0 and have already wrote a function that supposedly ' prints' an html. and it works fine, but when I try to use a button and call the funtion inside the servlet it gives me the status 500 error. I am creating Vaadin 6 application using eclipse Kepler. Tomcat Server is main page running ( localhost: 8080). But when I run an application, I get HTTP Status 500 - Failed to load application class error. type Exception report message Failed. The reason why you get the 500 error is in this line: request. setAttribute( " sNum", sNum) ;. Here you try to set a session attribute to a not initialized primitive datatype. To fix that should be getting the value from the. im doing a project on jsp with oracle backend. im using apache tomcat 5. few days ago tomcat server worked properly.
Tomcatで「 404 File Not Found」 とか「 500 Internal Server Error」 とかが発生すると、 デフォルトではTomcatが自動的に. HTTPエラーステータスコード別に、 独自のエラー ページを指定することで、 エラーステータスに合った独自のエラー. I tried to clear the web browsers' cache & cookies ( FireFox & Chrome), but this error does not go away. I run this project on GlassFish 4. I received the same ' HTTP Status 500 - Internal Server Error' on Tomcat 8 as well. Tomcatを使っていてHTTPステータス500エラーが出るのは、 大抵の場合は、 デプロイ したWebアプリにバグがあるか、 何らかの設定が誤っているかのいずれかです。 具体的 な原因を知るためには出力されたログを解析する必要があります。. createStatement( ) ; boolean flag = stmt. execute( query) ; if( flag) { out. write( " < h3> Data Inserted Successfully< / h3> " ) ; } else { out. write( " < h3> Data Insertion Failed< / h3> " ) ; } } catch ( SQLException e) { out. print( " Connection Error" ) ; e.
Make sure you have the datbase driver ( the MySql jar file) in the tomcat bin folder. Restart tomcat and try again. You can check your successful deployment via 21. 71: 8080/ crmapi/ application. looks for servlet class in public area so our servlet file must be public Otherwise we will get Error 500- internal server error.