/* 2Z20E$Cb
**SiteFileFetch.java f|u#2!7
*/ 7JSNYTH
package NetFox; iNwqF0
import java.io.*; FI"`DMb}
import java.net.*; s1?[7yC
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public class SiteFileFetch extends Thread { m Sk5u 7
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SiteInfoBean siteInfoBean = null; //文件信息Bean xkOpa,=FI
long[] nStartPos; //开始位置 y4+;z2'>
long[] nEndPos; //结束位置 RpLE
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 Lg"C ]
long nFileLength; //文件长度 e.c3nKXZ q
boolean bFirst = true; //是否第一次取文件 j5@:a
boolean bStop = false; //停止标志 W2uOR{
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File tmpFile; //文件下载的临时信息 :!zl^J;
DataOutputStream output; //输出到文件的输出流 5q"ON)x
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) _)]CzBRq\6
public SiteFileFetch(SiteInfoBean bean) throws IOException !x'/9^i~v
{ |lv|!]qAma
siteInfoBean = bean; XD"_Iq!
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); d#2$!z#
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ')GSAY7
if(tmpFile.exists ()) 'l,V*5L
{ u^029sH6j
bFirst = false; d;n."+=[x
read_nPos(); a~8[<F omj
} a#T]*(Yq)
else Nan[<
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nStartPos = new long[bean.getNSplitter()]; %e&9.
nEndPos = new long[bean.getNSplitter()]; y^o@"IYu3
} v9T_&
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} s`>[F@N7.o
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public void run() Rb3V^;i
{ u+{a8=
//获得文件长度 i1RiGS
//分割文件 }jill+]
//实例FileSplitterFetch A=Ss6-Je
//启动FileSplitterFetch线程 ^_lzZOhG
//等待子线程返回 |F#1C9]P
try{ )Wb0u0)_
if(bFirst) 5E notp[
{ Ie%EH
nFileLength = getFileSize(); /r_~:3F
if(nFileLength == -1) H.UX,O@
{ n("0%@ov
System.err.println("File Length is not known!"); " LJq%E
} XkyKBg-
else if(nFileLength == -2) n@ G[
{ >ooZj9:'
System.err.println("File is not access!"); qTQBt}
} Z(!00^
else yv)ux:P&+
{ sN5B7)Vc
for(int i=0;i<nStartPos.length;i++) CW<N: F.9
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); W0}B'VS.I
} qoAj]
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for(int i=0;i<nEndPos.length-1;i++) c_elShK8#
{ \rPbK+G.
nEndPos = nStartPos[i+1]; O(_[ayE
} |hr]>P1
nEndPos[nEndPos.length-1] = nFileLength; (e"iO`H
} ^n+ !4(@=
} *YlV-C<}W"
>$ 2V%};
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//启动子线程 SB)5@
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ^i:B+
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for(int i=0;i<nStartPos.length;i++) hdVdcnM
{ (dv]=5""
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Qqlup
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ":_vK}5
nStartPos,nEndPos,i); 2=_gf
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); f47M#UC
fileSplitterFetch.start(); zhf.NCSt(
} R"K#7{p9
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), GaSPJt
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); c*@G_rb
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 8n>9;D5n
nEndPos = " + nFileLength); +5XpzZ{#Wa
// fileSplitterFetch[nPos.length-1].start(); /B}lO0]:
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//等待子线程结束 jRL<JZ1N
//int count = 0; H#ncM~y*
//是否结束while循环 L5,NP5RC
boolean breakWhile = false; 5ls6t{Ci
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while(!bStop) H<3I 5Kgt
{ 9V5-%Iv
write_nPos(); ooQQ-?"m
Utility.sleep(500); :>=\. \
breakWhile = true; Q1+dCCY#F
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for(int i=0;i<nStartPos.length;i++) O?|gp<=d
{ /i77
if(!fileSplitterFetch.bDownOver) #f+$Ddg*
{ =kuMWaD
breakWhile = false; QqU!Najf
break; [KxF'm z9
} C9t4#"
} 7a~X:#
if(breakWhile) SCz318n
break; KRA/MQ^7~U
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//count++; [ 1u-Q%?#
//if(count>4) Ih"XV
// siteStop(); cCxBzkH6
} p3^m9J
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System.err.println("文件下载结束!"); F|!){=
} 1@-Ns
catch(Exception e){e.printStackTrace ();} \P6$mh\T
} L+i(TM=
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//获得文件长度 LSRk7'0
public long getFileSize() o !U
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int nFileLength = -1; g
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try{ ){b@}13cF
URL url = new URL(siteInfoBean.getSSiteURL()); HZ:6zH
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); \*<d{gZ~
httpConnection.setRequestProperty("User-Agent","NetFox"); &oX>*6L
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)h)]SF}
int responseCode=httpConnection.getResponseCode(); (}2~<
if(responseCode>=400) % S os
{ .*)2SNH
processErrorCode(responseCode); a8UwhjFO
return -2; //-2 represent access is error 7K98#;a)5
} zld#qG6
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String sHeader; mVpMh#zw
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for(int i=1;;i++) {.INnFGP@)
{ nX`u[ks
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ]@u6HH~^
//Utility.log(in.readLine()); +csi[c)3E
sHeader=httpConnection.getHeaderFieldKey(i); #%h-[/
if(sHeader!=null) h3xAJ!
{ *vwbgJG! *
if(sHeader.equals("Content-Length")) 73\JwOn~
{ &eX!#nQ_.
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); R)m'lMi|
break; \r+8qC[,
} +O?KNZ
} 7](KV" %V
else ~o~!+`@q
break; pWJFz-
} V:
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} <d$x.in
catch(IOException e){e.printStackTrace ();} XcUwr
catch(Exception e){e.printStackTrace ();} O*FUTZd( J
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Utility.log(nFileLength); &n8_0|gK
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return nFileLength; ~
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} rr02pM0
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//保存下载信息(文件指针位置) >E{";C)
private void write_nPos() 7Bd-!$j+
{ KJaXg;,H
try{ wMg0>
output = new DataOutputStream(new FileOutputStream(tmpFile)); 8b;1FQ'
output.writeInt(nStartPos.length); f@|A[>"V
for(int i=0;i<nStartPos.length;i++) 6"&6`f
{ "ozr+:#\
// output.writeLong(nPos); c2'Lfgx4
output.writeLong(fileSplitterFetch.nStartPos); #W.#Hjpp
output.writeLong(fileSplitterFetch.nEndPos); 2Tp1n8FV
} U!*M*s
output.close(); Xx0hc 8qd
} U"^kH|
catch(IOException e){e.printStackTrace ();} #PH~1`vl
catch(Exception e){e.printStackTrace ();} lHPd"3HDK
} f\sQO&
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//读取保存的下载信息(文件指针位置) g'n7T|h
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private void read_nPos() 9\mLW"
{ Vg>dI&O
try{ ]rH\`0
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); QLiu2U o
int nCount = input.readInt(); 8y.wSu
nStartPos = new long[nCount]; gf
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nEndPos = new long[nCount]; B][U4WJ)
for(int i=0;i<nStartPos.length;i++) |Sy<@oq
{ Vy Xhl;
nStartPos = input.readLong(); fY51:0{
nEndPos = input.readLong(); ?IqQ-C)6D
} OuID%p"O
input.close(); Y4`}y-'d
} Tz8PS k1[
catch(IOException e){e.printStackTrace ();} 2q=AEv/
catch(Exception e){e.printStackTrace ();} PGhY>$q>b
} <oT^ A|JFj
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private void processErrorCode(int nErrorCode) 8m\7*l^D:
{ L\xk:j1[
System.err.println("Error Code : " + nErrorCode); Ez
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} vyK7I%T'R
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//停止文件下载 $j5K8Ad
public void siteStop() emqZztccZ
{ ^6MU
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bStop = true; p'*>vk
for(int i=0;i<nStartPos.length;i++) G\Cp7:j}
fileSplitterFetch.splitterStop(); vgH3<pDiU6
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} (a.z9nqGA
} w[zjerH3
//负责部分文件的抓取 75f"'nJ)
**FileSplitterFetch.java diL+:H
*/ 1{ ~#H<K
package NetFox; p.v0D:@&
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import java.io.*; "55skmD.P
import java.net.*; RI
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public class FileSplitterFetch extends Thread { vNV/eB8#S
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String sURL; //File URL fk6%XO
long nStartPos; //File Snippet Start Position A+ZK4]xb
long nEndPos; //File Snippet End Position la0BiLzb]
int nThreadID; //Thread's ID &:9cAIe]H
boolean bDownOver = false; //Downing is over =.f-w0V
boolean bStop = false; //Stop identical ;c-(ObSm
FileAccessI fileAccessI = null; //File Access interface K6v6ynp/
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 9kN}c<o
{ B(LWdap~
this.sURL = sURL; ~:kZgUP_f
this.nStartPos = nStart; 42{Ew8
this.nEndPos = nEnd; m ZtCL
nThreadID = id; #%iDT6
fileAccessI = new FileAccessI(sName,nStartPos);//定位 eL10Q(;P`
} 3G,Oba[$<
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public void run() tZ:_ag)o
{ ^ =bu(L
while(nStartPos < nEndPos && !bStop) fi-WZ
{ a
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try{ q0i(i.h
URL url = new URL(sURL); [,t*Pfq'W8
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); gPNZF\ r
httpConnection.setRequestProperty("User-Agent","NetFox"); (6?9B lH~
String sProperty = "bytes="+nStartPos+"-"; q>_/u"
httpConnection.setRequestProperty("RANGE",sProperty); R}
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Utility.log(sProperty); kO.%9wFbz
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InputStream input = httpConnection.getInputStream(); YSr9VpqWV
//logResponseHead(httpConnection); Xb:;</
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byte[] b = new byte[1024]; f=(?JT
int nRead; ][gq#Vx@
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 3GaQk-
{ 5,3'=mA6
nStartPos += fileAccessI.write(b,0,nRead); "Gfh ,e
//if(nThreadID == 1) q+H%)kF
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 6]V4muz#c
} 8##-EN;ag
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Utility.log("Thread " + nThreadID + " is over!"); 9oRy)_5Z(=
bDownOver = true; /[a~3^Gs^
//nPos = fileAccessI.write (b,0,nRead); Tzt8h\Q^z
} -[*,^Ti`
catch(Exception e){e.printStackTrace ();} c(3~0Yr
} &oP+$;Y
} 3EV;LH L
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//打印回应的头信息 R@58*c:U(
public void logResponseHead(HttpURLConnection con) $:=A'd2
{ 7]U"Z*
for(int i=1;;i++) h;C5hU4P
{ 35Ij
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String header=con.getHeaderFieldKey(i); 54gBJEhg
if(header!=null) $*^kY;
//responseHeaders.put(header,httpConnection.getHeaderField(header)); ?Nup1!D
Utility.log(header+" : "+con.getHeaderField(header)); 2KB\1&