/* U.Fs9F4M #
**SiteFileFetch.java #('GGzL6c
*/ \HL66%b[
package NetFox; N *,[(q
import java.io.*; m>^vr7
import java.net.*; G2dPm}s ZG
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public class SiteFileFetch extends Thread { i
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SiteInfoBean siteInfoBean = null; //文件信息Bean f{-,"6Y1
long[] nStartPos; //开始位置 z
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long[] nEndPos; //结束位置 #G\Ae:O
FileSplitterFetch[] fileSplitterFetch; //子线程对象 a/n~#5-
long nFileLength; //文件长度 ETm:KbS
boolean bFirst = true; //是否第一次取文件 ~g}blv0q+B
boolean bStop = false; //停止标志 lXRB"z
File tmpFile; //文件下载的临时信息 r-_-/O"l
DataOutputStream output; //输出到文件的输出流 eB9F35[
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) uMjL>YLq{?
public SiteFileFetch(SiteInfoBean bean) throws IOException qu0q
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{ i(4.7{*
siteInfoBean = bean; y/>Nx7C0=2
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); BKK@_B"
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); mGoNT
if(tmpFile.exists ()) 63'L58O
{ 5R6QZVc
bFirst = false; 7#j9"*
read_nPos(); nK`H;k
} U45-R-
else Pf~0JNnc
{ *G[` T%g
nStartPos = new long[bean.getNSplitter()]; Mehp]5*
nEndPos = new long[bean.getNSplitter()]; mr,GHx
} +hcJ!$J7
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} tILnD1q
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public void run() "?6R"Vk?:
{ 3}B-n!|*
//获得文件长度 m4^VlE,`Dh
//分割文件 4{h^O@*g
//实例FileSplitterFetch p7L6~IN
//启动FileSplitterFetch线程 Jw^h<z/Ux
//等待子线程返回 |!J_3*6$>*
try{ 4'.]-u
if(bFirst) ]d*O>Pm
{ p
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nFileLength = getFileSize(); GL^
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if(nFileLength == -1) Uv(}x7e)
{ P0rdGf 5T
System.err.println("File Length is not known!"); knzQ)iv&&
} ]''tuo2g8
else if(nFileLength == -2) bd3>IWihp
{ UMH~Q`"
System.err.println("File is not access!"); tPDB'S:&3
} X^C $|:
else @h5 Q?I
{ m|[cEZxHB
for(int i=0;i<nStartPos.length;i++) PPh1y;D
{ !q8A!P4|'
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 0Qg%48u
} {"0n^!
for(int i=0;i<nEndPos.length-1;i++) !v*#E{r"g=
{ Is97>aid
nEndPos = nStartPos[i+1]; 9lX[rBZ
} NJKk\RM@7
nEndPos[nEndPos.length-1] = nFileLength; [n +(
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} R=W$3Ue~,
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//启动子线程 vIFx'S~D
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 3ep
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for(int i=0;i<nStartPos.length;i++) Koz0Xy
{ ktv{-WG2_
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), fVZ_*'v
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), th=45y"C
nStartPos,nEndPos,i); pe+m%;nzR
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 72y!cK6
fileSplitterFetch.start(); gIcPKj"8${
} ]xhH:kW4
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %Jn5M(myC
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); d_98%U+u
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", vf`]
nEndPos = " + nFileLength); DE?@8k
// fileSplitterFetch[nPos.length-1].start(); =OR&,xt
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//等待子线程结束 }80n5X<9
//int count = 0; ,->
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//是否结束while循环 &HJ~\6r\
boolean breakWhile = false; JM*rPzp
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while(!bStop) #elaz8 5
{ tI2p-d9B
write_nPos(); Pv@;)s(-
Utility.sleep(500); *8 ]
breakWhile = true; b;I!CyD
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for(int i=0;i<nStartPos.length;i++) FRTvo
{ #p=Wt&2
if(!fileSplitterFetch.bDownOver) 4 W+ nSv
{ gwYTOs^
breakWhile = false; g:"Hg-s
break; /zV0kW>N
} *tT5Zt/&Sr
} St1>J.k_
if(breakWhile) ,I[A~
break; 8\Eq(o}7
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//count++; .T*7nw
//if(count>4) W/;qMP1"-
// siteStop(); 5TdI
} NO)vk+
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System.err.println("文件下载结束!"); F~O!J@4]
} bRAf!<3
catch(Exception e){e.printStackTrace ();} NPR{g!tK%
} !!t@H\
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//获得文件长度 k<S!|
public long getFileSize() 0 .p $q
{ ; d
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int nFileLength = -1; kC[nY
try{ |zL .PS
URL url = new URL(siteInfoBean.getSSiteURL()); Xq%!(YD|
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); KBGJB`D*
httpConnection.setRequestProperty("User-Agent","NetFox"); uO-R:MC
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int responseCode=httpConnection.getResponseCode(); 8%#uZG\}
if(responseCode>=400) BF6H_g
{ ihhnB
processErrorCode(responseCode); 3'2}F%!Mv
return -2; //-2 represent access is error
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} l@YpgyqaL
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String sHeader; #Ryu`b
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for(int i=1;;i++) `o*g2fW!
{ mwTn}h3N
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); >Y< y]vM:
//Utility.log(in.readLine()); 2jx+q
sHeader=httpConnection.getHeaderFieldKey(i); z95V 7E
if(sHeader!=null) Bf88f<Z
{ i&FC-{|Z
if(sHeader.equals("Content-Length")) L=}UApK
{ +=@Z5eu
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); p:ST$ 1 K
break; P-`^I`r
} osX23T~-
} YKvFZH)
else I_ .;nU1xA
break; A1f]HT
} +CNRSq"
} (A&@
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catch(IOException e){e.printStackTrace ();} 0KT{K(
catch(Exception e){e.printStackTrace ();} c\4n 7m,y
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Utility.log(nFileLength); JT^E`<nn
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return nFileLength; )3B5"b,
} rb\Ohv\
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//保存下载信息(文件指针位置) TzL40="F
private void write_nPos() W@$p'IBwm
{ (\/HGxv
try{ v|,H d
output = new DataOutputStream(new FileOutputStream(tmpFile)); v
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output.writeInt(nStartPos.length); c[y=K)<Z
for(int i=0;i<nStartPos.length;i++) FVQWz[N
{ %#QFu/l
// output.writeLong(nPos); v,i:vT\~
output.writeLong(fileSplitterFetch.nStartPos); kdYl>M
output.writeLong(fileSplitterFetch.nEndPos); #1bgV
} g&E_|}u4
output.close(); '/
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} :M[E-j;
catch(IOException e){e.printStackTrace ();} 0RSa{iS*A
catch(Exception e){e.printStackTrace ();} 4!}fCP ty
} >6DY3\
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//读取保存的下载信息(文件指针位置) VD#^Xy4% r
private void read_nPos() VYAe!{[
{ Xp?Z;$r$
try{ a@jP^VVk
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 49zp@a
int nCount = input.readInt(); }\*Sf[EMD
nStartPos = new long[nCount]; dw4)4_
nEndPos = new long[nCount]; +tN-X'u##
for(int i=0;i<nStartPos.length;i++) uATBt
{ *-Yw0Y[E
nStartPos = input.readLong(); .yP
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nEndPos = input.readLong(); _5LlL#)
} F_Pd\Aq8
input.close(); t@HE.h
} anwn!Eqk"
catch(IOException e){e.printStackTrace ();} 7z,M`14
catch(Exception e){e.printStackTrace ();} XbOL/6V ^[
} Mk9kGP%
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private void processErrorCode(int nErrorCode) z*[Z:
{ ?3Fo:Z`@F
System.err.println("Error Code : " + nErrorCode); 4#YklVm
} si;]C~X*
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//停止文件下载 &4[iC/}
public void siteStop() 1<p"z,c
{ E>1USKxn
bStop = true; UK<"|2^sT
for(int i=0;i<nStartPos.length;i++)
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fileSplitterFetch.splitterStop(); 3U`.:w`
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} C/Z"W@7#;
} TatyD**(
//负责部分文件的抓取 }00e@a
**FileSplitterFetch.java awK'XFk
*/ [Bh]\I'
package NetFox; Ja&%J:
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import java.io.*; 2yZ6:U~
import java.net.*; o|W? a#_\
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public class FileSplitterFetch extends Thread { wm8x1+P
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String sURL; //File URL .-ABo]hf
long nStartPos; //File Snippet Start Position Dn3~8
long nEndPos; //File Snippet End Position @ih}x
int nThreadID; //Thread's ID $g};u[y
boolean bDownOver = false; //Downing is over #50)D wD
boolean bStop = false; //Stop identical 8(D}y\
FileAccessI fileAccessI = null; //File Access interface yBj)#m5!
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException +*DX(v"BH
{ >cNXB7]E>
this.sURL = sURL; rh&on