/* {PHxm
**SiteFileFetch.java bID 'r}55
*/ xA nAW
package NetFox; 39JLi~j,
import java.io.*; snTj!rV/_
import java.net.*; B @]( ,
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public class SiteFileFetch extends Thread { %@U<|9 %ua
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SiteInfoBean siteInfoBean = null; //文件信息Bean Dyp'a
long[] nStartPos; //开始位置 kTG}>I
long[] nEndPos; //结束位置 YTq>K/
FileSplitterFetch[] fileSplitterFetch; //子线程对象 H7)(<6b,z
long nFileLength; //文件长度 LiJ;A*
boolean bFirst = true; //是否第一次取文件 4EuZe:'X
boolean bStop = false; //停止标志 T7n;Bf
File tmpFile; //文件下载的临时信息 L[+65ce%*
DataOutputStream output; //输出到文件的输出流 +v&+8S`+
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Arz>
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public SiteFileFetch(SiteInfoBean bean) throws IOException A0S6 4(
{ 0; OpT0
siteInfoBean = bean; Yc#o GCt
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); NS=puo
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); R\yw9!ESd
if(tmpFile.exists ()) FFH-Kw,
{ q{c6DCc ]\
bFirst = false; wmY6&^?uS
read_nPos(); jKQnox+=
} e&F,z=XJ}
else LP_!g
{ 1kl4X3q6
nStartPos = new long[bean.getNSplitter()]; Oa7`Y`6
nEndPos = new long[bean.getNSplitter()]; fCZbIt)Eh
} blaxUP:
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} ImklM7A
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public void run() :!3CoC.X|c
{ suPQlU>2sj
//获得文件长度 ]=q?=%H
//分割文件 ctdV4%^{
//实例FileSplitterFetch GC$Hp!H
//启动FileSplitterFetch线程 9+=U&*
//等待子线程返回 Z'WoChjM
try{ ]t7<$L
if(bFirst) 1>57rx"l
{ L4}C%c\p*
nFileLength = getFileSize(); $>5|TG
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if(nFileLength == -1) FL0(q>$*8
{ XkuNLs4
System.err.println("File Length is not known!"); '!{zO"
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} kP6g0,\|a|
else if(nFileLength == -2) 8K6yqc H
{ %dO'kU /-
System.err.println("File is not access!"); #=7~.Y
} FB6`2E%o
else Jan73AOX
{ cl1h;w9s
for(int i=0;i<nStartPos.length;i++) XLg6?Nu
{ 5cgDHs
nStartPos = (long)(i*(nFileLength/nStartPos.length)); }LDDm/$^}
} gAgzM?A1(
for(int i=0;i<nEndPos.length-1;i++) J03yFT,dF
{ LJfd{R1y+
nEndPos = nStartPos[i+1]; cm6cW(x6
} q*?LXKi
nEndPos[nEndPos.length-1] = nFileLength; )@\= pE.H
} ^0ipM/Lg
} 5Ee%!Pk
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//启动子线程 [$;6LFs}
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; m+"?;;s
for(int i=0;i<nStartPos.length;i++) +Q}Y ?([
{ HPg@yx"U
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 68+9^
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), !d&K,k
nStartPos,nEndPos,i); iZwt,)(
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); |.)oV;9
fileSplitterFetch.start(); 2u *o/L+
} 2jOh~-LU
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), lBgf' b3$
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); %'%ej^s-R
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ]j~V01p/e
nEndPos = " + nFileLength); +(`
// fileSplitterFetch[nPos.length-1].start(); b{b2L.
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//等待子线程结束 @vCPX=c
//int count = 0; QDF1$,s4i
//是否结束while循环 .`)\GjDv
boolean breakWhile = false; 1*Yf[;L
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while(!bStop) %kxq" =3
{ ?nn`ud?f
write_nPos(); =%%\b_\L
Utility.sleep(500); &<_*yl p
breakWhile = true; SWNi@
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for(int i=0;i<nStartPos.length;i++) 68[3
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{ lQ<2Vw#Yl
if(!fileSplitterFetch.bDownOver) E5~HH($b
{ +?w 7Nm`
breakWhile = false; 0~iC#lHO
break; (CJiCtAsl`
} `TYQ^Zm
} c*-8h{}
if(breakWhile) h3Nwxj~E
break; J}c57$Z
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//count++; W2D^%;mw
//if(count>4) x1:+M]Da
// siteStop(); HgvgO\`]
} cv=nGFx6
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System.err.println("文件下载结束!"); HJhPd#xCW
} 5+vCuVZ
catch(Exception e){e.printStackTrace ();} 6vbWe@#U/
} &tB|l_p_-p
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//获得文件长度 M#LQz~E
public long getFileSize() Z.am^Q^Y!
{ jJkM:iR
int nFileLength = -1; RrSSAoz1
try{ XSyCT0f08
URL url = new URL(siteInfoBean.getSSiteURL()); "u~l+aW0
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Z4A
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httpConnection.setRequestProperty("User-Agent","NetFox"); dB+x,+%u+
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int responseCode=httpConnection.getResponseCode(); w$n\`rQ
if(responseCode>=400) kT@RA}
{ A%>Ir`I
processErrorCode(responseCode); /=w9bUj5v
return -2; //-2 represent access is error /d=i0E3
} O{ zY(`[
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String sHeader; \kqa4{7 U(
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for(int i=1;;i++) rUEoz |e4a
{ 34-QgE
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); -ZFeE[Z
//Utility.log(in.readLine()); W7>4-gk
sHeader=httpConnection.getHeaderFieldKey(i); Zx,R6@l
if(sHeader!=null) R#i|n<x
{ e:hkWcV
if(sHeader.equals("Content-Length")) DnvJx!#R
{ Rn~FCj,-
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); @P#uH5U
break; oJe9H <
} AN7WMX
} L@2%a'
else /%C6e
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break; 6kuN)
} n)uvN
} ^ j;HYs_
catch(IOException e){e.printStackTrace ();} }c1Vu
catch(Exception e){e.printStackTrace ();} ,oX48Wg_+
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Utility.log(nFileLength); C=(-oI n
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return nFileLength; h^^zR)EVb
} SQ|pH"
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//保存下载信息(文件指针位置) jT"P$0sJAd
private void write_nPos() A!Zjcp|
{ *vv<@+gA
try{ "r @RDw
output = new DataOutputStream(new FileOutputStream(tmpFile)); 0cZyO$.
output.writeInt(nStartPos.length); fiz2544
for(int i=0;i<nStartPos.length;i++) Cj%SW <v|
{ 95Bw;U3E
// output.writeLong(nPos); #q`[(`Bx
output.writeLong(fileSplitterFetch.nStartPos); P7QOlTQI
output.writeLong(fileSplitterFetch.nEndPos); (Z5=GJM?$
} Jfa=#`
output.close(); <HM\ZDo@P
} _6" vPN
catch(IOException e){e.printStackTrace ();} _Z+tb]
catch(Exception e){e.printStackTrace ();} O%5cMz?eU
} #\N?ka}!
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//读取保存的下载信息(文件指针位置) 'c5#M,G~
private void read_nPos() '<~rV
{ 6l&m+!i
try{ )~xL_yW_X
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); I2kqA5>)j
int nCount = input.readInt(); _'<V<OjVM!
nStartPos = new long[nCount]; I7TdBe-
nEndPos = new long[nCount]; jb1OcI%
for(int i=0;i<nStartPos.length;i++) *I%r
{ /tRzb8`
nStartPos = input.readLong(); B%gk[!d}8
nEndPos = input.readLong(); XRXKO>4q
} Je_Hj9#M\d
input.close(); @QI]P{
} Hn)K;?H4
catch(IOException e){e.printStackTrace ();} c'OJodpa
catch(Exception e){e.printStackTrace ();} H6E@C}cyM
} zrk/}b0j
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private void processErrorCode(int nErrorCode) mNN,}nHu
{ dVc;Tt
System.err.println("Error Code : " + nErrorCode); LinARMPv
} 2!f0!<te
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//停止文件下载 t+}@J}b
public void siteStop() y@]4xLB]
{ &N1C"Eov?
bStop = true; &:=
for(int i=0;i<nStartPos.length;i++) udtsq"U_%
fileSplitterFetch.splitterStop(); 3~6F`G
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} C&D]!ZvF
} @iB**zR/
//负责部分文件的抓取 T[a1S ?_*T
**FileSplitterFetch.java /k<*!H]KSg
*/ % \N.m/5
package NetFox; A}C&WT~
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import java.io.*; ;hF >iw
import java.net.*; Lv,~M f1|
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public class FileSplitterFetch extends Thread { . hHt+
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String sURL; //File URL ?# >|P-4
long nStartPos; //File Snippet Start Position ~c
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long nEndPos; //File Snippet End Position ({D.oS
int nThreadID; //Thread's ID COv#dOw
boolean bDownOver = false; //Downing is over :eS7"EG{3
boolean bStop = false; //Stop identical V'c9DoSRI\
FileAccessI fileAccessI = null; //File Access interface ]@l~z0^|[_
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException /r@P\_
{ X ~4^$x
this.sURL = sURL; t(lTXG
this.nStartPos = nStart; s .^9;%@$J
this.nEndPos = nEnd; 2t1 WbP1
nThreadID = id; BdUhFN*
fileAccessI = new FileAccessI(sName,nStartPos);//定位 OW)8Z60
} E1 *\)q
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public void run() {ZbeF#*"
{ h1fJ`WT6,
while(nStartPos < nEndPos && !bStop) [lS'GszA
{ {xEX_$nv
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try{ 4TG|
URL url = new URL(sURL); Uvf-h4^J]:
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); "$0f.FO:i
httpConnection.setRequestProperty("User-Agent","NetFox"); $0LlaN@e
String sProperty = "bytes="+nStartPos+"-"; 6e |
httpConnection.setRequestProperty("RANGE",sProperty); 1{o
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Utility.log(sProperty); H=X>o.iVqi
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InputStream input = httpConnection.getInputStream(); Km+29
//logResponseHead(httpConnection); )yJe h
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byte[] b = new byte[1024]; dUb(C1h
int nRead; uO[4 WZ
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) xR#hU;E}
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nStartPos += fileAccessI.write(b,0,nRead); Om}&`AP};
//if(nThreadID == 1) CdZ;ZR
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _rs#h)
} M?nnpO
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Utility.log("Thread " + nThreadID + " is over!"); &-cI|
bDownOver = true; Iu1P}R>C
//nPos = fileAccessI.write (b,0,nRead); 7/*;rT
} X]1ep
catch(Exception e){e.printStackTrace ();} t9K.Jc0
} pY8+;w
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} (O`=$e
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//打印回应的头信息 -w@fd]g
public void logResponseHead(HttpURLConnection con) Zfb:>J@h6
{ "{V,(w8Dt
for(int i=1;;i++) |LNXu
{ 2>EIDRLJ-
String header=con.getHeaderFieldKey(i); yY"%6k,ZB
if(header!=null) (nE$};c<b2
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 3ZB;-F5v
Utility.log(header+" : "+con.getHeaderField(header)); 6]rrj
else LXXxwIBS
break; xxV{1, H2
} *Lh0E/5
} <0kRky$
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public void splitterStop() 2j"%}&
{ vuAAaKz
bStop = true; 3Q;^X(Ml*
} tICxAp:
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} &
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