Jersey 2.0相当于POJOMappingFeature

Question

我有使用泽西岛的经验＆lt; 2.0。现在我正在尝试构建一个war应用程序来提供JSON Webservice API。

我现在正在努力配置Moxy并且它的接缝比添加的更复杂

    <init-param>
        <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
        <param-value>true</param-value>
    </init-param>

返回泽西岛的web.xml＆lt; 2.0。

是否有可能只说“请添加json支持”？

目前我只是在服务器上没有任何日志条目时遇到很多内部服务器错误错误而只是想“我必须做一些完全错误的事情，这不会那么难”

任何人都可以给我一个提示吗？

Answer 1

请使用以下依赖关系，它会自动为您完成。

 <dependency>
        <groupId>com.fasterxml.jackson.jaxrs</groupId>
        <artifactId>jackson-jaxrs-json-provider</artifactId>
        <version>2.2.3</version>
   </dependency>

Answer 2

如果要在web.xml文件中定义它，请：

JACKSON：

<init-param>
  <param-name>jersey.config.server.provider.classnames</param-name>
  <param-value>org.glassfish.jersey.jackson.JacksonFeature</param-value>
</init-param>

MOXY

<init-param>
  <param-name>jersey.config.server.provider.classnames</param-name>
  <param-value>org.glassfish.jersey.moxy.json.MoxyFeature</param-value>
</init-param>

如果使用maven将以下依赖项添加到您的pom文件

JACKSON

<dependency>
    <groupId>org.glassfish.jersey.media</groupId>
    <artifactId>jersey-media-json-jackson</artifactId>
    <version>your jersey version</version>
</dependency>

MOXY

<dependency>
    <groupId>org.glassfish.jersey.media</groupId>
    <artifactId>jersey-media-moxy</artifactId>
    <version>your jersey version</version>
</dependency>

Answer 3

您可以通过JAX-RS MOXyJsonProvider类配置Application类来将EclipseLink MOXy配置为JSON绑定提供程序。

示例＃1

package org.example;

import java.util.*;
import javax.ws.rs.core.Application;
import org.eclipse.persistence.jaxb.rs.MOXyJsonProvider;

public class CustomerApplication  extends Application {

    @Override
    public Set<Class<?>> getClasses() {
        HashSet<Class<?>> set = new HashSet<Class<?>>(2);
        set.add(MOXyJsonProvider.class);
        set.add(CustomerService.class);
        return set;
    }

}

示例＃2

package org.example;

import java.util.*;
import javax.ws.rs.core.Application;
import org.eclipse.persistence.jaxb.rs.MOXyJsonProvider;

public class CustomerApplication  extends Application {

    @Override
    public Set<Class<?>> getClasses() {
        HashSet<Class<?>> set = new HashSet<Class<?>>(1);
        set.add(ExampleService.class);
        return set;
    }

    @Override
    public Set<Object> getSingletons() {
        MOXyJsonProvider moxyJsonProvider = new MOXyJsonProvider();

        moxyJsonProvider.setAttributePrefix("@");
        moxyJsonProvider.setFormattedOutput(true);
        moxyJsonProvider.setIncludeRoot(true);
        moxyJsonProvider.setMarshalEmptyCollections(false);
        moxyJsonProvider.setValueWrapper("$");

        Map<String, String> namespacePrefixMapper = new HashMap<String, String>(1);
        namespacePrefixMapper.put("http://www.example.org/customer", "cust");
        moxyJsonProvider.setNamespacePrefixMapper(namespacePrefixMapper);
        moxyJsonProvider.setNamespaceSeparator(':');

        HashSet<Object> set = new HashSet<Object>(1);
        set.add(moxyJsonProvider);
        return set;
    }

} 

了解更多信息

• http://blog.bdoughan.com/2012/05/moxy-as-your-jax-rs-json-provider.html
• http://blog.bdoughan.com/2013/06/moxy-is-new-default-json-binding.html

Answer 4

实际上，它只对我有用，省略了PojoMappingFeature参数。

转到：

http://localhost:8080/webapi/myresource/complexObject/foo

产生这个json：

{"name":"foo","value1":1374185178829,"value2":42}

的web.xml：

<?xml version="1.0" encoding="UTF-8"?>
<!-- This web.xml file is not required when using Servlet 3.0 container,
     see implementation details http://jersey.java.net/nonav/documentation/latest/jax-rs.html -->
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
    <servlet>
        <servlet-name>Jersey Web Application</servlet-name>
        <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
        <init-param>
            <param-name>jersey.config.server.provider.packages</param-name>
            <param-value>com.example</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Jersey Web Application</servlet-name>
        <url-pattern>/webapi/*</url-pattern>
    </servlet-mapping>
</web-app>

切入点：

package com.example;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

/**
 * Root resource (exposed at "myresource" path)
 */
@Path("myresource")
public class MyResource {

    /**
     * Method handling HTTP GET requests. The returned object will be sent
     * to the client as "text/plain" media type.
     *
     * @return String that will be returned as a text/plain response.
     */
    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String getIt() {
        return "Got it!";
    }

    @Path( "complexObject/{name}" )
    @GET
    @Produces( { MediaType.APPLICATION_JSON } )
    public ComplexObject complexObject( @PathParam( "name" ) String name ) {
        return new ComplexObject(name, System.currentTimeMillis(), 42L);
    }
}

bean to jsonize：

package com.example;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

/**
 * Root resource (exposed at "myresource" path)
 */
@Path("myresource")
public class MyResource {

    /**
     * Method handling HTTP GET requests. The returned object will be sent
     * to the client as "text/plain" media type.
     *
     * @return String that will be returned as a text/plain response.
     */
    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String getIt() {
        return "Got it!";
    }

    @Path( "complexObject/{name}" )
    @GET
    @Produces( { MediaType.APPLICATION_JSON } )
    public ComplexObject complexObject( @PathParam( "name" ) String name ) {
        return new ComplexObject(name, System.currentTimeMillis(), 42L);
    }
}

Answer 5

发现这一点也很有效，并且是最容易解决问题的（AFAIT）

  

在pom.xml中包含以下依赖项/在lib路径中包含相应的JAR文件

<dependency>
    <groupId>com.owlike</groupId>
    <artifactId>genson</artifactId>
    <version>0.99</version>
</dependency

Link here

Answer 6

只需使用@XmlElement代替@XmlAttribute（只有属性接收@前缀，可能会重新启动你的appserver以获得更改后的效果！）