Python配置XML配置文件
# !/usr/bin/env python# -*- coding: utf-8 -*-# author:Rache# date:2020/3/19 22:02# desc: Tomcat组件配置初始化,适用版本 apache-tomcat-9.0.33from xml.etree.ElementTree import ElementTree, Elementdef read_x...
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# !/usr/bin/env python
# -*- coding: utf-8 -*-
# author:Rache
# date:2020/3/19 22:02
# desc: Tomcat组件配置初始化,适用版本 apache-tomcat-9.0.33
from xml.etree.ElementTree import ElementTree, Element
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 if_match(node, kv_map):
'''判断某个节点是否包含所有传入参数属性
node: 节点
kv_map: 属性及属性值组成的map'''
for key in kv_map:
if node.get(key) != kv_map.get(key):
return False
return True
# ---------------search -----
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, kv_map):
'''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:
if if_match(node, kv_map):
result_nodes.append(node)
return result_nodes
# ---------------change -----
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, property_map, 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, property_map)
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, kv_map):
'''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 and if_match(child, kv_map):
parent_node.remove(child)
if __name__ == "__main__":
# 1. 读取xml文件
tree = read_xml("./server.xml")
# 2.遍历节点测试:
root_node=tree.getroot()
# print("根节点:"+root_node.tag)
# print("根节点属性:",root_node.attrib)
#
# for child_node in root_node.iter('Service'):
# print(child_node.tag,child_node.attrib)
# 3.Server节点修改
server_nodes = get_node_by_keyvalue(find_nodes(tree, "Server"), {"shutdown": "SHUTDOWN"})
change_node_properties(server_nodes, {"port": "8010"}) # shutdown 默认端口8005改为8010
# 3.Connector节点修改,增加些属性
# A. 找到父节点
root_node = tree.getroot()
for node in root_node.iter('Connector'):
# 节点的标签名称和内容
print(node.tag, node.attrib)
# B. 通过属性准确定位子节点
connector_nodes = get_node_by_keyvalue(root_node.iter('Connector'), {"port": "8080"})
change_node_properties(connector_nodes, {"URIEncoding": "UTF-8","minSpareThreads":"25","maxSpareThreads":"300","maxThreads":"1000","acceptCount":"1000","server":"ni chou sha"})
# 3. Host节点修改,关闭热部署,增加默认项目路径
host_nodes = get_node_by_keyvalue(root_node.iter('Host'), {"name": "localhost"})
change_node_properties(host_nodes, {"autoDeploy": "false"})
# A.新建节点
a = create_node("Context", {"path": "","docBase":"yunmas_biz","reloadable":"true"}, "")
# B.插入到父节点之下
add_child_node(host_nodes, a)
# 6. 输出到结果文件
write_xml(tree, "./out.xml")
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