/* O@a7MzJ
**SiteFileFetch.java =g$%jM>35
*/ i93^E~q]
package NetFox; Q+*@!s
import java.io.*; ?8YbTn1f)
import java.net.*; ,6aF~p;wI|
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public class SiteFileFetch extends Thread { JZ/T:Hsh4
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SiteInfoBean siteInfoBean = null; //文件信息Bean M=4`^.Ocm
long[] nStartPos; //开始位置 ; jrmr`l=
long[] nEndPos; //结束位置 >3&9Wbv>
FileSplitterFetch[] fileSplitterFetch; //子线程对象 m2[J5n?zLL
long nFileLength; //文件长度 /|@~:5R5H
boolean bFirst = true; //是否第一次取文件 ;&XC*R+
boolean bStop = false; //停止标志 ohi0_mBz
File tmpFile; //文件下载的临时信息 c9Q _Qr0'
DataOutputStream output; //输出到文件的输出流 *RFBLCt
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) uG(XbDZZ1W
public SiteFileFetch(SiteInfoBean bean) throws IOException P?+
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siteInfoBean = bean; ]>[0DX]j
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); w{ Pl
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); [X ]XH
if(tmpFile.exists ()) <(l`zLf4p
{ lqvP
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bFirst = false; !J[! i"e
read_nPos(); :VE0eJ]J6
}
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else 'ql<R0g
{ NMESGNa)z
nStartPos = new long[bean.getNSplitter()]; }O2P>Z?V
nEndPos = new long[bean.getNSplitter()]; bSa]={}L(
} bd[iD?epD]
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public void run() i:H]Sb)<b
{ 9Dd`x7$a
//获得文件长度 @/xdWN!,
//分割文件 j|@8VxZ
//实例FileSplitterFetch {Rn*)D9
//启动FileSplitterFetch线程 E5Lq-
//等待子线程返回 [X kWPx`
try{ 3U*4E?g
if(bFirst) L;fz7?_j
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nFileLength = getFileSize(); M-(,*6Q
if(nFileLength == -1) 7A{Z1[7
{ \mqrDaB
System.err.println("File Length is not known!"); n!U1cB{
} ;rl61d}NH#
else if(nFileLength == -2) Nhtc^DX
{ n>,? V3ly
System.err.println("File is not access!"); k=X)axt1
} d"S\j@
else 6iY(RYZ7-
{ KON^
for(int i=0;i<nStartPos.length;i++) P`y.3aK
{ >RrG&Wv59
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 10_>EY`
} uJa.]J~L=
for(int i=0;i<nEndPos.length-1;i++) @*WrHoa2N
{ +9M";'\c
nEndPos = nStartPos[i+1]; 10tTV3`IM
} Wr8}=\/
nEndPos[nEndPos.length-1] = nFileLength; @B!gxW\C
} 'fZ\uMdTx
} rpEN\S%7P
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//启动子线程 JO~62='J
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 7_J0[C!G
for(int i=0;i<nStartPos.length;i++) 6Q_ZP#oAV
{ {uxTgX
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), QFFFxaeJg
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), xrkR)~ E
nStartPos,nEndPos,i); !1l~'/r
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); GyfKSj;
fileSplitterFetch.start(); >b8-v~o{
} 5+t$4N+P
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), h r6?9RJY
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); #P
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", T>,[V:
nEndPos = " + nFileLength); &,* ILz
// fileSplitterFetch[nPos.length-1].start(); 27MwZz
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//等待子线程结束 BCX2C
//int count = 0; (IIZ vCek
//是否结束while循环 DX ZZZ[#
boolean breakWhile = false; ,lVQ-qw5
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while(!bStop) BE!l{
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write_nPos(); )!;20Po
Utility.sleep(500); >` u8(
breakWhile = true; c GyBml1
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for(int i=0;i<nStartPos.length;i++) j.c{%UYj
{ Uy?X-"UR
if(!fileSplitterFetch.bDownOver) M^G9t*I
{ &AVX03P
breakWhile = false; #k,.xMJ~
break; (Dn1Eov
} kV4L4yE
} $"va8,
if(breakWhile) <YrsS-9
break; bm h@SB
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//count++; +W8kMuM!
//if(count>4) Hm+VGH'H?
// siteStop(); 2'Raj'2S4
} }0]iS8*tL
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System.err.println("文件下载结束!"); @X P_~ N
} .pH 4[~
catch(Exception e){e.printStackTrace ();} /?a9g>G%N
} )(pgJLW
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//获得文件长度 9t8ccr
public long getFileSize() =%|f-x
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int nFileLength = -1; i8%Z(@_`
try{ <[=[|DS l
URL url = new URL(siteInfoBean.getSSiteURL()); 8C*xrg#g:
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); sXYXBX[
httpConnection.setRequestProperty("User-Agent","NetFox"); 5C9
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int responseCode=httpConnection.getResponseCode(); ZgmK~iJ
if(responseCode>=400) {fY(zHC
{ XW+-E^d
processErrorCode(responseCode); X|L_}Q7
return -2; //-2 represent access is error fw|t`mUGu
} IDdu2HNu
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