|
こんにちは
JSPのコンパイルエラーで悩まされていて質問させていただきました
<%
if(request.getAttribute("list")!=null){
List list=(List)request.getAttribute("list");
List list1=(List)request.getAttribute("list1");
List list2=(List)request.getAttribute("list2");
for(int i=0; i<list.size(); i++){
out.print(list.get(i)+" ");
out.print(list1.get(i)+" ");
out.println(list2.get(i));
%><br>
↑これだとコンパイルが成功します
<%
if(request.getAttribute("list") || request.getAttribute("list1") || request.getAttribute("list2")!=null){
List list=(List)request.getAttribute("list");
List list1=(List)request.getAttribute("list1");
List list2=(List)request.getAttribute("list2");
for(int i=0; i<list.size(); i++){
out.print(list.get(i)+" ");
out.print(list1.get(i)+" ");
out.println(list2.get(i));
%><br>
これだとエラーが発生します・・・
条件を増やしただけなんですが、何か構文がまちがっているのでしょうか？？
アドバイスお願いします
SPファイル: /＊＊＊＊jsp の中の36行目でエラーが発生しました
The operator || is undefined for the argument type(s) java.lang.Object, java.lang.Object
33: <Hr>
34:
35: <%
36: if(request.getAttribute("list") || request.getAttribute("list1") || request.getAttribute("list2")!=null){
37: List list=(List)request.getAttribute("list");
38: List list1=(List)request.getAttribute("list1");
39: List list2=(List)request.getAttribute("list2");
Stacktrace:
at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:93)
at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
at org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:435)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:298)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:277)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:265)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:564)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:302)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Unknown Source)
|
