锘??xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>&#27431;&#32654;&#26085;&#38889;&#19968;&#21306;&#20108;&#21306;&#19977;&#21306;&#19981;&#21345;&#35270;&#39057;&#44;&#20037;&#20037;&#57;&#49;&#20122;&#27954;&#31934;&#21697;&#20013;&#25991;&#23383;&#24149;&#22902;&#27700;&#44;&#25104;&#20154;&#20122;&#27954;&#27431;&#32654;</title><link>http://www.aygfsteel.com/java-god/category/29688.html</link><description /><language>zh-cn</language><lastBuildDate>Tue, 01 Apr 2008 09:01:17 GMT</lastBuildDate><pubDate>Tue, 01 Apr 2008 09:01:17 GMT</pubDate><ttl>60</ttl><item><title>Facade妯″紡鐨勪竴涓吀鍨嬪簲鐢?-鏁版嵁搴揓DBC鐨勫簲鐢?/title><link>http://www.aygfsteel.com/java-god/archive/2008/02/28/182697.html</link><dc:creator>java flex 緇撳悎</dc:creator><author>java flex 緇撳悎</author><pubDate>Thu, 28 Feb 2008 07:27:00 GMT</pubDate><guid>http://www.aygfsteel.com/java-god/archive/2008/02/28/182697.html</guid><wfw:comment>http://www.aygfsteel.com/java-god/comments/182697.html</wfw:comment><comments>http://www.aygfsteel.com/java-god/archive/2008/02/28/182697.html#Feedback</comments><slash:comments>2</slash:comments><wfw:commentRss>http://www.aygfsteel.com/java-god/comments/commentRss/182697.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/java-god/services/trackbacks/182697.html</trackback:ping><description><![CDATA[<em><strong>Facade妯″紡鐨勫畾涔?/strong></em>: 涓哄瓙緋葷粺涓殑涓�緇勬帴鍙ｆ彁渚涗竴涓竴鑷寸殑鐣岄潰.Facade涓�涓吀鍨嬪簲鐢ㄥ氨鏄暟鎹簱JDBC鐨勫簲鐢?濡備笅渚嬪鏁版嵁搴撶殑鎿嶄綔:<br />
<strong>璇存槑錛?/strong>榪欐槸鍦ㄧ綉涓婄殑涓�綃囨枃绔犱腑鐪嬪埌鐨勫垪瀛愶紝涓婇潰娌℃湁鍐欏叏錛屾垜鍦ㄨ繖閲岃ˉ涓婁簡錛屾病鏈夌敤鍒版帴鍙ｃ�?br />
<br />
package com.pattern.structural.facade;<br />
<br />
import java.sql.Connection;<br />
import java.sql.DriverManager;<br />
import java.sql.PreparedStatement;<br />
import java.sql.ResultSet;<br />
import java.sql.SQLException;<br />
/*<br />
&nbsp;* 澶栬妯″紡鐨勪富瑕佺敤閫斿氨鏄負瀛愮郴緇熺殑澶嶆潅澶勭悊榪囩▼鎻愪緵鏂逛究鐨勮皟鐢ㄦ柟娉曪紝<br />
&nbsp;* 浣垮緱瀛愮郴緇熸洿鍔犲鏄撹浣跨敤銆?br />
&nbsp;* Facade瀵硅薄閫氬父灞炰簬Singleton妯″紡銆?br />
*/<br />
public class Mysql {<br />
&nbsp;&nbsp;&nbsp; <br />
&nbsp;&nbsp;&nbsp; private static Connection conn=null;<br />
&nbsp;&nbsp;&nbsp; private static PreparedStatement prep=null;<br />
<br />
&nbsp;&nbsp;&nbsp; public Mysql(String sql) {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; try {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; Class.forName("com.mysql.jdbc.Driver").newInstance();<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; conn = DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/test","root","");<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; prep = conn.prepareStatement(sql);<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; } catch (Exception e) {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; e.printStackTrace();<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; }<br />
&nbsp;&nbsp;&nbsp; }<br />
<br />
&nbsp;&nbsp;&nbsp; public void setString(int index, String parString) {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; try {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; prep.setString(index, parString);<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; } catch (SQLException e) {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; e.printStackTrace();<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; }<br />
&nbsp;&nbsp;&nbsp; }<br />
<br />
&nbsp;&nbsp;&nbsp; public ResultSet executeQuery() {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; try {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; return prep.executeQuery();<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; } catch (SQLException e) {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; e.printStackTrace();<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; return null;<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; }<br />
&nbsp;&nbsp;&nbsp; }<br />
<br />
&nbsp;&nbsp;&nbsp; public void close() {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; try {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; conn.close();<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; prep.close();<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; } catch (SQLException e) {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; e.printStackTrace();<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; }<br />
&nbsp;&nbsp;&nbsp; }<br />
}<br />
<br />
<br />
package com.pattern.structural.facade;<br />
<br />
import java.sql.Connection;<br />
import java.sql.DriverManager;<br />
import java.sql.PreparedStatement;<br />
import java.sql.ResultSet;<br />
<br />
public class DBCompare {<br />
<br />
&nbsp;&nbsp;&nbsp; public void getResultSet(String sql) {<br />
//&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; String sql = "SELECT * FROM bulletin WHERE id = ?";<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; Mysql mysql = new Mysql(sql);<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; try {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; mysql.setString(1, "4");<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; ResultSet rset = mysql.executeQuery();<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; while (rset.next()) {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; System.out.println(rset.getString("id"));<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; }<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; } catch (Exception e) {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; e.printStackTrace();<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; } finally {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; mysql.close();<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; mysql = null;<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; }<br />
&nbsp;&nbsp;&nbsp; }<br />
}<br />
<br />
<br />
package com.pattern.structural.facade;<br />
<br />
import java.sql.ResultSet;<br />
<br />
public class FacadeTest {<br />
<br />
&nbsp;&nbsp;&nbsp; public static void main(String[] args) {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; <br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; Mysql mysql = new Mysql("SELECT * FROM bulletin");<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; try {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; ResultSet rset = mysql.executeQuery();<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; while (rset.next()) {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; System.out.println(rset.getString("id"));<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; }<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; } catch (Exception e) {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; e.printStackTrace();<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; } finally {<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; mysql.close();<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; mysql = null;<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; }<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; <br />
&nbsp;&nbsp;&nbsp; }<br />
<br />
}<br />
<br />
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