java - Rest 服务出现 404 错误 - Jersey/tomcat8

Question

过去几天我一直在用很多例子尝试这个，我无法让 REST 服务运行。我有 tomcat8(Ubuntu 14.x)/Jersey。有什么想法吗？

pom.xml 片段

<dependencies>
    <dependency>
        <groupId>javax.ws.rs</groupId>
        <artifactId>jsr311-api</artifactId>
        <version>1.1.1</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-server</artifactId>
        <version>1.18.1</version>
    </dependency>
    <dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-servlet</artifactId>
        <version>1.18.1</version>
    </dependency>
</dependencies>

web.xml 片段

 <servlet>
    <servlet-name>RestService</servlet-name>
    <!--servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class-->
<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
             <init-param>
        <param-name>com.sun.jersey.config.property.packages</param-name>
<!--param-name>jersey.config.server.provider.packages</param-name-->
        <param-value>mail.service</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>RestService</servlet-name>
    <url-pattern>/rest/*</url-pattern>
  </servlet-mapping>

tomcat 启动时没有错误:

11-Jul-2015 11:23:08.327 INFO [localhost-startStop-8] com.sun.jersey.server.impl.application.WebApplicationImpl._initiate Initiating Jersey application, version 'Jersey: 1.18.1 02/19/2014 03:28 AM' 11-Jul-2015 11:23:08.795 INFO [localhost-startStop-8] org.apache.catalina.startup.HostConfig.deployWAR Deployment of web application archive /home/apcuser/tomcat8/apache-tomcat-8.0.24/webapps/ExProcess.war has finished in 1,488 ms

休息服务类:

package mail.service;

import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Request;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;
import javax.xml.bind.JAXBElement;

//import org.slf4j.Logger;
//import org.slf4j.LoggerFactory;

@Path("restservice")
public class RestService {
        @Context
        UriInfo uriInfo;
        @Context
        Request request;
        String id;

        @GET
        @Path("{name}")
        public String sayHello(@PathParam("name") String name){
            return "Hello " + name;
        }

}

结果:

HTTP Status 404 - /rest/restservice/TestName

更新:我不知道我的项目有什么问题，只是从头开始:http://javabrains.koushik.org/courses/javaee_jaxrs/lessons/Setting-Up现在可以使用了。

Answer 1

@Path("/restservice")
public class RestService {
        @Context
        UriInfo uriInfo;
        @Context
        Request request;
        String id;

        @GET
        @Path("/{name}")
        @Produces(MediaType.TEXT_PLAIN)
        public String sayHello(@PathParam("name") String name){
            return "Hello " + name;
        }

}

http 404 是文件未找到错误，您收到此错误是因为您没有将 / 附加到 @Path 注释值。

@Path("restservice") 应该是 @Path("/restservice") 和 @Path("{name}") 应该是 @Path("/{name}")

编辑更新-

添加了@Produces(MediaType.TEXT_PLAIN)