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我ENV碼頭8.1ServletRequest中的NoSuchMethodError
public void service(ServletRequest request, ServletResponse response) throws ServletException, IOException {
//this line prints org.eclipse.jetty.server.Request
System.out.println("class is "+request.getClass().getName());
org.eclipse.jetty.server.Request jettyRequest = (org.eclipse.jetty.server.Request)request;
//request.getServletContext();//this line fails with noSuchMethodError
jettyRequest.getServletContext(); // this line works
...
任何人都可以解釋這一點....?
參考:http://docs.oracle.com/javaee/6/api/javax/servlet/ServletRequest.html#getServletContext() – madth3 2013-02-20 00:51:26
爲什麼該函數調用工作,如果我像在代碼中那樣轉換對象以上? – root1982 2013-02-20 05:44:25
你就鑄造'org.eclipse.jetty.server.Request'這已經多年,方法,因爲它是提供基本的servlet支持一個有用的方法(內部爲碼頭類)。然而,servlet的API SPEC最近纔將其添加到該servlet 3.0 API。 (請參閱從madth3 javadoc的鏈接) – 2013-02-20 13:40:48