/* kV!1k<f
**SiteFileFetch.java 9JJ6$cLF
*/ #MiO4zXgd
package NetFox; 8+32hg@^F
import java.io.*; }ov>b2H#<
import java.net.*; y6MkaHW[m
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public class SiteFileFetch extends Thread { +~M.VsX
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SiteInfoBean siteInfoBean = null; //文件信息Bean 8E9k7
long[] nStartPos; //开始位置 CoWT
long[] nEndPos; //结束位置 &SPr#OkW
FileSplitterFetch[] fileSplitterFetch; //子线程对象 4E1j0ARQQ
long nFileLength; //文件长度 T
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boolean bFirst = true; //是否第一次取文件 9F~5Ht
boolean bStop = false; //停止标志 dP]Z:
File tmpFile; //文件下载的临时信息 K5??WB63B
DataOutputStream output; //输出到文件的输出流 eiRVw5g
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) -_]Ceq/
public SiteFileFetch(SiteInfoBean bean) throws IOException SbsdunW+?
{ Rd5pLrr[0)
siteInfoBean = bean; ^$RpP+d
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); VD =f 'D
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); P\z1fscnK
if(tmpFile.exists ()) =2vZqGO30
{ {BJH}vV1)
bFirst = false; #Pg?T%('`
read_nPos(); h53G$Ol.
} !d[]Qt%mA
else rhGB l`(B
{ t^%)d7$
nStartPos = new long[bean.getNSplitter()]; s:z
nEndPos = new long[bean.getNSplitter()]; _)4zm
} C]ax}P>BQ
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} RK)ikLgp
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public void run() I7t}$S6
{ Lw?>1rTT/
//获得文件长度 _p9 _P g8
//分割文件 &._Mh
//实例FileSplitterFetch >N}+O<Fc
//启动FileSplitterFetch线程 <xH!
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//等待子线程返回 s9fEx-!y
try{ C/ ]Bx
if(bFirst) ;$qc@)Uwp
{ ?}u][akM
nFileLength = getFileSize(); [d>2F
if(nFileLength == -1) {e0aH `me
{ !thFayq
System.err.println("File Length is not known!"); Z0wH%o\
} U2\k7I
else if(nFileLength == -2) H;Gs0Qi;
{ 2_Cp}Pj
System.err.println("File is not access!"); Lg2PP#r
} y\dx \
else &hZ6CV{
{ zhyf}Ta'
for(int i=0;i<nStartPos.length;i++) 2j1HN
{ ~i>'3j0@k
nStartPos = (long)(i*(nFileLength/nStartPos.length)); |]-~yYqP3
} eQqCRXx
for(int i=0;i<nEndPos.length-1;i++) |t#s h
{ &rc
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nEndPos = nStartPos[i+1]; uD ;T
} eq9qE^[Z&
nEndPos[nEndPos.length-1] = nFileLength; ZOx;]D"s
} UM0#S}
} 5D3&6DCH
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//启动子线程 2t=&h|6EW
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ?4R q +
for(int i=0;i<nStartPos.length;i++) LVL#qNIu
{ :
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), (?.h<v1}
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), EvA8<o
nStartPos,nEndPos,i); ,.Lo)[(
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); PX?^v8wlqL
fileSplitterFetch.start(); F0kQ/x
} +5kQ;D{+
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *$mb~k^R
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); :U @L$
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", |UcF%VNnz1
nEndPos = " + nFileLength); 7a.iT-*
// fileSplitterFetch[nPos.length-1].start(); Vu<mOuh
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//等待子线程结束 cn9=wm\\
//int count = 0; E6- ~
//是否结束while循环 &G3$q,`H
boolean breakWhile = false; }UG<_bE|
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while(!bStop) 4!?4Tc!X
{ a4q02 cV
write_nPos(); &kH7_Lz
Utility.sleep(500); =v{ R(IX%
breakWhile = true; -^rdB6O6j
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for(int i=0;i<nStartPos.length;i++) |CBJ8],mT
{ KF`mOSP
if(!fileSplitterFetch.bDownOver) 8yuTT^
{ Imo?)dYK
breakWhile = false; XhOg>
break; mt-t8~A
} =]<X6!0mR
} !~-@sq
if(breakWhile) ^)3=WD'!
break; DuC_uNJ
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//count++; )_Iu7b
//if(count>4) ;y>}LGG
// siteStop(); _Vr}ipx-k
} ,awkL
:
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System.err.println("文件下载结束!"); "m}N
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} op_
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catch(Exception e){e.printStackTrace ();} 2W63/kRbU
} Ye[Fu/0
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//获得文件长度 8:
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public long getFileSize() ~jC$C2A0
{ N,ZmGzNP)
int nFileLength = -1; Mo4igP
try{ mDA1$fj"
URL url = new URL(siteInfoBean.getSSiteURL()); u>2opI~m
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); yJ8_<A
httpConnection.setRequestProperty("User-Agent","NetFox"); 9}d^ll&
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int responseCode=httpConnection.getResponseCode(); _wZr`E)
if(responseCode>=400) Wtflw>-
{ @^b>S6d"
processErrorCode(responseCode); u4[rA2Bf8E
return -2; //-2 represent access is error YXGxE&!
} 1(Lq9hs`
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String sHeader; $,1KD3;+]
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for(int i=1;;i++) In}~bNv?
{ ;O({|mpS\
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); BM02k\%
//Utility.log(in.readLine()); =>xyJ->R
sHeader=httpConnection.getHeaderFieldKey(i); d s}E|Q
if(sHeader!=null) ,WS{O6O7
{ l_T5KV
if(sHeader.equals("Content-Length")) ban;HGGNG{
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader));
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break; tSunO-\y
} HU-#xK
} :2;c@ uj
else u9ue>I/
break; PkF'#W%
} /I0}(;^y
} %nj{eT
catch(IOException e){e.printStackTrace ();} ->@iw!5xu
catch(Exception e){e.printStackTrace ();} eXtlqU$
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Utility.log(nFileLength); W0# VD e]>
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return nFileLength; q&: t$tSS
} !f#[4Xw
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//保存下载信息(文件指针位置) dca?(B!'6
private void write_nPos() D (">bR)1
{ Jrx]/CM
try{ j.29nJ
output = new DataOutputStream(new FileOutputStream(tmpFile)); gCW
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output.writeInt(nStartPos.length); sW@_q8lG
for(int i=0;i<nStartPos.length;i++) xGK"`\V
{ >]?!9@#IH
// output.writeLong(nPos); ~4ysg[`
output.writeLong(fileSplitterFetch.nStartPos); sq}uq![?M
output.writeLong(fileSplitterFetch.nEndPos); uBo~PiJ2"
} 2?c%<_jPA
output.close(); ;VPYWss
} fZ pUnc
catch(IOException e){e.printStackTrace ();} B..> *Xb
catch(Exception e){e.printStackTrace ();} *6]_ 6xO
} [vcSt5R=
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//读取保存的下载信息(文件指针位置) :ZU-Vi.b
private void read_nPos() tL
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{ ZrDr/Q~
try{ #80r?,q
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); A{\!nq_~N
int nCount = input.readInt(); ||rZ+<
nStartPos = new long[nCount]; r-c1_
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nEndPos = new long[nCount]; [J43]
for(int i=0;i<nStartPos.length;i++) Zex`n:Wl?j
{ 4tFnZ2x
nStartPos = input.readLong(); >W=^>8u
nEndPos = input.readLong(); EZ)GW%Bm2
} Ly`FU)
input.close(); 8,?*eYNjb
} v'u}%FC
catch(IOException e){e.printStackTrace ();} Cq<k(TKAX
catch(Exception e){e.printStackTrace ();} S(hT3MAW
} O|0} m
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private void processErrorCode(int nErrorCode) 1IZTo!xi
{
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System.err.println("Error Code : " + nErrorCode); -y)g}D%
} OG2&=~hOz-
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//停止文件下载 @i@f@.t
public void siteStop() 87:V-*8
{ 3>buZ6vh
bStop = true; 4>te>[
for(int i=0;i<nStartPos.length;i++) j79$/ Ol
fileSplitterFetch.splitterStop(); C:
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} hrTl:\
} to;cF6X
//负责部分文件的抓取 d8/KTl
**FileSplitterFetch.java ,IQ%7*f;O_
*/ txemu*
package NetFox; %51HJB}C]
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import java.io.*; )r:gDd#/X
import java.net.*; ?F@X>zR2
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public class FileSplitterFetch extends Thread { RV, cQ K
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String sURL; //File URL ;F\sMf{
long nStartPos; //File Snippet Start Position Pxe7 \e
long nEndPos; //File Snippet End Position LkUi^1((e
int nThreadID; //Thread's ID yI_MYL[
boolean bDownOver = false; //Downing is over ]d50J@W
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boolean bStop = false; //Stop identical (,2U?p
FileAccessI fileAccessI = null; //File Access interface _}:#T8h
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException t%]b`ad
{ F=~LVaF/_
this.sURL = sURL; g9:V00^<
this.nStartPos = nStart; .0#{?R,
this.nEndPos = nEnd;
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nThreadID = id; k= oCpXq^
fileAccessI = new FileAccessI(sName,nStartPos);//定位 s,;L6nX"
} WEk3
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public void run() gL6.,4q+1
{ rJ fO/WK
while(nStartPos < nEndPos && !bStop) (j884bu
{ y_N h5
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try{ ?/^x)Nm
URL url = new URL(sURL); C+Pw
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); lsRW.h,
httpConnection.setRequestProperty("User-Agent","NetFox"); S]}W+BF3
String sProperty = "bytes="+nStartPos+"-"; 2U`g[1
httpConnection.setRequestProperty("RANGE",sProperty); /7p1y v
Utility.log(sProperty); bKP@-<:]
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InputStream input = httpConnection.getInputStream(); Ai.^~#%X
//logResponseHead(httpConnection); fIm=^}?fwK
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byte[] b = new byte[1024]; QDJe:\n
int nRead; yh"48@L'D
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Ts
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{ ]{PJ
nStartPos += fileAccessI.write(b,0,nRead); hR%2[lBn!]
//if(nThreadID == 1) #i}:CI>2
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); z)XIA)i6
} m005*>IY
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Utility.log("Thread " + nThreadID + " is over!"); &U0Y#11Cx
bDownOver = true; 5qQ\ H}
//nPos = fileAccessI.write (b,0,nRead); F@Cxjz
} -%6Y&_5VK
catch(Exception e){e.printStackTrace ();} E _j=v
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} D|E,9|=v
} W``
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//打印回应的头信息 uEcK0>xp
public void logResponseHead(HttpURLConnection con) "| W``&pM
{ i4r8146D[
for(int i=1;;i++) UA}N
{ |t&gyj
String header=con.getHeaderFieldKey(i); vFgX]&bE
if(header!=null) '"fZGz?
//responseHeaders.put(header,httpConnection.getHeaderField(header)); D}A>`6W<