作java以來第一次遇到內存溢出的狀況，剛開始是一臉懵逼的！java
我的發現java會出現內存溢出的狀況，其緣由是：死循環、過深的遞歸（包括本身調用本身的部分狀況，本身調用本身有時會陷入遞歸出不來）spring
解決辦法：找到報錯的那一行，消除死循環或者過深的遞歸便可！
mvc
報錯信息：code
嚴重: Servlet.service() for servlet [springmvc] in context with path [/OABase] threw exception [Handler processing failed; nested exception is java.lang.StackOverflowError] with root cause java.lang.StackOverflowError at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) at com.mfc.dao.CheckinginDaoImpl.getCheckinginDetails(CheckinginDaoImpl.java:33) ..................................................