Question

我是学习Javascipt的初学者。我想要做的是使用javascript代码从Koha库系统获取数据。 Koha使用Apache2 Web服务器和MySQL数据库来存储目录。

我的代码是：

<!DOCTYPE html>
<html>
<body>

<div id="demo"><h2>Result</h2></div>


<script>
  var xhttp = new XMLHttpRequest();
  xhttp.open("GET","http://127.0.0.1:8080/cgi-bin/koha/svc/bib/3?userid=user&password=user1", false);
  xhttp.send();

  xmlDoc = xhttp.responseXML;
  txt = "";
  x = xmlDoc.getElementsByTagName("a");
  for (i = 0; i < x.length; i++) {
  txt += x[i].childNodes[0].nodeValue + "<br>";
   }
   document.getElementById("demo").innerHTML = txt;
</script>

</body>
</html>

它不起作用。

当我输入网址时：

http://127.0.0.1:8080/cgi-bin/koha/svc/bib/3?userid=user&password=user1

在我的浏览器中我得到了这个

This XML file does not appear to have any style information associated with it. The document tree is shown below.

    <record xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.loc.gov/MARC21/slim" xsi:schemaLocation="http://www.loc.gov/MARC21/slim http://www.loc.gov/standards/marcxml/schema/MARC21slim.xsd">
    <leader>00099nam a22000617a 4500</leader>
    <datafield tag="020" ind1=" " ind2=" ">
    <subfield code="a">234234</subfield>
    </datafield>
    <datafield tag="245" ind1=" " ind2=" ">
    <subfield code="a">Harry Potter</subfield>
    </datafield>
    <datafield tag="999" ind1=" " ind2=" ">
    <subfield code="c">3</subfield>
    <subfield code="d">3</subfield>
    </datafield>
    </record>

我想使用javascript获取输出。请帮忙！

Answer 1

如果jQuery是一个选项，我建议将它用于您的ajax调用和XML处理。我将您的xml结果作为文件保存在本地作为“Temp.xml”，并在本地Web服务器上创建了下面的页面。 $.get("Temp.xml")调用是一个ajax调用，它将文件作为XML文档提取到内存中。从那里，我使用jQuery来查找我想要的节点并将它们写入页面。（document.write可能不是获取页面数据的最佳方式，但它可以完成工作以进行演示。）

<!DOCTYPE html>
<html>
<body>

<div id="demo"><h2>Result</h2></div>

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.2/jquery.js"></script>
<script>
    // Get the xml via a "GET" request.  When it's done, process the results.
    $.get("Temp.xml").done(function(xmlDoc) {
        // The resulting xml is basically a bunch of datafield nodes that contain
        // subfield nodes. Write each datafield values and then each of their
        // subfield values.
        $(xmlDoc).find("datafield").each(function(index, datafield) {
            // getAttribute can be used on native elements to get their attribute values...
            document.write('datafield[tag] = ' + datafield.getAttribute('tag'));
            document.write('<br>');

            // $(...) wraps an element with jQuery functionality and allows you quickly
            // and easily find / process particular notes.
            $(datafield).find("subfield").each(function(index, subfield) {
                document.write(' &nbsp; &nbsp; '); // for indentation
                document.write('subfield[code] = ' + subfield.getAttribute('code'));
                document.write(', '); // for indentation
                document.write('subfield = ' + subfield.textContent);
                document.write('<br>');
            });
        });
    });
</script>

</body>
</html>

我想写一个javascript代码来从koha（一个ILS）获取数据

1 个答案: