/* Zw(*q?9\
**SiteFileFetch.java e6s-;
*/ x7$U
package NetFox; $-""=O|"
import java.io.*; .S/W_R
import java.net.*; dP0!?J Y
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public class SiteFileFetch extends Thread { >W2Z]V
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SiteInfoBean siteInfoBean = null; //文件信息Bean 9TGjcZ1S'
long[] nStartPos; //开始位置 Qxj &IX
long[] nEndPos; //结束位置 ,sPsL9]$
FileSplitterFetch[] fileSplitterFetch; //子线程对象 rtcY(5Q
long nFileLength; //文件长度 *au&ODa
boolean bFirst = true; //是否第一次取文件 =8OPjcX.V
boolean bStop = false; //停止标志 7NG^X"N{Ul
File tmpFile; //文件下载的临时信息 )mO|1IDTN
DataOutputStream output; //输出到文件的输出流 b{H&%Jx)
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) =!3G ,qV
public SiteFileFetch(SiteInfoBean bean) throws IOException GCul6,w
{ Q7]:vs)%
siteInfoBean = bean; $?p^
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//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); N>;"r]Rl"
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); $x;wnXXXM
if(tmpFile.exists ()) btb-MSkO
{ C`OdMM>D
bFirst = false; TL@_m^SM
read_nPos(); GIQ/gM?Pv
} ji{V#
else d|Wpub
{ cw#p!mOi~
nStartPos = new long[bean.getNSplitter()]; Mj5=t:MI
nEndPos = new long[bean.getNSplitter()]; N(mhgC<O
} 2#'{Q4K
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} vvw6 GB,M
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public void run() 1vQf=t%lw
{ !$hrK6o
//获得文件长度 y|V/xm+Fp
//分割文件 ]od]S8$5
//实例FileSplitterFetch S:{hgi,T*
//启动FileSplitterFetch线程 ch,<4E/c[R
//等待子线程返回 +g ovnx
try{ 7~TE=t
if(bFirst) ~d_Z?Z
{ n5"rSgUtE
nFileLength = getFileSize(); JE,R[` &
if(nFileLength == -1) =3lUr<Ze
{ 7}(LO^,A
System.err.println("File Length is not known!"); 6grJoim|
} x,
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else if(nFileLength == -2) x- ) D@dw<
{ 0iqa]Am
System.err.println("File is not access!"); yd5r]6ej
} ftF?T.dx
else /ow/)\/}
{ .z7XYmv
for(int i=0;i<nStartPos.length;i++) !cT#G
{ N8}R<3/
nStartPos = (long)(i*(nFileLength/nStartPos.length)); K,%H*1YKK
} j#y_#
for(int i=0;i<nEndPos.length-1;i++) $bh2zKB)
{ gE(QVbh(
nEndPos = nStartPos[i+1]; O:Bfbna
} [ivz/r(Rj
nEndPos[nEndPos.length-1] = nFileLength; ja70w:ja
} g"(
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} 3G8BYP
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//启动子线程 l/[@1(F
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; =| S8.|r+
for(int i=0;i<nStartPos.length;i++) xZPSoxu
{ _ZIaEJjH/
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), a kgXI^K
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), (qlIQC
nStartPos,nEndPos,i); ~-lIOQ.v
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); zC!]bWsD
fileSplitterFetch.start(); Pk[f_%0
} $1.iMHb
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), lF5;Kc
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); &1893#V
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", W"AWhi{h
nEndPos = " + nFileLength); n99:2r_
// fileSplitterFetch[nPos.length-1].start(); 's@v'u3
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//等待子线程结束 9fMg?
//int count = 0; jpZX5_o
//是否结束while循环 9z\q_0&i
boolean breakWhile = false; !Qjpj KRy
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while(!bStop) M:6H%6eT
{ "w=p@/C
write_nPos(); DUEA"m h
Utility.sleep(500); U# Y?'3 :
breakWhile = true; ?*K;+@EH
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for(int i=0;i<nStartPos.length;i++) wJ1qJ!s@
{ lg&"=VXx51
if(!fileSplitterFetch.bDownOver) %;^[WT`,
{ Thn-8DT
breakWhile = false; LPb43
break; k7>* fQ89@
} f|WNPFQ$x
} m/=,O_
if(breakWhile) x`{ni6}
break; hz<kR@k}
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//count++; RZjTUMAz4
//if(count>4) :m_0WT
// siteStop(); %<O'\&!,
} {3yzC
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System.err.println("文件下载结束!"); ^USj9HTK
} Ko\m8\3?fK
catch(Exception e){e.printStackTrace ();} {Mp>+e@xx
} Ag }hyIl
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//获得文件长度 LDBxw
public long getFileSize() xVuGeanCv
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int nFileLength = -1; ppR~e*rv-
try{ S-gL]r3G8
URL url = new URL(siteInfoBean.getSSiteURL()); fxI>FhU_
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); h#^IT
httpConnection.setRequestProperty("User-Agent","NetFox"); Dgj`_yd
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int responseCode=httpConnection.getResponseCode(); zc'!a"
if(responseCode>=400) 4FQU$f
{ NAZxM9
processErrorCode(responseCode); _T6WA&;8
return -2; //-2 represent access is error 7Nh6 `
} [ k^6#TQcn
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String sHeader; A{: a kK
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for(int i=1;;i++) ;s3"j~5m)
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ~YlbS-
//Utility.log(in.readLine()); UB|Nx(V s
sHeader=httpConnection.getHeaderFieldKey(i); y,DK@X
if(sHeader!=null) @+syD
{ j()_
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if(sHeader.equals("Content-Length")) M< *5Y43
{ >9esZA^';
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 1zGEf&rv:
break; (toGU
} |C=^:@}ri?
} C&NoEtL>s
else 59$mfW
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break; 7_E+y$i=
} 6^mO<nB
} HMgZ&v
catch(IOException e){e.printStackTrace ();} Q6MDhv,
catch(Exception e){e.printStackTrace ();} _R8)%<E
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Utility.log(nFileLength); QP7EP aW
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return nFileLength; H }uT'
} >pv~$
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//保存下载信息(文件指针位置) `;hsOfo
private void write_nPos() oE"!
{ n1y#gC
try{ r7C
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output = new DataOutputStream(new FileOutputStream(tmpFile)); yHCQY4/
output.writeInt(nStartPos.length); Fu )V2[TY
for(int i=0;i<nStartPos.length;i++) Z A1?'
{
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// output.writeLong(nPos); +m:U9K(\h
output.writeLong(fileSplitterFetch.nStartPos); !b rN)b)f
output.writeLong(fileSplitterFetch.nEndPos); =XQ3sk6U
} n6O1\}YB
output.close(); UG
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} 9D(M>'Bh
catch(IOException e){e.printStackTrace ();} L;,Nh
catch(Exception e){e.printStackTrace ();} ^-~.L: }q
} q_OIzZ@
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//读取保存的下载信息(文件指针位置) qnrf%rS
private void read_nPos() +z>*m`}F
{ 5}*aP
try{ 9C|T/+R
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 9 ?MOeOV8
int nCount = input.readInt(); u<!!%C~+=
nStartPos = new long[nCount]; <C+:hsS=
nEndPos = new long[nCount]; {8@?9Z9R{
for(int i=0;i<nStartPos.length;i++) .Z8 x!!Q*
{ udp&