/* 5a_1x|Fhi
**SiteFileFetch.java vJK0>":G
*/ J6=*F;x6E
package NetFox; iN=-N=
import java.io.*; N^:)U"9*e
import java.net.*; bW[Y:}Hk~
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public class SiteFileFetch extends Thread { qm8[ ^jO&
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SiteInfoBean siteInfoBean = null; //文件信息Bean l2._Z
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long[] nStartPos; //开始位置 1dHN<xy
long[] nEndPos; //结束位置 S9U`-\L0
FileSplitterFetch[] fileSplitterFetch; //子线程对象 \M<C6m5
long nFileLength; //文件长度 jDOB(fE
boolean bFirst = true; //是否第一次取文件 %Q]m6ciAM
boolean bStop = false; //停止标志 3)p#}_u{
File tmpFile; //文件下载的临时信息 RCgZ GP
DataOutputStream output; //输出到文件的输出流 {rf.sN~M
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) "0pu_
public SiteFileFetch(SiteInfoBean bean) throws IOException 6|~N5E~SX
{ "Lw[ $
siteInfoBean = bean; ~X)Aw3}F
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Z;-=x p
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); |*K AqTO0
if(tmpFile.exists ()) IP9mv`[
{ hvwKhQ}wX
bFirst = false; (TgLCT[@T
read_nPos(); jgK8} C
} +?DP r
else 1T!(M"'Ij
{ tp7cc;0
nStartPos = new long[bean.getNSplitter()]; Am{Vtl)i
nEndPos = new long[bean.getNSplitter()]; nj]l'~Y0
} |W:xbtPNy
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} 8t25wPlx
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public void run() F^fL
{ 6Q"fRXM
//获得文件长度 >;:235'(M
//分割文件 7A<X!a
//实例FileSplitterFetch "**Tw'
//启动FileSplitterFetch线程 4"at~K`
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//等待子线程返回 Py_yIwQqg
try{ p.~hZ+ x_
if(bFirst) RoS&oGYqR
{ 0g o{gUI
nFileLength = getFileSize(); Wl\.*^`k
if(nFileLength == -1) bbddbRj;
{ 6QO[!^lY
System.err.println("File Length is not known!"); leR-oeSO
} ~
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else if(nFileLength == -2) pMndyuoJl
{ KxhMPvN'
System.err.println("File is not access!"); +-"uJIwMD
} n
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else |KY6IGcqV
{ 8A'oK8Q
for(int i=0;i<nStartPos.length;i++) QMwrt
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); __LR!F]=i
} 0 w Q'~8
for(int i=0;i<nEndPos.length-1;i++) +&bJhX
{ m~c6b{F3Z-
nEndPos = nStartPos[i+1]; VC~1QPC9
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nEndPos[nEndPos.length-1] = nFileLength; FabgJu
} -]n\|U<
} t}6QU
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//启动子线程 %'+}-w
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; vJI]ZnL{
for(int i=0;i<nStartPos.length;i++) 2zE gAc
{ %JoHc?
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), EC;R^)
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), |2AMj0V~
nStartPos,nEndPos,i); 6,Z.RT{5
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Mj!\EUn
fileSplitterFetch.start(); <UsFB F
} &lM=>?
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), )IBvm1
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); S@4p.NMU
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", IX+!+XC"U
nEndPos = " + nFileLength); 8/gA]I
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// fileSplitterFetch[nPos.length-1].start(); )@(IhU)
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//等待子线程结束 t9l]ie{"o.
//int count = 0; W?TvdeBx
//是否结束while循环 VcX89c4\
boolean breakWhile = false; @3*S:;x
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while(!bStop) pf% yEz
{ /qaWUUf
write_nPos(); a=_:`S]}
Utility.sleep(500); CWdpF>En
breakWhile = true; w 3kX!%a:
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for(int i=0;i<nStartPos.length;i++) u!CcTE*
{ GD-L0kw5
if(!fileSplitterFetch.bDownOver) 9z#z9|hj)3
{ N++ ;}j
breakWhile = false; h~`^H9?M
break; kY?w] lS)t
} W*;r}!ro
} 4++
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if(breakWhile) tNvjwgV\
break; 7?@ -|{
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//count++; tqD=)0Uzs
//if(count>4) ls({{34NF
// siteStop(); ^#gJf*'UE
} 4|/}~9/
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System.err.println("文件下载结束!"); A1Es>NK[qW
} !&adO,jN+=
catch(Exception e){e.printStackTrace ();} V7<w9MM
} +v+Dkyf:V
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//获得文件长度 1<G, 0Lt
public long getFileSize() )vD:
{ ]P*H,&I`#
int nFileLength = -1; U!
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try{ hG2WxYk
URL url = new URL(siteInfoBean.getSSiteURL()); |mQC-=6t;Y
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); qm/#kPlM
httpConnection.setRequestProperty("User-Agent","NetFox"); (M#m BS
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int responseCode=httpConnection.getResponseCode(); RF }R~m9]
if(responseCode>=400) oH(a*i
{ zDf96eK
processErrorCode(responseCode); ;$vVYC
return -2; //-2 represent access is error S&F[\4w5]
} Df@b;-E
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String sHeader; .I Io
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for(int i=1;;i++) nxJx 8d"
{ f5z*AeI
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Ca["tks
//Utility.log(in.readLine()); 6!@p$ pm)a
sHeader=httpConnection.getHeaderFieldKey(i); >r>pM(h
if(sHeader!=null) c?*x2Vk
{ cwE?+vB
if(sHeader.equals("Content-Length")) [(; .D
{ %O9P|04]3
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); gI/SA
break; "^)$MAZ
} *7{{z%5Pu
} hAJ^(|
else *SYuq)
break; 4N)45@jk[
} "
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} 5Mp$u756
catch(IOException e){e.printStackTrace ();} 0HI0/Tvu$<
catch(Exception e){e.printStackTrace ();} W[LQ$uj
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Utility.log(nFileLength); G;e)K\[J
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return nFileLength; qFp]jbU
} GPrq(
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//保存下载信息(文件指针位置) =)f.Yf|A*
private void write_nPos() zG7y$\A
{ 8CUl |I ~
try{ MSb0J `
output = new DataOutputStream(new FileOutputStream(tmpFile)); %<>|cO
output.writeInt(nStartPos.length); F6ZL{2$k@
for(int i=0;i<nStartPos.length;i++) 7g4IAsoD
{ ?NxaJ^
// output.writeLong(nPos); K8uqLSP '
output.writeLong(fileSplitterFetch.nStartPos); _6`H`zept
output.writeLong(fileSplitterFetch.nEndPos); +.a->SZ5"
} :n OCs
output.close(); g6h=Q3@
} Yq:+.UU
catch(IOException e){e.printStackTrace ();} l]L"Ex{
catch(Exception e){e.printStackTrace ();} $ VeQvm*
} L;U?s2&Y
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//读取保存的下载信息(文件指针位置) Dc3bG@K*G
private void read_nPos() [M?&JA