fix column is_nav

Helius

2022-07-04 6b24c62e68ef5e8063d99e8f1b780ee002bbc920

 src/main/java/com/xcong/farmer/cms/modules/system/util/CaptchaUtil.java

@@ -55,7 +55,7 @@
    }

    public BufferedImage creatImage(String code) {
        int width = 160, height = 50;
        int width = 150, height = 42;
        //生成随机类
        Random random = new Random();
        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);