如何在Odata服务提供者中访问HttpServletRequest [英] How to access HttpServletRequest in Odata service provider

问题描述

我正在使用Odata4j公开我的服务，并且需要从我的服务提供者访问HttpServletRequest对象.有没有办法做到这一点.我尝试使用@Context注释注入对象，但是它给出了空值

I am using Odata4j for exposing my services and i need to access HttpServletRequest object from my service provider. Is there is a way yo do this. I tried using @Context annotation to inject the object but it is giving null

推荐答案

为此，您可以使用servlet过滤器并获取HTTPRequest对象数据.

For that you can use servlet filter and get the HTTPRequest object data.

要做两个简单的步骤.

第一个-定义过滤器servlet

public class YourRequestFilter implements ContainerRequestFilter {

@Override
    public ContainerRequest filter(ContainerRequest request) {
          if(  request.getRequestHeader("userName") != null ) {

            String username = request.getRequestHeader("username").get(0);      

        }

        }
}

第二次将此条目添加到web.xml

<servlet>     
<servlet-name>name</servlet-name>     
<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>     
<init-param>       
<param-name>javax.ws.rs.Application</param-name>       
<param-value>org.odata4j.jersey.producer.resources.ODataApplication</param-value>     
</init-param> 


<init-param>
       <param-name>com.sun.jersey.spi.container.ContainerRequestFilters</param-name> 
       <param-value>com.wipro.eim.middleware.framework.oauth.filter.OAuthContainerRequestFilter</param-value> 
</init-param>

<init-param>
       <param-name>com.sun.jersey.spi.container.ContainerRequestFilters</param-name> 
       <param-value>com.wipro.eim.middleware.framework.oauth.filter.YourRequestFilter</param-value> 
</init-param>

<load-on-startup>1</load-on-startup>   
</servlet>  

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