/* 17w{hK4o8O
**SiteFileFetch.java rA@|nL{
*/ kV3LFPf>0
package NetFox; ?}EWfsA
import java.io.*; S&;)F|-q
import java.net.*; m}2hIhD9
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public class SiteFileFetch extends Thread { i.7$~}
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SiteInfoBean siteInfoBean = null; //文件信息Bean ETR7%0$r
long[] nStartPos; //开始位置 ?zVcP=p@
long[] nEndPos; //结束位置 dkSd
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 )]Sf|@K]
long nFileLength; //文件长度 PTTUI
boolean bFirst = true; //是否第一次取文件 ]{I>HA5[
boolean bStop = false; //停止标志 y{XNB}E
File tmpFile; //文件下载的临时信息 *$/Go8t4u
DataOutputStream output; //输出到文件的输出流 $jBi~QqOf
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) =c]We:I
public SiteFileFetch(SiteInfoBean bean) throws IOException i?)bF!J
{ ?*<1B
siteInfoBean = bean; U8%IpI;
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); MR,A{X
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); nppSrj?
if(tmpFile.exists ()) J|cw9u
{ er>{#8 P
bFirst = false; .I>CL4_
read_nPos(); #;m^DX QZn
} $lJ!f
else b0tbS[j
{ YYvX@f
nStartPos = new long[bean.getNSplitter()]; CM`Q((
nEndPos = new long[bean.getNSplitter()]; +.$:ZzH#
} 2Ns<lh
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} s,D GFK
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public void run() kjSzuqB
{ -7 EwZRS@9
//获得文件长度 77 ?TRC
//分割文件 sr~VvciIy
//实例FileSplitterFetch `2xt%kC
//启动FileSplitterFetch线程 z3w;W{2Q;V
//等待子线程返回 ;]rj Kc=
try{ !=+;9Ry$z
if(bFirst) Q0xQxz
{ Z(J
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nFileLength = getFileSize(); 8"u.GL.
if(nFileLength == -1) ?w)A`G_
{ i_I`
System.err.println("File Length is not known!"); 475jmQ{q
} zD
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else if(nFileLength == -2) TJ,?C$3
{ F[fs^Q6S$
System.err.println("File is not access!"); Kke
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} U/7jK40
else u R!'v
{ ux[13]yY
for(int i=0;i<nStartPos.length;i++) 'qeUI}[
{ BpF}H^V-
nStartPos = (long)(i*(nFileLength/nStartPos.length)); m^^#3*qa
} ![Vrbe P
for(int i=0;i<nEndPos.length-1;i++) 2J`LZS
{ [c99m:*+
nEndPos = nStartPos[i+1]; sr:hRQ27
} \ow(4O#
nEndPos[nEndPos.length-1] = nFileLength; q?f-h<yRQ
} -BsZw.
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} Mv7tK
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//启动子线程 .;D'
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ^brh\M,:@
for(int i=0;i<nStartPos.length;i++) oK&G
{ pFwe&_u]
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), AUl[h&s
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Q2!RFtXV
nStartPos,nEndPos,i); Q%t
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); wJ7Fnj>u%
fileSplitterFetch.start(); ASNo6dP7
} E7]a#
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), (. ,{x)H
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); [bN_0T.YI
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", <H1e+l{8$
nEndPos = " + nFileLength); V("T9g
// fileSplitterFetch[nPos.length-1].start(); N/E=-&E8
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//等待子线程结束 wee5Nirw6
//int count = 0; b/=>'2f
//是否结束while循环 ?;go5f+X
boolean breakWhile = false; h0VeXUM;.
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while(!bStop) @9MrTP
{ EFs\zWF
write_nPos(); a & 6-QVk
Utility.sleep(500); j!a&l
breakWhile = true; dp:5iuS
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for(int i=0;i<nStartPos.length;i++) f:9qId
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{ L!2Ef4,wAz
if(!fileSplitterFetch.bDownOver) \(1WLP$2U
{ "04:1J`
breakWhile = false; Aac7km
break; [wUJ~~2#
} *0 ;|
} }i\_`~
if(breakWhile) JZD&u6tB
break; c$)!02
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//count++; zc>LwX}<
//if(count>4) 0-U%R)Q
// siteStop(); J5\2`U_FZ
} FsfP^a
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System.err.println("文件下载结束!"); 'ExQG$t
} "ScY'<
catch(Exception e){e.printStackTrace ();} 0&2&F=fOa<
} $H7T|`WI.,
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//获得文件长度 )"^ )Nk
public long getFileSize() Y-*]6:{E
{ ;3sJ7%`v
int nFileLength = -1; )`m/vYKWL
try{ 5U(ry6fI=
URL url = new URL(siteInfoBean.getSSiteURL()); p%CcD]o
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); =]sM,E,n
httpConnection.setRequestProperty("User-Agent","NetFox"); 4)d#dy::\
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int responseCode=httpConnection.getResponseCode(); "H)D~K~*
if(responseCode>=400) Z`'&yG;U
{ XO4r rAYvW
processErrorCode(responseCode); u[coWaPsZ
return -2; //-2 represent access is error ldWr-
} .^uYr^(|[
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String sHeader; K]Q1VfeL=
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for(int i=1;;i++) gz"I=9
{ JA^Y:@<{/
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 4B@L<Rl{\
//Utility.log(in.readLine()); },tn
sHeader=httpConnection.getHeaderFieldKey(i); [Ma
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if(sHeader!=null) U~{sJwB
{ y Ide]
if(sHeader.equals("Content-Length")) wqf^n-Ze
{ sVT\e*4m}
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); =h}IyY@o
break; %%k`+nK~
} k&\ 6SK/
} lnRbvulH
else /'>#1J|TlK
break; '~kAsn*/
} dK?vg@|'
} iY4FOt7\
catch(IOException e){e.printStackTrace ();} NxQ+z^o\
catch(Exception e){e.printStackTrace ();} pL)o@-k#%
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Utility.log(nFileLength); wr;8o*~
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return nFileLength; !3#*hL1fy
} "]D2}E>U;
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//保存下载信息(文件指针位置) -!z,t7!
private void write_nPos() :g=z}7!s
{ Ym"Nj
try{ X'h
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output = new DataOutputStream(new FileOutputStream(tmpFile)); K~Hp%.
output.writeInt(nStartPos.length); @-Js)zcl q
for(int i=0;i<nStartPos.length;i++) m>@ *-*8k
{ O&u[^s/^
// output.writeLong(nPos); a).bk!G
output.writeLong(fileSplitterFetch.nStartPos); Z 2u5n`K
output.writeLong(fileSplitterFetch.nEndPos); 2kU=9W6ND
} Td>Lp=0rU
output.close(); f_GqJ7Gk]
} N_"mC^Vx
catch(IOException e){e.printStackTrace ();} ,
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catch(Exception e){e.printStackTrace ();} 1]vrpJw
} 7ehs+GI
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//读取保存的下载信息(文件指针位置) i@}/KT
private void read_nPos() U[UjL)U
{ !mLYW
try{
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DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); I`e|[k2
int nCount = input.readInt(); J 4E G
nStartPos = new long[nCount]; +iYy^oXxw
nEndPos = new long[nCount]; 7+vyN^XJ"5
for(int i=0;i<nStartPos.length;i++) {qHf%y&[
{ &jHnM^nQ
nStartPos = input.readLong(); F&om^G'U
nEndPos = input.readLong(); Jr4^@]78o<
} p%v+\T2r
input.close(); RvT>{G~
} sOBy)vq?\
catch(IOException e){e.printStackTrace ();} (PmaVwF
catch(Exception e){e.printStackTrace ();} "e\:Cq>\
} /HmD/E\
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private void processErrorCode(int nErrorCode) } 1> i
{ W\? _o@d
System.err.println("Error Code : " + nErrorCode); 7Bhi72&6
} c`(] j
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//停止文件下载 oX9rpTi
public void siteStop() wv8WqYV
{ KC-q]
bStop = true; *VFUC:
for(int i=0;i<nStartPos.length;i++) |-c)OS3#D
fileSplitterFetch.splitterStop(); /~Q2SrYH
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} 'bpx
} _f8<t=R
//负责部分文件的抓取 v]tbs)x;h
**FileSplitterFetch.java QDg\GA8|
*/ \y9( b
package NetFox; @,RrAL}|
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import java.io.*; 9?M><bBX
import java.net.*; \i-HECc"U
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public class FileSplitterFetch extends Thread { pbe"
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String sURL; //File URL lth t'|
long nStartPos; //File Snippet Start Position W`KRaL0^
long nEndPos; //File Snippet End Position j`Xe0U<
int nThreadID; //Thread's ID R&BbXSIDX
boolean bDownOver = false; //Downing is over vt" 7[!O
boolean bStop = false; //Stop identical ptXLWv`
FileAccessI fileAccessI = null; //File Access interface 4A_}:nU
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ROr..-[u
{ Pd@y+|
this.sURL = sURL; *t'qn
this.nStartPos = nStart; TM8WaH
this.nEndPos = nEnd; S"iz
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nThreadID = id; UGNFWZ c
fileAccessI = new FileAccessI(sName,nStartPos);//定位 {]aB3
} &n.7~C]R
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public void run() Htseu`>_$
{ 0i2ZgOJ
while(nStartPos < nEndPos && !bStop) DbdxHuKa>
{ cCd2f>EHw
);*A$C9RA
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try{ 5fK#*(x
URL url = new URL(sURL); Y!C=0&p
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); `gIlS^Q
httpConnection.setRequestProperty("User-Agent","NetFox"); M~Yho".
String sProperty = "bytes="+nStartPos+"-"; o:<gJzg
httpConnection.setRequestProperty("RANGE",sProperty); ,[rh7_
Utility.log(sProperty); `CP}1W>
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InputStream input = httpConnection.getInputStream(); P%8zxU;
//logResponseHead(httpConnection); SbmakNWJ}
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byte[] b = new byte[1024]; iEG`+h'
int nRead; fdIk{o
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop)
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{ =IH z@CU
nStartPos += fileAccessI.write(b,0,nRead); !xm87I
//if(nThreadID == 1) $F!)S
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ^1rw\Zp
} ,
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2 w2JFdm
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Utility.log("Thread " + nThreadID + " is over!"); ~l~ai>/
bDownOver = true; L3^WI(
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//nPos = fileAccessI.write (b,0,nRead); DW^E46k)A
} SrPZ^NF
catch(Exception e){e.printStackTrace ();} -MrEJ
} x?0ZzB),
} s)dN.'5/
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//打印回应的头信息 1=x4m=wV
public void logResponseHead(HttpURLConnection con) x
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{ _@[M0t}g_
for(int i=1;;i++) $~xY6"_}!!
{ w:l/B
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String header=con.getHeaderFieldKey(i); &BnK[Q8X
if(header!=null) F.)b`:g
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 6$qn'K$
Utility.log(header+" : "+con.getHeaderField(header));
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else )J&