{
"programmers": [
{ "firstName": "Brett","lastName":"McLaughlin","email": "brett@newInstance.com" },{ "firstName": "Jason","lastName":"Hunter","email": "jason@servlets.com" },{ "firstName": "Elliotte","lastName":"Harold","email": "elharo@macfaq.com" }
],"authors": [
{ "firstName": "Isaac","lastName": "Asimov","genre": "science fiction" },{ "firstName": "Tad","lastName": "Williams","genre": "fantasy" },{ "firstName": "Frank","lastName": "Peretti","genre": "christian fiction" }
],"musicians": [
{ "firstName": "Eric","lastName": "clapton","instrument": "guitar" },{ "firstName": "Sergei","lastName": "Rachmaninoff","instrument": "piano" }
]
}
2、jsp页面
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getcontextpath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <script type="text/javascript"> var xmlHttp=null; //创建XMLhttprequest对象 if(window.XMLHttpRequest){ xmlHttp=new XMLHttpRequest(); }else{ xmlHttp=new ActiveObject("Microsoft.XMLHTTP"); } function myclick(){ try{ xmlHttp.onreadystatechange=handleStateChange; xmlHttp.open("get","json.txt",true); xmlHttp.send(); } catch(exception){ alert("xmlHttp fail"); } } function handleStateChange(){ if(xmlHttp.readyState==4 && xmlHttp.status==200){ var result=xmlHttp.responseText; var json=eval("("+result+")"); alert(json.programmers[0].firstName); } } </script> </head> <body> <div> <input type="button" value="AjaxTest" onclick="myclick()"/> </div> </body> </html>
原文地址：https://www.jb51.cc/ajax/165610.html
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