/* H:E5xz3VQ
**SiteFileFetch.java Uf[T _
*/ P7Z<0Dt\}
package NetFox; <"NyC?b+G
import java.io.*; *?b@>_1K
import java.net.*; YZ{jP?x
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public class SiteFileFetch extends Thread { .='3bQ(UZ4
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SiteInfoBean siteInfoBean = null; //文件信息Bean {SHqW5VX
long[] nStartPos; //开始位置 q1<Fg.-r
long[] nEndPos; //结束位置 X#Ak'%J
FileSplitterFetch[] fileSplitterFetch; //子线程对象 V[To,f
long nFileLength; //文件长度 ][rTQt m
boolean bFirst = true; //是否第一次取文件 wC(XRqlE
boolean bStop = false; //停止标志 ^VC7C~NZ!M
File tmpFile; //文件下载的临时信息 6BR\iZ
DataOutputStream output; //输出到文件的输出流 )MMhlcNC
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) JgxA^>|9;
public SiteFileFetch(SiteInfoBean bean) throws IOException &,_?>.\[<
{ @>gD1Q7v b
siteInfoBean = bean; o9~h%&
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Qh
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tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); _u`B3iG
if(tmpFile.exists ()) A/hpYa
{ rS=tcBO
bFirst = false; %h3L
read_nPos(); '?z9,oW{
} %e(9-M4*
else zL6
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nStartPos = new long[bean.getNSplitter()]; kf}F}Ad:%
nEndPos = new long[bean.getNSplitter()]; D8q3TyCj%
} [}jj<!9A_;
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} >~.Zr3P6kC
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public void run() NW}>pb9
{ uDpf2(>s
//获得文件长度 d3\OHkM0^
//分割文件 7W6eiUI'
//实例FileSplitterFetch m]{<Ux
//启动FileSplitterFetch线程 *4r
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//等待子线程返回 T_(qN;_
try{ %kFTnXHK
if(bFirst) \.K\YAM<
{ dM$N1DB{U+
nFileLength = getFileSize(); T][-'0!
if(nFileLength == -1) =) mXCA^
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System.err.println("File Length is not known!"); Eqz4{\
} a7XXhsZ
else if(nFileLength == -2) N1D6D$s 0
{ zz7Y/653
System.err.println("File is not access!"); xn%l
} [0mFy)6
else "R@$Wu53|
{ ^8o_Iz)r,
for(int i=0;i<nStartPos.length;i++) yYxeNE"
{ I$3"|7[n
nStartPos = (long)(i*(nFileLength/nStartPos.length)); cq'}2pob
} ^yEj]]6
for(int i=0;i<nEndPos.length-1;i++) Q0
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{ w>`h3;,2
nEndPos = nStartPos[i+1]; 7yq7a[Ra
} 1YF+(fk
nEndPos[nEndPos.length-1] = nFileLength; ``2QOu 1
} C8bGae(
} [H6X2yjj|
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//启动子线程 fD3jwPL
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; dy2_@/T7
for(int i=0;i<nStartPos.length;i++) rL!_&|
{ 'S%} ?#J
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 7/p J6>
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), AHp830\
nStartPos,nEndPos,i); .-O@UQx.I
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); '[M^f+H|
fileSplitterFetch.start(); ?$)x$nS`
} K$37}S5
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %v`-uAy:
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1);
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 8osS OOzM
nEndPos = " + nFileLength); ?d>P+).
// fileSplitterFetch[nPos.length-1].start(); xzMeKC`
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//等待子线程结束 ^.Ih,@N6
//int count = 0; @aqd'O
//是否结束while循环 |%2/I>o
boolean breakWhile = false; O$<%z[
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while(!bStop) xnRp/I
{ %X0NHta~@
write_nPos(); ]@ Sc}
Utility.sleep(500); <.A C=4@V
breakWhile = true; R[>;_}5">
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for(int i=0;i<nStartPos.length;i++) qUDz(bFk/
{ }`<>$2b
if(!fileSplitterFetch.bDownOver) C<wj?!v,F[
{ xT=kxyu
breakWhile = false; MWn L#!
break; SILvqm
} |peMr#
} ?2;n=&ZM
if(breakWhile) )- 6s7
break; $ )TF,-#x
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//count++; ?lET45'
//if(count>4) Br ^rK}|l
// siteStop(); "$V 8y
} 1{Alj27
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System.err.println("文件下载结束!"); 2YE]?!
}
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catch(Exception e){e.printStackTrace ();} |jaY[_.@
} B[0,\>
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//获得文件长度 i!d7,>l+Q~
public long getFileSize() `Z7ITvF>
{ $vGEY7,
int nFileLength = -1; |YGiATD4DG
try{ oCdOC5
URL url = new URL(siteInfoBean.getSSiteURL()); MMA@J
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 2gD{Fgf@N
httpConnection.setRequestProperty("User-Agent","NetFox"); HsgTHe
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int responseCode=httpConnection.getResponseCode(); X$&Sw3c
if(responseCode>=400) q.QYn.CBZz
{ v
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processErrorCode(responseCode); a[cH@7W.#
return -2; //-2 represent access is error ZL@DD(S-/
} }o:sx/=u_
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String sHeader; S|4/C
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for(int i=1;;i++) VEEeQy
{ H
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Z_~DTO2Qg
//Utility.log(in.readLine()); ?8}jJw2H
sHeader=httpConnection.getHeaderFieldKey(i); !jq6cND
if(sHeader!=null) ~2}ICU5
{ (3r,PS@Qq@
if(sHeader.equals("Content-Length")) jtr=8OiL
{ <sB45sNbU`
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); NS;8&