/* =OTm2:j#yQ
**SiteFileFetch.java xPmN},i'R$
*/ 3Rl,GWK
package NetFox; F.q|x|9j
import java.io.*; t~K%.|'0
import java.net.*; #~?kYCtC)
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public class SiteFileFetch extends Thread { m4ApHM2
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SiteInfoBean siteInfoBean = null; //文件信息Bean 9w;?-
long[] nStartPos; //开始位置 5b#QYu
long[] nEndPos; //结束位置 s[3fqdLP&
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ,[48Mspp
long nFileLength; //文件长度 H!IDV}dn
boolean bFirst = true; //是否第一次取文件 i4Z4xTn
boolean bStop = false; //停止标志 >tRHNB_
File tmpFile; //文件下载的临时信息 L x|',6S
DataOutputStream output; //输出到文件的输出流 d-!<C7O}
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ^!:"Q3
public SiteFileFetch(SiteInfoBean bean) throws IOException MWWu@SY
{ h:qHR]
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siteInfoBean = bean; Edt}",s7
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); $v;dV@tB
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); P-z`c\Rt
if(tmpFile.exists ()) !FG%2L4?,5
{ yOHXY&
bFirst = false; K <`>O,
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read_nPos(); e (\I_
} 'Am- vhpm
else ;q#]-^
{ fu\s`W6f&
nStartPos = new long[bean.getNSplitter()]; ^nDal':*
nEndPos = new long[bean.getNSplitter()]; 6`nR5 fh
} gp< =Gmd
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} }VRvsZ
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public void run() Z>A{i?#m
{ g@nk.aRw
//获得文件长度 3(lVmfk
//分割文件 W"(u^}
//实例FileSplitterFetch 66ohmP@04Z
//启动FileSplitterFetch线程 ^7XAw:
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//等待子线程返回 V7<eQ0;m
try{ Px4/O~bLk
if(bFirst)
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{ z-u?s`k**
nFileLength = getFileSize(); *{/@uO
if(nFileLength == -1) F&@ |M(
{ ]rX9MA6
System.err.println("File Length is not known!"); yqcM(,0]
} tEhr
else if(nFileLength == -2) lH1g[ ))
{ ()|3
System.err.println("File is not access!"); Enj_tJs
} LM,fwAX
else ! *a[jhx
{ f]_mzF=&
for(int i=0;i<nStartPos.length;i++) w7Dt1axB
{ F1u)i
nStartPos = (long)(i*(nFileLength/nStartPos.length)); $p6N|p
} Gt^d;7x]
for(int i=0;i<nEndPos.length-1;i++) y lL8+7W
{ o bGWxI%a
nEndPos = nStartPos[i+1]; L$JI43HZ
} .9 kyrlm
nEndPos[nEndPos.length-1] = nFileLength; Ph)|j&]
} QrS$P09=\
} #8?^C]*{0
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//启动子线程 :EB,{|m
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; dB)[O9K)
for(int i=0;i<nStartPos.length;i++) %,? vyY
{ `jW4H$D
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), do'ORcZ
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), !C`20,U
nStartPos,nEndPos,i); +i)AS0?d
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); $%He$t
fileSplitterFetch.start(); YBylyVZ
} ^
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), (+MC<J/i
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); M_&4]\PkCy
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", VD;j[~/Z
nEndPos = " + nFileLength); #]zhZW4
// fileSplitterFetch[nPos.length-1].start(); W8*
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//等待子线程结束 W78o*z[O
//int count = 0; wgZrrq/W|
//是否结束while循环 $^$ECDOTB
boolean breakWhile = false; HDj$"pS
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while(!bStop) #WEq-0L
{ kIM
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write_nPos(); 9.-47|-9C
Utility.sleep(500); ak2dn]]D
breakWhile = true; d
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for(int i=0;i<nStartPos.length;i++) X%`KYo%
{ Xu%d,T$G
if(!fileSplitterFetch.bDownOver) t?.\|2
{ u\5g3BH
breakWhile = false; d$Em\*C
break; B(Y.`L? %E
} 0BXs&i-TP5
} 'z](xG<
if(breakWhile) DPeVKyjU
break; msG3~@q
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//count++; V/&o]b
//if(count>4) 8r^j P.V
// siteStop(); r#I>_Utsy
} u\w 2S4c
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System.err.println("文件下载结束!"); _#(s2.h~J
} Y eO-gY[b
catch(Exception e){e.printStackTrace ();} j@SYXKL~
} 4tnjXP8
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//获得文件长度 id4]|jb
public long getFileSize() oVEAlBm^v
{ xXPUrv5zO
int nFileLength = -1; "cQvd(kug
try{ xH@'H?
URL url = new URL(siteInfoBean.getSSiteURL()); tx)OJY
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); #{~7G%GPY5
httpConnection.setRequestProperty("User-Agent","NetFox"); MC6)=0:KX
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int responseCode=httpConnection.getResponseCode(); j88=f#<
if(responseCode>=400) 3B -NYJa
{ 8E
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processErrorCode(responseCode); ?"u'#f_
return -2; //-2 represent access is error R(GmU4
} O&= KlnI:
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String sHeader; .xo_}Vw
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for(int i=1;;i++) c-`37. J
{ r8F{A6i N
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); h-,?a_
//Utility.log(in.readLine()); *@~`d*d
sHeader=httpConnection.getHeaderFieldKey(i); Seg#s.
if(sHeader!=null) k!9=
{
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if(sHeader.equals("Content-Length")) i.F8
{ ]qMH=>pOsj
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); )*Vj3Jx
break; Tfr`?:yF
} \d ui`F"Cc
} unJiE!
else |[DV\23{G
break; wn{]#n=|l
} (<
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} |;~nI'0O])
catch(IOException e){e.printStackTrace ();} rI *!"PL
catch(Exception e){e.printStackTrace ();} 5'62ulwMP=
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Utility.log(nFileLength); Fdr*xHx$P
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return nFileLength; TG4^_nRl
} i'Wcf1I-=
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//保存下载信息(文件指针位置) 98h :X %
private void write_nPos() R/Tj^lM
{ cB_pyX9Z
try{ :wSJ-\'$
output = new DataOutputStream(new FileOutputStream(tmpFile)); x<Iy<v7-
output.writeInt(nStartPos.length); uvR0TIF4
for(int i=0;i<nStartPos.length;i++) gj[zka0_
{ F:M/z#:~
// output.writeLong(nPos); n$IWoIdbGN
output.writeLong(fileSplitterFetch.nStartPos); -*r [
output.writeLong(fileSplitterFetch.nEndPos); HE@-uh
} $]nVr(OZ_
output.close(); >eEnQ}Y
} kHGeCJe\{
catch(IOException e){e.printStackTrace ();} 3>H2xh 3Y
catch(Exception e){e.printStackTrace ();} Tw}@+-
} j/~VP2R`
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//读取保存的下载信息(文件指针位置) 9)jo7,VM
private void read_nPos() @>+^W&
{ ,n^TN{#
try{ YfV"_G.ad|
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); =jsx(3V
int nCount = input.readInt(); sE^ns\&QP=
nStartPos = new long[nCount]; =.VepX|?D
nEndPos = new long[nCount]; E1^aAlVSD
for(int i=0;i<nStartPos.length;i++) (_s;aK
{ o*?[_{xW
nStartPos = input.readLong(); }Q,(u
nEndPos = input.readLong(); P_kaIPP
} -hQ96S8
input.close(); &qNP?>C!=
} IES41y<
catch(IOException e){e.printStackTrace ();} 8y-e+
catch(Exception e){e.printStackTrace ();} *iPs4Es-
} ,:c:6Y^
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private void processErrorCode(int nErrorCode) UIO6|*ka
{ ^xzE^"G6
System.err.println("Error Code : " + nErrorCode); aIQrb
} H<v c\r
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//停止文件下载 5JO[+>
public void siteStop() xWd9%,mDNR
{ }*xC:A%aS
bStop = true; C<zx'lw!
for(int i=0;i<nStartPos.length;i++) s'R~r
fileSplitterFetch.splitterStop(); bMSD/L
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} ac2}3$u
} N;e;4,_ n
//负责部分文件的抓取 rdORNlK&
**FileSplitterFetch.java s4MNVT
*/ 'hxs((['\
package NetFox; (3)C_Z
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import java.io.*; HR/k{"8W4Q
import java.net.*; L#@l(8.
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public class FileSplitterFetch extends Thread { L-^# 02
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String sURL; //File URL Yt\E/*%
long nStartPos; //File Snippet Start Position dL1~]Z
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long nEndPos; //File Snippet End Position _Ym&UY.u#
int nThreadID; //Thread's ID *O"%tp6
boolean bDownOver = false; //Downing is over !X \Sp}
boolean bStop = false; //Stop identical c@0l-R{q
FileAccessI fileAccessI = null; //File Access interface ek Y?
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException $#6Fnhh}
{ /ig^7+#
this.sURL = sURL; @t{{Q1
this.nStartPos = nStart; yVbg,q'?
this.nEndPos = nEnd; @ef//G+Z"
nThreadID = id; |NphG|
fileAccessI = new FileAccessI(sName,nStartPos);//定位 T{5M1r
} 31
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