diff --git a/pom.xml b/pom.xml
index b395525..cc9f5ae 100644
--- a/pom.xml
+++ b/pom.xml
@@ -95,6 +95,24 @@
             <artifactId>commons-lang3</artifactId>
             <version>3.12.0</version>
         </dependency>
+
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt-api</artifactId>
+            <version>0.11.5</version>
+        </dependency>
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt-impl</artifactId>
+            <version>0.11.5</version>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt-gson</artifactId>
+            <version>0.11.5</version>
+            <scope>compile</scope>
+        </dependency>
     </dependencies>
 
     <build>
diff --git a/src/main/java/xyz/playedu/api/service/impl/ImageCaptchaServiceImpl.java b/src/main/java/xyz/playedu/api/service/impl/ImageCaptchaServiceImpl.java
index dbb83cb..5c8d3cb 100644
--- a/src/main/java/xyz/playedu/api/service/impl/ImageCaptchaServiceImpl.java
+++ b/src/main/java/xyz/playedu/api/service/impl/ImageCaptchaServiceImpl.java
@@ -3,12 +3,12 @@ package xyz.playedu.api.service.impl;
 import com.google.code.kaptcha.impl.DefaultKaptcha;
 import jakarta.annotation.Resource;
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Service;
 import org.springframework.util.FastByteArrayOutputStream;
 import xyz.playedu.api.service.ImageCaptchaService;
 import xyz.playedu.api.types.ImageCaptchaResult;
 import xyz.playedu.api.util.Base64Util;
-import xyz.playedu.api.util.EnvUtil;
 import xyz.playedu.api.util.RedisUtil;
 import xyz.playedu.api.util.ToolUtil;
 
@@ -20,6 +20,12 @@ import java.io.IOException;
 @Service
 public class ImageCaptchaServiceImpl implements ImageCaptchaService {
 
+    @Value("${playedu.captcha.cache-prefix}")
+    private String ConfigCachePrefix;
+
+    @Value("${playedu.captcha.expire}")
+    private Long ConfigExpire;
+
     @Resource
     private DefaultKaptcha defaultKaptcha;
 
@@ -37,7 +43,7 @@ public class ImageCaptchaServiceImpl implements ImageCaptchaService {
         image = defaultKaptcha.createImage(imageCaptcha.getCode());
 
         // 写入到redis中
-        RedisUtil.set(getCacheKey(randomKey), imageCaptcha.getCode(), getExpireSeconds());
+        RedisUtil.set(getCacheKey(randomKey), imageCaptcha.getCode(), ConfigExpire);
 
         FastByteArrayOutputStream os = new FastByteArrayOutputStream();
         ImageIO.write(image, "png", os);
@@ -66,10 +72,6 @@ public class ImageCaptchaServiceImpl implements ImageCaptchaService {
     }
 
     private String getCacheKey(String val) {
-        return EnvUtil.get("playedu.captcha.cache-name") + val;
-    }
-
-    private Long getExpireSeconds() {
-        return Long.parseLong(EnvUtil.get("playedu.captcha.expire"));
+        return ConfigCachePrefix + val;
     }
 }
diff --git a/src/main/java/xyz/playedu/api/util/EnvUtil.java b/src/main/java/xyz/playedu/api/util/EnvUtil.java
deleted file mode 100644
index 313d46a..0000000
--- a/src/main/java/xyz/playedu/api/util/EnvUtil.java
+++ /dev/null
@@ -1,37 +0,0 @@
-package xyz.playedu.api.util;
-
-import org.springframework.context.EnvironmentAware;
-import org.springframework.core.env.Environment;
-import org.springframework.stereotype.Component;
-
-/**
- * 系统文件配置操作工具
- */
-@Component
-public class EnvUtil implements EnvironmentAware {
-
-    private static Environment env;
-
-    /**
-     * 设置环境变量
-     *
-     * @author fzr
-     * @param environment 环境变量
-     */
-    @Override
-    public void setEnvironment(Environment environment) {
-        EnvUtil.env = environment;
-    }
-
-    /**
-     * 根据Key获取值
-     *
-     * @author fzr
-     * @param key 键
-     * @return String
-     */
-    public static String get(String key) {
-        return env.getProperty(key);
-    }
-
-}
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 376e155..357360a 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -34,5 +34,5 @@ mybatis-plus:
 playedu:
   captcha:
     expire: 300 #分5钟
-    cache-name: "captcha:key:"
+    cache-prefix: "captcha:key:"