python实现xml的简单操作

# -*- coding: utf-8 -*- import sys from PyQt5 import QtCore, QtGui, QtWidgets from xml.etree.ElementTree import ElementTree, Element import xml.dom.minidom def read_xml(in_path): '''''读取并解析xml文件 in_path: xml路径 return: ElementTree''' tree = ElementTree() tree.parse(in_path) return tree def write_xml(tree, out_path): '''''将xml文件写出 tree: xml树 out_path: 写出路径''' tree.write(out_path,encoding="utf-8",xml_declaration=True ) def find_nodes(tree, path): '''''查找某个路径匹配的所有节点 tree: xml树 path: 节点路径''' return tree.findall( path ) def get_node_by_keyvalue(nodelist): '''''根据属性及属性值定位符合的节点，返回节点 nodelist: 节点列表 kv_map: 匹配属性及属性值map''' result_nodes = [] for node in nodelist: result_nodes.append(node) return result_nodes def change_node_properties(nodelist, kv_map, is_delete=False): '''''修改/增加 /删除 节点的属性及属性值 nodelist: 节点列表 kv_map:属性及属性值map''' for node in nodelist: for key in kv_map: if is_delete: if key in node.attrib: del node.attrib[key] else: node.set( key, kv_map.get( key ) ) def change_node_text(nodelist, text, is_add=False, is_delete=False): '''''改变/增加/删除一个节点的文本 nodelist:节点列表 text : 更新后的文本''' for node in nodelist: if is_add: node.text += text elif is_delete: node.text = "" else: node.text = text def create_node(tag, content): '''''新造一个节点 tag:节点标签 property_map:属性及属性值map content: 节点闭合标签里的文本内容 return 新节点''' element = Element( tag) element.text = content return element def add_child_node(nodelist, element): '''''给一个节点添加子节点 nodelist: 节点列表 element: 子节点''' for node in nodelist: node.append( element ) def del_node_by_tagkeyvalue(nodelist, tag): '''''同过属性及属性值定位一个节点，并删除之 nodelist: 父节点列表 tag:子节点标签 kv_map: 属性及属性值列表''' for parent_node in nodelist: children = parent_node.getchildren() for child in children: if child.tag == tag: parent_node.remove( child ) class Ui_MainWindow(object): def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow") MainWindow.resize(421, 429) self.centralwidget = QtWidgets.QWidget(MainWindow) self.centralwidget.setObjectName("centralwidget") self.label = QtWidgets.QLabel(self.centralwidget) self.label.setGeometry(QtCore.QRect(90, 50, 251, 41)) font = QtGui.QFont() font.setFamily("宋体") font.setPointSize(20) font.setBold(True) font.setUnderline(True) font.setWeight(75) self.label.setFont(font) self.label.setObjectName("label") self.DIR_File = QtWidgets.QPushButton(self.centralwidget) self.DIR_File.setGeometry(QtCore.QRect(140, 120, 151, 41)) font = QtGui.QFont() font.setFamily("宋体") font.setPointSize(11) font.setBold(True) font.setItalic(False) font.setUnderline(False) font.setWeight(75) font.setStrikeOut(False) font.setKerning(True) self.DIR_File.setFont(font) self.DIR_File.setCursor(QtGui.QCursor(QtCore.Qt.ArrowCursor)) self.DIR_File.setMouseTracking(False) self.DIR_File.setObjectName("DIR_File") self.Add_Del = QtWidgets.QPushButton(self.centralwidget) self.Add_Del.setGeometry(QtCore.QRect(140, 190, 151, 41)) font = QtGui.QFont() font.setFamily("宋体") font.setPointSize(10) font.setBold(True) font.setItalic(False) font.setWeight(75) self.Add_Del.setFont(font) self.Add_Del.setObjectName("Add_Del") self.Replace = QtWidgets.QPushButton(self.centralwidget) self.Replace.setGeometry(QtCore.QRect(140, 260, 151, 41)) font = QtGui.QFont() font.setFamily("宋体") font.setPointSize(10) font.setBold(True) font.setItalic(False) font.setWeight(75) self.Replace.setFont(font) self.Replace.setObjectName("Replace") self.Cat = QtWidgets.QPushButton(self.centralwidget) self.Cat.setGeometry(QtCore.QRect(140, 330, 151, 41)) font = QtGui.QFont() font.setFamily("宋体") font.setPointSize(10) font.setBold(True) font.setItalic(False) font.setWeight(75) self.Cat.setFont(font) self.Cat.setObjectName("Cat") # MainWindow.setCentralWidget(self.centralwidget) self.menubar = QtWidgets.QMenuBar(MainWindow) self.menubar.setGeometry(QtCore.QRect(0, 0, 421, 23)) self.menubar.setObjectName("menubar") self.menu = QtWidgets.QMenu(self.menubar) self.menu.setObjectName("menu") # MainWindow.setMenuBar(self.menubar) self.statusbar = QtWidgets.QStatusBar(MainWindow) self.statusbar.setObjectName("statusbar") # MainWindow.setStatusBar(self.statusbar) self.menubar.addAction(self.menu.menuAction()) self.retranslateUi(MainWindow) self.DIR_File.clicked.connect(MainWindow.create_file) self.Add_Del.clicked.connect(MainWindow.add_del) self.Replace.clicked.connect(MainWindow.replace) self.Cat.clicked.connect(MainWindow.resouce_show) QtCore.QMetaObject.connectSlotsByName(MainWindow) def retranslateUi(self, MainWindow): _translate = QtCore.QCoreApplication.translate MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow")) self.label.setText(_translate("MainWindow", "XML文件的简单操作")) self.DIR_File.setText(_translate("MainWindow", "XML简单文件的创建")) self.Add_Del.setText(_translate("MainWindow", "XML节点的增加/删除")) self.Replace.setText(_translate("MainWindow", "XML节点文本的更改")) self.Cat.setText(_translate("MainWindow", "XML源文件的查看")) self.menu.setTitle(_translate("MainWindow", "菜单")) class DIR_Ui_Form(object): def setupUi(self, Form): Form.setObjectName("Form") Form.resize(203, 316) self.label = QtWidgets.QLabel(Form) self.label.setGeometry(QtCore.QRect(40, 30, 131, 21)) font = QtGui.QFont() font.setFamily("新宋体") font.setPointSize(10) font.setBold(True) font.setItalic(False) font.setWeight(75) self.label.setFont(font) self.label.setObjectName("label") self.Book_Name = QtWidgets.QLabel(Form) self.Book_Name.setGeometry(QtCore.QRect(10, 130, 54, 12)) font = QtGui.QFont() font.setFamily("宋体") font.setBold(True) font.setWeight(75) self.Book_Name.setFont(font) self.Book_Name.setObjectName("Book_Name") self.Book_Author = QtWidgets.QLabel(Form) self.Book_Author.setGeometry(QtCore.QRect(10, 170, 51, 16)) font = QtGui.QFont() font.setFamily("宋体") font.setBold(True) font.setWeight(75) self.Book_Author.setFont(font) self.Book_Author.setObjectName("Book_Author") self.Book_Pub = QtWidgets.QLabel(Form) self.Book_Pub.setGeometry(QtCore.QRect(10, 210,