今天在整合SSM框架中,內容是從數據庫中讀取所有商品信息,寫完之后一測試,服務器一直報nested exception is java.lang.NullPointerException錯誤,然后瀏覽器 報500,最后終於找到問題的所在,原來是在springMvc的controller中注入Servcie時沒有加上注解@Resource,這樣在配置文件中就無法讀取到信息所以報錯,加上之后問題解決,下面是一些截圖及代碼展示:
1.報錯時的代碼及瀏覽器截圖
2.修改后的代碼及截圖展示
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