我尝试在jsp的tomcat5.5中运行此netbeans 6.1程序
<%@ page import="java.io.*" %>
<%@ page import="java.util.*" session="true"%>
<%@ page import="com.hp.hpl.jena.rdf.model.*"%>
<%@ page import="com.hp.hpl.jena.query.*"%>
<%
try
{
String inputFile="C:\\Users\\Admin\\Documents\\NetBeansProjects\\finalview\\resumenew.rdf";
InputStream in = new BufferedInputStream(new FileInputStream(new File(inputFile)));
Model model = ModelFactory.createMemModelMaker().createModel("");
model.read(in,null) ;
String queryString =
"PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> " +
"PREFIX foaf: <http://www.xmlns.com/foaf/0.1> " +
"SELECT ?name ?phone WHERE { ?person foaf:name ?name . ?person foaf:phone ?phone }";
Query query1 = QueryFactory.create(queryString);
QueryExecution qe = QueryExecutionFactory.create(query1,model);
ResultSet results = qe.execSelect();
ResultSetFormatter.out(System.out, results, query1);
qe.close();
}catch(Exception e){}
%>
运行程序时出现以下异常
exception
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 6 in the jsp file: /test.jsp
Generated servlet error:
Model cannot be resolved to a type
An error occurred at line: 6 in the jsp file: /test.jsp
Generated servlet error:
ModelFactory cannot be resolved
An error occurred at line: 6 in the jsp file: /test.jsp
Generated servlet error:
Query cannot be resolved to a type
An error occurred at line: 6 in the jsp file: /test.jsp
Generated servlet error:
QueryFactory cannot be resolved
An error occurred at line: 6 in the jsp file: /test.jsp
Generated servlet error:
QueryExecution cannot be resolved to a type
An error occurred at line: 6 in the jsp file: /test.jsp
Generated servlet error:
QueryExecutionFactory cannot be resolved
An error occurred at line: 6 in the jsp file: /test.jsp
Generated servlet error:
ResultSet cannot be resolved to a type
An error occurred at line: 6 in the jsp file: /test.jsp
Generated servlet error:
ResultSetFormatter cannot be resolved
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)c
您能告诉我，我的
jsp程序和作为输入输入的文件应该保存在哪里。如何避免此错误？
最佳答案
您的Jena库（及其依赖项）应位于WEB-INF / lib（区分大小写）下，这是放置应用程序jar文件的标准Java EE文件夹。确保您的分类（查询，查询工厂，模型工厂等）：
存在于您放在WEB-INF / lib下的任何jar文件中。
属于com.hp.hpl.jena.rdf.model。*或com.hp.hpl.jena.query。*
尝试使用此应用程序结构：
tomcat/webapps/ROOT
- test.jsp
- WEB-INF
- lib
- your .jar files
顺便说一句，您的“ Model 1代码”似乎是转移到Servlet（模型2）的一个不错的选择，但这仅是与JSP编译器错误无关的设计建议。