/* 1i&|}"
**SiteFileFetch.java b}&.IJ&40j
*/ /@64xrvIl=
package NetFox; VwKfM MI8
import java.io.*; I7HGV(
import java.net.*; T"3:dkQw
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public class SiteFileFetch extends Thread { n_(f"Uv
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SiteInfoBean siteInfoBean = null; //文件信息Bean R|92T*h
long[] nStartPos; //开始位置 ;`h$xB(
long[] nEndPos; //结束位置 lNz1|nS(Kd
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Y;"jsK{$
long nFileLength; //文件长度 PJT$9f~3;.
boolean bFirst = true; //是否第一次取文件
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boolean bStop = false; //停止标志 Bbtc[@"X
File tmpFile; //文件下载的临时信息 L d{`k
DataOutputStream output; //输出到文件的输出流 |AXV4{j_i
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ~ike&k{
public SiteFileFetch(SiteInfoBean bean) throws IOException ftz-l&5
{ [P|kY
siteInfoBean = bean; ibn\&}1
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); JS/~6'uB
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); oB(9{6@N
if(tmpFile.exists ()) #O{cplh,
{ c!GJS`/
bFirst = false; ^{YK'60
read_nPos(); {v"Y!/
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}
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else e8M0Lz#}
{ DVt^O[
nStartPos = new long[bean.getNSplitter()]; D`fIw`
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nEndPos = new long[bean.getNSplitter()]; _>bk'V7
} TK0WfWch
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} N8DouDq
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public void run() .7M.bpmqE
{ qDcoccEf
//获得文件长度 $b[Ha{9(v
//分割文件 R8 LHwRQ
//实例FileSplitterFetch Jl1\*1"
//启动FileSplitterFetch线程 &Ez+4.srkh
//等待子线程返回 Q!r&vQ/g
try{ `(/xj{"Fr}
if(bFirst) RXo 6y(^
{ '#>Fe`[
nFileLength = getFileSize(); `dWnu3r;
if(nFileLength == -1) ,4=mlte"
{ $wyPGok
System.err.println("File Length is not known!"); 4,f`C0>"
} 2.^CIJc
else if(nFileLength == -2) CfVL'
{ &?TXsxf1Zh
System.err.println("File is not access!"); q8uq%wf
} v(6[z)A0
else * \B(-
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for(int i=0;i<nStartPos.length;i++) `(DHa=s1
{ mM~&mAa+Z
nStartPos = (long)(i*(nFileLength/nStartPos.length)); JmeE}:5lpj
} U5OFw+J
for(int i=0;i<nEndPos.length-1;i++) #M<YNuE#"
{ F'"-aB ~
nEndPos = nStartPos[i+1]; S;u.Ds&
} HCx0'|J
nEndPos[nEndPos.length-1] = nFileLength; 8Zy*#[-
} hgbf"J6V8
} \6bvk _
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//启动子线程 EPA
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ^/cqE[V~,
for(int i=0;i<nStartPos.length;i++) +p&zM3:9w
{ \T!,Z;zK
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %zo
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), [mj=m?j
nStartPos,nEndPos,i); cB_9@0r[S
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); J@QOF+ &
fileSplitterFetch.start(); A'Z!l20_
} k2fJ
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), gvPHB+#A
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); S(^YTb7
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Y]^*mc0fE
nEndPos = " + nFileLength); eA{A3.f"Hz
// fileSplitterFetch[nPos.length-1].start(); 72/ bC
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//等待子线程结束 |onLJY7)
//int count = 0; {NcJL< ;tS
//是否结束while循环 VbTX;?
boolean breakWhile = false; |`pBI0Sjo
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while(!bStop) 5!pNo*QK
{ xAO\' #m
write_nPos(); }@/Ox
Utility.sleep(500); @' %XdH
breakWhile = true; epG]$T![
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for(int i=0;i<nStartPos.length;i++) JG&E"j#q
{ &
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if(!fileSplitterFetch.bDownOver) AZ4:3}
{
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breakWhile = false; 9Y2.ob!$}
break; D=Nt0y
} oB>#P-V
} dcTZL$
if(breakWhile) #xq3)B
break; 2}bXX'Y
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//count++; ZoYllk
//if(count>4) u~VXe
// siteStop(); MmU`i ,z
} qx9;"Ut
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System.err.println("文件下载结束!"); YMy**
} W#kyD)(F
catch(Exception e){e.printStackTrace ();} iQ1[60?)T
} VC_F
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//获得文件长度 9$qw&j[
public long getFileSize() 2yD ?f8P4
{ Vq/hk
int nFileLength = -1; 1|s`z
try{ 0v6Z4Ahpo
URL url = new URL(siteInfoBean.getSSiteURL()); $ %|b6Gr/&
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ;CoD5F!
httpConnection.setRequestProperty("User-Agent","NetFox"); T00sYoK
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int responseCode=httpConnection.getResponseCode(); Fp"c {
if(responseCode>=400) 9b&;4Yq!f
{ b$pCp`/MT
processErrorCode(responseCode); lp5'-Jo
return -2; //-2 represent access is error k^cnNx
} O'xp" e,
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String sHeader; 3q@H8%jcw
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for(int i=1;;i++) <lU(9)
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{ t$p%UyVE
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); LaZ
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//Utility.log(in.readLine()); DHyQ:0q
sHeader=httpConnection.getHeaderFieldKey(i); T-lP=KF=
if(sHeader!=null) ;9-J=@KY4
{ BZKg:;9
if(sHeader.equals("Content-Length")) jq_4x[
{ jeO`45O
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 0"N4WH O
break; u-bgk(u
} +afkpvj8
} Sj*W|n\gj
else Q,tjODc6n
break; #,FXc~ V
} #Aj#C>
} `K[r5;QFKf
catch(IOException e){e.printStackTrace ();} ^5>W`vwp
catch(Exception e){e.printStackTrace ();} qI
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Utility.log(nFileLength); \{Je!#
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return nFileLength; &|Rww\oJ
} 7fd,I% v
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//保存下载信息(文件指针位置) L$ ^ew0C
private void write_nPos() !c0x^,iE
{ .<YfnW5/K
try{ sYSq >M
output = new DataOutputStream(new FileOutputStream(tmpFile)); gdh|X[d
output.writeInt(nStartPos.length); muBl~6_mb2
for(int i=0;i<nStartPos.length;i++) 9KT85t1#
{ )(1tDQ`L>
// output.writeLong(nPos); n$>_2v
output.writeLong(fileSplitterFetch.nStartPos); vS:=%@c>ta
output.writeLong(fileSplitterFetch.nEndPos); R!\._m?\h
} kFT*So`'
output.close(); Gg:W%
} _g D9oK
catch(IOException e){e.printStackTrace ();} 31M'71s
catch(Exception e){e.printStackTrace ();} $bBUL C
} CG J_k?h
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//读取保存的下载信息(文件指针位置) &Ot9"Aq:
private void read_nPos() x[BA <UNO
{ C nD3%%
try{ V=PK)FJ
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); OU^I/TU
int nCount = input.readInt(); &sXk!!85:
nStartPos = new long[nCount]; D$D;'Kij
nEndPos = new long[nCount]; %RzkP}1>E
for(int i=0;i<nStartPos.length;i++) Lm0q/d2|\X
{ `d
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nStartPos = input.readLong(); qjf4G[]!
nEndPos = input.readLong(); c"Q9ob
} V4W(>g
input.close(); $%ztP
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} D*_.4I
catch(IOException e){e.printStackTrace ();} uMZ<i}
catch(Exception e){e.printStackTrace ();} qA25P<