顯示HTTP狀態500 - 當我運行jsp文件

我得到datetime1，datetime2，moteid作爲來自調用此代碼的另一個jsp代碼的輸入。這是工作正常，腳本1.sh一直工作正常。當我運行此代碼，其表示HTTP狀態500錯誤顯示HTTP狀態500 - 當我運行jsp文件

<%@page import="java.io.BufferedReader"%> 
<%@page import="java.io.InputStreamReader"%> 
<%@page import="java.io.File"%> 
<%@page import="java.util.Map"%> 
<%@page import="com.sixpanview.fileReader"%> 
<%@page import="java.util.Calendar"%> 
<%@page import="java.text.SimpleDateFormat"%> 
<%@page import="java.text.DateFormat"%> 
<%@page contentType="text/html" pageEncoding="UTF-8"%> 
    <!DOCTYPE html> 
    <html> 
     <head> 
      <% 
       String id = request.getParameter("moteid"); 
       String[] temp = id.split(":"); 
       String moteid = temp[0]; 
       String datetime1 = temp[1];  
       String datetime2 = temp[2]; 
       String moteId = temp[3]; 
        String sh = "sh"; 
        String rep = "/root/NetBeansProjects/JavaApplication/web/1.sh"; 
        String cpid = "\"" + moteid + "\""; 
        String mm = datetime1; 
        String nn = datetime2; 
        String kk = moteId; 


        String[] cmdarr = new String[]{sh, rep, moteid, mm, nn, kk}; 

        File file=new File("/root/NetBeansProjects/JavaApplication/web"); 
        ProcessBuilder pb = new ProcessBuilder(cmdarr); 

        pb.directory(file); 
        Process p = pb.start(); 
        p.waitFor(); 

          %> 



     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 
       <title>JSP Page</title> 
      </head> 
      <body> 
       <iframe src="report.pdf" width="100%" height="700px"/> 

      </body> 
     </html>

其表示

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 /pdf1jsp.jsp at line 23 

20:  <head> 
21:   <% 
22:    String id = request.getParameter("moteid"); 
23:    String[] temp = id.split(":"); 
24:    String moteid = temp[0]; 
25:    String datetime1 = temp[1];  
26:    String datetime2 = temp[2]; 


Stacktrace: 
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:521) 
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:430) 
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313) 
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717) 

root cause 

java.lang.NullPointerException 
    org.apache.jsp.pdf1jsp_jsp._jspService(pdf1jsp_jsp.java:80) 
    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:388) 
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313) 
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717) 

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.35 logs.

來源

2012-10-13 user1659213

22：字符串ID =的request.getParameter（「moteid」）;

這裏id爲null，這對上23行拋NPE的原因：

字符串[]臨時= id.split（「：」）;

來源

2012-10-13 12:21:25 AValchev

好的，Thankyou.I會檢查它。 – user1659213

顯示HTTP狀態500 - 當我運行jsp文件

回答

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