Obtain the values value of the check box from the JSP page, store the value in the array by defining the array, and display it
The simplest is
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String strLove = "";
String [] strLoves = (String []) request. getParameterValues ("love ");
// Read each selected item cyclically
For (String love: strLoves)
{
StrLove = strLove + love + ",";
} StrLove = strLove. substring (0, strLove. length ()-1 );
|
Example
Html page
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<Form action = "02.jsp" method =" post ">
Name: <input type = "text" name = "uname"/>
<P>
Skills:
<Input type = "checkbox" name = "tech" value = "J2EE"/> J2EE
<Input type = "checkbox" name = "tech" value = ". NET"/>. NET
<Input type = "checkbox" name = "tech" value = "ASP"/> ASP
<Input type = "checkbox" name = "tech" value = "PHP"/> PHP
<P>
<Input type = "submit" value = "submit"/>
</Form> |
Jsp processing page
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<% @ Page contentType = "text/html; charset = GB2312" %>
<Html>
<Head>
<Title> 02.jsp</title>
<! --
<Link rel = "stylesheet" type = "text/css" href = "styles.css">
-->
</Head>
<Body>
<%
Request. setCharacterEncoding ("GB2312 ");
String Name = request. getParameter ("uname ");
// Obtain the parameter array
String Tech [] = request. getParameterValues ("tech ");
%>
<H1> Name: <% = Name %> <H1> good at technology:
<%
// Output array
Int I;
For (I = 0; I <Tech. length; I ++)
{
%>
<% = Tech [I] %>
<%
}
%>
</H1>
</Body>
</Html> |
The above code is not in English or Chinese. If the option value contains Chinese, the processing code in JSP is as follows:
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<% @ Page contentType = "text/html; charset = gb2312" language = "java" import = "java. SQL. *" errorPage = "" %> <%!
Public String chinese (String sText)
{
Try
{
Return new String (sText. getBytes ("iso-8859-1"), "gbk ");
}
Catch (Exception e)
{
Return sText;
}
}
%> <%
String strLove = "";
String [] strLoves = (String []) request. getParameterValues ("love "); // Read each selected item cyclically
For (String love: strLoves)
{
StrLove = strLove + chinese (love) + ",";
} StrLove = strLove. substring (0, strLove. length ()-1 );
%> |
Jsp obtains the checkbox value and writes it to the database. You can use the following methods:
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<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<Html xmlns = "http://www.w3.org/1999/xhtml">
<Head>
<Meta http-equiv = "Content-Type" content = "text/html; charset = gb2312"/>
<Title> test </title>
</Head> <Body>
<Form name = "myform" id = "myform" method = "post" action = "CorAdd. jsp">
<Label>
<Input type = "checkbox" name = "CorpMode" value = "1"/> item
</Label>
<Label>
<Input type = "checkbox" name = "CorpMode2" value = "2"/> Head
</Label>
<Label>
<Input type = "checkbox" name = "CorpMode2" value = "3"/> Others
</Label>
<Input name = "" type = "button" onclick = "document. myform. action = 'submit. jsp? Menu = add' "/>
</Form>
</Body>
</Html> |
Save the jsp program on the page
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<% @ Page contentType = "text/html; charset = utf-8" language = "java" import = "java. util. *, java. text. *, java. SQL. * "%> <%
If (menu. equals ("add "))
{ String tmp = "";
String SCorpMode = "";
String [] CorpMode = request. getParameterValues ("CorpMode ");
If (CorpMode. length> 0)
{
For (int I = 0; I <CorpMode. length; I ++)
{
SCorpMode = SCorpMode + CorpMode + ",";
}
SCorpMode = SCorpMode. substring (0, SCorpMode. length ()-1); // remove the last comma in the SID.
} Tmp = "insert into Corporation (CorpMode) values ('+ SCorpMode + '); If(dbc.exe cuteUpdate (tmp)> = 0)
Out. println ("<script> alert ('information added successfully! '); Location. href = 'corpadd. Jsp' </script> ");
Else
// Out. println ("<script> alert ('failed to add! '); Location. href = 'corpadd. Jsp' </script> ");
Out. print (tmp );
}
}
%> |
