å¸¸ç”¨JavaåŠŸèƒ½ä»£ç </h1> <p>Xing — Tue, 08 May 2012 12:15:00 GMT</p> é˜…è¯»å…¨æ–‡<br><br><div align="right"><a style="text-decoration:none;" href="http://www.aygfsteel.com/XingXing/" target="_blank">Xing</a> 2012-05-08 20:15 <a href="http://www.aygfsteel.com/XingXing/archive/2012/05/08/377635.html#Feedback" target="_blank" style="text-decoration:none;">å‘è¡¨è¯„è®º</a></div>]]> </article> <article> <h1>JDBCæ‰§è¡Œè„šæœ¬æ–‡äšg</h1> <p>Xing — Tue, 08 May 2012 11:57:00 GMT</p> <span style="color: #008080; "> 1</span> <span style="color: #000000; ">è°ƒç”¨JDBC API executeBatchåQˆï¼‰æ–ÒŽ(gu¨©)³•ã€?br /></span><span style="color: #008080; "> 2</span> <span style="color: #000000; ">ä¸çŸ¥é“æœ‰æ²¡æœ‰ç›´æŽ¥è°ƒç”¨sqlplus çš„APIã€‚ã€?br /></span><span style="color: #008080; "> 3</span> <span style="color: #000000; ">sqlplus username</span><span style="color: #000000; ">/</span><span style="color: #000000; ">pwd@oracle @</span><span style="color: #000000; ">1</span><span style="color: #000000; ">.sql<br></span><span style="color: #008080; "> 4</span> <span style="color: #000000; "><br></span><span style="color: #008080; "> 5</span> <span style="color: #000000; "></span><span style="color: #0000FF; ">import</span><span style="color: #000000; "> java.sql.</span><span style="color: #000000; ">*</span><span style="color: #000000; ">;<br></span><span style="color: #008080; "> 6</span> <span style="color: #000000; "></span><span style="color: #0000FF; ">import</span><span style="color: #000000; "> java.awt.</span><span style="color: #000000; ">*</span><span style="color: #000000; ">;<br></span><span style="color: #008080; "> 7</span> <span style="color: #000000; "></span><span style="color: #0000FF; ">import</span><span style="color: #000000; "> java.util.List;<br></span><span style="color: #008080; "> 8</span> <span style="color: #000000; "></span><span style="color: #0000FF; ">import</span><span style="color: #000000; "> java.util.ArrayList;<br></span><span style="color: #008080; "> 9</span> <span style="color: #000000; "></span><span style="color: #0000FF; ">import</span><span style="color: #000000; "> java.io.</span><span style="color: #000000; ">*</span><span style="color: #000000; ">;<br></span><span style="color: #008080; ">10</span> <span style="color: #000000; "></span><span style="color: #0000FF; ">import</span><span style="color: #000000; "> java.lang.</span><span style="color: #000000; ">*</span><span style="color: #000000; ">;<br></span><span style="color: #008080; ">11</span> <span style="color: #000000; "><br></span><span style="color: #008080; ">12</span> <span style="color: #000000; "></span><span style="color: #0000FF; ">public</span><span style="color: #000000; "> </span><span style="color: #0000FF; ">class</span><span style="color: #000000; "> Test {<br></span><span style="color: #008080; ">13</span> <span style="color: #000000; "><br></span><span style="color: #008080; ">14</span> <span style="color: #000000; "> </span><span style="color: #008000; ">/**</span><span style="color: #008000; "><br></span><span style="color: #008080; ">15</span> <span style="color: #008000; "> * </span><span style="color: #808080; ">@param</span><span style="color: #008000; "> args the command line arguments<br></span><span style="color: #008080; ">16</span> <span style="color: #008000; "> </span><span style="color: #008000; ">*/</span><span style="color: #000000; "><br></span><span style="color: #008080; ">17</span> <span style="color: #000000; "> </span><span style="color: #0000FF; ">public</span><span style="color: #000000; "> Test() {<br></span><span style="color: #008080; ">18</span> <span style="color: #000000; "> </span><span style="color: #0000FF; ">try</span><span style="color: #000000; "> {<br></span><span style="color: #008080; ">19</span> <span style="color: #000000; "> Class.forName(</span><span style="color: #000000; ">"</span><span style="color: #000000; ">sun.jdbc.odbc.JdbcOdbcDriver</span><span style="color: #000000; ">"</span><span style="color: #000000; ">);<br></span><span style="color: #008080; ">20</span> <span style="color: #000000; "> } </span><span style="color: #0000FF; ">catch</span><span style="color: #000000; "> (Exception e) {<br></span><span style="color: #008080; ">21</span> <span style="color: #000000; "> System.out.println(</span><span style="color: #000000; ">"</span><span style="color: #000000; ">åŠ è²é©±åŠ¨½E‹åºå‡ºé”™</span><span style="color: #000000; ">"</span><span style="color: #000000; ">);<br></span><span style="color: #008080; ">22</span> <span style="color: #000000; "> </span><span style="color: #0000FF; ">return</span><span style="color: #000000; ">;<br></span><span style="color: #008080; ">23</span> <span style="color: #000000; "> }<br></span><span style="color: #008080; ">24</span> <span style="color: #000000; "> }<br></span><span style="color: #008080; ">25</span> <span style="color: #000000; "><br></span><span style="color: #008080; ">26</span> <span style="color: #000000; "> List</span><span style="color: #000000; "><</span><span style="color: #000000; ">String</span><span style="color: #000000; ">></span><span style="color: #000000; "> loadSql(String sqlFile) </span><span style="color: #0000FF; ">throws</span><span style="color: #000000; "> Exception {<br></span><span style="color: #008080; ">27</span> <span style="color: #000000; "> List</span><span style="color: #000000; "><</span><span style="color: #000000; ">String</span><span style="color: #000000; ">></span><span style="color: #000000; "> sqlList </span><span style="color: #000000; ">=</span><span style="color: #000000; "> </span><span style="color: #0000FF; ">new</span><span style="color: #000000; "> ArrayList</span><span style="color: #000000; "><</span><span style="color: #000000; ">String</span><span style="color: #000000; ">></span><span style="color: #000000; ">();<br></span><span style="color: #008080; ">28</span> <span style="color: #000000; "> </span><span style="color: #0000FF; ">try</span><span style="color: #000000; "> {<br></span><span style="color: #008080; ">29</span> <span style="color: #000000; "> InputStream sqlFileIn </span><span style="color: #000000; ">=</span><span style="color: #000000; "> </span><span style="color: #0000FF; ">new</span><span style="color: #000000; "> FileInputStream(sqlFile);<br></span><span style="color: #008080; ">30</span> <span style="color: #000000; "> StringBuffer sqlSb </span><span style="color: #000000; ">=</span><span style="color: #000000; "> </span><span style="color: #0000FF; ">new</span><span style="color: #000000; "> StringBuffer();<br></span><span style="color: #008080; ">31</span> <span style="color: #000000; "> </span><span style="color: #0000FF; ">byte</span><span style="color: #000000; ">[] buff </span><span style="color: #000000; ">=</span><span style="color: #000000; "> </span><span style="color: #0000FF; ">new</span><span style="color: #000000; "> </span><span style="color: #0000FF; ">byte</span><span style="color: #000000; ">[</span><span style="color: #000000; ">1024</span><span style="color: #000000; ">];<br></span><span style="color: #008080; ">32</span> <span style="color: #000000; "> </span><span style="color: #0000FF; ">int</span><span style="color: #000000; "> byteRead </span><span style="color: #000000; ">=</span><span style="color: #000000; "> </span><span style="color: #000000; ">0</span><span style="color: #000000; ">;<br></span><span style="color: #008080; ">33</span> <span style="color: #000000; "> </span><span style="color: #0000FF; ">while</span><span style="color: #000000; "> ((byteRead </span><span style="color: #000000; ">=</span><span style="color: #000000; "> sqlFileIn.read(buff)) </span><span style="color: #000000; ">!=</span><span style="color: #000000; "> </span><span style="color: #000000; ">-</span><span style="color: #000000; ">1</span><span style="color: #000000; ">) {<br></span><span style="color: #008080; ">34</span> <span style="color: #000000; "> sqlSb.append(</span><span style="color: #0000FF; ">new</span><span style="color: #000000; "> String(buff, </span><span style="color: #000000; ">0</span><span style="color: #000000; ">, byteRead));<br></span><span style="color: #008080; ">35</span> <span style="color: #000000; "> } </span><span style="color: #008000; ">//</span><span style="color: #008000; "> Windows ä¸‹æ¢è¡Œæ˜¯ \r\n, Linux ä¸‹æ˜¯ \n</span><span style="color: #008000; "><br></span><span style="color: #008080; ">36</span> <span style="color: #008000; "></span><span style="color: #000000; "><br></span><span style="color: #008080; ">37</span> <span style="color: #000000; "> String[] sqlArr </span><span style="color: #000000; ">=</span><span style="color: #000000; "> sqlSb.toString().split(</span><span style="color: #000000; ">"</span><span style="color: #000000; ">(;\\s*\\r\\n)(;\\s*\\n)</span><span style="color: #000000; ">"</span><span style="color: #000000; ">);<br></span><span style="color: #008080; ">38</span> <span style="color: #000000; "> </span><span style="color: #0000FF; ">for</span><span style="color: #000000; "> (</span><span style="color: #0000FF; ">int</span><span style="color: #000000; "> i </span><span style="color: #000000; ">=</span><span style="color: #000000; "> </span><span style="color: #000000; ">0</span><span style="color: #000000; ">; i </span><span style="color: #000000; "><</span><span style="color: #000000; "> sqlArr.length; i</span><span style="color: #000000; ">++</span><span style="color: #000000; ">) {<br></span><span style="color: #008080; ">39</span> <span style="color: #000000; "> String sql </span><span style="color: #000000; ">=</span><span style="color: #000000; "> sqlArr[i].replaceAll(</span><span style="color: #000000; ">"</span><span style="color: #000000; ">--.*</span><span style="color: #000000; ">"</span><span style="color: #000000; ">, </span><span style="color: #000000; ">""</span><span style="color: #000000; ">).trim();<br></span><span style="color: #008080; ">40</span> <span style="color: #000000; "><br></span><span style="color: #008080; ">41</span> <span style="color: #000000; "> </span><span style="color: #0000FF; ">if</span><span style="color: #000000; "> (</span><span style="color: #000000; ">!</span><span style="color: #000000; ">sql.equals(</span><span style="color: #000000; ">""</span><span style="color: #000000; ">)) {<br></span><span style="color: #008080; ">42</span> <span style="color: #000000; "> sqlList.add(sql);<br></span><span style="color: #008080; ">43</span> <span style="color: #000000; "> }<br></span><span style="color: #008080; ">44</span> <span style="color: #000000; "> }<br></span><span style="color: #008080; ">45</span> <span style="color: #000000; "> </span><span style="color: #0000FF; ">return</span><span style="color: #000000; "> sqlList;<br></span><span style="color: #008080; ">46</span> <span style="color: #000000; "> } </span><span style="color: #0000FF; ">catch</span><span style="color: #000000; "> (Exception ex) {<br></span><span style="color: #008080; ">47</span> <span style="color: #000000; "> </span><span style="color: #0000FF; ">throw</span><span style="color: #000000; "> </span><span style="color: #0000FF; ">new</span><span style="color: #000000; "> Exception(ex.getMessage());<br></span><span style="color: #008080; ">48</span> <span style="color: #000000; "> }<br></span><span style="color: #008080; ">49</span> <span style="color: #000000; "> }<br></span><span style="color: #008080; ">50</span> <span style="color: #000000; "> </span><span style="color: #0000FF; ">public</span><span style="color: #000000; "> </span><span style="color: #0000FF; ">static</span><span style="color: #000000; "> </span><span style="color: #0000FF; ">void</span><span style="color: #000000; "> main(String[] args) </span><span style="color: #0000FF; ">throws</span><span style="color: #000000; "> Exception {<br></span><span style="color: #008080; ">51</span> <span style="color: #000000; "> String url </span><span style="color: #000000; ">=</span><span style="color: #000000; "> </span><span style="color: #000000; ">"</span><span style="color: #000000; ">jdbc:odbc:friends</span><span style="color: #000000; ">"</span><span style="color: #000000; ">;<br></span><span style="color: #008080; ">52</span> <span style="color: #000000; "> Connection con;<br></span><span style="color: #008080; ">53</span> <span style="color: #000000; "> String sqlFile </span><span style="color: #000000; ">=</span><span style="color: #000000; "> </span><span style="color: #000000; ">"</span><span style="color: #000000; ">E:\\friends.sql</span><span style="color: #000000; ">"</span><span style="color: #000000; ">;<br></span><span style="color: #008080; ">54</span> <span style="color: #000000; "> <br></span><span style="color: #008080; ">55</span> <span style="color: #000000; "> </span><span style="color: #0000FF; ">try</span><span style="color: #000000; "> {<br></span><span style="color: #008080; ">56</span> <span style="color: #000000; "> con </span><span style="color: #000000; ">=</span><span style="color: #000000; "> DriverManager.getConnection(url);<br></span><span style="color: #008080; ">57</span> <span style="color: #000000; "> List</span><span style="color: #000000; "><</span><span style="color: #000000; ">String</span><span style="color: #000000; ">></span><span style="color: #000000; "> sqlList </span><span style="color: #000000; ">=</span><span style="color: #000000; "> </span><span style="color: #0000FF; ">new</span><span style="color: #000000; "> Test().loadSql(sqlFile);<br></span><span style="color: #008080; ">58</span> <span style="color: #000000; "> Statement smt </span><span style="color: #000000; ">=</span><span style="color: #000000; "> con.createStatement();<br></span><span style="color: #008080; ">59</span> <span style="color: #000000; "><br></span><span style="color: #008080; ">60</span> <span style="color: #000000; "> </span><span style="color: #0000FF; ">for</span><span style="color: #000000; "> (String sql : sqlList) {<br></span><span style="color: #008080; ">61</span> <span style="color: #000000; "> smt.addBatch(sql);<br></span><span style="color: #008080; ">62</span> <span style="color: #000000; "> }<br></span><span style="color: #008080; ">63</span> <span style="color: #000000; "> smt.executeBatch();<br></span><span style="color: #008080; ">64</span> <span style="color: #000000; "><br></span><span style="color: #008080; ">65</span> <span style="color: #000000; "> } </span><span style="color: #0000FF; ">catch</span><span style="color: #000000; "> (SQLException e) {<br></span><span style="color: #008080; ">66</span> <span style="color: #000000; "> }<br></span><span style="color: #008080; ">67</span> <span style="color: #000000; "><br></span><span style="color: #008080; ">68</span> <span style="color: #000000; "> }<br></span><span style="color: #008080; ">69</span> <span style="color: #000000; ">}<br></span><span style="color: #008080; ">70</span> <span style="color: #000000; "><br></span><span style="color: #008080; ">71</span> <span style="color: #000000; ">sqlæ–‡äšgå†…ä¸èƒ½æœ‰æ³¨é‡ŠåQŒfriends.sqlæ–‡äšgå†…å®¹ä¸?br /></span><span style="color: #008080; ">72</span> <span style="color: #000000; ">CREATE TABLE [dbo].[friends](<br></span><span style="color: #008080; ">73</span> <span style="color: #000000; "> [name] [varchar](</span><span style="color: #000000; ">50</span><span style="color: #000000; ">) COLLATE NOT NULL,<br></span><span style="color: #008080; ">74</span> <span style="color: #000000; "> [address] [varchar](</span><span style="color: #000000; ">50</span><span style="color: #000000; ">) COLLATE NULL,<br></span><span style="color: #008080; ">75</span> <span style="color: #000000; "> [phone] [bigint] NULL,<br></span><span style="color: #008080; ">76</span> <span style="color: #000000; "> [hireDate] [datetime] NULL,<br></span><span style="color: #008080; ">77</span> <span style="color: #000000; "> [salary] [</span><span style="color: #0000FF; ">int</span><span style="color: #000000; ">] NULL<br></span><span style="color: #008080; ">78</span> <span style="color: #000000; ">)<br></span><span style="color: #008080; ">79</span> <span style="color: #000000; "></span><br><br><div align="right"><a style="text-decoration:none;" href="http://www.aygfsteel.com/XingXing/" target="_blank">Xing</a> 2012-05-08 19:57 <a href="http://www.aygfsteel.com/XingXing/archive/2012/05/08/377634.html#Feedback" target="_blank" style="text-decoration:none;">å‘è¡¨è¯„è®º</a></div>]]> </article> <article> <h1>Javaå¦ä¹ åQšJ2EEä¸çš„13¿UæŠ€æœ¯è§„èŒ?</h1> <p>Xing — Tue, 08 May 2012 11:55:00 GMT</p> 1åQ‰JDBC(Java Database Connectivity): JDBC APIä¸ø™®¿é—®ä¸åŒçš„æ•°æ®åº“æä¾›äº†ä¸€¿Uç»Ÿä¸€çš„é€”å¾„åQŒè±¡ODBCä¸€æ øP¼ŒJDBCå¯¹å¼€å‘è€…å±è”½äº†ä¸€äº›ç»†èŠ‚é—®é¢˜ï¼Œå¦å¤–åQŒJDCBå¯ÒŽ(gu¨©)•°æ®åº“çš„è®¿é—®ä¹Ÿå…ähœ‰òq›_°æ— å…³æ€§ã€?p>ã€€ã€€2åQ‰JNDI(Java Name and Directory Interface): JNDI APIè¢«ç”¨äºŽæ‰§è¡Œåå—å’Œç›®å½•æœåŠ¡ã€‚å®ƒæä¾›äº†ä¸€è‡´çš„æ¨¡åž‹æ¥å˜å–å’Œæ“ä½œä¼ä¸š¾U§çš„èµ„æºå¦‚DNSå’ŒLDAPåQŒæœ¬åœ°æ–‡ä»¶ç³»¾lŸï¼Œæˆ–åº”ç”?a target="_blank" title="æœåŠ¡å™?>æœåŠ¡å™?/a>ä¸çš„å¯¹è±¡ã€?/p><p>ã€€ ã€€3åQ‰EJB(Enterprise JavaBean): J2EEæŠ€æœ¯ä¹‹æ‰€ä»¥èµ¢å¾—æŸä½“å¹¿æ³›é‡è§†çš„åŽŸå› ä¹‹ä¸€ž®±æ˜¯EJBã€‚å®ƒä»¬æä¾›äº†ä¸€ä¸ªæ¡†æž¶æ¥å¼€å‘å’Œå®žæ–½åˆ†å¸ƒå¼å•†åŠ¡é€»è¾‘åQŒç”±æ¤å¾ˆæ˜¾è‘—åœ°ç®€åŒ–äº†å…ähœ‰å¯äŽ×¾~©æ€§å’Œé«˜åº¦å¤æ‚çš?ä¼ä¸š¾U§åº”ç”¨çš„å¼€å‘ã€‚EJBè§„èŒƒå®šä¹‰äº†EJB¾l„äšgåœ¨ä½•æ—¶å¦‚ä½•ä¸Žå®ƒä»¬çš„å®¹å™¨è¿›è¡Œäº¤äº’ä½œç”¨ã€‚å®¹å™¨è´Ÿè´£æä¾›å…¬ç”¨çš„æœåŠ¡åQŒä¾‹å¦‚ç›®å½•æœåŠ¡ã€äº‹åŠ¡ç®¡ç†ã€å®‰å…¨æ€§ã€èµ„æºç¼“å†?æ± ä»¥åŠå®¹é”™æ€§ã€‚ä½†˜q™é‡Œå€¼å¾—æ³¨æ„çš„æ˜¯åQŒEJBòq¶ä¸æ˜¯å®žçŽ°J2EEçš„å”¯ä¸€é€”å¾„ã€‚æ£æ˜¯ç”±äºŽJ2EEçš„å¼€æ”¾æ€§ï¼Œä½¿å¾—æœ‰çš„åŽ‚å•†èƒ½å¤Ÿä»¥ä¸€¿Uå’ŒEJBòqŒ™¡Œçš„æ–¹å¼æ¥è¾‘Öˆ°å?æ ïLš„ç›®çš„ã€?/p></p><p>ã€€ã€€4åQ‰RMI(Remote Method Invoke): æ£å¦‚å…¶åå—æ‰€è¡¨ç¤ºçš„é‚£æ øP¼ŒRMIåè®®è°ƒç”¨˜qœç¨‹å¯¹è±¡ä¸Šæ–¹æ³•ã€‚å®ƒä½¿ç”¨äº†åºåˆ—åŒ–æ–¹å¼åœ¨å®¢æˆïL«¯å’?a target="_blank" 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href="http://www.aygfsteel.com/XingXing/archive/2012/05/08/377633.html#Feedback" target="_blank" style="text-decoration:none;">å‘è¡¨è¯„è®º</a></div>]]> </article> </main></body></html>