HTTP状态500-无法为JSP Java8，Tomcat8.5编译类 [英] HTTP Status 500 - Unable to compile class for JSP Java8, Tomcat8.5
问题描述
我有一个主要的jsp文件，该文件使用了boxers包中的java类.但是，当我尝试运行jsp时，会出现以下错误:
HTTP Status 500 - Unable to compile class for JSP:in the jsp file: /web/date_info.jsp boxers.B cannot be resolved to a type.
I have a main jsp file which makes use of java class in the boxers package. But when I try to run jsp, the following error occures:
HTTP Status 500 - Unable to compile class for JSP:in the jsp file: /web/date_info.jsp boxers.B cannot be resolved to a type.
date_info.jsp
date_info.jsp
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<p><%= boxers.B.voice()%></p>
</body>
</html>
B级:
package boxers;
public class B {
public static String voice()
{
return "HELLO";
}
}
我已经阅读了版本之间的冲突可能会导致这种情况；我的Java版本是8，Tomcat 8.5.
I've read the conflict between versions can cause this; my Java version is 8, Tomcat 8.5..
我已经查看了webapps/my_app/build/web/WEB-INF/classes/boxers文件夹，并且有一个B.class文件...
I've looked into webapps/my_app/build/web/WEB-INF/classes/boxers folder and there is a B.class file...
我想知道那些投票不足的人是否至少知道问题的答案.
I wonder if those who downvote at least know the answer to the question.
推荐答案
弄清楚了.该应用程序未正确部署. 此处帮助了我.特别是-copying web application archive file (.war)和copying unpacked web application directory.我的主要错误是，最初我以错误的方式应用了第二种方法-复制了由Netbeans创建的app目录中的所有文件夹(内部版本，src，web等)，而仅NetbeansProjects/app_name/build/web的内容应该已经复制到tomcat/app_name/中.
或者只是将NebeansProjects/app_name/dist/的war文件复制到tomcat/webapps中-Tomcat将在几秒钟后使用文件自己创建合适的文件夹.
Figured it out. The application wasn't deployed correctly. The deployment process, described here helped me out. In particular - copying web application archive file (.war) and copying unpacked web application directory. My main mistake was that initially I applied the second method in the wrong way - copied all the folders in the app directory, created by Netbeans (build, src, web etc), while only NetbeansProjects/app_name/build/web's content should have been copied into tomcat/app_name/.
Or just copy the war-file of NebeansProjects/app_name/dist/ into tomcat/webapps - the tomcat will create the appropriate folder with the files himself seconds later.
tl; dr:错误的部署，复制war或web的内容.
tl;dr: wrong deploment, copypaste war or web's content.
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