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**SiteFileFetch.java q<|AZ2Ai
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package NetFox; mq.`X:e
import java.io.*; FVKTbvYn
import java.net.*; dZ@63a>>@
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public class SiteFileFetch extends Thread { Zu[su>\
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SiteInfoBean siteInfoBean = null; //文件信息Bean wn%A4-%{
long[] nStartPos; //开始位置 C&%_a~
long[] nEndPos; //结束位置 "KpGlY?^
FileSplitterFetch[] fileSplitterFetch; //子线程对象 H7n>Vx:L-
long nFileLength; //文件长度 J*M>6Q.)
boolean bFirst = true; //是否第一次取文件 %tGO?JMkd
boolean bStop = false; //停止标志 Bwxd&;E
File tmpFile; //文件下载的临时信息 kTgEd]^&D
DataOutputStream output; //输出到文件的输出流 gwMNYMI
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ZY+qA
public SiteFileFetch(SiteInfoBean bean) throws IOException ;A*]l'[-
{ oMa6(3T?E
siteInfoBean = bean; I\ob7X'Xu!
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); lymCH
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); CD~.z7,LC
if(tmpFile.exists ()) >kVz49j
{ L="}ErmK
bFirst = false; >y3=|
read_nPos(); )Aqtew+A&
} h2R::/2.
else 7{*>agQh
{ gM:".Ee
nStartPos = new long[bean.getNSplitter()]; q 2E_A
nEndPos = new long[bean.getNSplitter()]; f
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} ;e *!S}C,
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} Q![@c
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public void run() f-Z/tfC
{ S,he6zS
//获得文件长度 t{{QE:/
//分割文件 b\2
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//实例FileSplitterFetch %'pgGC"|
//启动FileSplitterFetch线程 [4f{w%~^
//等待子线程返回 j\M?~=*w
try{ @o`AmC.
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if(bFirst) L!xi
{ Gd85kY@w7
nFileLength = getFileSize(); iXjM.G
if(nFileLength == -1) ?Ir:g=RP*
{ #ABZ&Z
System.err.println("File Length is not known!"); tR$NRMZ.
} i/Zd8+.n$
else if(nFileLength == -2) -iZ`Y?
{ 3Y$GsN4ln
System.err.println("File is not access!"); #H~64/
} ~t~|"u"P
else 0g8NHkM:2a
{ K-Ef%a2#`
for(int i=0;i<nStartPos.length;i++) gB33?
{ ;$g?T~v7
nStartPos = (long)(i*(nFileLength/nStartPos.length)); X&H"51
} 5{,<j\#L
for(int i=0;i<nEndPos.length-1;i++) W"{N Bi
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nEndPos = nStartPos[i+1]; !4+<<(B=E
} ox.F%)eQ
nEndPos[nEndPos.length-1] = nFileLength; p!%pP}I
} OjA,]Gv6
} |[8Th4*n
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//启动子线程 z
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Q"#J6@
for(int i=0;i<nStartPos.length;i++) }jPSUdo
{ X:{!n({r=
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), @H8EWTZ
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), seJ^s@H5l
nStartPos,nEndPos,i); {'H(g[k
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); \ Cj7k^
fileSplitterFetch.start(); f|gg
} Y'X%Aw;`
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), HGg@ _9tW
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); )4 ;`^]F
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", BiBOr}ZQ
nEndPos = " + nFileLength); 9Mcae31
// fileSplitterFetch[nPos.length-1].start(); _yR^*}xJb
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//等待子线程结束 Tlr v={
//int count = 0; Xch~
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//是否结束while循环 .=;
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boolean breakWhile = false; `Pnoxm'
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while(!bStop) @C aG9]
{ G3v5KmT
write_nPos(); %;!.n{X
Utility.sleep(500); _)-o1`*-
breakWhile = true; X}0cCdW
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for(int i=0;i<nStartPos.length;i++) 8q7b_Pq1U
{ 3G4-^hY<
if(!fileSplitterFetch.bDownOver) c:.eGH_f
{ &%Tj/ Qx
breakWhile = false; `M6)f?|$.
break; cB&:z)i4
} oP.7/*p
} RD&PDXT4
if(breakWhile) Z3!`J&
break; -s/ea~=R
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//count++; ^<AwG=
//if(count>4) Xn
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// siteStop(); A+{VGP^
} jc9y<{~x/
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System.err.println("文件下载结束!"); bZV/l4TU
} %8x#rohP
catch(Exception e){e.printStackTrace ();} *{{89E>wC
} U/BR*Zn]*
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//获得文件长度 Y <qm{e
public long getFileSize() 9_s`{(0?
{ ?bu>r=oIO]
int nFileLength = -1; nQS|Lt_+
try{ L/^I*p,
URL url = new URL(siteInfoBean.getSSiteURL()); HpnWoDM
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); >o,TZc\
httpConnection.setRequestProperty("User-Agent","NetFox"); "zy7C*)>r
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int responseCode=httpConnection.getResponseCode(); Y
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if(responseCode>=400) BsJC0I(
{ n'w.;
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processErrorCode(responseCode); PFK
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return -2; //-2 represent access is error WuW^GC{7
} g=o4Q<
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String sHeader; RpYERAgT
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for(int i=1;;i++) pD]OT-8
{ ~u+9J}
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 5/z/>D;
//Utility.log(in.readLine()); =nHgDrA_
sHeader=httpConnection.getHeaderFieldKey(i); gPc=2
if(sHeader!=null) t&DEb_"De
{ jF*j0PkNdb
if(sHeader.equals("Content-Length")) 29q _BR *:
{ ~F7gP{r
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); iG?[<1~
break; dC4'{n|7
} 4xJQ!>6
} >yh2Lri
else Y[S1$(K&*
break; >@AB<$A
} RCLeA=/N@0
} ~^b/(
catch(IOException e){e.printStackTrace ();} u>/ TE
catch(Exception e){e.printStackTrace ();} 61
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Utility.log(nFileLength); xAP+FWyV
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return nFileLength; h `.& f
} y18Y:)DkL
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//保存下载信息(文件指针位置) *HB-QIl
private void write_nPos() #LN`X8Wz'
{ 3DG_QVg^v
try{ s(roJbJ_;
output = new DataOutputStream(new FileOutputStream(tmpFile)); S`?!G&[!>
output.writeInt(nStartPos.length); 9Lfv^V0
for(int i=0;i<nStartPos.length;i++) 8e"gW >f
{ /vb`H>P
// output.writeLong(nPos); -s'-eQF J
output.writeLong(fileSplitterFetch.nStartPos); ?P c' C
output.writeLong(fileSplitterFetch.nEndPos); pFz`}?c0
} !$>R j
output.close(); e<q?e}>?
} eKqk= (
catch(IOException e){e.printStackTrace ();} q6X1P"%.
catch(Exception e){e.printStackTrace ();} eQvg7aO;
} 5 + MS^H
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//读取保存的下载信息(文件指针位置) h3@v+Z<}
private void read_nPos() HiJE}V;Vq
{ P}`H ~N~
try{ B^jc3 VsR
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); fa2kG&, _
int nCount = input.readInt(); S`m]f5u|
nStartPos = new long[nCount]; BJo*'US-Q
nEndPos = new long[nCount]; mU9kVx1+
for(int i=0;i<nStartPos.length;i++)
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nStartPos = input.readLong(); G;XxBA
nEndPos = input.readLong(); _2 osV[e
} 5d!-G$@
input.close(); yJe>JK~)
} ZWp(GC1NA
catch(IOException e){e.printStackTrace ();} qA5r
catch(Exception e){e.printStackTrace ();} t.\dpBq
} i<g-+ Qs
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private void processErrorCode(int nErrorCode) }f7j8py
{ |)/aGZ+
System.err.println("Error Code : " + nErrorCode); z,%$+)K
} 2SR: FUV/
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//停止文件下载 d9|<@A
public void siteStop() 3|Xyl`i4o
{ tcog'nAz
bStop = true; }?v )N).kW
for(int i=0;i<nStartPos.length;i++) )IZ~G\Ra'
fileSplitterFetch.splitterStop(); hqkz^!rp
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} >t_6B~x9
} ?=fyc1
//负责部分文件的抓取 F`]2O:[
**FileSplitterFetch.java WQO) =n
*/ G9<X_
package NetFox; /fV;^=:8c
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import java.io.*; )p%E%6p
import java.net.*; w$-6-rE]d
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public class FileSplitterFetch extends Thread { 6<(.4a?
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String sURL; //File URL 'K,:j 388
long nStartPos; //File Snippet Start Position %sQ^.` 2
long nEndPos; //File Snippet End Position 3=]sLn0L
int nThreadID; //Thread's ID "@,}p\
boolean bDownOver = false; //Downing is over ZO c)
boolean bStop = false; //Stop identical o J;$sj
FileAccessI fileAccessI = null; //File Access interface rguC p}r
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException yY&I