如何在我的項目

Question

擴展一個類，這不是我想要寫一個custom authentication類xwiki。

我有了寫有一個認證機制的一個項目，如果有人改掉訪問XWiki實現，我希望它通過使用XWiki實現自定義身份驗證重定向到我的項目的登錄頁面。

我試圖單獨從我的項目中編寫一個類，並將它與xwiki分開，將它打包爲一個jar，並將其放在xwiki項目的xwiki WEB-INF/lib文件夾中，因爲這就是說明爲xwiki定製認證。

的問題是，類我需要寫一些進口的XWiki實現類。如果我正在用這些導入編寫一個單獨的類，它將無法正確編譯。

我應該怎樣創建一個擴展一些XWiki實現類的類，如果它是需要進入XWiki實現的WEB-INF/lib文件夾一個單獨的類？

下面是有人張貼https://www.box.com/shared/9kamt5d9c5一個例子。

簡單的例子

package my.xwiki.custom.authentication; 

import java.io.*; 
import com.xpn.xwiki.XWikiContext; 
import com.xpn.xwiki.XWikiException; 
import com.xpn.xwiki.user.api.XWikiUser; 
import com.xpn.xwiki.user.impl.xiki.XWikiAuthServiceImpl; 


public class XWikiSSOImpl extends XWikiAuthServiceImpl { 

    @Override 
    public XWikiUser checkAuth(XWikiContext context) throws XWikiException { 
     System.out.println("we actually in checkAuth?"); 
    } 
} 

當我將jar文件添加到我的XWiki實現並運行它，我得到以下錯誤：

Detailed information: 

    Error number 0 in 11: Uncaught exception 
Wrapped Exception: Unresolved compilation problems: 
    The import com.xpn cannot be resolved 
    The import com.xpn cannot be resolved 
    The import com.xpn cannot be resolved 
    The import com.xpn cannot be resolved 
    XWikiAuthServiceImpl cannot be resolved to a type 
    XWikiUser cannot be resolved to a type 
    XWikiContext cannot be resolved to a type 
    XWikiException cannot be resolved to a type 

com.xpn.xwiki.XWikiException: Error number 0 in 11: Uncaught exception 
Wrapped Exception: Unresolved compilation problems: 
    The import com.xpn cannot be resolved 
    The import com.xpn cannot be resolved 
    The import com.xpn cannot be resolved 
    The import com.xpn cannot be resolved 
    XWikiAuthServiceImpl cannot be resolved to a type 
    XWikiUser cannot be resolved to a type 
    XWikiContext cannot be resolved to a type 
    XWikiException cannot be resolved to a type 

    at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:254) 
    at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:116) 
    at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) 
    at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) 
    at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) 
    at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:120) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:144) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:66) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) 
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859) 
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602) 
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) 
    at java.lang.Thread.run(Thread.java:662) 
Caused by: java.lang.Error: Unresolved compilation problems: 
    The import com.xpn cannot be resolved 
    The import com.xpn cannot be resolved 
    The import com.xpn cannot be resolved 
    The import com.xpn cannot be resolved 
    XWikiAuthServiceImpl cannot be resolved to a type 
    XWikiUser cannot be resolved to a type 
    XWikiContext cannot be resolved to a type 
    XWikiException cannot be resolved to a type 

    at my.xwiki.custom.authentication.XWikiSSOImpl <init>(XWikiSSOImpl.java:4) 
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) 
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) 
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513) 
    at java.lang.Class.newInstance0(Class.java:355) 
    at java.lang.Class.newInstance(Class.java:308) 
    at com.xpn.xwiki.XWiki.getAuthService(XWiki.java:5288) 
    at com.xpn.xwiki.XWiki.checkAuth(XWiki.java:4090) 
    at com.xpn.xwiki.user.impl.xwiki.XWikiRightServiceImpl.checkAccess(XWikiRightServiceImpl.java:205) 
    at com.xpn.xwiki.XWiki.checkAccess(XWiki.java:4103) 
    at com.xpn.xwiki.XWiki.prepareDocuments(XWiki.java:5128) 
    at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:179) 
    ... 34 more 

Answer 1

基於鏈路上提供你似乎沒有丟失任何進口，假設你沒有那麼任何明顯的語法錯誤，它指向你的開發環境。一個典型的解決方案是使用包的路徑設置CLASSPATH變量，但在我的經驗中容易出錯。

如果您使用Eclipse，請右鍵單擊您的項目名稱並選擇屬性。在屬性對話框中，點擊左側的'Java Build Path'。在'Java Build Path'屬性中，單擊Libraries選項卡。你想點擊'Add a External Jar ...'按鈕，你將在其中指定xwiki jar的路徑。

Answer 2

要編譯類，編譯器需要的定義所有引用的類（包括超類）。它可以使用已經編譯過的類（如.class文件或JAR文件），或者從源代碼編譯這些類。既然你不想編譯xwiki類，你會想做前者。

因此您需要將包含這些類的jar文件添加到您的類路徑中。如何做到這一點取決於你如何調用編譯器或你使用的IDE。在eclipse中，您可以右鍵單擊項目 - > Build Path - > Add External Archives。使用javac，您可以使用-cp選項。