【正文】 the mother tea and gruel, and forted her with promises of help, while she dressed the little baby as tenderly as if it had been her own. T he girls meantime spread the table, set the children round the fire, and fed them like so many hungry birds, laughing, talking, and trying to understand the funny broken English. Das ist gut! Die Engel kinder! cried the poor things as they ate and warmed their purple hands at the fortable blaze. T he girls had never been c alled angel children before, and thought it very agreeable, especially Jo, who had been considered a `Sancho39。t give up our girls for a dozen fortunes. Rich or poor, we will keep together and be happy in one another. The old lady wouldn39。t read, run, and ride as much as she liked. A quick temper, sharp tongue, and restless spirit were always getting her into scrapes, and her life wa s a series of ups and downs, which were both ic and pathetic. But the training she received at Aunt March39。s Essays by the hour together. Jo39。s older sisters were just out, and Meg caught frequent glimpses of dainty ball dresses and bouquets, heard lively gossip about theaters, concerts, sleighing parties, and merrymakings of all kinds, and saw money lavished on trifles which w ould have been so precious to her. Poor Meg seldom plained, but a sense of injustice made her feel bitter toward everyone sometimes, for she had not yet learned to know how rich she was in the blessings which alone can m ake life happy. Jo happened to suit Aunt March, who was lame and needed an active person to wait upon her. The childless old lady had offered to adopt one of the girls when the troubles came, and was much offended because her offer was declined. Other friends told the Marches that they had lost all chance of being remembered in the rich old lady39。m glad you began at once , and hope you will keep on. But I want to say one word before we sit down. Not far away from here lies a poor woman with a little newborn baby. Six children are huddled into one bed to keep from freezing, for they have no fire. There is nothing to eat over there, and the oldest boy came to tell me they were suffering hunger and cold. My girls, will you give them your breakfast as a Christmas present? They were all unusually hungry, having waited nearly an hour, and for a minute no one spoke, only a minute, for Jo exclaimed impetuously, I39。, looking troubled. It39。 特此聲明！ 作者簽名： 年 月 日 he new army slippers. How nice my handkerchiefs look, don39。文中除了特別加以標(biāo)注地方外，不包含他人已經(jīng)發(fā)表或撰寫過的研究成果，也不包含為獲得成都信息工程學(xué)院或其他教學(xué)機(jī)構(gòu)的學(xué)位或證書而使用過的材料。通常在 WEBINF目錄下有一個 文件和一個 classes 目錄， 是這個應(yīng)用的配置文件，而 classes 目錄下則包含編譯好的 Servlet 類和 Jsp 或 Servlet所依賴的其它類（如 JavaBean）。 [6] 李洪成 .tomcat與 java Web開發(fā)技術(shù)詳解 [M].上海： 電子工業(yè)出版社 ,2021。 這次的畢業(yè)設(shè)計 選 題 系統(tǒng) 雖然實現(xiàn)了一些功能但是還是存在一些問題和缺陷， 但是我還是通過親自參加畢業(yè)設(shè)計使自己的知識得到提高 ，并且我充分體會到理論與實踐之間的重要聯(lián)系 ，更一步的了解了 JAVA 和數(shù)據(jù)庫的知識。這樣做出來的系統(tǒng)易于維護(hù)。 //存儲郵件 信息 Transport transport = (smtp)。 //MIME 郵件對象 private Session session = null。 /** * 釋放數(shù)據(jù)庫連接 * param conn 欲釋放回連接池的連接 */ Public void freeConnection(Connection conn, String clsName) { try { if (conn != null) { ()。 (200)。 ⑷ 修改：可以修改自己的論文題目以及志愿信息。 圖 9：選題權(quán)限管理圖 審核功能實現(xiàn) ：系主任通過點擊“審核”對教師出的題目進(jìn)行審核（ 見圖10）： （指導(dǎo)教師） ( 指導(dǎo)教師 ) （ 系主任） （學(xué)生） 圖 10：論文題目 審核管理界面 進(jìn)入審核頁面（見圖 11） ： 圖 11：審核界面 教師作為系統(tǒng)的一個用戶，進(jìn)入系統(tǒng)后能進(jìn)行題目的錄入及修改，能對學(xué)生的選題進(jìn)行審核，以及修改自己的個人信息等功能 。我們設(shè)計這系統(tǒng)是考慮的是凍結(jié)用戶帳號而不是刪除它凍結(jié)后系統(tǒng)將 避免不必要 的信息丟失。管理員負(fù)責(zé)添加系主任的信息而系主任負(fù)責(zé)添加指導(dǎo)教師和學(xué)生的信息，當(dāng)系主任添加用戶時會多出一個指導(dǎo)學(xué)生人數(shù)選項，它是限定老師所帶的學(xué)生的人數(shù)。 (login_ip,remoteIp)。 (userNo,userNo)。 1)系統(tǒng)管理 ( = 0) 2)系主任 ( = 1) 3)指導(dǎo)教師 ( = 2) 4)學(xué)生 ( = 3) 系統(tǒng)登陸 為了保證 用戶信息的一致性 、 用戶操作的方便性以及方便系統(tǒng)的安全模塊升級和維護(hù)，該系統(tǒng)采用單點登陸的模式。 (2)教師出題 此部分主要由教師使用 ，教師信息由系主任錄入，教師必須通過系住任給其分配的帳號 ，密碼登陸次系統(tǒng)。 數(shù)據(jù)庫的概念結(jié)構(gòu)設(shè)計完畢以后，現(xiàn)在可以將上面的數(shù)據(jù)庫概念結(jié)構(gòu)轉(zhuǎn)化為某種數(shù)據(jù)庫系統(tǒng)所支持的實際數(shù)據(jù)模型，也就是數(shù)據(jù)庫的邏輯結(jié)構(gòu)。 在信息世界中，信息從客觀事物出發(fā)流經(jīng)數(shù)據(jù)庫，通過決策機(jī)構(gòu)最后又回到客觀世界，信息的這一循環(huán)經(jīng)歷了三個領(lǐng)域：信息世界，數(shù)據(jù)世界，現(xiàn)實世界。同時 JDBC 擴(kuò)展了 Java 的功能。 SUN 公司開發(fā)出這個規(guī)范來整合和平衡已經(jīng)存在的規(guī)范，對JAVA 編程環(huán)境進(jìn)行支持的技術(shù)和工具。除此之外，作為 Java 平臺的一部分， JSP 擁有 Java 語言 “ 一次編寫，各處運行 ” 的特點。在用戶機(jī)上不需要安裝任何應(yīng)用程序，應(yīng)用程序可以安裝在 作為服務(wù)器 的計算機(jī)上， 題目 存放在數(shù)據(jù)庫服務(wù)器上（事務(wù)層和數(shù)據(jù)庫可以是同一臺機(jī)器） ?；?Web 技術(shù)的網(wǎng)絡(luò)選題系統(tǒng)可以借助于遍布全球的 Inter 進(jìn)行 ,因此選題既可以在本地進(jìn)行 ,也可以在異地進(jìn)行 ,大 大拓展了選題的靈活性。 Multistage role management. 目 錄 論文總頁數(shù)： 23頁 1引言 ...................................................................... 3 .................................................... 3 ................................................ 3 2基本技術(shù)簡介 .............................................................. 3 （技術(shù)） ........................................ 4 .......................................................... 4 3 需求分析與方案設(shè)計 ....................................................... 5 .......................................................... 5 ............................................................ 5 .......................................................... 6 4系統(tǒng)設(shè)計 .................................................................. 6 功能設(shè)計 ............................................................. 6 數(shù)據(jù)庫設(shè)計 ........................................................... 6 系統(tǒng)登陸，用戶會話表 (bsm_session_info) ............................ 6 系統(tǒng)用戶信息管理表（ bsm_sys_user） ................................ 7 畢業(yè)論文題庫信息表 (subject) ....................................... 7 畢業(yè)論文選題信 息管理表 (select_sub) ................................ 8 5 系統(tǒng)功能實現(xiàn) ............................................................. 9 .................................................. 9 ..................................................... 10 系統(tǒng)登陸 ........................................................ 11 ..................................................... 13 歷屆信息查看 ..................