feat: 优化后台UI

api/handler/admin/captcha_handler.go

@@ -0,0 +1,41 @@
+package admin
+
+import (
+	"chatplus/core"
+	"chatplus/handler"
+	"chatplus/utils/resp"
+	"github.com/gin-gonic/gin"
+	"github.com/mojocn/base64Captcha"
+)
+
+type CaptchaHandler struct {
+	handler.BaseHandler
+}
+
+func NewCaptchaHandler(app *core.AppServer) *CaptchaHandler {
+	h := CaptchaHandler{}
+	h.App = app
+	return &h
+}
+
+type CaptchaVo struct {
+	CaptchaId string `json:"captcha_id"`
+	PicPath   string `json:"pic_path"`
+}
+
+// GetCaptcha 获取验证码
+func (h *CaptchaHandler) GetCaptcha(c *gin.Context) {
+	var captchaVo CaptchaVo
+	driver := base64Captcha.NewDriverDigit(48, 130, 4, 0.4, 10)
+	cp := base64Captcha.NewCaptcha(driver, base64Captcha.DefaultMemStore)
+	// b64s是图片的base64编码
+	id, b64s, err := cp.Generate()
+	if err != nil {
+		resp.ERROR(c, "生成验证码错误!")
+		return
+	}
+	captchaVo.CaptchaId = id
+	captchaVo.PicPath = b64s
+
+	resp.SUCCESS(c, captchaVo)
+}