/* s|:j~>53
**SiteFileFetch.java _znn `_N:v
*/ AC?a:{./
package NetFox; Y5mk*Q#q
import java.io.*; 97}l`z;Z
import java.net.*; !}"P Hby5N
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public class SiteFileFetch extends Thread { 5N2`e3:I
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SiteInfoBean siteInfoBean = null; //文件信息Bean ~yRKNH*M
long[] nStartPos; //开始位置 J
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long[] nEndPos; //结束位置
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 U\"FYTC
long nFileLength; //文件长度 S\2@~*{-8
boolean bFirst = true; //是否第一次取文件 j>hBNz
boolean bStop = false; //停止标志 *OY
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File tmpFile; //文件下载的临时信息 xl(R|D))
DataOutputStream output; //输出到文件的输出流 u&o<>d;)
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) [XNDYaF8
public SiteFileFetch(SiteInfoBean bean) throws IOException AIM<mU
{ 0T:U(5Y9
siteInfoBean = bean; A] f^9F@
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ev5m(wR
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); $
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if(tmpFile.exists ()) s`dUie}y<
{ R, UYwI
bFirst = false; @u-CR8^
read_nPos(); !z+'mF?V+X
} 42PA?^xPw
else CYhSCT!-?
{ KzZRFEA_
nStartPos = new long[bean.getNSplitter()]; D[K!xq
nEndPos = new long[bean.getNSplitter()]; rJCu6
} L\t?^u
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public void run() BvpUcICJ
{ >q1rdq
//获得文件长度 %VO>6iVn
//分割文件 #>">fs]
//实例FileSplitterFetch ,y[w`Q\
//启动FileSplitterFetch线程 k6|/ ik9C
//等待子线程返回 Vx=tP.BO]
try{ 6oq/\D$6~
if(bFirst) A7GWU{i
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nFileLength = getFileSize(); $gaGaB
if(nFileLength == -1) 7_ 5-gtD
{ HurF4IsHk
System.err.println("File Length is not known!"); Zy^ wS1io
} qGECw#
else if(nFileLength == -2) }?,Eb~q
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System.err.println("File is not access!"); 1<pb=H
} D#d
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else 7m;<b$
{ O7zj8
for(int i=0;i<nStartPos.length;i++) IMHt#M`
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); KzLkT7,y+
} 0Q:l,\lY
for(int i=0;i<nEndPos.length-1;i++) =nG>aAG
{ \m~Oaf;$
nEndPos = nStartPos[i+1]; ?2Sm
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} \_t[\&.a}
nEndPos[nEndPos.length-1] = nFileLength; .-.b:gdO(
} /3qKsv#
} (bGk=q=M
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//启动子线程 UkM#uKr:
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; kC/An@J^#
for(int i=0;i<nStartPos.length;i++) T)Pr%kF
{ 7J5Yzu)D
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), J''lOj(@
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), rVDOco+w
nStartPos,nEndPos,i); zKNac[:
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); F|?}r3{aJ
fileSplitterFetch.start(); UMlvu?u2p1
} lO8GnkLE
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), jluv}*If
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); rnM C[
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 7O'u5N
nEndPos = " + nFileLength); rh6 e
// fileSplitterFetch[nPos.length-1].start(); Ft?Yc 5
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//等待子线程结束 !+n'0{
//int count = 0; 9oj0X>| 1
//是否结束while循环 Bn*QT:SKC
boolean breakWhile = false; ->J5|c#
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while(!bStop) a#+;BH1
{ @ [j%V ynf
write_nPos(); HK`r9frn
Utility.sleep(500); 8n/[oDc]
breakWhile = true; jN!sLW
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for(int i=0;i<nStartPos.length;i++) `i6q\-12n
{ #QiNSS
if(!fileSplitterFetch.bDownOver) Fhs/<w-
{ "QM2YJ55m`
breakWhile = false;
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break; PH=O>a`a_O
} Hh &s.ja
} z"V`8D
if(breakWhile) 1c:/c|shQ_
break; JUTlJyx8
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//count++; 9oVprd>%@
//if(count>4) K(_8oB784
// siteStop(); ]O&yy{yYK
} j +Ro?
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System.err.println("文件下载结束!"); ^fti<Lw5
} c1g'l.XL
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catch(Exception e){e.printStackTrace ();} M>@PRb:Oc
} U6~79Hnt
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//获得文件长度 NeniQeR
public long getFileSize() {$v>3FG
{ Y2(,E e2
int nFileLength = -1; x24&mWgU
try{ *TYOsD**9
URL url = new URL(siteInfoBean.getSSiteURL()); I6[=tB
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); _j|U>s
httpConnection.setRequestProperty("User-Agent","NetFox"); 8lF:70wia
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int responseCode=httpConnection.getResponseCode(); Lg+cHaA
if(responseCode>=400) u$+nl~p[&
{ R3E|seR
processErrorCode(responseCode); +}NQ|y V
return -2; //-2 represent access is error USbFUHdDc
} M/jdMfU
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String sHeader; >@q4Uez
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for(int i=1;;i++) sKDL=c;?j
{ MMf_
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); }1Pv6L(o)
//Utility.log(in.readLine()); ,w7ZsI4:[
sHeader=httpConnection.getHeaderFieldKey(i); _ Zzne
if(sHeader!=null) Q=#!wWVP
{ h($Jo
if(sHeader.equals("Content-Length")) `
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ?^{Ey[)'(
break; (h%xqXs
} ou[Wz{
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else 3y-P-NI~=
break; =+VI{~.|}
} |=EwZmj-c
} u1/q8'RW
catch(IOException e){e.printStackTrace ();} pcPRkYT[M
catch(Exception e){e.printStackTrace ();} j4Y] 8
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Utility.log(nFileLength); ~JohcU}d
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return nFileLength; RBOhV/f
} =B
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//保存下载信息(文件指针位置) T$s )aM
private void write_nPos() n16TQe"8
{ ;Yn_*M/*
try{ gOm%?sg
output = new DataOutputStream(new FileOutputStream(tmpFile)); U<U?&hB\@
output.writeInt(nStartPos.length); a,\GOy(q{
for(int i=0;i<nStartPos.length;i++) 7dXh,sD
{ hVu~[ 'Me
// output.writeLong(nPos); R!7a;J}
output.writeLong(fileSplitterFetch.nStartPos); zl["}I(*n
output.writeLong(fileSplitterFetch.nEndPos); ]`eJSk.
} dhI+_z
output.close(); x DX_s:A
} u
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catch(IOException e){e.printStackTrace ();} rOXh?r
catch(Exception e){e.printStackTrace ();} $q$\
} 60%EmX
;
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//读取保存的下载信息(文件指针位置) QlWkK.<Z3_
private void read_nPos() 1Yy*G-7}
{ 5fud:k
try{ ]\oE}7K%r
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); T!gq
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int nCount = input.readInt(); }o9(Q8
nStartPos = new long[nCount]; Y# ?M%I%j
nEndPos = new long[nCount]; 1A/li%
for(int i=0;i<nStartPos.length;i++) KS(Ms*k;'
{ F`
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nStartPos = input.readLong(); 0+"P1/
nEndPos = input.readLong(); s&Qil07Vl
} >)S'`e4Gu
input.close(); )lB*]
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} wvg>SfV,e
catch(IOException e){e.printStackTrace ();} B<?fD
catch(Exception e){e.printStackTrace ();} S[oRq
} 407;M%?'A
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private void processErrorCode(int nErrorCode) [[d@P%X&
{ "Kt[jV;6
System.err.println("Error Code : " + nErrorCode); &|)
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} YM]ZL,8
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//停止文件下载 Y4n;[nHQ(
public void siteStop() NI%
()
{ oi}\;TG
bStop = true; D1<$]r,
for(int i=0;i<nStartPos.length;i++) b-,]21
fileSplitterFetch.splitterStop(); k84JDPu#
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} @Xe[5T
} Ok2>%e
//负责部分文件的抓取 p&ml$N9fd
**FileSplitterFetch.java ;R.l?Bg
*/ #3act)m
package NetFox; JK9}Kb};
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import java.io.*; k,nRC~Irh
import java.net.*; ,zY!EHpx
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public class FileSplitterFetch extends Thread { d>qxaX;
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String sURL; //File URL mf)o1O&B
long nStartPos; //File Snippet Start Position U4@W{P02
long nEndPos; //File Snippet End Position \aG:l.IM0
int nThreadID; //Thread's ID wFJ?u?b0Q
boolean bDownOver = false; //Downing is over `Dco!ih
boolean bStop = false; //Stop identical /N&)r wc
FileAccessI fileAccessI = null; //File Access interface 13nXvYo'
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 9
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{ *0`oFTJ
this.sURL = sURL; Z{ A)
this.nStartPos = nStart; " '/$ZpY
this.nEndPos = nEnd; 0UB,EI8
nThreadID = id; Fhn=}7|4q
fileAccessI = new FileAccessI(sName,nStartPos);//定位 d?/?VooU
} ?Q)z5i'g#
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public void run() 6*<=(SQI
{ Z)zWfv}
while(nStartPos < nEndPos && !bStop) iPxhDn<B
{ .hxcx>%
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try{ Z;{3RWV
URL url = new URL(sURL); N'nqVYTU
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Sh=Px9'i
httpConnection.setRequestProperty("User-Agent","NetFox"); I%NPc4p
String sProperty = "bytes="+nStartPos+"-"; ,HxsU,xiG
httpConnection.setRequestProperty("RANGE",sProperty); I9`R LSn
Utility.log(sProperty); btK| U
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InputStream input = httpConnection.getInputStream(); o AkF
//logResponseHead(httpConnection); j3bTa|UdT
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byte[] b = new byte[1024]; -T4{PM
int nRead; AT:T%a:G?
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) p0xd
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nStartPos += fileAccessI.write(b,0,nRead); 7RmL#f`
//if(nThreadID == 1) d]OoJK9&&
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); VJX{2$L
} g<