我使用JAX-RS。我有一个Maven项目和Tomcat服务器。我用路径/ books java类。我也使用jersey 1.x。在Tomcat控制台中，我可以看到我的应用程序已部署。
网址http://localhost:8080/rest-server可以正常工作，但是当我执行网址时
http://localhost:8080/rest-server/books
我得到了错误
HTTP 404
The origin server did not find a current representation for the target resource or is not willing to disclose that one exists.
这是我的web.xml文件
在我定义的web.xml中
<url-pattern>/rest-server/*</url-pattern>
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1">
<display-name>rest-server</display-name>
<servlet>
<servlet-name>Test Jersey Service</servlet-name>
<!-- For Jersey 1.x -->
<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
<!-- For Jersey 2.x -->
<!-- <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class> -->
<init-param>
<!-- For Jersey 1.x -->
<param-name>com.sun.jersey.config.property.packages</param-name>
<!-- For Jersey 2.x -->
<!-- <param-name>jersey.config.server.provider.packages</param-name> -->
<param-value>com.readlearncode.dukesbookshop.restserver.rest</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Test Jersey Service </servlet-name>
<url-pattern>/rest-server/*</url-pattern>
</servlet-mapping>
</web-app>
这是我的pom.xml
在pom.xml中
<name>rest-server</name>
<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>
<parent>
<groupId>com.readlearncode</groupId>
<artifactId>dukesbookshop</artifactId>
<version>1.0-SNAPSHOT</version>
</parent>
<artifactId>rest-server</artifactId>
<packaging>war</packaging>
<name>rest-server</name>
<url>http://localhost:8080</url>
<properties>
<endorsed.dir>${project.build.directory}/endorsed</endorsed.dir>
<java.version>1.8</java.version>
<javaee-api.version>7.0</javaee-api.version>
</properties>
<dependencies>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>${javaee-api.version}</version>
</dependency>
<dependency>
<groupId>javax.activation</groupId>
<artifactId>activation</artifactId>
<version>1.1.1</version>
</dependency>
<!-- For Jersey 1.x -->
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-server</artifactId>
<version>1.19</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-servlet</artifactId>
<version>1.19</version>
</dependency>
</dependencies>
<build>
<finalName>rest-server</finalName>
<plugins>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
<configuration>
<url>http://localhost:8080/manager/text</url>
<path>/rest-server</path>
<!-- Set update to true to avoid exist war package can not be override error -->
<update>true</update>
<!-- Because deploy this maven project using plugin in pom so use the manager-script role user. -->
<username>tomcat</username>
<password>tomcat</password>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.6.0</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
<compilerArguments>
<endorseddirs>${endorsed.dir}</endorseddirs>
</compilerArguments>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>3.0.0</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
<filteringDeploymentDescriptors>true</filteringDeploymentDescriptors>
</configuration>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.18.1</version>
<configuration>
<skipTests>true</skipTests>
<systemPropertyVariables>
<!-- This is needed to tell the unit tests which profile we are running. -->
</systemPropertyVariables>
</configuration>
</plugin>
</plugins>
</build>
</project>
这是我的Java服务
此类具有@Path / books
package com.readlearncode.dukesbookshop.restserver.rest;
import javax.ejb.EJB;
import javax.ejb.Stateless;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.GenericEntity;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import java.util.List;
import java.util.Optional;
import javax.annotation.*;
import com.readlearncode.dukesbookshop.restserver.domain.Book;
import com.readlearncode.dukesbookshop.restserver.infrastructure.BookRepository;
/**
* @author Alex Theedom www.readlearncode.com
* @version 1.0
*/
@Stateless
@Path("/books")
public class BookResource {
@EJB
private BookRepository bookrepository;
@GET
@Produces(MediaType.APPLICATION_JSON)
public Response getAllBooks() {
List<Book> books = bookrepository.getAll();
GenericEntity<List<Book>> bookWrapper = new GenericEntity<List<Book>>(books) {};
return Response.ok(bookWrapper).build();
}
@POST
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.APPLICATION_JSON)
public Response saveBook(final Book book) {
Book persistedBook = bookrepository.saveBook(book);
return Response.ok(persistedBook).build();
}
@GET
@Produces(MediaType.APPLICATION_JSON)
@Path("{isbn:\\d{9}[\\d:X]$}")
public Response getBookbyIsbn(final @PathParam("isbn") String isbn) {
Optional<Book> book = bookrepository.getByISBN(isbn);
if (book.isPresent()) {
return Response.ok(book.get()).build();
}
return Response.noContent().build();
}
}