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    jsp留言板源代码三: 给jsp初学者.
    作 者: precom (皮蛋) 2000.12.10
    reply.jsp
    ====================================
    html>head>
    META content="text/html; charset=gb2312 " http-equiv=Content-Type>

    title>张家界电话黄页(网上114)/title>/head>
    style type="text/css">
    !--
    BODY { FONT-FAMILY: "宋体","Arial Narrow", "Times New Roman"; FONT-SI
    ZE: 9pt }
    .p1 { FONT-FAMILY: "宋体", "Arial Narrow", "Times New Roman"; FONT-SIZ
    E: 12pt }
    A:link { COLOR: #00793d; TEXT-DECORATION: none }
    A:visited { TEXT-DECORATION: none }
    A:hover { TEXT-DECORATION: underline}
    TD { FONT-FAMILY: "宋体", "Arial Narrow", "Times New Roman"; FONT-SIZE
    : 9pt }
    .p2 { FONT-FAMILY: "宋体", "Arial Narrow", "Times New Roman"; FONT-SIZ
    E: 9pt; LINE-HEIGHT: 150% }
    .p3 { FONT-FAMILY: "宋体", "Arial Narrow", "Times New Roman"; FONT-SIZ
    E: 9pt; LINE-HEIGHT: 120% }

    -->
    /style>


    body>


    %@ page contentType="text/html; charset=GB2312" %>
    %@ page language="java" import="java.sql.*" %>
    jsp:useBean id="testInq" scope="page" class="ymbean.opDb" />
    %
    int pages=1;
    int pagesize=10;
    int count=0;
    int totalpages=0;

    String countsql="",inqsql="",updatesql="",lwhere="",insertsql="",st=
    "";

    String lw_title="",lw_author="",pagetitle="",author_http="",author_e
    mail="",lw_ico="0",
    lw_content="",lw_class1="";
    String author_ip="",lw_time="",lw_class2="",lw_type="",zt_time="",zt
    _author="";
    int answer_num=0,click_num=0;
    int inquire_item=1;
    String inquire_itemt="",inquire_value="";
    String lurlt="a href=reply.jsp?";

    lwhere=" where "; //只显示主贴

    /*
    Enumeration e = request.getParameterNames();
    while (e.hasMoreElements()) {
    String name = (String) e.nextElement();
    */
    try{
    //取显示的页页序数
    pages = new Integer(request.getParameter("pages")).intValue();
    } catch (Exception e) {}
    try{
    //取查询参数
    lw_class1=new String(request.getParameter("lw_class1").getBytes
    ("ISO8859_1"));
    lw_class2=new String(request.getParameter("lw_class2").getBytes
    ("ISO8859_1"));
    zt_time=new String(request.getParameter("zt_time").getBytes("IS
    O8859_1"));
    zt_author=new String(request.getParameter("zt_author").getBytes
    ("ISO8859_1"));

    lwhere=" where ( lw_class1='"+lw_class1+"' and lw_class2='"+lw_
    class2+
    "' and (lw_time='"+ zt_time+"' or zt_time='"+zt_time+
    "') and (author_email='"+zt_author+"' or zt_author='"+zt
    _author+"') ) ";
    lurlt=lurlt+"lw_class1="+lw_class1+"lw_class2="+lw_class2+"zt
    _time="+zt_time+
    "zt_author="+zt_author+"";
    //out.print(lwhere);
    } catch (Exception e) { //out.print("error1: "+e+"hr>");
    }

    try{
    //取得参数 留言内容
    lw_class1=new String(request.getParameter("lw_class1").getBytes("ISO
    8859_1"));
    lw_class2=new String(request.getParameter("lw_class2").getBytes("ISO
    8859_1"));
    lw_title=new String(request.getParameter("lw_title").getBytes("ISO88
    59_1"));
    lw_author=new String(request.getParameter("lw_author").getBytes("ISO
    8859_1"));
    pagetitle=new String(request.getParameter("pagetitle").getBytes("ISO
    8859_1"));
    author_http=new String(request.getParameter("author_http").getBytes(
    "ISO8859_1"));
    author_email=new String(request.getParameter("author_email").getByte
    s("ISO8859_1"));
    zt_time=new String(request.getParameter("zt_time").getBytes("ISO8859
    _1"));
    zt_author=new String(request.getParameter("zt_author").getBytes("ISO
    8859_1"));
    lw_ico=request.getParameter("gifface");

    } catch (Exception e) {}

    try{
    lw_content=new String(request.getParameter("lw_content").getBytes("I
    SO8859_1"));
    String requestMethod=request.getMethod();
    requestMethod=requestMethod.toUpperCase();
    if(requestMethod.indexOf("POST")0)
    { out.print("非法操作!");
    return;
    }

    //形成其他数据项
    author_ip=request.getRemoteAddr() ;
    lw_time=testInq.getCurrentDate("yyyyMMddHHmmss");
    lw_type=""+"c"; //从贴
    answer_num=0;
    click_num=0;
    //================
    st="','";
    //保证留言所有数据项的长度在正常范围内
    if(lw_title.length()>50) lw_title=lw_title.substring(0,50);
    if(lw_author.length()>20) lw_author=lw_author.substring(0,20);
    if(author_http.length()>40) author_http=author_http.substring(0,40);

    if(author_email.length()>50) author_email=author_email.substring(0,4
    0);
    if(zt_author.length()>50) zt_author=zt_author.substring(0,40);
    if(lw_content.length()>4000) lw_content=lw_content.substring(0,4000)


    insertsql="insert into guestbook values('"+lw_title+st+lw_author+st+
    author_http+st+
    author_email+st+lw_ico+st+lw_time+"',"+answer_num+","+cli
    ck_num+",'"+
    author_ip+st+lw_class1+st+lw_class2+st+lw_type+st+zt_time
    +st+zt_author+st+
    lw_content+"')";
    //out.print(insertsql);
    //插入留言
    try{
    st=testInq.executeUpdate(insertsql);
    if(st.indexOf("executeUpdate ok")0)
    out.print("msg="+st);
    else
    {
    updatesql="update guestbook set answer_num=answer_num + 1 "+l
    where;
    //增加回复人数统计
    try{
    st=testInq.executeUpdate(updatesql);
    if(st.indexOf("executeUpdate ok")0)
    out.print("msg="+st);
    }catch (Exception e) { }
    }
    }catch (Exception e) { out.print("留言出错:"+e);}
    } catch (Exception e) {}
    %>

    %
    //验证留言输入项合法性的javascript
    String ljs=" SCRIPT language=JavaScript> \n"+
    " !-- \n"+
    " function ValidInput() \n"+
    " {if(document.sign.lw_author.value==\&;\&;) \n"+
    " {alert(\&;请填写您的大名。\&;); \n"+
    " document.sign.lw_author.focus(); \n"+
    " return false;} \n"+
    " if(document.sign.lw_title.value==\&;\&;) \n"+
    " {alert(\&;请填写留言主题。\&;); \n"+
    " document.sign.lw_title.focus(); \n"+
    " return false;} \n"+
    " if (document.sign.author_email.value!=\&;\&;) \n"+
    " { if ((document.sign.author_email.value.indexOf(\&;@\&;)0)//(document
    .sign.author_email.value.indexOf(\&;:\&;)!=-1)) \n"+
    " {alert(\&;您填写的EMail无效,请填写一个有效的Email!\&;); \n"+
    " document.sign.author_emaill.focus(); \n"+
    " return false; \n"+
    " } \n"+
    " } \n"+
    " return true; \n"+
    " } \n"+
    " function ValidSearch() \n"+
    " { if(document.frmsearch.findstr.value==\&;\&;) \n"+
    " {alert(\&;不能搜索空串!\&;); \n"+
    " document.frmsearch.findstr.focus(); \n"+
    " return false;} \n"+
    " } \n"+
    " //--> \n"+
    " /SCRIPT> ";
    out.print(ljs);
    %>


    %
    //显示最近时间发表的一页留言
    countsql="select count(lw_title) from guestbook "+lwhere;
    inqsql ="select lw_title,lw_author,lw_time,lw_content,author_ip, "+
    " author_email from guestbook "+lwhere+" order by lw_time desc
    " ;
    updatesql="update guestbook set click_num=click_num + 1 "+lwhere;

    //增加浏览人数统计
    try{
    st=testInq.executeUpdate(updatesql);
    if(st.indexOf("executeUpdate ok")0)
    out.print("msg="+st);
    }catch (Exception e) { }

    //out.print(inqsql);
    if(pages>0)
    {
    try {
    try{
    ResultSet rcount=testInq.executeQuery(countsql);
    if(rcount.next())
    {
    count = rcount.getInt(1);
    }
    rcount.close();
    } catch (Exception el1) { out.println("count record error
    : "+el1+"br>" );
    out.println(countsql);
    }

    totalpages=(int)(count/pagesize);
    if(count>totalpages*pagesize) totalpages++;
    st=""+
    " TABLE align=center border=0 cellPadding=0 cellSpacing=
    0 width=\&;95%\&;> "+
    " TBODY> TR> TD align=middle bgColor=#97badd width=\&;1
    00%\&;>FONT color=#ff0000>"+
    " 共 "+totalpages+" 页,"+count+"
    条. "+" 当前页: "+pages+
    " /FONT>/TD>/TR>/TBODY>/TABLE>BR> ";

    out.print(st);

    //out.print(" 共 "+totalpages+" 页,"+
    count+" 条. "+" 当前页: "+pages+"br>");

    st=" center> "+
    " TABLE border=0 cellPadding=2 cellSpacing=1 width=\&;95%\&;> "+
    " TBODY> "+
    " TR> "+
    " TD align=middle bgColor=#6699cc width=\&;55%\&;>FONT "+
    " color=#ffffff>留言主题/FONT>/TD> "+
    " TD align=middle bgColor=#6699cc width=50>FONT "+
    " color=#ffffff>回应数/FONT>/TD> "+
    " TD align=middle bgColor=#6699cc width=40>FONT "+
    " color=#ffffff>点击数/FONT>/TD> "+
    " TD align=middle bgColor=#6699cc width=100>FONT "+
    " color=#ffffff>作者名/FONT>/TD> "+
    " TD align=middle bgColor=#6699cc width=140>FONT "+
    " color=#ffffff>发表/回应时间/FONT>/TD>/TR> ";
    //out.print(st);

    if(count > 0 )
    {
    ResultSet rs = testInq.executeQuery(inqsql);
    ResultSetMetaData metaData = rs.getMetaData();

    int i;
    // 跳过pages -1 页,使cursor指向pages并准备显示
    for(i=1;i=(pages - 1)*pagesize;i++) rs.next();
    //显示第pages页开始
    st= " CENTER> TABLE border=0 cellSpacing=1 width=\&;95%\&;
    > TBODY> ";
    out.print(st);
    String linestr="";
    for(i=1;i=pagesize;i++)
    if(rs.next())
    {
    lw_title=rs.getString("lw_title");
    lw_author=rs.getString("lw_author");
    lw_time=rs.getString("lw_time");
    lw_content=rs.getString("lw_content");
    author_ip=rs.getString("author_ip");
    author_email=rs.getString("author_email");
    st=lw_time.substring(0,4)+"-"+lw_time.substring(4,6)+"-"
    +lw_time.substring(6,8)+":"+
    lw_time.substring(8,10)+":"+lw_time.substring(10,12)+
    ":"+lw_time.substring(12,14);
    try{lw_content=testInq.addBr(testInq.removeComment(lw_co
    ntent));} catch (Exception e) {}
    linestr =""+
    " TR bgColor=#bed9fc> "+
    " TD align=left width=\&;75%\&;>FONT "+
    " color=#0000cd>留言主题:/FONT>STRONG>"
    +lw_title+"/STRONG>/TD> "+
    " TD align=left width=\&;25%\&;>FONT color=
    #0000cd>留言时间:/FONT>"+st+"/TD>/TR> "+
    " TR bgColor=#e7f1fe> "+
    " TD colSpan=2 "+
    " width=\&;700\&; wrap=yes>BR>"+lw_content+"
    BR>br>/TD>/TR> "+
    " TR bgColor=#bed9fc> "+
    " TD align=right colSpan=2 width=\&;100%\&;>
    FONT "+
    " color=#0000cd>作者:/FONT>"+lw_author+"
    FONT "+
    " color=#0000cd>来源:/FONT>"+author_ip+"
    /TD>/TR>";
    out.println(linestr);

    }
    rs.close();
    //显示第pages页结束
    st= " /TBODY>/TABLE>/CENTER>/DIV>BR> "+

    " CENTER>A "+
    " href=\&;guestbook.jsp\&;>FONT "+
    " color=blue face=楷体_GB2312 size=4>返回留言板
    首页/FONT>/A>/CENTER>BR> "+
    " HR align=center noShade SIZE=1 width=\&;95%\&;
    > ";

    out.print(st);

    int iFirst=1,iLast=totalpages,iPre,iNext;
    if(pages=1) iPre=1;
    else iPre=pages - 1;

    if(pages>=totalpages) iNext=totalpages;
    else iNext=pages + 1;

    int n=(int)(count/pagesize);
    if(n*pagesizecount) n++;
    if(n>1)
    {
    //for(i=1;i=n;i++) out.print("a href=inquire.jsp?pages=
    "+i+">"+i+" /a>");
    //out.print("HR align=center noShade SIZE=1 width=\&;95%\
    ">");
    String lt1="返回主页",lt2="第一页",lt3="上一页",lt4="下一
    页",lt5="最后一页",lt6="";
    lt6="a href=http://www.zj.hn.cn>"+ lt1 + " /
    a>"+
    lurlt + "pages="+iFirst+">FONT color=red>"+lt2+"nbs
    p; /a>"+
    lurlt + "pages="+iPre+">FONT color=red>"+lt3+"
    /a>" +
    lurlt + "pages="+iNext+">FONT color=red>"+lt4+"
    ; /a>" +
    lurlt + "pages="+iLast+">FONT color=red>"+lt5+"
    ; /a>";
    st=""+
    " TABLE align=center border=0 cellPadding=0 cellSpacing=
    0 width=\&;95%\&;> "+
    " TBODY> TR> TD align=middle bgColor=#97badd width=\&;1
    00%\&;>FONT color=#ff0000>"+
    lt6+
    " /FONT>/TD>/TR>/TBODY>/TABLE>BR> ";

    out.print(st);

    }

    }
    } catch (Exception e) { out.println("error: "+e); }
    }


    %>


    %
    //留言板界面尾部
    String lbottom="";
    lbottom=lbottom+
    " center> \n"+
    " FORM action=reply.jsp method=post name=sign> \n"+
    " INPUT name=lw_class1 type=hidden value=cnzjj_gt> \n"+
    " INPUT name=lw_class2 type=hidden value="+lw_class2+"> \n"
    +
    " INPUT name=pages type=hidden value=1> \n"+
    " INPUT name=zt_time type=hidden value="+zt_time+"> \n"+
    " INPUT name=zt_author type=hidden value="+zt_author+"> \n"
    +
    " TABLE bgColor=#d5e8fd border=0 cellSpacing=1 width=\&;95%\&;> \n"+

    " TBODY> \n"+
    " TR> \n"+
    " TD align=middle bgColor=#e6e6fa colSpan=2 noWrap>STRONG>FONT
    color=blue \n"+
    " face=楷体_GB2312 size=5>发 表 意 见/FONT>/STRONG> nbs
    p; [加*的内容必须填写] /TD>/TR> \n"+
    " TR> \n"+
    " TD noWrap width=\&;45%\&;> \n"+
    " DIV align=left> \n"+
    " TABLE bgColor=#d5e8fd border=0 cellSpacing=1 width=\&;100%\&;>
    \n"+
    " TBODY> \n"+
    " TR> \n"+
    " TD noWrap width=\&;100%\&;>*留言主题:INPUT maxLength=40 n
    ame=lw_title \n"+
    " size=36>/TD>/TR> \n"+
    " TR> \n"+
    " TD noWrap width=\&;100%\&;>*网上大名:INPUT maxLength=18 n
    ame=lw_author \n"+
    " size=36>/TD>/TR> \n"+
    " TR> \n"+
    " TD noWrap width=\&;100%\&;> 主页标题:INPUT maxLength
    =40 name=pagetitle \n"+
    " size=36>/TD>/TR> \n"+
    " TR> \n"+
    " TD noWrap width=\&;100%\&;> 主页地址:INPUT maxLength
    =255 name=author_http \n"+
    " size=36>/TD>/TR> \n"+
    " TR> \n"+
    " TD noWrap width=\&;100%\&;>*电子邮件:INPUT maxLength=40 n
    ame=author_email \n"+
    " size=36>/TD>/TR>/TBODY>/TABLE>/DIV>/TD> \n"+
    " TD noWrap vAlign=top width=\&;55%\&;> \n"+
    " DIV align=left> \n"+
    " TABLE bgColor=#b6d7fc border=0 cellSpacing=1 width=\&;100%\&;>
    \n"+
    " TBODY> \n"+
    " TR> \n"+
    " TD width=\&;100%\&;>请在下面填写你的留言:/TD>/TR> \n"+

    " TR> \n"+
    " TD width=\&;100%\&;>TEXTAREA cols=50 name=lw_content rows=
    7>/TEXTAREA>/TD>/TR>/TBODY>/TABLE>/DIV>/TD>/TR> \n"+
    " TR> \n"+
    " TD bgColor=#fbf7ea colSpan=2 noWrap>表情\n"+
    " INPUT name=gifface type=radio value=1 checked>IMG \n"+
    " alt=\&;1.gif (152 bytes)\&; height=15 src=\&;1.gif\&; width=15> I
    NPUT \n"+
    " name=gifface type=radio value=2>IMG alt=\&;2.gif (174 bytes)\&;
    height=15 \n"+
    " src=\&;2.gif\&; width=15> INPUT name=gifface type=radio value=3
    >IMG \n"+
    " alt=\&;3.gif (147 bytes)\&; height=15 src=\&;3.gif\&; width=15> I
    NPUT \n"+
    " name=gifface type=radio value=4>IMG alt=\&;4.gif (172 bytes)\&;
    height=15 \n"+
    " src=\&;4.gif\&; width=15> INPUT name=gifface type=radio value=5
    >IMG \n"+
    " alt=\&;5.gif (118 bytes)\&; height=15 src=\&;5.gif\&; width=15> I
    NPUT \n"+
    " name=gifface type=radio value=6>IMG alt=\&;6.gif (180 bytes)\&;
    height=15 \n"+
    " src=\&;6.gif\&; width=15> INPUT name=gifface type=radio value=7
    >IMG \n"+
    " alt=\&;7.gif (180 bytes)\&; height=15 src=\&;7.gif\&; width=15> I
    NPUT \n"+
    " name=gifface type=radio value=8>IMG alt=\&;8.gif (96 bytes)\&;
    height=15 \n"+
    " src=\&;8.gif\&; width=15> INPUT name=gifface type=radio value=9
    >IMG \n"+
    " alt=\&;9.gif (162 bytes)\&; height=15 src=\&;9.gif\&; width=15> I
    NPUT \n"+
    " name=gifface type=radio value=10>IMG alt=\&;10.gif (113 bytes)
    \&; height=15 \n"+
    " src=\&;10.gif\&; width=15> INPUT name=gifface type=radio value=
    11>IMG \n"+
    " alt=\&;11.gif (93 bytes)\&; height=15 src=\&;11.gif\&; width=15>
    INPUT \n"+
    " name=gifface type=radio value=12> IMG alt=\&;12.gif (149 bytes
    )\&; height=14 \n"+
    " src=\&;12.gif\&; width=15> \n"+
    " INPUT \n"+
    " name=gifface type=radio value=13> IMG alt=\&;13.gif (149 bytes
    )\&; height=14 \n"+
    " src=\&;13.gif\&; width=15> \n"+
    " INPUT \n"+
    " name=gifface type=radio value=14> IMG alt=\&;14.gif (149 bytes
    )\&; height=14 \n"+
    " src=\&;14.gif\&; width=15> \n"+
    " INPUT \n"+
    " name=gifface type=radio value=15> IMG alt=\&;15.gif (149 bytes
    )\&; height=14 \n"+
    " src=\&;15.gif\&; width=15> \n"+
    " INPUT \n"+
    " name=gifface type=radio value=16> IMG alt=\&;16.gif (149 bytes
    )\&; height=14 \n"+
    " src=\&;16.gif\&; width=15> /TD> \n"+
    " /TR> \n"+
    " TR> \n"+
    " TD align=middle colSpan=2 noWrap>INPUT name=cmdGO onclick=\&;re
    turn ValidInput()\&; type=submit value=\&;提 交\&;> \n"+

    " INPUT name=cmdPrev onclick=\&;return ValidInput()\&; type=submit valu
    e=\&;预 览\&;> \n"+
    " INPUT name=cmdCancel type=reset value=\&;重 写\&;> INPU
    T name=cmdBack onclick=javascript:history.go(-1) type=button value=\&;返
    回\&;> \n"+
    " /TD>/TR>/TBODY>/TABLE>/FORM>/CENTER>/DIV> ";
    out.print(lbottom);

    %>

    /body>/html>

    作 者: precom (皮蛋) 2000.12.10
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