Python如何用dom模块生成XML文

发布时间:2019-08-27 08:03:04编辑:auto阅读(1692)

    Python如何用dom模块生成XML文件呢?

    主要方法三点:

    首先、生成XML节点(node)

    createElement("node_name")

    然后、给节点添加属性值(Attribute)

    node.setAttribute("att_name", "arr_value")

    最后、节点的标签值(data)

    createTextNode("node_value")

    其中第1、3点在创建完节点(节点值)之后,还需使用下面的方法添加到指点的节点的位置下面:

    prev_node.appendChild(cur_node)

    这里的prev_node要添加节点的上一层节点,而cur_node即为当前要添加的节点了。

    代码如下:

    Created on 2012-8-28   

    @author:  walfred 

    @module: domxml.genXML  

    @description: 

    '''  

    import xml.dom.minidom as Dom  

     

    if __name__ == "__main__":  

        doc = Dom.Document()  

        root_node = doc.createElement("book_store")  

        root_node.setAttribute("name", "newhua")  

        root_node.setAttribute("website", "CODEGO.net")  

        doc.appendChild(root_node)  

     

        book_node = doc.createElement("book1")  

     

        book_name_node = doc.createElement("name")  

        book_name_value = doc.createTextNode("hamlet")  

        book_name_node.appendChild(book_name_value)  

        book_node.appendChild(book_name_node)  

     

        book_author_node = doc.createElement("author")  

        book_author_value = doc.createTextNode("William Shakespeare")  

        book_author_node.appendChild(book_author_value)  

        book_node.appendChild(book_author_node)  

     

        root_node.appendChild(book_node)  

     

        f = open("book_store.xml", "w")  

        f.write(doc.toprettyxml(indent = "\t", newl = "\n", encoding = "utf-8"))  

        f.close()



    这个代码将在当前目录下生成一个book_store.xml文件:

    <?xml version="1.0" encoding="utf-8"?>  

    <book_store name="newhua" website="CODEGO.net">  

        <book1>  

            <name>hamlet</name>  

            <author>William Shakespeare</author>  

        </book1>  

    </book_store>



    代码如下:

    Created on 2012-8-28  

     

    @author:  walfred 

    @module: domxml.wXMLbyDom  

    @description: 

     

    import xml.dom.minidom as Dom  

     

    class XMLGenerator:  

        def __init__(self, xml_name):  

            self.doc = Dom.Document()  

            self.xml_name = xml_name  

     

        def createNode(self, node_name):  

            return self.doc.createElement(node_name)  

     

        def addNode(self, node, prev_node = None):  

            cur_node = node  

            if prev_node is not None:  

                prev_node.appendChild(cur_node)  

            else:  

                self.doc.appendChild(cur_node)  

            return cur_node  

     

        def setNodeAttr(self, node, att_name, value):  

            cur_node = node  

            cur_node.setAttribute(att_name, value)  

     

        def setNodeValue(self, cur_node, value):  

            node_data = self.doc.createTextNode(value)  

            cur_node.appendChild(node_data)  

     

        def genXml(self):  

            f = open(self.xml_name, "w")  

            f.write(self.doc.toprettyxml(indent = "\t", newl = "\n", encoding = "utf-8"))  

            f.close()  

     

    if __name__ == "__main__":  

        myXMLGenerator = XMLGenerator("book_store.xml")  

     

        #xml root node  

        node_book_store = myXMLGenerator.createNode("book_store")  

        myXMLGenerator.setNodeAttr(node_book_store, "name", "new hua")  

        myXMLGenerator.setNodeAttr(node_book_store, "website", "CODEGO.net")  

        myXMLGenerator.addNode(node = node_book_store)  

     

        #book01  

        node_book_01 = myXMLGenerator.createNode("book")  

     

        node_book_01_name = myXMLGenerator.createNode("name")  

        myXMLGenerator.setNodeValue(node_book_01_name, "Hamlet")  

        myXMLGenerator.addNode(node_book_01_name, node_book_01)  

     

        node_book_01_author = myXMLGenerator.createNode("author")  

        myXMLGenerator.setNodeValue(node_book_01_author, "William Shakespeare")  

        myXMLGenerator.addNode(node_book_01_author, node_book_01)  

     

        node_book_01_price = myXMLGenerator.createNode("price")  

        myXMLGenerator.setNodeValue(node_book_01_price, "$20")  

        myXMLGenerator.addNode(node_book_01_price, node_book_01)  

     

        node_book_01_grade = myXMLGenerator.createNode("grade")  

        myXMLGenerator.setNodeValue(node_book_01_grade, "good")  

        myXMLGenerator.addNode(node_book_01_grade, node_book_01)  

     

        myXMLGenerator.addNode(node_book_01, node_book_store)  

     

        #book 02  

        node_book_02 = myXMLGenerator.createNode("book")  

     

        node_book_02_name = myXMLGenerator.createNode("name")  

        myXMLGenerator.setNodeValue(node_book_02_name, "shuihu")  

        myXMLGenerator.addNode(node_book_02_name, node_book_02)  

     

        node_book_02_author = myXMLGenerator.createNode("author")  

        myXMLGenerator.setNodeValue(node_book_02_author, "naian shi")  

        myXMLGenerator.addNode(node_book_02_author, node_book_02)  

     

        node_book_02_price = myXMLGenerator.createNode("price")  

        myXMLGenerator.setNodeValue(node_book_02_price, "$200")  

        myXMLGenerator.addNode(node_book_02_price, node_book_02)  

     

        node_book_02_grade = myXMLGenerator.createNode("grade")  

        myXMLGenerator.setNodeValue(node_book_02_grade, "good")  

        myXMLGenerator.addNode(node_book_02_grade, node_book_02)  

     

        myXMLGenerator.addNode(node_book_02, node_book_store)  

     

        #gen  

        myXMLGenerator.genXml()

    同样这个方法会在本目录下生成一个book_store.xml文件,代码如下:

    <?xml version="1.0" encoding="utf-8"?>  

    <book_store name="new hua" website="CODEGO.net">  

        <book>  

            <name>Hamlet</name>  

            <author>William Shakespeare</author>  

            <price>$20</price>  

            <grade>good</grade>  

        </book>  

        <book>  

            <name>shuihu</name>  

            <author>naian shi</author>  

            <price>$200</price>  

            <grade>good</grade>  

        </book>  

    </book_store>


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