基于jsp的失物招领系统(7)

}

}

public static void close(Connection conn,Statement st,ResultSet rs){

if(rs!=null){

try{

rs.close();

}catch(SQLException ex){ } }

if(st!=null){ try {

st.close(); }catch(Exception ex){ } }

if(conn!=null){ try{

conn.close(); }catch(Exception ex){ }

会员登录主要功能代码如下：

package util;

import java.io.UnsupportedEncodingException; import java.text.SimpleDateFormat; import java.util.Date;

public class Validate {

/**

* 是否为数字和英文验证 * */

public int getIntAndChar(String str){ char c;

int i;

for (i = 0; i

c = str.charAt(i);

if(!((c>='0' && c<='9') || (c>='a' && c<='z') || (c>='A' && c<='Z'))){ }

break;

}//判断字符是否在某个区间 if(i < str.length()){ return -1; }else{

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return 0;

}

} /**

* 是否为整数验证 * */

public int getInt(String str){ char c; int i;

for (i = 0; i='0' && c<='9')){ break;

}

}//判断字符是否在某个区间 if(i < str.length()){ return -1; }else{

return 0; }

} /**

* 是否为非法字符验证 * */

public boolean getLawlessChar(String str){ boolean flag = false; char c;

for(int i = 0;i < str.length();i++){ c = str.charAt(i); switch(c){

case '<' : flag = true; break; case '>' : flag = true; break; case '\ case '&' : flag = true; break; case ' ' : flag = true; break; } }

return flag;

}

学生信息管理的主要代码如下：

package util;

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import java.io.UnsupportedEncodingException; import java.text.SimpleDateFormat; import java.util.Date; public class Validate {

/**

* 是否为数字和英文验证 * */

public int getIntAndChar(String str){ } /**

* 是否为整数验证 * */

public int getInt(String str){ } /**

* 是否为非法字符验证

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char c; int i;

for (i = 0; i

c = str.charAt(i);

if(!((c>='0' && c<='9') || (c>='a' && c<='z') || (c>='A' && c<='Z'))){ }

break;

}//判断字符是否在某个区间

if(i < str.length()){

return -1; }else{ return 0; }

char c;

int i;

for (i = 0; i

c = str.charAt(i);

if(!(c>='0' && c<='9')){ }

break;

}//判断字符是否在某个区间 if(i < str.length()){ return -1; }else{ }

return 0;

*

*/

public boolean getLawlessChar(String str){ boolean flag = false; char c;

for(int i = 0;i < str.length();i++){ c = str.charAt(i); switch(c){

case '<' : flag = true; break; case '>' : flag = true; break; case '\ case '&' : flag = true; break; case ' ' : flag = true; break; }

} return flag;

}

注册会员功能的主要代码如下：

package servlet;

import java.io.IOException;

import java.io.PrintWriter; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date;

import javax.servlet.RequestDispatcher; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;

import util.Validate;

import bean.InsertUpdateDelBean;

public class AmountServlet extends HttpServlet { /**

* Constructor of the object. */

public AmountServlet() { super(); }

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/**

* Destruction of the servlet.
*/

public void destroy() { }

super.destroy(); // Just puts \// Put your code here

/**

* The doGet method of the servlet.
*

* This method is called when a form has its tag value method equals to get. *

* @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */

public void doGet(HttpServletRequest request, HttpServletResponse response) }

throws ServletException, IOException { doPost(request, response);

/** * The doPost method of the servlet.

*

* This method is called when a form has its tag value method equals to post. *

* @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */

public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

response.setContentType(\request.setCharacterEncoding(\

String id = request.getParameter(\

String amount = request.getParameter(\

String sql = \InsertUpdateDelBean ib = new InsertUpdateDelBean(); ib.insertANDupdateANDdel(sql);

sql = \

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