/* Z:ni$7<.
**SiteFileFetch.java 'iy*^A `Y
*/ qNI,
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package NetFox; YiYV>gaf"H
import java.io.*; vK(i9>;7
import java.net.*; lW<PoT
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public class SiteFileFetch extends Thread { -<Hu!V`+
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SiteInfoBean siteInfoBean = null; //文件信息Bean TqNadHQ
long[] nStartPos; //开始位置 b5,x1`#7k
long[] nEndPos; //结束位置 J~%K_~Li
FileSplitterFetch[] fileSplitterFetch; //子线程对象 wpN k+;
long nFileLength; //文件长度 GGe,fb<k
boolean bFirst = true; //是否第一次取文件 ;?W|#*=R
boolean bStop = false; //停止标志 D*Ik7Pe
File tmpFile; //文件下载的临时信息 ?aC'.jH+
DataOutputStream output; //输出到文件的输出流 y[>;]R7'
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ng:kA%!
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public SiteFileFetch(SiteInfoBean bean) throws IOException nM\eDNK
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siteInfoBean = bean; ;WgJ<&33
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); >a"Z\\dF
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); GQ*wc?f3
if(tmpFile.exists ()) A;5n:Sd
{ ,B08i
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bFirst = false; SaC d0. h
read_nPos(); _tSAI
} 76>7=#m0u'
else [v$0[IuY,
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nStartPos = new long[bean.getNSplitter()]; cHcmgW\4
nEndPos = new long[bean.getNSplitter()]; J~B<7O<?!1
} 7Q7-vx
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} 4VHqBQ4
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public void run() n"+[ :w4
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//获得文件长度 k4,BNJt'Z
//分割文件 fq5_G~c=
//实例FileSplitterFetch C|d\3S\(
//启动FileSplitterFetch线程 O@MGda9_;
//等待子线程返回 /c"efnb!
try{ ?|WoIV.
if(bFirst) !iH-#B-
{ bKj%s@x
nFileLength = getFileSize(); PlF87j (
if(nFileLength == -1) M~WijDj
{ LUH"
System.err.println("File Length is not known!"); RG3l.jL
} SF}<{x_
else if(nFileLength == -2) WX}xmtLs
{ uum;q-"
System.err.println("File is not access!"); )'/|)
} umF
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else .fN"@l
{ &j?#3Qt'_
for(int i=0;i<nStartPos.length;i++) @Ukr
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); F6o_b4l
} @Ys!DScY,
for(int i=0;i<nEndPos.length-1;i++) !FA# K8
{
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nEndPos = nStartPos[i+1]; c~{9a_G
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nEndPos[nEndPos.length-1] = nFileLength; s
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} qb5#_1qz+^
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//启动子线程 HS{(v;
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; AjJURn0`,!
for(int i=0;i<nStartPos.length;i++) _<=S_<$2
{ "jTKSgv+q5
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), NZP.0coY
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), w?zKjqza=v
nStartPos,nEndPos,i); 56e r`=ms
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos);
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fileSplitterFetch.start(); 7M<'ddAN
} `W dD8E
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), lIUuA
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); : p{+G
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", >$ NDv
nEndPos = " + nFileLength); >*-FV{{
// fileSplitterFetch[nPos.length-1].start(); lc2 i`MC
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//等待子线程结束 j
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//int count = 0; |,#t^'S!
//是否结束while循环 MZTx:EN!
boolean breakWhile = false; yu6`66h)
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while(!bStop) is1' s[
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write_nPos(); }j2Y5
Utility.sleep(500); rC.eyq,105
breakWhile = true; 'mH )d
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for(int i=0;i<nStartPos.length;i++) {/X4(;~0
{ 4q'B<7{Q
if(!fileSplitterFetch.bDownOver) :N<.?%Kf
{ d~/q"r 1"
breakWhile = false; JCPUM*g8
break; #'-Sh7ycW
} UK$ms~H
} v1|Bf8
if(breakWhile) 6*qL[m.F[o
break; @*0cMO;SpG
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//count++; 21ppSN>
//if(count>4) }w/;){gu
// siteStop(); Iq# ZhAk
} -pU|hSW*b
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System.err.println("文件下载结束!"); oT{@_U{*J
} $`8Ar,Xz`
catch(Exception e){e.printStackTrace ();} E,wVe[0)f
} ZT[3aXS
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//获得文件长度 Yz4_vePh+5
public long getFileSize() N%7{J
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int nFileLength = -1; \":?xh_H
try{ E]J:~H'Er
URL url = new URL(siteInfoBean.getSSiteURL()); R g?1-|Tj
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); AsPx?
httpConnection.setRequestProperty("User-Agent","NetFox"); ;>%~9j1C
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int responseCode=httpConnection.getResponseCode(); 5jgdbHog]
if(responseCode>=400) '=E3[0W
{ uk9g<<3T
processErrorCode(responseCode); Zes+/.sA}]
return -2; //-2 represent access is error Wxkx,q?
} Nrah;i+H\o
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String sHeader; 9D 0dg(
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for(int i=1;;i++) 7QVuc!V
{ g|Y] wd
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); O<jPGU
//Utility.log(in.readLine()); {/LZcz[
sHeader=httpConnection.getHeaderFieldKey(i); 9'DtaTmGW
if(sHeader!=null) 3IR
^
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if(sHeader.equals("Content-Length")) N7%TYs
{ FP#FB$eP
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 7l."b$U4yv
break; .c^
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} _1*7Z=|
} ~gI{\iNF/
else /<&h@$NHH4
break; yMc:n"-[
} 6yu]GK}es
} kvGCbRC
catch(IOException e){e.printStackTrace ();} h{}mBQl
catch(Exception e){e.printStackTrace ();} ?X9]HlH
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Utility.log(nFileLength); SQWafD
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return nFileLength; Ogg#jx(4
} Jqr)V2Y
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//保存下载信息(文件指针位置) RGD]8mw
private void write_nPos() a
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{ G",.,Px
try{ `nJu?5
output = new DataOutputStream(new FileOutputStream(tmpFile)); Ybg-"w
output.writeInt(nStartPos.length); Zg:gY"^
for(int i=0;i<nStartPos.length;i++) p"`%
{ -Dzsa
// output.writeLong(nPos); ,Vd7V}t
output.writeLong(fileSplitterFetch.nStartPos); BF8"rq}r0
output.writeLong(fileSplitterFetch.nEndPos); JmOW~W
} -DO&