Question

java如何把txt文件转换成xml文件

是非结构化的文本：像这样： 知识元知识元是不可再分割的具有完备知识表达的知识单位；知识元是完备的，即一个知识元在逻辑上是完整的，能表达一个完整的事实、原理、方法、技巧等；众多的知识元通过一定的语义连接在一起，可以导致知识价值的增值，甚至是催生新的知识。通过知识元的链接和发掘各知识元的相关联系，是知识元服务的重要手段和目的，以此来揭示知识元之间的各种关联，得以创造新的知识。

Answer 1

txt文件格式如下，采用的是一个服务端tomcat的log日志
[06/Mar/2013:18:43:55] 110.110.1.1 GET /rest/keyword/getallids/aid/3/os/android2.3.5/ver/1.0/ HTTP/1.1 200 210 1453 1.453 'Dalvik/1.4.0 (Linux; U; Android 2.3.5; T550 Build/MocorDroid2.3.5)'[06/Mar/2013:18:43:55] 110.110.1.1 GET /rest/keyword/getallids/aid/3/os/android2.3.4/ver/1.0/ HTTP/1.1 200 210 1453 1.453 'Dalvik/1.4.0 (Linux; U; Android 2.3.4; LG-E730 Build/GRJ22)'[06/Mar/2013:18:43:55] 110.110.1.1 GET /rest/keyword/getallids/aid/3/os/android2.3.5/ver/1.0/ HTTP/1.1 200 210 1453 1.453 'Dalvik/1.4.0 (Linux; U; Android 2.3.5; MI-ONE Plus Build/GINGERBREAD)'[06/Mar/2013:18:43:55] 110.110.1.1 GET /rest/keyword/getallids/aid/3/os/android2.3.6/ver/1.0/ HTTP/1.1 200 210 1453 1.453 'Dalvik/1.4.0 (Linux; U; Android 2.3.6; GT-I9220 Build/GINGERBREAD)'[06/Mar/2013:18:43:55] 110.110.1.1 POST /rest/keyword/getallids/aid/3/os/android4.0.3/ver/1.0/ HTTP/1.1 200 210 1469 1.469 'Dalvik/1.6.0 (Linux; U; Android 4.0.3; HUAWEI C8812 Build/HuaweiC8812)'[06/Mar/2013:18:43:55] 110.110.1.1 GET /rest/keyword/getallids/aid/3/os/android2.2.2/ver/1.0/ HTTP/1.1 200 210 1453 1.453 'Dalvik/1.2.0 (Linux; U; Android 2.2.2; HUAWEI T8300 Build/FRF91)'[06/Mar/2013:18:43:55] 110.110.1.1 GET /rest/keyword/getallids/aid/3/os/android2.3.6/ver/1.0/ HTTP/1.0 200 210 1484 1.484 'Dalvik/1.4.0 (Linux; U; Android 2.3.6; Mytel Build/GRK39F)'[06/Mar/2013:18:43:55] 110.110.1.1 POST /rest/keyword/getallids/aid/3/os/android4.1.1/ver/1.0/ HTTP/1.1 200 210 1406 1.406 'Dalvik/1.6.0 (Linux; U; Android 4.1.1; GT-N7100 Build/JRO03C)'转换代码如下
package test;import java.io.BufferedReader;import java.io.File;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import java.io.Writer;import org.dom4j.Document;import org.dom4j.DocumentHelper;import org.dom4j.Element;import org.dom4j.io.XMLWriter;public class promble04 { @SuppressWarnings("resource") public static void txtToXML(String txtPath) throws IOException { File file = new File(txtPath); Document document = DocumentHelper.createDocument(); Element list = document.addElement("list"); BufferedReader br = new BufferedReader(new FileReader(file)); String line = br.readLine(); while(line!=null) { String temp[] = line.split(" "); Element log = list.addElement("log"); Element time = log.addElement("time"); Element ip = log.addElement("ip"); Element httpType = log.addElement("httpType"); Element url = log.addElement("url"); Element httplevel = log.addElement("httplevel"); Element linuxVersion = log.addElement("linuxVersion"); Element os = log.addElement("os"); Element AndroidVersion = log.addElement("AndroidVersion"); Element phoneType = log.addElement("phoneType"); for(int i = 0;i<temp.length;i++) { time.setText(temp[0]); ip.setText(temp[1]); httpType.setText(temp[2]); url.setText(temp[3]); httplevel.setText(temp[4]); linuxVersion.setText(temp[9]); os.setText(temp[10]); AndroidVersion.setText(temp[12]); phoneType.setText(temp[13]); } line = br.readLine(); } Writer filewriter = new FileWriter("D:\\log\\test.xml"); XMLWriter xmlWriter = new XMLWriter(filewriter); xmlWriter.write(document); xmlWriter.close(); } public static void main(String args[]) throws IOException { promble04.txtToXML("D:\\log\\test.txt"); }}转换结果如下
<?xml version="1.0" encoding="UTF-8"?><list> <log> <time>[06/Mar/2013:18:43:55]</time> <ip>110.110.1.1</ip> <httpType>GET</httpType> <url>/rest/keyword/getallids/aid/3/os/android2.3.5/ver/1.0/</url> <httplevel>HTTP/1.1</httplevel> <linuxVersion>'Dalvik/1.4.0</linuxVersion> <os>(Linux;</os> <AndroidVersion>Android</AndroidVersion> <phoneType>2.3.5;</phoneType> </log> <log> <time>[06/Mar/2013:18:43:55]</time> <ip>110.110.1.1</ip> <httpType>GET</httpType> <url>/rest/keyword/getallids/aid/3/os/android2.3.4/ver/1.0/</url> <httplevel>HTTP/1.1</httplevel> <linuxVersion>'Dalvik/1.4.0</linuxVersion> <os>(Linux;</os> <AndroidVersion>Android</AndroidVersion> <phoneType>2.3.4;</phoneType> </log> <log> <time>[06/Mar/2013:18:43:55]</time> <ip>110.110.1.1</ip> <httpType>GET</httpType> <url>/rest/keyword/getallids/aid/3/os/android2.3.5/ver/1.0/</url> <httplevel>HTTP/1.1</httplevel> <linuxVersion>'Dalvik/1.4.0</linuxVersion> <os>(Linux;</os> <AndroidVersion>Android</AndroidVersion> <phoneType>2.3.5;</phoneType> </log> <log> <time>[06/Mar/2013:18:43:55]</time> <ip>110.110.1.1</ip> <httpType>GET</httpType> <url>/rest/keyword/getallids/aid/3/os/android2.3.6/ver/1.0/</url> <httplevel>HTTP/1.1</httplevel> <linuxVersion>'Dalvik/1.4.0</linuxVersion> <os>(Linux;</os> <AndroidVersion>Android</AndroidVersion> <phoneType>2.3.6;</phoneType> </log> <log> <time>[06/Mar/2013:18:43:55]</time> <ip>110.110.1.1</ip> <httpType>POST</httpType> <url>/rest/keyword/getallids/aid/3/os/android4.0.3/ver/1.0/</url> <httplevel>HTTP/1.1</httplevel> <linuxVersion>'Dalvik/1.6.0</linuxVersion> <os>(Linux;</os> <AndroidVersion>Android</AndroidVersion> <phoneType>4.0.3;</phoneType> </log> <log> <time>[06/Mar/2013:18:43:55]</time> <ip>110.110.1.1</ip> <httpType>GET</httpType> <url>/rest/keyword/getallids/aid/3/os/android2.2.2/ver/1.0/</url> <httplevel>HTTP/1.1</httplevel> <linuxVersion>'Dalvik/1.2.0</linuxVersion> <os>(Linux;</os> <AndroidVersion>Android</AndroidVersion> <phoneType>2.2.2;</phoneType> </log> <log> <time>[06/Mar/2013:18:43:55]</time> <ip>110.110.1.1</ip> <httpType>GET</httpType> <url>/rest/keyword/getallids/aid/3/os/android2.3.6/ver/1.0/</url> <httplevel>HTTP/1.0</httplevel> <linuxVersion>'Dalvik/1.4.0</linuxVersion> <os>(Linux;</os> <AndroidVersion>Android</AndroidVersion> <phoneType>2.3.6;</phoneType> </log> <log> <time>[06/Mar/2013:18:43:55]</time> <ip>110.110.1.1</ip> <httpType>POST</httpType> <url>/rest/keyword/getallids/aid/3/os/android4.1.1/ver/1.0/</url> <httplevel>HTTP/1.1</httplevel> <linuxVersion>'Dalvik/1.6.0</linuxVersion> <os>(Linux;</os> <AndroidVersion>Android</AndroidVersion> <phoneType>4.1.1;</phoneType> </log></list>
求采纳为满意回答。

Answer 2

我就给你说一下思路吧！

首先要获取文本内容，然后分割文本内容成一个个字符串，最后利用DOM操作创建节点，将文本内容一个一个存进去，形成XML文档。

Answer 3

把txt文件内容读出来，重新写入xml文件

追问

以什么方式去读？写入到xml文件时，节点怎么加进去？

追答

要看你txt文件的内容格式，如果txt文件里有xml标签，那么直接用流读取写入，如果没有xml标签，那么需要用流读取，把流转化为字符串，解析字符串，然后用dom写入到xml文件中