/* Ahd\TH
**SiteFileFetch.java q1<Fg.-r
*/ o>$|SU!a
package NetFox; 8q{1E];:q
import java.io.*; -Cml0}.O
import java.net.*; V[To,f
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public class SiteFileFetch extends Thread { ax;{MfsK
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SiteInfoBean siteInfoBean = null; //文件信息Bean &KOO&,
long[] nStartPos; //开始位置 `L+~&M
long[] nEndPos; //结束位置 y 2cL2c$BT
FileSplitterFetch[] fileSplitterFetch; //子线程对象 xan/ay>
long nFileLength; //文件长度 1wU=WE(kKZ
boolean bFirst = true; //是否第一次取文件 Q;Q
boolean bStop = false; //停止标志 3[iSF5%V*p
File tmpFile; //文件下载的临时信息 ^,~N7`
DataOutputStream output; //输出到文件的输出流 `6n!$Cxo
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) <XY;fhnB
public SiteFileFetch(SiteInfoBean bean) throws IOException % Mw' e/?
{ T&mbXMN
siteInfoBean = bean; +i_'gDy$
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); T^+1rG
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); q!9^#c
if(tmpFile.exists ()) h<Jc;ht
{ tu7+LwF7
bFirst = false; = ]WW'~
read_nPos(); @-}D7?
} QR|XV%$
else A4}JZi6@
{ p"g1V7B
nStartPos = new long[bean.getNSplitter()]; CL
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nEndPos = new long[bean.getNSplitter()]; )#)nBM2\
} JgxE|#*7U
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} Zm`'MsgFr
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public void run() 9*7Hoi4Ji
{ j{-mQTSD
//获得文件长度 **Qe`}E:
//分割文件 wBg<Q{J
//实例FileSplitterFetch Xs{:[vRW
//启动FileSplitterFetch线程 =W;t@"6>2
//等待子线程返回 m]{<Ux
try{ )RpqZe/h4
if(bFirst) oqm
{ v@F|O8t:s
nFileLength = getFileSize(); E_ o{c5N
if(nFileLength == -1) Jsl k
{ Qx9>,e6+
System.err.println("File Length is not known!"); E`A<]dAoK
} L"Qh_+
else if(nFileLength == -2) i5ajM,i/K
{ P@^z:RS*{
System.err.println("File is not access!"); ~uP
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} ~ >&I^4
else E.?E~}z
{ :;" aUHU'
for(int i=0;i<nStartPos.length;i++) Ib_n'$5#z
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); []GthF
} Xtu:
for(int i=0;i<nEndPos.length-1;i++) _)HD4,`
{ ws*~$x?7
nEndPos = nStartPos[i+1]; Vy?R/
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} ccHLL6F{
nEndPos[nEndPos.length-1] = nFileLength; H1aV}KD
} {^PO3I
} 2LhfXBWf
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//启动子线程 gaLEhf^
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; V6DBKq
for(int i=0;i<nStartPos.length;i++) XgwMppacw
{ [ u`17hyX
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), o2[vM$]
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), .g6PrhzFbk
nStartPos,nEndPos,i); 2eZk3_w
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); PfwI@%2
fileSplitterFetch.start(); $V`KrA~]
} &=+cov(3
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), M<SbVP|V"
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); el2*\(XT
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", k"Z"$V2i
nEndPos = " + nFileLength); @%I_&!d
// fileSplitterFetch[nPos.length-1].start(); >?\v@
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//等待子线程结束 = )JVT$]w
//int count = 0; yr/]xc$
//是否结束while循环 vp )}/&/
boolean breakWhile = false; O<eWq]
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while(!bStop) Zq\RNZ}
{ :_{{PY0PK
write_nPos(); j#Ky0+@V
Utility.sleep(500); z*NC?\
breakWhile = true; SIaUrC
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for(int i=0;i<nStartPos.length;i++) w(vE2Y ?
{ ,w9#%=xE
if(!fileSplitterFetch.bDownOver) YJ$Vn>6Z
{ + WU|sAK"
breakWhile = false; IF36K^K
break; `uM0,Z
} B"?+5A7
} !i~x"1
if(breakWhile) }rj C_q
break; #x4h_K
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//count++; tpNtoqg_$
//if(count>4) &.+n
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// siteStop(); !yV,|)y5F
} Th&Wq
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System.err.println("文件下载结束!"); }ZM*[j
} EL 8N[]RF
catch(Exception e){e.printStackTrace ();} `\RX~ $^
} nyl8=F:V
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//获得文件长度 &0th1-OP_
public long getFileSize() 4mM2C`I
{
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int nFileLength = -1; c5wkzY h
try{ "&~?Hzm
URL url = new URL(siteInfoBean.getSSiteURL()); 5Sm 5jRr
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); iXG>j.w{79
httpConnection.setRequestProperty("User-Agent","NetFox"); B:6sVJ
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int responseCode=httpConnection.getResponseCode(); *1o+o$hY2
if(responseCode>=400) quCWc2pXX
{ >^a"Z[s[
processErrorCode(responseCode); wEHAkc)Q
return -2; //-2 represent access is error UgD'Bi
} JK:mQ_
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String sHeader; lEYT{
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for(int i=1;;i++) <*r<+S
{ }n2-*{)x
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); aaqd:N)
//Utility.log(in.readLine()); |W~V@n8"6
sHeader=httpConnection.getHeaderFieldKey(i); QGbD=c7
if(sHeader!=null) f,`}hFD
{ bWQORjnd8
if(sHeader.equals("Content-Length")) '4^V4i
{ _;J9q}X
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); a7v[l04
break; ]\D6;E8P-~
} QS=$#Gp
} @aiLGwh
else rs 1*H
break; [K)1!KK,L
} R26tQbwE
} ,@'){V
catch(IOException e){e.printStackTrace ();} LD~uI
catch(Exception e){e.printStackTrace ();} QIMv9;
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Utility.log(nFileLength); FbCZV3Y
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return nFileLength; @DQ"vFj6<
} !k>H e*M}P
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//保存下载信息(文件指针位置) MVeQ5c(
private void write_nPos() 9+is?Pj
{ ndCS<ojcBP
try{ tzW<&^
output = new DataOutputStream(new FileOutputStream(tmpFile)); iQ]c
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output.writeInt(nStartPos.length); v20I<!5w
for(int i=0;i<nStartPos.length;i++) 't]EkH]BC
{ d a?th
// output.writeLong(nPos); !^w\$cw&
output.writeLong(fileSplitterFetch.nStartPos); 18/@:u{
output.writeLong(fileSplitterFetch.nEndPos); M(h H#_$
} \2<yZCn
output.close(); mN'9|`>V>
} n 8OdRv
catch(IOException e){e.printStackTrace ();} w)m0Z4*
catch(Exception e){e.printStackTrace ();} 9-E>n)
} 55\X\>
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//读取保存的下载信息(文件指针位置) GY$?^&OO>
private void read_nPos() 'y M:WcN
{ ^Lfn3.M
try{ ;~Gpw/]5E
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); CU>K
int nCount = input.readInt(); U)w|GrxX
nStartPos = new long[nCount]; >'|xQjLl
nEndPos = new long[nCount]; /L|}Y242
for(int i=0;i<nStartPos.length;i++) <9@]|
{ 5WNg+
nStartPos = input.readLong(); vBn=bb'W
nEndPos = input.readLong(); SQKY;p
} &G,o guo
input.close(); 6% y)
} / ?[gB:s
catch(IOException e){e.printStackTrace ();} wCTR-pL^
catch(Exception e){e.printStackTrace ();} ^)IL<S&h
} ; ?lM|kK
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private void processErrorCode(int nErrorCode) POg0=32
{ 5 EuJ
System.err.println("Error Code : " + nErrorCode); PKM$*_LcGI
} pnA]@FW
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//停止文件下载 0l1]QD+Gc5
public void siteStop() ,WDAcQ8\
{ muX4 Y1M_
bStop = true; hYZ:" x
for(int i=0;i<nStartPos.length;i++) :kx#];2i
fileSplitterFetch.splitterStop(); 4b(irDT3F
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} Okg8Ve2
} =]xk-MY"|R
//负责部分文件的抓取
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**FileSplitterFetch.java S w(
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*/ Rw{v"n
package NetFox; ~M^7qO
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import java.io.*; u[|S*(P
import java.net.*; z%dlajYm:
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public class FileSplitterFetch extends Thread { |ShRxE3@'
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String sURL; //File URL {uM{5GSL
long nStartPos; //File Snippet Start Position ;_\
long nEndPos; //File Snippet End Position pbvEIa-Y4
int nThreadID; //Thread's ID %+!9
boolean bDownOver = false; //Downing is over e&4wwP"`<
boolean bStop = false; //Stop identical IIn\{*|mW
FileAccessI fileAccessI = null; //File Access interface x15tQb+
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException _vLT!y
{ WI!z92qq[
this.sURL = sURL; 4$2T zJE
this.nStartPos = nStart; !cq|g
this.nEndPos = nEnd; Tc(v\|F,
nThreadID = id; M)pi)$&c
fileAccessI = new FileAccessI(sName,nStartPos);//定位 BBJ]>lQ
} :::f,aCAu
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public void run() uv!qE1z@':
{ ~S>ba']
while(nStartPos < nEndPos && !bStop) .*f4e3
{ #R PB;#{
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try{ y8S6ZtA}2
URL url = new URL(sURL); &&S4x
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); eRy'N|'
httpConnection.setRequestProperty("User-Agent","NetFox"); GWZXRUc
String sProperty = "bytes="+nStartPos+"-"; ^k<$N
httpConnection.setRequestProperty("RANGE",sProperty); RWQW/Gwx
Utility.log(sProperty);
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InputStream input = httpConnection.getInputStream(); 5nq-b@?L
//logResponseHead(httpConnection); P1 >X5:
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byte[] b = new byte[1024]; }t-|^mY>
int nRead; 3}1+"? s
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) qTMz6D!Q
{ ujqktrhuLb
nStartPos += fileAccessI.write(b,0,nRead); p%
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//if(nThreadID == 1) Qu\l$/
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 64X#:t+
} c qyh#uWe
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Utility.log("Thread " + nThreadID + " is over!"); FN`kSTm*0!
bDownOver = true; 1CVaGD^r{
//nPos = fileAccessI.write (b,0,nRead); r3vj o(
} =F[,-B~
catch(Exception e){e.printStackTrace ();} 2=M!lB
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} hD"~
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} SZD2'UaG
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//打印回应的头信息 [te7uZv-
public void logResponseHead(HttpURLConnection con) 5g2+Ar(
{ ]LOtwY
for(int i=1;;i++) }jgAV
{ aKtTx~$@
String header=con.getHeaderFieldKey(i); p&l:937
if(header!=null) k $&A
//responseHeaders.put(header,httpConnection.getHeaderField(header)); B9:0|i!!A`
Utility.log(header+" : "+con.getHeaderField(header)); |?=1tS{iT
else BVp.A]
break; K3D $
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} '+zsj0!A
} Jz0S2&
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public void splitterStop() P`"DepeD
{ .WE0T|qDX
bStop = true; 'B6H/d>
} bQjHQ"G
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} 1&"1pH
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/* @cGql=t
**FileAccess.java bM3e7olWS
*//文件访问(定位,写) AR3=G>hO,
package NetFox; L"/ato
import java.io.*; D9C; JD
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public class FileAccessI implements Serializable{ ".<p R}
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 rP4@K%F9jB
RandomAccessFile oSavedFile; 9ksrr{tW
long nPos; lM,:c.R
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public FileAccessI() throws IOException ;f~'7RKy!G
{ %TgM-F,8
this("",0); iW~f
} vy?YA-
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public FileAccessI(String sName,long nPos) throws IOException Y|nTc.A
{ Mv=;+?z!
oSavedFile = new RandomAccessFile(sName,"rw"); \s'6)_
this.nPos = nPos; ?0Zw ^a
oSavedFile.seek(nPos); _0E,@[
} Bx>@HU
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public synchronized int write(byte[] b,int nStart,int nLen) R&xd
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{ gXMkI$ab
int n = -1; [?*^&[
try{ mJ7kOQ-.$
oSavedFile.write(b,nStart,nLen); c= uORt>
n = nLen; mH .I!
} Y,~]ecI
catch(IOException e) <~w#sIh
{ MsQS{ok+
e.printStackTrace (); LJ3UB
} DI[Ee?
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return n; Q pq0j^\
} (tN$G:+")F
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} yl%F<5
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/* th,qq
**SiteInfoBean.java ^5}3FvW
*/ pE N`&'4
package NetFox; H(s^le:!
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public class SiteInfoBean { b87o6"j
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private String sSiteURL; //Site's URL s2WB4Uk
private String sFilePath; //Saved File's Path ps{(UYM=b
private String sFileName; //Saved File's Name p?@D'
private int nSplitter; //Count of Splited Downloading File GkFNLM5'
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public SiteInfoBean() is$d<Y&F
{//nSplitter的缺省值为5 E?uv&evPK7
//default value of nSplitter is 5 CjGI}t
this("","","",5); A )cb
} HZ3<}`P_W
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) R?Qou!*]
{ Kw|`y %~
sSiteURL= sURL; }s[/b"%y
sFilePath = sPath; ]\U'_G2]
sFileName = sName; \Wk$>?+#@
this.nSplitter = nSpiltter; JV>OmUAk
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} =[&Jxy>Y
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public String getSSiteURL() XEI]T~
{ (
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return sSiteURL; K]l)z* I
} plq\D.C
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public void setSSiteURL(String value) y8@!2O4
{ sBwgl9
sSiteURL = value; Ih0GzyU*4
} ^8iy(
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public String getSFilePath() vY6|V$
{ xjpW<-)MLf
return sFilePath; EbQ} w"{
} *bx cq
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public void setSFilePath(String value) LFC k6 R
{ >+r2I%
sFilePath = value; vhC"f*
} tdm /U
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public String getSFileName() Z6p>R;9n
{ fu/c)D6u*m
return sFileName; w#XJ!f6*_9
} XV&