Java.lang.IllegalStateException:Cannot forward after response have been committed

Change to Singleton mode:

Package com.gzzy.rmm.common.servlet;

Import java.io.IOException;
Import Java.io.PrintWriter;

Import Javax.servlet.ServletContext;
Import javax.servlet.ServletException;
Import Javax.servlet.SingleThreadModel;
Import Javax.servlet.http.HttpServlet;
Import Javax.servlet.http.HttpServletRequest;
Import Javax.servlet.http.HttpServletResponse;

Import Org.apache.log4j.Logger;

Import Com.gzzy.af.pojo.EmployeeInfo;

Public abstract class Baseservlet extends httpservlet{
Private static final Logger log = Logger.getlogger (BaseServlet.class.getName ());

protected EmployeeInfo ei = null;
protected HttpServletRequest request = NULL;
Protected HttpServletResponse response = null;
protected PrintWriter pw = null;

public void Init () throws Servletexception {
}

protected void Doget (HttpServletRequest req, HttpServletResponse resp) throws Servletexception, IOException {
DoPost (req, resp);
}

/**
* 1: Set the global request, response property of this class
* 2: This method calls the Initpage method, inheriting this class of business methods that implement this method
*/
protected void DoPost (HttpServletRequest req, HttpServletResponse resp) {

/* Single, single date, attribution Department start*/
EmployeeInfo ei=new EmployeeInfo ();
String t = req.getparameter ("tt");
if ("AA". Equals (t)) {
for (int i = 0; i<; i++) {
if (i = = 0 | | i = = 5 | | i = = 9) {
ei.setemployeename ("Yang da");
Ei.setid ("JCT000820160324125900009431");
                }
System.out.println (Thread.CurrentThread () + "= =" + Ei.getemployeename ());
try {
Thread.Sleep (+);
} catch (Interruptedexception e) {
e.printstacktrace ();
                }
            }
        }

if ("BB". Equals (t)) {
for (int i = 0; i<; i++) {
if (i = = 0) {
ei.setemployeename ("KK");
Ei.setid ("JCT000820160324125900009431");
                }
System.out.println (Thread.CurrentThread () + "= =" + Ei.getemployeename ());
try {
Thread.Sleep (+);
} catch (Interruptedexception e) {
e.printstacktrace ();
                }
            }
        }
        
Ei.setemployeename ("Han Jiang");
Ei.setid ("JCT000820160324125900001451");

Ei.setemployeename ("Gujon");
Ei.setid ("JCT000820160324125900001463");

Ei.setemployeename ("Shingli");
Ei.setid ("JCT000820160324125900001465");

Ei.setemployeename ("Chenya");
Ei.setid ("JCT000820160324125900001547");

ei.setbelongorg ("Program Accounting section");
Ei.setorgcode ("JCT000320160324121800000117");
Req.getsession (). SetAttribute ("employee", EI);
/* Single, single date, attribution Department end*/
try {
Req.setcharacterencoding ("UTF-8");
Resp.setcharacterencoding ("UTF-8");
Resp.setcontenttype ("text/html");
Request=req;
RESPONSE=RESP;
. Debug ("Login user Information");
Ei= (EmployeeInfo) request.getsession (). getattribute ("employee");
Log.debug ("Logon User Information =" +ei.getid () +ei.getemployeename ());
Initpage (REQ,RESP);
} catch (Exception e) {
E.printstacktrace ();
}
}

public abstract void Initpage (HttpServletRequest request, httpservletresponse response) throws Exception;

/**
* Write data to JSP foreground page to go
* Response content corresponding type is UTF-8
*/
protected void Write (String result) {
PrintWriter pw = null;
try {
Response.setcontenttype ("Text/html;charset=utf-8");
PW = Response.getwriter ();
Pw.write (result);
} catch (IOException e) {
Log.error ("Failed to output results to page:" +e);
E.printstacktrace ();
} finally {
Pw.flush ();
Pw.close ();
Pw=null;
}
}

/**
* Get the value inside the request,
* NULL, value of "" returns ""
*/
Protected string GetParameter (string sourcestr) {
String Str=request.getparameter (SOURCESTR);
if (Str!=null&&str.trim (). Length () >0) {
return str;
}else{
Return "";
}
}

/**
* Cannot share data from request
* URL redirection: can be any URL
* Generally used for users to log off when they return to the main page and jump to other sites and so on
*/
public void Sendredirect (String URL) {
try {
Response.sendredirect (URL);
} catch (Exception e) {
E.printstacktrace ();
Log.error ("servlet jump Page Exception:", E);
}
}

/**
* The browser address bar does not change
* Forward page and forwarded to the page can be in common request data inside
* Page Forwarding: Only other Web Components of the same Web application
* Generally used for user login, according to the role of forwarding to the corresponding module and so on
* Request.setattribute ("user", user); ===jsp==>${user}/request.getattribute ("User")
* Jsp=name=post===>servlet=request.getparameter ("name");
*/
public void ForWord (String URL) {
try {
Request.getrequestdispatcher (URL). Forward (Request,response);
} catch (Exception e) {
E.printstacktrace ();
Log.error ("servlet jump page Exception: url=" +url+ ", request=" +request,e);
}
}

public void Destroy () {
Super.destroy ();
}
}

Java.lang.IllegalStateException:Cannot forward after response have been committed