如何解析资源在 Restful Web Service 中不可用

Question

我用POST方法创建了一个REST Webservice 'JSONService'(使用Jersey实现JAX-RS(，并创建了'JerseyClientPost'。我想要实现的是从我的泽西客户端帖子发送一个帖子。将所有值放入"播放器"对象中，并随响应一起发送回去。但是在尝试从邮递员发送 POST 请求时，它会抛出

HTTP Status 404 - Not Found, The requested resource is not available.

任何解决此问题的指示将不胜感激？

请求网址 ： http://localhost:8080/WeekendSoccer/test/register/create

以下是我的环境详细信息：JDK 1.7.0_79，雄猫服务器 v7.0，泽西岛 (jaxrs-ri-2.25.1(，网络.xml

下面给出了 REST 资源

package webService;
import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.ResponseBuilder;
import dto.RegisterPlayer;
@Path("/register")
public class JSONService {
    @POST
    @Path("/create")
    @Produces(MediaType.APPLICATION_JSON)
    @Consumes(MediaType.APPLICATION_JSON)
    public Response createPlayerInJSON(RegisterPlayer player) {     
        String result = "Player Created : " +player;
        return Response.status(201).entity(result).build();     
    }
}

以下是泽西岛客户帖子

package dao;
import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.Entity;
import javax.ws.rs.client.Invocation;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import com.google.gson.JsonArray;
import com.google.gson.JsonObject;
public class JerseyClientPost {
    public static void main(String[] args) {
        try {
            RegisterPlayer player = new RegisterPlayer();
            player.setName("Link");
            player.setEmail("[e-mail]");
            player.setCompany("Test Ltd");  
            Client client = ClientBuilder.newClient(new ClientConfig().register( LoggingFilter.class ));
            WebTarget webTarget 
              = client.target("http://localhost:8080/WeekendSoccer/test");
            WebTarget playerWebTarget 
              = webTarget.path("/register/create");
            Invocation.Builder invocationBuilder 
              = playerWebTarget.request(MediaType.APPLICATION_JSON);
            Response response 
              = invocationBuilder
              .post(Entity.entity(player,MediaType.APPLICATION_JSON));          
            if (response.getStatus() != 201) {
                throw new RuntimeException("Failed : HTTP error code : "
                   + response.getStatus());
            }
            System.out.println(response.getStatus());
            System.out.println(response.readEntity(String.class));          

          } catch (Exception e) {
            e.printStackTrace();
          }
        }
}

RegisterPlayer 模型类与 getter、setter

public class RegisterPlayer implements Serializable{    
    private String name;
    private String email;
    private String company; 
    public RegisterPlayer()
    {
    }
    public RegisterPlayer(String name, String email, String company)
    {
    super();
    this.name = name;
    this.email = email;
    this.company = company;
    }    
    public String getName()
    {
    return name;
    }
    public void setName(String name)
    {
    this.name = name;
    }
     ....
     }

网络.xml

<?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>WeekendSoccer</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>Register Service</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
    <param-name>jersey.config.server.provider.packages</param-name>
    <param-value>webService</param-value>        
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Register Service</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>JSON Service</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
    <param-name>jersey.config.server.provider.packages</param-name>
    <param-value>dao</param-value>        
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>JSON Service</servlet-name>
<url-pattern>/test/*</url-pattern>
</servlet-mapping>
</web-app>

列出所有罐子

aopalliance-repackaged-2.5.0-b32.jar
gson-2.2.2.jar
hk2-api-2.5.0-b32.jar
hk2-locator-2.5.0-b32.jar
hk2-utils-2.5.0-b32.jar
jackson-annotations-2.3.2.jar
jackson-core-2.3.2.jar
jackson-databind-2.3.2.jar
jackson-jaxrs-base-2.3.2.jar
jackson-jaxrs-json-provider-2.3.2.jar
jackson-module-jaxb-annotations-2.3.2.jar
javassist-3.20.0-GA.jar
javax.annotation-api-1.2.jar
javax.inject-2.5.0-b32.jar
javax.servlet-api-3.0.1.jar
javax.ws.rs-api-2.0.1.jar
jaxb-api-2.2.7.jar
jersey-client.jar
jersey-common.jar
jersey-container-servlet-core.jar
jersey-container-servlet.jar
jersey-entity-filtering-2.17.jar
jersey-guava-2.25.1.jar
jersey-media-jaxb.jar
jersey-media-json-jackson-2.17.jar
jersey-server.jar
mysql-connector-java-5.1.40-bin.jar
org.osgi.core-4.2.0.jar
osgi-resource-locator-1.0.1.jar
persistence-api-1.0.jar
validation-api-1.1.0.Final.jar

Answer 1

首先，我从未测试过您的客户端代码，但我想您的问题是关于服务器端并在 Postman 中测试的。 您应该在pojo类RegisterPlayer中添加@XmlRootElement注释，如下所示：

@XmlRootElement
public class RegisterPlayer implements Serializable{    
    private String name;
    private String email;
    private String company; 
    public RegisterPlayer()
    {
    }
    public RegisterPlayer(String name, String email, String company)
    {
    super();
    this.name = name;
    this.email = email;
    this.company = company;
    }

并在 POM 中添加了这些依赖项.xml

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-core</artifactId>
    <version>2.9.3</version>
</dependency>
  <!-- https://mvnrepository.com/artifact/org.codehaus.jackson/jackson-mapper-asl -->
<dependency>
    <groupId>org.codehaus.jackson</groupId>
    <artifactId>jackson-mapper-asl</artifactId>
    <version>1.9.13</version>
</dependency>

如果你已经有这些罐子，那就好了。它现在对我有用。我希望它对你有帮助。

jackson-core-2.9.3.jar
jackson-mapper-asl-1.9.13.jar
jackson-core-asl-1.9.13.jar
asm-3.3.1.jar
jersey-bundle-1.19.4.jar
jsr311-api-1.1.1.jar
json-20170516.jar
jersey-server-1.19.4.jar
jersey-core-1.19.4.jar
jersey-multipart-1.19.4.jar
mimepull-1.9.3.jar
jackson-annotations-2.7.0.jar
jackson-databind-2.7.0.jar

Answer 2

我仍然不确定，为什么你在 web 中有以下映射.xml ？因为没有任何与此 servlet 名称关联的 servlet 类。您应该删除它们

<servlet-mapping>
<servlet-name>JSON Service</servlet-name>
<url-pattern>/test/*</url-pattern>
</servlet-mapping>

我看到您有以下条目，并且它们确实具有关联的 servlet 类。

<servlet-mapping>
   <servlet-name>Register Service</servlet-name>
   <url-pattern>/rest/*</url-pattern>
</servlet-mapping>

这意味着，您的目标网址应该是

http://localhost:8080/WeekendSoccer/rest/register/create

而不是

http://localhost:8080/WeekendSoccer/test/register/create