/* B;4hI?
**SiteFileFetch.java i051qpj
*/ qA9*t
package NetFox; nhk +9
import java.io.*; (~-q}_G;Q
import java.net.*; o]n5pZ\\W<
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public class SiteFileFetch extends Thread { !IoD";Oi
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SiteInfoBean siteInfoBean = null; //文件信息Bean OW)8Z60
long[] nStartPos; //开始位置 `h$6MFC/g
long[] nEndPos; //结束位置 |F<U;xV$p
FileSplitterFetch[] fileSplitterFetch; //子线程对象 OI %v>ns
long nFileLength; //文件长度 [HF)d#A
boolean bFirst = true; //是否第一次取文件 A42At]
boolean bStop = false; //停止标志 mfG|K@ODM-
File tmpFile; //文件下载的临时信息 5
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DataOutputStream output; //输出到文件的输出流 tRbZ^5x\@
.^@+$}
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) po=*%Zs*T
public SiteFileFetch(SiteInfoBean bean) throws IOException tl ;?/
{ ,~K_rNNZ
siteInfoBean = bean; (4ow0}1
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); A40 -])'!
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ,-] JCcH
if(tmpFile.exists ()) =6
{ v8*ZwF
bFirst = false; +hjc~|RK
read_nPos(); >ID 3oi
} ui9gt"qS`
else 8H;TPa
{ 2#/ KS^
nStartPos = new long[bean.getNSplitter()]; z@~1e]%
nEndPos = new long[bean.getNSplitter()]; \vQ_:-A
} M*c\=(
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} J\;~(:
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public void run() {B\.8)&8
{ OPKX&)SE-
//获得文件长度 =PZs'K
//分割文件 X]1ep
//实例FileSplitterFetch @~63%6r#4M
//启动FileSplitterFetch线程 ,{oP`4\Lm
//等待子线程返回 L~mL9[( ,
try{ xVl90ak
if(bFirst) x,7axx6
{ :A[bqRqe
nFileLength = getFileSize(); DdSUB
if(nFileLength == -1) jNIM1_JjD
{ ]iz5VI@
System.err.println("File Length is not known!"); yv'rJI~ Ps
} P?0b-Qr$a
else if(nFileLength == -2) 3_ zI$Z
{ pp{);
System.err.println("File is not access!"); zJ9,iJyuD
} e.HN%LrhS
else lA]u8+gXd
{ vfy-;R(
for(int i=0;i<nStartPos.length;i++) C*78ZwZ
{ )(ma
nStartPos = (long)(i*(nFileLength/nStartPos.length)); hh8UKEM-
} huq6rA/i
for(int i=0;i<nEndPos.length-1;i++) '[juPI(!
{ S3J6P2P
nEndPos = nStartPos[i+1]; !^m5by
} NK4ven7/
nEndPos[nEndPos.length-1] = nFileLength; #g|j;{P
} C/cGr)|8%
} *e8V4P
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//启动子线程 =}q4ked/
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ivagS\Q
for(int i=0;i<nStartPos.length;i++) 1L9^N
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), e6_.ID'3
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), /f6]XP\'`+
nStartPos,nEndPos,i); q2f/#"k
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); YT3QwN9
fileSplitterFetch.start(); @qe>ph[UA
} O.4"h4{'
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Dr2h-
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); b1&{%.3[
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", b\+|g9Tm
nEndPos = " + nFileLength); AnyFg)a<
// fileSplitterFetch[nPos.length-1].start(); &6:,2W&s
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//等待子线程结束 UMX+h])#N
//int count = 0; pts}?
//是否结束while循环 000$ZsW?
boolean breakWhile = false; Xo*$|9[.
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while(!bStop) ]_=HC5"
{ "TV.$s$.
write_nPos(); C0fA3y72
Utility.sleep(500); XVLuhwi
breakWhile = true; kg61Dgu
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for(int i=0;i<nStartPos.length;i++) YH[_0!JY^
{ X
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if(!fileSplitterFetch.bDownOver) Dsua13 hF
{ R] [M_ r
breakWhile = false; q7]WR(e
break; [.I,B tY+
} '?>eW2d
} VoyH:
if(breakWhile) '; dW'Uwc
break; 8k1r|s@d
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//count++; oU@ljSD
//if(count>4) mce`1Tjw
// siteStop(); iy#OmI>j
} X@:fW @
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System.err.println("文件下载结束!"); )ra66E
} xI4I1"/
catch(Exception e){e.printStackTrace ();} D+)=bPMe
} by
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//获得文件长度 U>+~.|'V9
public long getFileSize() 4ufLP DH
{ BXo|CITso
int nFileLength = -1; Doh|G:P]#
try{ 05KoxFO?
URL url = new URL(siteInfoBean.getSSiteURL()); 9f^PR|F
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); mVK 9NK
httpConnection.setRequestProperty("User-Agent","NetFox"); bQy%$7UmX,
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int responseCode=httpConnection.getResponseCode(); D' `"_
if(responseCode>=400) M#cr*%
{ uK:-g,;
processErrorCode(responseCode); NoO+xLHw8
return -2; //-2 represent access is error D w=Z_+J
} daIL> c"
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String sHeader; +qj*P9
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for(int i=1;;i++) 3Y{)(%I
{ 5g1M_8e'+
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); v$m[#&O^V?
//Utility.log(in.readLine()); aoDD&JE
sHeader=httpConnection.getHeaderFieldKey(i); %i-lx`U
if(sHeader!=null) N+M&d3H`
{ `SjD/vNE
if(sHeader.equals("Content-Length")) )6>|bmpU
{ WYC1rfd=
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); WjrMd#^
break; sk
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} |R;l5ZKvV
} aGe(vQPi9
else U>_IYT
break; k9)u3
} G|-\T(&J
} #t@x6Vt
catch(IOException e){e.printStackTrace ();} )J+{oB[>b
catch(Exception e){e.printStackTrace ();} r)p2'+}pV
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Utility.log(nFileLength); &'(a$S>v
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return nFileLength; #$=8g
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} a_{io`h3&
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//保存下载信息(文件指针位置) ;tp]^iB#
private void write_nPos() :4ja@~
{ OK-sT7But
try{ WQ[}&kY~
output = new DataOutputStream(new FileOutputStream(tmpFile)); !ww:O| 0
output.writeInt(nStartPos.length); @VC .>
for(int i=0;i<nStartPos.length;i++) +9zJlL^A%
{ DB`$Ru@
// output.writeLong(nPos); n @&"+
output.writeLong(fileSplitterFetch.nStartPos); d&|z=%9xl
output.writeLong(fileSplitterFetch.nEndPos); _ktK+8*6`
} %j'G.*TD
output.close(); S jVsF1d_
} VYamskK[G:
catch(IOException e){e.printStackTrace ();} 1Xy8|OFc[
catch(Exception e){e.printStackTrace ();} NoCDY2 $
} rQ~ \~g[tP
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//读取保存的下载信息(文件指针位置) d4Co^A&
private void read_nPos() <<=e9Lh
{ YV/>8*i
try{ erx5j\
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 4\LZD{
int nCount = input.readInt(); /&PKCtm&~
nStartPos = new long[nCount]; %G;0T;0L
nEndPos = new long[nCount]; 4_PCqEp)
for(int i=0;i<nStartPos.length;i++) BBHK
{ 8Y2 xW`
nStartPos = input.readLong(); B7!<{i
nEndPos = input.readLong(); #D+7TWDwNt
} Z_H?WGO
input.close(); #`W=mN(+k
} @j O4EEe:
catch(IOException e){e.printStackTrace ();} M|\^UF2e
catch(Exception e){e.printStackTrace ();} ,E\h !/X
} lVPOYl%
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private void processErrorCode(int nErrorCode)
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{ ?4XnEDAm
System.err.println("Error Code : " + nErrorCode); 9O;cJ)tXY
} '|A|vCRCG
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[r)eP({
//停止文件下载 N]NF\7(
public void siteStop() {esJ=FV\
{ +nZUL*Ut/
bStop = true; LL&ud_Y
for(int i=0;i<nStartPos.length;i++) *5_V*v6
fileSplitterFetch.splitterStop(); "~F3*lk#E
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} ^/HW$8wEi
} lVz9k
//负责部分文件的抓取 YEv%C|l
**FileSplitterFetch.java o*">KqU`b
*/ iPq &Y*
package NetFox; : [q0S@
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import java.io.*; Mp~y0e
import java.net.*; ?38lHn`FyQ
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public class FileSplitterFetch extends Thread { >I}9LyZt
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String sURL; //File URL :4:N f
long nStartPos; //File Snippet Start Position `:eU.
long nEndPos; //File Snippet End Position X&M4MuL
int nThreadID; //Thread's ID 'fx UV<K&
boolean bDownOver = false; //Downing is over sV/l5]b]
boolean bStop = false; //Stop identical u7fK1 ^O
FileAccessI fileAccessI = null; //File Access interface "9IYB)Js
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Q8D&tJg
{ hA}~es=c
this.sURL = sURL; VA] e
this.nStartPos = nStart; !ErH~<f%K
this.nEndPos = nEnd; AH#4wPxF
nThreadID = id; ]5Qy
fileAccessI = new FileAccessI(sName,nStartPos);//定位 POAw M
} Os&n
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public void run() &Lm-()wb
{ ^03j8Pc-c
while(nStartPos < nEndPos && !bStop) K4Sk+
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{ HOoPrB m
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try{ "{D6J809
URL url = new URL(sURL); ritBU:6
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); %FZ2xyI.
httpConnection.setRequestProperty("User-Agent","NetFox"); 1x)ZB~L
String sProperty = "bytes="+nStartPos+"-"; ({s6eqMhDd
httpConnection.setRequestProperty("RANGE",sProperty); *\}}Bv+9
Utility.log(sProperty); 80b;I|-T,
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InputStream input = httpConnection.getInputStream(); QaIjLc~W
//logResponseHead(httpConnection); *N'K/36;
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byte[] b = new byte[1024]; : _e#
int nRead; Y;4!i?el
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 6W[}$#w
{ XfPFo6
nStartPos += fileAccessI.write(b,0,nRead); kOOGw:/
//if(nThreadID == 1) fyTAou6hI
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); in+}/mwfC
} zGKyN@o
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Utility.log("Thread " + nThreadID + " is over!"); 3@+b}9s8
bDownOver = true; ca i<,3H
//nPos = fileAccessI.write (b,0,nRead); >r`b_K
} L`f^y;Y.
catch(Exception e){e.printStackTrace ();} Y8M]Lwj
} CTX9zrY*T
} T|J9cgtS
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//打印回应的头信息 vgY3L
public void logResponseHead(HttpURLConnection con) d->|EJP
{ .2d9?p3Y
for(int i=1;;i++) X%z }VA
{ 8fA_p}wp
String header=con.getHeaderFieldKey(i); !cKz7?w
if(header!=null) ?
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//responseHeaders.put(header,httpConnection.getHeaderField(header)); CYOI.#m2
Utility.log(header+" : "+con.getHeaderField(header)); P96pm6H_;
else X%yO5c\l2
break; V5+SWXZ
} l/;X?g5+
} mF` B#
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public void splitterStop() r0p w_j
{ /Mb"V5S(W
bStop = true; OL4z%mDZi
} *s@Qtgu
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} Gy=B&bo