org apache jasper JasperException Unable to compile class for JSP

Question

Hi I m trying to compile a simple jsp file with tomcat but I kept having this error message  org apache jasper JasperException  Unable to compile class for JSP    An error occurred at line  13 in the jsp file   WebContent test jsp Member cannot be resolved to a type 10   lt body gt  11   lt     12        MyBatisDao myDao   new MyBatisDao    13      List lt Member gt  list       myDao func  test    14        out println  Result list      list   15    gt  16   lt  body gt    test jsp  at Webcontent    lt    page language  java  contentType  text html  charset UTF-8  pageEncoding  UTF-8   gt   lt    page import  pageNumber    java util    java io      gt   lt  DOCTYPE html PUBLIC  -  W3C  DTD HTML 4 01 Transitional  EN   http   www w3 org TR html4 loose dtd  gt   lt html gt    lt head gt   lt meta http-equiv  Content-Type  content  text html  charset UTF-8  gt   lt title gt Insert title here lt  title gt   lt  head gt   lt body gt   lt         List lt Member gt  list    gt   lt  body gt   lt  html gt     Member java  package pageNumber  public class Member    private String id   private String pw   private int point   private int lvl    public Member       public Member String id  String pw  int point  int lvl      this id   id    this pw   pw    this point   point    this lvl   lvl       public String getId     return id     public void setId String id    this id   id     public String getPw     return pw     public void setPw String pw    this pw   pw     public int getPoint     return point     public void setPoint int point    this point   point          public int getLvl     return lvl     public void setLvl int lvl    this lvl   lvl     public String toString       return  ID      id      PW      pw      POINT      point      LVL      lvl          As far as I can tell  I am having this problem because my tomcat cannot locate the class file   so I have placed my class files at    build classes pageNumber  where pageNumber is my package name  WEB-INF classes pageNumber tomcat work Catalina localhost  org apache jsp pageNumber   but none of it worked out  Any help     Edit  After I change my import declaration from   lt    page import  pageNumber    java util    java io      gt    to   lt    page import  java util List  pageNumber Member    gt    It actually gave me a new type of error   org apache jasper JasperException  Unable to compile class for JSP    An error occurred at line  15 in the generated java file Only a type can be imported  pageNumber Member resolves to a package  An error occurred at line  12 in the jsp file   WebContent test jsp Member cannot be resolved to a type 9   lt  head gt  10   lt body gt  11   lt     12      List lt Member gt  list       myDao func  test    13    gt  14   lt  body gt  15   lt  html gt

User · Answer

The problem is caused because you need to import the pageNumber.Member class in your JSP. Make sure to also include another packages and classes like java.util.List.

<%@ page import="pageNumber.*, java.util.*" %>

Still, you have a major problem by using scriptlets in your JSP. Refer to How to avoid Java Code in JSP-Files? and start practicing EL and JSTL and focusing more on a MVC solution instead.

User · Answer

include your Member Class to your jsp     lt    page import  pageNumber    java util    java io   yourMemberPackage Member    gt

User · Answer

I was facing the issue  i found that that older ecj library is present in Apache Tomcat directory  1 remove old jar from Apache Tomcat  library  2 clean the project  3 build it   It started working as expected

User · Answer

Please remove the servlet jar from web project as any how  the application web server already had

User · Answer

There s no need to manually put class files on Tomcat  Just make sure your package declaration for Member is correctly defined as  package pageNumber    since  that s the only application package you re importing in your JSP    lt    page import  pageNumber    java util    java io      gt

User · Answer

This line of yours    lt    page import  pageNumber    java util    java io      gt    Requires an   symbol before   like this    lt    page import  pageNumber    java util    java io       gt

User · Answer

This maybe caused by jar conflict  Remove the servlet-api jar in your servlet WEB-INF  directory   Tomcat home  lib already have this lib

[java] org.apache.jasper.JasperException: Unable to compile class for JSP:

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