求救。。我servlet有错误求各位大佬帮忙

[gatx177]

HTTP Status 500 -

--------------------------------------------------------------------------------

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

java.lang.NullPointerException
com.movie.action.newMovie.doGet(newMovie.java:30)
javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)


配置路径无错。。一写到自己的方法就错

[gatx177]

求大侠帮忙谢谢

[gatx177]

求教啊！

[火光闪耀]

java.lang.NullPointerException


你debug下，看看哪里是空的。也不知道你的代码，就只有这么给你说了。

[飞跃颠峰]

把newMovie.java第30行贴出来啊

[gatx177]

代码
package com.movie.action;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.movie.biz.Initbiz;

public class Init extends HttpServlet {



/**
* Destruction of the servlet. <br>
*/


/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

doPost(request, response);
}

/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

String imei = request.getParameter("imei");
String phonenum = request.getParameter("phonenum");
int product =Integer.getInteger(request.getParameter("product"));
String platform = request.getParameter("platform");
String terminalinfo = request.getParameter("terminalinfo");
String version = request.getParameter("version");
String did = request.getParameter("did");
String action = request.getParameter("action");
String key = request.getParameter("key");
Initbiz biz = new Initbiz();
response.setContentType("text/xml");
PrintWriter out = response.getWriter();
out .println("<?xml version='1.0' encoding='UTF-8'?>");
out.println(biz.CreateInitXml(imei, phonenum, product, platform, terminalinfo, did, action, key));
out.flush();
out.close();
}

/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/


}

[Spring89]

newMovie第30行出现著名的java.lang.NullPointerException
你看下代码，你对一个null对象进行了操作，调用了它的方法，
故出现这个异常！debug或者把代码贴出来，这样问题就很好解决了！

[meishichuichuifeng]

public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

doPost(request, response);
}

这里要用this.doPost（request，response）；
用this掉用dopost方法

[gatx177]

[Quote=引用 5 楼 gatx177 的回复:]
代码
package com.movie.action;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.H……
[/Quote]
Source not found for ApplicationFilterChain.internalDoFilter(ServletRequest, ServletResponse) line: 306 大佬太强了

[Spring89]

我看了一下你的代码，产生java.lang.NullPointerException的代码99%出现在这里：
int product =Integer.getInteger(request.getParameter("product"));
看看这个product是不是写错了，页面上有没有这个！
还有1%可能产生java.lang.NullPointerException的代码是这里：
out.println(biz.CreateInitXml(imei, phonenum, product, platform, terminalinfo, did, action, key));

[飞跃颠峰]

其他朋友都很详细地解释了，我只给楼主提个建议：
以后遇到这样的问题，先自己分析下报错的地方，Exception通常把程序名和行号都报告出来了。

此外为了能更快让大家帮到你，尽量贴出关键代码，而且最好是带行号的，免得让大家还要数行数

[gatx177]

谢谢各位大叔大姐关心^^