[英]Jersey Maven configuration
I am trying to setup a Jersey RESTful service, the problem is that I am getting the following error when trying to do GET request to the following API: http://localhost:8080/GroupAppServer/api/status
: 我正在尝试设置Jersey RESTful服务,问题是尝试对以下API进行GET请求时遇到以下错误:
http://localhost:8080/GroupAppServer/api/status
:
com.sun.jersey.api.container.ContainerException: The ResourceConfig instance does not contain any root resource classes.
Here is my web.xml file: 这是我的web.xml文件:
<?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"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<display-name>GroupAppServer</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>jersey-servlet</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>GroupAppServer</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>jersey-servlet</servlet-name>
<url-pattern>/api/*</url-pattern>
</servlet-mapping>
</web-app>
under src I have a package called "com.groupappserver.api" which holds my Status
class. 在src下,我有一个名为“ com.groupappserver.api”的程序包,其中包含我的
Status
类。 Here is the code: 这是代码:
package com.groupappserver.api;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import com.groupservice.utils.Response;
@Path("/status")
public class Status
{
@GET
@Produces(MediaType.APPLICATION_JSON)
public Response getStatus()
{
return new Response();
}
}
Here is my pom.xml: 这是我的pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>GroupAppServer</groupId>
<artifactId>GroupAppServer</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.3</version>
<configuration>
<warSourceDirectory>WebContent</warSourceDirectory>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-server</artifactId>
<version>1.18.1</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-core</artifactId>
<version>1.18.1</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-servlet</artifactId>
<version>1.18.1</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.3</version>
</dependency>
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20140107</version>
</dependency>
</dependencies>
</project>
Any ideas why I am getting this error? 任何想法为什么我会收到此错误? and how can I fix this?
我该如何解决?
Jersey servlet in your web.xml is misconfigured. 您的web.xml中的Jersey servlet配置错误。
This servlet parameter should contain valid package name of your JAX-RS resource classes package: 此servlet参数应包含您的JAX-RS资源类软件包的有效软件包名称:
<init-param>
<param-name>com.sun.jersey.config.property.packages</param-name>
<param-value>GroupAppServer</param-value>
</init-param>
In your case the package name should be com.groupappserver.api
and not the value GroupAppServer
you've specified. 在您的情况下,程序包名称应为
com.groupappserver.api
而不是您指定的值GroupAppServer
。
Also, you can add a new class with extends javax.ws.rs.core.Application and overwrite the method getClasses . 另外,您可以添加具有扩展javax.ws.rs.core.Application的新类,并覆盖方法getClasses 。
Put your com.groupappserver.api.Status class into the Set returned by getClasses : 将您的com.groupappserver.api.Status类放入getClasses返回的Set中:
package com.groupappserver.api;
@ApplicationPath("/*")
public class ApplicationConfig extends javax.ws.rs.core.Application {
private final Set<Class<?>> classes;
public ApplicationConfig() {
final Set<Class<?>> _classes = new HashSet<>();
_classes.add(Status.class);
classes = Collections.unmodifiableSet(_classes);
}
@Override
public Set<Class<?>> getClasses() {
return classes;
}
}
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