/* ,puoq{
**SiteFileFetch.java %+=;4tHJ
*/ -R]0cefC<f
package NetFox; Bd <0}
import java.io.*; P*A+k"DU1
import java.net.*; Yu\$Y0 {]
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public class SiteFileFetch extends Thread { s`_EkFw>Gl
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SiteInfoBean siteInfoBean = null; //文件信息Bean {#qUZ z-
long[] nStartPos; //开始位置 dazNwn
long[] nEndPos; //结束位置
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 "t&=~eOe3
long nFileLength; //文件长度 j*<J&/luYZ
boolean bFirst = true; //是否第一次取文件 <7VLUk}
boolean bStop = false; //停止标志 xeSch?}
File tmpFile; //文件下载的临时信息 W|m(Jh[w]
DataOutputStream output; //输出到文件的输出流 46}U+>
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) } +}nrJv
public SiteFileFetch(SiteInfoBean bean) throws IOException hm1s~@oEm
{ Jg;[k
siteInfoBean = bean; @01.Pd
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); iHGVR
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); A.vAk''(}+
if(tmpFile.exists ()) |${4sUR
{ 7.hBc;%2u
bFirst = false; Uv(R^50>
read_nPos(); %xlpOR4
} *'-4%7C`1
else &SE}5ddC7
{ EwzR4,r\M
nStartPos = new long[bean.getNSplitter()]; KVa{;zBwl
nEndPos = new long[bean.getNSplitter()]; E2'Wzrovlo
} -U /)y:k!%
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} x
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public void run() o99ExQ.
{ <{kPa_`'
//获得文件长度 _u[tv,
//分割文件 8OZj24*'DS
//实例FileSplitterFetch <-v
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//启动FileSplitterFetch线程 m[}k]PB>
//等待子线程返回 Ic2?1<I ZA
try{ jw:z2:0~
if(bFirst) S[zvR9AW&
{ ]eKuR"ob0
nFileLength = getFileSize(); CM_hN>%w[
if(nFileLength == -1) 4=^_VDlpd
{ ]o<]A[<
System.err.println("File Length is not known!"); Kz"3ba}KH
} idYB.]Y(
else if(nFileLength == -2) eTa_RO,x
{ ,ErfTg&^
System.err.println("File is not access!"); y|6n:<o
} .G[/4h :.
else G?$@6
{ ='h2z"}\Bn
for(int i=0;i<nStartPos.length;i++) NfvPE ]S
{ :*}Q/]N
nStartPos = (long)(i*(nFileLength/nStartPos.length)); =x8[%+
} \ASt&'E
for(int i=0;i<nEndPos.length-1;i++) c*)T4n[e
{ fkZHy|m
nEndPos = nStartPos[i+1]; F@u7Oel@m
} ]Lub.r
nEndPos[nEndPos.length-1] = nFileLength; }3{eVct#|
} k_7m[o
} ;7P'>j1?U
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//启动子线程 wb$uq/|
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; .g8*K "
for(int i=0;i<nStartPos.length;i++) `9^tuR,
{ |{ N{VK
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), +K1M&(
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), KR>)Ek
nStartPos,nEndPos,i); Iq+N0G<j
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Pf[E..HF*d
fileSplitterFetch.start(); OIP]9lM$nC
} A<+Dx
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 5s[nE\oaG
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 1p}Wj*mc
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", l{[@Ahb}?
nEndPos = " + nFileLength); '0HOL)cIz
// fileSplitterFetch[nPos.length-1].start(); O-(V`BZe
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//等待子线程结束 NIs 7v
//int count = 0; Mh)?A/e
//是否结束while循环 D~C'1C&W
boolean breakWhile = false; Y*NzY*V\
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while(!bStop) <8:h%%$?
{ \l59/ZFan
write_nPos(); :*Wq%Y=
Utility.sleep(500); : "85w#r
breakWhile = true; s)E \
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for(int i=0;i<nStartPos.length;i++) ["3dr@T9Z
{ &&&-P\3
if(!fileSplitterFetch.bDownOver) A8m06
{ 1 $&@wG
breakWhile = false; L_Ok?9$
break; 4'O,xC
} ?9~^QRLT
} ;XN|dq
if(breakWhile) aZmN(AJ8v
break; ,Wlt[T(.;
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//count++; j*.;6}\o
//if(count>4) a}UmD
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// siteStop(); Jy(G
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} GL
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System.err.println("文件下载结束!"); /*#o1W?wQZ
} ;5tOQ&p%v
catch(Exception e){e.printStackTrace ();} Jq/itsg
} ]E/0iM5
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//获得文件长度 yT7$6x
public long getFileSize() 'I$FOH
{ (ghI$oH
int nFileLength = -1;
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try{ -EiTP:A
URL url = new URL(siteInfoBean.getSSiteURL()); J
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); IJ Jp5[w
httpConnection.setRequestProperty("User-Agent","NetFox"); E{\CE1*
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int responseCode=httpConnection.getResponseCode(); OijuOLt
if(responseCode>=400)
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{ X)3(.L
processErrorCode(responseCode); jrQ0-D%M d
return -2; //-2 represent access is error aC,adNub
} Z}S[fN8
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String sHeader; G&*P*f1S
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for(int i=1;;i++) D{+@ ,C7B
{ u$d[&|`>_
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Q a (Sb
//Utility.log(in.readLine()); +?*;#=q
sHeader=httpConnection.getHeaderFieldKey(i); KL_/f
if(sHeader!=null) ,`HweIq(
{ R #wZW&N
if(sHeader.equals("Content-Length")) ,j_js8r
{ E;a,].
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader));
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break; F'K >@y
} cr!8Tp;2A
} aGbG@c8PRi
else 5SY%B#;5G
break; bWo
} kPX+n+$
} B/4M;G~
catch(IOException e){e.printStackTrace ();} 0b{jox\!B
catch(Exception e){e.printStackTrace ();} q=X<QhK
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Utility.log(nFileLength); JK!(\Ae.
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return nFileLength;
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} 3RtVFDIZA"
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//保存下载信息(文件指针位置) j#//U2VdN
private void write_nPos() A]bQUWt2
{ %tVU Rj
try{ (,I:m[0
output = new DataOutputStream(new FileOutputStream(tmpFile)); 21v--wZ
output.writeInt(nStartPos.length); sx#O3*'>1
for(int i=0;i<nStartPos.length;i++) 76w[X=Fv
{ 5sJ>+Rg
// output.writeLong(nPos); )h]+cGM
output.writeLong(fileSplitterFetch.nStartPos); 7z;2J;u`n
output.writeLong(fileSplitterFetch.nEndPos); k{+cFG\C&
} q9vND[BQ
output.close(); 4FaO+Eo,8
} Z|_V ;*
catch(IOException e){e.printStackTrace ();} 4V:W 8k 9D
catch(Exception e){e.printStackTrace ();} x:)H Ii q/
} 6u"wgX]H
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//读取保存的下载信息(文件指针位置) wH|%3@eJ
private void read_nPos() cP?GRMX@}
{ X;!*D
try{ Dl/ C?Fll
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); }uIQ@f`
int nCount = input.readInt(); ?2"g*Bak
nStartPos = new long[nCount]; jemb/:E
nEndPos = new long[nCount]; 5ngs1ZF@
for(int i=0;i<nStartPos.length;i++) Iy_5k8]
{ AZ!/{1 Az
nStartPos = input.readLong(); AW r2Bv
nEndPos = input.readLong(); Pn9".
} lj]M 1zEz&
input.close(); j55_wx@cA
} c^w^'<
catch(IOException e){e.printStackTrace ();} 4pL'c@'
catch(Exception e){e.printStackTrace ();} Cj>HMB}
} &n1Vv_Lb
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private void processErrorCode(int nErrorCode) ]+e
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{ 9Z-2MF
System.err.println("Error Code : " + nErrorCode); 5J`w8[;
} %X_A# 9
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//停止文件下载 )cH\i91
public void siteStop() O]XRalkEM
{ bVcJ/+Yx|
bStop = true; h?TIxo:6/
for(int i=0;i<nStartPos.length;i++) 807+|Ol[
fileSplitterFetch.splitterStop(); I q|'#hs
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} +j: &_
} X8tPn_`x
//负责部分文件的抓取 h>V6}(~;.
**FileSplitterFetch.java 4Y?fbb<
*/ 76T7<.S
package NetFox; ~;oXLCL0})
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import java.io.*; |4DN2P
import java.net.*; N@PuC>
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public class FileSplitterFetch extends Thread { 46vC/
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String sURL; //File URL ddL3wQ
long nStartPos; //File Snippet Start Position ;X+0,K3c
long nEndPos; //File Snippet End Position ubB1a_7
int nThreadID; //Thread's ID rZ,qHM
boolean bDownOver = false; //Downing is over MZ%J
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boolean bStop = false; //Stop identical i@:^b_
FileAccessI fileAccessI = null; //File Access interface -$!r+4|q
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException e_!h>=$%8
{ &</)k|.A6\
this.sURL = sURL; lfBCzxifC
this.nStartPos = nStart; `0ZH=*P
this.nEndPos = nEnd; 9L7z<ntn
nThreadID = id; (w-"1(
fileAccessI = new FileAccessI(sName,nStartPos);//定位 0VvY(j:hp
} "#Z e3Uy\
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public void run() zji9\
{ eLT3b6'"?
while(nStartPos < nEndPos && !bStop) ~V(>L=\V;
{ 8/2Wq~&
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try{ .;31G0<w2
URL url = new URL(sURL); u"5/QB{
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); J4]"@0 ?6
httpConnection.setRequestProperty("User-Agent","NetFox"); Hd4 ~v0eS
String sProperty = "bytes="+nStartPos+"-"; iM!V4Wih6
httpConnection.setRequestProperty("RANGE",sProperty); 7r,GdP .
Utility.log(sProperty); V@+sNM
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InputStream input = httpConnection.getInputStream(); 1<h@^s ;
//logResponseHead(httpConnection); /7B3z}rd
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byte[] b = new byte[1024]; _&(Wz0
int nRead; 8r}tf3xMCM
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) %^W(sB$b
{ \aSc2Ml]3n
nStartPos += fileAccessI.write(b,0,nRead);
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//if(nThreadID == 1) bZSt<cH3
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); =?L16mu1&
} )%/ Ni^
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Utility.log("Thread " + nThreadID + " is over!"); 1V5N)ty
bDownOver = true; [*K9V/
//nPos = fileAccessI.write (b,0,nRead); y=8KNseW|
} gs}&a3d7k
catch(Exception e){e.printStackTrace ();} B$c'^
)
} /slCK4vFc
} H1~9f{
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//打印回应的头信息 [)}`w;#
public void logResponseHead(HttpURLConnection con) UptKN|S&V
{ x15&U\U
for(int i=1;;i++) %eF=;q
{ k FRVW+
String header=con.getHeaderFieldKey(i); ci%$So2#
if(header!=null) WjVm{ 7?{
//responseHeaders.put(header,httpConnection.getHeaderField(header)); [)X( Qtk
Utility.log(header+" : "+con.getHeaderField(header)); R(>
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else 5 3+C;]J
break; ixy:S1pI
} o7tlkSZ
} ,*Wh{)
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public void splitterStop() M G&vduu
{ Cjt].XR@
bStop = true; R8.@5g_
} c ~M'O26bW
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} (eT9N_W
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/* U2Siw
**FileAccess.java ZdhA:}~^E
*//文件访问(定位,写) QeQwmI
package NetFox; uf)!SxT
import java.io.*; Ayw {I#"
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