如何在没有web.xml的情况下实现jaxrs Application [英] How to implement jaxrs Application without web.xml

问题描述

我正在尝试部署一个非常简单的jaxrs应用程序而没有web.xml配置，并且无法使其正常工作。我希望访问的URL是serverandport / {appname} / rest / welcome / hello，我想我必须遗漏一些显而易见的东西。

I am trying to deploy a really simple jaxrs application with without a web.xml config and cannot get it working. My URL I'd expect to access is serverandport/{appname}/rest/welcomes/hello and I think I must be missing something dead obvious.

应用程序

@ApplicationPath("/rest")
public class EngineApp extends Application {

    @Override
    public Set<Class<?>> getClasses() {
        Set<Class<?>> s = new HashSet<Class<?>>();
        s.add(RestTestImpl.class);
        return s;
    }

}

资源

@Path("/welcomes")
public class RestTestImpl {
    @GET
    @Path("hello")
    public String sayPlainHello() {
        return "Hi from Rest";
    }
}

POM片段

<groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-war-plugin</artifactId>
    <version>2.1.1</version>
    <configuration>
        <failOnMissingWebXml>false</failOnMissingWebXml>
    </configuration>

编辑：在下面的响应中，我尝试使用空的web.xml并使用以下内容web.xml中。打扰也会返回404，但是下面的xml表示Servlet javax.ws.rs.core.Application不可用：

Further to the response below, I tried with an empty web.xml and also with the following web.xml. Bother also return 404, however the xml below states "Servlet javax.ws.rs.core.Application is not available":

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    version="3.0"
    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_2_5.xsd" >
    <servlet> 
        <servlet-name>javax.ws.rs.core.Application</servlet-name> 
        <load-on-startup>1</load-on-startup> 
    </servlet> 
    <servlet-mapping>
        <servlet-name>javax.ws.rs.core.Application</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>

</web-app>

推荐答案

您需要将应用程序部署到符合Servlet 3.0的版本中容器以利用此功能。尝试 GlassFish 3.x 或 Tomcat 7 。

You need to deploy your application into a Servlet 3.0 compliant container to take advantage of this functionality. Try GlassFish 3.x or Tomcat 7.

这篇关于如何在没有web.xml的情况下实现jaxrs Application的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！