/* CfFNk "0{
**SiteFileFetch.java iRwqt-WZ
*/ U4hsbraz
package NetFox; XO |U4#ya
import java.io.*; E&G_7->
import java.net.*; 5x/q\p-{/
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public class SiteFileFetch extends Thread { mtEE,O!+
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SiteInfoBean siteInfoBean = null; //文件信息Bean Y4PU~l
long[] nStartPos; //开始位置 5S:&^ A<
long[] nEndPos; //结束位置 .MO"8}]8Z
FileSplitterFetch[] fileSplitterFetch; //子线程对象 @Bfwb?&
long nFileLength; //文件长度 }<Y3jQnl
boolean bFirst = true; //是否第一次取文件 AuZ?~I1
boolean bStop = false; //停止标志 G6X
File tmpFile; //文件下载的临时信息 m9^?p
DataOutputStream output; //输出到文件的输出流
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) E.Hw|y0_(|
public SiteFileFetch(SiteInfoBean bean) throws IOException Q}!U4!{i|p
{ -Kt36:|
siteInfoBean = bean; _tE$a3`
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath()));
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tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Q$iGpTL
if(tmpFile.exists ()) ku,Y-
{ o5+N_5OE}E
bFirst = false; i,/|H]Mzr
read_nPos(); KZV$rJ%G
} cm]D"GFLY
else l7 D/]&
{ ?9q{b\=l
nStartPos = new long[bean.getNSplitter()]; z41
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nEndPos = new long[bean.getNSplitter()]; gM|X":j
} SJVqfi3A
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public void run() BY:
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{ whP>'9t.w
//获得文件长度 (E)/' sEb
//分割文件 Xmy(pV!PF
//实例FileSplitterFetch ]4@z.1Mr
//启动FileSplitterFetch线程 Dbr(Wg
//等待子线程返回 st36xS
try{ /IVw}:G
if(bFirst) fw^mjD
{ j#%*@]>Tg
nFileLength = getFileSize(); g#=^U`y
if(nFileLength == -1) R{.wAH(
{ Ki-CJy
System.err.println("File Length is not known!"); z$p+l]
} =Feavyx
else if(nFileLength == -2) 6X5m1+ Oi^
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System.err.println("File is not access!"); PpN+q:(
} WT(R =bLw
else ox {Cm
{ O*oL(dk*8L
for(int i=0;i<nStartPos.length;i++)
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{ 9!V<=0b/
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ]\P
} ?"AcK"v
for(int i=0;i<nEndPos.length-1;i++) ,%dn)gt7
{ ;BoeE3*
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nEndPos = nStartPos[i+1]; e,I-u'mLQs
} M:?eK
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nEndPos[nEndPos.length-1] = nFileLength; M 0->
} |6\ ?"#
} _}Jz_RS2`
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//启动子线程 Y_PCL9G{p
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 9>le-}~
for(int i=0;i<nStartPos.length;i++) )+w0NhJw
{ A'|W0|R9
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :KX/GN!n
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), I?-9%4 8iM
nStartPos,nEndPos,i); Ltcr]T(Ic
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); C bG"8F|4
fileSplitterFetch.start(); [.z1
} #f/-i u=L
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), SVXey?A;CJ
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); x#dJH9NR[
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", @R}L
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nEndPos = " + nFileLength); $K<jmEC@<
// fileSplitterFetch[nPos.length-1].start(); $yaE!.Kc
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//等待子线程结束 T:cSv
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//int count = 0; 9L:v$4{LU
//是否结束while循环 ;?inf`t
boolean breakWhile = false; |c 8p{)
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while(!bStop) BY,%+>bc)
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write_nPos(); !^q<)!9<EO
Utility.sleep(500); mMT7`r;l
breakWhile = true; -lSm:O@'
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for(int i=0;i<nStartPos.length;i++) =]W{u`
{ 5bmtUIj
if(!fileSplitterFetch.bDownOver) )IZ$R*Y{
{ @ n;WVG
breakWhile = false; ~n"V0!:'4
break; a3Es7R+S
} 0]>p|m9K^<
} V^L;Nw5h
if(breakWhile) HdWghxz?)
break; LZ&CGV"Z-
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//count++; D zDt:.JZ
//if(count>4) y
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// siteStop(); [zf9UUc~
} f.+e
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System.err.println("文件下载结束!"); 9M01}
} X[;4.imE
catch(Exception e){e.printStackTrace ();} 2b|vb}|t{
} ,b{G(sF
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//获得文件长度 zi*D8!_C
public long getFileSize() e4CG=K3s
{ L4kYF~G:4
int nFileLength = -1; r="X\ [on
try{ 5+3Z?|b
URL url = new URL(siteInfoBean.getSSiteURL()); 9@D,ZSi
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); RFA5vCG
httpConnection.setRequestProperty("User-Agent","NetFox"); k_}ICKzw1
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int responseCode=httpConnection.getResponseCode(); J_P2% b=C
if(responseCode>=400) 4TR:bQZs
{ XTW/3pB
processErrorCode(responseCode); y'pG'"U]_
return -2; //-2 represent access is error bJ. ((1$
} R4V>_\D/
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String sHeader; TS3 00F
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for(int i=1;;i++) :syR4A WM
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); QT%&vq
//Utility.log(in.readLine()); IHagRldG
sHeader=httpConnection.getHeaderFieldKey(i); W=)}=^N0
if(sHeader!=null) )SDGj;j+
{ tO~H/0
if(sHeader.equals("Content-Length")) [BV{=;iD
{ SxT:k,ji
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); g>f(5
break; ;utjW1y
} aUA+%
} dd4yS}yBlR
else G0*$&G0nb
break; ,sLV6DM
} VJr?`
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} SH}O?d\Q:
catch(IOException e){e.printStackTrace ();} Uc9Uj
catch(Exception e){e.printStackTrace ();} f4w|
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Utility.log(nFileLength); NU
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return nFileLength; 3rR(>}:[V
} 2,_BO6
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//保存下载信息(文件指针位置) VJ1`&
private void write_nPos() u8[X\f
{ 9Xm"kVqd/
try{ |`O7>(h
output = new DataOutputStream(new FileOutputStream(tmpFile)); F`?pZ
output.writeInt(nStartPos.length); V@Po}
for(int i=0;i<nStartPos.length;i++) N$=<6eQm
{ fYCAwS{
// output.writeLong(nPos); Z)?"pBv'
output.writeLong(fileSplitterFetch.nStartPos); AMO{?:8Y;
output.writeLong(fileSplitterFetch.nEndPos); pCg0xbc`
} zSq+#O1#
output.close(); j
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} 14^t{
catch(IOException e){e.printStackTrace ();} o^AK@\e:^Z
catch(Exception e){e.printStackTrace ();} ul% q6=f)
} TkQ05'Qc
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//读取保存的下载信息(文件指针位置) m*I5 \
private void read_nPos() a{u)~:/G
{ w93yhV?
try{ ].1R~7b
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ^|gN?:fA}
int nCount = input.readInt(); 4s$))x9p
nStartPos = new long[nCount]; da2BQ;
nEndPos = new long[nCount]; 52%.^/
for(int i=0;i<nStartPos.length;i++) wPG3Ap8L
{ I.(
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nStartPos = input.readLong(); "+HZ~:~f
nEndPos = input.readLong(); 4z$eT
} 7tt&/k?Q
input.close(); #D}NT*w/
} rP>5OLP
catch(IOException e){e.printStackTrace ();} ^Nc\D7( l
catch(Exception e){e.printStackTrace ();} xwz2N5
} &t6L8[#yd
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private void processErrorCode(int nErrorCode) WRo#ZVt9$
{ ]*v%(IGK
System.err.println("Error Code : " + nErrorCode); l5@k8tnz
} q=6M3OnS>
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//停止文件下载 ;>YJ}:r"\
public void siteStop() gWJLWL2
{ 9vVYZ}HC
bStop = true; z1YC%Y|R
for(int i=0;i<nStartPos.length;i++) 8cW]jm
fileSplitterFetch.splitterStop(); k-w._E
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} K@?S0KMK
} ]C'r4Ch^
//负责部分文件的抓取 .-<o[(s
**FileSplitterFetch.java #%E~IA%
*/ ~>qcV=F^d,
package NetFox; ^srx/6X
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import java.io.*; xOEj+%M
import java.net.*; tF=96u_X
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public class FileSplitterFetch extends Thread { 'jfI1 ]q
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String sURL; //File URL JZai{0se
long nStartPos; //File Snippet Start Position '5{gWV`
long nEndPos; //File Snippet End Position m@TU2
int nThreadID; //Thread's ID eLl;M4d
boolean bDownOver = false; //Downing is over jg 2>=}
boolean bStop = false; //Stop identical 8vchLl#
FileAccessI fileAccessI = null; //File Access interface g.z/%LpK
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException sdrE4-zd
{ QhN5t/Hr
this.sURL = sURL; Knn$<!>
this.nStartPos = nStart; M<