Java正则表达式简单应用 -

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Java正则表达式简单应用

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java
正则表达式

Java 正则表达式

最近采用redbend的dm库进行DM方面的开发工作。库过程在ddms里面打印出类似于以下的log， DM报文难以区分(蓝色部分)，不便于分析。于是用正则式从log中提取DM报文内容。

11-22 09:23:41.034: INFO/vDM (vdm)(4438): dm\sess\sess_setup.c.600: Replace command coding result 0x0

11-22 09:23:41.044: INFO/vDM (vdm)(4438): dm\sess\sess_utils.c.857: metaToPcdata format='int'

11-22 09:23:41.044: INFO/vDM (vdm)(4438): dm\sess\sess_utils.c.864: metaToPcdata type='org.openmobilealliance.dm.firmwareupdate.userrequest'

11-22 09:23:41.054: INFO/vDM (vdm)(4438): dm\sess\sess_utils.c.871: metaToPcdata mark='indeterminate'

11-22 09:23:41.054: INFO/vDM (vdm)(4438): rdm\sess\sess_prot.c.86: ---------- Command 3 ALERT(1226)

11-22 09:23:41.054: INFO/vDM (vdm)(4438): dm\sess\sess_setup.c.676: FUMO notification alert command coding result 0x0

11-22 09:23:41.064: INFO/vDM (vdm)(4438): dm\sess\sess_setup.c.1317: SESS_setupSession() <<< send message

11-22 09:23:41.064: INFO/vDM (vdm)(4438): dm\sess\sess_comms.c.549: -------------------- Send message

11-22 09:23:41.074: INFO/vDM (vdm)(4438): dm\sess\sess_comms.c.559: Data to write out...

11-22 09:23:41.074: INFO/vDM (vdm)(4438): 0000 3C 3F 78 6D 6C 20 76 65 72 73 69 6F 6E 3D 22 31 <?xml version="1

11-22 09:23:41.094: INFO/vDM (vdm)(4438): <?xml version="1

11-22 09:23:41.094: INFO/vDM (vdm)(4438): 0010 2E 30 22 20 65 6E 63 6F 64 69 6E 67 3D 22 55 54 .0" encoding="UT

11-22 09:23:41.094: INFO/vDM (vdm)(4438): .0" encoding="UT

11-22 09:23:41.094: INFO/vDM (vdm)(4438): 0020 46 2D 38 22 3F 3E 3C 53 79 6E 63 4D 4C 20 78 6D F-8"?><SyncML xm

11-22 09:23:41.094: INFO/vDM (vdm)(4438): F-8"?><SyncML xm

11-22 09:23:41.094: INFO/vDM (vdm)(4438): 0030 6C 6E 73 3D 27 53 59 4E 43 4D 4C 3A 53 59 4E 43 lns='SYNCML:SYNC

11-22 09:23:41.104: INFO/vDM (vdm)(4438): lns='SYNCML:SYNC

11-22 09:23:41.104: INFO/vDM (vdm)(4438): 0040 4D 4C 31 2E 32 27 3E 3C 53 79 6E 63 48 64 72 3E ML1.2'><SyncHdr>

11-22 09:23:41.104: INFO/vDM (vdm)(4438): ML1.2'><SyncHdr>

11-22 09:23:41.114: INFO/vDM (vdm)(4438): 0050 3C 56 65 72 44 54 44 3E 3C 21 5B 43 44 41 54 41 <VerDTD><![CDATA

11-22 09:23:41.114: INFO/vDM (vdm)(4438): <VerDTD><![CDATA

11-22 09:23:41.124: INFO/vDM (vdm)(4438): 0060 5B 31 2E 32 5D 5D 3E 3C 2F 56 65 72 44 54 44 3E [1.2]]></VerDTD>

11-22 09:23:41.124: INFO/vDM (vdm)(4438): [1.2]]></VerDTD>

11-22 09:23:41.134: INFO/vDM (vdm)(4438): 0070 3C 56 65 72 50 72 6F 74 6F 3E 3C 21 5B 43 44 41 <VerProto><![CDA

11-22 09:23:41.134: INFO/vDM (vdm)(4438): <VerProto><![CDA

11-22 09:23:41.134: INFO/vDM (vdm)(4438): 0080 54 41 5B 44 4D 2F 31 2E 32 5D 5D 3E 3C 2F 56 65 TA[DM/1.2]]></Ve

11-22 09:23:41.144: INFO/vDM (vdm)(4438): TA[DM/1.2]]></Ve

11-22 09:23:41.154: INFO/vDM (vdm)(4438): 0090 72 50 72 6F 74 6F 3E 3C 53 65 73 73 69 6F 6E 49 rProto><SessionI

11-22 09:23:41.154: INFO/vDM (vdm)(4438): rProto><SessionI

11-22 09:23:41.154: INFO/vDM (vdm)(4438): 00A0 44 3E 3C 21 5B 43 44 41 54 41 5B 35 42 5D 5D 3E D><![CDATA[5B]]>

11-22 09:23:41.164: INFO/vDM (vdm)(4438): D><![CDATA[5B]]>

11-22 09:23:41.164: INFO/vDM (vdm)(4438): 00B0 3C 2F 53 65 73 73 69 6F 6E 49 44 3E 3C 4D 73 67 </SessionID><Msg

11-22 09:23:41.164: INFO/vDM (vdm)(4438): </SessionID><Msg

11-22 09:23:41.174: INFO/vDM (vdm)(4438): 00C0 49 44 3E 3C 21 5B 43 44 41 54 41 5B 31 5D 5D 3E ID><![CDATA[1]]>

11-22 09:23:41.174: INFO/vDM (vdm)(4438): ID><![CDATA[1]]>

11-22 09:23:41.194: INFO/vDM (vdm)(4438): 00D0 3C 2F 4D 73 67 49 44 3E 3C 54 61 72 67 65 74 3E </MsgID><Target>

11-22 09:23:41.194: INFO/vDM (vdm)(4438): </MsgID><Target>

11-22 09:23:41.194: INFO/vDM (vdm)(4438): 00E0 3C 4C 6F 63 55 52 49 3E 3C 21 5B 43 44 41 54 41 <LocURI><![CDATA

11-22 09:23:41.194: INFO/vDM (vdm)(4438): <LocURI><![CDATA

11-22 09:23:41.194: INFO/vDM (vdm)(4438): 00F0 5B 68 74 74 70 3A 2F 2F 32 31 30 2E 32 31 2E 32 [http://210.21.2

11-22 09:23:41.204: INFO/vDM (vdm)(4438): [http://210.21.2

11-22 09:23:41.204: INFO/vDM (vdm)(4438): 0100 33 36 2E 31 38 32 2F 7A 78 6D 64 6D 70 2F 64 6D 36.182/zxmdmp/dm

11-22 09:23:41.214: INFO/vDM (vdm)(4438): 36.182/zxmdmp/dm

11-22 09:23:41.214: INFO/vDM (vdm)(4438): 0110 5D 5D 3E 3C 2F 4C 6F 63 55 52 49 3E 3C 2F 54 61 ]]></LocURI></Ta

11-22 09:23:41.214: INFO/vDM (vdm)(4438): ]]></LocURI></Ta

11-22 09:23:41.224: INFO/vDM (vdm)(4438): 0120 72 67 65 74 3E 3C 53 6F 75 72 63 65 3E 3C 4C 6F rget><Source><Lo

11-22 09:23:41.224: INFO/vDM (vdm)(4438): rget><Source><Lo

11-22 09:23:41.234: INFO/vDM (vdm)(4438): 0130 63 55 52 49 3E 3C 21 5B 43 44 41 54 41 5B 49 4D cURI><![CDATA[IM

11-22 09:23:41.234: INFO/vDM (vdm)(4438): cURI><![CDATA[IM

11-22 09:23:41.244: INFO/vDM (vdm)(4438): 0140 45 49 3A 30 30 30 34 33 39 34 38 35 36 34 32 39 EI:0004394856429

11-22 09:23:41.244: INFO/vDM (vdm)(4438): EI:0004394856429

11-22 09:23:41.244: INFO/vDM (vdm)(4438): 0150 39 39 5D 5D 3E 3C 2F 4C 6F 63 55 52 49 3E 3C 2F 99]]></LocURI></

11-22 09:23:41.254: INFO/vDM (vdm)(4438): 99]]></LocURI></

11-22 09:23:41.254: INFO/vDM (vdm)(4438): 0160 53 6F 75 72 63 65 3E 3C 4D 65 74 61 3E 3C 4D 61 Source><Meta><Ma

11-22 09:23:41.254: INFO/vDM (vdm)(4438): Source><Meta><Ma

11-22 09:23:41.264: INFO/vDM (vdm)(4438): 0170 78 4D 73 67 53 69 7A 65 20 78 6D 6C 6E 73 3D 27 xMsgSize xmlns='

11-22 09:23:41.264: INFO/vDM (vdm)(4438): xMsgSize xmlns='

11-22 09:23:41.274: INFO/vDM (vdm)(4438): 0180 73 79 6E 63 6D 6C 3A 6D 65 74 69 6E 66 27 3E 3C syncml:metinf'><

11-22 09:23:41.274: INFO/vDM (vdm)(4438): syncml:metinf'><

11-22 09:23:41.274: INFO/vDM (vdm)(4438): 0190 21 5B 43 44 41 54 41 5B 33 30 30 30 5D 5D 3E 3C ![CDATA[3000]]><

11-22 09:23:41.294: INFO/vDM (vdm)(4438): ![CDATA[3000]]><

11-22 09:23:41.294: INFO/vDM (vdm)(4438): 01A0 2F 4D 61 78 4D 73 67 53 69 7A 65 3E 3C 4D 61 78 /MaxMsgSize><Max

11-22 09:23:41.294: INFO/vDM (vdm)(4438): /MaxMsgSize><Max

11-22 09:23:41.294: INFO/vDM (vdm)(4438): 01B0 4F 62 6A 53 69 7A 65 20 78 6D 6C 6E 73 3D 27 73 ObjSize xmlns='s

11-22 09:23:41.294: INFO/vDM (vdm)(4438): ObjSize xmlns='s

11-22 09:23:41.294: INFO/vDM (vdm)(4438): 01C0 79 6E 63 6D 6C 3A 6D 65 74 69 6E 66 27 3E 3C 21 yncml:metinf'><!

11-22 09:23:41.304: INFO/vDM (vdm)(4438): yncml:metinf'><!

11-22 09:23:41.304: INFO/vDM (vdm)(4438): 01D0 5B 43 44 41 54 41 5B 31 30 30 30 30 30 5D 5D 3E [CDATA[100000]]>

11-22 09:23:41.314: INFO/vDM (vdm)(4438): [CDATA[100000]]>

11-22 09:23:41.314: INFO/vDM (vdm)(4438): 01E0 3C 2F 4D 61 78 4F 62 6A 53 69 7A 65 3E 3C 2F 4D </MaxObjSize></M

11-22 09:23:41.314: INFO/vDM (vdm)(4438): </MaxObjSize></M

11-22 09:23:41.324: VERBOSE/ELWidget(2705): goNext

11-22 09:23:41.324: VERBOSE/ELWidget(2705): setPos index=17

11-22 09:23:41.324: INFO/vDM (vdm)(4438): 01F0 65 74 61 3E 3C 2F 53 79 6E 63 48 64 72 3E 3C 53 eta></SyncHdr><S

11-22 09:23:41.334: INFO/vDM (vdm)(4438): eta></SyncHdr><S

11-22 09:23:41.354: INFO/vDM (vdm)(4438): 0200 79 6E 63 42 6F 64 79 3E 3C 41 6C 65 72 74 3E 3C yncBody><Alert><

11-22 09:23:41.354: INFO/vDM (vdm)(4438): yncBody><Alert><

11-22 09:23:41.364: INFO/vDM (vdm)(4438): 0210 43 6D 64 49 44 3E 3C 21 5B 43 44 41 54 41 5B 31 CmdID><![CDATA[1

11-22 09:23:41.364: INFO/vDM (vdm)(4438): CmdID><![CDATA[1

思路很简单，出现报文的位置都有一个规律，先是一串16进制数，然后是这一串16进制数对应的字符串(报文内容)。根据这个规律，得到以下正则式：

.*[[A-F][0-9]]{4}\\s{2}([[A-F][0-9]]{2}\\s{1}){1,16}(.*)

对比log中的规律，首先是任意个字符，紧接着出现一个四位的16进制数，接下来有两个空格，然后出现两位的16进制数，空格，两位的16进制数，空格， ...(最多16次，最少1次)，最后是任意字符。我们希望提取出来的是这最后的任意字符。代码如下。

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

public class ParseVdmLog {

public static final int beginIndex = 46;

public static final int beginIndex2 = 96;

public static final String endString = "/SyncML>.";

/**

* @param args

* @throws FileNotFoundException

public static void main(String[] args) throws FileNotFoundException {

if (false) {

System.out.println("args.length = " + args.length);

for (String string : args) {

System.out.println(string);

}

if (1 != args.length) {

System.err.println("usage: java com.xxx.cm.ParseVdmLog srcfile destfile");

System.exit(-1);

}

String srcFile = "";

String destFile = "";

if (false) {

srcFile = "c:\\1.txt";

destFile = srcFile.replace(".txt", ".xml");

} else {

srcFile = args[0];

//destFile = args[1];

if (srcFile.startsWith("\"")) {

srcFile = srcFile.substring(1, srcFile.length() - 1);

}

destFile = srcFile.replace(".txt", ".xml");

}

BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(srcFile)));

BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(destFile)));

String line = null;

try {

while (null != (line = br.readLine())) {

if (line.contains("Data read in")) {

processStrings(br, bw, true);

//break;

} else if (line.contains("Data to write out")) {

processStrings(br, bw, false);

}

} catch (IOException e) {

e.printStackTrace();

}

try {

br.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

try {

bw.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

private static void processStrings(BufferedReader in, BufferedWriter out, boolean readIn) throws IOException {

/* String line = null;

String targetStr = "";

// 读取到的第一行为"0000 3C 3F 78 6D 6C 20 76 65 72 73 69 6F 6E 3D 22 31 <?xml version="1"

// 略过该行

while (null != (line = in.readLine()) && null != (line = in.readLine())) {

targetStr = line.substring(beginIndex).trim();

out.append(targetStr);

if (targetStr.equalsIgnoreCase(endString)) {

break ;

}

out.append("\r\n");

out.flush();

System.out.println("finish processReadIn()");*/

addComment(out, readIn);

String line2 = null;

String targetStr2 = "";

String patterns = ".*[[A-F][0-9]]{4}\\s{2}([[A-F][0-9]]{2}\\s{1}){1,16}(.*)";

Pattern reg = Pattern.compile(patterns);

while (null != (line2 = in.readLine())) {

Matcher m = reg.matcher(line2);

if (m.matches()) {

//System.out.println(line2);

//break;

//System.out.println(line2.substring(beginIndex2));

//targetStr2 = line2.substring(beginIndex2);

//.*[[A-F][0-9]]{4}\\s{2}([[A-F][0-9]]{2}\\s{1}){1,16}(.*)

// 提取组2中的子串，即"最后的任意字符串"

targetStr2 = m.group(2);

//System.out.println(m.group(2));

out.append(targetStr2.trim());

if (line2.contains(endString)) {

// 遇到结尾

addComment(out, readIn);

}

out.newLine();

out.flush();

}

private static void addComment(BufferedWriter out, boolean readIn) throws IOException {

out.newLine();

if (readIn) {

out.append("");

} else {

out.append("");

}

out.newLine();

}

代码从保存在txt文件中的ddms log中提取目标内容(DM报文)，最后将内容保存在一个同名的xml文件中。用eclipse格式化该xml文件，最终得到整齐、容易阅读的DM报文。

<?xml version="1.0" encoding="UTF-8"?>

</Target>

</Source>

<Meta>

</Meta>

</SyncHdr>

<Alert>

</Alert>

<Item>

</Source>

<Meta>

</Meta>

</Item>

<Item>

</Source>

<Meta>

</Meta>

</Item>

<Item>

</Source>

<Meta>

</Meta>

</Item>

<Item>

</Source>

<Meta>

</Meta>

</Item>

<Item>

</Source>

<Meta>

</Meta>

</Item>

</Replace>

<Alert>

<Item>

<Meta>

</Meta>

</Item>

</Alert>

</SyncBody>

</SyncML>

程序不复杂，不过解决了开发中遇到的问题。权当一个Java正则表达式的小练习。

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Android进程和线程

2011-11-23 22:24
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