Question

jsp浏览出现HTTP Status 500 问题 求解决

HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.exception
org.apache.jasper.JasperException: An exception occurred processing JSP page /select.jsp at line 32
29: <%30: News news=new News();31: 32: List<NewsInfo> list=news.getList();33: 34: for(NewsInfo info:list) {
35: %>

root cause
java.sql.SQLException: Invalid value for getInt() - '个人日志' com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055) com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956) com.mysql.jdbc.SQLError.createSQLException(SQLError.java:926) com.mysql.jdbc.ResultSetImpl.getInt(ResultSetImpl.java:2646) com.mysql.jdbc.ResultSetImpl.getInt(ResultSetImpl.java:2734) com.ch6.dal.News.getList(News.java:33) org.apache.jsp.select_jsp._jspService(select_jsp.java:88) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.18 logs.

Answer 1

32: List<NewsInfo> list=news.getList();这行有错误
可能有如下原因：
1、List NewsInfo没导包，但是你的编译器没有告诉你，但是编译没有通过
2、类型转换错误
3、空指针
4、sql等后台错误
你需要dibug 一步一步跟尊查看了

追问

已经导了NewsInfo.java了呀

至于类型转换错误是指哪里呢

哎 这个问题已经卡死两天了

Answer 2

/select.jsp at line 3 在/select.jsp 这个页面的第三行