/* |$+3a
**SiteFileFetch.java zqd@EF6/bz
*/ LO'**}vm
package NetFox; -Q2, "
import java.io.*; Bm.afsM;
import java.net.*; F^l[GdUosK
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public class SiteFileFetch extends Thread { sJ\BF
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SiteInfoBean siteInfoBean = null; //文件信息Bean #w;v0&p
long[] nStartPos; //开始位置 Pl(Q,e7O]
long[] nEndPos; //结束位置 FRcy`)
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Twh!X*uQ
long nFileLength; //文件长度 @)IjNplYkw
boolean bFirst = true; //是否第一次取文件 r}Ohkr
boolean bStop = false; //停止标志 J%8(kWQ|
File tmpFile; //文件下载的临时信息 Us%T;gW
DataOutputStream output; //输出到文件的输出流 o-;E>N7t
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) M\C"5%2Mu
public SiteFileFetch(SiteInfoBean bean) throws IOException +_s #2
{ .R`5Qds*l
siteInfoBean = bean; )js)2L~
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); #XK2Ien)Z
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); M-\Y"]sW
if(tmpFile.exists ()) nv ca."5 y
{ ;g8R4!J
bFirst = false; so^lb?g
read_nPos(); >82@Q^O
} YgKZ#?*
else YX%[ipgB
{ H/,gro
nStartPos = new long[bean.getNSplitter()]; z|fmrwkN'$
nEndPos = new long[bean.getNSplitter()]; })uGRvz
} 9s_vL9u
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} g$n7CXoT
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public void run() %?LOs
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//获得文件长度 @*>@AFnf\Z
//分割文件 )@N2
//实例FileSplitterFetch UYFwS/ RW}
//启动FileSplitterFetch线程 [N1hWcfvd
//等待子线程返回 )_a~}
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try{ b`L%t:u{d
if(bFirst) Cv
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nFileLength = getFileSize(); o5xAav"+>
if(nFileLength == -1) `))\}C@k
{ @95FN)TXZY
System.err.println("File Length is not known!"); a-y+@#;2_
} 33jovK2
else if(nFileLength == -2) Hip&8NW
{ L93l0eEt
System.err.println("File is not access!"); BLN^ <X/
} ilK-?@u+
else zs%Hb48V
{ vesJEaw7
for(int i=0;i<nStartPos.length;i++) &-s'BT[PGq
{ ?P4w]a
nStartPos = (long)(i*(nFileLength/nStartPos.length)); Pa(^}n|
} .tkT<o-u<J
for(int i=0;i<nEndPos.length-1;i++)
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{ MzPzqm<
nEndPos = nStartPos[i+1]; hbU+Usx
} -yR.<KnL
nEndPos[nEndPos.length-1] = nFileLength; y'FS/=u>0
} [qdRUV'
} ~jK{ ,$:=
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//启动子线程 x? ?pBhJH
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ]DZE%
for(int i=0;i<nStartPos.length;i++) ~UyV<
{ ktK_e
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ~CtL9m3tO
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), <$6QDfa#
nStartPos,nEndPos,i); p7);uF^O%
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ~CVe yk< (
fileSplitterFetch.start(); nM\eDNK
} Ys
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,\X@~j
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); >a"Z\\dF
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", GQ*wc?f3
nEndPos = " + nFileLength); A;5n:Sd
// fileSplitterFetch[nPos.length-1].start(); ,B08i
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//等待子线程结束 76>7=#m0u'
//int count = 0; [v$0[IuY,
//是否结束while循环 #BJG9DFP4`
boolean breakWhile = false; p>vn7;s2#
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while(!bStop) Qhs/E`k4
{ 'D6T8B4
write_nPos(); ]V-W~r=
Utility.sleep(500); ^F2b
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breakWhile = true; 3k|oK'l
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for(int i=0;i<nStartPos.length;i++) kxp);
{ Z-8Yd6 4
if(!fileSplitterFetch.bDownOver) ?9 ! Z<H
{ \
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breakWhile = false; rm4.aO~-F
break; vy_D>tp
} '7D,m
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} ^M%uV
if(breakWhile) %@;6^=
break; d}LR l" _n
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//count++; Na$Is'F&p
//if(count>4) uum;q-"
// siteStop(); F.-R r
} lE!a
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System.err.println("文件下载结束!"); zrR`ecC(b
} w^L ta
catch(Exception e){e.printStackTrace ();} gzBy?r> r
} uHH/rMV
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//获得文件长度 xY+VyOUs
public long getFileSize() XW -2~?$
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int nFileLength = -1; zUkN 0
try{ JoRT&rkd
URL url = new URL(siteInfoBean.getSSiteURL()); 1BAgtd$3
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); P~s$EJL*
httpConnection.setRequestProperty("User-Agent","NetFox"); D'L'#/hK
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int responseCode=httpConnection.getResponseCode(); 6'kS_Zu{<
if(responseCode>=400) Dfps
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{ 89n:)|rWq
processErrorCode(responseCode); 6(]tYcC
return -2; //-2 represent access is error 4|mD*o
} N;A@'
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String sHeader; N=5)fe%{4
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for(int i=1;;i++) QCH}-q)
{ `(1K
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); fLSXPvm
//Utility.log(in.readLine()); ,*&G1|_6
sHeader=httpConnection.getHeaderFieldKey(i); R+nMy=I%8
if(sHeader!=null) fwrJ!j
{ "t({D
if(sHeader.equals("Content-Length")) 5DXR8mLoaJ
{ )I^2k4Cg"
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Nc:({@I
break; ({-GOw46
} !
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} %V1Z~HC
else yz-,)GB6
break; b
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} 4Sm]>%F':
} %r-V2)
catch(IOException e){e.printStackTrace ();} Yk'9U-.mc
catch(Exception e){e.printStackTrace ();} PzV@umC1#f
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Utility.log(nFileLength); DHw&+MY
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return nFileLength; FuUD 61JHY
} S#-wl2z
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//保存下载信息(文件指针位置)
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private void write_nPos() S@}1t4Ls:
{ "]m+z)lWd
try{ EyI}{6~F
output = new DataOutputStream(new FileOutputStream(tmpFile)); kaxvPv1
output.writeInt(nStartPos.length); ?;wpd';c
for(int i=0;i<nStartPos.length;i++) bae\Zk%`^
{ }<>~sy
// output.writeLong(nPos);
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output.writeLong(fileSplitterFetch.nStartPos); "+z?x~rk
output.writeLong(fileSplitterFetch.nEndPos); K]qM~v<A
} R64!>o"nED
output.close(); T;diNfgg
} N7b1.]<
catch(IOException e){e.printStackTrace ();} OdQT2PA_
catch(Exception e){e.printStackTrace ();} Qd_Y\PzS
} .MVY B\6Q0
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//读取保存的下载信息(文件指针位置) KJ?y@Q
private void read_nPos() +B'8|5tPX
{ Z<#hS=eY
try{ 4<lQwV6=
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); W(25TbQ
int nCount = input.readInt(); 65oWD-
nStartPos = new long[nCount]; zOHypazOTq
nEndPos = new long[nCount]; v}sY|p"
for(int i=0;i<nStartPos.length;i++)
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{ p1D[YeF4
nStartPos = input.readLong(); K.%U
nEndPos = input.readLong(); '`|AI:L
} FVB;\'/
input.close(); fQ'.8'>T
} 0l=+$&D
catch(IOException e){e.printStackTrace ();} P_gYz!
catch(Exception e){e.printStackTrace ();} ?!=iu!J
} }C
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private void processErrorCode(int nErrorCode) ZkP{[^6d\
{ >#}2J[2HQ
System.err.println("Error Code : " + nErrorCode); dl5=q\1=
} ygSL
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//停止文件下载 7l."b$U4yv
public void siteStop() !ph" mf$-
{ (>=7ng^
bStop = true; 2/36dGFH
for(int i=0;i<nStartPos.length;i++) 0Rz(|jlbS
fileSplitterFetch.splitterStop(); RGIoI]_
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} G~wF nl%
} 3Wcy)y>2Ap
//负责部分文件的抓取 8ZcU[8r
**FileSplitterFetch.java J9%@VZut
*/ <&pKc6+{
package NetFox; &[a Tw{2
D-IR!js ]
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import java.io.*; o5Y2vmz?9
import java.net.*; F52B~@.
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public class FileSplitterFetch extends Thread { xMs]Hs
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String sURL; //File URL 9B dt (}0A
long nStartPos; //File Snippet Start Position E2AW7f(/
long nEndPos; //File Snippet End Position Nt:8ogk/
int nThreadID; //Thread's ID kax\h
boolean bDownOver = false; //Downing is over W3&tJ8*3
boolean bStop = false; //Stop identical 'PlaM Oy
FileAccessI fileAccessI = null; //File Access interface 4'Xgk8)
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException I,ci >/+b
{ _2hXa!yO
this.sURL = sURL; k$Rnj`*^
this.nStartPos = nStart; y69J%/c
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this.nEndPos = nEnd; P20|RvE
nThreadID = id; k_GP>b\"k
fileAccessI = new FileAccessI(sName,nStartPos);//定位 p|XAlia
} 8I+d)(:
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public void run() va|rO#.=
{ {13!vS%5
while(nStartPos < nEndPos && !bStop) M R'o{?{e`
{ n&-496H
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try{ 7ODaX.t->
URL url = new URL(sURL); -DO&