/* >ZRCM
**SiteFileFetch.java #63)I9>
*/ nV`n=x
package NetFox; 5e)2Jt:
import java.io.*; ;B Lw?kf
import java.net.*; GSlvT:k
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public class SiteFileFetch extends Thread { ,_SE!iL
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SiteInfoBean siteInfoBean = null; //文件信息Bean W=QT-4
long[] nStartPos; //开始位置 S
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long[] nEndPos; //结束位置 Ug}dw a
FileSplitterFetch[] fileSplitterFetch; //子线程对象 v67utISNI
long nFileLength; //文件长度 @:2<cn`
boolean bFirst = true; //是否第一次取文件 r0MUv}p#|L
boolean bStop = false; //停止标志 =yT3#A~<G
File tmpFile; //文件下载的临时信息 C1V:_-
DataOutputStream output; //输出到文件的输出流 (i3V[H
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Cd Bsd
public SiteFileFetch(SiteInfoBean bean) throws IOException p~v
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{ W~" 'a9H/
siteInfoBean = bean; gteG*p i
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 8]G
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); zY11.!2
if(tmpFile.exists ()) ~Qg:_ @@\
{ |ZJ<J)y
bFirst = false; /-C`*P=:u
read_nPos(); RC[mpR;2
} .~3s~y*s
else ,Z3 (`ftC
{ B7'rbc'
nStartPos = new long[bean.getNSplitter()]; f{i~hVF
nEndPos = new long[bean.getNSplitter()]; v@xbur\L
} `Zdeq.R]
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} -'!K("
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public void run() kU75
{ rnOg;|u8
//获得文件长度 vk:k ~
//分割文件 YGdzA]3>
//实例FileSplitterFetch 0\B31=N(
//启动FileSplitterFetch线程 #1,"^k^
//等待子线程返回 0c-.h
try{ A'zXbp:%
if(bFirst) {zckY
{ 4J~ZZ
nFileLength = getFileSize(); bUcEQGHcZ=
if(nFileLength == -1) bU3P;a(
{ {4C/ZA{|l
System.err.println("File Length is not known!"); crwui 8
} "r+ v^
else if(nFileLength == -2) R5"5Z?'
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System.err.println("File is not access!"); !^Ly#$-X
} 6@rebe!&=
else YK{E=<:
{ l-v(~u7
for(int i=0;i<nStartPos.length;i++) (GCe D-
{ `F(ghC
nStartPos = (long)(i*(nFileLength/nStartPos.length)); tz^2?wO
} ',_E;(
for(int i=0;i<nEndPos.length-1;i++) Tr6J+hS
{ %&Fsk]T%:
nEndPos = nStartPos[i+1]; z+5ZUS2~&
} `)aIFAW
nEndPos[nEndPos.length-1] = nFileLength; -%G}T}"_
} t| cL!
} If*+yr|
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//启动子线程 HxAN&g*:
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; fO UW{s
for(int i=0;i<nStartPos.length;i++) -qJ%31Mr#
{ :lfUVa{HN
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), prdc}~J8{
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), RV_(T+
nStartPos,nEndPos,i); %U
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); cWU9mzsE
fileSplitterFetch.start(); *+UgrsRk
} E2nsBP=5C
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), <i$ud&D
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ob_*fP
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", pYBY"r
nEndPos = " + nFileLength); <E&8g[x6
// fileSplitterFetch[nPos.length-1].start(); 6OPYq*|
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//等待子线程结束 C$x
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//int count = 0; @ L=dcO{r
//是否结束while循环 K2o\+t
boolean breakWhile = false; US'rhSV
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while(!bStop) tb1w 6jaU
{ -Pt']07E
write_nPos(); = }!4%.$
Utility.sleep(500); IQ]tcSQl
breakWhile = true; X+%5q =N
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for(int i=0;i<nStartPos.length;i++) 05ZF>`g*
{ 8WP|cF]
if(!fileSplitterFetch.bDownOver) pIhy3@bY
{ "q]r{0
breakWhile = false; g;eoH
break; 1"fbQ^4`
} T!YfCw.HZ
} ?.~hex#M@
if(breakWhile) = lMs1}S9
break; T*"*##c
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//count++; Q~-M B]'
//if(count>4) RQ*oTsq
// siteStop(); EG#mNpxE
} *%aWGAu:
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System.err.println("文件下载结束!"); KM9)
} *Z}9S9YtN
catch(Exception e){e.printStackTrace ();} gNaB^IY
} 8r\;8all
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//获得文件长度 0ME.O+
public long getFileSize() 2S@aG%-)
{ gw_]Y^U
int nFileLength = -1; Ch0t'
try{ gCP f1z
URL url = new URL(siteInfoBean.getSSiteURL()); ZQN%!2
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); p->b Vt
httpConnection.setRequestProperty("User-Agent","NetFox"); +'ADN!(B_
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int responseCode=httpConnection.getResponseCode(); %|o2d&i
if(responseCode>=400) ~&%&Z
{ )Rj,PF-9Z[
processErrorCode(responseCode); Y q(CD!
return -2; //-2 represent access is error aTi,gJ;*
} @w
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String sHeader; zi?G
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for(int i=1;;i++) .[:2M9Rx
{ VI(2/**
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); *U:0c
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//Utility.log(in.readLine()); !wr2OxK*
sHeader=httpConnection.getHeaderFieldKey(i); c0.? d]
if(sHeader!=null) !McRtxq?~
{ `Qxdb1>mjY
if(sHeader.equals("Content-Length")) .?dYY;P
{ W_FN*Er
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); !K8V":1du#
break; )ad6>Y
} T(q/$p&q
} .]y"04@]
else )o N#%%SB<
break; *$*V#,V-
} b3^d!#KVM
} JL:\\JT.
catch(IOException e){e.printStackTrace ();} ,k+F8{Q.
catch(Exception e){e.printStackTrace ();} ?:c:D5N
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Utility.log(nFileLength); D]*<J"/]d
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return nFileLength; GI[XcK^*w
} 6$x9@x8
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//保存下载信息(文件指针位置) T@gm0igW/;
private void write_nPos() ?D9>N'yH8
{ O]-s(8Oo3
try{ 2/f!{lz ](
output = new DataOutputStream(new FileOutputStream(tmpFile)); BQF7S<O+
output.writeInt(nStartPos.length); "iPX>{'En
for(int i=0;i<nStartPos.length;i++) mY0FewwTy
{ *]+5T-R% $
// output.writeLong(nPos); rpMjDjW
output.writeLong(fileSplitterFetch.nStartPos); Og/@w&