利用dom4j解析xml

引言

最近有個項目需要解析xml 文件，獲取其中的節點內容， 小編選擇了一個編碼簡單又高效的dom4j來完成。

1、xml內容

<?xml version="1.0" encoding="UTF-8"?>
<RecognizeResult>
    <Speech Uri="/Sub/2019-12-03.3/file/5149-15892322607-20191202141010-rJKTcXfpB_datang.wav" Duration="252840">
        <ResultCode>0</ResultCode>
        <Confidence>100</Confidence>
        <Subject Name="RecognizeText">
            <Role Name="R0">
                <EndPoint Count="44">
                    <Item Begin="13340" End="13450">
                        <Text>喂。 </Text>
                        <Time>13340,13450 </Time>
                    </Item>
                    <Item Begin="15860" End="16240">
                        <Text>喂。 </Text>
                        <Time>15860,16240 </Time>
                    </Item>
                   
                </EndPoint>
            </Role>
            <Role Name="R1">
                <EndPoint Count="35">
                    <Item Begin="17990" End="20080">
                        <Text>哎 喂 是 王 斌 先生 是嗎 啊！ </Text>
                        <Time>17990,18100 18100,18340 18340,18550 18550,18940 18940,19120 19120,19510 19510,19820 19860,20080 </Time>
                    </Item>
                    <Item Begin="20630" End="21190">
                        <Text>對 是啊！ </Text>
                        <Time>20630,20860 20860,21190 </Time>
                    </Item>
                    
                </EndPoint>
            </Role>
        </Subject>
    </Speech>
</RecognizeResult>

需求是，將其中的漢子分角色（R0,R1）解析出來，並且拼接成字符串，然後發送給消息隊列。

2、引入jar包

  <dependency>
         <groupId>dom4j</groupId>
         <artifactId>dom4j</artifactId>
         <version>1.6.1</version>
     </dependency>

 

3、代碼實現

package com.zqf.zj.zhijian.service;

import com.zqf.common.utils.DateUtils;
import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import java.io.File;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @author zhenghao
 * @description: 解析xml
 * @date 2019/12/318:33
 */
@Service
public class ParseXmlService {

    private static Logger log = LoggerFactory.getLogger(ParseXmlService.class);

    @Value("${base.file.path}")
    private String baseFilePath;

    //獲得文件 測試方法
    public void xmlFile() {
        //String toDayStartYMD = DateUtils.getToDayStartYMD();
        String date = "2019-12";
        for (int j = 1; j <= 4; j++) {
            String toDayStartYMD = date + "-0" + j;
            for (int i = 0; i < 24; i++) {
                String filePath = baseFilePath + toDayStartYMD + "." + i + "/file/";
                log.info("文件路徑" + filePath);
                parseXml(filePath);
            }
        }

    }

    public void parseXml(String strFile) {
        try {
            long l = System.currentTimeMillis();
            List<String> R0List = new ArrayList<>();
            List<String> R1List = new ArrayList<>();
            File file = new File(strFile);
            String[] filePath = file.list();
            if (filePath == null || filePath.length <= 0) {
                return;
            }
            log.info("xml個數" + filePath.length);
            for (String s : filePath) {
                if (!s.contains(".xml")) {
                    continue;
                }
                String tempFilePath = strFile + s;
                //1.創建Reader對象
                SAXReader reader = new SAXReader();
                //2.加載xml
                Document document = reader.read(new File(tempFilePath));
                //3.獲取根節點
                Element rootElement = document.getRootElement();
                StringBuilder sb = new StringBuilder();
                //4、獲得指定子節點
                Element speechElement = rootElement.element("Speech");
                //5、獲得節點屬性
                Attribute duration = speechElement.attribute("Duration");
                String value = duration.getValue();
                int telLength = Integer.valueOf(value) / 1000;
                if (telLength <= 45) {
                    continue;
                }
                //默認返回第一節點
                Element subjectElement = speechElement.element("Subject");
                if (subjectElement == null) {
                    continue;
                }
                Iterator iterator3 = subjectElement.elementIterator();
                while (iterator3.hasNext()) {

                    Element roleElement = (Element) iterator3.next();
                    Attribute name = roleElement.attribute("Name");
                    Element endPointElement = roleElement.element("EndPoint");
                    //獲得所有子節點
                    Iterator iterator1 = endPointElement.elementIterator();
                    while (iterator1.hasNext()) {
                        Element itemElement = (Element) iterator1.next();
                        Element textElement = itemElement.element("Text");
                        String stringValue = textElement.getStringValue();
                        if (name.getValue().equals("R0")) {
                            sb.append(stringValue);
                            R0List.add(stringValue);
                        } else {
                            R1List.add(stringValue);
                        }
                    }
                }

               
            }
            System.out.println(System.currentTimeMillis() - l);
        } catch (DocumentException e) {
            e.printStackTrace();
        }
    }

4、多種解析xml方式對比，請參考下面文章

https://blog.csdn.net/hao134838/article/details/103402694