feat(streamProxy): 实现camera_code自动生成和查询逻辑

核心变更:
1. 新增 generateCameraCode() 方法：生成格式为 cam_xxxxxxxxxxxx 的唯一编码
2. 修改 add() 方法：
   - 自动生成 camera_code 并设置 app = camera_code
   - 实现重试机制（最多3次）处理唯一键冲突
   - 确保 ZLM URL 路径为纯 ASCII，避免中文编码问题
3. 实现 getStreamProxyByCameraCode() 方法：根据 camera_code 查询代理对象

技术细节:
- 添加 UUID 和 DuplicateKeyException 依赖
- 使用事务确保数据一致性
- 空值检查防止空指针异常

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/main/java/com/genersoft/iot/vmp/streamProxy/service/impl/StreamProxyServiceImpl.java

@@ -29,6 +29,7 @@ import com.github.pagehelper.PageInfo;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.event.EventListener;
+import org.springframework.dao.DuplicateKeyException;
 import org.springframework.jdbc.datasource.DataSourceTransactionManager;
 import org.springframework.scheduling.annotation.Async;
 import org.springframework.stereotype.Service;
@@ -41,6 +42,7 @@ import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.UUID;
 
 /**
  * 视频代理业务
@@ -73,6 +75,15 @@ public class StreamProxyServiceImpl implements IStreamProxyService {
     @Autowired
     TransactionDefinition transactionDefinition;
 
+    /**
+     * 生成唯一的 camera_code
+     * 格式：cam_xxxxxxxxxxxx（12位随机字符）
+     * @return 唯一的 camera_code
+     */
+    private String generateCameraCode() {
+        return "cam_" + UUID.randomUUID().toString().replace("-", "").substring(0, 12);
+    }
+
     /**
      * 流到来的处理
      */
@@ -143,14 +154,33 @@ public class StreamProxyServiceImpl implements IStreamProxyService {
         if (streamProxyInDb != null) {
             throw new ControllerException(ErrorCode.ERROR100.getCode(), "APP+STREAM已经存在");
         }
-        if (streamProxy.getGbDeviceId() != null) {
-            gbChannelService.add(streamProxy.buildCommonGBChannel());
+
+        // 自动生成 camera_code（最多重试3次避免冲突）
+        int retryCount = 0;
+        while (retryCount < 3) {
+            String cameraCode = generateCameraCode();
+            streamProxy.setCameraCode(cameraCode);
+            // 强制设置 app = camera_code（确保 ZLM URL 纯 ASCII）
+            streamProxy.setApp(cameraCode);
+
+            streamProxy.setCreateTime(DateUtil.getNow());
+            streamProxy.setUpdateTime(DateUtil.getNow());
+
+            try {
+                if (streamProxy.getGbDeviceId() != null) {
+                    gbChannelService.add(streamProxy.buildCommonGBChannel());
+                }
+                streamProxyMapper.add(streamProxy);
+                streamProxy.setDataType(ChannelDataType.STREAM_PROXY);
+                streamProxy.setDataDeviceId(streamProxy.getId());
+                return;
+            } catch (DuplicateKeyException e) {
+                retryCount++;
+                if (retryCount >= 3) {
+                    throw new RuntimeException("生成 camera_code 失败，请重试");
+                }
+            }
         }
-        streamProxy.setCreateTime(DateUtil.getNow());
-        streamProxy.setUpdateTime(DateUtil.getNow());
-        streamProxyMapper.add(streamProxy);
-        streamProxy.setDataType(ChannelDataType.STREAM_PROXY);
-        streamProxy.setDataDeviceId(streamProxy.getId());
     }
 
     @Override
@@ -380,4 +410,12 @@ public class StreamProxyServiceImpl implements IStreamProxyService {
         return streamProxyMapper.select(id);
     }
 
+    @Override
+    public StreamProxy getStreamProxyByCameraCode(String cameraCode) {
+        if (ObjectUtils.isEmpty(cameraCode)) {
+            return null;
+        }
+        return streamProxyMapper.selectByCameraCode(cameraCode);
+    }
+
 }