0
내가 뭘 잘못 했습니까 ??최종 변수가 JSP로 작동하지 않습니다.
나는 7
내 JSP 코드 [... \ webapps에 \ 테스트 \의 index.jsp를]
<jsp:useBean id="Counter" scope="session" class="aaa.Counter" />
<html>
<title>sfcsv</title>
<%
try{
int x = Counter.read_count(),z = Counter.get_id();
if(x%2==0)
out.println(x + " = even");
else
out.println(x + " = odd");
out.println(z);
}catch(Exception e){
out.println(e);
}
%>
</html>
자바 코드 [.. \ 승리의 서비스로 아파치 톰캣 7을 실행하고 웹 어플리케이션의 \ 테스트 \ WEB-INF \ 클래스 \ AAA \ Counter.java]
package aaa;
public class Counter {
private int count;
private static int instance_counter;
private final int id;
public Counter(){
instance_counter ++;
id = instance_counter;
count = 0;
}
public int read_count(){
return count++;
}
public int get_id(){
return id;
}
}
예상 출력 :
24 = even 1
출력 :
24 = even
또는
HTTP Status 500 - Unable to compile class for JSP: An error occurred at line: 8 in the jsp file: /index.jsp The method get_id() is undefined for the type Counter 5: 6: <% 7: try{ 8: int x = Counter.read_count(),z = Counter.get_id(); 9: if(x%2==0) 10: out.println(x + " = even"); 11: else Stacktrace:
type Exception report
message Unable to compile class for JSP: An error occurred at line: 8 in the jsp file: /index.jsp The method get_id() is undefined for the type Counter 5: 6: <% 7: try{ 8: int x = Counter.read_count(),z = Counter.get_id(); 9: if(x%2==0) 10: out.println(x + " = even"); 11: else Stacktrace:
description The server encountered an internal error (Unable to compile class for JSP: An error occurred at line: 8 in the jsp file: /index.jsp The method get_id() is undefined for the type Counter 5: 6: <% 7: try{ 8: int x = Counter.read_count(),z = Counter.get_id(); 9: if(x%2==0) 10: out.println(x + " = even"); 11: else Stacktrace:) that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 8 in the jsp file: /index.jsp
The method get_id() is undefined for the type Counter
5:
6: <%
7: try{
8: int x = Counter.read_count(),z = Counter.get_id();
9: if(x%2==0)
10: out.println(x + " = even");
11: else
Stacktrace:
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:102)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:331)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:469)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:378)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:353)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:340)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:646)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.29 logs.
Apache Tomcat/7.0.29
편집 : 컴퓨터를 다시 시작에 문제는 이미 문제가 해결
Counter 클래스가 업데이트되었는지 확인하십시오 귀하의 서버 webapp에? – SJuan76
java 파일을 컴파일 한 후 tomcat 서버를 다시 시작했습니다. 그 밖의 다른 작업은 무엇입니까? – Soumy
나는 이것을 테스트하고 정상적으로 작동합니다. 비록 Tomcat 6 + JDK 1.6이긴하지만.get_id()를 포함하도록 전쟁을 재건 했습니까? – Reimeus