/* (>dL
**SiteFileFetch.java q\Z9.T+Qo
*/ =HMuAUa.
package NetFox; YW"nPZNPy~
import java.io.*; nDNK}O~'
import java.net.*; 'f6!a5qC
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public class SiteFileFetch extends Thread { <O{G&
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SiteInfoBean siteInfoBean = null; //文件信息Bean 8,:lw3x1
long[] nStartPos; //开始位置 Gn<e&|4>i}
long[] nEndPos; //结束位置 pzU:AUW
FileSplitterFetch[] fileSplitterFetch; //子线程对象 'JAe=K
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long nFileLength; //文件长度 l#]+I YD
boolean bFirst = true; //是否第一次取文件 pH0MVu(W
boolean bStop = false; //停止标志 v&` n}lS
File tmpFile; //文件下载的临时信息 ^{-Z3Yxd
DataOutputStream output; //输出到文件的输出流 s$/Z+"f(
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) +^a@U^V
public SiteFileFetch(SiteInfoBean bean) throws IOException MU1T="N^+
{ `[tYe <
siteInfoBean = bean; QtOT'<2t]
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); RG-,<G`
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ST\d-x
if(tmpFile.exists ()) T"E%;'(cp)
{ 3.%jet1
bFirst = false; PH!rWR
read_nPos(); C0L(ti;
} yI's=Iu`
else l+?sR<e?!
{ 6Q`7>l.|?
nStartPos = new long[bean.getNSplitter()]; 9A}nZ1Y
nEndPos = new long[bean.getNSplitter()]; 83Fmu/(
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} !XY}\zKq
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public void run() jDW$}^
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{ {!"lHM%
//获得文件长度 $"Nqto~
//分割文件 S#|5&SR
//实例FileSplitterFetch {|tMN,Z
//启动FileSplitterFetch线程 $HV`bJ5!L*
//等待子线程返回 U?ZxQj66}
try{ `e5f69"
if(bFirst) ^2mCF
{ hle@= e/n
nFileLength = getFileSize(); %UCuI9
if(nFileLength == -1) Fw6x
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{ pbqJtBBDDS
System.err.println("File Length is not known!"); do@BJWo
} @FuX^Q.[
else if(nFileLength == -2) _?9|,
{ +4K'KpFzZ
System.err.println("File is not access!"); %X(|Z4dL
} 5Veybchy "
else {^Q1b.=
{ >8DZj&j
for(int i=0;i<nStartPos.length;i++) AHTQF#U^
{ 200Fd8Ju
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 0EUC8Ni
} '>UQsAvm
for(int i=0;i<nEndPos.length-1;i++) PL7_j
{ Yn-;+ 4 K
nEndPos = nStartPos[i+1]; @.KFWAm
} fMZc_dsW9
nEndPos[nEndPos.length-1] = nFileLength; g=kuM
} L(3}
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} 9jrlB0
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//启动子线程 5i&+.?(Z=
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; WSV% Oy3V
for(int i=0;i<nStartPos.length;i++) ~`VD}{[,B
{ =%d0MZD
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), W
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), YXTd^M~@D
nStartPos,nEndPos,i); [f-<M@id/
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); > ^d+;~Q;
fileSplitterFetch.start(); $lAhKpdlW
} (\$=+' hy
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), F0+@FS0
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); bOdyrynh
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", %hb!1I
nEndPos = " + nFileLength); RhumNP<M
// fileSplitterFetch[nPos.length-1].start(); Ec|5'Kz]
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//等待子线程结束 ?L6ACi`9
//int count = 0; R>`TV(W`9
//是否结束while循环 r!O4]j_3
boolean breakWhile = false; ;O *o
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while(!bStop) !\N|$-M
{ mX
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write_nPos(); iC Z1ARi
Utility.sleep(500); W8s/"
breakWhile = true; h%(0|
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for(int i=0;i<nStartPos.length;i++) Ed&M
{ ;p2a .P
if(!fileSplitterFetch.bDownOver) 4Awl
{ j{;IiVHnR
breakWhile = false; /?
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break; ryoD 1OE
} e=EM07z
} L9(!L$
if(breakWhile) NW@guhK.
break; .eM
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//count++; BJ7m3[lz
//if(count>4) &&{_T4
// siteStop(); [[9XqD]
} ao.v]6a
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System.err.println("文件下载结束!"); P*sb@y>}O
} <bxp/#6D
catch(Exception e){e.printStackTrace ();} +UC-
} A]"IQ-
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//获得文件长度 @mrGG F
public long getFileSize() LzJNQd'
{ 9<S};I;
int nFileLength = -1; :p,DAt}
try{ Zp*0%x!e
URL url = new URL(siteInfoBean.getSSiteURL()); F
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 7Yd]#K{$
httpConnection.setRequestProperty("User-Agent","NetFox"); {pW(@4U
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int responseCode=httpConnection.getResponseCode(); # ~T
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if(responseCode>=400) k->cqtG
{ 4mJ[Wr\y
processErrorCode(responseCode); p(]o#$ 6[
return -2; //-2 represent access is error aw8q}:
} ia}V8i
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String sHeader; {QRrAi
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for(int i=1;;i++) p6e9mSs
{ U:o(%dk
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); L=."<,\
//Utility.log(in.readLine()); $*[-kIy
sHeader=httpConnection.getHeaderFieldKey(i); bp?4)C*R
if(sHeader!=null) 7*&$-Hv
{ #GT4/Ej}W
if(sHeader.equals("Content-Length")) -v7O*xm"
{ {]CO;5:
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); EzDQoN7Em
break; V[N4 {c
} V}UYr Va#9
} lGAKHCs
else />\6_kT
break; K<Qy1y~[
} >*aqYNft
} 9F^rXY.
catch(IOException e){e.printStackTrace ();} El)WjcmH
catch(Exception e){e.printStackTrace ();} G*lkVQ6?
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Utility.log(nFileLength); NN;'QiE
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return nFileLength; ZhpbbS
} Z#P:C":e
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//保存下载信息(文件指针位置) M;Dk$B{;R
private void write_nPos() HQOz
{ /Sag_[i
try{ bAa+MB#A
output = new DataOutputStream(new FileOutputStream(tmpFile)); ^E3 i]Oem
output.writeInt(nStartPos.length); Y]R;>E5o|
for(int i=0;i<nStartPos.length;i++)
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{ :>'4@{'
// output.writeLong(nPos); n!K<g.tjW
output.writeLong(fileSplitterFetch.nStartPos); {v>orP?
output.writeLong(fileSplitterFetch.nEndPos); D7"RZF\)
} YzD6S*wb
output.close(); {KO+t7'Q
} PLmf.hD \
catch(IOException e){e.printStackTrace ();} v!EE[[
catch(Exception e){e.printStackTrace ();} Q7b$j\;I
} &7CAxU;i3
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//读取保存的下载信息(文件指针位置) yxt`
private void read_nPos() CkJ\v%JAW
{ c<gvUVHIxR
try{ _PR><L_
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); OAhCW*B
int nCount = input.readInt(); C3p/|{TP
nStartPos = new long[nCount]; .% rB-vO:g
nEndPos = new long[nCount]; ,:e##g~k
for(int i=0;i<nStartPos.length;i++) If*t$f>y4N
{ LgX"Qk&Ca
nStartPos = input.readLong(); ^Q'^9M2)
nEndPos = input.readLong(); A=5A8B1
} jK{)gO
input.close(); iEJY[P1
} (3>Z NTm
catch(IOException e){e.printStackTrace ();} OYsG#
catch(Exception e){e.printStackTrace ();} v)a$;P%
} 2X t$KF,?
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private void processErrorCode(int nErrorCode) U%~L){<V[
{ [N-t6Z*
System.err.println("Error Code : " + nErrorCode); e(NpX_8
} )K0BH q7r
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//停止文件下载 -%*w&',G
public void siteStop() 0DFxVH_xN
{ C/w!Y)nB=
bStop = true; Xt!%W
for(int i=0;i<nStartPos.length;i++) $O/@bh1@p
fileSplitterFetch.splitterStop(); %;Dp~T`0
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} dsh S+d
} ]^63n/Twj
//负责部分文件的抓取 2sOV3~bB
**FileSplitterFetch.java V>`xTQG
*/ vl'2O7
package NetFox;
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import java.io.*; :$`"M#vMX
import java.net.*; xgi/,Nk '
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public class FileSplitterFetch extends Thread { $1h , <$5H
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String sURL; //File URL _Co*"hl>2
long nStartPos; //File Snippet Start Position +s}"&IV%
long nEndPos; //File Snippet End Position A{:PpYs
int nThreadID; //Thread's ID )9L:^i6
boolean bDownOver = false; //Downing is over BihXYux*
boolean bStop = false; //Stop identical ~9OART='
FileAccessI fileAccessI = null; //File Access interface X$L9kZ
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException jo.Sg:7&
{ 0koC;(<n
this.sURL = sURL; "Yo.]PU
this.nStartPos = nStart; pL{h1^O}
this.nEndPos = nEnd; J8T?=%?=
nThreadID = id; EMDsi2
fileAccessI = new FileAccessI(sName,nStartPos);//定位 W+&w'~M
} ~
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public void run() 26c,hPIeXY
{ Wn(pz)+Y
while(nStartPos < nEndPos && !bStop) 4&Q.6HkL
{ O;u&>BMk
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try{ Wgt[ACioN
URL url = new URL(sURL); OIuEC7XM^C
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); C>d_a;pX
httpConnection.setRequestProperty("User-Agent","NetFox"); z8SrZ#mg
String sProperty = "bytes="+nStartPos+"-"; /mb?C/ CI
httpConnection.setRequestProperty("RANGE",sProperty); A{5^A)$
Utility.log(sProperty); *20$u% z2
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InputStream input = httpConnection.getInputStream(); Q)\~=/Lb
//logResponseHead(httpConnection); ,~@Nhd~k
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byte[] b = new byte[1024]; >i> %@
int nRead; jXBAo
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) r>=)Y32Q
{ #PzRhanX
nStartPos += fileAccessI.write(b,0,nRead); p nS{W
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//if(nThreadID == 1) kvzGI>H:
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); E1U~ew
} A8?uCkG
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Utility.log("Thread " + nThreadID + " is over!"); CH6^;.
bDownOver = true; fa7I6 i
//nPos = fileAccessI.write (b,0,nRead); pNN6P sLt
} n5Ad@B g
catch(Exception e){e.printStackTrace ();} [MmOPm}@
} c:SA#.
} 6R%Ra
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//打印回应的头信息 #K|:BS
public void logResponseHead(HttpURLConnection con) =K6aiP$Ft
{ [xF (t @p
for(int i=1;;i++) qRXb9c
{ }1A Brbc
String header=con.getHeaderFieldKey(i); @S /jVXA
if(header!=null) ; ]*
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//responseHeaders.put(header,httpConnection.getHeaderField(header)); f?_UT}n
Utility.log(header+" : "+con.getHeaderField(header)); [
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else gK {-eS
break; ^f:oKKaAW;
} L'dR;T[;
} ,)u\G(N
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public void splitterStop() 'N?,UtG R
{ >tf y\P Y:
bStop = true; %!5[3b'h
} i1qhe?5
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} TA=VfA B
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/* /8\gT(@
**FileAccess.java 1epj/bB&