/* YVDFcN9v
**SiteFileFetch.java ]r|oNGD)G
*/ ?hkOL$v<9}
package NetFox; n8F5z|/
import java.io.*; @
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import java.net.*; ;H~<.QW
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public class SiteFileFetch extends Thread { |SjRss:i+
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SiteInfoBean siteInfoBean = null; //文件信息Bean \_8wU'7
long[] nStartPos; //开始位置 xxu
long[] nEndPos; //结束位置 jO&*E'pk
FileSplitterFetch[] fileSplitterFetch; //子线程对象 9ET1Er{4
long nFileLength; //文件长度 0(eaVi-%D
boolean bFirst = true; //是否第一次取文件 h5@GeYda
boolean bStop = false; //停止标志 gd*Gn"
File tmpFile; //文件下载的临时信息 b@;Wh-{d
DataOutputStream output; //输出到文件的输出流 [TFJb+N&
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Q&I`uS=F
public SiteFileFetch(SiteInfoBean bean) throws IOException `nl n@ ;
{ TMj;NSc3
siteInfoBean = bean; I!S Eb
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); yzhNl'Rz
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); DpgTm&}-
if(tmpFile.exists ()) _{cCo:
{ R03 Te gwA
bFirst = false; DaQl ip
read_nPos(); [ncK+rGAc
} qy3@>
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else rtj`FH??11
{ MY@&^71i4
nStartPos = new long[bean.getNSplitter()]; O[C4xq
nEndPos = new long[bean.getNSplitter()]; U;MXiE3D
} ]h,rgO;
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} s;Gd`-S>d
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public void run() 06S
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{ ~Ba=nn8Cq
//获得文件长度 W}CM;~*L
//分割文件 uX6yhaOp|
//实例FileSplitterFetch LTTMa-]Yy
//启动FileSplitterFetch线程 fgdR:@]-
//等待子线程返回 tR|dnC4U
try{ a]T:wUYG'
if(bFirst) lhGJ/By- -
{ v4n< G-
nFileLength = getFileSize(); Vb(b3
if(nFileLength == -1) (.ir"\k1(
{ Db,"Gl
System.err.println("File Length is not known!"); -^xbd_'
} eluN~T:W
else if(nFileLength == -2) @&ZQDi
{ yWi-ic
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System.err.println("File is not access!"); DW. w=L|5R
} RSp wU;o6z
else .$18%jH#
{ $8=|<vt
for(int i=0;i<nStartPos.length;i++) } a9Ah:.7/
{ R c+olJ^5
nStartPos = (long)(i*(nFileLength/nStartPos.length)); T-en|.
} ^viabkf C
for(int i=0;i<nEndPos.length-1;i++) _p-e)J$7
{ &J>e;X
nEndPos = nStartPos[i+1]; N*o{BboK;
} UZyg_G6
nEndPos[nEndPos.length-1] = nFileLength; @AEH?gOX
} LjI`$r.B
} X8$i*#D
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//启动子线程 Wo1xZZ
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 4dX{an]Cz
for(int i=0;i<nStartPos.length;i++) X7},|cmD_
{ 8=`L#FkRp
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ).SJ*Re*^I
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), k
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nStartPos,nEndPos,i); R~\R>\
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); =yf)Z^
fileSplitterFetch.start(); s@F&N9oh
} r)*23 &Ojs
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), fMUcVTFe
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); lG7PM^Eb
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", =,6H2ew
nEndPos = " + nFileLength); MiT0!6Pg
// fileSplitterFetch[nPos.length-1].start(); SYCL\b
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//等待子线程结束 \MP~}t}c
//int count = 0; W[ l
//是否结束while循环 .XJ'2yKof
boolean breakWhile = false; 1<YoGm&
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while(!bStop) Q(bOar5
{ {R}F4k
write_nPos(); DB/~Z
Utility.sleep(500); q/#e6;x
breakWhile = true; 4q}+8F`0F
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for(int i=0;i<nStartPos.length;i++) gP2zDI
{ tT}b_r7h(1
if(!fileSplitterFetch.bDownOver) jn<?,UABD
{ uX_H;,n
breakWhile = false; w% %q/![uy
break; ~g{j)"1
} *~vB6V|1
} Er;/zxg9p
if(breakWhile) l0qaTpn
break; 1Bj.MQ^
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//count++; {^N,=m\
//if(count>4) u8Ys2KLpL
// siteStop(); ;TAj;Tf]H
}
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System.err.println("文件下载结束!"); Y^fw37b
} \ruQx)5M
catch(Exception e){e.printStackTrace ();}
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} m5K?oV@n
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//获得文件长度 f3K-X1`]'U
public long getFileSize() 7(Fas(j3
{ 586P~C[ic
int nFileLength = -1; >8f~2dH2%
try{ Ku(YTXtK
URL url = new URL(siteInfoBean.getSSiteURL()); 1d5%(:@
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); /2tA
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httpConnection.setRequestProperty("User-Agent","NetFox"); %*R, ceuI
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int responseCode=httpConnection.getResponseCode(); YYWD\Y`8
if(responseCode>=400) k@4N7}
{ }y(t')= 9
processErrorCode(responseCode); U=Ps#
return -2; //-2 represent access is error .j]tzX
} j4$nr=d.6
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String sHeader; +kL7"
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for(int i=1;;i++) uNyU]@R<W
{ AdDX_\V,*
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); c!EA>:;(<
//Utility.log(in.readLine()); V*vQNPey
sHeader=httpConnection.getHeaderFieldKey(i); -S sgW
if(sHeader!=null)
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{ Qi18q|l8v
if(sHeader.equals("Content-Length")) ]
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{ f:>y'#P
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 69c4bT:b"
break; ?;XO1cs
} Rl?1|$%
} .9J^\%JD
else -CvmZ:n
break; dbf<k%i6
} c8uaZvfW
} wWl?c
catch(IOException e){e.printStackTrace ();} ;s+/'(*
catch(Exception e){e.printStackTrace ();} iLy^U*yK
s= Fp[>qA
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Utility.log(nFileLength); `B%%2p&
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return nFileLength; I}`pY3
} )N.3Q1g-
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//保存下载信息(文件指针位置) ,GSiSn
private void write_nPos() +( LH!\{^
{ #-L0.z(
try{ &~:EmLgv
output = new DataOutputStream(new FileOutputStream(tmpFile)); de:@/-|
output.writeInt(nStartPos.length); f"Sp.'@
for(int i=0;i<nStartPos.length;i++) KuR]X``2
{ Y@FYo>0O
// output.writeLong(nPos); l2F#^=tp
output.writeLong(fileSplitterFetch.nStartPos); E !kN h
output.writeLong(fileSplitterFetch.nEndPos); '2^}de!E
} Phn^0 iF
output.close(); GfONm6A
} L3eF BF/
catch(IOException e){e.printStackTrace ();} ,DFN:uf=l
catch(Exception e){e.printStackTrace ();} J!C \R5\
} UC`h o%OBF
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//读取保存的下载信息(文件指针位置) ?!RbS#QV}
private void read_nPos() M5I`i{Gw
{ '\bokwsP
try{ mERkC,$
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Cy-p1s
int nCount = input.readInt(); )1At/ mr
nStartPos = new long[nCount]; a6Vfd&
nEndPos = new long[nCount]; a*p|Ij
for(int i=0;i<nStartPos.length;i++) 13?:a[~=Y
{ *7AB0y0k
nStartPos = input.readLong(); Ii0\Skb
nEndPos = input.readLong(); B^2r4
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} 5{=+S]
input.close(); /\1'.GR
} )Jt. Z^J<
catch(IOException e){e.printStackTrace ();} @qNY"c%HV
catch(Exception e){e.printStackTrace ();} WJ8i=MO67
} $%EX~$=m]-
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private void processErrorCode(int nErrorCode) Cu@q*:'
{ , Q0Y} )
System.err.println("Error Code : " + nErrorCode); I~l
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} sc*R:"
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//停止文件下载 -r*|N.5c
public void siteStop() [8'?G5/n
{ -mO#HZ Iq
bStop = true; q^xG%YdPz+
for(int i=0;i<nStartPos.length;i++) "M/c0`>C!i
fileSplitterFetch.splitterStop(); ';R]`vWFe
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} -;cF)C--12
} 0MRWx%CR
//负责部分文件的抓取 !/G}vu
**FileSplitterFetch.java V7WL Gy.,
*/ M6wH$!zRa
package NetFox; 4q.;\n
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import java.io.*; )f3A\^
import java.net.*; >vD}gGBe
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public class FileSplitterFetch extends Thread { (1x8DVXNN
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