/* 0kkRK*fp}x
**SiteFileFetch.java \dC.%#
*/ E*Pz <
package NetFox; | pF5`dX
import java.io.*; 7k.d|<mRv
import java.net.*; ]6jHIk|
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public class SiteFileFetch extends Thread { f34_?F<h
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SiteInfoBean siteInfoBean = null; //文件信息Bean bX a %EMF
long[] nStartPos; //开始位置 =PI^X\if88
long[] nEndPos; //结束位置 >hHJ:5y
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ,w,ENU0~f
long nFileLength; //文件长度 <)r,CiS
boolean bFirst = true; //是否第一次取文件 @$2`DI{_^
boolean bStop = false; //停止标志 <\B],M1=s=
File tmpFile; //文件下载的临时信息 z4 GN8:~x
DataOutputStream output; //输出到文件的输出流 AN|jFSQ'
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Z&AHM &,yj
public SiteFileFetch(SiteInfoBean bean) throws IOException Np|:dP9#}
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siteInfoBean = bean; =x|##7
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Bl>_&A)
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); !l sy&6
if(tmpFile.exists ()) Oz"@yL}
{
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bFirst = false; `V?x
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read_nPos(); XLkL#&Ir
} "`gf y
else RTdD]pE8Q
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nStartPos = new long[bean.getNSplitter()]; (OM?aW
nEndPos = new long[bean.getNSplitter()]; .6lY*LI
} Y&ct+w]%
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} 4d{"S02h
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public void run() S!`4Bl
{ @d8&3@{R^
//获得文件长度 -D.BJ(
//分割文件 gb!@OZ c
//实例FileSplitterFetch f;@b
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//启动FileSplitterFetch线程 u|_ITwk
//等待子线程返回 rCnV5Yb0O
try{ d/ 'A\"o+
if(bFirst) D=5t=4^H(
{ 7Va#{Y;Zy
nFileLength = getFileSize();
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if(nFileLength == -1) .N2nJ/
{ ZuF4N=;
System.err.println("File Length is not known!"); *IMF4x5M
} >oM9~7f
else if(nFileLength == -2) a"v"n$
{ 4)x3!Ol
System.err.println("File is not access!"); DK#65H'
} Nqo#sBS
else 'O\d<F.c$2
{ 1j${,>4tQ
for(int i=0;i<nStartPos.length;i++) =jk-s*g
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); =F^->e0N
} }iiG$?|.
for(int i=0;i<nEndPos.length-1;i++) fl5UY$a2-
{ YW4bm
nEndPos = nStartPos[i+1]; _{2Fx[m%
} 3isXgp8
nEndPos[nEndPos.length-1] = nFileLength; wB1-|=K1
} Pq[0vZ_}dN
} NIWI6qCw
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//启动子线程 u~naVX\3b
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 84hi, S5P
for(int i=0;i<nStartPos.length;i++) .yFg$|y G
{ M2zos(8g
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), "c !oOaA
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),
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nStartPos,nEndPos,i); (>+k 3
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 5tgILxSK
fileSplitterFetch.start(); Hb@G*L$
} 4$q)e<-
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), _x,-d|9bd
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); }]n>A
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", lD;,I^Lt6
nEndPos = " + nFileLength); x|,aV=$o
// fileSplitterFetch[nPos.length-1].start(); `ykMh>*{
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//等待子线程结束 dEAAm=K,<
//int count = 0; 2EqsfU*
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//是否结束while循环 =yhn8t7@]
boolean breakWhile = false; <g/(wSl
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while(!bStop) >2/wzsW
{ QBPvGnb
write_nPos(); #<WyId(
Utility.sleep(500); U~){$kpI#
breakWhile = true; !e#I4,f n
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for(int i=0;i<nStartPos.length;i++) _]?Dt%MkD
{ G\,A> mT/P
if(!fileSplitterFetch.bDownOver) uz#eO|z@o
{ ;*37ta
breakWhile = false; q _T?G e
break;
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} tmY-m,U
} .1[2 CjQ
if(breakWhile) QE{;M
break; dPyBY]`
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//count++; S\{^LVXTMd
//if(count>4) ~d#;r5>
// siteStop(); Y+"hu2aPkY
} )o'U0rAx|a
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System.err.println("文件下载结束!"); %9-#`
} @cTZ`bg
catch(Exception e){e.printStackTrace ();} .^N#|hp^
} 8)q]^
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//获得文件长度 i6g[E4nk
public long getFileSize() 1A/c/iC
{ ncw?;
int nFileLength = -1; c^[1]'y
try{ (zTI)EV
URL url = new URL(siteInfoBean.getSSiteURL()); =
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 2cX"#."5p
httpConnection.setRequestProperty("User-Agent","NetFox"); yY@s(:
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int responseCode=httpConnection.getResponseCode(); $vbAcWj
if(responseCode>=400) B,m$ur#$
{ }2!5#/^~
processErrorCode(responseCode); 3EW f|6RI
return -2; //-2 represent access is error UN
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} TLL[F;uZ
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String sHeader; E_gDwWot
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for(int i=1;;i++) ]x(2}h^S
{
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); s*~jvL
//Utility.log(in.readLine()); :Z]+Z_9p
sHeader=httpConnection.getHeaderFieldKey(i); )zLS,/pk^
if(sHeader!=null) f w>Gx9
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if(sHeader.equals("Content-Length")) 5N3!!FFE
{ HfeflGme*
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ]R0A{+]n
break; t1{%FJ0F
} feq6!k7
} kx:lk+Tx
else Q"K >ML>0
break; A7,$y!D
} 2p;}wYt
} n.qxxzEN
catch(IOException e){e.printStackTrace ();}
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catch(Exception e){e.printStackTrace ();} /%q9hI
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Utility.log(nFileLength); >La L!PnZ
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return nFileLength; qL;T&h
} `=l{kBZT|
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//保存下载信息(文件指针位置) 'hi\98y
private void write_nPos() :iNAXy
{ r5qx! >
try{
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output = new DataOutputStream(new FileOutputStream(tmpFile)); $}nUK~$GSv
output.writeInt(nStartPos.length); 'St= izhd
for(int i=0;i<nStartPos.length;i++) =&b$W/l)0
{ -S3+
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// output.writeLong(nPos); 5NvyK[w]
output.writeLong(fileSplitterFetch.nStartPos); ${?ex nb$
output.writeLong(fileSplitterFetch.nEndPos); &'ETx"
} u+gXBU
output.close(); 6ewOZ,"j"4
} a&c#* 9t{
catch(IOException e){e.printStackTrace ();} 1 l*(8!_
catch(Exception e){e.printStackTrace ();} q{+poVX
} P$qkb|D,
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//读取保存的下载信息(文件指针位置) >/`cmNmb
private void read_nPos() bq&S?! =s
{ GuY5 %wr
try{ <w2NJ~M^
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 6.7Kp
int nCount = input.readInt(); -Tkd@
nStartPos = new long[nCount]; Y&