急求怎么在jsp里写js语句??<td><a href="/test/StudentServlet
急求怎么在jsp里写js语句??<td><ahref="/test/StudentServlet?status=loginStudent&varSno=document....
急求怎么在jsp里写js语句??<td><a href="/test/StudentServlet?status=loginStudent&var Sno=document.getElementById('Sno')">注册</a></td>
这是错误信息
java.lang.NumberFormatException: null
java.lang.Integer.parseInt(Integer.java:454)
java.lang.Integer.parseInt(Integer.java:527)
com.servlet.StudentServlet.doGet(StudentServlet.java:32)
javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 展开
这是错误信息
java.lang.NumberFormatException: null
java.lang.Integer.parseInt(Integer.java:454)
java.lang.Integer.parseInt(Integer.java:527)
com.servlet.StudentServlet.doGet(StudentServlet.java:32)
javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 展开
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