Java中使用patchca生成超炫的验证码

官网：

/**
   * 验证码
   *
   * @param width 图片宽度
   * @param height 图片高度
   * @param number 验证码数量
   */
  @requestmapping(value = {"/captcha"})
  public void captcha(httpservletrequest request,
            httpservletresponse response, @requestparam("w") int width, @requestparam("h") int height, @requestparam("n") int number) throws ioexception {
    configurablecaptchaservice cs = new configurablecaptchaservice();
    cs.setcolorfactory(new singlecolorfactory(new color(25, 60, 170)));
    cs.setfilterfactory(new curvesripplefilterfactory(cs.getcolorfactory()));
    randomfontfactory ff = new randomfontfactory();
    ff.setminsize(30);
    ff.setmaxsize(30);
    randomwordfactory rwf = new randomwordfactory();
    rwf.setminlength(number);
    rwf.setmaxlength(number);
    cs.setwordfactory(rwf);
    cs.setfontfactory(ff);
    cs.setheight(height);
    cs.setwidth(width);
    response.setcontenttype("image/png");
    response.setheader("cache-control", "no-cache, no-store");
    response.setheader("pragma", "no-cache");
    long time = system.currenttimemillis();
    response.setdateheader("last-modified", time);
    response.setdateheader("date", time);
    response.setdateheader("expires", time);
    servletoutputstream stream = response.getoutputstream();
    string validate_code = encoderhelper.getchallangeandwriteimage(cs,
        "png", stream);
    subject subject = securityutils.getsubject();
    subject.getsession().setattribute(formauthenticationfilter.getcaptchaparam(), validate_code);
    stream.flush();
    stream.close();
  }

以上所述是小编给大家介绍的java中使用patchca生成超炫的验证码 ，希望对大家有所帮助