update

mec-biz/src/main/java/com/ym/mec/biz/service/impl/StudentManageServiceImpl.java

@@ -292,7 +292,7 @@ public class StudentManageServiceImpl implements StudentManageService {
             throw new BizException("参数校验失败");
         }
         SysUser sysUser1 = sysUserFeignService.queryUserByMobile(sysUser.getPhone());
-        if(sysUser1 == null){
+        if(sysUser1 != null){
             throw new BizException("手机号已被占用");
         }
         sysUser.setUserType(SysUserType.STUDENT);