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**SiteFileFetch.java xdFP$Y~ogy
*/ UY }9
package NetFox; Li c{'w&
import java.io.*; 8|S1|t,
import java.net.*; z$I[kR%I{
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public class SiteFileFetch extends Thread { O]$*EiO\
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SiteInfoBean siteInfoBean = null; //文件信息Bean ^5FJ}MMJf
long[] nStartPos; //开始位置 ,Do$`yO+
long[] nEndPos; //结束位置 0~@L%~
FileSplitterFetch[] fileSplitterFetch; //子线程对象
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long nFileLength; //文件长度 36x5 q 1
boolean bFirst = true; //是否第一次取文件 .dg 4gr\D
boolean bStop = false; //停止标志 k@cZ"jYA
File tmpFile; //文件下载的临时信息 yP<:iCY
DataOutputStream output; //输出到文件的输出流 G>_42Rp
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) N>cp>&jV
public SiteFileFetch(SiteInfoBean bean) throws IOException oneSgJ
{ Xd19GP!
siteInfoBean = bean; [pRVZV
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); : e0R7sj
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); G]m[S-
if(tmpFile.exists ()) *1ID`o
{ Ul7pxzj
bFirst = false; O>b&-U"R
read_nPos(); i SAidK,
} \U<F\i
else k
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{ ^t^<KL;
nStartPos = new long[bean.getNSplitter()]; fRv
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nEndPos = new long[bean.getNSplitter()]; :)
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public void run() [6RV'7`Abj
{ +*:x#$phx
//获得文件长度 _I
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//分割文件 0%&fUz36E6
//实例FileSplitterFetch [6/%V>EM
//启动FileSplitterFetch线程 T`RQUJO
//等待子线程返回 B4*X0x
try{ 63y':g
if(bFirst) hNR>Hy\
{ 1Hk<_no5
nFileLength = getFileSize(); "z(fBnv
if(nFileLength == -1) 4?*"7t3
{ c@ZkX]g
System.err.println("File Length is not known!"); 0=(-8vwd
} i-"h"nF"
else if(nFileLength == -2) gne#v
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System.err.println("File is not access!");
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else U7f&N
{ NkjQyMF
for(int i=0;i<nStartPos.length;i++) No92Y^~/
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); ;hfG${l;
} |+4E
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for(int i=0;i<nEndPos.length-1;i++) 31o7R &v
{ [}xIg8
nEndPos = nStartPos[i+1]; 9>$%F;JP44
} |qudJucV
nEndPos[nEndPos.length-1] = nFileLength; w4<u@L
} qdkTg: QJ,
} 6!}m$Dvt~
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//启动子线程 D^R! |K/
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; HNHhMi`w
for(int i=0;i<nStartPos.length;i++) t&Y^W <
{ V@+<,tjq
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), dv4r\ R^
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), zk^7gx3x
nStartPos,nEndPos,i); ow>[#.ua
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); tB(X`A.|
fileSplitterFetch.start(); pQgOT0f
} 4S{l>/I
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), hoD[wAC
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ,9l!fT?iH
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", @l6dJ
nEndPos = " + nFileLength); C7*Yg$`{
// fileSplitterFetch[nPos.length-1].start(); 3Ns:O2|
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//等待子线程结束 Nno={i1jk
//int count = 0; $GfxMt
//是否结束while循环 B& f~.UH
boolean breakWhile = false; zKAyfn.A
}"; hz*a
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while(!bStop) {D2d({7
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write_nPos(); iNrmhiql
Utility.sleep(500); BKjPmrZ|
breakWhile = true; ewff(e9
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for(int i=0;i<nStartPos.length;i++) WZO
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if(!fileSplitterFetch.bDownOver) []fj~hj
{ W!9f'Yn
breakWhile = false; r@V(w`
break; D]>86&
} T6?d`i i1
} 93p9?4;n-
if(breakWhile) RkXLE"G'
break; 'w$we6f
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//count++; j~j
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//if(count>4) ne~#{q
// siteStop(); GH)+yD[o
} H(ftOd.y
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System.err.println("文件下载结束!"); |c+N)FB
} P6Z,ci17
catch(Exception e){e.printStackTrace ();} HBkQ`T
} 9mtC"M<
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//获得文件长度 Y?SJQhN6W
public long getFileSize() K0!#l Br
{ C&K(({5O
int nFileLength = -1; =|t1eSzc
try{ JU`'?b
URL url = new URL(siteInfoBean.getSSiteURL()); XXdMp poR
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); I
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httpConnection.setRequestProperty("User-Agent","NetFox"); :95_W/l
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int responseCode=httpConnection.getResponseCode(); Gqu0M`+7
if(responseCode>=400) oM7-1O
{ o+23?A~+
processErrorCode(responseCode); YO4ppL~xe
return -2; //-2 represent access is error K1:)J.ca_
} w9?wy#YI
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String sHeader; K?<Odw'k
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for(int i=1;;i++) .3SjkC4I
{ ]V7hl#VO
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); *>H'@gS
//Utility.log(in.readLine()); 4>eg@s N
sHeader=httpConnection.getHeaderFieldKey(i); pv.),Iv-68
if(sHeader!=null) \A"a>e
{ 9jFDBy+
if(sHeader.equals("Content-Length")) L.&Vi"M <@
{ Olrw>YbW
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ?fwr:aP~
break; t-{OP?cE1
} S^_yiV
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} fO|u(e
else ,(b~L<zN&
break; xGQ:7g+qu
} C
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} H zK=UcD
catch(IOException e){e.printStackTrace ();} [-}%B0S**
catch(Exception e){e.printStackTrace ();} e"09b<69
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Utility.log(nFileLength); T>?1+mruM
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