/* 0V!l,pg
**SiteFileFetch.java kMsnW}Nu
*/ mB\C?=_
package NetFox; 36n>jS&
import java.io.*; Jx=hJ-FY
import java.net.*; X%9*O[6{
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public class SiteFileFetch extends Thread { O''y>N9
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SiteInfoBean siteInfoBean = null; //文件信息Bean 'YSuQP>
long[] nStartPos; //开始位置 s4T}Bsr
long[] nEndPos; //结束位置 Dmdy=&G
FileSplitterFetch[] fileSplitterFetch; //子线程对象 uM(UO,X
long nFileLength; //文件长度 Cpx+qQt0
boolean bFirst = true; //是否第一次取文件 xU9@$am
boolean bStop = false; //停止标志 5 ZfP
File tmpFile; //文件下载的临时信息 o!&WsD
DataOutputStream output; //输出到文件的输出流
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) .+K
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public SiteFileFetch(SiteInfoBean bean) throws IOException 8)0L2KL'
{ 0&fl#]oCE
siteInfoBean = bean; `3iQZui
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ?Hy+'sq[
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); eK`PxoTI-I
if(tmpFile.exists ()) 3 EYiQ`
{ M2T| "Q"=
bFirst = false; {8NwFN.
read_nPos(); M1u{A^d.Z
} m s~8QL
else 'dt\db5p
{ aU<s<2O)
nStartPos = new long[bean.getNSplitter()]; =3ADT$YHd
nEndPos = new long[bean.getNSplitter()]; BgRZ<B`
} uMFV%+I
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} QB1M3b
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public void run() k90B!kg
{ g"y?nF.&F
//获得文件长度 Hq
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//分割文件 Y%IJ8P^Y
//实例FileSplitterFetch ')nnWlK
//启动FileSplitterFetch线程 8wF#e\Va0
//等待子线程返回 _+zVpZ
try{ 2a[9h#
if(bFirst) GNghB(
{ H~m]nV,r
nFileLength = getFileSize(); f9']
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if(nFileLength == -1) !Z/$}xxj
{ #?m{YT{P
System.err.println("File Length is not known!"); @}eNV~ROu
} 5\G)Q<A]*L
else if(nFileLength == -2) KO-a; [/
{ ~hD{coVTI
System.err.println("File is not access!"); T}2:.Hk:N
} ^K*-G@B
else rv?!y8\
{ ^/{4'\p
for(int i=0;i<nStartPos.length;i++) dzxI QlP
{ Mdky^;qq3;
nStartPos = (long)(i*(nFileLength/nStartPos.length)); CZfE
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} %O /d4
for(int i=0;i<nEndPos.length-1;i++) RHXvee55
{ {]M>Y%j48
nEndPos = nStartPos[i+1]; Ws>i)6[
} <_f`$z
nEndPos[nEndPos.length-1] = nFileLength; uRGB/ju^E
} \-G5l+!
} O*4gV }:G
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//启动子线程 .~22^k
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; )rbc;{.
for(int i=0;i<nStartPos.length;i++) zf7rF}
{ TnxU/)
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 44<v9uSK
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), E -
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nStartPos,nEndPos,i); <>&89E%j'
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); [>wzl"cHW
fileSplitterFetch.start(); b_l.QKk
} uegb;m
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), =<>pKQ)[
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); `%%?zgY
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", aulaX/'-_
nEndPos = " + nFileLength); <%/:w/
// fileSplitterFetch[nPos.length-1].start(); gTuX *7w
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//等待子线程结束
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//int count = 0; LEA;dSf
//是否结束while循环 H}(=?}+
boolean breakWhile = false; dJaEoF
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while(!bStop) E2-ojL[6
{ G u6[{u
write_nPos(); >|5XaaDa
Utility.sleep(500); Sr-|,\/O
breakWhile = true; |z T%$
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}]tFz}E\
for(int i=0;i<nStartPos.length;i++) $e>/?Ss
{ xa'
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if(!fileSplitterFetch.bDownOver) S\}?zlV
{ HKM~BL
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breakWhile = false; FBYll[8
break; R9bhC9NP
} $R8>u#K!
} `B:B7Cpvn
if(breakWhile) 5DmCxg
break; Ck:#1-t8{
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//count++; ^}>zYt
//if(count>4) poTl|y @
// siteStop(); zoJ_=- *s
} h=!M6yap<
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System.err.println("文件下载结束!"); pCz@(:0
} ~*jsB=XM/
catch(Exception e){e.printStackTrace ();} w:ORmR.p
} 1 ,#{X3
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//获得文件长度 ~8XX3+]z:X
public long getFileSize() tZdwy> ;
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int nFileLength = -1; pQk=x T
try{ <WZ1-
URL url = new URL(siteInfoBean.getSSiteURL()); i7i|370
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); }pbBo2
httpConnection.setRequestProperty("User-Agent","NetFox"); IOSuaLH^
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int responseCode=httpConnection.getResponseCode(); [?Mc4uT{
if(responseCode>=400) |h#DL$
{ 83{x"G3>
processErrorCode(responseCode); $
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return -2; //-2 represent access is error l81&[
} #[gcg]6c
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String sHeader; zAKq7'_=
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for(int i=1;;i++) tqff84
{ l-DGy# h+z
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ?&whE!
//Utility.log(in.readLine()); o|rGy5
sHeader=httpConnection.getHeaderFieldKey(i); K[iY{
if(sHeader!=null) \SYPu,ZT
{ &,m'sQ
if(sHeader.equals("Content-Length")) y8<lp+
{ :J=+; I(UI
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); IgzCh
break; *b$z6.
} xHM&csL
} iFAoAw(
else "-0pz\a
break; kr/1Dsr4
} "Cb.cO$i;
} e.3sAUHZ-
catch(IOException e){e.printStackTrace ();} oiTMP`Y
catch(Exception e){e.printStackTrace ();} RT.wTJS;
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Utility.log(nFileLength); >.!5M L\
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return nFileLength; +WV_`Rx#
} k$UzBxR
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//保存下载信息(文件指针位置) Rk437vQD,
private void write_nPos() `>`K7-H
{ r|JiGj^om
try{ s60:0 >
output = new DataOutputStream(new FileOutputStream(tmpFile)); :oon}_MdRd
output.writeInt(nStartPos.length); ^B&ahk
for(int i=0;i<nStartPos.length;i++) <6}f2^
{ `aO@N(
// output.writeLong(nPos); (IoPU+1b
output.writeLong(fileSplitterFetch.nStartPos); SBN_>;$c5}
output.writeLong(fileSplitterFetch.nEndPos); Sob $j
} pb/{ss+
output.close(); zP{<0o
} 5ykk11!p$
catch(IOException e){e.printStackTrace ();} 6'No4[F
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catch(Exception e){e.printStackTrace ();} fo!Lp*'0
} =7J|KoKK
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//读取保存的下载信息(文件指针位置) l_YdIUl
private void read_nPos() z2s|.M]&-D
{ (4{@oM#H6
try{ {>UMw>T[
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); o7@4=m}
int nCount = input.readInt(); -}N\REXE
nStartPos = new long[nCount]; qy42Y/8'
nEndPos = new long[nCount]; @E"+qPp.3
for(int i=0;i<nStartPos.length;i++) p^zEfLTU
{ =-Q
nStartPos = input.readLong(); #*>7X>,J
nEndPos = input.readLong(); _Okn P2E
} xV n]m9i
input.close(); =:n[{/O=
} Og;$P'U
catch(IOException e){e.printStackTrace ();} vRb(eg
catch(Exception e){e.printStackTrace ();} YnO1Lf@
} !/(}meZj
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private void processErrorCode(int nErrorCode) Vq7
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{ \w_[tPz}
System.err.println("Error Code : " + nErrorCode); r~Ubgd ]U
} ]:#$6D"
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//停止文件下载 ZXDMbMD
public void siteStop() :8L61d2(
{ ?&nz
bStop = true; 6)<o O(
for(int i=0;i<nStartPos.length;i++) \*"0wR;[K
fileSplitterFetch.splitterStop(); Fl>j5[kLZ
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} s ;Nu2aOp7
} AX Jj"hN
//负责部分文件的抓取 `/Jr8J_
**FileSplitterFetch.java v=WDs#"
*/ 0 S8{VZpy
package NetFox; ';!UJWYl
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import java.io.*; {cHTg04
import java.net.*; )4~XZt1r
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public class FileSplitterFetch extends Thread { evk
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String sURL; //File URL dM.Ow!j
long nStartPos; //File Snippet Start Position ]= D
long nEndPos; //File Snippet End Position iv`-)UsE
int nThreadID; //Thread's ID T js{
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boolean bDownOver = false; //Downing is over *hgsS~
boolean bStop = false; //Stop identical ~2;y4%K
FileAccessI fileAccessI = null; //File Access interface GDe$p;#"9g
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException $jL.TraV7
{ CA~S$H\"
this.sURL = sURL; !}m8]&
this.nStartPos = nStart; 5Z0x2jV
this.nEndPos = nEnd; x6P^IkL:
nThreadID = id; j}Mpc;XOc
fileAccessI = new FileAccessI(sName,nStartPos);//定位 cW>`Z:6{K
} TQfY%GKg(
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public void run() HM
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while(nStartPos < nEndPos && !bStop) 3c"{Wu-}
{ VAz+J
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try{ o
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URL url = new URL(sURL); RR9s%>^
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); oOvbel`;
httpConnection.setRequestProperty("User-Agent","NetFox"); \8H"lcj:
String sProperty = "bytes="+nStartPos+"-"; oOw"k*,h:S
httpConnection.setRequestProperty("RANGE",sProperty); ^`9OA`2
Utility.log(sProperty); g M.(BN
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InputStream input = httpConnection.getInputStream(); ![Y$[l
//logResponseHead(httpConnection); Yi,um-%
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byte[] b = new byte[1024]; gNBI?xs`p
int nRead; EyiM`)!5
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) !ym5'h
{ =!2
nStartPos += fileAccessI.write(b,0,nRead); l$NEx0Dffz
//if(nThreadID == 1) x-EAu3=V
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); qyC"}y-
} $~l:l[Zs
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Utility.log("Thread " + nThreadID + " is over!"); CK%W+";
bDownOver = true; :2+:(^l
//nPos = fileAccessI.write (b,0,nRead); Sx7xb]3XI"
} NH!!.Z"
catch(Exception e){e.printStackTrace ();} 'L7.a'
} @A%`\Ea%
} :>u{BG;=79
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//打印回应的头信息 ^ +G> N
public void logResponseHead(HttpURLConnection con) [VHt#JuN,
{ +yk>jx
for(int i=1;;i++) mD:!"h/
{ 4D5)<3N=d'
String header=con.getHeaderFieldKey(i); scmbDaOn
if(header!=null) S45jY=)z
//responseHeaders.put(header,httpConnection.getHeaderField(header)); v,! u{QP
Utility.log(header+" : "+con.getHeaderField(header)); +Y+kx"8
else K!j2AP3
break; n$8A"'.M
} 7>TG
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} }OZfsYPz}T
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public void splitterStop() )Lq FZ~B
{ ZzY6M"eUXD
bStop = true; x1Uj4*Au
} sj1x>
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} QGa"HG5NF
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/* _XN sDW4|
**FileAccess.java E;SFf
*//文件访问(定位,写) 3z#16*
package NetFox; QCMF_;aNI
import java.io.*; $t^`Pt*:u
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public class FileAccessI implements Serializable{ _nF_RpS
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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 <