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📄 selectusertable6.jsp

📁 jsp目前成为热门话题,本文件提供了JSP网络编程从基础到实践的源代码.
💻 JSP
字号:
🔍 
<%@ page contentType="text/html;charset=GB2312" %>
<%@ page import="java.sql.*" %>
<%!
public String codeToString(String str)
{//处理中文字符串的函数
  String s=str;
  try
    {
    byte tempB[]=s.getBytes("ISO-8859-1");
    s=new String(tempB);
    return s;
   }
  catch(Exception e)
   {
    return s;
   }  
}
%>
<%//构造查询SQL语句
  String sqlString=null;//SQL语句
  String sex=codeToString(request.getParameter("sex"));
  String username=codeToString(request.getParameter("username"));
  if(sex==null||sex.trim().length()==0)
    sqlString=new String("SELECT * FROM userTable");
  else
    sqlString=new String("SELECT * FROM userTable where user_sex='"+sex.trim()+"'");
  if(username==null||username.trim().length()==0)//SQL语句不变
    ;//此句什么事也不做
  else
    if(sqlString.indexOf("where")==-1)//SQL语句中没有where子句
       sqlString=sqlString+" where user_true_name like '%"+username+"%'";
     else
       sqlString=sqlString+" and user_true_name like '%"+username+"%'";
%>
<HTML>
<BODY>
 <% Connection con;
    Statement sql; 
    ResultSet rs;
    try
    {
      Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
    }
    catch(ClassNotFoundException e)
    {
      out.print("类找不到！");
    }
    try 
    {  
         con=DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=testDatabse","sa","6599996");
         sql=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_READ_ONLY);
         rs=sql.executeQuery(sqlString);
         rs.last();
         int rowNumber=rs.getRow();
         out.print("<Table Border>");
         out.print("<form action=selectUserTable6.jsp method=post>");
         out.print("<TR><td>查询条件:</td>");
         out.print("<td colspan=7>");
         out.print("姓名:<input type=text name=username>");
         out.print("&nbsp;性别:<select name=sex>");
         out.print("<option value='' selected>所有</option>");
         out.print("<option value=男>男</option>");
         out.print("<option value=女>女</option></select>");
         out.print("<input type=submit value=提交>");
         out.print("</td></tr></form>");
         out.print("<TR><td colspan=8 align=center>用户数据(共"+rowNumber+"条记录)</td></tr>");   
         out.print("<TR>");
            out.print("<Td width=100 >"+"用户ID号");
            out.print("<Td width=50 >"+"用户名");
            out.print("<Td width=100>"+"用户真实姓名");
            out.print("<Td width=50>"+"年龄");
            out.print("<Td width=50>"+"性别");
            out.print("<Td width=100>"+"联系地址");
            out.print("<Td width=100>"+"联系电话");
            out.print("<Td width=100>"+"添加时间");
         out.print("</TR>");
       rs.beforeFirst();
       while(rs.next())
       { out.print("<TR>");
             out.print("<TD >"+rs.getLong(1)+"</TD>");
             out.print("<TD >"+rs.getString(2)+"</TD>"); 
             out.print("<TD >"+rs.getString(4)+"</TD>");
             out.print("<TD >"+rs.getInt("user_age")+"</TD>"); 
             out.print("<TD >"+rs.getString("user_sex")+"</TD>");
             out.print("<TD >"+rs.getString("user_address")+"</TD>");
             out.print("<TD >"+rs.getString("user_telephone")+"</TD>");
             out.print("<TD >"+rs.getString("add_time")+"</TD>");
        out.print("</TR>") ; 
        }
        out.print("</Table>");
        con.close();
     }
   catch(SQLException e1) 
   {
      out.print("SQL异常！");
   }
 %>
</BODY>
</HTML>

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