/* uwQgu!|x
**SiteFileFetch.java XV/7K"
*/ ~s-bA#0S
package NetFox; #W6 6`{>
import java.io.*; uH?dy55Y
import java.net.*; idB1%?<
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public class SiteFileFetch extends Thread { \q?^DI:`
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SiteInfoBean siteInfoBean = null; //文件信息Bean Fv7]1EO.
long[] nStartPos; //开始位置 [n2zdiiBd
long[] nEndPos; //结束位置 ^vxx]Hji
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ,,H;2xYf
long nFileLength; //文件长度 F!3p )?
boolean bFirst = true; //是否第一次取文件 O1UArD
boolean bStop = false; //停止标志 R%4Yg(-Q
File tmpFile; //文件下载的临时信息 i}:hmy'
DataOutputStream output; //输出到文件的输出流 Q7<Y5+
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) mKjTJzS
public SiteFileFetch(SiteInfoBean bean) throws IOException O&MH5^I
{ qdLzB
siteInfoBean = bean; /O<~n%< G
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); %%|p J%}Q>
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); >yr;Y4y7K
if(tmpFile.exists ()) :2H]DDg(
{ "b402"&
bFirst = false; +.&P$`;TZj
read_nPos(); ?%`Ph ?BZl
} !KJA)znx;(
else `v@Z|rv,
{ X&HYWH'@,
nStartPos = new long[bean.getNSplitter()]; -. o,bg
nEndPos = new long[bean.getNSplitter()]; Fm=jgt3wv8
} ia3Q1 9r
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} 0J^Z)U>j
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public void run() '%4fQ%ID}
{ W**[:n+
//获得文件长度 9+MW13?
//分割文件 =dH=3iCG
//实例FileSplitterFetch SHs [te[
//启动FileSplitterFetch线程 V,=5}qozQ
//等待子线程返回 XlD=<$Nk7
try{ iZ>P>x\
if(bFirst) p6NPWaBR
{ unc6 V%
nFileLength = getFileSize(); f,i2U|1pbj
if(nFileLength == -1) K\KQ(N8F
{ y{&%]Fq
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System.err.println("File Length is not known!"); k-a1^K3
} I{[}1W3]W
else if(nFileLength == -2) `k>C%6FG$#
{ g)\ Tex<
System.err.println("File is not access!"); Op8Gj
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} b+q'xnA=>
else *^Zt)U1$|
{ ZnJJ-zP
for(int i=0;i<nStartPos.length;i++) NC!B-3?x
{ mhv6.W@
nStartPos = (long)(i*(nFileLength/nStartPos.length)); Qy"%%keV'T
} jJw
for(int i=0;i<nEndPos.length-1;i++) :-#7j}
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{ T59FRX
nEndPos = nStartPos[i+1]; "=n%L +6%
} nTc#I~\
nEndPos[nEndPos.length-1] = nFileLength; BKO^ux%
} cWyf04-?
} \BH?GMoP
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//启动子线程 Y'jgp Vt
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 9mp`LT
for(int i=0;i<nStartPos.length;i++)
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{ n:B){'S
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), A W6B[
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), y`8U0TE3R
nStartPos,nEndPos,i); V~#5^PF{
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); I$S*elveG
fileSplitterFetch.start(); Du
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} "=+i~N#Sc
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), WF*j^ %5
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ?$ov9U_
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Dq%}({+
nEndPos = " + nFileLength); )7!,_r
// fileSplitterFetch[nPos.length-1].start(); %QrO Es
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//等待子线程结束 M:(.aEe
//int count = 0; Nt_sV7zzb
//是否结束while循环 c$)>$&([
boolean breakWhile = false; !( +M
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while(!bStop) }f_@@#KB?
{ RhmkpboucC
write_nPos(); J @~g>
Utility.sleep(500); o3\^9-jmp
breakWhile = true; uPbdzUk$
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for(int i=0;i<nStartPos.length;i++) \!jz1`]&{
{ =jh^mD&'
if(!fileSplitterFetch.bDownOver) Mv/ SU">F
{ nh0gT>a>@
breakWhile = false; <+r~?X_
break; p5OoDo
} `Ix`/k}
} !5h-$;
if(breakWhile) 'AWWdz
break; zt9A-%
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//count++; :-U&_%#w
//if(count>4) =bP<cC=3b
// siteStop(); Y@q9
} oiR9NB&<
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System.err.println("文件下载结束!"); vol (%wB
} },}g](!m
catch(Exception e){e.printStackTrace ();} ]8OmYU%6V
} h+!R)q8M
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//获得文件长度 hP{+`\&<f
public long getFileSize() k,'MmAz
{ 0~_I9|FN
int nFileLength = -1; k:iy()n[
try{ XYD-5pG
URL url = new URL(siteInfoBean.getSSiteURL()); J#j3?qrxu
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); <Piq?&VX[
httpConnection.setRequestProperty("User-Agent","NetFox"); ZybfqBTD&c
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int responseCode=httpConnection.getResponseCode(); of7p~{3H
if(responseCode>=400) 6&6dd_K(
{ ? p[Rv
processErrorCode(responseCode); S76MY&Vx23
return -2; //-2 represent access is error LkK&<z
} Wi5Dl=
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String sHeader; T*Ge67
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for(int i=1;;i++) =d<~:!)
{ m+7%]$
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); !B#lZjW#
//Utility.log(in.readLine()); !2&)6SL/
sHeader=httpConnection.getHeaderFieldKey(i); Khv}q.)F
if(sHeader!=null) {*g{9`
{ F4"bMN
if(sHeader.equals("Content-Length")) P_mP ^L
{ `-cw[@uD
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); `'P&={p8
break; (nBh6u*
} -$#2?/uqC
} 4bdCbI
else J(~1mIJjC
break; i4WHjeo\
} O[L#|_BnEO
} HE_UHv
catch(IOException e){e.printStackTrace ();} (E,[Ad,$
catch(Exception e){e.printStackTrace ();} Unq~lt%2
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Utility.log(nFileLength); VM&Ref4
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return nFileLength; Hi$N"16A5z
} LH @B\ mS
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//保存下载信息(文件指针位置) .q:6F*,1M
private void write_nPos()
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{ Q3$DX,8?
try{ H d7Vp:KM
output = new DataOutputStream(new FileOutputStream(tmpFile)); v$JW7CKA
output.writeInt(nStartPos.length); v+trHdSBYE
for(int i=0;i<nStartPos.length;i++) cUd>ahv
{ 8'qlg|{!~
// output.writeLong(nPos); j"pyK@v2B
output.writeLong(fileSplitterFetch.nStartPos); (Uu5$q(
output.writeLong(fileSplitterFetch.nEndPos); .V}bfd[k$
} i eWXr4@:
output.close(); XhWo~zh"
} =oiz@Q @H
catch(IOException e){e.printStackTrace ();} y0?HZ Xq
catch(Exception e){e.printStackTrace ();} qe
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} cH:&S=>h
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//读取保存的下载信息(文件指针位置) o@[o6.B<
private void read_nPos() #4"eQ*.*"
{ r4X\/
try{ 5.oY$tb(
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); :J x%K
int nCount = input.readInt(); &
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nStartPos = new long[nCount]; Ku uiU=
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nEndPos = new long[nCount]; |yp^T
for(int i=0;i<nStartPos.length;i++) )Spa
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{ (]&B'1b
nStartPos = input.readLong(); "cjD-42
nEndPos = input.readLong(); Zy?!;`c*{
} GNB'.tJ:0Y
input.close(); :9x]5;ma
} i-p,x0th
catch(IOException e){e.printStackTrace ();} f
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catch(Exception e){e.printStackTrace ();} p0l.f`B
} VQ2'a/s
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private void processErrorCode(int nErrorCode) $nIE;idk
{ )"{}L.gC6
System.err.println("Error Code : " + nErrorCode); }vgM$o
} +;pw^QB
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//停止文件下载 saQo]6#
public void siteStop() iyUnxqP
{ ,+C?UW
bStop = true; (G$Q\>
for(int i=0;i<nStartPos.length;i++) =,qY\@fq
fileSplitterFetch.splitterStop(); eOXu^M>:F
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} 9PG{>W$M
} gVJh@]8)
//负责部分文件的抓取 "WXUz
**FileSplitterFetch.java -?{g{6
*/ qx*b\6Rt
package NetFox; [0kZyjCq@
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import java.io.*; {9j0k`A
import java.net.*; P%vouC0W
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public class FileSplitterFetch extends Thread { >Lo'H}[pF
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String sURL; //File URL H0t#J
long nStartPos; //File Snippet Start Position -=UvOzw
long nEndPos; //File Snippet End Position K9VP@[zbJ
int nThreadID; //Thread's ID Yb[)ETf^
boolean bDownOver = false; //Downing is over pa?AKj]
boolean bStop = false; //Stop identical rTJqw@]#WH
FileAccessI fileAccessI = null; //File Access interface H+gB|
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException };Df ><
{ 7`)RBhGB
this.sURL = sURL; 3|)cT1ej
this.nStartPos = nStart; \S?-[v*{
this.nEndPos = nEnd; 8 K)GH:a
nThreadID = id; ]+w 27!
fileAccessI = new FileAccessI(sName,nStartPos);//定位 jG}nOI
} f8f3[O!x
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public void run() WHLTJ]OB
{ d#ab"&$bv
while(nStartPos < nEndPos && !bStop) )/OIzbA3#
{ [{&OcEf
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try{ Z$('MQ|Ur
URL url = new URL(sURL); YbZ?["S&
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 3Y +;8ld
httpConnection.setRequestProperty("User-Agent","NetFox"); tF<&R&=
String sProperty = "bytes="+nStartPos+"-"; gdyWuOxa|
httpConnection.setRequestProperty("RANGE",sProperty); Zm6jF
Utility.log(sProperty); 'r -B%D=
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InputStream input = httpConnection.getInputStream(); auY?Cj'"fs
//logResponseHead(httpConnection); Klu0m~X@
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byte[] b = new byte[1024]; z`u$C+Ov
int nRead; h+YPyeAs
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) !g|[A7<|
{ '*&V7:
nStartPos += fileAccessI.write(b,0,nRead); wLE|J9t%Ea
//if(nThreadID == 1) W>b\O">
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); v=&xiw