<%@ page language= "java" import= "java.util.*" pageencoding= "UTF-8"%>
<%@ taglib prefix= "C" uri= "Http://java.sun.com/jsp/jstl/core"%>
<! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" >
<title>my JSP ' demo1.jsp ' starting page</title>
<body>
<%out.println ("First JSP program");%>
< interactivity!--Web pages--
<form action= "demo1.jsp" method= "POST" >
Input display: <input type= "text" name= "info" >
<input type= "Submit" value= "Show input" >
</form>
<!--Get what you've entered--
<%
Set the encoding to prevent Chinese garbled characters from appearing
Request.setcharacterencoding ("Utf-8");
String str=request.getparameter ("info");
Out.println ("%>
<!--JSP Basics: Annotate -
<!--This comment, the client can see-
<%--This JSP comment, the client cannot see--%>
<%
Java-provided single-line comment, client not visible
/*
A multi-line comment from Java that the client can see
*/
%>
<!--The first code block tag --
<%
int x=10;
String str1= "Hello,world";
Out.println ("x=" +x);
Out.println ("str1=" +str1);
%>
<!--The second code block tag: Global variables, methods, classes (not recommended here) --
<%!
public static String str2= "Hello,china";
public int Add (int x,int y) {
return x+y;
}
Class person{
private String name;
private int age;
Public person (String Name,int age) {
This.name=name;
This.age=age;
}
Public String Totell () {
return name+age;
}
}
%>
<!--here to call the method written above--
<%
Out.println (STR2);
Out.println (Add (2,3));
Out.println (New person ("Zhangsan", 5));
%>
<!--The third code block tag --
<%
String str3= "Spring";
int a=10;
%>
<!--advocates the use of this method output--
<H3>STR3=<%=STR3%>
<!--case: HTML and Java Code Advocate separation --
<table border= "1px" width= "500px" height= "500px" >
<%
int rows=10;
int cols=10;
for (int x1=0;x1<rows;x1++) {
%>
<tr>
<%
for (int y=0;y<cols;y++) {
%>
<td><%= (x1*y)%></td>
<%
}
%>
</tr>
<%
}
%>
</table>
<%--
<!--a form that defines the number of rows and columns of the input table--
<form action= "demo1.jsp" method= "POST" >
<table border= "1" width= "100%" >
<tr>
<td> Enter the number of table rows to display </td>
<td><input type= "text" name= "Row" ></td>
</tr>
<tr>
<td> Enter the number of table columns to display </td>
<td><input type= "text" name= "col" ></td>
</tr>
<tr>
<TD colspan= "2" >
<input type= "Submit" value= "Submission" >
<input type= "reset" value= "reset" >
</td>
</tr>
</table>
</form>
Receive the data passed above, print the form <br/>
<table border= "1" width= "100%" >
<%
int rows1=0;
int cols1=0;
try{
Rows=integer.parseint (Request.getparameter ("Row"));
Cols=integer.parseint (Request.getparameter ("col"));
}catch (Exception e) {}
for (int x2=0;x2<rows1;x2++) {
%>
<tr>
<%
for (int y=0;y<cols1;y++) {
%>
<td><%= (x2*y)%></td>
<%
}
%>
</tr>
<%
}
%>
</table>
--%>
The code is opened and placed on two JSP pages for display.
</body>
If there are errors and suggestions please speak out, together learn progress to make friends.
qq:1327880701
Copyright Notice: Bo Master original articles, reproduced please indicate the source. Http://blog.csdn.net/dzy21
JSP Basic usage
