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XMLDOM是用来访问和操作XML文档的编程接口规范。
1、简介 XMLDOM被设计为可用于任何语言和任何操作系统。借助DOM,程序员可以创建XML文档、遍历其结构,增、改、删其元素。飞.飞Asp技术乐园DOM将整个XML文档视作一棵树,文档级的元素是树的根。
2、MS的XML解析,IE5.0以上。 是一个COM组件,至少包含下列对象: (1)Micosoft.XMLDOM (2)Micosoft.XMLDOM.parseError,有如下属性:
Property |
Description |
errorCode |
Returns a long integer error code |
reason |
Returns a string explaining the reason for the error |
line |
Returns a long integer representing the line number for the error |
linePos |
Returns a long integer representing the line position for the error |
srcText |
Returns a string containing the line that caused the error |
url |
Returns the url pointing the loaded document |
filePos |
Returns a long integer file position of the error |
(3)Microsoft.XMLHTTP,有如下属性:
Property |
Description |
readyState |
Returns the state of the document |
responseBody |
Returns the response as an array of unsigned bytes |
responseStream |
Returns the response as an IStream |
responseText |
Returns the response as a string |
responseXML |
Returns the response as an xml document |
status |
Returns the status code as a number |
statusText |
Returns the status as a string |
有如下方法:
Property |
Description |
abort() |
Cancel the current http request |
getAllResponseHeaders() |
Returns the value of the http headers |
getResponseHeader(headerName) |
Returns the value of one specified http header |
open(method, url, async, userid, password) |
Opens http request, and specifies the information |
send() |
Send the http request to the server |
setRequestHeader(headerName,headerValue) |
Specifies the name of a http header |
(4)Node的类型
nodeType |
Named Constant |
nodeTypeString |
nodeName |
nodeValue |
1 |
ELEMENT_NODE |
element |
tagName |
null |
2 |
ATTRIBUTE_NODE |
attribute |
name |
value |
3 |
TEXT_NODE |
text |
#text |
content of node |
4 |
CDATA_SECTION_NODE |
cdatasection |
#cdata-section |
content of node |
5 |
ENTITY_REFERENCE_NODE |
entityreference |
entity reference name |
null |
6 |
ENTITY_NODE |
entity |
entity name |
null |
7 |
PROCESSING_INSTRUCTION_NODE |
processinginstruction |
target |
content of node |
8 |
COMMENT_NODE |
comment |
#comment |
comment text |
9 |
DOCUMENT_NODE |
document |
#document |
null |
10 |
DOCUMENT_TYPE_NODE |
documenttype |
doctype name |
null |
11 |
DOCUMENT_FRAGMENT_NODE |
documentfragment |
#document fragment |
null |
12 |
NOTATION_NODE |
notation |
notation name |
null |
W3C规定的属性:
Property |
Description |
attributes |
Returns a NamedNodeMap containing all attributes for this node |
childNodes |
Returns a NodeList containing all the child nodes for this node |
firstChild |
Returns the first child node for this node |
lastChild |
Returns the last child node for this node |
nextSibling |
Returns the next sibling node. Two nodes are siblings if they have the same parent node |
nodeName |
Returns the nodeName, depending on the type |
nodeType |
Returns the nodeType as a number |
nodeValue |
Returns, or sets, the value of this node, depending on the type |
ownerDocument |
Returns the root node of the document |
parentNode |
Returns the parent node for this node |
previousSibling |
Returns the previous sibling node. Two nodes are siblings if they have the same parent node |
W3C规定的方法:
Method |
Description |
appendChild(newChild) |
Appends the node newChild at the end of the child nodes for this node |
cloneNode(boolean) |
Returns an exact clone of this node. If the boolean value is set to true, the cloned node contains all the child nodes as well |
hasChildNodes() |
Returns true if this node has any child nodes |
insertBefore(newNode,refNode) |
Inserts a new node, newNode, before the existing node, refNode |
removeChild(nodeName) |
Removes the specified node, nodeName |
replaceChild(newNode,oldNode) |
Replaces the oldNode, with the newNode |
(5)NodeList的W3C规定的属性和方法。
Property |
Description |
length |
Returns the number of nodes in a nodeList |
Method |
Description |
item |
Returns a specific node in the nodeList |
XMLHTTP对象及其方法 ------------------ MSXML中提供了Microsoft.XMLHTTP对象,能够完成从数据包到Request对象的转换以及发送任务。 创建XMLHTTP对象的语句如下: Set objXML = CreateObject("Msxml2.XMLHTTP") 或 Set objXML = CreateObject(“Microsoft.XMLHTTP”) ' Or, for version 3.0 of XMLHTTP, use: ' Set xml = Server.CreateObject("MSXML2.ServerXMLHTTP") 对象创建后调用Open方法对Request对象进行初始化,语法格式为: poster.open http-method, url, async, userID, password Open方法中包含了5个参数,前三个是必要的,后两个是可选的(在服务器需要进行身份验证时提供)。参数的含义如下所示: http-method: HTTP的通信方式,比如GET或是 POST url: 接收XML数据的服务器的URL地址。通常在URL中要指明 ASP或CGI程序 async: 一个布尔标识,说明请求是否为异步的。如果是异步通信方式(true),客户机就不等待服务器的响应;如果是同步方式(false),客户机就要等到服务器返回消息后才去执行其他操作 userID 用户ID,用于服务器身份验证 password 用户密码,用于服务器身份验证 XMLHTTP对象的Send方法 用Open方法对Request对象进行初始化后,调用Send方法发送XML数据: poster.send XML-data Send方法的参数类型是Variant,可以是字符串、DOM树或任意数据流。发送数据的方式分为同步和异步两种。在异步方式下,数据包一旦发送完毕,就结束Send进程,客户机执行其他的操作;而在同步方式下,客户机要等到服务器返回确认消息后才结束Send进程。 XMLHTTP对象中的readyState属性能够反映出服务器在处理请求时的进展状况。客户机的程序可以根据这个状态信息设置相应的事件处理方法。属性值及其含义如下表所示: 值 说明 0 Response对象已经创建,但XML文档上载过程尚未结束 1 XML文档已经装载完毕 2 XML文档已经装载完毕,正在处理中 3 部分XML文档已经解析 4 文档已经解析完毕,客户端可以接受返回消息 客户机处理响应信息 客户机接收到返回消息后,进行简单的处理,基本上就完成了C/S之间的一个交互周期。飞飞Asp技术乐园客户机接收响应是通过XMLHTTP对象的属性实现的: ● responseTxt:将返回消息作为文本字符串; ● responseXML:将返回消息视为XML文档,在服务器响应消息中含有XML数据时使用; ● responseStream:将返回消息视为Stream对象。
下面的xml文件是动态生成的最后用xmlHTTP传送出去,这是一个在客户端JavaScript脚本里的内容,当然你也可以写在服务器,但是要相应的改一些东西:(仅供大家参考,了解它的用法) var xmlDoc=new ActiveXObject("MSXML2.DOMDocument"); flag=xmlDoc.loadXML("");
newNode =xmlDoc.createElement("编码") MarkNode=xmlDoc.documentElement.appendChild(newNode); newNode =xmlDoc.createElement("StartMark") newNode.text=StartMark; MarkNode.appendChild(newNode) newNode =xmlDoc.createElement("EndMark") newNode.text=EndMark; MarkNode.appendChild(newNode) newNode =xmlDoc.createElement("日期") DateNode=xmlDoc.documentElement.appendChild(newNode); newNode =xmlDoc.createElement("StartDate"); newNode.text=StartDate; DateNode.appendChild(newNode) newNode =xmlDoc.createElement("EndDate") newNode.text=EndDate; DateNode.appendChild(newNode); newNode =xmlDoc.createElement("数量") SLNode =xmlDoc.documentElement.appendChild(newNode); newNode =xmlDoc.createElement("StartSL") newNode.text=StartShuL SLNode.appendChild(newNode) newNode =xmlDoc.createElement("EndSL"); newNode.text=EndShuL SLNode.appendChild(newNode); newNode =xmlDoc.createElement("单价") DJNode =xmlDoc.documentElement.appendChild(newNode) newNode =xmlDoc.createElement("StartDJ") newNode.text=StartDanJ; DJNode.appendChild(newNode); newNode =xmlDoc.createElement("EndDJ") newNode.text=EndDanJ; DJNode.appendChild(newNode); newNode =xmlDoc.createElement("金额") JENode =xmlDoc.documentElement.appendChild(newNode) newNode =xmlDoc.createElement("StartJE") newNode.text=StartJinE JENode.appendChild(newNode) newNode =xmlDoc.createElement("EndJE") newNode.text=EndJinE JENode.appendChild(newNode) newNode =xmlDoc.createElement("仓库代码") newNode.text=CK; xmlDoc.documentElement.appendChild(newNode) newNode =xmlDoc.createElement("票号") newNode.text=RKPH; xmlDoc.documentElement.appendChild(newNode) newNode =xmlDoc.createElement("单位代码") newNode.text=CorpName; xmlDoc.documentElement.appendChild(newNode) newNode =xmlDoc.createElement("BiaoShi") newNode.text=Biaoshi xmlDoc.documentElement.appendChild(newNode) newNode =xmlDoc.createElement("FindCate") newNode.text=FindCate xmlDoc.documentElement.appendChild(newNode) var xh =new ActiveXObject("MSXML2.XMLHTTP") xh.open("POST","Find.asp",false) xh.setRequestHeader("Content-Type","text/xml") xh.setRequestHeader("Content-Type","gb2312") xh.send(xmlDoc); 我的每一个newNode的text值是一个变量,也就是我客户端form 中input的值
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