在做項目時候,遇到這個500錯誤。找了很久,jsp寫法也沒錯誤,在本地myeclipse可以運行,在別人的myeclipse不能運行,最后終于解決了,是tomcat的版本問題。

HTTP Status 500 –

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: /PCManage/controlsecletthenews.jsp(303,12) The function getNid must be used with a prefix when a default namespace is not specifiedorg.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:40)org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:148)org.apache.jasper.compiler.Validator$ValidateVisitor$1FVVisitor.visit(Validator.java:1506)org.apache.jasper.compiler.ELNode$Function.accept(ELNode.java:129)org.apache.jasper.compiler.ELNode$Nodes.visit(ELNode.java:200)org.apache.jasper.compiler.ELNode$Visitor.visit(ELNode.java:242)org.apache.jasper.compiler.ELNode$Root.accept(ELNode.java:56)org.apache.jasper.compiler.ELNode$Nodes.visit(ELNode.java:200)org.apache.jasper.compiler.Validator$ValidateVisitor.validateFunctions(Validator.java:1531)org.apache.jasper.compiler.Validator$ValidateVisitor.checkXmlAttributes(Validator.java:1176)org.apache.jasper.compiler.Validator$ValidateVisitor.visit(Validator.java:846)org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1530)org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2361)org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2411)org.apache.jasper.compiler.Validator$ValidateVisitor.visit(Validator.java:865)org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1530)org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2361)org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2411)org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2417)org.apache.jasper.compiler.Node$Root.accept(Node.java:495)org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2361)org.apache.jasper.compiler.Validator.validateExDirectives(Validator.java:1763)org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:198)org.apache.jasper.compiler.Compiler.compile(Compiler.java:347)org.apache.jasper.compiler.Compiler.compile(Compiler.java:327)org.apache.jasper.compiler.Compiler.compile(Compiler.java:314)org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:592)org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)javax.servlet.http.HttpServlet.service(HttpServlet.java:717)serlvet.SearchNewsServlet.doPost(SearchNewsServlet.java:79)javax.servlet.http.HttpServlet.service(HttpServlet.java:637)javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.29 logs.

原因;是tomcat6.0版本不夠高,不支持以下代碼這樣下,因此不斷報錯。

解決方法:

(1)我是用tomcat6.0運行的,不斷地提示錯誤代碼,但是并沒有錯的。

報錯代碼貼出來,但是在我的myeclipse是可以運行:

<table class=”table table-hover” style=”margin-top:10px;padding:20px;”> <tr><td>新聞id</td><td>標題</td><td>類別</td><td>作者</td><td>瀏覽量</td><td>時間</td><td>照片路徑</td><td>內容</td></tr> <c:forEach items=”${project_vector}” var=”vector” varStatus=”status”> <tr> <td><c:out value=”${vector.getNid()}”/></td> <td><c:out value=”${vector.getNbiaoti()}”/></td> <td><c:out value=”${vector.getNleixing()}”/></td> <td><c:out value=”${vector.getNzuozhe()}”/></td> <td><c:out value=”${vector.getNliulangliang()}”/></td> <td><c:out value=”${vector.getNdate()}”/></td> <td><img style=”height:30px;width:30px;background:blue” src=”<%=request.getContextPath() %>${vector.getNphotepath()}” alt=””/></td><!– <c:out value=”${vector.getNphotepath()}”/> –> <td><c:out value=”${vector.getNtext()}”/></td> </tr> </c:forEach>

(2)改用tomcat7.0,成功運行,完美解決了這個問題。

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