fix(接口测试): 修复接口列表环境为空报错的缺陷

backend/src/main/java/io/metersphere/api/service/ApiDefinitionEnvService.java

@@ -6,6 +6,7 @@ import io.metersphere.base.domain.ApiTestEnvironmentExample;
 import io.metersphere.base.mapper.ApiDefinitionEnvMapper;
 import io.metersphere.base.mapper.ApiTestEnvironmentMapper;
 import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.lang3.StringUtils;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -42,12 +43,14 @@ public class ApiDefinitionEnvService {
 
         if (CollectionUtils.isNotEmpty(list)) {
             ApiTestEnvironmentExample environmentExample = new ApiTestEnvironmentExample();
+            if (StringUtils.isNotEmpty(list.get(0).getEnvId())) {
                 environmentExample.createCriteria().andProjectIdEqualTo(projectId).andIdEqualTo(list.get(0).getEnvId());
                 long count = apiTestEnvironmentMapper.countByExample(environmentExample);
                 if (count > 0) {
                     return list.get(0);
                 }
             }
+        }
         return null;
     }