Responsibility Chain Design Model

package com.huawei.oss.filter;

Public interface Filter {

void Dofilter (Request request,response response,filterchain chain);
}

package com.huawei.oss.filter;

Public class Facefilter implements Filter {

 

public void Dofilter (Request request, Response Response,filterchain chain) {
Request.requeststr=request.requeststr.replace ("<", "{"). Replace (">", "}") + "---->facefilter";
Chain.dofilter (Request,response,chain);
Response.responsestr + = "---->facefilterresponse";

}

}

package com.huawei.oss.filter;

Public class Htmlfilter implements Filter {

 

public void Dofilter (Request request, Response Response,filterchain chain) {
Request.requeststr=request.requeststr.replace ("Java", "O (∩_∩) o~") + "---->htmlfilterrequest";
Chain.dofilter (Request,response,chain);
Response.responsestr + = "--->htmlfilterresponse";
}

}

package com.huawei.oss.filter;

Public class Sessionfilter implements filter{

public void Dofilter (Request request, Response Response,filterchain chain) {
Request.requeststr=request.requeststr.replace ("Job search", "employment") + "--------->sessionfilter";
Chain.dofilter (Request,response,chain);
Response.responsestr + = "---->sessionfilterresponse";
}

}

Package com.huawei.oss.filter;

Import java.util.*;

public class Filterchain implements Filter {

private int index = 0;

Private list<filter> filters = new arraylist<filter> ();

Public Filterchain addfilter (Filter f)
{
This.filters.add (f);
return this;
}

public void Dofilter (Request request, Response Response,filterchain chain)
{
if (index = = filters.size ())
{
Return
}

Filter f = filters.get (index);
Index + +;
F.dofilter (Request,response,chain);
}

}

Package com.huawei.oss.filter;

public class Request {
String Requeststr;

Public String Getrequeststr () {
return requeststr;
}

public void Setrequeststr (String requeststr) {
This.requeststr = Requeststr;
}

}

Package com.huawei.oss.filter;

public class Response {
String Responsestr;

Public String Getresponsestr () {
return responsestr;
}

public void Setresponsestr (String responsestr) {
This.responsestr = Responsestr;
}

}

Package com.huawei.oss.filter;

public class Test {

/**
* @param args
*/
public static void Main (string[] args) {
String msg = "Now the society is difficult to find a job,<java> to find work wages high";

Request Request = new request ();
REQUEST.SETREQUESTSTR (msg);

Response Response = new Response ();
RESPONSE.SETRESPONSESTR ("response");
Filterchain chain = new Filterchain ();
Chain.addfilter (New Htmlfilter ())
. addfilter (New Facefilter ())
. addfilter (New Sessionfilter ());
Chain.dofilter (Request,response,chain);
System.out.println (Request.getrequeststr ());
System.out.println (Response.getresponsestr ());


}

}