小程序DOM解析 webservices 返回来的json数据

1.下载xmldom库：https://github.com/jindw/xmldom
2.新建一个lib文件夹，将dom-parser.js、dom.js、entities.js、sax.js拷贝到lib文件夹下
3.在需要解析xml的js头部引入dom-parser.js，如：var Parser = require('../../../lib/dom-parser')
 

 xml

<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope
    xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <soapenv:Body>
        <ns1:getMaterialsResponse soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
            xmlns:ns1="http://service.ws.*.com/">
            <getMaterialsReturn xsi:type="xsd:string">[{"name":"GL201","number":"1202001"}]</getMaterialsReturn>
        </ns1:getMaterialsResponse>
    </soapenv:Body>
</soapenv:Envelope>

/**输入搜索框，请求后端数据 */
  searchMterialList: function() {
    var method = 'getMaterials';
    //wsdlurl中设置需要访问的webservice的url地址
    var wsdlurl = 'http://127.0.0.1:56898/ormrpc/services/WSLyFacade?wsdl';
    //var targetNamespace = 'http://service.ws.*.com/'; 这个也可以用
    var targetNamespace = 'http://127.0.0.1:56898/ormrpc/services/WSLyFacade';
    //datacopy中拼字符串，即http传输中的soap信息
    var datacopy = '<?xml version="1.0" encoding="utf-8"?>';
    datacopy += '<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"     xmlns:ser="http://service.ws.*.com/">';
    datacopy += '<soapenv:Header/>';
    datacopy += '<soapenv:Body>';
    //接着拼你要访问的方法名、参数名和你传递的实参值，比如我要访问的方法是getReader(String arg0,int arg1)
    //而我的实际调用是getReader('libsys',2)，所以拼字符串如下
    datacopy += '<ser:getMaterials>'; //方法名
    datacopy += '<ser:arg0>G</ser:arg0>';//参数
    datacopy += '</ser:getMaterials>';
    datacopy += '</soapenv:Body>';
    datacopy += '</soapenv:Envelope>';

    wx.request({
      url: wsdlurl,
      data: datacopy,
      method: 'POST', // OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE, CONNECT 
      header: {
        'content-type': 'text/xml; charset=utf-8',
        'SOAPAction': targetNamespace + method,
      },
      success(res) {
        var XMLParser = new Parser.DOMParser() //小程序导入dom解析插件
        var doc = XMLParser.parseFromString(res.data)
        var a = doc.getElementsByTagName('getMaterialsReturn')['0'].childNodes[0].nodeValue;
         //var b = doc.getElementsByTagName('name')['0'];
        //console.log(res.data);
       // console.log(doc);
         console.log(a);
        //console.log(b);
      }
    })
  }

得到json：

[{"name":"GL201","number":"1202001"}]