/* u]-$]zIH
**SiteFileFetch.java Fx 2&ji6u
*/ BZsxf'eN'
package NetFox; ~C3-E %h@Z
import java.io.*; xNU}uW>>T
import java.net.*; &nn":
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public class SiteFileFetch extends Thread { PT=%]o]
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SiteInfoBean siteInfoBean = null; //文件信息Bean M_DkjuR
long[] nStartPos; //开始位置 Px`yD3
long[] nEndPos; //结束位置 420K fVA
FileSplitterFetch[] fileSplitterFetch; //子线程对象 YjT
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long nFileLength; //文件长度 ~V4|DN[I
boolean bFirst = true; //是否第一次取文件 '=xl}v
boolean bStop = false; //停止标志 _GS2&|7`
File tmpFile; //文件下载的临时信息 oUH\SW8?
DataOutputStream output; //输出到文件的输出流 b
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ]|oqJ2P
public SiteFileFetch(SiteInfoBean bean) throws IOException 1Y_fX
{ u]"RAH
siteInfoBean = bean; wP'`!O[W
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); #i?TCO
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); $J+$8pA
if(tmpFile.exists ()) uPpP")
{ gNJ\*]SY
bFirst = false; U]d+iz??b
read_nPos(); Nz8iU@!a
} #gq3 e
else x:(e:I8x(
{ l[gL(p"W
nStartPos = new long[bean.getNSplitter()]; =e63>*M|
nEndPos = new long[bean.getNSplitter()]; | e+m!G1G
} h6#
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public void run() ][.1b@)qV
{ dg-pwWqN
//获得文件长度 ?r/7:
//分割文件 7Sokn?~i
//实例FileSplitterFetch U6{ RHS[
//启动FileSplitterFetch线程 Zhw _L
//等待子线程返回 wvfCj6}S&
try{ 6;VlX,,j
if(bFirst) 0GB6.Ggft
{ R,(^fM
nFileLength = getFileSize(); #ws6z`mt
if(nFileLength == -1) ~{ HA!C#
{ YO=;)RA
System.err.println("File Length is not known!"); {KR/TQ?A
} ym:JtI69
else if(nFileLength == -2) x9uA@$l^|
{ sbgRl%
System.err.println("File is not access!"); 4>(?R[:p)
} Q.nEY6B_
else g?`w)O7v
{ S_^ "$j
for(int i=0;i<nStartPos.length;i++) 9"/{gf3D
{ 7IHWj<
nStartPos = (long)(i*(nFileLength/nStartPos.length)); `toSU>:
} p_qH7W
for(int i=0;i<nEndPos.length-1;i++) H~
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{ l_DPlY
nEndPos = nStartPos[i+1]; fY>\VY$>
} ,u$$w
nEndPos[nEndPos.length-1] = nFileLength; A1i-QG/6
} |ek*wo
} 7%JXVP}A
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//启动子线程 #*w$JH
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; t#kmtJC
for(int i=0;i<nStartPos.length;i++) =MMWcK&
{ yp8 .\.
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), K":-zS
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 7 0KZXgBy_
nStartPos,nEndPos,i); m"u 9AOH k
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); N#|c2n+
fileSplitterFetch.start(); (RGl, x:
} N:=D@x~]
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Il!iqDHz3
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); w:pc5N>we0
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", W&GDE
nEndPos = " + nFileLength); RL($h4d9
// fileSplitterFetch[nPos.length-1].start(); 0\u_\%[
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//等待子线程结束 n_iq85
//int count = 0; )-[X^l
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//是否结束while循环 7v1}8Uk
boolean breakWhile = false; tw^V?4[Miu
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while(!bStop) ]kc]YO7i%R
{
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write_nPos(); \\)3:1X
Utility.sleep(500); 'M YqCfIK
breakWhile = true; aNfgSo05@n
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for(int i=0;i<nStartPos.length;i++) %$Mvq&ZZ
{ >pz/wTOi
if(!fileSplitterFetch.bDownOver) L[rJ7:
{ :Ruj;j
breakWhile = false; 350 y6pVh
break; {{:MJ\_"h_
} Dr<% Lr
} |(Io(e
if(breakWhile) ePB=aCZ
break; 5Gg`+o
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//count++; 7-bU9{5
//if(count>4) R>#T{<<L
// siteStop(); }Li24JK
} BwrMRMq"
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System.err.println("文件下载结束!"); m &c8@-T
} SbrBlP:G
catch(Exception e){e.printStackTrace ();} >e"1a/2%>&
} 4LKOBiEM
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//获得文件长度 :8MpSvCV
public long getFileSize() 7teg*M{
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int nFileLength = -1; cD]{ Nn
try{ ppfBfMX
URL url = new URL(siteInfoBean.getSSiteURL()); |Ax~zk;
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); X|@|ZRN
httpConnection.setRequestProperty("User-Agent","NetFox"); 8x[q[
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int responseCode=httpConnection.getResponseCode(); jja9:$#
if(responseCode>=400) mp%i(Y"vp
{ \"5%w *vl
processErrorCode(responseCode); X{<j%PdC
return -2; //-2 represent access is error #2{ };)
} 5(tOQ%AQ
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String sHeader; YjoN:z`b
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{ >/eQjp?:
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); qbFzA
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//Utility.log(in.readLine()); ]7fqVOiOu
sHeader=httpConnection.getHeaderFieldKey(i); %v4/.4sR,;
if(sHeader!=null) V<?t(_Y
{ 6ZR'1_i6i=
if(sHeader.equals("Content-Length")) x$ ?{)EY
{ {{SeD:hx
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); v.c2(w/P
break; 5! NK
} jx+%X\zokA
} 9#@dQ/*
else X-e)w
break; khyn4
} OtrO"K
} GNT1FR
catch(IOException e){e.printStackTrace ();} W,}HQ
catch(Exception e){e.printStackTrace ();} S6`4&0'
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Utility.log(nFileLength); 8m2-fuJz
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return nFileLength; uy9k^4Cqa
} )R<hYd
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//保存下载信息(文件指针位置) CY<,p$
private void write_nPos() ?*tb|AL(R
{ fj[B,ua
try{ ?
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output = new DataOutputStream(new FileOutputStream(tmpFile)); "Rf8#\Y/<
output.writeInt(nStartPos.length); I?.$
for(int i=0;i<nStartPos.length;i++) I;S[Ft8d
{ 2a3hm8%U
// output.writeLong(nPos); g PU|Gv5
output.writeLong(fileSplitterFetch.nStartPos); KLGhsx35
output.writeLong(fileSplitterFetch.nEndPos); .:B]
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} .nJErC##
output.close(); ?a+tL'D[
} (A}##h
catch(IOException e){e.printStackTrace ();} FYFP6ti
catch(Exception e){e.printStackTrace ();}
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} Ix93/FAn
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//读取保存的下载信息(文件指针位置) hu%UEB
private void read_nPos() }eX zs_
{ \Azl6`Em
try{ 2$.
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DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); yQ?N*'}$
int nCount = input.readInt(); kL 6f^MoL
nStartPos = new long[nCount]; HF"
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nEndPos = new long[nCount]; ?%J{1+hY
for(int i=0;i<nStartPos.length;i++) ? "]fGp6y
{ E)DdiB'Rh
nStartPos = input.readLong(); <03 @c s
nEndPos = input.readLong(); ~@S5*(&8
} WBFG_])
input.close(); g Q%'2m+
} HaXlc8
catch(IOException e){e.printStackTrace ();} ;aExEgTq
catch(Exception e){e.printStackTrace ();} AdxCP\S&
} e; 5n.+m
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private void processErrorCode(int nErrorCode) -yHVydu=
{ D *R F._
System.err.println("Error Code : " + nErrorCode); 2cY7sE068
} -g(&5._,ZW
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//停止文件下载 p&ytUTna
public void siteStop() )eop:!m
{ !:PF |dZ
bStop = true; ~gQ$etPd
for(int i=0;i<nStartPos.length;i++) s,XKl5'+8e
fileSplitterFetch.splitterStop(); -&I%=0q
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} 3&.?9
} t<mT=(zt*
//负责部分文件的抓取 [0U!Y/?6lA
**FileSplitterFetch.java ,rVm81-2
*/ 5<\&7P3y
package NetFox; iK8aj)%Q@
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import java.io.*; ":EfR`A#
import java.net.*; zim]3%b*A;
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public class FileSplitterFetch extends Thread { 12BTZ
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String sURL; //File URL @ de_|*c
long nStartPos; //File Snippet Start Position :c3}J<Z
long nEndPos; //File Snippet End Position q'~?azg:
int nThreadID; //Thread's ID F!OVx<
boolean bDownOver = false; //Downing is over 8##-fv]
boolean bStop = false; //Stop identical c+chwU0W
FileAccessI fileAccessI = null; //File Access interface ( P|Ph
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Hf!o6 o
{ b)RU+9x &
this.sURL = sURL; k?ubr)[)
this.nStartPos = nStart; :#W40rUb
this.nEndPos = nEnd; LN}eD\
nThreadID = id; ]7" W(
fileAccessI = new FileAccessI(sName,nStartPos);//定位 pwAawm
} K0$8t%Z.
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public void run() ;/?M&rX
{ Z]f_?@0
while(nStartPos < nEndPos && !bStop) Y^DS~CrM
{ Si#I^aF`%
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try{ @b[{.mU
URL url = new URL(sURL); ]G.ttfC
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); (3 xCW
httpConnection.setRequestProperty("User-Agent","NetFox"); *ub]M3O
String sProperty = "bytes="+nStartPos+"-"; Ojqbj0E9
httpConnection.setRequestProperty("RANGE",sProperty); AuIb>@a
Utility.log(sProperty); L&V;Xvbu%
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InputStream input = httpConnection.getInputStream(); w@w(AFV9/
//logResponseHead(httpConnection); Sc03vfmo"N
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byte[] b = new byte[1024]; g-`HKoKe
int nRead; 4FSA:]o-
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) rMRM*`Q2
{ OUCLtn\
nStartPos += fileAccessI.write(b,0,nRead); `x%v&>
//if(nThreadID == 1)
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// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); u[nx?!
} /@Qg'Q#
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Utility.log("Thread " + nThreadID + " is over!"); *J[3f]PBmR
bDownOver = true; Bk,:a,
//nPos = fileAccessI.write (b,0,nRead); #ra"(/)
} AX6z4G
catch(Exception e){e.printStackTrace ();} 533n
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} '
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} :|cC7,S
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//打印回应的头信息 #oBM A
public void logResponseHead(HttpURLConnection con) eeKErpj8A
{ DmDsn
for(int i=1;;i++) 7&oT}Z
{ pxm{?eBz
String header=con.getHeaderFieldKey(i); `/ ]Th&(5
if(header!=null) P<<?7_ ??
//responseHeaders.put(header,httpConnection.getHeaderField(header)); g\9I&z~?
Utility.log(header+" : "+con.getHeaderField(header)); "rhU2jT=c
else CjtBQ5
break; qm RdO
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} :cDhqBMNr`
} F3BWi[Xh
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public void splitterStop() PL+r*M%ll
{ Md!L@gX6<
bStop = true; J<K-Yeph
} 3FWl_d~uD
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} lw/zgR#|
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/* ly,3,ok
**FileAccess.java 5Q_T=TL
*//文件访问(定位,写) -P I$SA,
package NetFox; ~Sq!P
import java.io.*; oW0A8_|9
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