/* Lm#d.AD)
**SiteFileFetch.java 4V8wB}y7e
*/ pr(\?\a
package NetFox; taaAwTtk?A
import java.io.*; DU8LU*q'
import java.net.*; ':4pH#E
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public class SiteFileFetch extends Thread { 7+4"+CA
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SiteInfoBean siteInfoBean = null; //文件信息Bean |>GIPfVT
long[] nStartPos; //开始位置 ^#se4qQ
long[] nEndPos; //结束位置 -74T C
FileSplitterFetch[] fileSplitterFetch; //子线程对象 >/bK?yT<
long nFileLength; //文件长度 DjvgKy=Jr_
boolean bFirst = true; //是否第一次取文件 0EXNq*=EE
boolean bStop = false; //停止标志 y/eX(l<{
File tmpFile; //文件下载的临时信息 Un{ln*AR\
DataOutputStream output; //输出到文件的输出流 :j4
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) *!@x<Hf<
public SiteFileFetch(SiteInfoBean bean) throws IOException tC-KW~&
{ [HDO^6U
siteInfoBean = bean; %tQ{Hf~
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); >+8I =S
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); r0
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if(tmpFile.exists ()) A"iD4Q
{ Q@VnJ,
bFirst = false; a@ }r[0O
read_nPos(); >irT|VTf
} j],.`Y
else tta0sJ8i
{ ]
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nStartPos = new long[bean.getNSplitter()]; aZ`agsofk
nEndPos = new long[bean.getNSplitter()]; ;@~*z4U
} I]1Hi?A2
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} ?<^AXLiKV
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public void run() X.9MOdG70
{ de{YgN
//获得文件长度 tN> B$sv
//分割文件 ER1mA:8>E
//实例FileSplitterFetch Q.dy
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//启动FileSplitterFetch线程 =2)t1 H
//等待子线程返回 s/H"Ab
try{ WVK-dBU
if(bFirst) chzR4"WZFt
{ }h h^U^ia
nFileLength = getFileSize(); [=3tAPpzK
if(nFileLength == -1) rss.F3dK
{ 1t=X: ]0j
System.err.println("File Length is not known!"); aZGDtzNG5h
} ,GP4I3D
else if(nFileLength == -2) f<p4Pkv
{ _x1[$A,GuB
System.err.println("File is not access!"); Al=? j#J6p
} ,!u@:UBT
else )Hm[j)YI
{ X`QW(rq
for(int i=0;i<nStartPos.length;i++) NVWeJ+w
{ ~(OIo7#;
nStartPos = (long)(i*(nFileLength/nStartPos.length));
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} 05I39/T%
for(int i=0;i<nEndPos.length-1;i++) 2BA9T nxC
{ - :z5m+
nEndPos = nStartPos[i+1]; aW-o=l@;
} EFt`<qwj
nEndPos[nEndPos.length-1] = nFileLength; f<altz_\q
} r tmt 3
} k&iScMgCTH
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//启动子线程 kDl4t]j
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; "`*a)'.'^c
for(int i=0;i<nStartPos.length;i++) gLMea:
{ Rue|<d1
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ;s.5\YZ"k
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Q1\k`J
nStartPos,nEndPos,i); =C>`}%XT}
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); zQ %z"tQ
fileSplitterFetch.start(); U3+_'"
} VN-#R=D
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), aevG<|qP
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 05VOUa*pb
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", BI.k On=
nEndPos = " + nFileLength); Dke($Jr{
// fileSplitterFetch[nPos.length-1].start(); Yj7= T%5
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//等待子线程结束 {F+M&+``
//int count = 0; K0RYI69_
//是否结束while循环 Dq%r
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boolean breakWhile = false; Fxth>O`$
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while(!bStop) VIYksv
{ P[GX}~_k
write_nPos(); /\a]S:V-j
Utility.sleep(500); )cqDvH
breakWhile = true; OV("mNh
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for(int i=0;i<nStartPos.length;i++) *(&ClUQQ
{ .4C[D{4
if(!fileSplitterFetch.bDownOver) tGO[A#9a
{ ^A"lkV7
breakWhile = false; n &\'Hm
break; J6(
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} >6l ;/J
} ,rB9esxic
if(breakWhile) 8Z4?X%
break; P-OPv%jyi
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//count++; )y/DGSd
//if(count>4) f{^M.G@
// siteStop(); ?%xhe
} NBqV0>vR
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System.err.println("文件下载结束!"); q
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} <f.>jjwFE
catch(Exception e){e.printStackTrace ();} s\Pt,I@Y_
} !(]dz~sM
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//获得文件长度 XHZ:
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public long getFileSize() YD='M.n\
{ +r-dr>&H@
int nFileLength = -1; Rg?{?qK\K
try{ MB8SB
URL url = new URL(siteInfoBean.getSSiteURL()); #NN"(I
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); G V:$;
httpConnection.setRequestProperty("User-Agent","NetFox"); ~C"k$;(n
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int responseCode=httpConnection.getResponseCode(); u
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if(responseCode>=400) Y1fy2\<'
{ @k+%y'Y?
processErrorCode(responseCode); (3N"oE.b]
return -2; //-2 represent access is error .A*VLF*m
} ia^%Wg7
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String sHeader; ksu}+i,a
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for(int i=1;;i++) y^d[( c
{ KM/U?`6>:
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); .L^pMU+!^
//Utility.log(in.readLine()); bCA2ik
sHeader=httpConnection.getHeaderFieldKey(i); <g3du~
if(sHeader!=null) rQcRjh+E
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{ >d{dZD}
if(sHeader.equals("Content-Length")) 5e#&"sJ.1
{ \o:ELa HY
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ]{,Gf2v;;d
break; *^@#X-NG
} 5?5-;H
} wc7mJxJxA
else FJ{,=@
break; n^iNo
} z/Ns5
} >~5lYD
catch(IOException e){e.printStackTrace ();} QE45!Zg
catch(Exception e){e.printStackTrace ();} *2,e=tY>
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Utility.log(nFileLength); +}7Ea:K
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return nFileLength; [lNqT1%]
} Lj&1K~U
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//保存下载信息(文件指针位置) ]6t]m2~\
private void write_nPos() n+{HNr
{ ~K~b`|1
try{ L$+d.=]
output = new DataOutputStream(new FileOutputStream(tmpFile)); K\{b!Cfr^
output.writeInt(nStartPos.length); W\@?e32
for(int i=0;i<nStartPos.length;i++) 9Z,*h-o
{ {W5ydHXy
// output.writeLong(nPos); eg"=H50
output.writeLong(fileSplitterFetch.nStartPos); aho'|%y)
output.writeLong(fileSplitterFetch.nEndPos); bA@
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} H96BqNoO
output.close(); RzA2*]%a
} K*R)V/B/l
catch(IOException e){e.printStackTrace ();}
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catch(Exception e){e.printStackTrace ();} <w0NPrS]
} -{X<*P4p
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//读取保存的下载信息(文件指针位置) 4S,. R
private void read_nPos() nu&_gF,{
{ _0'm4?"
try{ b8J@K"
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); uY^v"cw/F
int nCount = input.readInt(); _:35d1[
nStartPos = new long[nCount]; g.64Id
nEndPos = new long[nCount]; 1. #
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for(int i=0;i<nStartPos.length;i++) "?apgx 6
{ ]\CU9J|H8
nStartPos = input.readLong(); :s'o~
nEndPos = input.readLong(); -O|&