/* ;W]\rft[
**SiteFileFetch.java wi_'iv
*/ : g6n,p_#
package NetFox; \]uV!)V5B
import java.io.*; -TO\'^][X
import java.net.*; ;"kaF!
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public class SiteFileFetch extends Thread { NX[4PKJ0C
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SiteInfoBean siteInfoBean = null; //文件信息Bean .iG&Lw\,
long[] nStartPos; //开始位置 W$0^(FH[
long[] nEndPos; //结束位置 c!#:E`
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Y}s@WJ
long nFileLength; //文件长度 E&`Nh5 JfC
boolean bFirst = true; //是否第一次取文件 x79Ha,
boolean bStop = false; //停止标志 eJ0?=u!x
File tmpFile; //文件下载的临时信息 a5YIUVCv
DataOutputStream output; //输出到文件的输出流 n]}W``=7
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) x3 >
public SiteFileFetch(SiteInfoBean bean) throws IOException asHxL!
{ q1?&Ev^
siteInfoBean = bean; *v
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//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); X5LBEOG
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); #|[
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if(tmpFile.exists ()) T 20&F
{ ;&V s4
bFirst = false; TaE~s
read_nPos(); H@bf'guA|B
} T*g:#
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else Dre2J<QL
{ i4JqT \q
nStartPos = new long[bean.getNSplitter()]; eI45PMP
nEndPos = new long[bean.getNSplitter()]; _{<seA
} 1u3,'8F
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} U_x )#,4
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public void run() wLc4Dm*V
{ yY?b.ty
//获得文件长度 HK`I\,K
//分割文件 '3zc|eJt&
//实例FileSplitterFetch )nL`H^
//启动FileSplitterFetch线程 >leU:7
//等待子线程返回 [
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try{ 'AN>`\mR$
if(bFirst) _SW3_8SuM.
{ /1Ue?)g
nFileLength = getFileSize(); k0Ol*L!p
if(nFileLength == -1) DC{>TC[p1k
{ ]a5 f2lE
System.err.println("File Length is not known!"); lXcx@#~
} AGLscf.
else if(nFileLength == -2) 'Ut7{rZ5
{ |{CfWSB7~@
System.err.println("File is not access!"); ggJO:$?$L
} :Nofp&
else 9eH$XYy
{ 15o9 .
for(int i=0;i<nStartPos.length;i++) 'Lu__NfN
{ |PC*=ykT3
nStartPos = (long)(i*(nFileLength/nStartPos.length)); (Jz1vEEV
} Na:w]r:y
for(int i=0;i<nEndPos.length-1;i++) }GeSu|m(
{ : |>Gc39`t
nEndPos = nStartPos[i+1]; z11O F
} 6Vz9?puD
nEndPos[nEndPos.length-1] = nFileLength; |`.([2
} l<A|d{" ]
} D8$G `~hD
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//启动子线程 gP;&e:/3
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; r-Pkfy(
for(int i=0;i<nStartPos.length;i++) ZzSz%z_sE
{ Ft&]7dT{W
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ' ~8KSF*!p
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), H !$o$}A
nStartPos,nEndPos,i); NuQdSj_>
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos);
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fileSplitterFetch.start(); E"5*Ei)^3
} "thdPZ
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), NfjE`
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); FY#C.mL
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 2+e}*&iQpp
nEndPos = " + nFileLength); MB]<Dyj,
// fileSplitterFetch[nPos.length-1].start(); EwvoQ$#jv
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//等待子线程结束 ,^\2P$rT
//int count = 0; De'_SD|=
//是否结束while循环 7t0er'VC
boolean breakWhile = false; ;EP:o%r
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while(!bStop) 5Ou`z5S\k
{ -#N.X_F
write_nPos(); }E50>g
Utility.sleep(500); ^f4s"T
breakWhile = true; 6\q]rfQ
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for(int i=0;i<nStartPos.length;i++) 0"28'
{ ).`1+b
if(!fileSplitterFetch.bDownOver) qKr8)}h
{ d,B:kE0Y
breakWhile = false; Bf ~vA4
break; KUlp"{a`,K
} G}b]w~ML~
} !Fd~~v
if(breakWhile) RC7]'4o
break; 3u*4o=4e
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//count++; 3q\,$*D.
//if(count>4) nxnv,AZG
// siteStop(); =5~jx
} \/zq7j
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System.err.println("文件下载结束!"); mwHB(7YS,
} FKDk +ojw
catch(Exception e){e.printStackTrace ();} YNKHN2E8
} Czs8!S
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//获得文件长度 `yrB->|vG
public long getFileSize() 3no%E03p
{ [+T.at
int nFileLength = -1; i&bA2p3+d
try{ [9evz}X
URL url = new URL(siteInfoBean.getSSiteURL()); qouhuH_WtJ
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); EE&K0<?T|:
httpConnection.setRequestProperty("User-Agent","NetFox"); ,8U&?8l
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int responseCode=httpConnection.getResponseCode(); +Vb.lH[av
if(responseCode>=400) Gp?a(-K5
{ ?+@n3]`0
processErrorCode(responseCode); fphv
return -2; //-2 represent access is error e^6)Zz1\
} +%yfcyZ.
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String sHeader;
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for(int i=1;;i++) sBj(Qd
{ _mqL8ho
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 3`t#UY).F
//Utility.log(in.readLine()); V#2+"(7h
sHeader=httpConnection.getHeaderFieldKey(i); W <9T0sZ
if(sHeader!=null) aL+
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{ %
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if(sHeader.equals("Content-Length")) _<n~n]%
{
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); -;s|
break; '.IW.{;$
} `uv2H$
} QO<jI#
else 2Q/x@aT,h
break; K
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} \tf<B\oa
} {j.bC@hWw
catch(IOException e){e.printStackTrace ();} cM(:xv
catch(Exception e){e.printStackTrace ();} l:
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Utility.log(nFileLength); |s7s6k)mm
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return nFileLength; 27eooY1
} ^n*)7K[
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//保存下载信息(文件指针位置) y;35WtDVb
private void write_nPos() Nyku4r0
{ 7-bd9uVK
try{ $SlIr<'*"
output = new DataOutputStream(new FileOutputStream(tmpFile)); H4WP~(__
output.writeInt(nStartPos.length); tURu0`](
for(int i=0;i<nStartPos.length;i++) u
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{ ]J1dt N=
// output.writeLong(nPos); qzYwt]GNS
output.writeLong(fileSplitterFetch.nStartPos); "3X2VFwoJ
output.writeLong(fileSplitterFetch.nEndPos); ^h(ew1:
} R6` WN
output.close(); hE-h`'ha`
} N H[kNi'
catch(IOException e){e.printStackTrace ();} iw3FA4{(
catch(Exception e){e.printStackTrace ();} ef8s<5"4
} 4`4kfiS$
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//读取保存的下载信息(文件指针位置) /Wi[OT14
private void read_nPos() iN bIp"W
{ D#_3^Kiawj
try{ !{ y@od@T
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 4GkWRu1
int nCount = input.readInt(); GSoX<*i
nStartPos = new long[nCount]; 8v:T.o;<
nEndPos = new long[nCount]; `LrHKb
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for(int i=0;i<nStartPos.length;i++) Y4J3-wK5
{ 1$xNUsD2
nStartPos = input.readLong(); >@U*~Nz
nEndPos = input.readLong(); qrb[-|ie&
} iW)8j 8
input.close(); Q)~aiI0
} x)
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catch(IOException e){e.printStackTrace ();} AuvkecuIh
catch(Exception e){e.printStackTrace ();} ayn) 5q/z
} ^%d\qd`
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private void processErrorCode(int nErrorCode) h){0rX@:&
{ ?qmRbDI
System.err.println("Error Code : " + nErrorCode); =J18eH!]
} '*Z1tDFS
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//停止文件下载 J!AgBF N4
public void siteStop() TtJH7
{ TYy?KG>:'
bStop = true; +vw\y
for(int i=0;i<nStartPos.length;i++) .8 2P(}h
fileSplitterFetch.splitterStop(); |h KDvH
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} r7RIRg_
} 8^kGS-+^
//负责部分文件的抓取 /,BD#|
**FileSplitterFetch.java L 8c0lx}Nn
*/ mu\6z_e
package NetFox; kVuUjP6(c
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import java.io.*; Ja|5 @
import java.net.*; |O{m2Fi
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public class FileSplitterFetch extends Thread { !`M,XSp(
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String sURL; //File URL 1m'k|Ka
long nStartPos; //File Snippet Start Position GiJ *Wp
long nEndPos; //File Snippet End Position nB_?ckj,
int nThreadID; //Thread's ID *zaQx+L
boolean bDownOver = false; //Downing is over ?3/qz(bM
boolean bStop = false; //Stop identical R]JT&p|w.1
FileAccessI fileAccessI = null; //File Access interface l?\jB\,
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException DKH-Q(M56
{ 0^v`T%|fTX
this.sURL = sURL; ,xw#NG6
this.nStartPos = nStart; Mhm@R@
this.nEndPos = nEnd; ;RH;OE,A
nThreadID = id;
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 *~2,/D
} 5v[*:0p'
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public void run() '%>=ZhO
{ #./fY;:cj
while(nStartPos < nEndPos && !bStop) {WJ m
{ M
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try{ Y`KqEjsC*
URL url = new URL(sURL); s'3
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); pk>^?MO
httpConnection.setRequestProperty("User-Agent","NetFox"); ,1hxw<sNR
String sProperty = "bytes="+nStartPos+"-"; )"qa kT
httpConnection.setRequestProperty("RANGE",sProperty); [.K1iZyTi
Utility.log(sProperty); NxfOF
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} FE>|1
InputStream input = httpConnection.getInputStream(); 9/9j+5}+
//logResponseHead(httpConnection); GL&y@6
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byte[] b = new byte[1024]; PoNi"Pv
int nRead; S2E8Gq9
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) rDl*d`He!
{ XWnVgY s
nStartPos += fileAccessI.write(b,0,nRead); A4Ru g\p]
//if(nThreadID == 1) ?llXd4
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); r`$OO,W
} vjLJinJ/
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Utility.log("Thread " + nThreadID + " is over!"); vx\r!]
bDownOver = true; ) g0%{dfJ
//nPos = fileAccessI.write (b,0,nRead); oVnvO iAc
} )S3\,S-.
catch(Exception e){e.printStackTrace ();} ;
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} hZdoc<
} Y1L[;)H n
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//打印回应的头信息 R$v[!A+:'
public void logResponseHead(HttpURLConnection con) 2iHUZzz\
{ v>:Ur}u!D
for(int i=1;;i++) ~Io7]
{ *lYVY)L
String header=con.getHeaderFieldKey(i); ^pxX]G]
if(header!=null) v5/~-uRL%
//responseHeaders.put(header,httpConnection.getHeaderField(header)); ~Uj=^leYO
Utility.log(header+" : "+con.getHeaderField(header)); d+<G1w&