验证码类型支持（数组计算、字符验证）

ruoyi-admin/src/main/java/com/ruoyi/web/controller/common/CaptchaController.java

@@ -1,16 +1,20 @@
 package com.ruoyi.web.controller.common;
 
-import java.io.ByteArrayOutputStream;
+import java.awt.image.BufferedImage;
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
+import javax.annotation.Resource;
+import javax.imageio.ImageIO;
 import javax.servlet.http.HttpServletResponse;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.util.FastByteArrayOutputStream;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RestController;
+import com.google.code.kaptcha.Producer;
 import com.ruoyi.common.constant.Constants;
 import com.ruoyi.common.core.domain.AjaxResult;
 import com.ruoyi.common.core.redis.RedisCache;
-import com.ruoyi.common.utils.VerifyCodeUtils;
 import com.ruoyi.common.utils.sign.Base64;
 import com.ruoyi.common.utils.uuid.IdUtils;
 
@@ -22,8 +26,18 @@ import com.ruoyi.common.utils.uuid.IdUtils;
 @RestController
 public class CaptchaController
 {
+    @Resource(name = "captchaProducer")
+    private Producer captchaProducer;
+
+    @Resource(name = "captchaProducerMath")
+    private Producer captchaProducerMath;
+
     @Autowired
     private RedisCache redisCache;
+    
+    // 验证码类型
+    @Value("${ruoyi.captchaType}")
+    private String captchaType;
 
     /**
      * 生成验证码
@@ -31,32 +45,42 @@ public class CaptchaController
     @GetMapping("/captchaImage")
     public AjaxResult getCode(HttpServletResponse response) throws IOException
     {
-        // 生成随机字串
-        String verifyCode = VerifyCodeUtils.generateVerifyCode(4);
-        // 唯一标识
+        // 保存验证码信息
         String uuid = IdUtils.simpleUUID();
         String verifyKey = Constants.CAPTCHA_CODE_KEY + uuid;
 
-        redisCache.setCacheObject(verifyKey, verifyCode, Constants.CAPTCHA_EXPIRATION, TimeUnit.MINUTES);
-        // 生成图片
-        int w = 111, h = 36;
-        ByteArrayOutputStream stream = new ByteArrayOutputStream();
-        VerifyCodeUtils.outputImage(w, h, stream, verifyCode);
+        String capStr = null, code = null;
+        BufferedImage image = null;
+
+        // 生成验证码
+        if ("math".equals(captchaType))
+        {
+            String capText = captchaProducerMath.createText();
+            capStr = capText.substring(0, capText.lastIndexOf("@"));
+            code = capText.substring(capText.lastIndexOf("@") + 1);
+            image = captchaProducerMath.createImage(capStr);
+        }
+        else if ("char".equals(captchaType))
+        {
+            capStr = code = captchaProducer.createText();
+            image = captchaProducer.createImage(capStr);
+        }
+
+        redisCache.setCacheObject(verifyKey, code, Constants.CAPTCHA_EXPIRATION, TimeUnit.MINUTES);
+        // 转换流信息写出
+        FastByteArrayOutputStream os = new FastByteArrayOutputStream();
         try
         {
-            AjaxResult ajax = AjaxResult.success();
-            ajax.put("uuid", uuid);
-            ajax.put("img", Base64.encode(stream.toByteArray()));
-            return ajax;
+            ImageIO.write(image, "jpg", os);
         }
-        catch (Exception e)
+        catch (IOException e)
         {
-            e.printStackTrace();
             return AjaxResult.error(e.getMessage());
         }
-        finally
-        {
-            stream.close();
-        }
+
+        AjaxResult ajax = AjaxResult.success();
+        ajax.put("uuid", uuid);
+        ajax.put("img", Base64.encode(os.toByteArray()));
+        return ajax;
     }
 }

ruoyi-admin/src/main/resources/application.yml

@@ -12,6 +12,8 @@ ruoyi:
   profile: D:/ruoyi/uploadPath
   # 获取ip地址开关
   addressEnabled: false
+  # 验证码类型 math 数组计算 char 字符验证
+  captchaType: char
 
 # 开发环境配置
 server: