/* z'uK3ng\hH
**SiteFileFetch.java ={LMdC~5X
*/ moP,B~
package NetFox; pv^O"Bs
import java.io.*; hx/N1x
import java.net.*; "4vy lHIo
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public class SiteFileFetch extends Thread { T3`ludm^u
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SiteInfoBean siteInfoBean = null; //文件信息Bean Qne/g}PD`
long[] nStartPos; //开始位置
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long[] nEndPos; //结束位置 gTA%uRBa
FileSplitterFetch[] fileSplitterFetch; //子线程对象 3%.#}O,(
long nFileLength; //文件长度 ~T) Q$
boolean bFirst = true; //是否第一次取文件 OKFtl
boolean bStop = false; //停止标志 bdGIF'p%
File tmpFile; //文件下载的临时信息 uV 7BK+[O
DataOutputStream output; //输出到文件的输出流 GnP|x}YM
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) J|&JD?
public SiteFileFetch(SiteInfoBean bean) throws IOException rvr-XGK36\
{ pABs!A`N
siteInfoBean = bean; wdUBg*X8
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ,t\* ZTt$
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); S"Zp D.XX
if(tmpFile.exists ()) ]p_@@QTC
{ `7/Y@}n
bFirst = false; hWH:wB
read_nPos(); 35tu>^_#V
} a{{g<<H
else keB&Bjd&
{ UQB"v3Z
nStartPos = new long[bean.getNSplitter()]; SM`w;?L:?
nEndPos = new long[bean.getNSplitter()]; _/wV;h~R
} 1Bpv"67
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public void run() X^WrccNX
{ JPGzrEaZ
//获得文件长度 7"8hC
//分割文件 B" 3dQwQ
//实例FileSplitterFetch Qx [t/~
//启动FileSplitterFetch线程 irN6g#B?
//等待子线程返回 ezPz<iZ\N
try{ ,\qs4&
if(bFirst) $V1;la!
{ ^5=B`aich
nFileLength = getFileSize(); xhRngHU\z<
if(nFileLength == -1) To?W?s
{ c+2FC@q{l
System.err.println("File Length is not known!"); b$Vz2Fzx
} :]J Ye*
else if(nFileLength == -2) ?(R]9.5S
{ `X3^fg
System.err.println("File is not access!"); I_A@BnM{I
} N 5 $c]E
else =+AS/Jq
{ :UQTEdc{
for(int i=0;i<nStartPos.length;i++) RIIitgV_
{ g55`A`5%C
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ATR!7i\|
} +wkjS r`e
for(int i=0;i<nEndPos.length-1;i++) YfRkwKjy(
{ /{|fyKo\?
nEndPos = nStartPos[i+1]; P3oI2\)*i
} R+Y4|
nEndPos[nEndPos.length-1] = nFileLength; % rxO_
} H/Llj.-jg
} up'Tit
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//启动子线程 +Z85HY{
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; [o?*"c
for(int i=0;i<nStartPos.length;i++) p1vp8p
{ :H c0b=
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), u;`U*@
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), /tUy3myJ
nStartPos,nEndPos,i); i\dc>C ;
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); /c,(8{(O
fileSplitterFetch.start(); lg(bDKm
} Dq)j:f#QM
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), z`\F@pX%wC
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); e6!LS x}y
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", tz s</2
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nEndPos = " + nFileLength); yV"ZRrjO'Z
// fileSplitterFetch[nPos.length-1].start(); *W
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//等待子线程结束 aJcf`<p
//int count = 0; 95z]9UL
//是否结束while循环 ca>Z7qT!
boolean breakWhile = false; 0X^Ke(/89
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while(!bStop) ~j<+k4I~
{ 3"P }n
write_nPos(); Yh>]-SCw
Utility.sleep(500); 1CHeufQ
breakWhile = true; Ry|!pV
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for(int i=0;i<nStartPos.length;i++) ldp%{"ZZ
{ L@gWzC~?Q
if(!fileSplitterFetch.bDownOver) LU9A#
{ "70WUx(\t
breakWhile = false; G8;w{-{m
break; S*n@81Z
} *f?4
} ="g*\s?r
if(breakWhile)
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break; T8HF|%I
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//count++; yUp,NfS]o
//if(count>4) nH<eR)0
// siteStop(); 'z[Sp~I\
} SGe^ogO"v
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System.err.println("文件下载结束!"); ]GRWnif
} 3.qTLga|}
catch(Exception e){e.printStackTrace ();} lgb?)=
} q5#J~n8Wr
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//获得文件长度 M`l.t -ut
public long getFileSize() *q1% IJ
{ >>5NX"{
int nFileLength = -1; ;W^o@*i{>
try{ (t4&,W_spA
URL url = new URL(siteInfoBean.getSSiteURL()); +9")KQT
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); >2Kh0rIH
httpConnection.setRequestProperty("User-Agent","NetFox"); 7bV{Q355P
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int responseCode=httpConnection.getResponseCode(); 9J?wO9rI
if(responseCode>=400) iURk=*Z=
{ E~_]Lfs)
processErrorCode(responseCode); E8~}PQW:I
return -2; //-2 represent access is error 8f3vjK'
} YWxc-fPZ
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String sHeader; lHhUC16>
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for(int i=1;;i++) .;*s`t
{ -
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); oD$J0{K6
//Utility.log(in.readLine()); >`%'4<I
sHeader=httpConnection.getHeaderFieldKey(i); J;f!!<l\
if(sHeader!=null) ,Bal
{ )-`;1ca)s
if(sHeader.equals("Content-Length")) >J>b>SU=-
{ f?'JAC*
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); k+DR]icv
break; 'FS?a
} gR}35:$Z-
} 1)[]x9]^q'
else PgRDKygE
break; &