/* |*E"G5WZM
**SiteFileFetch.java ;dOs0/UM&
*/ JCcQd01z
package NetFox;
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import java.io.*; r{Z[xWIX
import java.net.*; Q"'V9m7
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public class SiteFileFetch extends Thread { I+~bCcgPi
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SiteInfoBean siteInfoBean = null; //文件信息Bean 1MV@5j
long[] nStartPos; //开始位置 !;+U_j'Pg
long[] nEndPos; //结束位置 (H1lqlVWV#
FileSplitterFetch[] fileSplitterFetch; //子线程对象 sX5sL
long nFileLength; //文件长度 IXJ6PpQLv
boolean bFirst = true; //是否第一次取文件 Aqu]9M~
boolean bStop = false; //停止标志 R+F,H`
File tmpFile; //文件下载的临时信息 >-zkB)5<,#
DataOutputStream output; //输出到文件的输出流 M5 `m.n<
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) x ;mJvfX
public SiteFileFetch(SiteInfoBean bean) throws IOException 4oN${7k0
{ v~`*(Hh
siteInfoBean = bean; s ^3[W0hL
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); oXbI5XY)wb
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); (Com,
if(tmpFile.exists ()) 1 KB7yG-#6
{ Z8fJ{uOIL
bFirst = false; OM{Dq|
read_nPos(); z^3Q.4Qc6^
} CpSK(2j
else Efvq?cG&
{ ~?-qZ<9/
nStartPos = new long[bean.getNSplitter()]; ]hKgA~;
nEndPos = new long[bean.getNSplitter()]; ]4GZ'&m}
} C d|W#.6
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} `I{ tZ$iD
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public void run() 8H_l[/
{ &D)2KD"N
//获得文件长度 dr{1CP
//分割文件 J[6VBM.Y
//实例FileSplitterFetch Ju4.@
//启动FileSplitterFetch线程 Q ]0r:i=
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//等待子线程返回 O a1'oYIHg
try{ )^";BVY
if(bFirst) (M8hy4Ex
{ W\NG>t
nFileLength = getFileSize(); 7$#rNYa,z
if(nFileLength == -1) ke^d8Z.
{ %i3{TL
System.err.println("File Length is not known!"); h(|;\ ~
} wB2}uk7
else if(nFileLength == -2) =+4 _j
{ w#<p^CS
System.err.println("File is not access!"); egWx9xX
} UFIjW[h
else :~i+tD
{ ]'e AO
for(int i=0;i<nStartPos.length;i++) KD=bkZ&
{ sNf
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); N|$5/bV
} 9 R
for(int i=0;i<nEndPos.length-1;i++) EP(Eq
{ CdNih8uG
nEndPos = nStartPos[i+1]; Pr2;Kp
} I5Q~T5Ar
nEndPos[nEndPos.length-1] = nFileLength; 5v+L';wx[T
} 1xIFvXru
} <uC<GDO
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//启动子线程 VW~Xbyf
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; VRB~7\A5<)
for(int i=0;i<nStartPos.length;i++) {Y^c*Iqn
{ ozuIwzi7N
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), fQ1 0O(`g,
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), j<@fT
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nStartPos,nEndPos,i); W.p66IQwL&
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); T1bFxim#b
fileSplitterFetch.start(); pW7kj&a_.
} );!dg\U
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), `^zQ$au'u
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); FTbtAlqh<
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", }|,EU!nDi
nEndPos = " + nFileLength); rXuAixu!t
// fileSplitterFetch[nPos.length-1].start(); {<r`5
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//等待子线程结束 ij!*CTG
//int count = 0; 7G2vYKC'
//是否结束while循环 I X?@~'
boolean breakWhile = false; egbb1+tY
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while(!bStop) 'cYQ?;
{ C?S~L5a#oC
write_nPos(); u,\xok"
Utility.sleep(500); _Po#ZGm~
breakWhile = true; xp(mB7;:
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for(int i=0;i<nStartPos.length;i++) [C2kK *JZ
{ I IYL A(
if(!fileSplitterFetch.bDownOver) AsD1-$
{ $=lJG(2%
breakWhile = false; UFos
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break;
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} @
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} 0T=jR{j!o
if(breakWhile) K/~Y!?:Jr
break; C_C$5[~-:
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//count++; b~F!.^7Q
//if(count>4) 1BTgGF
// siteStop(); ~yd%~|
} W;91H'`?H
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System.err.println("文件下载结束!"); 7f[8ED[4
} z(#=tC|
catch(Exception e){e.printStackTrace ();} aam1tm#Q
} JTjzT2`A.
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//获得文件长度 T4l-sJ'|
public long getFileSize() k -io$
{ $,g 3*A
int nFileLength = -1; n|J.)E.
try{ .\)--+(
URL url = new URL(siteInfoBean.getSSiteURL()); Dxz5NW4
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Gi;9 S
httpConnection.setRequestProperty("User-Agent","NetFox"); eK\|SQb
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int responseCode=httpConnection.getResponseCode(); .HQVj 'g
if(responseCode>=400) on6<l
{ .0?ss0~
processErrorCode(responseCode); xu`d`!Tx
return -2; //-2 represent access is error Vvx a.B
} 3LT+9ad2d
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String sHeader; _T_PX$B
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for(int i=1;;i++) .QNjeMu.
{ 6vMDm0sv
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Z3Bo@`&?
//Utility.log(in.readLine()); S.qk%NTTD
sHeader=httpConnection.getHeaderFieldKey(i); t*eleNYeS~
if(sHeader!=null) U.d'a~pH
{ nl.~^CP
if(sHeader.equals("Content-Length")) S$Ns8=
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); X+/{%P!w
break; 2Zv,K- G
} Mr#oT?
} nLzX
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else V+P8P7y37B
break; /QV [N
} u Eu6f
} n$nne6|O
catch(IOException e){e.printStackTrace ();} cC7"J\+r*
catch(Exception e){e.printStackTrace ();} #rqyy0k0'h
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Utility.log(nFileLength); ^A:!ni@3
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return nFileLength; 2nG{>,#C:O
} 41P4?"O
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//保存下载信息(文件指针位置) Y8x(#qp,
private void write_nPos() $71i+h]_
{ a*pXrp@
try{ -='8_B/75
output = new DataOutputStream(new FileOutputStream(tmpFile)); g}\U, (
output.writeInt(nStartPos.length); ?6_"nT*}
for(int i=0;i<nStartPos.length;i++) Ah(\%35&
{ /zChdjz
// output.writeLong(nPos); t;Fbt("]:
output.writeLong(fileSplitterFetch.nStartPos); COxZ
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output.writeLong(fileSplitterFetch.nEndPos); N]3-L`t
} +!mNm?H[!
output.close(); 'vqj5YTj
} i{%z
catch(IOException e){e.printStackTrace ();} ?,A}E|jZ
catch(Exception e){e.printStackTrace ();} I{i:B
} D5o+0R
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//读取保存的下载信息(文件指针位置) <k!mdj)
private void read_nPos() 8=ukS_?Vy
{ c,g]0S?gu
try{ ,3fuX~g
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); UKt/0Ze
int nCount = input.readInt(); ?qq!%4mTB
nStartPos = new long[nCount]; gxBl1
nEndPos = new long[nCount]; [Gh%nsH
for(int i=0;i<nStartPos.length;i++) B^Rw?:hN
{ ="'rH.n #
nStartPos = input.readLong(); $9j>VGf=
nEndPos = input.readLong(); QZ:]8MHl]
} i'eYmm96Q
input.close(); . }-@;:yh
} ovo? lE-a0
catch(IOException e){e.printStackTrace ();} H4,.H,PZ
catch(Exception e){e.printStackTrace ();} m!FM+kge
} iXr`0V
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private void processErrorCode(int nErrorCode) Z
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{ 5JXzfc9rL
System.err.println("Error Code : " + nErrorCode); u"Hd55"&
} <