/* J`*iZvW#Bx
**SiteFileFetch.java lHB) b}7E
*/ QjPj[c
package NetFox; $t-n'Qh^2
import java.io.*; jtm?z c
import java.net.*; ]8;n{ }X
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public class SiteFileFetch extends Thread { /VHi>
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SiteInfoBean siteInfoBean = null; //文件信息Bean bY~@}gC**@
long[] nStartPos; //开始位置 rx :z#"?I
long[] nEndPos; //结束位置 )$Z(|M4
FileSplitterFetch[] fileSplitterFetch; //子线程对象 P;]F=m+*V
long nFileLength; //文件长度 [hRU&z;W
boolean bFirst = true; //是否第一次取文件 :!zC"d9@
boolean bStop = false; //停止标志 Vc3mp;6"
File tmpFile; //文件下载的临时信息 gX5&d\y
DataOutputStream output; //输出到文件的输出流 s:y
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) rp7W
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public SiteFileFetch(SiteInfoBean bean) throws IOException VzlDHpG
{ K^t?gt@k}
siteInfoBean = bean; +' oX
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); IK^~X{I?
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 7L:7/
if(tmpFile.exists ()) insY(.N
{ +[. Yy
bFirst = false; W}'WA
read_nPos(); ?nKF6f
} /\Q*MLwD
else =wq;@' U
{ B
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nStartPos = new long[bean.getNSplitter()]; cyd~2\Kv~
nEndPos = new long[bean.getNSplitter()]; qO`qJ/
} C0x"pO7
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} %zo=
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public void run() 4-v6=gz.
{ 1QJBb \
//获得文件长度 7k=fZ$+O
//分割文件 !#? kWAU
//实例FileSplitterFetch J0220 _
//启动FileSplitterFetch线程 8rbG*6
//等待子线程返回 ;Pb8YvG1$
try{ K\Eo z]?
if(bFirst) {b!7
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{ qS8B##x+=
nFileLength = getFileSize(); w>~M}Ahj
if(nFileLength == -1) 8)0L2KL'
{ l*7?Y7FK
System.err.println("File Length is not known!"); +'03>!V
} J7i+c];!<
else if(nFileLength == -2) g.Hio.fVd
{ :wgfW .w
System.err.println("File is not access!"); tjv\)Nn'
} Q* O<@
else v@u<Ww;=@
{ ~S(^T9R
for(int i=0;i<nStartPos.length;i++) mgkyC5)d
{ V{Q kN7-
nStartPos = (long)(i*(nFileLength/nStartPos.length)); NyPd5m:
} }C(5 -7
for(int i=0;i<nEndPos.length-1;i++) "<l<&
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{ G5'_a$
nEndPos = nStartPos[i+1]; W."f8ow
} fUcLfnr
nEndPos[nEndPos.length-1] = nFileLength; &:#m&,tQ
} WtX>Qu|
} oO=o|w|T
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//启动子线程 b1!@v+
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; O]nT>;PXX
for(int i=0;i<nStartPos.length;i++) RIhOR8)
{ jQtSwVDr
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :%tuNJjj
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), F,v7ifo#f
nStartPos,nEndPos,i); Bh` IXu
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); R,Ml&4pZ}
fileSplitterFetch.start(); if~rp-\P
} 68x}w
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), MTmO>V&O
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); qa!RH]B3
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ^9ng)
nEndPos = " + nFileLength); 2@MN]Low
// fileSplitterFetch[nPos.length-1].start(); 7U:=~7GH
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//等待子线程结束 kX8=cL9G
//int count = 0; =,Ttw>
//是否结束while循环 Y%IJ8P^Y
boolean breakWhile = false; ~b8a^6:R"
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while(!bStop) NJ$e6$g)
{ koH4~m{
write_nPos(); %D^bahf
Utility.sleep(500); .C5@QKU
breakWhile = true; T"W9YpZ
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for(int i=0;i<nStartPos.length;i++) 4r*Pa(;y
{ 6ojo##j
if(!fileSplitterFetch.bDownOver) W/v|8-gcK
{ `s}BXKIv}
breakWhile = false; k|#Zy,
break; #?m{YT{P
} aJ2H.E
} wD=am
if(breakWhile) R$xY8+}V
break; P^(.tr3t
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//count++; o>!JrH
//if(count>4) N5\{yV21",
// siteStop(); $Q4=37H+
} nW&$~d
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System.err.println("文件下载结束!"); .&(8(C
} 4e/cqN6
catch(Exception e){e.printStackTrace ();} 2v\W1VF
} 9Dq.lr^
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//获得文件长度 2f`xHI/@fj
public long getFileSize() `Qq/F]
{ s]bPV,"p
int nFileLength = -1; X2P``YFV{
try{ {_as!5l
URL url = new URL(siteInfoBean.getSSiteURL()); bm6hZA|
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Bbs5f@E
httpConnection.setRequestProperty("User-Agent","NetFox"); f+^c@0que
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int responseCode=httpConnection.getResponseCode(); =kO@ Gk?
if(responseCode>=400) =phiD&=
{ fKYKW?g;)Z
processErrorCode(responseCode); H PTHF
return -2; //-2 represent access is error Y^5"qd|`
} x-4J/tm
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String sHeader; Yhk6Uog{4
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for(int i=1;;i++) 1g81S_T
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{ 6puVw-X
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); z'e1"Y.
//Utility.log(in.readLine()); O3&|}:<
sHeader=httpConnection.getHeaderFieldKey(i); S[.5n]
if(sHeader!=null) TnxU/)
{ i^/DiWdyf
if(sHeader.equals("Content-Length")) .h!9wGi`
{ r?afv.@L2
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); <>&89E%j'
break; z0;9SZ9
} 4)E|&)-fu8
} }8
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else uegb;m
break; @LHtt/&
} F_ _H(}d
} ?KCxrzf
catch(IOException e){e.printStackTrace ();} x57'Cg \
catch(Exception e){e.printStackTrace ();} -sx-7LKi
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Utility.log(nFileLength); s8yCC#H"
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return nFileLength; |zb`&tv}
}
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//保存下载信息(文件指针位置) Jtpa@!M
private void write_nPos() \ bC}&Iz6
{ n)Hk8)^8
try{ RAdvIIQp:
output = new DataOutputStream(new FileOutputStream(tmpFile)); GA7u5D"0
output.writeInt(nStartPos.length); ^xmZ|f-
for(int i=0;i<nStartPos.length;i++) at=D&oy4"+
{ ?U$}Rsk{#
// output.writeLong(nPos); Xv8fPP(
output.writeLong(fileSplitterFetch.nStartPos); uH0#rgKt
output.writeLong(fileSplitterFetch.nEndPos); E2-ojL[6
} U* 4{"
output.close(); &1oaZY w
} >]^>gUmq
catch(IOException e){e.printStackTrace ();} Io09W ^
catch(Exception e){e.printStackTrace ();} 9ec0^T
} E+:.IuXW$
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//读取保存的下载信息(文件指针位置) `)LIVi"(D
private void read_nPos() /XjN%|
{ 7<fL[2-
try{ mQFa/7FX
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); :mzCeX8 *
int nCount = input.readInt(); Cv0&prt
nStartPos = new long[nCount]; QZ?O;K1|y
nEndPos = new long[nCount]; '+tKvTU;
for(int i=0;i<nStartPos.length;i++) HqB|SWyK
{ i+U@\:=
nStartPos = input.readLong(); Ko@zk<~"[
nEndPos = input.readLong(); +tPx0>p;
} }z8{B3K
input.close(); B,w:DX
} Tln9q0"W
catch(IOException e){e.printStackTrace ();} w<v1N
catch(Exception e){e.printStackTrace ();} 3.B4(9:>,
} ]v<d0"2
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private void processErrorCode(int nErrorCode) #"|"cYi,
{ S!u6dz^[$X
System.err.println("Error Code : " + nErrorCode);
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} ip<15;Z
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//停止文件下载 e21E_exM0
public void siteStop() &3jBE--
{ Lf[G>0t&n
bStop = true; VjC*(6<Gj
for(int i=0;i<nStartPos.length;i++) te4F"SEf
fileSplitterFetch.splitterStop(); /A0 [_
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} .MzOLv
} mu 2
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//负责部分文件的抓取 -mE
**FileSplitterFetch.java @Q/x&BV
*/ ?e"Wu+q~L
package NetFox; \I'f3
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import java.io.*; (s5<
import java.net.*; >6*(}L9
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public class FileSplitterFetch extends Thread { pk;ff q@
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String sURL; //File URL X\o/i\ C}
long nStartPos; //File Snippet Start Position -J-3_9I
long nEndPos; //File Snippet End Position }DJ|9D^yf
int nThreadID; //Thread's ID VfQMFb',o
boolean bDownOver = false; //Downing is over hTlnw[I
boolean bStop = false; //Stop identical _)OA$
FileAccessI fileAccessI = null; //File Access interface (y-x01H
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException SPfD2%jjC
{ &oon'q5;
this.sURL = sURL; /'R UA
this.nStartPos = nStart; DZ%g^DRZX
this.nEndPos = nEnd; LvSP #$f
nThreadID = id; b`(yu.{Jn
fileAccessI = new FileAccessI(sName,nStartPos);//定位 9`)w@-~~
} .jvSAV5B
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public void run() >{phyByI
{ NvQY7C
while(nStartPos < nEndPos && !bStop) |WD,\=J2
{ #citwMW
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try{ 9
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URL url = new URL(sURL); _F}IF9{?G
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); S4#A#a2J
httpConnection.setRequestProperty("User-Agent","NetFox"); N>uA|<b,
String sProperty = "bytes="+nStartPos+"-"; S^3g]5YX
httpConnection.setRequestProperty("RANGE",sProperty); l9M#]*{
Utility.log(sProperty); f28gE7Y\a
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InputStream input = httpConnection.getInputStream(); @ChN_gd3!
//logResponseHead(httpConnection); mXxZM;P[
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byte[] b = new byte[1024]; se<i5JsSV
int nRead; =fKhXd
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) `ENlV9
{ 7V9%)%=h|
nStartPos += fileAccessI.write(b,0,nRead); gi1}5DR
//if(nThreadID == 1) o|rGy5
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); O\|C,Epm
} K[iY{
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Utility.log("Thread " + nThreadID + " is over!"); Q\&AlV
bDownOver = true; ki[;ZmQqY
//nPos = fileAccessI.write (b,0,nRead); +Fu@I{"A
} ]%NO"HzF~
catch(Exception e){e.printStackTrace ();} NYSj^k;^(z
} -IpV'%nX;
}
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//打印回应的头信息 _9}x2uO~
public void logResponseHead(HttpURLConnection con) m NUN6qVP~
{ LU-#=1Q
for(int i=1;;i++) qP7&Lt