以下是使用Xstream创建的简单JSON对象.它是一个有效的JavaScript对象.Actualy我想询问如何访问第一人称信息,如id,用户名,密码等.但是当我在浏览器中查看此文件时,显示的网页没有显示"21".我希望页面显示21.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script>
var obj = {"records":[
{"beans.Person":[
{"id":21,"name":"Name21","username":"Username21","password":"password21","age":41,"sex":true},
{"id":22,"name":"Name22","username":"Username22","password":"password22","age":42,"sex":true},
{"id":23,"name":"Name23","username":"Username23","password":"password23","age":43,"sex":true},
{"id":24,"name":"Name24","username":"Username24","password":"password24","age":44,"sex":true},
{"id":25,"name":"Name25","username":"Username25","password":"password25","age":45,"sex":true},
{"id":26,"name":"Name26","username":"Username26","password":"password26","age":46,"sex":true},
{"id":27,"name":"Name27","username":"Username27","password":"password27","age":47,"sex":true},
{"id":28,"name":"Name28","username":"Username28","password":"password28","age":48,"sex":true},
{"id":29,"name":"Name29","username":"Username29","password":"password29","age":49,"sex":true},
{"id":30,"name":"Name30","username":"Username30","password":"password30","age":50,"sex":true}
]
}
]
}
document.write(obj.records[0].beans.Person[0].id);
</script>
</head>
<body>
</body>
</html>
但是当我在浏览器中查看此文件时,显示的网页未显示21.我希望页面显示21.
您只需复制并粘贴源代码并进行尝试即可.它没有显示21.我如何访问这些值.
我正在Windows 8 64位OS上开发Qt应用程序。我遇到了这种奇怪的情况，其中MD5消息摘要只有4个字符长（仅= 32位。）。除此特殊输入外，我得到16个字符（= 128位）的消息摘要字符串。
我的代码段
qDebug()<<"Case 1:=> ";
message1="HYQPTPORKTWKJSVIVXHS1.130hello world!";
input.append(message1);
output=QCryptographicHash::hash(input,QCryptographicHash::Md5);
QString digest1(QString(output).toAscii());
qDebug()<<"md5 string: "<<digest1;
qDebug()<<"length :"<<digest1.length();
qDebug()<<"Case 2:=>";
input=""; // clears previous input
message2="HYQPTPORKTWKJSVIVXHS1.131hello world!"; // put anything else than message1
input.append(message2);
output=QCryptographicHash::hash(input,QCryptographicHash::Md5);
QString digest2(QString(output).toAscii());
qDebug()<<"md5 string: "<<digest2;
qDebug()<<"length :"<<digest2.length();
输出量
Case 1:=>
md5 string: ")QÄ"
length : 4 // here I'm expecting 16
Case 2:=>
md5 string: "X,öéö< Ú4Îu"
length : 16
难道我做错了什么？