义瑞扫码验证

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2023-10-08 a966b5abe5fb804464fe1cd09053a03fe94877fd

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package com.mandi.common;
 
import java.io.IOException;
import java.util.UUID;
 
import javax.faces.context.FacesContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
/**
 * 封装了部分JSF的接口
 * @author Administrator
 *
 */
public class JSFMethod {
    public static HttpSession getSession()
    {
        FacesContext context=FacesContext.getCurrentInstance();
        if(context==null)
            return null;
        return (HttpSession)context.getExternalContext().getSession(true);
    }
    public static HttpServletRequest getRequest()
    {
        FacesContext context=FacesContext.getCurrentInstance();
        if(context==null)
            return null;
        return (HttpServletRequest)context.getExternalContext().getRequest();
    }
    public static HttpServletResponse getResponse()
    {
        FacesContext context=FacesContext.getCurrentInstance();
        if(context==null)
            return null;
        return (HttpServletResponse)context.getExternalContext().getResponse();
    }
    public static void facesexit()
    {
        FacesContext context=FacesContext.getCurrentInstance();
        if(context!=null)
        {
            context.responseComplete();
        }
    }
    public static void faceswrite(String data){
        FacesContext context=FacesContext.getCurrentInstance();
        if(context!=null)
        {
            HttpServletResponse response=(HttpServletResponse)context.getExternalContext().getResponse();
            try {
                response.getWriter().print(data);
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }finally{
                context.responseComplete();
            }
            
        }
    }
    public static void facesredirect(String source)
    {
        FacesContext context=FacesContext.getCurrentInstance();
        if(context!=null)
        {
            try {
                context.getExternalContext().redirect(source);
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            context.responseComplete();
        }
    }
    public static void facesdispatch(String source){
        FacesContext context=FacesContext.getCurrentInstance();
        if(context!=null)
        {
            try {
                context.getExternalContext().dispatch(source);
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            context.responseComplete();
        }
    }
    /**
     *  The token in client is:ctoken
     * @return
     */
    public static boolean createToken()
    {
        String ss=UUID.randomUUID().toString();
        HttpSession session=getSession();
        if(session!=null)
        {
            session.setAttribute("stoken", ss);
            return true;
        }
        return false;
    }
    public static boolean checkToken(){
        HttpServletRequest request=getRequest();
        HttpSession session=getSession();
        if(request==null||session==null)
            return false;
        String ctoken=request.getParameter("ctoken");
        Object stoken=session.getAttribute("stoken");
        String ss=UUID.randomUUID().toString();
        session.setAttribute("stoken", ss);
        if(stoken!=null&& ctoken!=null &&ctoken.equals(stoken.toString()))
        {
            return true;
        }
        return false;
    }
    /**
     * certyfi in client is:
     * @return
     */
    public static boolean checkCertifyCode(String clientname,String servername)
    {
        HttpServletRequest request=getRequest();
        HttpSession session=getSession();
        if(request==null||session==null)
            return false;
        Object obj=session.getAttribute(servername);
        if(obj==null)
            return false;
        Object obj1=request.getParameter(clientname);
        if(obj1==null)
            return false;
        String str1=obj1.toString().toLowerCase();
        if(obj.equals(str1))
            return true;
        return false;
    }
}