index.jsp:
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 4 <html> 5 <head> 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 7 <title>Insert title here</title> 8 9 <script type="text/javascript"> 10 http_request = null; 11 function test_ajax(){ 12 if(http_request == null){ 13 if(window.XMLHttpRequest){ 14 http_request = new XMLHttpRequest(); 15 } 16 else if(window.ActiveXObject){ 17 try{ 18 http_request = new ActiveXObject("Msxml2.XMLHTTP"); 19 }catch(e){ 20 try{ 21 http_request = new ActiveXObject("Microsoft.XMLHTTP"); 22 } 23 catch(e){ 24 25 } 26 } 27 } 28 } 29 if(http_request == null){ 30 console.log("不能创建XMLHttpRequest对象实例"); 31 return false; 32 } 33 console.log("创建XMLHttpRequest对象成功"); 34 http_request.onreadystatechange = getResult;//绑定处理函数 35 36 http_request.open("POST","second.jsp",true);//true异步---链接 37 38 var msg = ""; 39 msg+="name=周一"; 40 msg+="&age=45"; 41 console.log("msg::"+msg); 42 http_request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");//设置POST方式额外请求头，GET则不需要 43 http_request.send(encodeURI(msg)); 44 /* 45 知识点：：传送不支持中文，传送先编码，收到时解码------------- 46 */ 47 } 48 function getResult(){ 49 console.log("ajax响应结果：：readyState::"+http_request.readyState+"::status::"+http_request.status); 50 if(http_request.readyState == 4){ 51 if(http_request.status == 200){ 52 alert(http_request.responseText); 53 } 54 } 55 } 56 </script> 57 </head> 58 <body> 59 <hr> 60 <form action="second.jsp" onsubmit="return false;"> 61 <!-- <input type="submit" value="提交" onclick="" /> --> 62 <input type="button" value="ajax" onclick="test_ajax()" /> 63 </form> 64 </body> 65 </html>
second.jsp:
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 4 <html> 5 <head> 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 7 <title>Insert title here</title> 8 </head> 9 <body> 10 <hr> 11 the second page 12 <hr> 13 14 <% 15 String getStr = request.getParameter("name").toString(); 16 String transfer = new String(getStr.getBytes("ISO-8859-1"),"UTF-8"); 17 out.print(transfer); 18 %> 19 <%=request.getAttribute("name") %> 20 </body> 21 <%=request.getParameter("age")%> 22 <hr> 23 中文支持- 24 </html>