添加e JB中所需的代码来访问顾客信息。
Add the required code in the EJB to access customer information.
如果这个输入框填写了内容，系统会访问顾客的个人档案，系统会提前查找所需的信息。
If this field is filled in, the system will access the customer's rental profile, which the system will retain to pre-populate any required information.
并且如果顾客不能访问你的系统或业务不能进行工作，那么由可靠性或性能问题引起的运作停工就会招致机会成本。
And operational downtime caused by reliability or performance problems can incur opportunity costs if customers are unable to access your system or the business is unable to do its work.
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