/* 8
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**SiteFileFetch.java -
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*/ #i@f%Bq-
package NetFox; cJaA*sg
import java.io.*; Lm~<BBp.
import java.net.*; 'k[qx}
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public class SiteFileFetch extends Thread { M,_
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SiteInfoBean siteInfoBean = null; //文件信息Bean G|f9l?p
long[] nStartPos; //开始位置 cVW7I
long[] nEndPos; //结束位置 BYX c
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 Zh;wQCDj
long nFileLength; //文件长度 }W8A1-UF
boolean bFirst = true; //是否第一次取文件 88v8lt;R
boolean bStop = false; //停止标志 0>Snps3*Z
File tmpFile; //文件下载的临时信息 .)b<cH~%
DataOutputStream output; //输出到文件的输出流 (cOe*>L;
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类)
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public SiteFileFetch(SiteInfoBean bean) throws IOException zp;!HP;/=
{ +FqD.= 8
siteInfoBean = bean; >-I <`y-H
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 4T(d9y
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); O*l,&5
if(tmpFile.exists ()) 63Zu5b"O/
{ H]R/=OYBUh
bFirst = false; &]o-ZZX
read_nPos(); XQ}J4J~Vm
} rgzra"u)
else /S]RP>cQ
{ 8F8?1
nStartPos = new long[bean.getNSplitter()]; l; _IH|A
nEndPos = new long[bean.getNSplitter()]; ]6^<VC`5D
} bPxL+
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} #j~FlY5
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public void run() " _2k3
{ y<Q"]H.CkQ
//获得文件长度 uVn"L:_
//分割文件 Ahwi
//实例FileSplitterFetch sWo`dZ\6WB
//启动FileSplitterFetch线程 |ZH(Z}m
//等待子线程返回 '-%1ILK$3r
try{ .@,t}:lD
if(bFirst) d#0:U
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{ z9ADF(J?0'
nFileLength = getFileSize(); ]@Zv94Z(
if(nFileLength == -1) 6i[Ts0H%<!
{ >N Bc-DX^
System.err.println("File Length is not known!"); 'NlhLu
} nU>P%|loXx
else if(nFileLength == -2) pNb2t/8%%
{ Sk|e#{
System.err.println("File is not access!"); HJAiQ[m5s
} 0qJ (RB
else :>fT=$i@
{ =:s`C,l.4
for(int i=0;i<nStartPos.length;i++) US ALoe
{ ;nBf
nStartPos = (long)(i*(nFileLength/nStartPos.length)); Wn=sF,c
} |&= -Nm
for(int i=0;i<nEndPos.length-1;i++) <l5i%?
{ =8T!ldVxES
nEndPos = nStartPos[i+1]; 6]?%1HSi
} v]V N'Hs?
nEndPos[nEndPos.length-1] = nFileLength; k\ #;
} RJWO h
} w1)TnGT
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//启动子线程 y8~OkdlN#
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; SCcvU4`o
for(int i=0;i<nStartPos.length;i++) \ZLi Y
{ :0l+x0l}
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *2X~NJCt
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 3
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nStartPos,nEndPos,i); $os]$5(
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ;Sivu-%
fileSplitterFetch.start(); %1Q:{m
} 0A)0Zw
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), V8M()7uJ
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Qfm$q~`D^W
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ^Lgvey%
nEndPos = " + nFileLength); e-ta 7R4
// fileSplitterFetch[nPos.length-1].start(); -"I$$C
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//等待子线程结束 <!sLfz?
//int count = 0; @Ul3J )=m
//是否结束while循环 <YU?1y?V
boolean breakWhile = false; $t;:"i>
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while(!bStop) 3}H{4]*%_
{ ;_bRq:!j;
write_nPos(); Uqel
UL}
Utility.sleep(500); zzf@U&x<
breakWhile = true; E#KZZ lbx
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for(int i=0;i<nStartPos.length;i++) ?kO.>o
{ g5nJ0=9
if(!fileSplitterFetch.bDownOver) +LRKS
{ 0/)2RmF
breakWhile = false; -iR2UE@M
break; dC({B3#e{
} qf x*a88
} 5IF5R#
if(breakWhile) PGP#$JC
break; O6G\0o
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//count++; ;g!rc#z2g
//if(count>4) dkw.o.e
// siteStop(); aoey
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} GmB&TDm
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System.err.println("文件下载结束!"); EQ$k^Y8 "
} [q?RJmB]
catch(Exception e){e.printStackTrace ();} c* ueI5i
} 8 MO-QO
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//获得文件长度 /2?
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public long getFileSize() [on_=N{W[
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int nFileLength = -1; t%Jk3W/f
try{ kGV:=h
URL url = new URL(siteInfoBean.getSSiteURL()); N#ggT9>X
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); i3w~&y-
httpConnection.setRequestProperty("User-Agent","NetFox"); ^{uHph9ny
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int responseCode=httpConnection.getResponseCode(); \\k=N(n
if(responseCode>=400) <Z%=lwtX
{ ,\6Vb*G|E>
processErrorCode(responseCode); 712nD ?>
return -2; //-2 represent access is error P2'N4?2
} (mIjG)4t
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String sHeader; kkjugm{D7
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for(int i=1;;i++) ~X3g_<b_8
{ F}}!e.>c
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); $2a"Ec!7
//Utility.log(in.readLine()); tDRR 3=9pX
sHeader=httpConnection.getHeaderFieldKey(i); ]6e(-v!U
if(sHeader!=null) BH0m[9nU;
{ 76tn`4NIP
if(sHeader.equals("Content-Length")) eUy*0
{ %R>n5m
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 1Vu#:6%
break; , -Hj
} "Pwa}{
} 5GM-*Ak @
else wyy
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break; K83'`W^
} HV~Fe!J_
} 9O 'j+?(`@
catch(IOException e){e.printStackTrace ();} 8oJl ]
catch(Exception e){e.printStackTrace ();} [#Qf#T%5h
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Utility.log(nFileLength); bG]0|
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return nFileLength; I!L J&>
} H7Q$k4\l
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//保存下载信息(文件指针位置) (I~
private void write_nPos() n[Q(q[ULV
{ ]VjvG};
try{ dx@dnWRT,
output = new DataOutputStream(new FileOutputStream(tmpFile)); &G"s!:
output.writeInt(nStartPos.length); G!Brt&_'
for(int i=0;i<nStartPos.length;i++) 3Q$4`p;
{ ;5ki$)v"
// output.writeLong(nPos); =Ydrct
output.writeLong(fileSplitterFetch.nStartPos); >=0]7k;
output.writeLong(fileSplitterFetch.nEndPos); gML8lu0)
} gxl7jY
output.close(); $E@n;0P
} E<jajYj
catch(IOException e){e.printStackTrace ();} Lng. X8D
catch(Exception e){e.printStackTrace ();} GNJ/|9
} ;}E}N:A
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//读取保存的下载信息(文件指针位置) iE'' >Z
private void read_nPos() RB %+|@c
{ t1w]L
try{ +;~N; BT
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); -zFJ)!/?
int nCount = input.readInt(); 6Hnez @d
nStartPos = new long[nCount]; Dz0D ^(;V
nEndPos = new long[nCount]; !`e`4y*N
for(int i=0;i<nStartPos.length;i++) 5!?5S$>
{ e6taQz@}
nStartPos = input.readLong(); "B{3q`(
nEndPos = input.readLong(); Onq^|r's&
} `PbY(6CF
input.close(); Z+v,o1
} `^[k8Z(
catch(IOException e){e.printStackTrace ();} oJ4HvrUO
catch(Exception e){e.printStackTrace ();} tY;<S}[@7w
} 0I.KHIBk
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private void processErrorCode(int nErrorCode) 3Z";a
{ o4" [{LyT
System.err.println("Error Code : " + nErrorCode); 1L!;lP2
} <mFDC?j
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//停止文件下载 DT`HS/~fH
public void siteStop() ;}SGJ7
{ Ye3o}G9z
bStop = true; q? ">
for(int i=0;i<nStartPos.length;i++) bh@Ct nO
fileSplitterFetch.splitterStop(); 9I/l+IS"X
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} 1L*[!QT4
} ]`)5 Qe4
//负责部分文件的抓取 &?R/6"J
**FileSplitterFetch.java &ww-t..
*/ xfeE D^?
package NetFox; W\~ie}D{
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import java.io.*; ^UKAD'_#%O
import java.net.*; 684& H8
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public class FileSplitterFetch extends Thread { 3JGrJ!x
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String sURL; //File URL BI?, 3
long nStartPos; //File Snippet Start Position G[ U5R?/
long nEndPos; //File Snippet End Position R>0[w$
int nThreadID; //Thread's ID SEM?vQ
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boolean bDownOver = false; //Downing is over d` ttWWPw
boolean bStop = false; //Stop identical h,$CJdDY]
FileAccessI fileAccessI = null; //File Access interface %e]G]B%
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ~2k.x*$
{ rNk'W, FU
this.sURL = sURL; #r #[&b
this.nStartPos = nStart; ]jD\4\M}
this.nEndPos = nEnd; 1Rd|P<y
nThreadID = id; -rU_bnm
fileAccessI = new FileAccessI(sName,nStartPos);//定位 \OVFZ D
} Z5'^81m$o
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public void run() f,yl'2{
{ dE"_gwtX
while(nStartPos < nEndPos && !bStop) uaO.7QSwN
{ w8X5kk
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try{ [p6:uNo
URL url = new URL(sURL); ]B )nN':
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); c?CD;Pk
httpConnection.setRequestProperty("User-Agent","NetFox"); >>T7;[h
String sProperty = "bytes="+nStartPos+"-"; jVnTpa!A
httpConnection.setRequestProperty("RANGE",sProperty); 8vuTF*{yZ
Utility.log(sProperty); O(I^:_eH
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InputStream input = httpConnection.getInputStream(); WkiT,(i
//logResponseHead(httpConnection); 6agq^wI
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byte[] b = new byte[1024]; +\Vw:~e
int nRead; :j`f%Vg~x
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) h"ZIh= j@
{ `R2Iw
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nStartPos += fileAccessI.write(b,0,nRead); >s5}pkAv|e
//if(nThreadID == 1) =J1V?x=l@
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); pK-tj
} z@VL?A(3
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Utility.log("Thread " + nThreadID + " is over!"); ^5s7mls
bDownOver = true; `n>|rd
//nPos = fileAccessI.write (b,0,nRead); \'Ca1[y@B
} sAc1t`
catch(Exception e){e.printStackTrace ();} R*pPUw\yn
} KS8@A/f
} i@+m<YS:2>
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//打印回应的头信息 +A8q.-N
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public void logResponseHead(HttpURLConnection con) .T7CMkYt
{ zd%f5L('
for(int i=1;;i++) iYB c4'X
{ c/+6M
String header=con.getHeaderFieldKey(i); )K?7(H/j
if(header!=null) 02Vfg42
//responseHeaders.put(header,httpConnection.getHeaderField(header)); a2.6S./
Utility.log(header+" : "+con.getHeaderField(header)); LC]0c)v#
else ?Ojv<L-f.:
break; G%HG6
} }~W/NP_F
} L91vp'+2
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