# !/usr/bin/env python
# -*- coding: utf-8 -*-
# author:Rache
# date:2020/3/19 22:02
# desc: Tomcat組件配置初始化,適用版本 apache-tomcat-9.0.33
from xml.etree.ElementTree import ElementTree, Element
def read_xml(in_path):
'''讀取並解析xml文件
in_path: xml路徑
return: ElementTree'''
tree = ElementTree()
tree.parse(in_path)
return tree
def write_xml(tree, out_path):
'''將xml文件寫出
tree: xml樹
out_path: 寫出路徑'''
tree.write(out_path, encoding="utf-8", xml_declaration=True)
def if_match(node, kv_map):
'''判斷某個節點是否包含所有傳入參數屬性
node: 節點
kv_map: 屬性及屬性值組成的map'''
for key in kv_map:
if node.get(key) != kv_map.get(key):
return False
return True
# ---------------search -----
def find_nodes(tree, path):
'''查找某個路徑匹配的所有節點
tree: xml樹
path: 節點路徑'''
return tree.findall(path)
def get_node_by_keyvalue(nodelist, kv_map):
'''根據屬性及屬性值定位符合的節點,返回節點
nodelist: 節點列表
kv_map: 匹配屬性及屬性值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 /刪除 節點的屬性及屬性值
nodelist: 節點列表
kv_map:屬性及屬性值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):
'''改變/增加/刪除一個節點的文本
nodelist:節點列表
text : 更新後的文本'''
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):
'''新造一個節點
tag:節點標籤
property_map:屬性及屬性值map
content: 節點閉合標籤裏的文本內容
return 新節點'''
element = Element(tag, property_map)
element.text = content
return element
def add_child_node(nodelist, element):
'''給一個節點添加子節點
nodelist: 節點列表
element: 子節點'''
for node in nodelist:
node.append(element)
def del_node_by_tagkeyvalue(nodelist, tag, kv_map):
'''同過屬性及屬性值定位一個節點,並刪除之
nodelist: 父節點列表
tag:子節點標籤
kv_map: 屬性及屬性值列表'''
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. 讀取xml文件
tree = read_xml("./server.xml")
# 2.遍歷節點測試:
root_node=tree.getroot()
# print("根節點:"+root_node.tag)
# print("根節點屬性:",root_node.attrib)
#
# for child_node in root_node.iter('Service'):
# print(child_node.tag,child_node.attrib)
# 3.Server節點修改
server_nodes = get_node_by_keyvalue(find_nodes(tree, "Server"), {"shutdown": "SHUTDOWN"})
change_node_properties(server_nodes, {"port": "8010"}) # shutdown 默認端口8005改爲8010
# 3.Connector節點修改,增加些屬性
# A. 找到父節點
root_node = tree.getroot()
for node in root_node.iter('Connector'):
# 節點的標籤名稱和內容
print(node.tag, node.attrib)
# B. 通過屬性準確定位子節點
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節點修改,關閉熱部署,增加默認項目路徑
host_nodes = get_node_by_keyvalue(root_node.iter('Host'), {"name": "localhost"})
change_node_properties(host_nodes, {"autoDeploy": "false"})
# A.新建節點
a = create_node("Context", {"path": "","docBase":"yunmas_biz","reloadable":"true"}, "")
# B.插入到父節點之下
add_child_node(host_nodes, a)
# 6. 輸出到結果文件
write_xml(tree, "./out.xml")
Python配置XML配置文件
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