[英]Jersey Servlet: RequestDispatcher returning 404
我需要将请求转发到REST服务并进行以下代码:
private void performTask(HttpServletRequest request, HttpServletResponse response) throws ServletException,
IOException {
ServletContext portalContext = this.getServletContext();
ServletContext restService = portalContext.getContext("/restService");
RequestDispatcher dispatcher = restService.getRequestDispatcher("/resources/*");
dispatcher.forward(request, response);
}
服务“ / restService”还具有一个处理请求的servlet,其定义如下:
<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>com.service.RESTApplication</param-value>
</init-param>
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>com.rest.resources</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Jersey REST Service</servlet-name>
<url-pattern>/resources/*</url-pattern>
</servlet-mapping>
RESTApplication类具有以下代码:
public RESTApplication() {
register(WadlFeature.class);
register(JacksonFeature.class);
register(MultiPartFeature.class);
property(CommonProperties.FEATURE_AUTO_DISCOVERY_DISABLE, true);
}
“ com.rest.resources”中有多个类映射到请求(/ resources / *)随附的路径。 但是,当请求由“ getRequestDispatcher”转发时,Jersey会引发404错误 。 似乎Jersey无法将我的请求映射到正确的servlet。 如果我使用邮递员粘贴相同的URL,则请求将正常处理。 调度员的检查是:
为了验证问题是否出在Jersey,我创建了一个从HttpServlet扩展而未提交给Jersey的Servlet:
<servlet>
<servlet-name>HelloServlet</servlet-name>
<servlet-class>com.rest.resources.helloResource</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
之后,我执行了以下代码:
private void performTask(HttpServletRequest request, HttpServletResponse response) throws ServletException,
IOException {
ServletContext portalContext = this.getServletContext();
ServletContext restService = portalContext.getContext("/restService");
RequestDispatcher dispatcher = restService.getRequestDispatcher("/hello");
dispatcher.forward(request, response);
}
令人惊讶的是,这个向前实现的类helloResource放置在“ com.rest.resources”中。
有没有人遇到类似的事情? “ getRequestDispacther”如何查找和转发“ / resources / ” 处存在的servlet ?*
使用的版本:球衣2.6 servlet 2.5 jboss 4.2.3-GA
似乎Jersey希望“ getRequestDispatcher”满足必须处理的URL,而不是将其委托给映射的servlet。
此行解决了该问题:
RequestDispatcher调度程序= datasulRest.getRequestDispatcher(“ / resources /” + request.getPathInfo());
此后,请求由放置在“ com.rest.resources”中的资源处理。
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