Struts Problem Report 之 java.lang.NullPointerException异常处理

Struts Problem Report

Struts has detected an unhandled exception:

Messages:
File: net/shopxx/action/admin/CustomerAction.java
Line number: 95
Stacktraces

java.lang.NullPointerException

异常排除： public void setCustomer(Customer customer) {
     this.customer = customer;
        }
把setCustomer()方法名写成了setTrade(),所以出错了。