/* 0j!ke1C&C
**SiteFileFetch.java b2X'AHK S
*/ P!+nZXo
package NetFox; A?D"j7JD=L
import java.io.*; 0t COb9
import java.net.*; &U$8zn~[k
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public class SiteFileFetch extends Thread { K=Z]#bm
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SiteInfoBean siteInfoBean = null; //文件信息Bean b^,Mw8KsO
long[] nStartPos; //开始位置 x)VIA]
long[] nEndPos; //结束位置 ;5Vk01R
FileSplitterFetch[] fileSplitterFetch; //子线程对象 +yb$[E*
long nFileLength; //文件长度 f'6qJk%J
boolean bFirst = true; //是否第一次取文件 4ZJT[zi
boolean bStop = false; //停止标志 X!rQ@F3
File tmpFile; //文件下载的临时信息 >}DjHLTW\
DataOutputStream output; //输出到文件的输出流 ~"q,<t
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) sb|3|J6=
public SiteFileFetch(SiteInfoBean bean) throws IOException q"+ q
{ K>R;~
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siteInfoBean = bean; m-'(27
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); R8[iXXjku
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); #i +P(xV
if(tmpFile.exists ()) Qw<kX*fxrI
{ [p W1=tI
bFirst = false; K\KO5A
read_nPos(); N=Uc=I7C
} @ojg`!,
else I,<>%Z|'
{ \'??
nStartPos = new long[bean.getNSplitter()]; Jn[q<e"
nEndPos = new long[bean.getNSplitter()]; LPapD@Z
} t}XB|h
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} n4vXm
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public void run() t ?9;cS4
{ i_0,BVC
//获得文件长度 WAwfL?
//分割文件 9*=@/1
//实例FileSplitterFetch qX
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//启动FileSplitterFetch线程 1akD]Z
//等待子线程返回 YMj7
try{ )&Kn(l)
if(bFirst) kj{rk^x
{ T Oco({/_/
nFileLength = getFileSize(); fXu~69_
if(nFileLength == -1) P 34LV+e
{ yZ;k@t_WRD
System.err.println("File Length is not known!"); `rz`3:ZH
} CRc!|?
else if(nFileLength == -2) xH"W}-#[
{ f/0v'
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System.err.println("File is not access!"); Siz!/O!'
} r*i$+ Z
else kMl @v`
{ 6+Wr6'kuH
for(int i=0;i<nStartPos.length;i++) V#gF*]q
{ 6bbZ<E5At
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ,5eH2W
} ;&+[W(7Sy
for(int i=0;i<nEndPos.length-1;i++) Sv~YFS :oy
{ V@#*``M,3
nEndPos = nStartPos[i+1]; *R_'$+
} >9o,S3
nEndPos[nEndPos.length-1] = nFileLength; z"6ZDC6
} 7>PF ~=
} 4f4 i1i:
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//启动子线程 ']d!?>C@o
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; T6h;Y
for(int i=0;i<nStartPos.length;i++) 8zQ_xE
{ cg(QjH"
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), (
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), #*yM2H"7,;
nStartPos,nEndPos,i); ASzzBR;?_
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ^8?j~&u$F
fileSplitterFetch.start(); ="3a%\
} `a9k!3_L
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [cGt
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 5i!V}hE
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", _`bS[%CJ
nEndPos = " + nFileLength); QL)>/%yU
// fileSplitterFetch[nPos.length-1].start(); 1DEO3p
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//等待子线程结束 O`wYMng)
//int count = 0; qDby!^ryc
//是否结束while循环 n0rerI[R
boolean breakWhile = false; S2J#b"Y
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while(!bStop) QD$}-D[
{ X'V+^u@W
write_nPos(); hlAR[ ]
Utility.sleep(500); TK;\_yN
breakWhile = true; RGT_}ni
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for(int i=0;i<nStartPos.length;i++) r?64!VS;
{ )^t!|*1LA
if(!fileSplitterFetch.bDownOver) )8pcf`h{
{ uk`T+@K
breakWhile = false; zc6Ho
break; !"g=&Uy&
} VDB$"T9#
} a`7%A H)
if(breakWhile) OOCQsoN
break; E^b
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//count++;
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//if(count>4) >$2E1HW.
// siteStop(); |'ZN!2u
} X3P&"}a
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System.err.println("文件下载结束!"); ~k9O5S{
} V-[2jC{
catch(Exception e){e.printStackTrace ();} ^[ET&"
} ;LHDh_.pX
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//获得文件长度 `Jn,IDq
public long getFileSize() %/P=m-K
{ 0;}Aj8Fle
int nFileLength = -1; ?sV[MsOsC
try{ Kn']n91m
URL url = new URL(siteInfoBean.getSSiteURL()); bX7EO 8
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Xa4GqV9M/-
httpConnection.setRequestProperty("User-Agent","NetFox"); FI\IY
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int responseCode=httpConnection.getResponseCode(); ppEJs
if(responseCode>=400) S,lxM,DL&
{ doLkrEm&
processErrorCode(responseCode); Ymq3ty]Pe
return -2; //-2 represent access is error S2ark,sp6
} Zotz?jVVr
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String sHeader; Z*9L'd"D|
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for(int i=1;;i++) pP3U,n
{ xFOBF")
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); A
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//Utility.log(in.readLine()); QO@6VY@
sHeader=httpConnection.getHeaderFieldKey(i); for{
if(sHeader!=null) sN-oEqS
{ ]5N zK=2{
if(sHeader.equals("Content-Length")) Z
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{ 9x(}F<L
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); [ dGO,ndE
break; "r@G@pe
} U M@naU
} K${}r0
else *MI)]S
break; vEF=e
} SWT:frki`
} r]9 e^
catch(IOException e){e.printStackTrace ();} TaOOq}8c#
catch(Exception e){e.printStackTrace ();} )Lb72;!?
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Utility.log(nFileLength); ^+M><jE9
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return nFileLength; zwnw'
} Oo
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//保存下载信息(文件指针位置) 0vDg8i\
private void write_nPos() $:e)$Xnn-
{ ?s%v 3T
try{ dsK/6yu
output = new DataOutputStream(new FileOutputStream(tmpFile)); QTYYghz
output.writeInt(nStartPos.length); m`c#:s'_
for(int i=0;i<nStartPos.length;i++) SBX|Bcyk*
{ Yc
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// output.writeLong(nPos); rhIGOk1k
output.writeLong(fileSplitterFetch.nStartPos); ]/_G-2.R
output.writeLong(fileSplitterFetch.nEndPos); ~6kJ~R4
} [%jxf\9jJ_
output.close(); FOSbe]
} )
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catch(IOException e){e.printStackTrace ();} QNb>rLj52
catch(Exception e){e.printStackTrace ();} dhW<p5
} !_dR'
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//读取保存的下载信息(文件指针位置) =5Wp&SM6
private void read_nPos() |YRY!V_w
{ 2A>C+Y[7\
try{ y^G>{?Tha
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 3%2jwR
int nCount = input.readInt(); PPj[;(A
nStartPos = new long[nCount]; xZyeX34{M;
nEndPos = new long[nCount]; /$Z
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for(int i=0;i<nStartPos.length;i++) \6:>{0\
{ 2 h<U
nStartPos = input.readLong(); y@`~ 9$
nEndPos = input.readLong(); b_l3+'#ofM
} wLUF v(&C
input.close(); jN6b*-2
} y
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catch(IOException e){e.printStackTrace ();} "5}%"-#
catch(Exception e){e.printStackTrace ();} +2Ql~w@$^l
} waCboK'
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private void processErrorCode(int nErrorCode) ;E#\
{ 's.~$
System.err.println("Error Code : " + nErrorCode); `NSy"6{Z
} %[ /<+
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//停止文件下载 .LObOR5J7
public void siteStop() h@@d{{IqT
{ *NlpotW,f
bStop = true; &6/%kkv
for(int i=0;i<nStartPos.length;i++) U CRAw3=
fileSplitterFetch.splitterStop(); _q)!B,y-/N
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} {zP#woz2Q
} 0[)VO[
//负责部分文件的抓取 PrSkHxm
**FileSplitterFetch.java DbtF~`3, .
*/ 5V @&o`!=h
package NetFox; s}ADk-7
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import java.io.*; VNj@5s
import java.net.*; ]'k[u
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public class FileSplitterFetch extends Thread { ],[)uTZc
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String sURL; //File URL K%gP5>y*9>
long nStartPos; //File Snippet Start Position rY,PSK/j
long nEndPos; //File Snippet End Position HH8;J66I&
int nThreadID; //Thread's ID etyCrQ
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boolean bDownOver = false; //Downing is over c@(1:,R
boolean bStop = false; //Stop identical hH`Jb77L
FileAccessI fileAccessI = null; //File Access interface @o#+5P
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException %LQ/q3?_
{ .GCR!V
this.sURL = sURL; ?4G(N=/&
this.nStartPos = nStart; JMlV@t7y<
this.nEndPos = nEnd; n3ZAF'
nThreadID = id; cJ/]+|PQ
fileAccessI = new FileAccessI(sName,nStartPos);//定位 //.>>-~1m
} U-EhPAB@
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public void run() b/<mRQ{
{ [AR>?6G-
while(nStartPos < nEndPos && !bStop) K\&o2lo]
{ 1b3(
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try{ z(H?VfJo
URL url = new URL(sURL); q4ipumy*
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); l}}UFEA^
httpConnection.setRequestProperty("User-Agent","NetFox"); *eUc.MX6x
String sProperty = "bytes="+nStartPos+"-"; ~Ltr.ci
httpConnection.setRequestProperty("RANGE",sProperty); nbmc[!PwG
Utility.log(sProperty); tZA:
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InputStream input = httpConnection.getInputStream(); {DBIonY];
//logResponseHead(httpConnection); >F3.c%VU]w
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byte[] b = new byte[1024]; 9y^/GwUQ
int nRead; 6E|S
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) {QQl$ys/
{ ai;\@$ cq
nStartPos += fileAccessI.write(b,0,nRead); 6>DLp}d
//if(nThreadID == 1) Qhy#r
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); rLF*DB3l
} #?&0D>E?k
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Utility.log("Thread " + nThreadID + " is over!"); ;&f1vi4
bDownOver = true; ^od<JD4
//nPos = fileAccessI.write (b,0,nRead); !/hsJ9
} 2P9J'
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catch(Exception e){e.printStackTrace ();} 8S
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} KcXpH]>!9
} FifbxL
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//打印回应的头信息 [B9 ;?G
public void logResponseHead(HttpURLConnection con) 'MQ%)hipA
{ -9o{vmB{
for(int i=1;;i++) G!Zyl^
{ v0@)t&O
String header=con.getHeaderFieldKey(i); w sY}JT
if(header!=null) [uR/M
//responseHeaders.put(header,httpConnection.getHeaderField(header)); };S0 G!
Utility.log(header+" : "+con.getHeaderField(header)); (Uk,
else n%$ &=-Fk
break; [ee30ELn
} mX\
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} B9M>e'H%<
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public void splitterStop() &erm`Ho
{ DDw''
bStop = true; (-"`,8K 2}
} pbn\9C/
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} IOEM[zhb$
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/* A';QuWdT
**FileAccess.java {p/YCch,
*//文件访问(定位,写) ]vo_gKZ
package NetFox; A3+6#?:;
import java.io.*; $s gH'/>
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public class FileAccessI implements Serializable{ Ceg!w#8 Z,
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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 kGHC]Fb)
RandomAccessFile oSavedFile; |_zO_F rtp
long nPos; bd \=h1
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public FileAccessI() throws IOException b{&FuvQg