/* 3di;lzGq
**SiteFileFetch.java *jWh4F,
*/ f$kbb6juL
package NetFox; G'#u!<(^h
import java.io.*; fRLA;1va
import java.net.*; =xRD
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public class SiteFileFetch extends Thread { f^lcw
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SiteInfoBean siteInfoBean = null; //文件信息Bean *AW v
long[] nStartPos; //开始位置 wv."
long[] nEndPos; //结束位置 ^uN[rHZ*u
FileSplitterFetch[] fileSplitterFetch; //子线程对象 a{Y|`*7y
long nFileLength; //文件长度 3en67l
boolean bFirst = true; //是否第一次取文件 ~mXzQbe
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boolean bStop = false; //停止标志 d~%7A5
File tmpFile; //文件下载的临时信息 y*{zX=]l<
DataOutputStream output; //输出到文件的输出流 gN:F5 0
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) M'<% d[
public SiteFileFetch(SiteInfoBean bean) throws IOException zEtsMU
{ :??W3ROn
siteInfoBean = bean; b~:)d>s8wY
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); -d#08\
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); [r8[lkR
if(tmpFile.exists ()) {.AN4
{ d94k
bFirst = false; D:bmq93PC
read_nPos(); gDLS)4^w
} EJTM
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else O!f37n-TB
{ 4c 8{AZ
nStartPos = new long[bean.getNSplitter()]; %sOY:>
nEndPos = new long[bean.getNSplitter()]; RH<2f5-sC!
} M.}J SDt
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} Kmaz"6A
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public void run() [1kQ-Ko`
{ ;5[OS8
//获得文件长度 F%o!+%&7
//分割文件 4jTO:aPh_
//实例FileSplitterFetch y-nv#Ejr
//启动FileSplitterFetch线程 SF+L-R<e
//等待子线程返回 nCWoco.xy
try{ gFHBIN;u
if(bFirst) J QnaXjW2
{ O{~Xp!QQt
nFileLength = getFileSize(); G>0d^bx;E
if(nFileLength == -1) \|QB;7u
{
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System.err.println("File Length is not known!"); v9Ii8{ca|
} pMHl<HH
else if(nFileLength == -2) \zg R]|
{ eg}g}a
System.err.println("File is not access!"); Z+y'w#MZL
} ~&T U
else iD|~$<9o
{ '%ilF1#
for(int i=0;i<nStartPos.length;i++) bS~Y_]B
{ b:hta\%/2
nStartPos = (long)(i*(nFileLength/nStartPos.length)); [niFJIsc
} R3_OCM_*
for(int i=0;i<nEndPos.length-1;i++) [.xY>\e
{ qm><}N7f
nEndPos = nStartPos[i+1]; Lg!E
} 3\j`g
nEndPos[nEndPos.length-1] = nFileLength; :FS5BT$=
} ?<3 d
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} 9AhA"+?
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//启动子线程 i@?|vu
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; n5UUoBv
for(int i=0;i<nStartPos.length;i++) /fb}]e]N
{ iTAj${ >
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), z/4<x?}+hE
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Uvm.|p_V
nStartPos,nEndPos,i); I@Hx
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); iu8Q &Us0P
fileSplitterFetch.start(); 96~y\X@x
} LJPJENtFIs
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), T})q/oUqK
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); J~WT;s
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", +%\Ci!%b
nEndPos = " + nFileLength); CqC
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// fileSplitterFetch[nPos.length-1].start(); L%Zr3Ct
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//等待子线程结束 X/:V{2
//int count = 0; ;.sYE/ZVi
//是否结束while循环 ^_@[1'^
boolean breakWhile = false; ~8nR3ki
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while(!bStop) TxF^zx\
{ "i#g [x
write_nPos(); j3-o}6
Utility.sleep(500); ed',\+.uB
breakWhile = true; PZqp;!:xz
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for(int i=0;i<nStartPos.length;i++) BuRsz6n
{ rbdrs
if(!fileSplitterFetch.bDownOver) @H#Fzoo.
{ ,}'8.
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breakWhile = false; K2x2Y=
break; QK6_dIvDz
} Izu____
} 4w ,L
if(breakWhile) w%qnH e9
break; O-V]I0
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//count++; [XI:Yf
//if(count>4) P!f0&W
// siteStop(); SzB<PP2
} 'J} ?'{.
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System.err.println("文件下载结束!"); 9;6)b0=$
} 0M;El2
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catch(Exception e){e.printStackTrace ();} QnS^ G{
} ._tEDY/1m
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//获得文件长度 2_ u+&7
public long getFileSize() Z ;rM@x
{ H*k\C
int nFileLength = -1; KH?6O%d
try{ }[z7V
URL url = new URL(siteInfoBean.getSSiteURL()); sz270k%[
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); U=KUx
httpConnection.setRequestProperty("User-Agent","NetFox"); PUO7Z2
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int responseCode=httpConnection.getResponseCode(); 9F3,
if(responseCode>=400) x1g-@{8]j
{ -j<E_!t
processErrorCode(responseCode); >e/>@ J*
return -2; //-2 represent access is error vd#)+
} ;6hoG(3
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String sHeader; wX2U
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for(int i=1;;i++) /d|:
{ i9Bh<j>:J
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 5SUO`4L
//Utility.log(in.readLine()); '6NrL;
sHeader=httpConnection.getHeaderFieldKey(i); RICm$,
if(sHeader!=null) R[\1Kk(Zo
{ y lczM^@
if(sHeader.equals("Content-Length")) s'N <
{ ;Ngk"5
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); WxYEu+_
break; Y J,"@n_
} iNkN'("
} ~
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else 'L3MHTM>[
break; \36 G``e
} nU{Qi;0
} ?0dmw?i
catch(IOException e){e.printStackTrace ();} }[|9vF"g.y
catch(Exception e){e.printStackTrace ();} [g}#R#Y)
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Utility.log(nFileLength); w+')wyB
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return nFileLength; TDk[,4
} 8 0nu^_
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//保存下载信息(文件指针位置) MXl_{8
private void write_nPos() fCNQUK{Gs5
{ e}{#VB<
try{ 9C?SEbC
output = new DataOutputStream(new FileOutputStream(tmpFile)); RrBG=V
output.writeInt(nStartPos.length); 4Dzg r,V
for(int i=0;i<nStartPos.length;i++)
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{ {ly <%Q7j
// output.writeLong(nPos); $s1/Rmw
output.writeLong(fileSplitterFetch.nStartPos); Q}\\0ajS)
output.writeLong(fileSplitterFetch.nEndPos); Zbre5&aU
} `'iO+/;GY
output.close(); ;lE=7[UJ3X
} #E
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catch(IOException e){e.printStackTrace ();} u!~kmIa4
catch(Exception e){e.printStackTrace ();} rd%uc~/
} Z>R@
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//读取保存的下载信息(文件指针位置) ,<P"\W
private void read_nPos() Q'^'G>MBJ
{ (FGy"o%TP'
try{ (p#c p
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); &Hf%Va[B
int nCount = input.readInt(); $A 5O>
nStartPos = new long[nCount]; Kp7)my
nEndPos = new long[nCount]; o@PvA1
for(int i=0;i<nStartPos.length;i++) !!ZGNZ_
{ a"Iu!$&N
nStartPos = input.readLong(); oVP,ar0G
nEndPos = input.readLong(); T[e+iv<8j
} sF :pwI5^
input.close(); v~AshmP
} k
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catch(IOException e){e.printStackTrace ();} I_Lm[
catch(Exception e){e.printStackTrace ();} :/SGB3gb1t
} X7K{P_5l
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private void processErrorCode(int nErrorCode) Ux^ue9
{ {I0!q"sF
System.err.println("Error Code : " + nErrorCode); &.2%p
} J80&npsO
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//停止文件下载 %LHt{:9.
public void siteStop() )R<93`q
{ gGCr~.5
bStop = true;
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for(int i=0;i<nStartPos.length;i++) .#tA .%
fileSplitterFetch.splitterStop(); :0%[u(
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} D` cy.},L
} 5IzCQqOPgX
//负责部分文件的抓取 8f~*T
**FileSplitterFetch.java !W&|kvT^
*/ U74L:&yLI
package NetFox; 9_svtO ]P
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import java.io.*; vnbY^ASdw
import java.net.*; &a\w+
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public class FileSplitterFetch extends Thread { K0'p*[yO/j
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