Question

我正在尝试使用Jackson的@JsonDeserialize(builder = class)注释示例来允许构建器模式。我试图使用我的对象，但一直遇到错误。然后我从杰克逊网页上复制了这个例子，但它仍然没有用。这是我的示例文件：

数据项

package org.cpicard.finance;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;

@JsonDeserialize(builder=ExampleBuilder.class)
public class Example {
   private final int x, y;
   protected Example(int x, int y) {
      this.x = x;
      this.y = y;
   }
}

生成器

package org.cpicard.finance;
public class ExampleBuilder {
   private int x, y;
   public ExampleBuilder () { }

   public ExampleBuilder withX(int x) {
      this.x = x;
      return this;
   }
   public ExampleBuilder withY(int y) {
      this.y = y;
      return this;
   }

   public Example build() {
      return new Example(x, y);
   }
}

休息服务

package org.cpicard.finance;

import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

import org.cpicard.model.finance.Example;

@Path("/account")
public class AccountService {

   @POST
   @Consumes(MediaType.APPLICATION_JSON)
   @Path("test1")
   public Response createAccount1(final Example account) {
      System.out.println(account.toString());
      return Response.ok().build();
   }
}

应用程序配置

package org.cpicard.finance;

import java.util.Collections;
import java.util.HashSet;
import java.util.Set;

import javax.ws.rs.ApplicationPath;
import javax.ws.rs.core.Application;

@ApplicationPath("/rs")
public class ApplicationConfig extends Application {

   private final Set<Class<?>> classes;

   public ApplicationConfig() {
      final HashSet<Class<?>> c = new HashSet<>();
      c.add(AccountService.class);

      classes = Collections.unmodifiableSet(c);
   }

   @Override
   public Set<Class<?>> getClasses() {
      return classes;
   }
}

Web xml代码段

<servlet>
    <servlet-name>Jersey REST Service</servlet-name>
    <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
    <init-param>
        <param-name>javax.ws.rs.Application</param-name>
        <param-value>org.cpicard.finance.ApplicationConfig</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
 </servlet>
 <servlet-mapping>
    <servlet-name>Jersey REST Service</servlet-name>
    <url-pattern>/rs/*</url-pattern>
 </servlet-mapping>

这会导致以下错误：

[2015-03-01T10：30：19.576-0700] [glassfish 4.1] [SEVERE] [] [org.glassfish.jersey.message.internal.ReaderInterceptorExecutor] [tid：_ThreadID = 31 _ThreadName = http-listener-1（4）] [timeMillis： 1425231019576] [levelValue：1000] [[未找到MessageBodyReader media type = application / json，type = class org.cpicard.model.finance.Example，genericType = class org.cpicard.model.finance.Example。]]

当我将数据项切换到具有常规getter和setter的标准对象时，它可以正常工作。我认为我的配置有些不正确，但不确定它可能是什么。

使用Glassfish 4.1

Jackson Builder Pattern导致找不到消息Body Reader

0 个答案: