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Through the management of the connection pool, the sharing of database connections is realized, and the connection does not need to be recreated every time, thus saving the overhead of database recreation and improving the performance of the system!1930年，十三岁的林语慧因为是庶出而失去母亲，跟着养母从上海到了南京。为了生计，每日陪着养父沿着秦淮河畔寻觅生计，五年后的偶遇父亲的故友陈默人，被带进新的家庭，与陈沛文兄妹及仆人高伯之孙——高金榜相识，以一个普通女孩的身份继续着忍辱负重的生活。因为父亲林楚沧与陈默人有过指腹为婚之约，她只好将与高金榜的爱情深埋于心，在日寇的铁蹄踏遍南京之时，用孱弱的肩膀挑起了救助难民、保护至死不做汉奸的陈默人的大任。令她未曾想到的是，一直不愿接纳的未婚夫积极走向革命，曾经深爱的人却一步步成为民族的敌人。她在强敌遍布四周的南京，巧设计谋除去民族的敌人；又以民族大义鼓励向自己表达真爱的未婚夫走上更广阔的革命之路。林语慧，一个秦淮河畔的普通女孩，以平凡的歌声唱响了战争年代的南京爱情故事这种时候还说我的运势？祸兮福所倚，福兮祸所伏。Tee和Fuse成立三周年之际，在海滩上度过了一次难忘的旅行，并一起回忆起了自己的童年。故事讲述了东北一所大学，五位同学之间的爆笑故事。这里有沙雕男友的欠揍日常、蠢到流泪的钢铁直男以及被气到“黑化”的班主任，每个故事都能让人笑出腹肌。Then we can encapsulate a written examination method with the following code:Note: The above codes are all done according to the book. They all read the code of the book. The most important thing is that we understand the implementation of the policy mode. For example, the above form verification function is the code packaged in this way. We usually use JQuery plug-in form verification code to be packaged in this way. Therefore, we can also use this method to package forms and other learning in the future.