package com.qm;


import java.awt.Color;  
import java.awt.Font;  
import java.awt.Graphics;  
import java.awt.image.BufferedImage;  
import java.util.Map;  
  
import javax.servlet.http.HttpServletResponse;  
  
import org.apache.struts2.interceptor.ServletResponseAware;  
import org.apache.struts2.interceptor.SessionAware;  
  
import com.opensymphony.xwork2.ActionSupport;  
import com.sun.image.codec.jpeg.JPEGCodec;  
import com.sun.image.codec.jpeg.JPEGImageEncoder;  
  
public class TestAction extends ActionSupport implements SessionAware,ServletResponseAware{  
	private String name;
	private String password;
    private Map<String, Object> session;  
    private HttpServletResponse response;  
    private static final long serialVersionUID = 1L;  
    private String chknumber;  
    @Override  
    public String execute() throws Exception{  
        response.setHeader("Cache-Control", "no-cache");  
        int width=90; //图片宽度  
        int height=26; //图片高度  
        BufferedImage image=new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);  
        Graphics graphics=image.createGraphics();  
        graphics.setColor(this.getColor());   //背景颜色  
        graphics.fillRect(0, 0, width, height);  
        graphics.setFont(new Font("Arial",Font.BOLD,18));  
        graphics.setColor(this.getColor());   //字的颜色  
        String number=String.valueOf(System.currentTimeMillis()%9000+1000);   //生成四位随机数  
        session.put("randomCode", number);     //写入session中  
        graphics.drawString(number, (int)(width*0.3), (int)(height*0.8));  
        graphics.dispose();  
        JPEGImageEncoder encoder=JPEGCodec.createJPEGEncoder(response.getOutputStream());  
        encoder.encode(image);  
        response.getOutputStream().flush();    //刷新到页面生成图片  
        response.getOutputStream().close();    //关闭writer  
        return null;  
    }  
    private Color getColor(){  
        int red=(int)(Math.random()*1000%256);  
        int green=(int)(Math.random()*1000%256);  
        int blue=(int)(Math.random()*1000%256);  
        return new Color(red,green,blue);  
    }
    /**
     * 登陆验证
     * @return
     * @throws Exception
     */
    public String testLogin() throws Exception{  	
        if(session.get("randomCode").equals(chknumber)&& name.equals("admin") && password.equals("admin")){  
           return SUCCESS;  
        }  
        else{  
           return ERROR;  
        }  
    }  
    public String getChknumber(){  
        return chknumber;  
    }  
    public void setChknumber(String chknumber){  
        this.chknumber = chknumber;  
    }  
    public void setSession(Map<String, Object> session){  
        this.session = session;  
    }  
    public void setServletResponse(HttpServletResponse response){  
        this.response = response;  
    }
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}  
}