/* DB~MYOX~
**SiteFileFetch.java "&Mou
*/ :MBS>owR
package NetFox; >b43%^yii
import java.io.*; n$
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import java.net.*; _uJVuCc
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public class SiteFileFetch extends Thread { 0\wi am-
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SiteInfoBean siteInfoBean = null; //文件信息Bean 0d`5Gy_ D%
long[] nStartPos; //开始位置 M8zE3;5
long[] nEndPos; //结束位置 gD1+]am
FileSplitterFetch[] fileSplitterFetch; //子线程对象 cUs L6y
long nFileLength; //文件长度 8T7f[?
boolean bFirst = true; //是否第一次取文件 Gh=<0WaF=
boolean bStop = false; //停止标志 ?} X}#
File tmpFile; //文件下载的临时信息 kXEtuO5FUM
DataOutputStream output; //输出到文件的输出流 Of#K:`1@
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) z^3Q.4Qc6^
public SiteFileFetch(SiteInfoBean bean) throws IOException &SrGh$:X
{ ~?-qZ<9/
siteInfoBean = bean; ctK65h{Eo
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); )2]a8JVf
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); RF!'K
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if(tmpFile.exists ()) ZYDWv/u
{ ]< +3Vw
bFirst = false; e2bLkb3c
read_nPos(); %ZuLl(
} (Xj.iP
else >|(%2Zl
{ pX^=be_
nStartPos = new long[bean.getNSplitter()]; f)U6p
nEndPos = new long[bean.getNSplitter()]; 5}7ISNP;f
} p;e$kg1
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public void run() Wz5=(<{S
{ -_HRqw,Z0
//获得文件长度 j9>TTgy@
//分割文件 wB2}uk7
//实例FileSplitterFetch =+4 _j
//启动FileSplitterFetch线程 Hh@2 m\HA
//等待子线程返回 "4RQ`.SR
try{ }>,CUz
if(bFirst) @sdS0pC
{ KDBY9`08
nFileLength = getFileSize(); 0:#7M}U
if(nFileLength == -1) S
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{ %!yxC
System.err.println("File Length is not known!"); )\"I*Jwir
} h&P
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else if(nFileLength == -2) q#|r
{ XR<G}x
System.err.println("File is not access!"); Qi"'bWX@
} 4M7^
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else ^9s"FdB]24
{ s6IP;}
for(int i=0;i<nStartPos.length;i++) 4]]b1^vVj
{ 2$3kKY6$e
nStartPos = (long)(i*(nFileLength/nStartPos.length)); .c03}RTC^
} Q~b_dx{m
for(int i=0;i<nEndPos.length-1;i++) l:x_j\
{ rX:1_q`xA
nEndPos = nStartPos[i+1]; t+J)dr
} ~n8F7
nEndPos[nEndPos.length-1] = nFileLength; [m
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} rCkYfTYI
} QY@nE
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//启动子线程 K# /Ch5?
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; {aT92-D3
for(int i=0;i<nStartPos.length;i++) Ae.]F)w_\
{ 0T=jR{j!o
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), unpfA#&!"
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), FGDw;lEa9[
nStartPos,nEndPos,i); pL%4= ]m
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); f7S^yA[[
fileSplitterFetch.start(); c_t7RWV}
} u^!&{ q
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), aam1tm#Q
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); `9:v*KuM#R
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", O-?z' @5cI
nEndPos = " + nFileLength); o%$<LaQG5
// fileSplitterFetch[nPos.length-1].start(); n|J.)E.
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//等待子线程结束 #DrZ`Aq
//int count = 0; p?_'|#tz
//是否结束while循环 .&Y,D-h}7|
boolean breakWhile = false; G[y&`Qc)G
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while(!bStop) #*[,woNk
{ gD,A9a(3
write_nPos(); A>H*`{}
Utility.sleep(500); FfZ{%E
breakWhile = true; u!m,ilAnd
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for(int i=0;i<nStartPos.length;i++) b,=,px
{ AECxd[k$9
if(!fileSplitterFetch.bDownOver) V+P8P7y37B
{ i0i.sizu
breakWhile = false; bCH*8,Bmh
break; p)K9ZI
} ?3.(Vqwog
} 0G+L1a-
if(breakWhile) }G"r3*
break; Sn_z
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//count++; 6GvhEulYR
//if(count>4) !"Z."fm*
// siteStop(); ~e,f )?
} IwZZewb-a
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System.err.println("文件下载结束!"); /zChdjz
} t;Fbt("]:
catch(Exception e){e.printStackTrace ();} COxZ
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} @n5;|`)\
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//获得文件长度 zav*
public long getFileSize() TmRrub
{ 'LtgA|c=
int nFileLength = -1; Ek gZxT_&
try{ Pu/-Qpqh
URL url = new URL(siteInfoBean.getSSiteURL()); (cPeee%Q
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Hsd|ka$x>
httpConnection.setRequestProperty("User-Agent","NetFox"); *l-Dh:
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int responseCode=httpConnection.getResponseCode(); ,f-T1v"
if(responseCode>=400) #QJ4o_
{ H]T2$'U6
processErrorCode(responseCode); w>/pQ6=OFR
return -2; //-2 represent access is error Res"0Q
} e/m'a|%:
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String sHeader; 1FXzAc(c!
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for(int i=1;;i++) `E4!u=%
{ cLN[o8ZU
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); goBKr: &]w
//Utility.log(in.readLine()); 0k]ju
sHeader=httpConnection.getHeaderFieldKey(i); $2 +$,:
if(sHeader!=null) a?xq*|?
{ q~:'R
if(sHeader.equals("Content-Length")) mPw56>
{ 8h@)9Q]d\
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); k:+)$[t7
break; C[87f-g
} 8g2-8pa{
} 5qeS|]^`
else `|ck5DZT5L
break; c}I8!*\
} 3ZJagJ\O
} k_|v)\4B
catch(IOException e){e.printStackTrace ();} %RT6~0z
catch(Exception e){e.printStackTrace ();} J}Z_.:JO(w
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Utility.log(nFileLength); 0F0(]7g^
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return nFileLength;
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} lWyP[>*
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//保存下载信息(文件指针位置)
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private void write_nPos() Cak/#1
{ "<n"A7e
try{ /x8C70W^
output = new DataOutputStream(new FileOutputStream(tmpFile)); b]qfcV
output.writeInt(nStartPos.length); 51;%\@=
for(int i=0;i<nStartPos.length;i++) z1@sEfk>
{ \qd)l
// output.writeLong(nPos); pi l*/&pB
output.writeLong(fileSplitterFetch.nStartPos); 4Z
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output.writeLong(fileSplitterFetch.nEndPos); '14l )1g.
} j C1^>D
output.close(); 4kY{X%9
} e#eO`bT
catch(IOException e){e.printStackTrace ();} ^N}~U5
catch(Exception e){e.printStackTrace ();} <+1w'-
} q$2taG}
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//读取保存的下载信息(文件指针位置) bHH}x"d[x
private void read_nPos() !.GY~f<d$
{ Y;5^w=V
try{ YU \t+/b
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 2Lu{@*
int nCount = input.readInt(); ve]95w9J
nStartPos = new long[nCount]; xfV2/A#h
nEndPos = new long[nCount]; 1sJJ"dC.w
for(int i=0;i<nStartPos.length;i++) {Ll8@'5
{ o!dkS/u-m
nStartPos = input.readLong(); DmpJzHj|
nEndPos = input.readLong(); g$+O<a@ n
} V@xnz)^t
input.close(); xupdjT%4
} eDZ3SIZ
catch(IOException e){e.printStackTrace ();} gR6T]v
catch(Exception e){e.printStackTrace ();} l|QFNW[i
} &CsBG?@Z|
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private void processErrorCode(int nErrorCode) fOfz^W
{ u=i^F|
System.err.println("Error Code : " + nErrorCode); lxJ.h&