/* fOkB|E]
**SiteFileFetch.java ZKco
*/ Z&Ao;=Gp1
package NetFox; F|&=\Q
import java.io.*; f%cbBx^;
import java.net.*; 5B,HJax
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public class SiteFileFetch extends Thread { @(_f}SgfE
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SiteInfoBean siteInfoBean = null; //文件信息Bean ![CF
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long[] nStartPos; //开始位置 n 9N'}z
long[] nEndPos; //结束位置 QB|D_?]
FileSplitterFetch[] fileSplitterFetch; //子线程对象 N_qKIc_R
long nFileLength; //文件长度 |{JJ2c\W
boolean bFirst = true; //是否第一次取文件 qk=0ovUzg
boolean bStop = false; //停止标志 ?QfomTT
File tmpFile; //文件下载的临时信息 %2t#>}If!
DataOutputStream output; //输出到文件的输出流 g"o),$tm
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) RRBBz7:~
public SiteFileFetch(SiteInfoBean bean) throws IOException Oxq} dX7S
{ ?7CHHk
siteInfoBean = bean; JHIXTy__
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); z(d X<
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); B@@j-
if(tmpFile.exists ()) <rAk"R^
{ q26%Z)'nf
bFirst = false; 6A \Z221E
read_nPos(); ps=+wg?]
} /'g"Ys?3
else 1ps_zn(
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nStartPos = new long[bean.getNSplitter()]; xPJ
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nEndPos = new long[bean.getNSplitter()]; X* Dt<i};v
} 5xF R7%_&
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public void run() 06peo
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{ }4M4D/=
//获得文件长度 maopr$r
//分割文件 OlI {VszR
//实例FileSplitterFetch A7X-),D
//启动FileSplitterFetch线程 7TN94@kCF
//等待子线程返回 SX I3y
try{ Ap[}[:U
if(bFirst) baVSQtda
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nFileLength = getFileSize(); ~0~f
if(nFileLength == -1) HD95>%
{ :$ "L;"
System.err.println("File Length is not known!"); 4;hgi[
} ;
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else if(nFileLength == -2) kW=GFj)L
{ YN@4.&RP
System.err.println("File is not access!"); _^)<d$R<
} td6$w:SN,l
else T)NnWEB
{ C*I~14
for(int i=0;i<nStartPos.length;i++) #=hI}%n
{
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); /\_wDi+#
} @Ja8~5 :
for(int i=0;i<nEndPos.length-1;i++) AqzPwO^
{ o?$B<Cb"
nEndPos = nStartPos[i+1]; _@47h86Q
}
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nEndPos[nEndPos.length-1] = nFileLength; #+-
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} -b4#/q+bb+
} M9/c8zZ
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//启动子线程 NZyGC
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 6O>GVJbw
for(int i=0;i<nStartPos.length;i++) t
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ~Zc=FP:1
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), W5_:Q@
nStartPos,nEndPos,i); @L-3&~=
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); @ KhDQ0v]5
fileSplitterFetch.start(); %`P6a38j
} v){&g5djl
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %\
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); SJtQK-%wK>
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", bnz2\C9^
nEndPos = " + nFileLength); na&?Cw
// fileSplitterFetch[nPos.length-1].start(); ]mN'Qoc
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//等待子线程结束 p. eq
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//int count = 0; 3U<\s=1?X
//是否结束while循环 N;9m&)@JR'
boolean breakWhile = false; 0Jh^((i*
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while(!bStop) vap,)kILF
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write_nPos(); UvSvgDMl
Utility.sleep(500); K 9ytot
breakWhile = true; TX96
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for(int i=0;i<nStartPos.length;i++) y\DR,$Py
{ cuO)cj]@e
if(!fileSplitterFetch.bDownOver) SO#NWa<0|
{ !1tHg Z2\
breakWhile = false; 0,a;N%K-
break; <n4T*
} Q`"gKBN1
} prvvr;Ib
if(breakWhile) 7cGc`7
break; /STFXR1@.u
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//count++; u%J04vG"D
//if(count>4) la7VeFT
// siteStop(); ]d$:R`;
} M]O
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System.err.println("文件下载结束!"); w-%V9]J1
} Y40`~
catch(Exception e){e.printStackTrace ();} ,m| :U
} 'D ,efTq
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//获得文件长度 <l/QS3M
public long getFileSize() v71j1Q}6
{ :+%"kgJNL
int nFileLength = -1; \K$9r=!(
try{ F)ak5
URL url = new URL(siteInfoBean.getSSiteURL()); Arg604V3
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); +gZg7]!Z
httpConnection.setRequestProperty("User-Agent","NetFox"); !^{0vFWE
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int responseCode=httpConnection.getResponseCode(); = GN1l[X
if(responseCode>=400) BI\ )vr$
{ ~*OQRl6F
processErrorCode(responseCode); (twwDI
return -2; //-2 represent access is error td*1
} J!O{.v
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String sHeader; HeV6=
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for(int i=1;;i++) F];"d0O#5
{ i2. +E&3v
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); x$:>W3?T=^
//Utility.log(in.readLine()); V}?*kx~T2C
sHeader=httpConnection.getHeaderFieldKey(i); ( v<l9}!
if(sHeader!=null) 6n[O8^
{ ^HJvT)e4
if(sHeader.equals("Content-Length")) sGg=4(D
{ lD`@{A
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); (OA-Mgyc
break; W6~aL\[
} 'o D31\@I
} $1aJdZC7
else ]i$<<u
break; >K|<hzZ
} I-?PTr
} .[%^~q7
catch(IOException e){e.printStackTrace ();} =t[hs l
catch(Exception e){e.printStackTrace ();} I},]Y~Y3
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Utility.log(nFileLength);
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return nFileLength; C)x>/Qr ~
} $&fP%p
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//保存下载信息(文件指针位置) w'[^RZW:j
private void write_nPos() sBN"eHg
{ +c7e[hz
try{ 3pzp6o2
output = new DataOutputStream(new FileOutputStream(tmpFile)); s5`CV$bz
output.writeInt(nStartPos.length); T^z
for(int i=0;i<nStartPos.length;i++) [-ONs
{ %4bGI/\/
// output.writeLong(nPos); [h5~1N
output.writeLong(fileSplitterFetch.nStartPos); 4q9+a7@
output.writeLong(fileSplitterFetch.nEndPos); Z-md$=+}w
} |:H
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output.close(); ~__r-z
} 9Dat
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catch(IOException e){e.printStackTrace ();} `_MRf[Z}
catch(Exception e){e.printStackTrace ();} ";kwh8wB
} [6ycs[{!
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//读取保存的下载信息(文件指针位置) TnuaP'xZ
private void read_nPos() QPD[uJ(I
{ 4!vovt{
try{ U"qR6
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); !7rk>YrY
int nCount = input.readInt(); >'eY/>n{
nStartPos = new long[nCount]; 8I>'xf
nEndPos = new long[nCount]; rtjUHhF
for(int i=0;i<nStartPos.length;i++) q0m>NA
{ u5'jIqlU
nStartPos = input.readLong(); zfsGf'U
nEndPos = input.readLong(); YcRo>:I
} 5bj9S
input.close(); 6"o,)e/z
} F
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catch(IOException e){e.printStackTrace ();} sahXPl%;U
catch(Exception e){e.printStackTrace ();} lH%%iYBM
} Ii.?|
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private void processErrorCode(int nErrorCode) ov
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{ VYo2m
System.err.println("Error Code : " + nErrorCode); r|ID]}w
} &6@#W]_
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//停止文件下载 5/E7@h ,
public void siteStop() {W' 9k
{ n:8<Ijrh
bStop = true; h,fC-+H5
for(int i=0;i<nStartPos.length;i++) IaHu$` v
fileSplitterFetch.splitterStop(); Y& p
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} EyDH-}Y
} q; ?Kmk
//负责部分文件的抓取 xTGdh
**FileSplitterFetch.java gucgNpX
*/ KW@][*\uC
package NetFox; '},
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import java.io.*; Q`zW[Y&]
import java.net.*; WNK)IC~c
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public class FileSplitterFetch extends Thread { QFg{.F?3q>
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String sURL; //File URL 6
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long nStartPos; //File Snippet Start Position ..fbRt
long nEndPos; //File Snippet End Position hQ80R B
int nThreadID; //Thread's ID >$:_M*5
boolean bDownOver = false; //Downing is over ^|lw~F
boolean bStop = false; //Stop identical {%BPP{OFk
FileAccessI fileAccessI = null; //File Access interface F T$x#>
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException *3A)s
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{ H$k2S5,,z
this.sURL = sURL; `9&~fWu
this.nStartPos = nStart; L(q~%
this.nEndPos = nEnd; '&!:5R5 9
nThreadID = id; 2o<aEn&7|e
fileAccessI = new FileAccessI(sName,nStartPos);//定位 .H}#,pQ}l
} .YlhK=d4
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public void run() A(D3wctdr
{ :I(d-,C
while(nStartPos < nEndPos && !bStop) m9mkZ:r(kV
{ Lk]W?
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try{ eZ|_wB'r
URL url = new URL(sURL); i'3)5
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ;$g?W"
httpConnection.setRequestProperty("User-Agent","NetFox"); $Ned1@%[
String sProperty = "bytes="+nStartPos+"-"; FnCMr_
httpConnection.setRequestProperty("RANGE",sProperty); dYZB>
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Utility.log(sProperty); .s%dP.P:i1
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InputStream input = httpConnection.getInputStream(); l9z{pZ\KM
//logResponseHead(httpConnection); ]Q -.Y-J/O
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byte[] b = new byte[1024]; I_is3y0
int nRead; tR<L9h
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) S{nBQB<
{ eQJyO9$G
nStartPos += fileAccessI.write(b,0,nRead); XB<Q A>dLh
//if(nThreadID == 1) oA+'9/UY
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 6E$ET5p&