Request processing failed; nested exception is java.lang.NullPointerException
在控制檯顯示serviceimpl中定義的方法始終空指針錯誤，檢查了很久。 對於這個錯誤在service中少了@Autowired自動注入 修改： 瀏覽器報錯： Type Exception Report Message Request processing failed; nested exception is java.lang.NullPointerException Description
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- 1. Request processing failed; nested exception is java.lang.NullPointerException
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