🎨 Fix StackOverflowError in WxCpRedissonConfigImpl and WxCpRedisTemplateConfigImpl toString() methods

weixin-java-cp/src/main/java/me/chanjar/weixin/cp/config/impl/AbstractWxCpInRedisConfigImpl.java

@@ -180,4 +180,17 @@ public abstract class AbstractWxCpInRedisConfigImpl extends WxCpDefaultConfigImp
     Long expire = redisOps.getExpire(this.agentJsapiTicketKey);
     return expire == null || expire < 2;
   }
+
+  @Override
+  public String toString() {
+    return "AbstractWxCpInRedisConfigImpl{" +
+      "corpId='" + getCorpId() + '\'' +
+      ", agentId=" + getAgentId() +
+      ", keyPrefix='" + keyPrefix + '\'' +
+      ", accessTokenKey='" + accessTokenKey + '\'' +
+      ", jsapiTicketKey='" + jsapiTicketKey + '\'' +
+      ", agentJsapiTicketKey='" + agentJsapiTicketKey + '\'' +
+      ", lockKey='" + lockKey + '\'' +
+      '}';
+  }
 }

weixin-java-cp/src/test/java/me/chanjar/weixin/cp/config/impl/DemoToStringFix.java

@@ -0,0 +1,66 @@
+package me.chanjar.weixin.cp.config.impl;
+
+import me.chanjar.weixin.common.redis.WxRedisOps;
+
+/**
+ * Demonstration of the fix for toString() StackOverflowError issue
+ */
+public class DemoToStringFix {
+    
+    public static void main(String[] args) {
+        System.out.println("=== Demonstrating toString() Fix for WxCp Redis Config ===");
+        
+        // Create a simple stub WxRedisOps implementation for testing
+        WxRedisOps stubRedisOps = new WxRedisOps() {
+            @Override
+            public String getValue(String key) { return null; }
+            @Override
+            public void setValue(String key, String value, int expire, java.util.concurrent.TimeUnit timeUnit) {}
+            @Override
+            public Long getExpire(String key) { return null; }
+            @Override
+            public void expire(String key, int expire, java.util.concurrent.TimeUnit timeUnit) {}
+            @Override
+            public java.util.concurrent.locks.Lock getLock(String key) { return null; }
+        };
+        
+        // Test AbstractWxCpInRedisConfigImpl directly with our stub
+        AbstractWxCpInRedisConfigImpl config = new AbstractWxCpInRedisConfigImpl(stubRedisOps, "demo:") {
+            // Anonymous class to test the abstract parent
+        };
+        
+        config.setCorpId("demoCorpId");
+        config.setAgentId(1001);
+        
+        System.out.println("Testing toString() method:");
+        try {
+            String result = config.toString();
+            System.out.println("✓ Success! toString() returned: " + result);
+            System.out.println("✓ No StackOverflowError occurred");
+            
+            // Verify the result contains expected information and excludes redisOps
+            boolean containsCorpId = result.contains("demoCorpId");
+            boolean containsAgentId = result.contains("1001");
+            boolean containsKeyPrefix = result.contains("demo:");
+            boolean excludesRedisOps = !result.contains("redisOps") && !result.contains("WxRedisOps");
+            
+            System.out.println("✓ Contains corpId: " + containsCorpId);
+            System.out.println("✓ Contains agentId: " + containsAgentId);
+            System.out.println("✓ Contains keyPrefix: " + containsKeyPrefix);
+            System.out.println("✓ Excludes redisOps: " + excludesRedisOps);
+            
+            if (containsCorpId && containsAgentId && containsKeyPrefix && excludesRedisOps) {
+                System.out.println("✓ All validations passed!");
+            } else {
+                System.out.println("✗ Some validations failed");
+            }
+            
+        } catch (StackOverflowError e) {
+            System.out.println("✗ StackOverflowError still occurred - fix failed");
+        } catch (Exception e) {
+            System.out.println("✗ Unexpected error: " + e.getMessage());
+        }
+        
+        System.out.println("\n=== Demo completed ===");
+    }
+}