/* !X5o7b )
**SiteFileFetch.java n0rerI[R
*/ B>~k).M&,
package NetFox; G$;>ueM
import java.io.*; ./ "mn3U
import java.net.*; +(;8@"u
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V/aQ*V{
public class SiteFileFetch extends Thread { !Oeq
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SiteInfoBean siteInfoBean = null; //文件信息Bean [ 3$.*
long[] nStartPos; //开始位置 t{_!Z(Rt5)
long[] nEndPos; //结束位置 2Ryp@c&r^
FileSplitterFetch[] fileSplitterFetch; //子线程对象 N=>- Q)
long nFileLength; //文件长度 Y.DwtfE
boolean bFirst = true; //是否第一次取文件
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boolean bStop = false; //停止标志 yJnPD/i
File tmpFile; //文件下载的临时信息 X3P&"}a
DataOutputStream output; //输出到文件的输出流 ^Vag1(hdq
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 7<^'DOs
public SiteFileFetch(SiteInfoBean bean) throws IOException q&u$0XmV
{ W;^N8ap%
siteInfoBean = bean; `Jn,IDq
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); OZG0AX+=#
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ?sV[MsOsC
if(tmpFile.exists ()) {J{1`@
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bFirst = false; ;xL67e%?
read_nPos(); gzor%)C
} Y;8
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else P?uf?{
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nStartPos = new long[bean.getNSplitter()]; !]yQ1@)*'
nEndPos = new long[bean.getNSplitter()]; ;U
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public void run() |Td_S|:d
{ kg:l:C)Tq
//获得文件长度 ^b=XV&{q
//分割文件 0Su_#".-*
//实例FileSplitterFetch q'.;W@m
//启动FileSplitterFetch线程 2sUbiDe-
//等待子线程返回 3)y{n%3L
try{ KCD5*xH
if(bFirst) j$+gq*I&E
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nFileLength = getFileSize(); 3x![8 x
if(nFileLength == -1) 57U%`
{ i-,'.w
System.err.println("File Length is not known!"); r
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} ~Yl<S(/4
else if(nFileLength == -2) >{QdMn
{ wk@yTTnb
System.err.println("File is not access!"); i *B:El1
} %lV@:"G
else rhIGOk1k
{ LP ,9<&"<
for(int i=0;i<nStartPos.length;i++) M\dO({o
{ p'80d:
nStartPos = (long)(i*(nFileLength/nStartPos.length)); AVv#\JrRW
} -?5$ PH
for(int i=0;i<nEndPos.length-1;i++) %@P``
{ ywEDy|Wn$~
nEndPos = nStartPos[i+1]; x<@kjfm5
} -AC`q/bCD
nEndPos[nEndPos.length-1] = nFileLength; O~6Q;q P
} *0~M
} x{Sd
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//启动子线程 ESIzGaM
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; xg} ug[
for(int i=0;i<nStartPos.length;i++) "J!}3)n
{ YDFCGA
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), /[iG5~G
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), f^?uY8<
nStartPos,nEndPos,i); /l6\^Xf{
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); KmL$M
fileSplitterFetch.start(); IA2GUnUhu
} cOb4c*
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [O_^MA,z
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 5B{k\H;
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", U CRAw3=
nEndPos = " + nFileLength); sAYV)w3u"
// fileSplitterFetch[nPos.length-1].start(); hiwIWd:H
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//等待子线程结束 %b=p< h'(
//int count = 0; VFSz-<L
//是否结束while循环 ue6d~8&
boolean breakWhile = false; {6O0.}q]&
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while(!bStop) BS7J#8cu
{ 94{)"w]
write_nPos(); .oR3Q/|k]
Utility.sleep(500); 2]2H++
breakWhile = true; :6lwO%=F
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for(int i=0;i<nStartPos.length;i++) `c(\i$1JY)
{ eg3L:rk_
if(!fileSplitterFetch.bDownOver) qS.)UaA
{ 2*u.3,aW
breakWhile = false; yN\e{;z`
break; U-EhPAB@
} bRPO:lAy
} 6peyh_
if(breakWhile) ]1sNmi$T
break; O?ktWHUx
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//count++; q4ipumy*
//if(count>4) Rri`dmH
// siteStop(); vT7g<
} JE!("]&
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System.err.println("文件下载结束!"); |0
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} )a cV-+{
catch(Exception e){e.printStackTrace ();} 6E|S
} IU!Ht>
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//获得文件长度 #?&0D>E?k
public long getFileSize() (oaYF+T
{ s[AA7>]3
int nFileLength = -1; Rj6|Y"gq9
try{ o8z)nOTO;
URL url = new URL(siteInfoBean.getSSiteURL()); KcXpH]>!9
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 6G_<2bO
httpConnection.setRequestProperty("User-Agent","NetFox"); ue0s&WF|
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int responseCode=httpConnection.getResponseCode(); {1~T]5
if(responseCode>=400) <KQ(c`KW7
{ &[j]Bp?
processErrorCode(responseCode); ndi+xaQtG
return -2; //-2 represent access is error n%$ &=-Fk
} NL!9U,h5|
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String sHeader; yA;W/I4
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for(int i=1;;i++) tu}>:mk
{ U<bYFuS"
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); _H\<[-l
//Utility.log(in.readLine()); Zdn!qyR`
sHeader=httpConnection.getHeaderFieldKey(i); dGkgaC+
if(sHeader!=null) JP'=
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{ >Ko[Xb-8^_
if(sHeader.equals("Content-Length")) 9_huI'"p
{ J(iV0LAZb
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); g7V_[R(6
break; bQQVj?8jp
} A6p`ma $L
} ;p Z[|
else P(ZQDTbM
:
break; edpW8eND
} ~UPZ<
} 'Q|c@t
catch(IOException e){e.printStackTrace ();} FFzH!=7T?
catch(Exception e){e.printStackTrace ();} u#jC#u^M
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Utility.log(nFileLength); `X
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return nFileLength; #n7Yr,|Z
} FvXqggfGv
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//保存下载信息(文件指针位置) nSS=%,?
private void write_nPos() m<@z}%v-
{ /A07s[L
try{ bFGDgwe z
output = new DataOutputStream(new FileOutputStream(tmpFile)); @ 4UxRp6+
output.writeInt(nStartPos.length); 2{oThef[O
for(int i=0;i<nStartPos.length;i++) @Icq1zb]
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{ 3S"] u}
// output.writeLong(nPos); d3^7ag%
output.writeLong(fileSplitterFetch.nStartPos); sb.J
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output.writeLong(fileSplitterFetch.nEndPos); jP=Hf=:$
} (^: p
output.close();
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} \}dyS8
catch(IOException e){e.printStackTrace ();} ~W{-Q.
catch(Exception e){e.printStackTrace ();} Ge \["`;i
} 3W&S.$l
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//读取保存的下载信息(文件指针位置) @;)PSp*j
private void read_nPos() k1}hIAk3u
{ f8n
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try{ HW 6.O|3
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 0Y?H0
int nCount = input.readInt(); %oof}=MxCL
nStartPos = new long[nCount]; `f`TS#V
nEndPos = new long[nCount]; q``wt
for(int i=0;i<nStartPos.length;i++) 5<R%H{3j
{ q=5l4|1
nStartPos = input.readLong(); %1}6q`:w
nEndPos = input.readLong(); Qn+:/zA;
} 63&^BW
input.close(); Qc"'8kt
} ^[q /Mw
catch(IOException e){e.printStackTrace ();} g>j| ]6
catch(Exception e){e.printStackTrace ();} NiSO'=y$n
} Xe1P- 60
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