/* f"-?%I*'
**SiteFileFetch.java "#OmmU<U
*/ |?0C9
package NetFox; g,1\Gj%y
import java.io.*; Gh< r_O~L3
import java.net.*; |_A35"v
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public class SiteFileFetch extends Thread { xo*a9H?@
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SiteInfoBean siteInfoBean = null; //文件信息Bean /f2*J
long[] nStartPos; //开始位置 1,/oS&?E
long[] nEndPos; //结束位置 4iw+3 Q|
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ycH=L8
long nFileLength; //文件长度 i\3`?d
boolean bFirst = true; //是否第一次取文件 lKa}Bcd
boolean bStop = false; //停止标志 >97V2W
File tmpFile; //文件下载的临时信息 `fL$t0"
DataOutputStream output; //输出到文件的输出流 dtnAMa5$T
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 7y60-6r
public SiteFileFetch(SiteInfoBean bean) throws IOException t#d~gBe?V
{ 6 g!t1%Kb
siteInfoBean = bean; m*(8I=]q
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 9\dC8
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); -Z#A}h
if(tmpFile.exists ()) }6o` in>M
{ Bp b_y;E
bFirst = false; jbG #__#_
read_nPos(); FkRrW^?5G
} m7d? SU
else t<Og?m}(
{ ,H|V\\
nStartPos = new long[bean.getNSplitter()]; ('>!dXA$
nEndPos = new long[bean.getNSplitter()]; <8'}H`w%
} y0z}[hZ
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} **oN/5
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public void run() V a<L[8
{ k/*r2 C
//获得文件长度 4Sw)IU~K(
//分割文件 L-q.Q
//实例FileSplitterFetch &t`l,]PQ=6
//启动FileSplitterFetch线程 Id9hC<8$dq
//等待子线程返回 `Up3p24
try{ ':J[KWuV
if(bFirst) -MeGJX:^I
{ yV_aza
nFileLength = getFileSize(); n)[{nkS6[
if(nFileLength == -1) \]GBd~i<
{ meE&, {
System.err.println("File Length is not known!"); Kc0KCBd8];
} YQ;?N66
else if(nFileLength == -2) l&[ x)W
{ 7mt;qn?n
System.err.println("File is not access!"); s)\%%CM
} =M>pL+#
else }c$Zlb
{ }5u$/c@f1
for(int i=0;i<nStartPos.length;i++) %r?Y!=0
{ +AO(e
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ]~GwZB'M
} 3+0$=ef
for(int i=0;i<nEndPos.length-1;i++) r 1n l!
{ R8sj>.I9j
nEndPos = nStartPos[i+1]; &KmVtj
} COZ<^*=A#p
nEndPos[nEndPos.length-1] = nFileLength; (~#{{Ja
} I^emH+!MW
} ,eW K~ pa
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//启动子线程 jEo)#j];`<
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; TY"8.vd
for(int i=0;i<nStartPos.length;i++) i]Njn k
{ C|*U)#3:F
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ~+
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),
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nStartPos,nEndPos,i); &s-iie$"@x
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Cjc>0)f&.
fileSplitterFetch.start(); bbCH(fYbu
} #rD0`[pz
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 3"FvYv{
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); hSr2<?yk
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Jz<-B
nEndPos = " + nFileLength); `tw[{Wb
// fileSplitterFetch[nPos.length-1].start(); U[,."w]T
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//等待子线程结束 W|'7)ph
//int count = 0; Y7vUdCj
//是否结束while循环 b~>kTO
boolean breakWhile = false; `ECY:3"$KA
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while(!bStop) /<C}v~r
{ Y&wtF8
write_nPos(); !>RDHu2n
Utility.sleep(500); EdcbWf7
breakWhile = true; KTtB!4by
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for(int i=0;i<nStartPos.length;i++) ` `mnk>/
{ (w[#h9j
if(!fileSplitterFetch.bDownOver) &X3G;x2;
{ w}|XSJ!
breakWhile = false; A#7/,1h\
break; _nwsIjsW
} L!;"73,&(8
} *Ri\7CqU"6
if(breakWhile) {'#1do}{
break; 'Dn\.x^]1
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//count++; *qa.hqas
//if(count>4) kI?+\k\V`
// siteStop(); [x%[N)U3
} 6;:z?Q
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System.err.println("文件下载结束!"); o%yfR.M6$
} 3#A4A0
catch(Exception e){e.printStackTrace ();} g?.y7!m
} _^/k
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//获得文件长度 ='vD4}"j
public long getFileSize() _jb'HP
{ y'5`Uo?\",
int nFileLength = -1; ty8>(N(~
try{ efr 9
URL url = new URL(siteInfoBean.getSSiteURL()); PZ>(cvX&
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); v!`:{)2C
httpConnection.setRequestProperty("User-Agent","NetFox"); l|81_B C"
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int responseCode=httpConnection.getResponseCode(); f\;w(_
if(responseCode>=400) i/.#`
{ v,'k2H
processErrorCode(responseCode); g#k@R'7E
return -2; //-2 represent access is error 8NkyT_\
} u`CHM:<<?
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String sHeader; Z9G4in8
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for(int i=1;;i++) GbC@ |
{ h`dHk]O
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); /X]gm\x7s
//Utility.log(in.readLine()); hg%iv%1B'
sHeader=httpConnection.getHeaderFieldKey(i); -{}(U
if(sHeader!=null) 9Af nMD
{ fH@cC`
if(sHeader.equals("Content-Length")) 4.Q[Tu
{ ,.kmUd
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); +DG-MM%\
break; 1M.#7;#B3
} Sp6==(:.
} [+d~He
else x<`^4|<
break; 2 OV$M~
} :t9sAD
} o|u4C {j
catch(IOException e){e.printStackTrace ();} .sc80i4
catch(Exception e){e.printStackTrace ();} kh@O_Q`j
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Utility.log(nFileLength); nrA 4N1
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return nFileLength; 5t-d+vB
} ,{\Ae"{6
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//保存下载信息(文件指针位置) M)ao}m>
private void write_nPos() ;jaugKf
{ "uP*pR^
try{ HY eCq9S
output = new DataOutputStream(new FileOutputStream(tmpFile)); *P5\T4!+d
output.writeInt(nStartPos.length); J5{
for(int i=0;i<nStartPos.length;i++) .%dGSDru
{ S,C c0)j>
// output.writeLong(nPos); ;w+
output.writeLong(fileSplitterFetch.nStartPos); FZ}^)u}o
output.writeLong(fileSplitterFetch.nEndPos); 4DDBf j
} <7>1Z
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output.close(); z R'EQ
} YM#MfL#
catch(IOException e){e.printStackTrace ();} tBfmjxv
catch(Exception e){e.printStackTrace ();} z .\r7
} 7QnWw0
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//读取保存的下载信息(文件指针位置) (]\p'%A)
private void read_nPos() $T#fCx/
{ TBrwir
try{ j24DL+
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); !'rdHSy
int nCount = input.readInt(); xo?'L&%
nStartPos = new long[nCount]; !;mn]wR>a
nEndPos = new long[nCount]; KAD2_@l
for(int i=0;i<nStartPos.length;i++) -
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{ ;-JF b$m
nStartPos = input.readLong(); J=78p#XUg
nEndPos = input.readLong(); ?H,f|nc
} tY]?2u%)
input.close(); ~]RfOpq^w
} N?-ZvE\C
catch(IOException e){e.printStackTrace ();} i ]8bj5j{
catch(Exception e){e.printStackTrace ();} AZ4?N.X?
} 1\UU"
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private void processErrorCode(int nErrorCode) ZzgzeT+bv
{ Cw(yp u
System.err.println("Error Code : " + nErrorCode); qD\9h`a
} a%U#PF6
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//停止文件下载 1U.X[}e
public void siteStop() =bja\r{
{ J
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bStop = true; k7rg:P
for(int i=0;i<nStartPos.length;i++) lEwQj[ k
fileSplitterFetch.splitterStop(); E9I08AODS
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} XD8I.q
} csLbzDg
//负责部分文件的抓取 wG7>2*(
**FileSplitterFetch.java RD)Vb$.B:
*/ e21J9e6z
package NetFox; y;fF|t<y
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import java.io.*; :ChXzZ
import java.net.*; \W TKw x
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public class FileSplitterFetch extends Thread { kO*\JaD
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String sURL; //File URL bcy
long nStartPos; //File Snippet Start Position 6pS}\aD
long nEndPos; //File Snippet End Position Q<D_QJ
int nThreadID; //Thread's ID v@GhwL
boolean bDownOver = false; //Downing is over )h 6 w@TF
boolean bStop = false; //Stop identical L)\<7
FileAccessI fileAccessI = null; //File Access interface !idVF!xG
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 65O 8?I
{ vdgK3I
this.sURL = sURL; xFThs,w
this.nStartPos = nStart; 8N"WKBj|_d
this.nEndPos = nEnd; UcB&