获取“找不到媒体类型= application / json”的MessageBodyWriter尝试通过JAX-RS Web服务发送JSON对象 [英] Obtaining "MessageBodyWriter not found for media type=application/json" trying to send JSON object through JAX-RS web service
问题描述
我正在尝试通过JAX-RS Web服务发送JSON对象。
我的文件web.xml是:
I am trying to send a JSON object through a JAX-RS web service. My file web.xml is:
<servlet>
<description>JAX-RS Tools Generated - Do not modify</description>
<servlet-name>JAX-RS Servlet</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>it.notifire</param-value>
</init-param>
<init-param>
<param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>JAX-RS Servlet</servlet-name>
<url-pattern>/jaxrs/*</url-pattern>
</servlet-mapping>
为我要发送的对象建模的类是:
The class that models the object I want to send is:
public class GPSCoordinate {
private float latitudine;
private float longitudine;
public float getLatitudine() {
return latitudine;
}
public void setLatitudine(float latitudine) {
this.latitudine = latitudine;
}
public float getLongitudine() {
return longitudine;
}
public void setLongitudine(float longitudine) {
this.longitudine = longitudine;
}
}
根类资源是:
@Path("position")
public class Position {
@Context
private UriInfo context;
@GET
@Produces(MediaType.APPLICATION_JSON)
public GPSCoordinate getHTML() {
GPSCoordinate coord = new GPSCoordinate();
coord.setLatitudine(90.45f);
coord.setLongitudine(34.56f);
return coord;
}
}
现在,当我尝试访问服务时,我点我的浏览器到以下链接
Now, when i try to access the service I point my browser to the following link
http://localhost:8080/Notifire/jaxrs/position
我收到以下错误:
message org.glassfish.jersey .message.internal.MessageBodyProviderNotFoundException:找不到媒体类型= application / json的MessageBodyWriter
message org.glassfish.jersey.message.internal.MessageBodyProviderNotFoundException: MessageBodyWriter not found for media type=application/json
在我的WEB-INF / lib文件夹中,我有最后一个版本的jersey JAX-RS实现(jaxrs-ri-2.5.jar)和jersey-json.jar存档。
In my WEB-INF/lib folder I have the last release of jersey JAX-RS implementation (jaxrs-ri-2.5.jar) and the jersey-json.jar archive.
任何帮助都将不胜感激。
Any help would be much appreciated.
推荐答案
尝试将 Genson 添加到您的类路径,它将自动启用JSON支持。
Try adding Genson to your classpath, it will automatically enable JSON support.
Genson是json和java / scala的数据绑定和流媒体库。它实现了JAX-RS的扩展点MessageBodyReader / Writer,允许jersey自动检测Genson并将其用于Json解析/写入。
Genson is a data-binding and streaming library for json and java/scala. It implements the extension points MessageBodyReader/Writer of JAX-RS, allowing jersey to automatically detect Genson and use it for Json parsing/writing.
你可以找到更多关于它的信息 Gensons与JaxRS的整合(jersey& cie )。
You can find some more infos about Gensons integration with JaxRS (jersey & cie).
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