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**SiteFileFetch.java ?121 as}z
*/ e'~Qe_
package NetFox; Uhu?G0>O
import java.io.*; 8K^#$,.."
import java.net.*; xlcCL?qQj
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public class SiteFileFetch extends Thread { hxdjmc-
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SiteInfoBean siteInfoBean = null; //文件信息Bean )4o8SF7lz
long[] nStartPos; //开始位置 |`yU \
long[] nEndPos; //结束位置 DK2Wjr;
FileSplitterFetch[] fileSplitterFetch; //子线程对象 .|"E:qTD
long nFileLength; //文件长度 ,&Zp^
boolean bFirst = true; //是否第一次取文件 =ZSYg K
boolean bStop = false; //停止标志 .NWsr*Tel
File tmpFile; //文件下载的临时信息 A46dtFD{
DataOutputStream output; //输出到文件的输出流 CUB;0J(
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) [cFD\"gJAr
public SiteFileFetch(SiteInfoBean bean) throws IOException f2tCB1[D+
{ +% <kcc3
siteInfoBean = bean; ZK?V{X{";
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Zk7!CJVM
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ;=0-B&+v
if(tmpFile.exists ()) ,aWI&ve6
{ %-YWn`yEm
bFirst = false; G;u 6p
read_nPos(); 3]iw3M
} f7zB_hVDmE
else V(XU^}b#
{ Mmgm6{
nStartPos = new long[bean.getNSplitter()]; C-_u`|jQ
nEndPos = new long[bean.getNSplitter()]; r:rPzq1
} Bd*Ok]
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} f*V^HfiQb
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public void run() x`2dN/wDhf
{ 5T"h7^}e
//获得文件长度 +
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//分割文件 Tq^B>{S"
//实例FileSplitterFetch (^T}6t3+4
//启动FileSplitterFetch线程 ZCK#=:ln
//等待子线程返回 ^-Ks_4
try{ AN,3[Sh
if(bFirst) s!W{ru
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nFileLength = getFileSize(); f% 8n?f3;u
if(nFileLength == -1) Dd
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{ J;V#a=I
System.err.println("File Length is not known!"); 3Zz_wr6
} sw$JY}Q8x
else if(nFileLength == -2) MB5V$toC
{ >!PM5%G
System.err.println("File is not access!"); mE+=H]`.p
} PMiu "
else ?mi}S${g
{ ;p,Kq5,l
for(int i=0;i<nStartPos.length;i++) SA"4|#3>7
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); 6QHUBm2
} M"-53|#:w\
for(int i=0;i<nEndPos.length-1;i++) #p{8
{ 1@-l@ P
nEndPos = nStartPos[i+1]; ?iaO+G&|
} rIyIZWkI
nEndPos[nEndPos.length-1] = nFileLength; t[({KbIy
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} Qm[ ) [M
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//启动子线程 C-:|A* z
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; < A`srmS?
for(int i=0;i<nStartPos.length;i++) )):D&wlq
{ ()Img.TIt
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .<K9Zyi
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), p:|7d\r
nStartPos,nEndPos,i); F(U(b_DPM
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); V+u0J"/8
fileSplitterFetch.start();
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} bHDZ=Ik
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ZSwhI@|
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 25vq#sS]
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", m9 'bDyyK
nEndPos = " + nFileLength); ^MWp{E
// fileSplitterFetch[nPos.length-1].start(); mphs^k< Z
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//等待子线程结束 T[ zEAj
//int count = 0; \ 6Y%z
//是否结束while循环 6m9\0)R
boolean breakWhile = false; DI :
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while(!bStop) 4SkCV
{ EBmkKiI;
write_nPos(); ?;rRR48T9E
Utility.sleep(500); 9:!V":8q
breakWhile = true; >(gbUW
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for(int i=0;i<nStartPos.length;i++) ?R@u'4yK
{ V4*/t#L/
if(!fileSplitterFetch.bDownOver) bM,%+9oz;
{ Z%{`j!!p
breakWhile = false; [Z[ p@Ux
break; 2"Ki5
} BS?rKtdm(
} _:XX+3W7
if(breakWhile) gp\o|igT
break; %pxHGO=)E
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//count++; s8*Q@0
//if(count>4) aO
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// siteStop(); 7$kTeKiP
} +W|VCz
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System.err.println("文件下载结束!"); _nIt4l7
} kc[<5^b5
catch(Exception e){e.printStackTrace ();} q$B|a5a?
} pQCW6X
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//获得文件长度 7]
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public long getFileSize() P.Qz>c^-C
{ )9{!=k
int nFileLength = -1; D'
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try{ X$<CIZ
URL url = new URL(siteInfoBean.getSSiteURL()); /,9n1|FrG
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); AR)A <