基于SSH2框架下的 用户注册 验证码功能

jsp页面：

             <tr>                <th width="320" >验证码：</th>                 <td width="741" >                  <s:textfield key="registerInfoBean.checkNumber" cssClass="inputtext" data-rule-required="true" />                 <img id="chkNumber" src="registerChkNumber.action" />                </td>              </tr>

js:

   //验证码    $("#chkNumber").click(function(){        var timenow = new Date().getTime();          $(this).attr("src", "registerChkNumber.action?d="+timenow);                    });

struts.xml文件配置;

        <action name="registerChkNumber" class="registerAction" method="getChkNumber">           <result type="stream">                  <param name="contentType">image/jpeg</param>                  <param name="inputtName">inputStream</param>              </result>      </action>

Action处理:

  

   //输出流      private ByteArrayInputStream inputStream;        /**          * 验证码获取          *          */            public String getChkNumber(){                      this.setInputStream(this.registerService.getChkNumber());            return SUCCESS;           }

Service实现类方法：

    /**     * 获取验证码     */    public ByteArrayInputStream  getChkNumber(){         int width = 85, height = 25;              BufferedImage image = new  BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);              Graphics g = image.getGraphics();              Random random = new Random();              g.setColor(getRandColor(200, 255));              g.fillRect(0, 0, width, height);                            g.setFont(new Font("Times New Roman", Font.PLAIN, 18));              g.setColor(getRandColor(160, 200));              for(int i = 0; i < 155; i++)              {                  int x1 = random.nextInt(width);                  int y1 = random.nextInt(height);                  int x2 = random.nextInt(12);                  int y2 = random.nextInt(12);                  g.drawLine(x1, y1, x2, y2);              }                            String sRand = "";              for(int i = 0; i < 6; i++)              {                  String rand = getRandomChar();                  sRand += rand;                  g.setColor(new Color(20 + random.nextInt(110), 20 + random.nextInt(110), 20 + random.nextInt(110)));                  g.drawString(rand, 13*i+6, 16);              }            //存进session,用于验证              ActionContext.getContext().getSession().put("randomImg", sRand.toLowerCase());            g.dispose();              ByteArrayOutputStream output = new ByteArrayOutputStream();              ImageOutputStream imageOut;            try {                imageOut = ImageIO.createImageOutputStream(output);                ImageIO.write(image, "JPEG", imageOut);                  imageOut.close();            } catch (IOException e) {                e.printStackTrace();            }              ByteArrayInputStream input = new ByteArrayInputStream(output.toByteArray());            return input;      }        //颜色    public Color getRandColor(int fc, int bc){        Random random = new Random();          if(fc > 255) fc = 255;          if(bc > 255) bc = 255;          int r = fc + random.nextInt(bc - fc);          int g = fc + random.nextInt(bc - fc);          int b = fc + random.nextInt(bc - fc);          return new Color(r, g, b);    }        //产生随机数    public String getRandomChar(){        int rand = (int)Math.round(Math.random() * 2);          long itmp = 0;          char ctmp = '\u0000';          switch (rand)          {               case 1:                    itmp = Math.round(Math.random() * 25 + 65);                    ctmp = (char)itmp;                    return String.valueOf(ctmp);               case 2:                    itmp = Math.round(Math.random() * 25 + 97);                    ctmp = (char)itmp;                    return String.valueOf(ctmp);               default :                    itmp = Math.round(Math.random() * 9);                          }          return String.valueOf(itmp);      }

验证提交验证码是否正确

        //判断验证码是否正确        if(registerInfo.getCheckNumber().toLowerCase().equals(                ActionContext.getContext().getSession().get("randomImg"))){             //   正确后的业务处理代码}