将 Apache Jersey for REST Web 服务与 struts2 Web 应用程序集成

Question

我有一个使用 struts2 框架的 Web 应用程序。我想使用 Apache Jersey 添加对 REST Web 服务的支持。我已按应用程序进行配置，但在尝试运行 Web 服务时出现 404 错误。我在互联网上搜索，发现过滤器拦截所有请求，使 servlet 映射无用。我还通过配置 struts.xml 排除了 url 模式找到了解决方案，但仍然存在未找到 404 的相同问题。我在下面附上我的代码。 提前致谢。

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:jsp="http://java.sun.com/xml/ns/javaee/jsp" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
  <display-name>ocmsLatest</display-name>
  <context-param>
    <param-name>quartz:config-file</param-name>
    <param-value>/quartz.properties</param-value>
  </context-param>
  <context-param>
    <param-name>quartz:shutdown-on-unload</param-name>
    <param-value>true</param-value>
  </context-param>
  <context-param>
    <param-name>quartz:wait-on-shutdown</param-name>
    <param-value>false</param-value>
  </context-param>
  <context-param>
    <param-name>quartz:start-scheduler-on-load</param-name>
    <param-value>true</param-value>
  </context-param>
  <listener>
    <listener-class>
             org.quartz.ee.servlet.QuartzInitializerListener
         </listener-class>
  </listener>
  <filter>
    <filter-name>struts2</filter-name>
    <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>struts2</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <context-param>
    <param-name>org.apache.tiles.impl.BasicTilesContainer.DEFINITIONS_CONFIG</param-name>
    <param-value>/WEB-INF/tiles.xml</param-value>
  </context-param>
  <listener>
    <listener-class>org.apache.struts2.tiles.StrutsTilesListener</listener-class>
  </listener>
  <session-config>
    <session-timeout>30</session-timeout>
  </session-config>
  <welcome-file-list>
    <welcome-file>/pages/user/index.jsp</welcome-file>
  </welcome-file-list>
  <jsp-config>
    <jsp-property-group>
      <url-pattern>*.jsp</url-pattern>
      <trim-directive-whitespaces>true</trim-directive-whitespaces>
    </jsp-property-group>
  </jsp-config>
  <servlet>
    <description></description>
    <display-name>InitServlet</display-name>
    <servlet-name>InitServlet</servlet-name>
    <servlet-class>com.ocms.util.InitServlet</servlet-class>
    <load-on-startup>0</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>InitServlet</servlet-name>
    <url-pattern>/InitServlet</url-pattern>
  </servlet-mapping>
  <servlet>
    <servlet-name>Captcha</servlet-name>
    <servlet-class>com.roseindiaCaptcha.servlet.RoseIndiaCaptcha</servlet-class>
    <init-param>
      <description>passing height</description>
      <param-name>height</param-name>
      <param-value>60</param-value>
    </init-param>
    <init-param>
      <description>passing width</description>
      <param-name>width</param-name>
      <param-value>200</param-value>
    </init-param>
  </servlet>
  <servlet-mapping>
    <servlet-name>Captcha</servlet-name>
    <url-pattern>/Captcha.jpg</url-pattern>
  </servlet-mapping>
  <error-page>
    <error-code>404</error-code>
    <location>/pages/error404.jsp</location>
  </error-page>
    <servlet>
  <servlet-name>Jersey REST Service</servlet-name>
<servlet-class>
  com.sun.jersey.spi.container.servlet.ServletContainer
</servlet-class>
  <init-param>
    <param-name>com.sun.jersey.config.property.packages</param-name>
    <param-value>com.ocms.rest</param-value>
  </init-param>
  <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
  <servlet-name>Jersey REST Service</servlet-name>
  <url-pattern>/rest/*</url-pattern>
</servlet-mapping>
</web-app>

struts.xml

<struts>
    <constant name="struts.action.excludePattern" value="/rest/.*" />
    <constant name="struts.enable.DynamicMethodInvocation" value="false" />
    <constant name="struts.devMode" value="false" />
    <constant name="struts.custom.i18n.resources" value="com.ocms.app.resources.Resources" />
    <constant name="struts.multipart.maxSize" value="104857600000" />
//all action mappings
</struts> 

Hello.java

package com.ocms.rest;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;


@Path("/hello")
public class Hello {
    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String sayHello() {
        return "Hello Jersey";
    }
}

Answer 1

我已经将FilterDispatcher，org.apache.struts2.dispatcher.FilterDispatcher改为org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter，然后问题就解决了。