Ich versuche Apache POI auf einer JSP zu implementieren, um eine Excel-Datei zu lesen und die Werte einiger Zellen zu nehmen und es auf den Eingaben anzuzeigen, die ich auf meiner Seite habe. Aber ich bin immer diese Fehlermeldung:Exception Implementierung von Apache POI auf einer JSP
type Exception report
message Unable to compile class for JSP:
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 16 in the jsp file: /helloWorld.jsp
HSSFWorkbook cannot be resolved to a type
13: <body>
14:
15: <%
16: HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream("excel.xls"));
17: HSSFSheet sheet = workbook.getSheetAt(0);
18: HSSFRow row = sheet.getRow(1);
19: double Something,Something1,Something2,Something3,Something4;
An error occurred at line: 17 in the jsp file: /helloWorld.jsp
HSSFSheet cannot be resolved to a type
14:
15: <%
16: HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream("excel.xls"));
17: HSSFSheet sheet = workbook.getSheetAt(0);
18: HSSFRow row = sheet.getRow(1);
19: double Something,Something1,Something2,Something3,Something4;
An error occurred at line: 18 in the jsp file: /helloWorld.jsp
HSSFRow cannot be resolved to a type
15: <%
16: HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream("excel.xls"));
17: HSSFSheet sheet = workbook.getSheetAt(0);
18: HSSFRow row = sheet.getRow(1);
19: double Something,Something1,Something2,Something3,Something4;
Stacktrace:
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:103)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:366)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:490)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:379)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:354)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:341)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:662)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:364)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
und das ist der Code, den ich auf meine .jsp Datei:
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ page import="org.apache.poi.hssf.usermodel.*"%>
<%@ page import="java.io.*" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head></head>
<body>
<%
HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream("excel.xls"));
HSSFSheet sheet = workbook.getSheetAt(0);
HSSFRow row = sheet.getRow(1);
double Something,Something1,Something2,Something3,Something4;
Something= row.getCell(0).getNumericCellValue();
Something1= row.getCell(1).getNumericCellValue();
Something2= row.getCell(2).getNumericCellValue();
Something3= row.getCell(3).getNumericCellValue();
Something4= row.getCell(4).getNumericCellValue();
%>
<div>
<table>
<tr>
<td>Something: </td>
<td><input type="text" value="<% Something %>"></td>
</tr>
<tr>
<td>Something1: </td>
<td><input type="text" value="<% Something1 %>"></td>
</tr>
<tr>
<td>Something2: </td>
<td><input type="text" value="<% Something2 %>"></td>
</tr>
<tr>
<td>Something3: </td>
<td> <input type="text" value="<% Something3 %>"></td>
</tr>
<tr>
<td>Something4: </td>
<td><input type="text" value="<% Something4 %>"></td>
</tr>
</table>
</div>
</body>
</html>
Und ich bereits die benötigten JAR-Dateien hinzufügen.
Edit: an einem Anfang der Import wie folgt war:
<%@ page import="org.apache.poi.hssf.usermodel.HSSFWorkbook"%>
<%@ page import="org.apache.poi.hssf.usermodel.HSSFSheet"%>
<%@ page import="org.apache.poi.hssf.usermodel.HSSFRow"%>
Aber es wurde über dem Fehler um diesen Fehler zu werfen am Anfang gezeigt:
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: [14] in the generated java file: [C:\apache-tomcat-7.0.70\apache-tomcat-7.0.70\work\Catalina\localhost\HelloWorldJSP\org\apache\jsp\helloWorld_jsp.java]
Only a type can be imported. org.apache.poi.hssf.usermodel.HSSFWorkbook resolves to a package
An error occurred at line: [15] in the generated java file: [C:\apache-tomcat-7.0.70\apache-tomcat-7.0.70\work\Catalina\localhost\HelloWorldJSP\org\apache\jsp\helloWorld_jsp.java]
Only a type can be imported. org.apache.poi.hssf.usermodel.HSSFSheet resolves to a package
An error occurred at line: [16] in the generated java file: [C:\apache-tomcat-7.0.70\apache-tomcat-7.0.70\work\Catalina\localhost\HelloWorldJSP\org\apache\jsp\helloWorld_jsp.java]
Only a type can be imported. org.apache.poi.hssf.usermodel.HSSFRow resolves to a package
Es ist kein Duplikat von einer Frage, die ich zuvor getan habe, die andere Frage hatte fast das gleiche Problem, aber wurde gelöst, und derjenige, der es löst, sagte mir, eine neue Frage mit dem neuen Fehler zu öffnen. –