java.lang.LinkageError: loader constraint violation:

插件开发启动报这个错误：

java.lang.LinkageError: loader constraint violation: loader (instance of org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) previously initiated loading for a different type with name "javax/servlet/http/HttpServletResponse"
at gov.gfmis.mobile.tl.report.TLMobileReportSkeletonInvoke.afterInvoke(TLMobileReportSkeletonInvoke.java:108)
at gov.gfmis.mobile.skeleton.DefaultMobileSkeletonInvoke.invoke(DefaultMobileSkeletonInvoke.java:55)
at gov.gfmis.mobile.skeleton.MobileExporter.invoke(MobileExporter.java:85)
at gov.gfmis.mobile.skeleton.MobileServiceExporter.handleRequest(MobileServiceExporter.java:39)
at org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter.handle(HttpRequestHandlerAdapter.java:49)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:875)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:807)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:501)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.eclipse.equinox.http.servlet.internal.ServletRegistration.service(ServletRegistration.java:61)
at org.eclipse.equinox.http.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:28)
at gov.gfmis.fap.util.sessionmanager.SaveSessionFilter.doFilter(SaveSessionFilter.java:130)
at org.eclipse.equinox.http.servlet.internal.FilterRegistration.doFilter(FilterRegistration.java:65)
at org.eclipse.equinox.http.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:25)
at com.anyi.gp.context.ApplusContextSetHandler$ContextAdapterFilter.doFilter(Unknown Source)
at org.eclipse.equinox.http.servlet.internal.FilterRegistration.doFilter(FilterRegistration.java:65)
at org.eclipse.equinox.http.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:25)
at org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:132)
at org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.eclipse.equinox.servletbridge.BridgeServlet.service(BridgeServlet.java:210)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at com.ufgov.app.manager.http.internal.RequestWrappingFilter.doFilter(RequestWrappingFilter.java:62)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3496)

其实就是包加载的时候冲突，不要采用classpath方式的引包方式，下面这种方式就会导致包冲突，因为其他的地方已经有了servlet-api.jar的插件包



采用下面的引包的方式，目的就是引入别的地方的插件包，这样就保证了所有的地方的插件包都引用的是同一个插件包