/* e/6WhFN#
**SiteFileFetch.java 8ysU.5S
*/ N~;=*)_VH
package NetFox; oA(jtX[(
import java.io.*; Gk;==~
import java.net.*; 1U;je,)
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public class SiteFileFetch extends Thread { y5kqnibh@
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SiteInfoBean siteInfoBean = null; //文件信息Bean |+~CdA
long[] nStartPos; //开始位置 Pg{Dy>&2`I
long[] nEndPos; //结束位置 pZ/x,b#.
FileSplitterFetch[] fileSplitterFetch; //子线程对象 7
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long nFileLength; //文件长度 C;0H _
boolean bFirst = true; //是否第一次取文件 YjdCCju
boolean bStop = false; //停止标志 b*',(J94
File tmpFile; //文件下载的临时信息 RgHPYf{
DataOutputStream output; //输出到文件的输出流 9.m_3"s
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) _"&b%!
public SiteFileFetch(SiteInfoBean bean) throws IOException |P$tLOrG
{ S)iv k x
siteInfoBean = bean; o|>2X[T
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); &$lz@Z
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ^o,P>u!9
if(tmpFile.exists ()) @.yp IE\
{ DxdiXf[j
bFirst = false; Wrf('
read_nPos(); :XxsD D
} S;kI\;
else #~ ^#%G
{ yd$_XWp?\
nStartPos = new long[bean.getNSplitter()]; \EuMzb"G9p
nEndPos = new long[bean.getNSplitter()]; hk3}}jc
} 1\z5[
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public void run() mHrt)0\_
{ sMlY!3{Ix
//获得文件长度 +)k%jIi!
//分割文件 0-M.>fwZ=
//实例FileSplitterFetch %JeT,{
//启动FileSplitterFetch线程 "_WOtJr
//等待子线程返回 rz+)z:u
try{ ~~!iDF\
if(bFirst) bW\OKI1
{ HJ?p,V q5_
nFileLength = getFileSize(); 8fRk8
if(nFileLength == -1) I(y:Td
{ X:+lD58
System.err.println("File Length is not known!"); FpN >T
} N9QHX
else if(nFileLength == -2) |re)]%A?Fu
{ f40 xS7-Q0
System.err.println("File is not access!"); i%w[v_j
} j;6kN-jx
else ]awu7}C9Z
{ C +S
for(int i=0;i<nStartPos.length;i++) Mhp6,JL
{ ,7-@eZ
nStartPos = (long)(i*(nFileLength/nStartPos.length)); wXI6KN-
} ^h
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for(int i=0;i<nEndPos.length-1;i++) DdDwMq
{ }GI8p* ]o=
nEndPos = nStartPos[i+1]; t)o!OEnE
} t M?3oO
nEndPos[nEndPos.length-1] = nFileLength; :j feY
} uU_lC5A|
} ;%wQnhg
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//启动子线程 |:)UNb?R"O
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; <4UF/G)
for(int i=0;i<nStartPos.length;i++) |uL"/cMW7
{ )vWI{Q]r
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), DvL/xlN
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), bDK%vx!_
nStartPos,nEndPos,i); f4{O~?=
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); a2Q_K2t
fileSplitterFetch.start(); l@C39VP
} X'[93
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ]1YyP
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); @ px4[
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Igb@aGA
nEndPos = " + nFileLength); wP-BaB$_
// fileSplitterFetch[nPos.length-1].start(); +7%}SV 2)
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//等待子线程结束 W[ZW=c
//int count = 0; lJ y\Ky(*
//是否结束while循环 yex4A)n9"'
boolean breakWhile = false; zNg8Oq&
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while(!bStop) m~$S ]Wf
{ 3/d`s0O
write_nPos(); (>.+tq}
Utility.sleep(500); y*6-?@
breakWhile = true; h4N%(?7
? |}%A9
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for(int i=0;i<nStartPos.length;i++) O C qI
{ 9pY`_lxa>
if(!fileSplitterFetch.bDownOver) {Kdr-aC
{ H6fR6Kr4j
breakWhile = false; )cF1?2
break; cwK+{*ZH/
} L~Hgf/%5
} 4=b{k,kzgA
if(breakWhile) Td|x~mZv:
break; aC9PlKI
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//count++; Hf^Tok^6@]
//if(count>4) VlLc[eVV
// siteStop(); \Gzo^w
} VOmWRy"L
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System.err.println("文件下载结束!"); IQ9jTkW l
} #!h +K"wX
catch(Exception e){e.printStackTrace ();} pbM"tr_A{
} bM%c*_$F7
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//获得文件长度 *`(/wE2v]
public long getFileSize() !edgziuO
{ m4@f&6x
int nFileLength = -1; #h#Bcv0 Z
try{ $ZQ?E^> B
URL url = new URL(siteInfoBean.getSSiteURL()); S dI/
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); lQ}e"#<
httpConnection.setRequestProperty("User-Agent","NetFox"); rX8EXraO
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int responseCode=httpConnection.getResponseCode(); CCX!>k]
if(responseCode>=400) l5jW`cl1
{ D(GAC!|/]
processErrorCode(responseCode); 0M?nXHA[
return -2; //-2 represent access is error tv_Cn
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} HxVQeyOR
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String sHeader; ~'4:{xH
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for(int i=1;;i++) z"eh.&T
{ h= 3156M
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); lRn6Zh
//Utility.log(in.readLine()); bW`@9 =E
sHeader=httpConnection.getHeaderFieldKey(i); #0-!P+c[
if(sHeader!=null) %5_eos&<^)
{ V.IgEE]
if(sHeader.equals("Content-Length")) cZRLYOC
{ Z?%j5G=4w
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ]`D(/l'
break; 5k`[a93T
} "9[K
} S?{|qlpy
else VA _O0y2
break; Ru?Ue4W^b
} pGi "*oZD
} u.gh04{5
catch(IOException e){e.printStackTrace ();} NgKbf vt
catch(Exception e){e.printStackTrace ();} EX>|+zYL
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Utility.log(nFileLength); h^P>pI~
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return nFileLength; #R|M(Z">q
} W%09.bF
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//保存下载信息(文件指针位置) +G&h
private void write_nPos() Y*``C):K%
{ $JTy`g0>x
try{ =JyYU*G4
output = new DataOutputStream(new FileOutputStream(tmpFile)); J+&AtGq]u
output.writeInt(nStartPos.length); 1vu4}%nD
for(int i=0;i<nStartPos.length;i++) )J_!ZpMC
{ Q8M&nf
// output.writeLong(nPos); r2.87
output.writeLong(fileSplitterFetch.nStartPos); &a8#qv"l
output.writeLong(fileSplitterFetch.nEndPos); ^ h^2='p
} n?pCMS|
output.close(); .jr1<LE
} ;,'!
catch(IOException e){e.printStackTrace ();} UhY
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catch(Exception e){e.printStackTrace ();} N|Ua|^
} i#1T68y}
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//读取保存的下载信息(文件指针位置) |.:O$/ Tt[
private void read_nPos() %@Ks<"9
{ ,-c(D-&
try{ S:vv*5
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); *@G4i
int nCount = input.readInt(); ;lX:EU
nStartPos = new long[nCount]; Ph]e\
nEndPos = new long[nCount]; |gxU;"2`5~
for(int i=0;i<nStartPos.length;i++) FTCp3g
{ GQ|kcY=
nStartPos = input.readLong(); B0 q![
nEndPos = input.readLong(); Eg-b5Z);
} 2I ?HBz1v
input.close(); =]xNpX)
} M=o,Sav5*
catch(IOException e){e.printStackTrace ();} UXQ{J5Ox+
catch(Exception e){e.printStackTrace ();} h#]}J}si
} OM!ES%c,
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private void processErrorCode(int nErrorCode) >w
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{ 4N$svA
System.err.println("Error Code : " + nErrorCode); mu"]B]
}
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//停止文件下载 0M8JE9 Kx
public void siteStop() [p o+a@ %
{ & p_;&P_
bStop = true; 5)$U<^uy
for(int i=0;i<nStartPos.length;i++) Go`omh
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fileSplitterFetch.splitterStop(); 'hya#rC&(
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} ['s_qCA[
} m]"YR_
//负责部分文件的抓取 ['R=@.
**FileSplitterFetch.java !%s7I^f*
*/ 3gabk/
package NetFox; .k*2T<p$rC
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import java.io.*; iT5H<uS
import java.net.*; b%PVF&C9W
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public class FileSplitterFetch extends Thread { jQ^Ib]"K
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String sURL; //File URL =oh6;Ojt
long nStartPos; //File Snippet Start Position I^ >zr.zA
long nEndPos; //File Snippet End Position "mH^Owai
int nThreadID; //Thread's ID .86..1
boolean bDownOver = false; //Downing is over 3\WES!
boolean bStop = false; //Stop identical ffB]4
FileAccessI fileAccessI = null; //File Access interface a<o0B{7{BM
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException A!Yqj~
{ CTP%
this.sURL = sURL; n=>Gu9`
this.nStartPos = nStart; C {,d4KG
this.nEndPos = nEnd; >L;O, {Px-
nThreadID = id; 3AL.UBj&}
fileAccessI = new FileAccessI(sName,nStartPos);//定位 "Jwz.,Y\
} /<2_K4(-{4
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public void run() a,E;R$[!
{ n$?oZ*;
while(nStartPos < nEndPos && !bStop) bc"N
{ a;zcAeX
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try{ jl@8pO$
URL url = new URL(sURL); W!(Q_B
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); cs5Xd
httpConnection.setRequestProperty("User-Agent","NetFox"); K%k,-
String sProperty = "bytes="+nStartPos+"-"; Zk[#BUA
httpConnection.setRequestProperty("RANGE",sProperty); **"P A8
Utility.log(sProperty); :Rn9rdX
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InputStream input = httpConnection.getInputStream(); PA/6l"-`3
//logResponseHead(httpConnection); O(d'8`8
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byte[] b = new byte[1024]; 6\K)\
int nRead; a=O!\J
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ivq4/Y]-X
{ g;h&Xkp
nStartPos += fileAccessI.write(b,0,nRead); rij[ZrJ
//if(nThreadID == 1) ^PI49iB
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos);
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} 3C2>
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Utility.log("Thread " + nThreadID + " is over!");
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bDownOver = true; -{h[W bf
//nPos = fileAccessI.write (b,0,nRead); M@\'Y$)Y{
} hA8 zXk/'8
catch(Exception e){e.printStackTrace ();} nM`) `!/
} f+V':qz
} >`:+d'Jv0
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//打印回应的头信息 "x)DE,
public void logResponseHead(HttpURLConnection con) ]YP?bP,:
{ K5SO($
for(int i=1;;i++) m"R(_E5
{ f#5JAR
String header=con.getHeaderFieldKey(i); 3_$eQ`AAA
if(header!=null) o__q)"^~-
//responseHeaders.put(header,httpConnection.getHeaderField(header)); ZAZCvN@5
Utility.log(header+" : "+con.getHeaderField(header)); tOw
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else 3p4?-Dd|_$
break; n lW&(cH
} 1RA$hW@}
} o2
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public void splitterStop() i1\2lh$
{ 7VcVI? ?
bStop = true;
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} 4Z}{hc\J
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} @'@6vC
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/* G:`Jrh
**FileAccess.java v\,%)Z/
*//文件访问(定位,写) 2p>SB/
package NetFox; OL5HofgNm
import java.io.*; 9
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public class FileAccessI implements Serializable{ k &iDJt
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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 *`Xx _
RandomAccessFile oSavedFile; NxO^VUD
long nPos; ?VQLY=?
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public FileAccessI() throws IOException AUsQj\Nm%
{ 2pa3}6P+
this("",0); 3n(gfQo-o
} ++DQS9b{
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public FileAccessI(String sName,long nPos) throws IOException `(/saq*
{ =4<S8Cp
oSavedFile = new RandomAccessFile(sName,"rw"); 1] Q2qs
this.nPos = nPos; ]/Yy-T#@
oSavedFile.seek(nPos); 'z}M[h
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} $?J+dB
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public synchronized int write(byte[] b,int nStart,int nLen) a`b zFu{
{ i4zV(
int n = -1; z<%g
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try{ hr4ye`c j
oSavedFile.write(b,nStart,nLen); B$TChc3B
n = nLen; 6w"( y~c1
} 6QLQ1k`
catch(IOException e) ~,*YmB=Z
{ ? x"HX|n
e.printStackTrace (); qJ+52U|z
} Z%5nVsm:G
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return n; ]osx.
} 6L,lq;
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} %U5P}
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/* &{E`=4T2
**SiteInfoBean.java wD6!#t k
*/ P}hY{y'
package NetFox; @q+cmJKv
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public class SiteInfoBean { J1tzHa6
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private String sSiteURL; //Site's URL <mZrR3v'D
private String sFilePath; //Saved File's Path eu}Fd@GO
private String sFileName; //Saved File's Name &nqdl+|G*
private int nSplitter; //Count of Splited Downloading File }PI35i1!t
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public SiteInfoBean() HDF"]l;
{//nSplitter的缺省值为5 \E$1lc
//default value of nSplitter is 5 ovd^,?ib
this("","","",5); Z
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} fJLf7+q
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) _W0OM[
{ {*QvC
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sSiteURL= sURL; Opv1B2
sFilePath = sPath; xLx"*jyL
sFileName = sName; oGm1d{_-O
this.nSplitter = nSpiltter; })20Zld}a
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} $sEB'>:
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public String getSSiteURL() /Q?~Q0{)es
{ }{ n\tzR
return sSiteURL; TdQ]G2
} [{`)j
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public void setSSiteURL(String value) {Q)dU-\
{ su&t7rJ
sSiteURL = value; ZA0i)(j*Mn
} 1Gsw-a;a
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public String getSFilePath() >;)2NrJV
{ %yp5DD}|
return sFilePath; 9#uIC7M
} wW-A b
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public void setSFilePath(String value) qxfLfgu^
{ OB~C} '^$
sFilePath = value; *C\(wL
} ~L bS~_\C=
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public String getSFileName() ,yICNtP
{ GM](=|F
return sFileName; 1Ao6y.S
} U;g S[8,p
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public void setSFileName(String value) !6H uFf
{ OUzR@$
sFileName = value; 9JPEj-3`g
} qe$33f*
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public int getNSplitter() 1AF%-<`?s
{ |jT2W
return nSplitter; $Jp~\_X
} HY ;9?KJ'
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public void setNSplitter(int nCount) T~Ly^|Ihz
{ ;L~p|sF
nSplitter = nCount; abi[jxCG
} _ 5"+Dv
} @QdnjXII*
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/* (wuaxo:
**Utility.java /[K_
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