/* L\"=H4r
**SiteFileFetch.java j+Tk|GRab
*/ C8{CKrVE
package NetFox; RF6|zCWuI
import java.io.*; Dxu)by
import java.net.*; -><_J4
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public class SiteFileFetch extends Thread { Wh4lz~D\@
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SiteInfoBean siteInfoBean = null; //文件信息Bean 'kUrSM'*$N
long[] nStartPos; //开始位置 $MsM$]~
long[] nEndPos; //结束位置 [jLx}\]
FileSplitterFetch[] fileSplitterFetch; //子线程对象 nl?|X2?C
long nFileLength; //文件长度 PH=wPft
boolean bFirst = true; //是否第一次取文件 |%M%j'9
boolean bStop = false; //停止标志 d&U;rMEv
File tmpFile; //文件下载的临时信息 kW(8i}bg
DataOutputStream output; //输出到文件的输出流 =0v{+#}
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) _wqFKj
public SiteFileFetch(SiteInfoBean bean) throws IOException ~MQN&
{ ?Ts
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siteInfoBean = bean; as\V,
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//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 9GQTe1[t4
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); GvVuF S>y
if(tmpFile.exists ()) YE-kdzff
{ 6!gGWn5>}
bFirst = false; E3KPjK
read_nPos(); |0Zj/1<$
} +~[19'GH
else <4>6k7W
{ bRIb'%=+GA
nStartPos = new long[bean.getNSplitter()]; W>,b1_k
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nEndPos = new long[bean.getNSplitter()]; 4<O[d
} 3g6R<Ez
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} 3+#bkG
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public void run() Rn TPU`
{ O=+C Kx@
//获得文件长度 *]H ./a:1
//分割文件 _R8-Hj E
//实例FileSplitterFetch R2;-WxnN]
//启动FileSplitterFetch线程 ~7Jc;y&
//等待子线程返回 @cXY"hP`
try{ 0Ifd!
if(bFirst) lOEbh
{ *vj5J"Y(;t
nFileLength = getFileSize(); (d~'H{q
if(nFileLength == -1) 8EP^M~rv
{ RZz] .Nx
System.err.println("File Length is not known!"); C( r?1ma
} 2Hq!YsJ4]
else if(nFileLength == -2) c(eu[vj:
{ ricDP 9#a
System.err.println("File is not access!"); >uUbWKn3
} W*_ifZ0s.
else #ob">R
{ hxtu^E/
for(int i=0;i<nStartPos.length;i++) U 26Iz
{ /Ia#udkNMp
nStartPos = (long)(i*(nFileLength/nStartPos.length)); U3Dy:K[
} 6Es-{u(,
for(int i=0;i<nEndPos.length-1;i++) lc'Jn$O@
{ }LE/{]A
nEndPos = nStartPos[i+1]; 'Y-c*q
} )qxL@w.
nEndPos[nEndPos.length-1] = nFileLength; c8u&ev.U
} jy1*E3vQ
} DLz~$TF^
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//启动子线程 3XA^{&}
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; &-{4JSII
for(int i=0;i<nStartPos.length;i++) <ZnAPh
{ t<`BaU
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), OgzPX^q/=
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), DG&
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nStartPos,nEndPos,i); MqNp*n2
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); i.'f<z$<
fileSplitterFetch.start(); sNNt0q(
} AAs&wYp8Yh
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), SIg=_oa
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); E>7[ti_p5
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", C f<,\Aav
nEndPos = " + nFileLength); T{ojla(
// fileSplitterFetch[nPos.length-1].start(); ]6(NeS+
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//等待子线程结束 3c
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//int count = 0; bS0LjvY9g
//是否结束while循环 >uI|S
boolean breakWhile = false; Kj}}O2
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while(!bStop) rfK%%-
{ ~Ipl'cE
write_nPos(); :,cSEST
Utility.sleep(500); `4$" mO>+
breakWhile = true; 0BBWuNF.
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for(int i=0;i<nStartPos.length;i++) _jr%s
{ BG=h1ybz
if(!fileSplitterFetch.bDownOver) ni3^J5X W
{ V-)q&cbW]q
breakWhile = false; iHR?]]RF
break; WSh+5](:
} qf'uXH
} J%%nv5y
if(breakWhile) @(ev``L5g
break; l3.HL> o
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//count++; NBLOcRSh
//if(count>4) j]kx~
// siteStop(); 2vK{Yw
} i)eub`uMy
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System.err.println("文件下载结束!"); SB]|y-su
} (LGx;9S?
catch(Exception e){e.printStackTrace ();} Xd{"+'29
} gx#TRp}-
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//获得文件长度 3F<My+J
public long getFileSize() rrmr#a
{ a2sN$k
int nFileLength = -1; TTBl5X
try{ e)GFJ3sW_
URL url = new URL(siteInfoBean.getSSiteURL()); nIdvff
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Azu$F5G!n
httpConnection.setRequestProperty("User-Agent","NetFox"); :Oy9`vv
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int responseCode=httpConnection.getResponseCode(); D4[t@*m>7
if(responseCode>=400) 8 \%*4L'
{ bluhiiATd
processErrorCode(responseCode); }Vk#w%EJ
return -2; //-2 represent access is error cO_En`F
} 29}(l#S}m
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String sHeader; t13wQt
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for(int i=1;;i++) CH!Lf,G
{ YY'46
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); qMKXS,s
//Utility.log(in.readLine()); Bv@NE2
sHeader=httpConnection.getHeaderFieldKey(i); 1Hk`i%
if(sHeader!=null) uq{w1O5
{ 11O^)_|c
if(sHeader.equals("Content-Length")) 1iig0l6\m
{ #r>
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); D&: