如何实现条形码的恒定宽度；不管条形码.数据

Question

目前，我正在编写一个标签编写器(兄弟QL-570，如果重要的话，用Java语言)打印不同ID的条形码。条形码数据的长度可以从~17个字符到~3个字符不等。

然而，鉴于我对条形码概念的理解是正确的，数据越多，条形码就会变得越宽。

我更希望所有条形码都有相同的大小:不管数据长度如何。(如果条形码不填充标签，它就不好看，太大的话也不行)

当标签是固定大小(即29毫米x 90毫米)时，如何处理这个问题？，你/你的公司是如何解决这个问题的?二维条形码不是一个选项。可悲的是。

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Answer 1

如果你必须同时比较不同宽度的条形码，这看起来会很有趣，但我的公司通过用1x定义每个符号来解决这个问题？？位图并将其缩放到应用程序所需的大小。例如，除Stop外，每个代码128符号都有11个像素宽。我们的“字体”定义了107个字符，每个字符都是1x11黑白位图(PNG)。

如果你对垂直尺寸和水平尺寸有那么多的控制的话，它可以使条形码更简单地安装到空间中。

下面是一个与上面的图片类似的快速示例：

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    <img 
    alt="104,{Start B}" title="104,{Start B}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AC3gAT0BDuLeG4IAAAAASUVORK5CYII=" width="30" height="30"><img
    alt=" 17,A:{1},B:{1}" title=" 17,A:{1},B:{1}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AGMgAOkAhBjTObMAAAAASUVORK5CYII=" width="30" height="30"><img
    alt=" 18,A:{2},B:{2}" title=" 18,A:{2},B:{2}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADGgAQUA0nI/mr0AAAAASUVORK5CYII=" width="30" height="30"><img
    alt=" 19,A:{3},B:{3}" title=" 19,A:{3},B:{3}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADRgAMsAlQDS68kAAAAASUVORK5CYII=" width="30" height="30"><img
    alt=" 08,A:{(},B:{(}" title=" 08,A:{(},B:{(}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AHNgAUkA1ElZCJAAAAAASUVORK5CYII=" width="30" height="30"><img
    alt="106,{Stop}"title="106,{Stop}"src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA0AAAABAQMAAAA/57ZEAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADigARMA2dpJzT8AAAAASUVORK5CYII=" width="30" height="30">
    <p/>
    123
    <br>
    <p>&nbsp;</p>
    <img 
    alt="104,{Start B}" title="104,{Start B}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AC3gAT0BDuLeG4IAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 17,A:{1},B:{1}" title=" 17,A:{1},B:{1}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AGMgAOkAhBjTObMAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 18,A:{2},B:{2}" title=" 18,A:{2},B:{2}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADGgAQUA0nI/mr0AAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 19,A:{3},B:{3}" title=" 19,A:{3},B:{3}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADRgAMsAlQDS68kAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 20,A:{4},B:{4}" title=" 20,A:{4},B:{4}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADYgAI8AVxcQlAsAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 21,A:{5},B:{5}" title=" 21,A:{5},B:{5}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ACNgAKkAhD/i5lYAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 22,A:{6},B:{6}" title=" 22,A:{6},B:{6}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADFgAMUAksTlwtMAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 23,A:{7},B:{7}" title=" 23,A:{7},B:{7}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ABIgAEcAM15OsZIAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 24,A:{8},B:{8}" title=" 24,A:{8},B:{8}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ABZgAI8Ad3Mh6bwAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 25,A:{9},B:{9}" title=" 25,A:{9},B:{9}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ABpgAJcAex9glyQAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 16,A:{0},B:{0}" title=" 16,A:{0},B:{0}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AGJgAScAw0BJukMAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 17,A:{1},B:{1}" title=" 17,A:{1},B:{1}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AGMgAOkAhBjTObMAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 18,A:{2},B:{2}" title=" 18,A:{2},B:{2}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADGgAQUA0nI/mr0AAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 19,A:{3},B:{3}" title=" 19,A:{3},B:{3}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADRgAMsAlQDS68kAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 20,A:{4},B:{4}" title=" 20,A:{4},B:{4}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADYgAI8AVxcQlAsAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 21,A:{5},B:{5}" title=" 21,A:{5},B:{5}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ACNgAKkAhD/i5lYAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 22,A:{6},B:{6}" title=" 22,A:{6},B:{6}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADFgAMUAksTlwtMAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 23,A:{7},B:{7}" title=" 23,A:{7},B:{7}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ABIgAEcAM15OsZIAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 64,A:{NUL},B:{`}" title=" 64,A:{NUL},B:{`}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AF5gAR8Av0A69KoAAAAASUVORK5CYII=" width="9" height="30"><img
    alt="106,{Stop}"title="106,{Stop}"src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA0AAAABAQMAAAA/57ZEAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADigARMA2dpJzT8AAAAASUVORK5CYII=" width="9" height="30">
    <p/>
    12345678901234567

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请注意，每个字符都指定了尺寸，条形码通常会以8或更高的宽度扫描(取决于打印质量)。条形码中的所有字符都需要相同的宽度。请记住，您的水平静音区域是条形宽度的函数，因此请尽量在标签的两边保持至少两个字符宽度。

Answer 2

我认为最好的做法就是给你的数据贴上便条。

123

化作

00000000000000123

从想想其他地方是如何做到的，我以前在日常生活中肯定见过零个填充条形码。我认为最好的做法是选择一些你认为足够数年的数字，并将你的应用程序编码到这个数字。如果你最终不得不超越它，嗯，这是一个很好的问题，不是吗？