/* 5XtIVHA@{
**SiteFileFetch.java o_ng{SL
*/ ISa}Km>Q
package NetFox; Sq22]
import java.io.*; pY.R?\
import java.net.*; [~_)]"pU
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public class SiteFileFetch extends Thread { u-</G-y
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SiteInfoBean siteInfoBean = null; //文件信息Bean =1#obB
long[] nStartPos; //开始位置 T8^`<gr.
long[] nEndPos; //结束位置
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 -A]-o
long nFileLength; //文件长度 J(>T&G;
boolean bFirst = true; //是否第一次取文件 ~aBf.
boolean bStop = false; //停止标志 ) KvGJo)("
File tmpFile; //文件下载的临时信息 fM/~k>wl
DataOutputStream output; //输出到文件的输出流 !#y_vz9
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) !(gMr1}w
public SiteFileFetch(SiteInfoBean bean) throws IOException &c[ISc>N{
{ >;Ag7Ex
siteInfoBean = bean; Z1}@N/>>
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 1VKu3
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); {"PIS&]tR
if(tmpFile.exists ()) l4bLN
{ 6L<Y
bFirst = false; [_HY6gr
read_nPos(); '[Zgwz;z
} *Z8qd{.$q
else J5!-<oJ/
{ sEymwpm9
nStartPos = new long[bean.getNSplitter()]; Nn#;Kjul.
nEndPos = new long[bean.getNSplitter()]; KPjC<9sby
} 4^Ke?;v
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} BaVooN~C
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public void run() ~2;\)/E\
{ @?JFqwq!
//获得文件长度 QXu[<V
//分割文件
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//实例FileSplitterFetch Skg}/Ek
//启动FileSplitterFetch线程 2kcDJ{(
//等待子线程返回 <2af&-EGs
try{ d`UK mj
if(bFirst) dY{qdQQ}
{ p`2Q6
nFileLength = getFileSize(); ]JR2Av
if(nFileLength == -1) 5?Ukf$)x
{ _lDNYpv
System.err.println("File Length is not known!"); p\P)
} $0gGRCCG;
else if(nFileLength == -2) T65"?=<EB
{ )(9[> _+40
System.err.println("File is not access!"); <naxpflom0
} Cg(&WJw(ep
else LGK&&srJs
{ V.%LA.8
for(int i=0;i<nStartPos.length;i++) K$l@0r ~k
{ iR"6VO
nStartPos = (long)(i*(nFileLength/nStartPos.length)); h1H$3TpP
} F`La_]f?b\
for(int i=0;i<nEndPos.length-1;i++) $V !25jQ
{ {FX]1:
nEndPos = nStartPos[i+1]; }eF
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} S5kD|kJ
nEndPos[nEndPos.length-1] = nFileLength; 0NK|3]p
} ~{GTL_w
} h=qT@)h1>
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//启动子线程 =W&m{F96
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; S['cX ~
for(int i=0;i<nStartPos.length;i++) } '?qUy3x
{ :T|9;2
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 6$0<&')Yb
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 5dhy80|g]
nStartPos,nEndPos,i); 6#AEVRJKU@
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _Hd|y
fileSplitterFetch.start();
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} N:CQ$7T{ j
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), lSBR(a<\y
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); [Y~~C J
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", V1,/qd_
nEndPos = " + nFileLength); '9=b@SaAj
// fileSplitterFetch[nPos.length-1].start(); m)LI|
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//等待子线程结束 BU4IN$d0Po
//int count = 0; wdAKU+tM
//是否结束while循环 Te[v+jgLY,
boolean breakWhile = false; VdGVEDwz
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while(!bStop) a5R.
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{ 8sU5MQ5
write_nPos(); wP*3Hx;S
Utility.sleep(500); C
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breakWhile = true; 7y&6q`y E
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for(int i=0;i<nStartPos.length;i++) N$=9R
{ Y<u%J#'[
if(!fileSplitterFetch.bDownOver) !tt 8-Y)i
{ }^0'IAXi
breakWhile = false; .d}yQ#5z
break; BC/5 bA
} UWEegFq*
} rAAx]nQ@
if(breakWhile)
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break; z@,(^~C_
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//count++; $ZGup"z)
//if(count>4) 5I,NvHD4
// siteStop(); U3z23LgA
}
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System.err.println("文件下载结束!"); C3Q #[
} Jz>P[LcB
catch(Exception e){e.printStackTrace ();} R;pW,]}g,
} t6\H
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//获得文件长度 F<4:P=
public long getFileSize() |9%~z0
{
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int nFileLength = -1; y705
try{ Y @'do)
URL url = new URL(siteInfoBean.getSSiteURL()); u-|%K.A
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); \t1#5
httpConnection.setRequestProperty("User-Agent","NetFox"); x%r$/=
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int responseCode=httpConnection.getResponseCode(); w-ald?`
if(responseCode>=400) 5hy7}*dR
{ T@.+bD
processErrorCode(responseCode); BHAFO E
return -2; //-2 represent access is error 8tR6.09'
} y>0 @.
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String sHeader; -e(<Jd_=
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for(int i=1;;i++) 9)]`le
{ d*Su
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); q6$6:L,<
//Utility.log(in.readLine()); S+[,\>pY
sHeader=httpConnection.getHeaderFieldKey(i); }NwmZw>_
if(sHeader!=null) 5JVBDA^#om
{ ,&4
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if(sHeader.equals("Content-Length")) w^&UMX}
{ qXq#A&
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); yC5>k;/6#K
break; uKXU.u*C
} *vRHF1)L
} nRqP_*]
else rwUhNth-Qh
break; 85io%>&0
} KYB3n85 1
}
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catch(IOException e){e.printStackTrace ();} ^Ff fc@=
catch(Exception e){e.printStackTrace ();} XS@iu,uO
}])j>E
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Utility.log(nFileLength); l2Py2ZI-b
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return nFileLength; '!Va9m*w7
} Q_,!(N
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//保存下载信息(文件指针位置) p +JOUW
private void write_nPos() ~8k`~t!
{ md{1Jn"
try{ 7]L}~
output = new DataOutputStream(new FileOutputStream(tmpFile)); u];\v%b
output.writeInt(nStartPos.length); C|FI4/-e
for(int i=0;i<nStartPos.length;i++) j/uMSE
{ U/U_q-z]
// output.writeLong(nPos); [C
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output.writeLong(fileSplitterFetch.nStartPos); _%rkN0-(a
output.writeLong(fileSplitterFetch.nEndPos); r7U[QTM%
} js)E:+{A,
output.close(); UeBSt.
} 0\ j)!b
catch(IOException e){e.printStackTrace ();} :5^5l
catch(Exception e){e.printStackTrace ();} p'/%"
} {2g?+8L$Z
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//读取保存的下载信息(文件指针位置) uX7"u*@Q*~
private void read_nPos() "el3mloR8
{ ABtv|0K
try{ uZ1G,9
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); <3k9 y^0
int nCount = input.readInt(); i}:^<jDv?
nStartPos = new long[nCount]; bb/A}<
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nEndPos = new long[nCount]; J(,gLl
for(int i=0;i<nStartPos.length;i++) S^e e<%-
{ G8W^XD
nStartPos = input.readLong(); ,tFLx#e#
nEndPos = input.readLong(); 4NFvX4
} F+Hmp\rM#
input.close(); J72kjj&C
} U3>ES"N
catch(IOException e){e.printStackTrace ();} ''EFh&F
catch(Exception e){e.printStackTrace ();} |2X+( F Ed
} =WFG[~8
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private void processErrorCode(int nErrorCode)
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{ *zPz)3;
System.err.println("Error Code : " + nErrorCode); ?
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} @F5QgO J&r
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//停止文件下载 _H2%6t/V
public void siteStop() CM%;r5
{ &