/* })Ix.!p
**SiteFileFetch.java t ;bZc s
*/ ajg7xF{l)
package NetFox; |rG8E;>
import java.io.*; UzP@{?
import java.net.*; :"h
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public class SiteFileFetch extends Thread { w;g)Iy6x
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SiteInfoBean siteInfoBean = null; //文件信息Bean HQjxJd5P
long[] nStartPos; //开始位置 (Qw`%B
long[] nEndPos; //结束位置 ~QQEHx\4zZ
FileSplitterFetch[] fileSplitterFetch; //子线程对象 50O7=
long nFileLength; //文件长度 ([z<TS#Md
boolean bFirst = true; //是否第一次取文件 H"kc^G+(R"
boolean bStop = false; //停止标志 O#<|[Dzw
File tmpFile; //文件下载的临时信息 _oYA;O
DataOutputStream output; //输出到文件的输出流 +Px<DX+
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}
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) )4 VLm
public SiteFileFetch(SiteInfoBean bean) throws IOException [U_Q 2<H
{ 4IH0un
siteInfoBean = bean; 0Te)s3X
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); q|de*~@-P
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); x(T!I&i={
if(tmpFile.exists ()) T/X?ZK(T
{ I3F6-gH
bFirst = false; 6jQ&dN{=qB
read_nPos(); ;+#za?w
} M,=@|U/B
else {g23[$X]N
{ I{Y
{
nStartPos = new long[bean.getNSplitter()]; kM}ic(K
nEndPos = new long[bean.getNSplitter()]; Z:r$;`K/
} oqQ? 2k<@
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} Eusf gU:
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public void run() (PE8H~d
{ d[qEP6B
//获得文件长度 %s&E-*X
//分割文件 &,6y(-
//实例FileSplitterFetch t8a@L(J$
//启动FileSplitterFetch线程 UH.}B3H
//等待子线程返回 xhp-4
try{ SFXfo1dqH
if(bFirst) [f0oB$
{ )e <! =S
nFileLength = getFileSize(); r5fz6"
if(nFileLength == -1) :p*ojl|
{ dcc%G7w
System.err.println("File Length is not known!"); >(1_Dn\
} ^~*[~
else if(nFileLength == -2) OL6xMToP
{ Xk$l-Zfse
System.err.println("File is not access!"); g}s-v?+
} IJb1)
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else CzDR% v x
{ V+@%(x@D_
for(int i=0;i<nStartPos.length;i++)
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{ Bb2r95h}^
nStartPos = (long)(i*(nFileLength/nStartPos.length)); aZ`_W|
} olQ8s*
for(int i=0;i<nEndPos.length-1;i++) AD4L`0D
{ 6@Z'fT4
nEndPos = nStartPos[i+1]; s5Bmv\e.i5
} 4jyr\=42F'
nEndPos[nEndPos.length-1] = nFileLength; W;)FNP|MT
} E]U3O>hf
} +H m+#o
cM7k) {
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//启动子线程 8BoT%kVeJv
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 6XxG1]84
for(int i=0;i<nStartPos.length;i++) h1UlLy8
{ KE)D =P
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 3I{ta/(
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 1\.zOq#
nStartPos,nEndPos,i); P.H/H04+
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); TF iM[
fileSplitterFetch.start(); &s}@7htE
} %(7wZ0Z
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), <:yq~?
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 6^z\;,p
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", i[BR(D&l_p
nEndPos = " + nFileLength); _XO)`D~
// fileSplitterFetch[nPos.length-1].start(); ?M{6U[?
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//等待子线程结束 j[=_1~u}
//int count = 0; y:6'&`L
//是否结束while循环 _)Z7Le:f!
boolean breakWhile = false; 1b]PCNz
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while(!bStop) GPqB\bxb'
{ A(@gv8e[H^
write_nPos(); UEYM;$_@4o
Utility.sleep(500); <[B[
breakWhile = true; =rO>b{,hs
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for(int i=0;i<nStartPos.length;i++) 8iH;GFNJ7'
{ L)nVpqm
if(!fileSplitterFetch.bDownOver) BnnUUaE
{ q?]@' ^:;
breakWhile = false; <W[8k-yOV`
break; sq6% =(q(?
} Sph"w08
} o_Kc nVQ\
if(breakWhile) -O>mY)
break; mP
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//count++; Wv*BwiQ
//if(count>4) $^D(%
// siteStop(); (>5VS
} yLIj4bf
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System.err.println("文件下载结束!"); 4l!Yop0h
} Y l3[~S
catch(Exception e){e.printStackTrace ();} LsD9hb7
} ]!J3?G
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//获得文件长度 xW;[}t-QS
public long getFileSize() G~hILW^
{ > FcA,
int nFileLength = -1; wj5s5dH
try{
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URL url = new URL(siteInfoBean.getSSiteURL()); qsRfG~Cg
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); "91Atb;hJ
httpConnection.setRequestProperty("User-Agent","NetFox"); pz6-
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int responseCode=httpConnection.getResponseCode(); eHyuO)(xH1
if(responseCode>=400) ]4Yb$e`
{ V5@[7ncVf
processErrorCode(responseCode); ue:P#] tx
return -2; //-2 represent access is error vKOn7
} 6{r[ Dq
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String sHeader; ieLN;)Iy^
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for(int i=1;;i++) E=~WQ13Q
{ 4k?JxA)
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); `lh?Z3W
//Utility.log(in.readLine()); K]*ERAfM%m
sHeader=httpConnection.getHeaderFieldKey(i); !J(,M)p!
if(sHeader!=null) LuQ
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{ bme#G{[)Y
if(sHeader.equals("Content-Length")) <21^{ yt1
{ `*9FKs
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); *_rGBW
break; M~Dc5\T
} 0Lz56e'j
} Q/`o6xv
else 1xV1#'@[Jd
break; ef;="N
}
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} 19{?w6G<k
catch(IOException e){e.printStackTrace ();} b/}0
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catch(Exception e){e.printStackTrace ();} &r%^wfp
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Utility.log(nFileLength); ^X'7>{7Io
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return nFileLength; _7HJ'
} ^52R`{
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//保存下载信息(文件指针位置) M@[gT?mv1
private void write_nPos() ]@T `qR
{ X1qj
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try{ N ^`Efpvg
output = new DataOutputStream(new FileOutputStream(tmpFile)); cDyC&}:f
output.writeInt(nStartPos.length); J|8YB3K,
for(int i=0;i<nStartPos.length;i++) y'wW2U/1-
{ KCT"a:\
// output.writeLong(nPos); +Z(VWu6
output.writeLong(fileSplitterFetch.nStartPos); #X_ M
output.writeLong(fileSplitterFetch.nEndPos); {v/6|
} <rmV$_
output.close(); @<JQn^M
} :2gO)
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catch(IOException e){e.printStackTrace ();} ]-LE'Px|
catch(Exception e){e.printStackTrace ();} 5)i0g
} I
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//读取保存的下载信息(文件指针位置) {X"]92+
private void read_nPos() dg8\(G
{ w~?eX/;
try{ bdhgHjz
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); . L%@/(r
int nCount = input.readInt(); z{WqICnb
nStartPos = new long[nCount]; ToM*tXj
nEndPos = new long[nCount]; 640V&<+v
for(int i=0;i<nStartPos.length;i++) TBYL~QQD\C
{ L(S.
nStartPos = input.readLong(); Fa^]\:
nEndPos = input.readLong(); ZWEzL$VWi
} ub&29Qte
input.close(); [6N39G$
} gcF><i6
catch(IOException e){e.printStackTrace ();} bZfJG^3
catch(Exception e){e.printStackTrace ();} w2AWdO6
} @eU/g![u
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private void processErrorCode(int nErrorCode) >(a_9l;q
{ IvH+94[)
System.err.println("Error Code : " + nErrorCode); 6E4 L4Vb
} F\<i>LWT'
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//停止文件下载 ^Tmmx_Xw
public void siteStop() NebZGD2K
{ v0H#\p
bStop = true; b7mP~]V
for(int i=0;i<nStartPos.length;i++) _?<Fc8F
fileSplitterFetch.splitterStop(); Vd~k4
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} <0}'#9>O
} i[J',
//负责部分文件的抓取 MLX.MUS
**FileSplitterFetch.java Lq^/Z4L
*/ <'33!8
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package NetFox; (FHh,y~v
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import java.io.*; ^;bkU|(`6
import java.net.*; ]f?LQCTq<b
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public class FileSplitterFetch extends Thread { ]=Q'1%
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String sURL; //File URL 50A_+f.7%
long nStartPos; //File Snippet Start Position 0Jr<>7Q1
long nEndPos; //File Snippet End Position X)+N>8o?N
int nThreadID; //Thread's ID fCR;Fk2B
boolean bDownOver = false; //Downing is over i`;I"oY4
boolean bStop = false; //Stop identical duCm+4,.
FileAccessI fileAccessI = null; //File Access interface :1Cc~+]w(u
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException {[+gM?
{ LtBH4A
this.sURL = sURL; HS7!O
this.nStartPos = nStart; EC0auB7G
this.nEndPos = nEnd; +FR"Gt$g
nThreadID = id; Kkm7L-
fileAccessI = new FileAccessI(sName,nStartPos);//定位 I(e>ff
} ';%g^!lM
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public void run() [(mq8Nb
{ $n W>]S\|
while(nStartPos < nEndPos && !bStop) /e\dsC{uJ
{ y:L|]p}huE
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try{ "7DPsPs
URL url = new URL(sURL); [B[ J%?NS
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); "O`;zC
httpConnection.setRequestProperty("User-Agent","NetFox"); ?W(f%/B#
String sProperty = "bytes="+nStartPos+"-"; yLP0w^Q
httpConnection.setRequestProperty("RANGE",sProperty); EMo6$(
Utility.log(sProperty); "M
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InputStream input = httpConnection.getInputStream(); %j,Ny}a
//logResponseHead(httpConnection); 7blZAA?-
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byte[] b = new byte[1024]; uH#NJoRO
int nRead; =
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while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 3^\y>
{ Y'P8 `$
nStartPos += fileAccessI.write(b,0,nRead); g6farLBF
//if(nThreadID == 1) S.z ;Bm
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 7)T+!>
}
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Utility.log("Thread " + nThreadID + " is over!"); *=8)]_=f
bDownOver = true; +2?[=g4;}
//nPos = fileAccessI.write (b,0,nRead); 4 R]|
} >h9U~#G=
catch(Exception e){e.printStackTrace ();} tv0xfAV
} g 0L 4
} UpITx]y?"m
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