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**SiteFileFetch.java #h
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package NetFox; E?bv<L,"
import java.io.*; oSf`F1;)HQ
import java.net.*; *PB /I4>{
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public class SiteFileFetch extends Thread { iQT0%WaHl
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SiteInfoBean siteInfoBean = null; //文件信息Bean v&7<f$5
long[] nStartPos; //开始位置 8 4reyA
long[] nEndPos; //结束位置 *:"60fkoU
FileSplitterFetch[] fileSplitterFetch; //子线程对象 e8oAGh"
long nFileLength; //文件长度 f&$;iE
boolean bFirst = true; //是否第一次取文件 4K dYiuz0`
boolean bStop = false; //停止标志 >, 'guaa
File tmpFile; //文件下载的临时信息 Y6hV
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DataOutputStream output; //输出到文件的输出流 }Qe(6'l_
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) + @|u8+
public SiteFileFetch(SiteInfoBean bean) throws IOException W/ WP }QM
{ !Fxn1Z,
siteInfoBean = bean; +]NpcE'
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); W&D{0 i`y
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); #R31VQwK5
if(tmpFile.exists ()) % WXl*
{ S1@r.z2L
bFirst = false; ,aBy1K
read_nPos(); r&+C%
} 9(}d7y
else M8 \/[R\
{ v@8SMOe%
nStartPos = new long[bean.getNSplitter()]; 8'bZR]
nEndPos = new long[bean.getNSplitter()]; 9IrCu?n9b
} Mqk|H~l5c
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public void run() 9=/4}!.
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//获得文件长度 cXf/
//分割文件 '+j;g
//实例FileSplitterFetch llh
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//启动FileSplitterFetch线程 |M
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//等待子线程返回 uTPAf^|
try{ :pz@'J
if(bFirst) i O? f&u
{ `,/5skeJ
nFileLength = getFileSize(); ?$tD
if(nFileLength == -1) L]"$dF
{ b\o>4T
System.err.println("File Length is not known!"); 3XQe? 2:<
} 5 $$Cav
else if(nFileLength == -2) X%JyC_~<
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System.err.println("File is not access!"); AcH!KbYf
} I*(kv7(c0
else n_ ?+QF
{ ,O-_Pv
for(int i=0;i<nStartPos.length;i++) Rbr:Q]zGN
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); m^m=/'<+
} *icaKy3
for(int i=0;i<nEndPos.length-1;i++) n+Conp/
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nEndPos = nStartPos[i+1]; x5pu+-h
} F$1{w"&
nEndPos[nEndPos.length-1] = nFileLength; a_{'I6a*,
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//启动子线程 KSEKoHJo
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; )D'#>!Y
for(int i=0;i<nStartPos.length;i++) be]/ROP>H
{ 3&{6+ A
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), sKR%YK
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), F s=x+8'M
nStartPos,nEndPos,i); vkR~nIp
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !Y7$cU &
fileSplitterFetch.start(); y!R9)=/M
} qxHn+O!h
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), fl9VokAT
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); _?'W30Dg
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ;pOV; q3j
nEndPos = " + nFileLength); "*l{ m2"
// fileSplitterFetch[nPos.length-1].start(); v3t<rv
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//等待子线程结束 eLXL5&}`fh
//int count = 0; OkISRj'!U
//是否结束while循环 (f_J @n
boolean breakWhile = false; T<Qa`|5>
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while(!bStop) dV'^K%#
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write_nPos(); /?XI,#j3kM
Utility.sleep(500); \Zx&J.D
breakWhile = true; EL z5P}L6
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for(int i=0;i<nStartPos.length;i++) s?->2gxhx
{ Y+vIU*O
if(!fileSplitterFetch.bDownOver) S# baOO
{ i`];xNR'
breakWhile = false; O<,\tZ'N
break; BBV>QL
} w,R6:*p5
} F9%+7Op^
if(breakWhile) &OXx\}>MW
break; zzo93d
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//count++; W7_m,{q
//if(count>4) VnB HQ.C
// siteStop(); ;XjXv'
} _!Tjb^
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System.err.println("文件下载结束!"); a&)!zhVP
} gE=9K @
catch(Exception e){e.printStackTrace ();} 8==M{M/eM
} k W
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//获得文件长度 ru`U/6n
public long getFileSize() 4/mz>eK"
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int nFileLength = -1; cwtlOg
try{ (0`w.n
URL url = new URL(siteInfoBean.getSSiteURL()); B|$o.$5
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); vRf$#fBEQ
httpConnection.setRequestProperty("User-Agent","NetFox"); 7w8UnPuM
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int responseCode=httpConnection.getResponseCode(); D2gyn-]\
if(responseCode>=400) um_J%v6ER
{ y3QS!3I
processErrorCode(responseCode); *f>\X[wN
return -2; //-2 represent access is error Jq? zr]"A
} a'Zw^g
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String sHeader; .q4$)8[Pg
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for(int i=1;;i++) 3k(tv U+eC
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); cTRtMk%^
//Utility.log(in.readLine()); QUvSeNSp
sHeader=httpConnection.getHeaderFieldKey(i); %N(>B_t\
if(sHeader!=null) c$BH`" <*
{ HJym|G>%?
if(sHeader.equals("Content-Length")) BtKor6ba
{ XD0a :T)
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 6Uq;]@k%
break; Zz/p'3?#
} 4(oU88z
} ;~d$OM
else >#l:]T
break;
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} Sj|tR[SAoD
} EEK!'[<,sE
catch(IOException e){e.printStackTrace ();} XE2rx2k
catch(Exception e){e.printStackTrace ();} .oTS7rYw
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Utility.log(nFileLength); ) )FLM^dj
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