/* .sDVBT'%
**SiteFileFetch.java 9m
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*/ e$^ O_e
package NetFox; Ci
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import java.io.*; ^CwzAB
import java.net.*; o5FBqt
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public class SiteFileFetch extends Thread { ^4yFLqrC
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SiteInfoBean siteInfoBean = null; //文件信息Bean A%s"WSx,
long[] nStartPos; //开始位置 vx_v/pD
long[] nEndPos; //结束位置 BI] %$rq
FileSplitterFetch[] fileSplitterFetch; //子线程对象 K G~fDb
long nFileLength; //文件长度 *lIK?" mo
boolean bFirst = true; //是否第一次取文件 `_'I 9,.a
boolean bStop = false; //停止标志 ^kMgjS}R
File tmpFile; //文件下载的临时信息 F+S;u=CKx
DataOutputStream output; //输出到文件的输出流 i- E~ZfJ
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) DP NUm<>
public SiteFileFetch(SiteInfoBean bean) throws IOException q*<Df=+B
{ t$Z#zxX
siteInfoBean = bean; !f\y3p*j
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); E0}jEl/{
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 0Kjm:x9T
if(tmpFile.exists ()) g<Sa{<0
{ .;n<k
bFirst = false; V<@]Iv
read_nPos(); |:tFQ.Z'2
} W/uaNp
else 08S|$_
{ f[!QR
nStartPos = new long[bean.getNSplitter()]; SL/ FMYdd
nEndPos = new long[bean.getNSplitter()]; O(otI-Lc
} j%KLp4J/e
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} A|YqBl
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public void run() INrUvD/*
{ D;|4ZjM-
//获得文件长度 swnov[0
//分割文件 t HPC
//实例FileSplitterFetch g4I&3 M
//启动FileSplitterFetch线程 CV4r31w
//等待子线程返回 vpUS(ztvs
try{ y?M99Vo4?
if(bFirst) 928szUo:
{ h2u>CXD
nFileLength = getFileSize(); rj*4ZA?
if(nFileLength == -1) g0^%X9s
{ G)?O!(_
System.err.println("File Length is not known!"); $_l@k=
} 0bpl3Fh.v
else if(nFileLength == -2) Db=
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{ ZSMOq4Y 9
System.err.println("File is not access!"); %u43Pj
} fdCsn:
else .c+RFX@0
{ a$FELlMv
for(int i=0;i<nStartPos.length;i++) H.Z:at5n
{ 56AaviE C
nStartPos = (long)(i*(nFileLength/nStartPos.length)); Y=4 ,d4uu
} ;/SM^&Y
for(int i=0;i<nEndPos.length-1;i++) K,^{|5'3q
{ \sF}NBNT@
nEndPos = nStartPos[i+1]; Srz.-,2 PF
} !o&Mw:d
nEndPos[nEndPos.length-1] = nFileLength; Q/=L(_1l
} o_EXbS]C
} }
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//启动子线程 w-|i8%X
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ?4_^}B9
for(int i=0;i<nStartPos.length;i++) |jaUVE_2[
{ &|26x
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^C@uP9g
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), L$@^EENS
nStartPos,nEndPos,i); 6$b"tdP
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); p(~>u'c
fileSplitterFetch.start(); +8Zt<snG
} ZsUxO%jP
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :j
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ?ae:9ZcH
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ZQnJTS+ Rd
nEndPos = " + nFileLength); M&y!w
// fileSplitterFetch[nPos.length-1].start(); #=b_!~:%
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//等待子线程结束 ]{nFB3vtB
//int count = 0; ,$sq]_t
//是否结束while循环 Sy'/%[+goJ
boolean breakWhile = false; ev#d1s|<S
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while(!bStop) *6q8kQsz^1
{ czb(&><
write_nPos(); QO7> XHn
Utility.sleep(500); Yq#I#
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breakWhile = true; oFHVA!lqe
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for(int i=0;i<nStartPos.length;i++) 1U~AupHE
{ d^Ra1@0"q2
if(!fileSplitterFetch.bDownOver) #d*mG =
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breakWhile = false; @| %t<{y^I
break; 0d:t$2~C
} ay'=M`uO_
} #2I[F
if(breakWhile) Fkz+Qz
break; R',|Jf=`
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//count++; Cr4shdN34
//if(count>4) {mw,U[C
// siteStop(); ~DPg):cZ
} {j,bV6X
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System.err.println("文件下载结束!"); ~VUNN[
} PFG):i-?
catch(Exception e){e.printStackTrace ();} JQsS=m7Et
} o]MQ)\r
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//获得文件长度 t_3)}
public long getFileSize() 8S@ ~^D
{ @+Berb
int nFileLength = -1; EFf<|v
try{ mh.0%
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URL url = new URL(siteInfoBean.getSSiteURL());
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); gJ c5Y
httpConnection.setRequestProperty("User-Agent","NetFox"); mv SNKS
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int responseCode=httpConnection.getResponseCode(); vp4!p~C{
if(responseCode>=400) 5D-xm$8C
{ 6H VS0
processErrorCode(responseCode); W8yr06{]
return -2; //-2 represent access is error 2[9hl@=%
} |j^>6nE
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String sHeader; emw3cQ
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for(int i=1;;i++) {^"c>'R
{ }N2T/U
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); )`-9WCd&
//Utility.log(in.readLine()); A7+eWg{
sHeader=httpConnection.getHeaderFieldKey(i); r&1N8o
if(sHeader!=null) e@Z(z^V
{ 6N~~:Gt
if(sHeader.equals("Content-Length")) yXppu[=
{ x
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 5U3="L
break; k2<VUeW5
} 2p@Rr7
} Qgo0uuM
else 3UD_2[aqN(
break; f Nm
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} e0j*e7$
} k-Jj k3
catch(IOException e){e.printStackTrace ();} g?^o++
catch(Exception e){e.printStackTrace ();} HP. j.
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Utility.log(nFileLength); zJ3{!E}`v
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return nFileLength; hKQT,
} b&HA_G4
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//保存下载信息(文件指针位置) 2B=yT8
private void write_nPos() [% |i
{ @]Iku 6d-
try{
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output = new DataOutputStream(new FileOutputStream(tmpFile)); *1ku2e]z
output.writeInt(nStartPos.length); #kA/,qyM
for(int i=0;i<nStartPos.length;i++) Sw%=/ g
{ SL pd~ZC?
// output.writeLong(nPos); Z7K;~*
output.writeLong(fileSplitterFetch.nStartPos); vs7Hg)F
output.writeLong(fileSplitterFetch.nEndPos); C[& \Xq
} EtcAU}9
output.close(); KNQX\-=
} b0PF7PEEQ
catch(IOException e){e.printStackTrace ();} oSx]wZZ
catch(Exception e){e.printStackTrace ();} _9Iz'-LgB
} BNQ~O^R0
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//读取保存的下载信息(文件指针位置) IObGmc
private void read_nPos() QC \8Zy
{ dL |D
try{ ,K+K`"Oy
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); (/v(.t
int nCount = input.readInt(); XlV#)JX
nStartPos = new long[nCount]; 8"N<g'Yl,
nEndPos = new long[nCount]; F.c,F R2
for(int i=0;i<nStartPos.length;i++) #J)sz,)(
{ \a<qI
nStartPos = input.readLong(); \gDf&I
nEndPos = input.readLong(); jC@$D*"J
} ou6yi;
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input.close(); @4sv(HyDY
} l<(MC R*
catch(IOException e){e.printStackTrace ();}
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catch(Exception e){e.printStackTrace ();} oa}-=hG
} g9<*+fV
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private void processErrorCode(int nErrorCode) +Z/*=;
{ ?E^~z-
System.err.println("Error Code : " + nErrorCode); ;R@zf1UYA
} "n}J6
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//停止文件下载 :+bQPzL
public void siteStop() ,gUSW
{ &UEr4RK;I
bStop = true; g"`BNI]Qp
for(int i=0;i<nStartPos.length;i++) $!G7u<`na
fileSplitterFetch.splitterStop(); i`z1if6O
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} 1}Tbp_
} ]- " )r
//负责部分文件的抓取 !)?n n3
**FileSplitterFetch.java P5P:_hr
*/ l"W9uS;\T
package NetFox; E<:XHjm
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import java.io.*; 9 ]c2ub7
import java.net.*; g1@zk$
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public class FileSplitterFetch extends Thread { _<6
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String sURL; //File URL 5k)QjZo
long nStartPos; //File Snippet Start Position B:\\aOEj
long nEndPos; //File Snippet End Position Pv17wUB
int nThreadID; //Thread's ID ~pO6C*"
boolean bDownOver = false; //Downing is over yH|[K=?S[
boolean bStop = false; //Stop identical !TA6- ]1
FileAccessI fileAccessI = null; //File Access interface (+`pEDD{X
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException
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{ 5Ev9u),D+v
this.sURL = sURL; 'Ybd'|t{}
this.nStartPos = nStart; t3|If@T
this.nEndPos = nEnd; $sTbFY
nThreadID = id; ~Z9Eb|B
fileAccessI = new FileAccessI(sName,nStartPos);//定位 `O?Kftv*
} V7U&8UPb
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public void run() 9t:F![rg
{ A'vQtlvKA
while(nStartPos < nEndPos && !bStop) ;IZ*o<_
{ VgD z:j
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try{ IFcxyp
URL url = new URL(sURL); 8n+&tBq1
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); \3JZ=/
httpConnection.setRequestProperty("User-Agent","NetFox"); m\o<a|
String sProperty = "bytes="+nStartPos+"-"; %X7R_>.
httpConnection.setRequestProperty("RANGE",sProperty); K+ZJSfO6
Utility.log(sProperty); dw#K!,g
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InputStream input = httpConnection.getInputStream(); BgRfy2:
//logResponseHead(httpConnection); $&&mGD;?K
{; #u~e(W
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byte[] b = new byte[1024]; m?'H7cFR
int nRead; )hs"P%Zg
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 6_]-&&Nr
{ 4Vl_vTz{i
nStartPos += fileAccessI.write(b,0,nRead); eG&\b-%
//if(nThreadID == 1) @ol=gBU
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 2l]*><q|
} @32~#0a
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Utility.log("Thread " + nThreadID + " is over!"); R[KF${X4
bDownOver = true; zmH8^:-x
//nPos = fileAccessI.write (b,0,nRead); jBZlNEw
} QZ?# ixvJ
catch(Exception e){e.printStackTrace ();} ;wo
} > %h7)}U
} % `Q[?(z
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//打印回应的头信息 KZy2c6XO;
public void logResponseHead(HttpURLConnection con) ~puXZCatN
{ jz,Mm,Gi
for(int i=1;;i++) 7k,pUC-w7c
{ ,;;7+|`
String header=con.getHeaderFieldKey(i); 1(%9)).K
if(header!=null) p]h;M
//responseHeaders.put(header,httpConnection.getHeaderField(header)); i7$4i|
Utility.log(header+" : "+con.getHeaderField(header)); @Wgd(Ezd
else Lzmdy0!'
break; H#H@AY3Y
} er@"4R0
} ?QA![
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