/* 6 b-'Hu i+
**SiteFileFetch.java ';'gKX!9V
*/ \I"n~h^_
package NetFox; 1L3+KD~
import java.io.*; Z}$wvd
import java.net.*; yI$KBx/]n
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public class SiteFileFetch extends Thread { hX4V}kj
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SiteInfoBean siteInfoBean = null; //文件信息Bean (}*1,N!#
long[] nStartPos; //开始位置 DsX+/)d
long[] nEndPos; //结束位置 jEu-CU#:
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ZB+~0[C
long nFileLength; //文件长度 r?7tI0
boolean bFirst = true; //是否第一次取文件 .:r
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boolean bStop = false; //停止标志 tK7v&[cI
File tmpFile; //文件下载的临时信息 iewwL7
DataOutputStream output; //输出到文件的输出流 0H!J
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 4m1@lnjp
public SiteFileFetch(SiteInfoBean bean) throws IOException
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{ L5DeLF+
siteInfoBean = bean; ?LSwJ
@#
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); tXfXuHa
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); i4Da 'Uk
if(tmpFile.exists ()) 5D+rR<pD}"
{ Xx,Rah)X3
bFirst = false; `}.jH1Fx/m
read_nPos(); Kt3T~k
} P1_6:USBM
else s.$:.*k
{ )6b`1o!7
nStartPos = new long[bean.getNSplitter()]; ?+_Y!*J2b
nEndPos = new long[bean.getNSplitter()]; Q3<ctd\]Y
} !,<rW<&;
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} g|Xjw Ti8$
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public void run() }Jo}K)>!
{ T&ib]LmR
//获得文件长度 sjy/[.4-
//分割文件 vyBx|TR
//实例FileSplitterFetch xey?.2K1A
//启动FileSplitterFetch线程 d1}cXSQ1T
//等待子线程返回 yk0^m/=C(
try{ -&h<t/U
if(bFirst) @{@DGc
{ (j&7`9<5
nFileLength = getFileSize(); \2 Yo*jE}
if(nFileLength == -1) %Y=
{ wBCBZs$H
System.err.println("File Length is not known!"); Um!LF"Z
} ,l#f6H7p
else if(nFileLength == -2) ]D_
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{ QfV:&b`
System.err.println("File is not access!");
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} R[W'LRh~:1
else ZMEYF!jN
{ :gM_v?sy
for(int i=0;i<nStartPos.length;i++) \Icd>>)*
{ \iH\N/
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ~p { fl?
} r!c7{6N
for(int i=0;i<nEndPos.length-1;i++) Va$JfWef
{ %'MR;hQsd8
nEndPos = nStartPos[i+1]; Tffdm
} |!cM_&
nEndPos[nEndPos.length-1] = nFileLength; mr+8[0
} &4m;9<8\
} Ubv_a
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//启动子线程 eY\!}) 5
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; YR.f`-<Z
for(int i=0;i<nStartPos.length;i++) PG*FIRDb
{ SJO^.[
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), `aM8L
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), %(~8a
nStartPos,nEndPos,i);
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); L[Y|K%;~
fileSplitterFetch.start(); d[&Ah~,
} lT+N{[kLt*
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), D n}TO*
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); TnLblkX
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", (*G'~gSX
nEndPos = " + nFileLength); *h~(LH"tN
// fileSplitterFetch[nPos.length-1].start(); S%7%@Qs"%
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//等待子线程结束 |dqvv
//int count = 0; U/:x<Y$ tj
//是否结束while循环
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boolean breakWhile = false; vW03nt86
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while(!bStop) =ve, !
{ (^= Hq'D
write_nPos(); V5]:^=
Utility.sleep(500); B=hJ*;:p
breakWhile = true; *Bx'g|
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for(int i=0;i<nStartPos.length;i++) J.pe&1
{ -0:B2B
if(!fileSplitterFetch.bDownOver) ?r}!d2:dX
{ BXX1G
breakWhile = false; \:-N<[
break; Lz;E/a}s
} ?p!+s96
} ot.R Gpg%
if(breakWhile) l|K`'YS!<{
break; -QP&A >]7
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//count++; me/ae{
//if(count>4) `-)Fx<e
// siteStop(); |cq%eN
} Z|a\rNv
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System.err.println("文件下载结束!"); >zWVM1\\j
} sTGe=}T8
catch(Exception e){e.printStackTrace ();} b{Kw.?85
} 9C)w'\u9+
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//获得文件长度 {cBLm/C
public long getFileSize() 2-M]!x)
{ 6Bfu89
int nFileLength = -1; Gg9NG`e6I
try{ Ig6>+Mw
URL url = new URL(siteInfoBean.getSSiteURL()); yD!V;?EnK
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ZW|VAn'>
httpConnection.setRequestProperty("User-Agent","NetFox"); O[fgn;@|
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int responseCode=httpConnection.getResponseCode(); 3fJwj}wL
if(responseCode>=400) ^y"$k
{ N:@C%
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processErrorCode(responseCode); Cz_chK4
return -2; //-2 represent access is error md/Z[du:'
} ?$^qcpJCp
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String sHeader; \$h LhYz-
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for(int i=1;;i++) @kKmkVhu*
{ @.X}S"yr
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); :[N[D#/z
//Utility.log(in.readLine()); a".uS4x
sHeader=httpConnection.getHeaderFieldKey(i); .SdEhW15)
if(sHeader!=null) QPfS3%p`
{ :*!u\lV \
if(sHeader.equals("Content-Length")) )Oz( <vxw
{ ZCMB]bL-e
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 5Ffz^;i
break; O/\jkF
} Sn/~R|3XA7
} (K+TqJw
else ?Ib/}JST
break; R6Cm:4m}I
} E `)p,{T
} wDZFOx0#8
catch(IOException e){e.printStackTrace ();} 5@Q4[+5&_
catch(Exception e){e.printStackTrace ();} !DCJ2h%E[_
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Utility.log(nFileLength); :u{0M&
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return nFileLength; @X/S
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} 7-ba-[t#A
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//保存下载信息(文件指针位置) "ngYh]Git$
private void write_nPos() ('uYA&9
{ fu=}E5ScK
try{ RQU5T 2,
output = new DataOutputStream(new FileOutputStream(tmpFile)); %i%Xi+{3
output.writeInt(nStartPos.length); .tN)H1.:B
for(int i=0;i<nStartPos.length;i++) ojVpw4y.
{ 0mj=\ j
// output.writeLong(nPos); H8K<.RY
output.writeLong(fileSplitterFetch.nStartPos); :<&}/r
output.writeLong(fileSplitterFetch.nEndPos); ^l^_ K)tw*
} #G.3a]p}"
output.close(); 5.[{PJ]bq
} pLzsL>6h
catch(IOException e){e.printStackTrace ();} vEzzdDwi6
catch(Exception e){e.printStackTrace ();} `z` `d*_
} !icpfxOpjQ
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//读取保存的下载信息(文件指针位置) Z{p6Q1u
private void read_nPos() aG}9Z8D
{ f/;\/Q[Z7
try{ I I>2\d|
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); EkSTN
int nCount = input.readInt(); 4rM77Uw>
nStartPos = new long[nCount]; % C
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nEndPos = new long[nCount]; 38q@4U=aiw
for(int i=0;i<nStartPos.length;i++) N@MeaO
{ pXFNK"jm
nStartPos = input.readLong(); qfSoF|
nEndPos = input.readLong(); FOk @W&
} k) v[/#I
input.close(); )i_FU~ LRq
} Ix"c<1I
catch(IOException e){e.printStackTrace ();} K%=n \Y
catch(Exception e){e.printStackTrace ();} l IFt/
} Ab2g),;c
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private void processErrorCode(int nErrorCode) u\e#_*>
{ ImV54h'
System.err.println("Error Code : " + nErrorCode); =H,cwSE+%
} Ar<OP'C
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//停止文件下载 Yip9K[
public void siteStop() Q?a"uei[
{ #h3+T*5} 6
bStop = true; d(@A
for(int i=0;i<nStartPos.length;i++) tJwF
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fileSplitterFetch.splitterStop(); L\Jl'r|
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} 7%E1F)%
} :>X7(&j8
//负责部分文件的抓取 jYy0^)6X(
**FileSplitterFetch.java "q`%d_
*/ ^X&9"x)4
package NetFox; 6gKOpa
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import java.io.*; vfv5ex(
import java.net.*; Un/fP1
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public class FileSplitterFetch extends Thread { Q
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String sURL; //File URL 4jz]c"p-
long nStartPos; //File Snippet Start Position %f-<ol
long nEndPos; //File Snippet End Position >o} ati
int nThreadID; //Thread's ID V1:3
boolean bDownOver = false; //Downing is over >1~`tP
boolean bStop = false; //Stop identical W<LaR,7
FileAccessI fileAccessI = null; //File Access interface ?8, N4T0)
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException }}1/Ede{5
{ zrew:5*uZ
this.sURL = sURL; "?{yVu~9
this.nStartPos = nStart; ^d9raYE`'
this.nEndPos = nEnd; Dq?HUb^X
nThreadID = id; l1)pr{A
fileAccessI = new FileAccessI(sName,nStartPos);//定位 0w['jh|,
} lkZC?--H
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public void run() X{xJ*T y'
{ BNCJT$tYX
while(nStartPos < nEndPos && !bStop) qE72(#:R*
{ j_yFH#^W:
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try{ |2<f<k/UT
URL url = new URL(sURL); V3W85_*
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); _<a)\UR
httpConnection.setRequestProperty("User-Agent","NetFox"); #@6L|$iX
String sProperty = "bytes="+nStartPos+"-"; JX)z<Dz$
httpConnection.setRequestProperty("RANGE",sProperty); $JB:rozE
Utility.log(sProperty); G`#gV"PlC
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InputStream input = httpConnection.getInputStream(); ^X;Xti
//logResponseHead(httpConnection); 'B5J.Xe:
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byte[] b = new byte[1024]; 4D8y b|o
int nRead; ]A]E)*
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) '(pdk
{ _
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nStartPos += fileAccessI.write(b,0,nRead); OEE{JVeI
//if(nThreadID == 1) [E~,> Q
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); z){UuiUM+=
} xnQGCw?S&}
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Utility.log("Thread " + nThreadID + " is over!"); sHTePEJ_h
bDownOver = true; Eb[H3v48,
//nPos = fileAccessI.write (b,0,nRead); Wx|6A#cg!
} _Q}RElA
catch(Exception e){e.printStackTrace ();} Z^`=!n-V
} ?*R^?[
} #Wm@&|U
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//打印回应的头信息 `{|}LFS>
public void logResponseHead(HttpURLConnection con) l&sO?P[ /
{ {.D2ON
for(int i=1;;i++) UE,~_hp
{ @j\?h$A/
String header=con.getHeaderFieldKey(i); fpK0MS]=b
if(header!=null) 1yaIV+_y/
//responseHeaders.put(header,httpConnection.getHeaderField(header)); <#p|z`N
Utility.log(header+" : "+con.getHeaderField(header)); dI
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else J ]Gc
break; WQLHjGehe
} $|cp;~ 1
} .f !]@"\
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public void splitterStop() ;c
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{ >.O*gv/_
bStop = true;
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} \;B$hT7z*
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} V:F+HMBk
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/* 5 <)gCHa
**FileAccess.java <(bCz>o|
*//文件访问(定位,写) PK2Rj%
package NetFox; j""y2c1
import java.io.*; UE&C
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public class FileAccessI implements Serializable{ fNAo$O4cm
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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 X #p o|,Q
RandomAccessFile oSavedFile; 47C(\\
long nPos; Rg8m4x w
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public FileAccessI() throws IOException ^EC)~HP@C
{ rF8W(E_=
this("",0); 409x!d~it
} l`v
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public FileAccessI(String sName,long nPos) throws IOException +gbX}jF0%
{ ^)9MzD^_nV
oSavedFile = new RandomAccessFile(sName,"rw"); >/!7i3Ow-
this.nPos = nPos; h V|v6 _
oSavedFile.seek(nPos); WA]%,6
} j.=UI-&m
H}) Dcg3
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public synchronized int write(byte[] b,int nStart,int nLen) ( Lok
{ ,>bGbx
int n = -1; SE,o7_k'S
try{ .%x"t>]
oSavedFile.write(b,nStart,nLen); iA55yT+
n = nLen; F,p`-m[q
} b(PHZCy#
catch(IOException e) H4PbO/{xO
{ [K/O5_
e.printStackTrace (); p3M#XC_H]
} 4
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return n; B`?N,N"
} o}9M`[
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} ~t'#n V
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/* U0NOU#
**SiteInfoBean.java fH{9]TU_:
*/ +3M$3w{2
package NetFox; OOEV-=
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public class SiteInfoBean { 1a7!4)\
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private String sSiteURL; //Site's URL *)MX%`Z}
private String sFilePath; //Saved File's Path >;&Gz-lm
private String sFileName; //Saved File's Name H7{Q@D8
private int nSplitter; //Count of Splited Downloading File `^v4zWDK
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public SiteInfoBean() RY9+ 9i
{//nSplitter的缺省值为5 xj0cgK|!
//default value of nSplitter is 5 q>^hoW2$C
this("","","",5); FhWmO
} 1|o$X
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) .qSBh
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{ -G8c5b[
sSiteURL= sURL; {*N^C@
sFilePath = sPath; wb]*u7G
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sFileName = sName; u K'<xM"%T
this.nSplitter = nSpiltter; i\(\MzW*'
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} #MUiL=
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public String getSSiteURL() 8O;Vl
{ w|=gSC-o
return sSiteURL; 1 ojhh7<
} +W6Hva.
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public void setSSiteURL(String value) ]$3+[9x'
{ ^Z2kq2}a
sSiteURL = value; NjbwGcH%\
} 5|{)Z]M%9
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public String getSFilePath() -&im