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**SiteFileFetch.java gle<{
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package NetFox; 3ESrd"W=
import java.io.*; /?1^&a
import java.net.*; [a!)w@I:
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public class SiteFileFetch extends Thread { d/[kky}
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SiteInfoBean siteInfoBean = null; //文件信息Bean z~th{4#E;
long[] nStartPos; //开始位置 cAn_:^
long[] nEndPos; //结束位置 A[`2Mnj
FileSplitterFetch[] fileSplitterFetch; //子线程对象 )~CNh5z6Y
long nFileLength; //文件长度
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boolean bFirst = true; //是否第一次取文件 P
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boolean bStop = false; //停止标志 ]2c0?f*Y7
File tmpFile; //文件下载的临时信息 N<O<wtXIj
DataOutputStream output; //输出到文件的输出流 Khh}flRy
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) F+]cFx,/
public SiteFileFetch(SiteInfoBean bean) throws IOException Ri>ZupQ6
{ Dqc2;>
siteInfoBean = bean; XM)
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 5FE&
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); f#\Nz>tOhE
if(tmpFile.exists ()) 0$_WIk
{ h!7Lvh`o
bFirst = false; NpxgF<G
read_nPos(); s &f\gp1
} Ek60[a
else hOYP~OR
{ NFPWh3),f
nStartPos = new long[bean.getNSplitter()]; ZA \;9M=
nEndPos = new long[bean.getNSplitter()]; !j&#R%D
} "TVmxE%(
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} q7pe\~q
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public void run() Hb[P|pPT
{ T_d)1m fl
//获得文件长度 }/4),W@<
//分割文件 aK8s0G!z?5
//实例FileSplitterFetch J$d']%Dwb
//启动FileSplitterFetch线程 "y60YYn-#J
//等待子线程返回 KV! (
try{ Q\}Ck+d`a
if(bFirst) R+El/ya:6
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nFileLength = getFileSize(); *;F:6p4_
if(nFileLength == -1) Yq'D-$@
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System.err.println("File Length is not known!"); +$F,!rV-s
} S~>R}=
else if(nFileLength == -2) iz 0:
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System.err.println("File is not access!"); $EL:Jx2<
} !;Ke# E_d
else wG73GD38
{ agq4Zy
for(int i=0;i<nStartPos.length;i++) m;0ZV%c*j
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); :sttGXQX
} /6Kx249Dw
for(int i=0;i<nEndPos.length-1;i++) 7.]H9
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nEndPos = nStartPos[i+1]; tO?-@Qf/9<
} HQnc`2
nEndPos[nEndPos.length-1] = nFileLength; G=LK
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} @)wsHW%cjz
} |D_4 iFC
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//启动子线程 #N;&^El
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; h^,av^lg^
for(int i=0;i<nStartPos.length;i++) ZZ
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), h"[:$~/UJ
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ^9><qKbO
nStartPos,nEndPos,i); |7Qe{
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); \Yn0|j>
fileSplitterFetch.start(); 5~d=,;yE
} pK ^$^*#
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Xc4zUEO9
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); <+<Nsza
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", /(?s\}O
nEndPos = " + nFileLength); clk]JA (
// fileSplitterFetch[nPos.length-1].start(); t*)!BZ
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//等待子线程结束 D/=k9[b!
//int count = 0; a}iP +#;
//是否结束while循环 zFQm3 !.
boolean breakWhile = false; Zy.3yQM9i
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while(!bStop) d%RH]j4
{ 9aX!<Z
write_nPos(); #$]8WSl
Utility.sleep(500); +"1-W>HV
breakWhile = true; (g&@E(@]?
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for(int i=0;i<nStartPos.length;i++) C=IN "
{ Ktu~%)k%
if(!fileSplitterFetch.bDownOver) nPDoK!r'
{ -<sW`HpD'
breakWhile = false; .gM6m8l9wp
break; 7u
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} c&Eva
} C XNYWx
if(breakWhile) -wf>N:
break; Z{/GT7 /
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//count++; 5m;BL+>YE
//if(count>4) GDb Vy)&
// siteStop(); g9=_^^Tg
} \}X[0ct2!
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System.err.println("文件下载结束!"); F)Z9Qlo
} u \<APn
catch(Exception e){e.printStackTrace ();} k3KT':*
} "d/uyS$6
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//获得文件长度 '4,IGxIq
public long getFileSize() -s1.v$g
{ x 0#u2j?zj
int nFileLength = -1; )."dqq^ q
try{ ~)zxIO!
URL url = new URL(siteInfoBean.getSSiteURL()); r8!pk~R5]
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); gf>GK/^HH
httpConnection.setRequestProperty("User-Agent","NetFox"); TKiYEh
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int responseCode=httpConnection.getResponseCode(); B@#vS=g
if(responseCode>=400) N1.fV -
{ 0{u%J%;
processErrorCode(responseCode); NjPQT9&3h
return -2; //-2 represent access is error AX
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} G}LV"0?
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String sHeader; b`%!\I
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for(int i=1;;i++) Z9*@w`x^u
{ UJ(UzKq8
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Z[B:6\oQ
//Utility.log(in.readLine()); E|jU8qz>P
sHeader=httpConnection.getHeaderFieldKey(i); 7\ZSXQy1W
if(sHeader!=null) g_A#WQyh\'
{ 7%[ YX
if(sHeader.equals("Content-Length")) e,Y<$kPV
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Y9&na&vY?
break; U0iV
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} jw
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} t;-F]
else X[f)0w%
break; c-!3wvt)
} 2$`Y 4b 3t
} zL3zvOhu}
catch(IOException e){e.printStackTrace ();} `M. I.Z_
catch(Exception e){e.printStackTrace ();} %<'.c9u5
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Utility.log(nFileLength); Xr'b{&
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return nFileLength; HgBu:x?&
} Aa]3jev
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//保存下载信息(文件指针位置) CS5[E-%}T=
private void write_nPos() -WR<tkK
{ 2;J\Z=7
try{ ,V^$Meh
output = new DataOutputStream(new FileOutputStream(tmpFile)); ^".6~{
output.writeInt(nStartPos.length); A zp!;+
for(int i=0;i<nStartPos.length;i++) ULgp]IS
{ {"2CI^!/U.
// output.writeLong(nPos); )[r=(6?n
output.writeLong(fileSplitterFetch.nStartPos); lV$#>2Hh5
output.writeLong(fileSplitterFetch.nEndPos); ckv8QAm
} [tElt4uG
output.close(); ^4Ff8Y
} x8~*+ j
catch(IOException e){e.printStackTrace ();} k g Rys
catch(Exception e){e.printStackTrace ();} OdNcuiLa
} Zm7,O8
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//读取保存的下载信息(文件指针位置) m6]6!_
private void read_nPos() JNJ6HyCU
{ '5~l{3Lw
try{ b`,Sd.2=('
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); '
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int nCount = input.readInt(); t7sEY
nStartPos = new long[nCount]; UI%4d3
nEndPos = new long[nCount]; K{V.N<