/* !n;3jAl&$
**SiteFileFetch.java d%I7OBBx@
*/ `Hw][qy#
package NetFox; Q&0`(okb
import java.io.*; nP[Z6h
import java.net.*; |fyzb=Lg
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public class SiteFileFetch extends Thread { GPni%P#a@0
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SiteInfoBean siteInfoBean = null; //文件信息Bean 3XB`|\:
long[] nStartPos; //开始位置 aoz+T h3
long[] nEndPos; //结束位置 Syseiw
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ]i075bO/
long nFileLength; //文件长度 |11vm#
boolean bFirst = true; //是否第一次取文件 )a0l:jEOc
boolean bStop = false; //停止标志 i`52tH y_
File tmpFile; //文件下载的临时信息 '0~?zP
DataOutputStream output; //输出到文件的输出流 u`wD6&y*
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) /":/DwI'
public SiteFileFetch(SiteInfoBean bean) throws IOException "c} en[
{ &u^]YE{
siteInfoBean = bean; Id^q!4Th9
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); s)E8}-v
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); wEq&O|Vj
if(tmpFile.exists ()) q|%+?j(
{ 8&HBR #
bFirst = false; ]#DCO8Vk
read_nPos(); 3]'ab-,Vp
} U/PNEGuQ
else uv-O`)
{ 1P"{TMd?
nStartPos = new long[bean.getNSplitter()]; 8ZbXGQ
nEndPos = new long[bean.getNSplitter()]; WJ-.?
} Q=%W-
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} bBc<p{
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public void run() k4<28
{ ChUE,)
//获得文件长度 M `q|GY
//分割文件 >WZbbd-
//实例FileSplitterFetch 4x-,l1NMR
//启动FileSplitterFetch线程 :4 z\Q]
//等待子线程返回 9XQE5^
try{ un!v1g9O
if(bFirst) oL R/\Y(
{ S?`0,F
nFileLength = getFileSize(); t\QLj&h}E
if(nFileLength == -1)
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{ _3%:m||,XP
System.err.println("File Length is not known!"); NBasf
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} ~a3u['B
else if(nFileLength == -2) RFS}!_t+|
{ GTfM *b
System.err.println("File is not access!"); 2brY\c
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} *)B \M>
else =$bF[3D
{ i"
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for(int i=0;i<nStartPos.length;i++) [~|k;\2 +
{ [S]q'c)
nStartPos = (long)(i*(nFileLength/nStartPos.length)); UMNNAX
} _~CJitR3
for(int i=0;i<nEndPos.length-1;i++) }m?Ut|
{ SfPQ;s'
nEndPos = nStartPos[i+1]; ;aD~1;q
} 5QXU"kWH
nEndPos[nEndPos.length-1] = nFileLength;
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} l}-k>fug
} D?S|]]Y!q
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//启动子线程 [bo"!Qk%
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 2<n18-|OQ
for(int i=0;i<nStartPos.length;i++) Si~wig2
{ "#0P*3-c
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ?Q=(?yR0]
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), <bCB-lG*Kb
nStartPos,nEndPos,i); #WG;p(?:
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); r^"sZk#
fileSplitterFetch.start(); AriV4 +
} G] tT=X[
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), W2$rC5|
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Z \ @9*
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", k)F!gV#
nEndPos = " + nFileLength); 9dszn^]T
// fileSplitterFetch[nPos.length-1].start(); Xu_1r8-|=b
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//等待子线程结束 ;{iTSsb
//int count = 0; /#_[{lSr?
//是否结束while循环 $`0^E#Nl
boolean breakWhile = false; d1^5r
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while(!bStop) AoxORPp'
{ !m_y@~pV#u
write_nPos(); Z
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Utility.sleep(500); r_'];
breakWhile = true; J$jLGy& '
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for(int i=0;i<nStartPos.length;i++) v,rKuvc'
{ 0_^3
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if(!fileSplitterFetch.bDownOver) Gh{9nM_\"
{ 1Nv qtVC
breakWhile = false; Y3)*MqZlF
break; @Y9tkJIt
} \)MzUOZn
} %3HF_DNOY=
if(breakWhile) ]nxSVKE4p
break; ESS1 L$y
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//count++; FB~IO#E8W
//if(count>4) R\6dvd
// siteStop(); 7.yCs[Z
} ;Q5o38(
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System.err.println("文件下载结束!"); X4bZ4U*
} b^P\Kky
catch(Exception e){e.printStackTrace ();} qs
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} yyVE%e5nl
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//获得文件长度 [&p/7
public long getFileSize() S)^eHuXPI
{ wFL7JwK:G
int nFileLength = -1; 3HndE~_C&
try{ 6ZC~q=my
URL url = new URL(siteInfoBean.getSSiteURL()); 17ynFHMd,
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); T'14OU2N{Y
httpConnection.setRequestProperty("User-Agent","NetFox"); Q6PMRG}/o
//}KWz
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int responseCode=httpConnection.getResponseCode(); AT"!Ys|
if(responseCode>=400) l]5!$N*
{ TzV~I\a|
processErrorCode(responseCode); +Jq~39
return -2; //-2 represent access is error JZ"XrS0?
} @p9YHLxLjQ
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String sHeader; ]7%+SH,RdD
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for(int i=1;;i++) V_H0z
{ g;</ |Z
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); D{iPsH6};5
//Utility.log(in.readLine()); q>dERN&
sHeader=httpConnection.getHeaderFieldKey(i); $7&t`E)qY
if(sHeader!=null) A@
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{ h8? E+0
if(sHeader.equals("Content-Length")) _!E/em
{ 2@$`xPg
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); o<i\1<eI
break; JcI~8;Z@Z~
} [!>DQE
} 9{n?Jy
else Te&5IB-
break; } !RBH(m%
} fdzaM&
} HT=-mwa_]
catch(IOException e){e.printStackTrace ();} |C.[eHe&D
catch(Exception e){e.printStackTrace ();} !1ZrS
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Utility.log(nFileLength); Nd61ns(N
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return nFileLength; b0lZb'
} K._*
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//保存下载信息(文件指针位置) k5]`:k6
private void write_nPos() 8d*W7>rq
{ KPMId`kf
try{ ])uhm)U@
output = new DataOutputStream(new FileOutputStream(tmpFile)); cr<ty"3\
output.writeInt(nStartPos.length); )0p7d:%mV
for(int i=0;i<nStartPos.length;i++) qB44;!(
{ f%5 s8)
// output.writeLong(nPos); Ob>M]udn
output.writeLong(fileSplitterFetch.nStartPos); oV Hh
output.writeLong(fileSplitterFetch.nEndPos); $mq@g
} }KCb5_MDF
output.close(); 3pk `&'
} w.6 Gp;O
catch(IOException e){e.printStackTrace ();} i*-L_!cc:
catch(Exception e){e.printStackTrace ();} GtSvb6UNn
} >,s.!vpK
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//读取保存的下载信息(文件指针位置) tWN hFQ'
private void read_nPos() 1pT-PO3=
{ 3ZEV*=+T5
try{ ;&v~tD7
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); p!]$!qHO(
int nCount = input.readInt(); &mJ
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nStartPos = new long[nCount]; Zn]njf1x
nEndPos = new long[nCount]; xesZ7{ o
for(int i=0;i<nStartPos.length;i++) }E%#g#
{ mzkv/
nStartPos = input.readLong(); //_aIp
nEndPos = input.readLong(); vOKWi:-U
} /degBL+
input.close(); =A< Fcl\Rz
} &>]c"?C*
catch(IOException e){e.printStackTrace ();} '**dD2
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catch(Exception e){e.printStackTrace ();} +>uiI4g
} _R 6+bB$
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private void processErrorCode(int nErrorCode) v3`k?jAaI
{ g*& |Eq/
System.err.println("Error Code : " + nErrorCode); >m-VBo
} ZWH9E.uj
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//停止文件下载 5UgxuuP4
public void siteStop() 1K`7
{ |pA
bStop = true; N#Y|MfLc
for(int i=0;i<nStartPos.length;i++) g]V_)}
fileSplitterFetch.splitterStop(); 5@kNvi
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} @3Lh/&
} fUg<+|v*
//负责部分文件的抓取 RiPxz=kr
**FileSplitterFetch.java hN5?u:
*/ [K=M;$iQ
package NetFox; oE
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import java.io.*; s
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import java.net.*; ,DZoE~
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public class FileSplitterFetch extends Thread { <Pm!#)-g9
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String sURL; //File URL 0'QX*xfa>
long nStartPos; //File Snippet Start Position C+m%_6<
long nEndPos; //File Snippet End Position V 4`
int nThreadID; //Thread's ID /FthT
boolean bDownOver = false; //Downing is over GGQ%/i]:
boolean bStop = false; //Stop identical 6/5Xy69:h
FileAccessI fileAccessI = null; //File Access interface z]%c6ty
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException V'q?+p]
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{ ixY[ HDPq
this.sURL = sURL; iCtDV5
this.nStartPos = nStart; (6crWw{3
this.nEndPos = nEnd; ?]AF?
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nThreadID = id; j6: jN-z
fileAccessI = new FileAccessI(sName,nStartPos);//定位 [2P6XoI#
} }`~n$OVx
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public void run() YZk.{#^ c
{ Ab
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while(nStartPos < nEndPos && !bStop) rQD^O4j R
{ N`HiNb
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try{ bgYUsc*uR
URL url = new URL(sURL); 3oOr*N3R
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); CUN1.i<pk8
httpConnection.setRequestProperty("User-Agent","NetFox"); Z0[d;m*
String sProperty = "bytes="+nStartPos+"-"; }0IeKpu5
httpConnection.setRequestProperty("RANGE",sProperty); E1`TQA
Utility.log(sProperty); EeR} 34
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InputStream input = httpConnection.getInputStream(); O.DO,]Uh
//logResponseHead(httpConnection); w>o/)TTJL
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byte[] b = new byte[1024]; :8`~dj.
int nRead; fC".K
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while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) -wT!g;v;%
{ [MuZ^'dR
nStartPos += fileAccessI.write(b,0,nRead); jV[;e15+
//if(nThreadID == 1) }xry
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); .8->n aj|
} }K5okxio
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Utility.log("Thread " + nThreadID + " is over!"); wX5q=I
bDownOver = true; \wDL oR
//nPos = fileAccessI.write (b,0,nRead); CBv0fQtL
} T%;V_iW-
catch(Exception e){e.printStackTrace ();} {-lpYD^k3
} mITNx^p4f
} ^ |SiqE
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//打印回应的头信息 hbg$u$1`,
public void logResponseHead(HttpURLConnection con) aL_/2/@X8
{ LP=y$B
for(int i=1;;i++) [}M!ez
{ F}7sb#G
String header=con.getHeaderFieldKey(i); cS'{h
if(header!=null) \+#EO%sN1%
//responseHeaders.put(header,httpConnection.getHeaderField(header)); Aj|->Y
Utility.log(header+" : "+con.getHeaderField(header)); vJaWHC$q
else A.Wf6o
break; <gFa@at
} FuBt`H
} p0WUF\"
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public void splitterStop() :09NZ
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{ *V%"q|L8
bStop = true; '.1P\>x!]
} &hO-6(^I
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} =`QYy-b X
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/* `VKFA<T
**FileAccess.java -dixiJ=
*//文件访问(定位,写) UuWIT3W>%
package NetFox; 1oej<67PdJ
import java.io.*; y\Aa;pL)RQ
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public class FileAccessI implements Serializable{ Q?i_Nl/|
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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 5[jcw`
RandomAccessFile oSavedFile; bRxI7 '
long nPos; UHZ&7jfl
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public FileAccessI() throws IOException s#s">hMrI
{ bg i_QB#k\
this("",0); &))d],tJX
} (N9-YP?qm
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public FileAccessI(String sName,long nPos) throws IOException ed,A'S=d
{ 8OZj24*'DS
oSavedFile = new RandomAccessFile(sName,"rw"); HDHG~<s
this.nPos = nPos; &u2;S?7m
oSavedFile.seek(nPos); 7#R)+
} $xWwI(SaB
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public synchronized int write(byte[] b,int nStart,int nLen) e_=K0fFz
{ X<L=*r^C,=
int n = -1; e'K~WNT
try{ Xf`e 4
oSavedFile.write(b,nStart,nLen); ..}P$
n = nLen; xsH1)
} .^wpfS
catch(IOException e) |{ N{VK
{ :0r,.)
e.printStackTrace (); [./FzlA s
} 2`4m"D tA
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return n; pa!BJ]~
} D~C'1C&W
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} q^aDZzx,z
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/* A8m06
**SiteInfoBean.java ok\-IU?
*/ Xq 135/d
package NetFox; .ck?JXg
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public class SiteInfoBean { XKWq{,Ks
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private String sSiteURL; //Site's URL ]E/0iM5
private String sFilePath; //Saved File's Path _*o<<C\E
private String sFileName; //Saved File's Name :H]d1
private int nSplitter; //Count of Splited Downloading File Lwl1ta-
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public SiteInfoBean() k6bct@7
{//nSplitter的缺省值为5 h&'|^;FM
//default value of nSplitter is 5 Z}S[fN8
this("","","",5); _LaG%* R6
} Tx.N#,T|
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) V?Jy
{ v5M4Rs&t
sSiteURL= sURL; T~E;@weR
sFilePath = sPath; <wSJK
sFileName = sName; &Gt{9#
this.nSplitter = nSpiltter; bWo
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} W:i Q&[f
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public String getSSiteURL()
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{ PLz{EQ[cV
return sSiteURL; }+!"mJx@
} FDl/7P`b(
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public void setSSiteURL(String value) q9vND[BQ
{ A;d@NOI#,K
sSiteURL = value;
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} g4^-B
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public String getSFilePath() Iy_5k8]
{ )|=1;L
return sFilePath; WXxnOLJr
} @{@b^tk
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public void setSFilePath(String value) 9y7hJib
{ HB )+.e
sFilePath = value; qXtC7uNj$
} Kz;Ar&^`N
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public String getSFileName() +j: &_
{ _EMXx4J
return sFileName; yM 7{v$X0
} <7y/)b@
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public void setSFileName(String value) #eYYu2ND
{ D<v<
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sFileName = value; &7'=t6
} 1R_@C.I
| K|AUI
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public int getNSplitter() -)%\$z
{ r Hq1%)B
return nSplitter; G739Ne[gL
} %(s|
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public void setNSplitter(int nCount) #_\**%,<
{ 2L^/\!V#
nSplitter = nCount; zecM|S _
} ]pNM~,
} Z3o HOy
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