Edit: 编辑:
Rest Services are already active but dont work: 休息服务已处于活动状态,但不起作用:
You need to add JAX-RS activator class or configure web app in web.xml descriptor. 您需要添加JAX-RS激活器类或在web.xml描述符中配置Web应用程序。 App Server needs to know that should look for JAX-RS annotaded classes and for which urls should bind them.
App Server需要知道应该查找带有JAX-RS注释的类,以及应将其绑定到哪些url。
Activator is the simplest solution. 激活器是最简单的解决方案。 Just add the following class to your app:
只需将以下类添加到您的应用中:
@ApplicationPath("/rest")
public class JaxRsActivator extends Application {
/* class body intentionally left blank */
}
Second solution is to activate RESTful endpoints in your web.xml. 第二种解决方案是在web.xml中激活RESTful端点。 You need to add following to your web.xml:
您需要在web.xml中添加以下内容:
<servlet-mapping>
<servlet-name>javax.ws.rs.core.Application</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
More on this for example here: https://docs.jboss.org/author/display/WFLY8/JAX-RS+Reference+Guide 有关更多信息,例如: https : //docs.jboss.org/author/display/WFLY8/JAX-RS+Reference+Guide
And one more tip: be sure that you are using proper URL to your service. 还有一个提示:确保您使用正确的服务URL。 In config above will look like this: WAR_NAME/rest/appmgr/....
在上面的配置中将如下所示:WAR_NAME / rest / appmgr / ....
Solution: 解:
Edit web.xml and add dependencies in pom.xml: 编辑web.xml并在pom.xml中添加依赖项:
web.xml web.xml中
<web-app version="3.1"
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
metadata-complete="false">
<servlet>
<servlet-name>Jersey Web Application</servlet-name>
<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Jersey Web Application</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
</web-app>
pom.xml 的pom.xml
<dependencies>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>7.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>4.3.0.Final</version>
</dependency>
<dependency>
<groupId>asm</groupId>
<artifactId>asm</artifactId>
<version>3.3.1</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-bundle</artifactId>
<version>1.19</version>
</dependency>
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20140107</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-server</artifactId>
<version>1.19</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-core</artifactId>
<version>1.19</version>
</dependency>
</dependencies>
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.