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@@ -1,70 +1,70 @@
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-package org.lsy.servlet;
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-import java.io.IOException;
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-import java.io.PrintWriter;
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-import java.sql.Connection;
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-import java.sql.DriverManager;
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-import java.sql.ResultSet;
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-import java.sql.Statement;
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-
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-import javax.servlet.ServletException;
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-import javax.servlet.http.HttpServlet;
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-import javax.servlet.http.HttpServletRequest;
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-import javax.servlet.http.HttpServletResponse;
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-
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-
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-public class UpdatePage extends HttpServlet
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-{
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- // 连接地址是由各个数据库生产商单独提供的，所以需要单独记住
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- public static final String DBURL = "jdbc:mysql://localhost:3306/kui";
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- // 连接数据库的用户名
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- public static final String DBUSER = "root";
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- // 连接数据库的密码
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- public static final String DBPASS = "001011";
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-
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- public void doGet(HttpServletRequest request, HttpServletResponse response)
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- throws ServletException, IOException
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- {
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- String name=request.getParameter("name");
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- //设置请求和响应的编码 ，不然页面上容易出现乱码
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- request.setCharacterEncoding("UTF-8");
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- response.setCharacterEncoding("UTF-8");
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- response.setContentType("text/html;UTF-8");
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- PrintWriter out = response.getWriter();
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- try
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- {
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- Connection conn = null; // 表示数据库的连接的对象
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- Statement stmt = null; // 表示数据库的更新操作
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- // 1、使用Class类加载驱动程序
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- Class.forName("com.mysql.jdbc.Driver");
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- // 2、连接数据库
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- conn = DriverManager.getConnection(DBURL, DBUSER, DBPASS);
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- // 3、Statement接口需要通过Connection接口进行实例化操作
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- stmt = conn.createStatement();
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- //用 rs获取查询结果
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- ResultSet rs=stmt.executeQuery("select * from student where name='"+name+"'");
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- while (rs.next())
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- {
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- out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
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- out.println("<HTML>");
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- out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
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- out.println(" <BODY>");
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- //输入成绩的表单，提交至Update
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- out.print(" <form action='Update' method='get'> ");
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- out.print("<table align='center'> <tr><td>设备名称：<input type='text' value='"+rs.getString("name")+"' name='name' size=20 ></td></tr>");
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- out.print("<tr><td>数量：<input type='text' value='"+rs.getString("calssGrent")+"' name='grent' size=20></td></tr>");
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- out.print("<tr><td>价格：<input type='text' value='"+rs.getString("result")+"' name='result' size=20></td></tr>");
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- //为了作为查询数据库的条件 ，这里要把ID传过去
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- out.print("<input type='hidden' value='"+name+"' name='name'>");
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- out.print("<tr><td><input type='submit' value='修改'><input type='reset' value='重置'></td></tr></table></form>");
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- out.print(" </BODY>");
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- out.println("</HTML>");
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- }
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- out.flush();
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- out.close();
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- }
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- catch (Exception e) {
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- e.printStackTrace();// TODO: handle exception
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- }
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- }
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-
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+package org.lsy.servlet;
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+import java.io.IOException;
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+import java.io.PrintWriter;
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+import java.sql.Connection;
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+import java.sql.DriverManager;
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+import java.sql.ResultSet;
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+import java.sql.Statement;
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+
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+import javax.servlet.ServletException;
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+import javax.servlet.http.HttpServlet;
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+import javax.servlet.http.HttpServletRequest;
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+import javax.servlet.http.HttpServletResponse;
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+
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+
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+public class UpdatePage extends HttpServlet
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+{
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+ // 杩炴帴鍦板潃鏄�敱鍚勪釜鏁版嵁搴撶敓浜у晢鍗曠嫭鎻愪緵鐨勶紝鎵€浠ラ渶瑕佸崟鐙��浣�
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+ public static final String DBURL = "jdbc:mysql://localhost:3306/kui";
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+ // 杩炴帴鏁版嵁搴撶殑鐢ㄦ埛鍚�
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+ public static final String DBUSER = "root";
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+ // 杩炴帴鏁版嵁搴撶殑瀵嗙爜
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+ public static final String DBPASS = "001011";
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+
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+ public void doGet(HttpServletRequest request, HttpServletResponse response)
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+ throws ServletException, IOException
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+ {
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+ String name=request.getParameter("name");
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+ //璁剧疆璇锋眰鍜屽搷搴旂殑缂栫爜 锛屼笉鐒堕〉闈�笂瀹规槗鍑虹幇涔辩爜
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+ request.setCharacterEncoding("UTF-8");
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+ response.setCharacterEncoding("UTF-8");
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+ response.setContentType("text/html;UTF-8");
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+ PrintWriter out = response.getWriter();
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+ try
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+ {
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+ Connection conn = null; // 琛ㄧず鏁版嵁搴撶殑杩炴帴鐨勫�璞�
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+ Statement stmt = null; // 琛ㄧず鏁版嵁搴撶殑鏇存柊鎿嶄綔
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+ // 1銆佷娇鐢–lass绫诲姞杞介┍鍔ㄧ▼搴�
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+ Class.forName("com.mysql.jdbc.Driver");
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+ // 2銆佽繛鎺ユ暟鎹�簱
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+ conn = DriverManager.getConnection(DBURL, DBUSER, DBPASS);
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+ // 3銆丼tatement鎺ュ彛闇€瑕侀€氳繃Connection鎺ュ彛杩涜�瀹炰緥鍖栨搷浣�
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+ stmt = conn.createStatement();
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+ //鐢� rs鑾峰彇鏌ヨ�缁撴灉
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+ ResultSet rs=stmt.executeQuery("select * from student where name='"+name+"'");
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+ while (rs.next())
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+ {
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+ out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
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+ out.println("<HTML>");
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+ out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
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+ out.println(" <BODY>");
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+ //杈撳叆鎴愮哗鐨勮〃鍗曪紝鎻愪氦鑷砋pdate
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+ out.print(" <form action='Update' method='get'> ");
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+ out.print("<table align='center'> <tr><td>璁惧�鍚嶇О锛�<input type='text' value='"+rs.getString("name")+"' name='name' size=20 ></td></tr>");
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+ out.print("<tr><td>鏁伴噺锛�<input type='text' value='"+rs.getString("calssGrent")+"' name='grent' size=20></td></tr>");
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+ out.print("<tr><td>浠锋牸锛�<input type='text' value='"+rs.getString("result")+"' name='result' size=20></td></tr>");
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+ //涓轰簡浣滀负鏌ヨ�鏁版嵁搴撶殑鏉′欢 锛岃繖閲岃�鎶奍D浼犺繃鍘�
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+ out.print("<input type='hidden' value='"+name+"' name='name'>");
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+ out.print("<tr><td><input type='submit' value='淇�敼'><input type='reset' value='閲嶇疆'></td></tr></table></form>");
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+ out.print(" </BODY>");
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+ out.println("</HTML>");
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+ }
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+ out.flush();
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+ out.close();
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+ }
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+ catch (Exception e) {
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+ e.printStackTrace();// TODO: handle exception
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+ }
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+ }
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+
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}
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