diff --git a/pom.xml b/pom.xml
index 5b0aae6..1034063 100644
--- a/pom.xml
+++ b/pom.xml
@@ -55,20 +55,20 @@
             <artifactId>reactor-test</artifactId>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>org.jasig.cas</groupId>
-            <artifactId>cas-client-core</artifactId>
-            <version>3.1.12</version>
-            <scope>system</scope>
-            <systemPath>${project.basedir}/lib/cas-client-core-3.1.12.jar</systemPath>
-        </dependency>
-        <dependency>
-            <groupId>edu.yale.its</groupId>
-            <artifactId>cas-client-java</artifactId>
-            <version>7.0.8</version>
-            <scope>system</scope>
-            <systemPath>${project.basedir}/lib/sso-client-java-7.0.8.jar</systemPath>
-        </dependency>
+<!--        <dependency>-->
+<!--            <groupId>org.jasig.cas</groupId>-->
+<!--            <artifactId>cas-client-core</artifactId>-->
+<!--            <version>3.1.12</version>-->
+<!--            <scope>system</scope>-->
+<!--            <systemPath>${project.basedir}/lib/cas-client-core-3.1.12.jar</systemPath>-->
+<!--        </dependency>-->
+<!--        <dependency>-->
+<!--            <groupId>edu.yale.its</groupId>-->
+<!--            <artifactId>cas-client-java</artifactId>-->
+<!--            <version>7.0.8</version>-->
+<!--            <scope>system</scope>-->
+<!--            <systemPath>${project.basedir}/lib/sso-client-java-7.0.8.jar</systemPath>-->
+<!--        </dependency>-->
 
     </dependencies>
 
diff --git a/src/main/java/dev/flyfish/boot/cas/controller/IndexController.java b/src/main/java/dev/flyfish/boot/cas/controller/IndexController.java
index 3e0d3cf..2041f56 100644
--- a/src/main/java/dev/flyfish/boot/cas/controller/IndexController.java
+++ b/src/main/java/dev/flyfish/boot/cas/controller/IndexController.java
@@ -1,16 +1,20 @@
 package dev.flyfish.boot.cas.controller;
 
 import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
-import java.util.HashMap;
+import java.util.Map;
 
 @RestController
 public class IndexController {
 
+    @GetMapping("/")
+    public String index() {
+        return "Hello World!";
+    }
+
     @GetMapping("/hello")
-    public Object index() {
-        return new HashMap<>();
+    public Object hello() {
+        return Map.of("message", "Hello World!");
     }
 }
diff --git a/src/main/java/dev/flyfish/boot/cas/filter/CASContext.java b/src/main/java/dev/flyfish/boot/cas/filter/CASContext.java
index d3f61e3..22b13ee 100644
--- a/src/main/java/dev/flyfish/boot/cas/filter/CASContext.java
+++ b/src/main/java/dev/flyfish/boot/cas/filter/CASContext.java
@@ -5,6 +5,7 @@ import lombok.Getter;
 import lombok.RequiredArgsConstructor;
 import lombok.Setter;
 import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.server.reactive.ServerHttpRequest;
 import org.springframework.http.server.reactive.ServerHttpResponse;
@@ -66,7 +67,10 @@ public class CASContext {
     }
 
     Mono<Void> redirect(String url) {
-        return chain.filter(exchange.mutate().request(builder -> builder.uri(URI.create(url))).build());
+        ServerHttpResponse response = exchange.getResponse();
+        response.setRawStatusCode(HttpStatus.FOUND.value());
+        response.getHeaders().setLocation(URI.create(url));
+        return chain.filter(exchange.mutate().response(response).build());
     }
 
     ServerHttpRequest getRequest() {
diff --git a/src/main/java/dev/flyfish/boot/cas/filter/CASFilter.java b/src/main/java/dev/flyfish/boot/cas/filter/CASFilter.java
index 411a6a7..8f8b1ce 100644
--- a/src/main/java/dev/flyfish/boot/cas/filter/CASFilter.java
+++ b/src/main/java/dev/flyfish/boot/cas/filter/CASFilter.java
@@ -193,7 +193,7 @@ public class CASFilter implements WebFilter {
 
         if (StringUtils.hasText(sessionId)) {
             String appId = parameter.casServerName + request.getPath().contextPath().value();
-            casLoginString.append("&appId=").append(appId)
+            casLoginString.append("&appId=").append(URLEncoder.encode(appId, StandardCharsets.UTF_8))
                     .append("&sessionId=").append(sessionId);
         }
 
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 9530c01..abb42bc 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -1,5 +1,5 @@
 server:
-  port: 8080
+  port: 8888
 
 spring:
   application:
@@ -9,5 +9,6 @@ cas:
   filter:
     cas-login: https://sdsfzt.sxu.edu.cn/authserver/login
     cas-validate: https://sdsfzt.sxu.edu.cn/authserver/serviceValidate
-    cas-server-name: 127.0.0.1:8080
+    cas-server-name: aef8-218-26-163-214.ngrok-free.app
     cas-init-context-class: dev.flyfish.boot.cas.filter.CASLoginFilter
+debug: true