/* ;s\;78`0
**SiteFileFetch.java !H|82:`t+
*/ Ryba[Fz4Di
package NetFox; 3E!<p
import java.io.*; "R2t&X[9
import java.net.*; DxKfWb5 R
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public class SiteFileFetch extends Thread { C7 ]DJn
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SiteInfoBean siteInfoBean = null; //文件信息Bean fHe0W
long[] nStartPos; //开始位置 FL#g9U>
long[] nEndPos; //结束位置 Uy59zB2|=
FileSplitterFetch[] fileSplitterFetch; //子线程对象 r3H}*Wpf
long nFileLength; //文件长度 ^/C$L8#
boolean bFirst = true; //是否第一次取文件 k'ZUBTRq!
boolean bStop = false; //停止标志 Go\} A:|s
File tmpFile; //文件下载的临时信息 Z#F,y)YiO
DataOutputStream output; //输出到文件的输出流 $TA6S+
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) jxnQG A
public SiteFileFetch(SiteInfoBean bean) throws IOException RHx+HBZ
{ ~i }+P71
siteInfoBean = bean; }xf='lE
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ?#*
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); v= *Bb3dt
if(tmpFile.exists ()) 5&<d2EG6l'
{ 3cCK"kr
bFirst = false; @UpC{M--Wr
read_nPos(); h-La'}>?
} B]|6`UfB
else vNz;#Je
{ ,zN3? /7
nStartPos = new long[bean.getNSplitter()]; O J35En
nEndPos = new long[bean.getNSplitter()]; d2A
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} I>H;o{X#
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} P^8^1-b
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public void run() .lvI8Jf~X
{ b$v[@"1
//获得文件长度 ntj`+7mw
//分割文件 =|E
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//实例FileSplitterFetch \m=-8KpU
//启动FileSplitterFetch线程 A \MfF
//等待子线程返回 8
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try{ -7I1Lh#M
if(bFirst) #ox9&
{ q}<.x8\
nFileLength = getFileSize(); 1iNsX\M
if(nFileLength == -1) oNuPP5d[]
{ \6SMn6a4
System.err.println("File Length is not known!"); 6.U"_%
} X(GmiH /E
else if(nFileLength == -2) C#Hcv*D
{ ~5r=FF6
System.err.println("File is not access!"); I(OAEIz
} <H5n>3#pH
else
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{ 9Qzjqq:"Li
for(int i=0;i<nStartPos.length;i++) y Y>-MoF/t
{ 1
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); v)@,:u)
} <I7(eh6d
for(int i=0;i<nEndPos.length-1;i++) 5c:'>
{ IjG5X[@
nEndPos = nStartPos[i+1]; cq*p9c
} _m9~*
nEndPos[nEndPos.length-1] = nFileLength; b:P\=k]8#
} 2Vp>"
} X,RT<GNNb
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//启动子线程 R9tckRG#
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; O9t=lrYV!
for(int i=0;i<nStartPos.length;i++) N@Xg5huO
{ 7fTxGm
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1@A7h$1P
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), cVQatm
nStartPos,nEndPos,i); xi680'
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ^Sy^+=wK3
fileSplitterFetch.start(); 29"mE;j
} EHpu*P~W
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), YXF#c)#
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 44|deE3Z
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 2?GXkPF2;A
nEndPos = " + nFileLength); bnijM/73
// fileSplitterFetch[nPos.length-1].start(); wL'oImE
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//等待子线程结束 Bj@x$v#/^
//int count = 0; Bu7A{DRf
//是否结束while循环 %6AYCN?Ih
boolean breakWhile = false; >9-Dd)<
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\Y*!f|=of
while(!bStop) 9c#lLKrzG
{ 6#<Ir @z
write_nPos(); c}\
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Utility.sleep(500); U?8i'5)
breakWhile = true; Dba+z-3Nzy
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for(int i=0;i<nStartPos.length;i++) xM&EL>m>L
{ 1'Nh jL
if(!fileSplitterFetch.bDownOver) y:Z$LmPc<
{ z{%oJ_
breakWhile = false; y k?SD1hj
break; j7f5|^/x3
} Ll,I-BQ9
} aT&t_^[]
if(breakWhile) GF&_~48GD
break; XmP;L(wa
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//count++; xXO RIlD
//if(count>4) ZQ|5W6c
// siteStop(); <BSSa`N`
} {`a(Tl8V
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System.err.println("文件下载结束!"); Fav?,Q,n
} {Jrf/p9w
catch(Exception e){e.printStackTrace ();} ^Sw2xT$p{j
} \H^;'agA
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//获得文件长度 =tq1ogE
public long getFileSize() ThtMRB)9
{ 6_WmCtvF
int nFileLength = -1; mxgqS=`
try{ jDkm:X}:
URL url = new URL(siteInfoBean.getSSiteURL()); -!l^]MU
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); L${m/@9
httpConnection.setRequestProperty("User-Agent","NetFox"); >z QNHSi
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int responseCode=httpConnection.getResponseCode(); MZ WmlJ
if(responseCode>=400) Y,'%7u
{ E${J
processErrorCode(responseCode); n!ZMTcK8
return -2; //-2 represent access is error mB~~_]M
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} ^ESUMXb
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String sHeader; 0*/kGvw`i
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for(int i=1;;i++) s'TY[
{ 7#ofNH J
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); "mR*7o$|
//Utility.log(in.readLine()); 6(Vhtr2(*
sHeader=httpConnection.getHeaderFieldKey(i); J smB^
if(sHeader!=null) =5?.'XMk
{ `%Q&</X
if(sHeader.equals("Content-Length")) 6AAswz'$P
{ F_
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); U9
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break; /[%w*v*'
} okstY4f'
} p-xd k|'[
else D^|9/qm$
break; K3L"^a
} yPoSJzC=[
} gGEIK0\{
catch(IOException e){e.printStackTrace ();} eeW`JG-E
catch(Exception e){e.printStackTrace ();} uaaf9SL?
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Utility.log(nFileLength); _lX8K:C(
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return nFileLength; b1xpz1
} b!^@PIX
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//保存下载信息(文件指针位置) P#MK
private void write_nPos() &<Zdyf?[Ou
{ QD$Gw-U-l=
try{ FAw1o
output = new DataOutputStream(new FileOutputStream(tmpFile)); <: :VCA %
output.writeInt(nStartPos.length); $Asr`Q1i
for(int i=0;i<nStartPos.length;i++) g5Hr7Km
{ *C7F2o
// output.writeLong(nPos); R5(F)abi
output.writeLong(fileSplitterFetch.nStartPos); '#q4Bc1
output.writeLong(fileSplitterFetch.nEndPos); bY)#v?
}
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output.close(); Zj!Abji=O
} FshC )[w,
catch(IOException e){e.printStackTrace ();} 2 x32U
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catch(Exception e){e.printStackTrace ();} _~&9*D$
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} DZk1ZLz
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//读取保存的下载信息(文件指针位置) Vm,,uF
private void read_nPos() I3(d<+M
{ !),t"Ae?>
try{
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DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); RgZOt[!.
int nCount = input.readInt(); Hhl-E:"H`
nStartPos = new long[nCount]; /8c&Axuv
nEndPos = new long[nCount]; -{{[cTI
for(int i=0;i<nStartPos.length;i++) R/~,i;d>
{ 0%#\w*X8
nStartPos = input.readLong(); G\kpUdj}
nEndPos = input.readLong(); 4MLH+/e
} TH:W#Ot
input.close(); 59lj7
} sJU`u'w
catch(IOException e){e.printStackTrace ();} vy9dAl
catch(Exception e){e.printStackTrace ();} ]iVLHVqz
} /iG7MC\`
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private void processErrorCode(int nErrorCode) J#
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{ :c=.D;,
System.err.println("Error Code : " + nErrorCode); cbYK5fj"T
} -[heV| $;
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//停止文件下载 g)1X&>
public void siteStop() !OAvD#
{ %u!b& 5]e
bStop = true; !MV@)
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for(int i=0;i<nStartPos.length;i++) W5 ec
fileSplitterFetch.splitterStop(); #|f~s
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} >2lwWXA
} pj8azFZ
//负责部分文件的抓取 g7n"
**FileSplitterFetch.java ?fK1
*/ E!mmLVa9
package NetFox; qZ+H5AG2
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import java.io.*; Gu;OVLR|
import java.net.*; ;;#`#v
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public class FileSplitterFetch extends Thread { tC)6
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String sURL; //File URL *y]+dK&-
long nStartPos; //File Snippet Start Position 5-vo0:hk
long nEndPos; //File Snippet End Position (kw5>c7
int nThreadID; //Thread's ID #g9ZX16}
boolean bDownOver = false; //Downing is over |He=LQ}0
boolean bStop = false; //Stop identical @Rq}nq=k
FileAccessI fileAccessI = null; //File Access interface ]?K.
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Jp~zX
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{ X.V[0$.;
this.sURL = sURL; L:R<e#kgS
this.nStartPos = nStart; .%}+R|g
this.nEndPos = nEnd; ]Kh2;>=
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nThreadID = id; 8Vn4.R[vE
fileAccessI = new FileAccessI(sName,nStartPos);//定位 /,tAoa~FA
} (S/F)?
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public void run() A)NkT`<)
{ 2`bdrRD0
while(nStartPos < nEndPos && !bStop) (K<9hL+X
{ l"pN90B4
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try{ ;['a
URL url = new URL(sURL); MesRa(
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); o\=n4;S
httpConnection.setRequestProperty("User-Agent","NetFox"); HdX2YPYn;
String sProperty = "bytes="+nStartPos+"-"; bGmx7qt#
httpConnection.setRequestProperty("RANGE",sProperty); zm#nV
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Utility.log(sProperty); .\:J~(
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InputStream input = httpConnection.getInputStream(); A9:NKY{z
//logResponseHead(httpConnection); uGVy6,
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byte[] b = new byte[1024]; I;MD>%[W,
int nRead; h<l1U'Bn7
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) %,q.),F
{ anN#5jt
nStartPos += fileAccessI.write(b,0,nRead); <48<86TP
//if(nThreadID == 1) \}"m'(\c
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 5M_Wj*a}7
} 6lFfS!ZFA
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Utility.log("Thread " + nThreadID + " is over!"); nsuX*C7
bDownOver = true; n1v5Q2xw
//nPos = fileAccessI.write (b,0,nRead); g@ith&*=h
} ,xsH|xW
catch(Exception e){e.printStackTrace ();} nE W31 8
} sRhKlUJG
} *_-'/i
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//打印回应的头信息 [iS$JG-
public void logResponseHead(HttpURLConnection con) iCQ>@P]nE
{ 8|g<X1H{M
for(int i=1;;i++) 8y2+$
{ dK9Zg,DZL
String header=con.getHeaderFieldKey(i); kLP0{A
if(header!=null) UQ?%|y*Kc
//responseHeaders.put(header,httpConnection.getHeaderField(header)); Xrqx\X
Utility.log(header+" : "+con.getHeaderField(header)); zu\`1W^
else 6,b"
break; j<yiNHC
} P 7D!6q
} )%Iv[TB[
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public void splitterStop() Dm0a.J v
{ 1NLg _UBOK
bStop = true; `ldz`yu6++
} Me3dpF
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} /n,a?Ft^N)
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/* bn9;7`>.
**FileAccess.java zw@'vncc
*//文件访问(定位,写) o^p
package NetFox; M[]A2'fS
import java.io.*; L:&k(YOBA
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public class FileAccessI implements Serializable{ (R}ii}&
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Vm1-C<V9
RandomAccessFile oSavedFile; ps|)cW3`
long nPos; VR?^HA9
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public FileAccessI() throws IOException R
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{ va)%et0!
this("",0); L@Nu/(pB=
} >]D4Q<TY
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public FileAccessI(String sName,long nPos) throws IOException a*dQ
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{ NZLAk~R;0
oSavedFile = new RandomAccessFile(sName,"rw"); *?p|F&J
this.nPos = nPos; &