/* \0^Je>-:U
**SiteFileFetch.java s%)>O{{)
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package NetFox; n*N`].r#{=
import java.io.*; \p J<@
import java.net.*; c)17[9"
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public class SiteFileFetch extends Thread { AJt4I
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SiteInfoBean siteInfoBean = null; //文件信息Bean NKRH>2,
long[] nStartPos; //开始位置 f >\~h,SLL
long[] nEndPos; //结束位置 ~"WN4
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ] U[4r9V
long nFileLength; //文件长度 oo!JAv}~
boolean bFirst = true; //是否第一次取文件 }zHG]k,j
boolean bStop = false; //停止标志 {OW.^UIq^
File tmpFile; //文件下载的临时信息 BE," lX
DataOutputStream output; //输出到文件的输出流 DgC;1U'
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) /@K1"/fqH
public SiteFileFetch(SiteInfoBean bean) throws IOException lhJZPnx~
{ &y:SK)
siteInfoBean = bean; 6>/g`%`N
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); e}W|wJ):j@
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 6ieP` bct
if(tmpFile.exists ()) 'E#Bz"T
{ x5W.
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bFirst = false; <z-+{-?z~
read_nPos(); E%\Ohs7
} >/DlxYG?
else IVSd,AR7yY
{ YRJw,xl
nStartPos = new long[bean.getNSplitter()]; b`DPf@p^kc
nEndPos = new long[bean.getNSplitter()]; x=VLRh%Gvl
} R8fB
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} |ea}+N
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public void run() zgA/B{DaC;
{ of?'FrU
//获得文件长度 X?q,m4+
//分割文件 FFID<Lf/2
//实例FileSplitterFetch ?-9It|R
//启动FileSplitterFetch线程 0o-KjX?kP
//等待子线程返回 b)@b63P_
try{ p ^Dm w0y
if(bFirst) r7n-Xe
{ u6~/"
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nFileLength = getFileSize(); M\dZxhQ-l
if(nFileLength == -1) x8E!Ko](
{ m}?(c)ST
System.err.println("File Length is not known!"); ?DKwKt
} ?ZT+4U00U
else if(nFileLength == -2) ($Ck5`_MK
{ H6]z9 8
System.err.println("File is not access!"); wdTjJfr
} by0M(h
else $${9 %qPzb
{ D$G:#z*
for(int i=0;i<nStartPos.length;i++) \*6Ld%:h$
{ X2hyxTOp
nStartPos = (long)(i*(nFileLength/nStartPos.length)); uvj`r5ei
} B]5G"4,
for(int i=0;i<nEndPos.length-1;i++) ".T&nS[z
{ YCEdt>5PA
nEndPos = nStartPos[i+1]; <GRrw
} MLn \b0
nEndPos[nEndPos.length-1] = nFileLength; :I^I=A%Pe(
} SFx|9$hXm
} UBvea(z-#
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//启动子线程 khtYn.eaL
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; \t\ZyPxn
for(int i=0;i<nStartPos.length;i++) V.Ki$0>
{ %,[p[`NRYR
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), H8'_.2vwX
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), QAmb_:^"d
nStartPos,nEndPos,i); V50FX}i
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); e|jmOYWG
fileSplitterFetch.start(); V?"SrXN>
} ZF6?N?t}h8
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), BX=YS)
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); F~tT5?+
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", SN/
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nEndPos = " + nFileLength); |]8Hh>
// fileSplitterFetch[nPos.length-1].start(); Y1Qg|U o
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//等待子线程结束 UuvI?D
//int count = 0; LU4k/
//是否结束while循环 }hd:avze
boolean breakWhile = false; +Pm
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while(!bStop) |VRzIA4M\
{ *Af:^>mh
write_nPos(); }+Ne)B E
Utility.sleep(500); jLu`DKB
breakWhile = true; K}p!W"!o
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for(int i=0;i<nStartPos.length;i++) iI(7{$y
{ G 0;5I_D/
if(!fileSplitterFetch.bDownOver) dy%#E2f
{ Ysz&/ry
breakWhile = false; ApxGrCu
break; lYq4f|5H}m
} R<jt$--H
} }+4^ZbX+:
if(breakWhile) ee|i
break; 1EvK\
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//count++; \KJ\> 2Y
//if(count>4) 3A(sT}
// siteStop(); }+1Y>W7q
} 8Vb.%f&I
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System.err.println("文件下载结束!"); Rg!Fu
} 39(]UO6^;
catch(Exception e){e.printStackTrace ();} "\9!9U#!
} d!i#@XZ^
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//获得文件长度 - s,M+Q(<
public long getFileSize() U 3f a*D
{ G$B( AWL
int nFileLength = -1; Pgg\(D#X`
try{ ub0uxvz
URL url = new URL(siteInfoBean.getSSiteURL()); 5}uH;E)4
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ?4 fXCb]7
httpConnection.setRequestProperty("User-Agent","NetFox"); NlS/PWc6(
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int responseCode=httpConnection.getResponseCode(); l"#}g%E
if(responseCode>=400) mu?6Phj
{ &(]@L\A
processErrorCode(responseCode); dMnJ)R
return -2; //-2 represent access is error Z`=[hu
} D/
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String sHeader; +v`?j+6z
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for(int i=1;;i++) u&!QP4$"z
{ 2$MIA?A"Y
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); vIi#M0@N
//Utility.log(in.readLine()); 5ZRO{rf
sHeader=httpConnection.getHeaderFieldKey(i); MifPZQ
if(sHeader!=null) I-QaR
{ _ZnVQ,zY
if(sHeader.equals("Content-Length")) x!A.**
{ %6vf~oG
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); wm$1LZ8o-`
break; 8$H_:*A?
} d3$&I==;:
} YB^[HE\#y
else gdu8O!9)
break; %)Pn<! L
}
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} {q[l4_
catch(IOException e){e.printStackTrace ();} `Eijy3>h
catch(Exception e){e.printStackTrace ();} Ez*9*]O*+
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Utility.log(nFileLength); u7oHqo`
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return nFileLength; QeK@++EVc
} 1q])"l"<
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//保存下载信息(文件指针位置) thYG1Cs
private void write_nPos() d Q5_=(9
{ H>x(c|ZBp
try{ p@H3NX
output = new DataOutputStream(new FileOutputStream(tmpFile)); H WOl79-
output.writeInt(nStartPos.length); ! f\q0Gnl
for(int i=0;i<nStartPos.length;i++) PfaBzi9?f
{ J;K-Pv+
// output.writeLong(nPos);
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output.writeLong(fileSplitterFetch.nStartPos); |6%B2I&c
output.writeLong(fileSplitterFetch.nEndPos); 'Y
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} FY^[?lj
output.close(); WW'8&:x
} h@5mVTb}i
catch(IOException e){e.printStackTrace ();} 5ayM}u%\~
catch(Exception e){e.printStackTrace ();} ^r u1QDT
} fgs){Ng`
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//读取保存的下载信息(文件指针位置) rNgFsFQ>.
private void read_nPos() s<i& q {r
{ BM(8+Wj
try{ ]}3AP!:
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); $c!cO" U
int nCount = input.readInt(); %6\e_y%
nStartPos = new long[nCount]; 9aED6
nEndPos = new long[nCount]; :|s!_G <
for(int i=0;i<nStartPos.length;i++) %>dCAj"
{ u7_IO
nStartPos = input.readLong(); U;Iqz1S
nEndPos = input.readLong(); qP"+SVqC
} %nTgrgS(=
input.close(); _B@=fY(g!
} tSr.0'CE
catch(IOException e){e.printStackTrace ();} /'V(F* g
catch(Exception e){e.printStackTrace ();} ,cbCt
} HC4vet
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private void processErrorCode(int nErrorCode) h&$7^P
{ td:GZ %
System.err.println("Error Code : " + nErrorCode); kEH(\3,l
} l\PDou@5
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//停止文件下载 bbDl?m&bq
public void siteStop() 8i H'cX
{ ax]Pa*C}
bStop = true; r#ISIgJXG
for(int i=0;i<nStartPos.length;i++) rOt`5_2f
fileSplitterFetch.splitterStop(); 39xA h*}G]
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} wABaNB=9;
} hL1q9%
//负责部分文件的抓取 *hhPCYOm
**FileSplitterFetch.java LL|uMe"Jb
*/ DrfOz#a0Uu
package NetFox; w4m-DR5
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import java.io.*; E8[{U8)[;5
import java.net.*; K%Dksx7ow
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public class FileSplitterFetch extends Thread { [^rT: %Z
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String sURL; //File URL [D8u.8q
long nStartPos; //File Snippet Start Position Q}pnb3J>T
long nEndPos; //File Snippet End Position ' }G!D
int nThreadID; //Thread's ID ^hG
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boolean bDownOver = false; //Downing is over _0~WT
boolean bStop = false; //Stop identical ]}KoW?M
FileAccessI fileAccessI = null; //File Access interface <r6e23
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException zG\g{cB
{ 2~:jg1
this.sURL = sURL; ^Z?X\t
this.nStartPos = nStart; v9<7= D&x
this.nEndPos = nEnd; dQ&S&SW
nThreadID = id; f L @rv
fileAccessI = new FileAccessI(sName,nStartPos);//定位 K+9oV[DMs
} .AEOf0t
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public void run() _R&}CP
{ !ke_?+8sY
while(nStartPos < nEndPos && !bStop) l>l)m-;O
{ aNZJs<3;'D
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try{ cY%[UK $l
URL url = new URL(sURL); c\X0*GX
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 'dE G\?v9
httpConnection.setRequestProperty("User-Agent","NetFox"); q+A^JjzT
String sProperty = "bytes="+nStartPos+"-"; 'ZyHp=RN)
httpConnection.setRequestProperty("RANGE",sProperty); q4].C|7
Utility.log(sProperty); RYU(z;+0p
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InputStream input = httpConnection.getInputStream(); #41fRmzC
//logResponseHead(httpConnection); HPc7Vo(
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byte[] b = new byte[1024]; xM ]IU
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int nRead; 4vri=P 2%
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) q3+G
{ 2k\i/i/Y
nStartPos += fileAccessI.write(b,0,nRead); :K%{?y
//if(nThreadID == 1) 9fk@C /$
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); #[.vfG
} 'qGKS:8
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Utility.log("Thread " + nThreadID + " is over!"); $"P9I-\m
bDownOver = true; x/nlIoT
//nPos = fileAccessI.write (b,0,nRead); f1cQ*#2~
} U) tqo_
catch(Exception e){e.printStackTrace ();} g+5{&YD
} 4@,d{qp~
} Y{].%xM5
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//打印回应的头信息 pdcP;.
public void logResponseHead(HttpURLConnection con) H*#L~!]
{ @"M%ZnFu
for(int i=1;;i++) :HSqa9>wa
{ ~ vD7BO`
String header=con.getHeaderFieldKey(i); sE*A,z?
if(header!=null) ENlqoj1
//responseHeaders.put(header,httpConnection.getHeaderField(header)); PJC[#>}
Utility.log(header+" : "+con.getHeaderField(header)); !Vtt.j &4
else "NU l7ce.R
break; f/spJ<B).4
} [Z2:3*5r.
} X[L6Av
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public void splitterStop() [4)q6N5`f
{ (!h%)
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bStop = true; &!I^m
} xkv2#"*v
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} SHw%u~[hu
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/*
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**FileAccess.java nSH
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*//文件访问(定位,写) [al, UO
package NetFox; p fj%AP:
import java.io.*; d*%-r2K
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public class FileAccessI implements Serializable{ ]h0Fv-[A
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 z7+y{-{Z
RandomAccessFile oSavedFile; ([loWr}QR
long nPos; %|(~k*s4
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public FileAccessI() throws IOException ],ow@}
{ ,BM6s,\
this("",0); /1X0h
} i2or/(u`
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public FileAccessI(String sName,long nPos) throws IOException te?R(&
{ @kR/=EfS
oSavedFile = new RandomAccessFile(sName,"rw"); M[5zn
this.nPos = nPos; kc&