/* B8Z66#EQ
**SiteFileFetch.java 7L"/4w
*/ .|-y+9IP
package NetFox; .IU+4ENSy4
import java.io.*; ]={Hq9d@
import java.net.*; cGKk2'v?
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public class SiteFileFetch extends Thread { 470Pig>I8
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SiteInfoBean siteInfoBean = null; //文件信息Bean k"$V O+}m
long[] nStartPos; //开始位置 9~yuyv4$
long[] nEndPos; //结束位置 nc)`ISI
FileSplitterFetch[] fileSplitterFetch; //子线程对象 H_^c K
long nFileLength; //文件长度 {VG6m
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boolean bFirst = true; //是否第一次取文件 R2@u[
boolean bStop = false; //停止标志 t,_[nu(~8%
File tmpFile; //文件下载的临时信息 r.5F^
DataOutputStream output; //输出到文件的输出流 VXS9E383
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 3}+
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public SiteFileFetch(SiteInfoBean bean) throws IOException iqeGy&F-
{ }p~%GA.=98
siteInfoBean = bean; &@+;]t
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); )3
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); "5K:"m
if(tmpFile.exists ()) ^da-R;o]
{ AP%h!b5v
bFirst = false; ";]m]PRAam
read_nPos(); 9`AQsZ2
} U^D7T|P$V
else om6R/K
{ , fn=%tiUk
nStartPos = new long[bean.getNSplitter()]; 2_Z60]
nEndPos = new long[bean.getNSplitter()]; RU=%yk-gM
} It[ ~0?+
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} 0ZN/-2c A#
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public void run() 75y#^pD?c
{ "5Mo%cUp
//获得文件长度 z~qQ@u|
//分割文件 [Wc 73-
//实例FileSplitterFetch Alz#zBGb
//启动FileSplitterFetch线程 ff0,K#-
//等待子线程返回 &n|gPp77$
try{ S%2qB;uw
if(bFirst) 3-'|hb
{ CfU)+20
nFileLength = getFileSize(); `0D+x
if(nFileLength == -1) #~b9H05D
{ `m5iZxhw
System.err.println("File Length is not known!"); V.J%4&^X
} gE1" .qC
else if(nFileLength == -2) y06 2/$*$
{ |dK-r
System.err.println("File is not access!"); /+u*9ZR&1
} 9YKEME+:
else bHCd|4e,2
{ Vq\6c
for(int i=0;i<nStartPos.length;i++) (c"!0v
{ IF=rD-x
nStartPos = (long)(i*(nFileLength/nStartPos.length)); N@g+51ye
} l-&f81W
for(int i=0;i<nEndPos.length-1;i++) -nW-I\d%
{ \iFE,z
nEndPos = nStartPos[i+1]; (ZYOm
} @cON"(
nEndPos[nEndPos.length-1] = nFileLength; dZ*o H#B
} LBg#KQ@
} +] #>6/2q
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//启动子线程 jVDNThm+
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ]zO]*d=m
for(int i=0;i<nStartPos.length;i++) g!$
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), rTH@PDk>)
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), x{rt\OT
nStartPos,nEndPos,i); .#X0P=
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); HwHI$IB
fileSplitterFetch.start(); )~6974
} MmX42;Pw
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), U+KbvkX wj
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); MIgIt"M jz
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", SNQ+ XtoO
nEndPos = " + nFileLength);
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// fileSplitterFetch[nPos.length-1].start(); &+\wYa,
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//等待子线程结束 IAfYlS#<yD
//int count = 0; , Le_PJY)
//是否结束while循环 tQ/U'Ap&
boolean breakWhile = false; er53?z7zP.
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while(!bStop) Y !`H_Qo
{ ;j$84o{
write_nPos(); *q^'%'
Utility.sleep(500); ,"D1!0
breakWhile = true; G
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for(int i=0;i<nStartPos.length;i++) Ct B>
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{ g$A1*<+
if(!fileSplitterFetch.bDownOver) W?@ ;(k
{ sIyLW
breakWhile = false; U}UIbJD*=
break; "PX~Yc
} |PWLFiT(>
} XLtuck
if(breakWhile) sx22|j`)V
break; 4o%hH
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//count++; L9x,G!
//if(count>4) F*a+&% Q
// siteStop(); t<e?f{Q5
} kr3ZqMfeI
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System.err.println("文件下载结束!"); pPIH`Iq
} YXmLd'F^3
catch(Exception e){e.printStackTrace ();} f`?|A
} U8moVj8w1
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//获得文件长度 =14p Ee
public long getFileSize() =~R0U
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int nFileLength = -1; Wjj'yqBO^
try{ }b1P!xb!A
URL url = new URL(siteInfoBean.getSSiteURL()); $Q?UyEi
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Lg'z%pi
httpConnection.setRequestProperty("User-Agent","NetFox"); Q 5Ln'La$
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int responseCode=httpConnection.getResponseCode(); k(T/ydrw
if(responseCode>=400) #*~#t4S-
{ ^D!UF(H
processErrorCode(responseCode); akaQ6DIdG
return -2; //-2 represent access is error aa$+(
} HbCM{A9
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String sHeader; }APf^Ry
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for(int i=1;;i++) _v_ak4m>
{ .rwZ`MP
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ,UY],;ib
//Utility.log(in.readLine()); dD#A.C,Rz
sHeader=httpConnection.getHeaderFieldKey(i); S]k<Ixvf
if(sHeader!=null) lx%<oC+M
{ d
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if(sHeader.equals("Content-Length")) qF>}"m
{ ).xQ~A\.
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); v\Q${6kEtx
break; SC'fT!
} 1;SWfKU?.
} !sUo+Y
else S_C+1e
break; 94H 6`
} d'PjO-"g
} + -U7ogs
catch(IOException e){e.printStackTrace ();} ^G=s<