/* yj_4gxJ\
**SiteFileFetch.java n<7q`tM#
*/ l"+Jc1\ X
package NetFox; T+IF}4ed
import java.io.*; J'T=q/
import java.net.*; rcN 9.1
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public class SiteFileFetch extends Thread { p/GVTf
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SiteInfoBean siteInfoBean = null; //文件信息Bean s60
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long[] nStartPos; //开始位置 L{fFC%|l2L
long[] nEndPos; //结束位置 Hi}RZMr1
FileSplitterFetch[] fileSplitterFetch; //子线程对象 $E!J:Y=
long nFileLength; //文件长度 j\&pej
boolean bFirst = true; //是否第一次取文件 # Su~`]
boolean bStop = false; //停止标志 Zjh2{ :
File tmpFile; //文件下载的临时信息 [wnDHy6W
DataOutputStream output; //输出到文件的输出流 ,5Vt]#F5@
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) r'7LR
public SiteFileFetch(SiteInfoBean bean) throws IOException s^8u&y)3
{ s Be7"^
siteInfoBean = bean; !|Q5Zi;aX7
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); >QkP7Kb
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 8V/L:h#7
if(tmpFile.exists ()) ~+6Vdxm
{ L=;
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bFirst = false; ??&<k
read_nPos(); rNDrp@A>
} C})'\1O%
else Zyf P;&
{ wq!iV |
nStartPos = new long[bean.getNSplitter()]; q(M:QWA q
nEndPos = new long[bean.getNSplitter()]; .ic:`1
} ]/X(V|t
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} /0MDISQy9
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public void run() V^s0fWa
{ Di.3113t
//获得文件长度 Xd
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//分割文件 WYcA8X/
//实例FileSplitterFetch 5e8AmY8;
//启动FileSplitterFetch线程 }2 8=
//等待子线程返回 #'baPqdO
try{ #KlCZ~s
if(bFirst) [^YA=Khu
{ !D^c3d
nFileLength = getFileSize(); "/{RhY<
if(nFileLength == -1) NQHz<3S[
{ 8jlLUG:g
System.err.println("File Length is not known!"); yY).mxRN
} ;E^K.6
else if(nFileLength == -2) ZJW[?V\5=
{ >/$Fh:R-
System.err.println("File is not access!"); e.d
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} bpAv1udX-W
else W!Gdf^Yy<
{ (.Y/
for(int i=0;i<nStartPos.length;i++) rh*sbZ68>E
{ 1Tp/MV/>
nStartPos = (long)(i*(nFileLength/nStartPos.length)); $g9**b@
} oPf)be| #
for(int i=0;i<nEndPos.length-1;i++) KL,/2(
{ _*M42<wcO
nEndPos = nStartPos[i+1]; g`^X#-!(
} bBcp9C)iY
nEndPos[nEndPos.length-1] = nFileLength; &C<yfRDu
} jhgX{xc
} Fh|#u:n
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//启动子线程 >r@.F%
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Bh`N[\r
for(int i=0;i<nStartPos.length;i++) +avMX&%
{ YUU-D(
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), G6P)C##ibn
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), E(pF:po
nStartPos,nEndPos,i); {PU!=IkTS
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 'wasZ b<^
fileSplitterFetch.start(); UB`ToE|Ii
} m><w0k?t
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), N7r_77%m0
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); `$LWmm#
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 6DIZ@ oi
nEndPos = " + nFileLength); ~5
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// fileSplitterFetch[nPos.length-1].start(); -/C)l)V}
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//等待子线程结束 Ox!U8g8c
//int count = 0; lH^^77"4Qo
//是否结束while循环 %.v{N6
boolean breakWhile = false; DhLqhME53
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while(!bStop) ^$>XW\yCs
{ ~[o4a '
write_nPos(); Qp,DL@mp>8
Utility.sleep(500); `N//A}9
breakWhile = true; ]Y>h3T~
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for(int i=0;i<nStartPos.length;i++) !rDdd%Z
{ w.\w1:d
if(!fileSplitterFetch.bDownOver) [S]S^ej*8
{ tY${M^^<J
breakWhile = false; vr^~yEr
break; q LL,F
} [H\:pP8t
} 54;J8XT7
if(breakWhile) 0kQPJWF
break; jxaD&4Fs8
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//count++; b !@Sn/
//if(count>4) qW:)!z3\
// siteStop(); G|w=ez
} ,
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System.err.println("文件下载结束!"); '3]p29v{
} g[
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catch(Exception e){e.printStackTrace ();} v0D q@Q1
} &c(WE
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//获得文件长度 9Etz:?)b
public long getFileSize() iI@jZVk
{ 02`$OTKz
int nFileLength = -1; G&xo1K]
try{ hv 6@Jr3
URL url = new URL(siteInfoBean.getSSiteURL()); _Y=2/*y^
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); <^~FLjsfg
httpConnection.setRequestProperty("User-Agent","NetFox"); .?p\n7
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int responseCode=httpConnection.getResponseCode(); P&d"V<
if(responseCode>=400) b*;"q9u5
{ w;}@'GgL
processErrorCode(responseCode); 6$a$K,dZ
return -2; //-2 represent access is error $WYbm}j
} I$NhXZ)KT
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String sHeader; =~Ynz7 /x
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for(int i=1;;i++) &zQ2M#{82
{ <Llp\XcZ
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); (Rk_-9_E.
//Utility.log(in.readLine());
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sHeader=httpConnection.getHeaderFieldKey(i); ,P'P^0qJ
if(sHeader!=null) >&g}7d%
{ '}g*!jL
if(sHeader.equals("Content-Length")) QIN."&qC^
{ ri`R<l8
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); $@d9<83=
break; wiaX&-c]8
} IM$2VlC
} w{~+EolK
else ms($9 Lv/
break; nzjkX4KV
} O%1v)AT&\
} ^JI o?R
catch(IOException e){e.printStackTrace ();} i,V;xB2
catch(Exception e){e.printStackTrace ();} nJRS.xs
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Utility.log(nFileLength); %N;!+
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return nFileLength; !3mA0-!+
} I -Xlx<
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//保存下载信息(文件指针位置) lPLz@Up~
private void write_nPos() _|72r}j
{ 2fU$J>Y
try{ OA:%lC!
output = new DataOutputStream(new FileOutputStream(tmpFile)); {T"0DSV
output.writeInt(nStartPos.length); h2ZkCML
for(int i=0;i<nStartPos.length;i++) |/gW_;(
{ -~eJn'W
// output.writeLong(nPos); mcz+P |
output.writeLong(fileSplitterFetch.nStartPos); f:g,_|JD$
output.writeLong(fileSplitterFetch.nEndPos); d=,%=@
} 1h*)@
output.close(); 9ukg }_Hx
} ]M)O YY
catch(IOException e){e.printStackTrace ();} 1)}=bhT
catch(Exception e){e.printStackTrace ();} 2&+#Vsm`V
} Auy_K?he]
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//读取保存的下载信息(文件指针位置) P5lqSA{6
private void read_nPos() H$af/^
{ =#mTfJ
try{
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DataInputStream input = new DataInputStream(new FileInputStream(tmpFile));
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int nCount = input.readInt(); #j@71]GI
nStartPos = new long[nCount]; V{|}}b?w?
nEndPos = new long[nCount]; mh<=[J,%p
for(int i=0;i<nStartPos.length;i++) ZKg{0DY
{ Ca%g_B0t
nStartPos = input.readLong(); }SI GPVM
nEndPos = input.readLong(); oG$)UTzGc
} LlBN-9p
input.close(); 0-LpqX
} e*+FpW@
catch(IOException e){e.printStackTrace ();} =%zLh<3v
catch(Exception e){e.printStackTrace ();} `/Nm
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} yq+!czlZ
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private void processErrorCode(int nErrorCode) USN8N (
{ r>jC_7
System.err.println("Error Code : " + nErrorCode); tbnH,*
} ~gz^Cdh
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//停止文件下载 tBTTCwNT%
public void siteStop() 2_Wg!bq
{ 64-#}3zL
bStop = true; xEuN
for(int i=0;i<nStartPos.length;i++) T#pk]c6Q
fileSplitterFetch.splitterStop(); `%3/
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} \A`hj~
} 4tSv{B/}
//负责部分文件的抓取 7Cjd.0T=(
**FileSplitterFetch.java sH[
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*/ I\qYkWg7
package NetFox; K[chjp!$l
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import java.io.*; #YDr%>j
import java.net.*; nC {K$
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public class FileSplitterFetch extends Thread { 8 6f2'o+
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String sURL; //File URL WvHw{^(lF
long nStartPos; //File Snippet Start Position (HoqR
long nEndPos; //File Snippet End Position i&8FBV-
int nThreadID; //Thread's ID PA6=wfc
boolean bDownOver = false; //Downing is over mAk{"65V
boolean bStop = false; //Stop identical .qk]$LJF7
FileAccessI fileAccessI = null; //File Access interface <o2r~E0r3
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException %+ZJhHT
{ $,xnU.n
this.sURL = sURL; bqanFQj
this.nStartPos = nStart; O4<g%.HC6
this.nEndPos = nEnd; Ev!{n
nThreadID = id; @|a>&~xX
fileAccessI = new FileAccessI(sName,nStartPos);//定位 P;PQeXKw
} iR$<$P5
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public void run() ]d[ge6
{ $8l({:*q0
while(nStartPos < nEndPos && !bStop) Wlh~)
{ B*htN
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try{ ,Ma.V\T[
URL url = new URL(sURL); U|G|l|Bl
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); c:83LZ
httpConnection.setRequestProperty("User-Agent","NetFox"); vd`}/~o
String sProperty = "bytes="+nStartPos+"-"; PX|=(:(k
httpConnection.setRequestProperty("RANGE",sProperty); q P ;A}C
Utility.log(sProperty); mj?16\|]
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InputStream input = httpConnection.getInputStream(); 9;yn}\N `
//logResponseHead(httpConnection); d2X[(3
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byte[] b = new byte[1024]; IPuA#C
int nRead; ?Z\Yu'
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) .I3?7
{ E^w:KC2@
nStartPos += fileAccessI.write(b,0,nRead); 5q@LxDy,b
//if(nThreadID == 1) D .vw8H3
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Bh&Ew
} {;2i.m1
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Utility.log("Thread " + nThreadID + " is over!"); {F&-7u0
bDownOver = true; 2A4FaBq"
//nPos = fileAccessI.write (b,0,nRead); +Taa!hfys
} [NnauItI
catch(Exception e){e.printStackTrace ();} 1Xy]D
} @|yeqy_:
} dQezd-y*
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//打印回应的头信息 Q bhW!9(,
public void logResponseHead(HttpURLConnection con) +@X5!S6
{ GC8}X;((Y
for(int i=1;;i++) 5CAR{|a
{ {|9}+
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String header=con.getHeaderFieldKey(i); S)He$B$pp
if(header!=null) HEK-L)S.
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//responseHeaders.put(header,httpConnection.getHeaderField(header)); +.[\g|G
Utility.log(header+" : "+con.getHeaderField(header)); 0ZAj=u@O
else QbYc[8-[
break; ,1Qd\8N9
} m}VM+=
} i5hD#
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public void splitterStop() 9?+9UlJ7K
{ mzL[/B#>M
bStop = true; ;??ohA"{5
} NGjdG=,
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