python自动更新pom文件的方法

# 该脚本主要用来升级发包期间修改各服务版本
FILEPATH=$1
GROUPID=$2
ARTIFACTID=$3
FILENAME=$4
while getopts ":f:g:a:" opt
do
    case $opt in
        f)
        FILENAME=$OPTARG
        echo "您输入的文件配置:$FILENAME"
        ;;
        g)
        GROUPID=$OPTARG
        echo "您输入的groupid配置:$GROUPID"
        ;;
        a)
        ARTIFACTID=$OPTARG
        echo "您输入的artifactid配置:$ARTIFACTID"
        ;;
        ff)
        FILENAME=$OPTARG
        echo "您输入的带修改文件为:$FILENAME"
        ;;
        ?)
        echo "未知参数"
        exit 1;;
    esac
done
echo "开始修改版本号"
NEWCONTENT=1.2.5.$(date +%Y%m%d)
LINE=`cat ${FILENAME} | grep -n -A 1 '<groupId>'"${GROUPID}"'<\/groupId>'| grep -n '<artifactId>'"${ARTIFACTID}"'<\/artifactId>' | awk -F "[:-]+" '{print $2}'`
echo 具体行号:$LINE
if [[ -z $LINE  ]]
then
    echo 未匹配
    exit
fi
VERSIONOLDCONTENT=`sed -n ''"$((LINE+1))"'p' ${FILENAME}| grep '[0-9a-zA-Z\.-]+' -Eo | sed -n '2p'`
echo ${VERSIONOLDCONTENT}
#gsed -i  ''"$((LINE+1))"'c\'"${NEWCONTENT}"'' pom.xml
sed -i "" ''"$((LINE+1))"'s/'"${VERSIONOLDCONTENT}"'/'"${NEWCONTENT}"'/' ${FILENAME}

### 1.SAX (simple API for XML )
Python 标准库包含 SAX 解析器，SAX 用事件驱动模型，通过在解析XML的过程中触发一个个的事件并调用用户定义的回调函数来处理XML文件。
### 2.DOM(Document Object Model)
将 XML 数据在内存中解析成一个树，通过对树的操作来操作XML。
### 3.ElementTree(元素树)

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.github.zxhTom</groupId>
    <artifactId>bottom</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>bottom</name>
    <url>http://maven.apache.org</url>
    <description>最底层的繁琐封装</description>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <log4j2.version>2.10.0</log4j2.version>
    </properties>

    <dependencies>
        <!-- 20180927提供了针对stirng bean list 等判断的操作。不用我们在详细的判断了 -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.7</version>
        </dependency>
        <!-- 提供了针对list 等判断的操作。不用我们在详细的判断了 -->
        <dependency>
            <groupId>commons-collections</groupId>
            <artifactId>commons-collections</artifactId>
            <version>3.2.1</version>
        </dependency>
        <!-- jsonobeject jar包依赖 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.28</version>
        </dependency>
        <!-- 日志记录 -->
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>${log4j2.version}</version>
        </dependency>
        <!-- 通过反射获取标有注解的类 -->
        <dependency>
            <groupId>org.reflections</groupId>
            <artifactId>reflections</artifactId>
            <version>0.9.10</version>
        </dependency>
    </dependencies>   
</project>

import xml.etree.ElementTree as ET
with open('pom.xml', 'tr', encoding='utf-8') as rf:
    tree = ET.parse(rf)

print(tree)

import xml.etree.ElementTree as ET
with open('pom.xml', 'tr', encoding='utf-8') as rf:
    tree = ET.parse(rf)
# 根据tree进行遍历
for node in tree.iter():
    print(node.tag)

import xml.etree.ElementTree as ET
with open('pom.xml', 'tr', encoding='utf-8') as rf:
    tree = ET.parse(rf)
# tree遍历
for node in tree.findall('.//dependency'):
    print(node.tag)

import xml.etree.ElementTree as ET
with open('pom.xml', 'tr', encoding='utf-8') as rf:
    tree = ET.parse(rf)
# tree遍历
for node in tree.findall('.//{http://maven.apache.org/POM/4.0.0}dependency'):
    print(node.tag)

import xml.etree.ElementTree as ET
with open('pom.xml', 'tr', encoding='utf-8') as rf:
    tree = ET.parse(rf)
# tree遍历
for node in tree.findall('.//{http://maven.apache.org/POM/4.0.0}dependency'):
    groupIdNode=node.find('.{http://maven.apache.org/POM/4.0.0}groupId')
    artifactNode=node.find('.{http://maven.apache.org/POM/4.0.0}artifactId')
    if(artifactNode.text=='fastjson' and groupIdNode.text=='com.alibaba'):
        print(node.find('.{http://maven.apache.org/POM/4.0.0}version').text)

import xml.etree.ElementTree as ET
with open('pom.xml', 'tr', encoding='utf-8') as rf:
    tree = ET.parse(rf)
# tree遍历
for node in tree.findall('.//{http://maven.apache.org/POM/4.0.0}dependency'):
    groupIdNode=node.find('.{http://maven.apache.org/POM/4.0.0}groupId')
    artifactNode=node.find('.{http://maven.apache.org/POM/4.0.0}artifactId')
    if(artifactNode.text=='fastjson' and groupIdNode.text=='com.alibaba'):
        node.find('.{http://maven.apache.org/POM/4.0.0}version').text='1.2.29'
tree.write('pom.xml')

def write(self, file_or_filename,
              encoding=None,
              xml_declaration=None,
              default_namespace=None,
              method=None, *,
              short_empty_elements=True):

tree.write('pom.xml',default_namespace='http://maven.apache.org/POM/4.0.0')

tree.write('pom.xml',default_namespace='http://maven.apache.org/POM/4.0.0',encoding='UTF-8')

with open('pom.xml', 'tr', encoding='utf-8') as rf:
    tree = ET.parse(rf)

class CommentedTreeBuilder (ET.TreeBuilder):
    def comment(self,data):
        self.start(ET.Comment,{})
        self.data(data)
        self.end(ET.Comment)

parser = ET.XMLParser(target=CommentedTreeBuilder())
tree = ET.parse(xml_path,parser=parser)

# tree遍历
for node in tree.findall('.//{http://maven.apache.org/POM/4.0.0}dependency'):
    print(node.tag)

ns = {'real_mvn': 'http://maven.apache.org/POM/4.0.0',
      'vistual': 'http://characters.zxhtom.com'}
# tree遍历
for node in tree.findall('.//real_mvn:dependency',ns):
    print(node.tag)