jsp知识点总苑.doc

1判断复选框是否已经选择=0)% 篮球 篮球 =0)% 足球 足球 =0)% 乒乓 乒乓 2单选框 性别： 男 女 性别： 男 女 3获取复选框的值String hh = saveForm.getHobby();String s = ;for(int i=0;i过滤器xml里的内容 filter com.xt.filter.EncodeFilter filter /* 过滤文件package com.xt.filter;import java.io.IOException;import javax.servlet.Filter;import javax.servlet.FilterChain;import javax.servlet.FilterConfig;import javax.servlet.ServletException;import javax.servlet.ServletRequest;import javax.servlet.ServletResponse;public class EncodeFilter implements Filterpublic void destroy() / TODO Auto-generated method stubpublic void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException / TODO Auto-generated method stubrequest.setCharacterEncoding(utf-8);chain.doFilter(request, response);public void init(FilterConfig arg0) throws ServletException / TODO Auto-generated method stub5工厂连接类 1.（SqlServer数据库1433）public static Connection getConnection()Connection conn = null;String sqlConn = jdbc:sqlserver:/localhost:1433;databaseName=test;try Class.forName(com.microsoft.sqlserver.jdbc.SQLServerDriver);conn = DriverManager.getConnection(sqlConn,sa,123456); catch (Exception e) e.printStackTrace();return conn;2.(mysql )public static Connection getConnection()Connection conn=null;try Class.forName(com.mysql.jdbc.Driver);String url=jdbc:mysql:/localhost:3306/test?useUnicode=true&characterEncoding=utf8;conn=DriverManager.getConnection(url,root,fly); catch (Exception e) / TODO Auto-generated catch blocke.printStackTrace();return conn;3.(oracle )private static Connection getconn() try Class.forName(oracle.jdbc.driver.OracleDriver);String url = jdbc:oracle:thin:localhsot:1521:xtfly;conn = DriverManager.getConnection(url, system, fly); catch (Exception e) System.out.println(oracle数据库未连接);return conn;6页面跳转时间限制 动态数字显示 成功 秒后登陆主页面！ var s=3; function d() document.getElementById(second).innerHTML=+s; s-; setTimeout(d(),1000); d(); 7点击按钮返回点击按钮跳转 function display()document.location = display.do?method=display; 8）上传文件public ActionForward upImg(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response) UploadImgForm uploadImgForm = (UploadImgForm) form;System.out.println(+);/获取所上传的文件FormFile file=uploadImgForm.getFile();/获取客户端的路径String path=getServlet().getServletContext().getRealPath(/uploadImg);/获得系统时间，创建新的的文件名String imgName=file.getFileName();String newImgName=System.currentTimeMillis()+imgName.substring(imgName.lastIndexOf(.);/创建新的文件路径名String newFileName=path+/+newImgName;/根据文件名和保存路径名保存文件SaveFile(file,newFileName);/把新的文件名传回index.jsp页面request.setAttribute(pcurl,newImgName );request.setAttribute(setp, 2);return new ActionForward(/index.jsp);public String SaveFile(FormFile file, String imgName)String saveResult=;try /定义字节输入流InputStream is=file.getInputStream();/定义字符读取流OutputStream os=new FileOutputStream(imgName);int readsize=0;byte buffer=new byte10