没有空格的mongodb print json，即不开心的json [英] mongodb print json without whitespace i.e. unpretty json

问题描述

我正在使用mongodb 2.2.0并尝试在一行中打印json而不是使用 printjson（）或<$ c $打印漂亮 C>找到（）。漂亮（）。即我需要以json格式列出的文件，只需运行命令 db.collection.find（）。limit（10），但我需要使用游标完成在javascript文件中，如下所示：

I'm using mongodb 2.2.0 and am trying to print json in a single line as opposed to "pretty" printing using printjson() or find().pretty(). i.e. I need the documents listed in json format as done by just running the command db.collection.find().limit(10), but I need it done using a cursor in a javascript file as follows:

var cursor = db.collection.find().sort({_id:-1}).limit(10000);
while(cursor.hasNext()){
    //printNonPrettyJson(cursor.next()); //How???!
}

print（）不做这个工作，只是打印一些关于对象标识符的乱码。

print() doesn't do the job, it just prints some gibberish about the object identifier.

我想要这个的原因是因为我从控制台调用javascript文件，然后将输出传递给文件，如下所示：

The reason I want this is because I'm calling the javascript file from the console and then passing the output to a file as follows:

mongo mydatabase myjsfile.js >> /tmp/myoutput.txt

编辑：我想要输出如下：

I want the output as follows:

> db.zips.find().limit(2)
{ "city" : "ACMAR", "loc" : [ -86.51557, 33.584132 ], "pop" : 6055, "state" : "A
L", "_id" : "35004" }
{ "city" : "ADAMSVILLE", "loc" : [ -86.959727, 33.588437 ], "pop" : 10616, "stat
e" : "AL", "_id" : "35005" }
>

而不是：

> db.zips.find().limit(2).pretty()
{
        "city" : "ACMAR",
        "loc" : [
                -86.51557,
                33.584132
        ],
        "pop" : 6055,
        "state" : "AL",
        "_id" : "35004"
}
{
        "city" : "ADAMSVILLE",
        "loc" : [
                -86.959727,
                33.588437
        ],
        "pop" : 10616,
        "state" : "AL",
        "_id" : "35005"
}
>

由所有其他方法给出。同样，我需要使用游标对象。

as is given by all the other methods. Again, I need this using a cursor object.

推荐答案

var cursor = db.collection.find().sort({_id:-1}).limit(10000);
while(cursor.hasNext()){
    printjsononeline(cursor.next());
}

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