JSON字符串形成不当在.NET中使用Jayrock

Question

我试图使用Jayrock.JSON一个aspx页面返回一个JSON对象。 我写出来的代码是这样的：

using (JsonTextWriter writer = new JsonTextWriter(Response.Output))
    {
        writer.WriteStartObject();
        for (int i = 0; i < rdr.FieldCount; i++)
        {
            writer.WriteMember(rdr.GetName(i).ToString());
            writer.WriteString(rdr[i].ToString());
        }
        writer.WriteEndObject();
    }

这是一个rdr.Read()环的内侧。

在输出JSON看起来像这样：（虽然我手动添加换行符）

{
"BugID":"1087",
"AddedBy":"",
"BugDate":"5/2/2010 9:45:34 AM",
"BugTitle":"/admin/ajax_thirdpartylog.asp",
"Classify":""
,"ErrPage":"/admin/ajax_thirdpartylog.asp",
"StoreID":"71",
"UserID":"15438",
"ErrDesc":"Type mismatch: 'formatnumber'",
"ErrDump":"*** VARIABLES DUMP ***\r\n\r\n*** Form Variables ***\r\n\r\ncalmonth : 8\r\ncalmonth2 : 8\r\nfromdate : 8/1/2009\r\ncalyear : 2009\r\ntodate : 8/31/2009\r\ncalyear2 : 2009\r\nr : 978402\r\nthirdtype : 1\r\nButton : Generate Third Party Log\r\n\r\n*** Query String Variables ***\r\n\r\n\r\n\r\n*** REPORT END ***\r\n",
"ErrLine":"74",
"DateFixed":"",
"Counter":"16",
"AssignTo":""
 }
 {
"BugID":"1086",
"AddedBy":"",
"BugDate":"5/1/2010 11:58:54 PM",
"BugTitle":"/admin/Charts/monthsales_s.asp",
"Classify":"",
"ErrPage":"/admin/Charts/monthsales_s.asp",
"StoreID":"402",
"UserID":"141928",
"ErrDesc":"Script timed out",
"ErrDump":"*** VARIABLES DUMP ***\r\n\r\n*** Form Variables ***\r\n\r\n\r\n*** Query String Variables ***\r\n\r\nmonth1 : 9/1/2009\r\nr : 75333803\r\n\r\n\r\n*** REPORT END ***\r\n",
"ErrLine":"0",
"DateFixed":"",
"Counter":"",
"AssignTo":""
 }

我真的不知道我在做什么错的，但在我的页面阅读本JSON，当我尝试做.evalJSON（使用prototypejs）我得到的错误说，JSON格式不正确。 谁能告诉我该怎么改变？

Answer 1

此：

"AssignTo":"" 
 } 
 { 

是无效JSON。你可以看到一个字符串，如果它是有效的JSON在 JSON林特。我不知道这应该是什么样子，但一个空对象会是这样的（不需要“”，括号逆转，缺少逗号）：

"AssignTo": 
 { 
 }, 

Answer 2

但问题是，你是什么，而你可能想要做的是产生JSON的JSON对象数组写多个JSON对象。鉴于您的代码段，我假设rdr持有一些IDataReader实现像SqlDataReader。如果这是真的，那么你需要修改代码以开始和结束围绕外JSON数组的阅读的循环，如下：

using (JsonTextWriter writer = new JsonTextWriter(Response.Output))
{        
    writer.WriteStartArray();
    while (rdr.Read())
    {
        writer.WriteStartObject();
        for (int i = 0; i < rdr.FieldCount; i++)
        {
            writer.WriteMember(rdr.GetName(i).ToString());
            writer.WriteString(rdr[i].ToString());
        }
        writer.WriteEndObject();
    }
    writer.WriteEndArray();
}

Jayrock将自动用逗号分隔的每个JSON对象值（，）JSON数组内时所以现在的输出应类似于下面的和有效的JSON：

[
    {
        "BugID":"1087",
        "AddedBy":"",
        "BugDate":"5/2/2010 9:45:34 AM",
        "BugTitle":"/admin/ajax_thirdpartylog.asp",
        "Classify":""
        ,"ErrPage":"/admin/ajax_thirdpartylog.asp",
        "StoreID":"71",
        "UserID":"15438",
        "ErrDesc":"Type mismatch: 'formatnumber'",
        "ErrDump":"*** VARIABLES DUMP ***\r\n\r\n*** Form Variables ***\r\n\r\ncalmonth : 8\r\ncalmonth2 : 8\r\nfromdate : 8/1/2009\r\ncalyear : 2009\r\ntodate : 8/31/2009\r\ncalyear2 : 2009\r\nr : 978402\r\nthirdtype : 1\r\nButton : Generate Third Party Log\r\n\r\n*** Query String Variables ***\r\n\r\n\r\n\r\n*** REPORT END ***\r\n",
        "ErrLine":"74",
        "DateFixed":"",
        "Counter":"16",
        "AssignTo":""
    },
    {
        "BugID":"1086",
        "AddedBy":"",
        "BugDate":"5/1/2010 11:58:54 PM",
        "BugTitle":"/admin/Charts/monthsales_s.asp",
        "Classify":"",
        "ErrPage":"/admin/Charts/monthsales_s.asp",
        "StoreID":"402",
        "UserID":"141928",
        "ErrDesc":"Script timed out",
        "ErrDump":"*** VARIABLES DUMP ***\r\n\r\n*** Form Variables ***\r\n\r\n\r\n*** Query String Variables ***\r\n\r\nmonth1 : 9/1/2009\r\nr : 75333803\r\n\r\n\r\n*** REPORT END ***\r\n",
        "ErrLine":"0",
        "DateFixed":"",
        "Counter":"",
        "AssignTo":""
    }
]