/* c!b4Y4eJ
**SiteFileFetch.java U4Il1|
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*/ :Oxrw5`=
package NetFox; h(ZZ7(ue
import java.io.*; {"-uaH>,
import java.net.*; 3b~k)t4R
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public class SiteFileFetch extends Thread { I_\j05
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SiteInfoBean siteInfoBean = null; //文件信息Bean x:G uqE
long[] nStartPos; //开始位置 ZPRkk?M}.
long[] nEndPos; //结束位置 [$$i1%c%Z<
FileSplitterFetch[] fileSplitterFetch; //子线程对象 %A%^;3@
long nFileLength; //文件长度 T-0fVTeN
boolean bFirst = true; //是否第一次取文件 EP,lT.u3
boolean bStop = false; //停止标志 Re-4y5f
File tmpFile; //文件下载的临时信息 "H#2
DataOutputStream output; //输出到文件的输出流 8do-z"-
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) U8 '}(
public SiteFileFetch(SiteInfoBean bean) throws IOException TF2'-"2Y
{ h<JV6h :8
siteInfoBean = bean; C`Zz\DNG@
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ><^
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tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); @w?hXK=
if(tmpFile.exists ()) saY":fva
{ c3lU
bFirst = false; t
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read_nPos(); |bDUekjR
} E{*d`n
else _ ZMoPEW
{ Q3T@=z2j%
nStartPos = new long[bean.getNSplitter()]; g{RVxGE7
nEndPos = new long[bean.getNSplitter()]; VB o=*gn,$
} +K {J*
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} },+ &y^
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public void run() *>
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{ ;LD!eWSK,
//获得文件长度 $b OiP
//分割文件 B)*?H=f/
//实例FileSplitterFetch B:;$5PUTc
//启动FileSplitterFetch线程 (l}W\iB'd
//等待子线程返回 '*lVVeSiFw
try{ #TS:|=
if(bFirst) ,v ,#f
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{ @L0xU??"|
nFileLength = getFileSize(); ZOw%Fw4B
if(nFileLength == -1) *3
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{ *MC+i$
System.err.println("File Length is not known!"); qjDt6B^RO
} wNl{,aH@
else if(nFileLength == -2) -c4g;;%
{ h9RL(Kq{
System.err.println("File is not access!"); :J6 xYy$
} &PZ&'N|P
else P.aN4 9`=
{ S\io5|P
for(int i=0;i<nStartPos.length;i++) maTQ0GX
{ >\[/e{Q"
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ;S0Kf{DN2
} H< 51dJn~
for(int i=0;i<nEndPos.length-1;i++) ^pwT8Bp
{ 2fN2!OT
nEndPos = nStartPos[i+1]; ur\<NApT;
} m55|&Ux|
nEndPos[nEndPos.length-1] = nFileLength; Q?xA))0
} SR_<3WW
} ]"ou?ot }
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//启动子线程 4Dy|YH$>S
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; *\gYs{,
for(int i=0;i<nStartPos.length;i++) TAB'oLNp
{ 1
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), sD#*W<
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), m)Ta5w^
nStartPos,nEndPos,i); 3LRBH+Tt
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); y7^E`LKK
fileSplitterFetch.start(); {f"oqry_g
} ~)CGwST[
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Z2a~1BL
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 7w\L<vFm
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", };Pdn7;1G:
nEndPos = " + nFileLength); g~p43sVV
// fileSplitterFetch[nPos.length-1].start(); {'cm;V+
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//等待子线程结束 T{:8,CiW
//int count = 0; `:.a5
//是否结束while循环 t#d{hEr
boolean breakWhile = false; *[Im].
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while(!bStop) *47HN7
{ 0@yw#.j
write_nPos(); Q@ua
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Utility.sleep(500); G,e!!J
breakWhile = true; (1e,9!?
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for(int i=0;i<nStartPos.length;i++) Tm\a%Z`U>
{ O@HL%ha
if(!fileSplitterFetch.bDownOver) QpCTHpZ
{ uN&UYJ'B
breakWhile = false; U0=: `G2l
break; R =kXf/y
}
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} xL [3R
if(breakWhile) mor[AJ
break; +wp !hk&C5
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//count++; U4=m>Ty
//if(count>4) qC6@
// siteStop(); J4%"38l
} #f@}$@
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System.err.println("文件下载结束!"); @4G{L8Q}
} .cm9&&"Z
catch(Exception e){e.printStackTrace ();} o-<XR9,N*
} &'k:?@J[
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//获得文件长度 ";jKTk7
public long getFileSize() n"w>Y)C(X)
{ ' ""s%C+
int nFileLength = -1; :{,k F
try{ cs9"0&JX
URL url = new URL(siteInfoBean.getSSiteURL()); ioBYxbY`
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ^+w1:C 5
httpConnection.setRequestProperty("User-Agent","NetFox"); .On3ZN
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; GEr8_7
int responseCode=httpConnection.getResponseCode(); s14D(:t(
if(responseCode>=400) Vkfc&+
{ G/ H>M%M
processErrorCode(responseCode); qND:LP\_v
return -2; //-2 represent access is error SohNk9u[8
} E|3[$?=R
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String sHeader; .P#t"oW}
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for(int i=1;;i++) =)}Yw)
{ 5/R
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); woa|h"T
//Utility.log(in.readLine()); 5 qMP u|A
sHeader=httpConnection.getHeaderFieldKey(i); N)/7j7c~;
if(sHeader!=null) tzY?LX[3
{ 9a#Y
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if(sHeader.equals("Content-Length")) F. I\?b
{ EMPujik-
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 0ybMI+*
break; BoXPX2:
} =zR9^k
} Gd`s01GKQ
else +TAyCxfmt
break; m=TZfa^r
} F$ckW'V
} 5S[:;o
catch(IOException e){e.printStackTrace ();} x\IuM
catch(Exception e){e.printStackTrace ();} kZ;Y/DH
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Utility.log(nFileLength); Gzp*Vr
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return nFileLength; tkmzOc H
} 3e>U(ES
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//保存下载信息(文件指针位置) v|dt[>G
private void write_nPos() ~Rx`:kQ
{ ^A=2#j~H\
try{ '!`| H 3
output = new DataOutputStream(new FileOutputStream(tmpFile)); 9rIv-&7'm
output.writeInt(nStartPos.length); - _~\d+>w
for(int i=0;i<nStartPos.length;i++) /i
{ _88X-~.
// output.writeLong(nPos); zDBm^ s
output.writeLong(fileSplitterFetch.nStartPos); nchpD@'t
output.writeLong(fileSplitterFetch.nEndPos); wb%4f6i
} Ce~Pms]
output.close(); V+zn`
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} +Ht(_+To1
catch(IOException e){e.printStackTrace ();} _;R#B`9Iu
catch(Exception e){e.printStackTrace ();} ~>Y^?l
} Q3'P<"u
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//读取保存的下载信息(文件指针位置) Md0`/F:+2
private void read_nPos() RRro.r,
{ d6ifJ
try{ ,."wxP2u
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); RU~Pa+H
int nCount = input.readInt(); N'PK4:
nStartPos = new long[nCount]; ~Lq`a@]A
nEndPos = new long[nCount]; % .wx]:o
for(int i=0;i<nStartPos.length;i++) )LNKJe+
{ P`S'F_IN
nStartPos = input.readLong(); !=HxL-`j
nEndPos = input.readLong(); 3BAQ2S}
} A8k $.E
input.close(); k@pEs# a
} t*fH&8(
catch(IOException e){e.printStackTrace ();} 3EH@tlTl
catch(Exception e){e.printStackTrace ();} XjmAM/H4
} Nrq/Pkmy
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private void processErrorCode(int nErrorCode) q^uCZnkb=
{ NZlCn:"
System.err.println("Error Code : " + nErrorCode); [!Djs![O
}
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//停止文件下载 ftQ;$@
public void siteStop() Js.G
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{ +HjSU2
bStop = true; (!?%"e
for(int i=0;i<nStartPos.length;i++) 3HNm`b8G4m
fileSplitterFetch.splitterStop(); i~3\dp
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} @1qdnU
} Nfv`
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//负责部分文件的抓取 .krEfY&
**FileSplitterFetch.java LoOw]@>
*/ z@~mu
package NetFox;
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import java.io.*; 'H"!%y{:i
import java.net.*; ?m9=Me
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public class FileSplitterFetch extends Thread { b2RW=m-
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String sURL; //File URL s#aane
long nStartPos; //File Snippet Start Position xgtx5tg
long nEndPos; //File Snippet End Position ~S<}q6H.
int nThreadID; //Thread's ID i[wnG )
boolean bDownOver = false; //Downing is over :f7:@8
boolean bStop = false; //Stop identical /g8nT1k
FileAccessI fileAccessI = null; //File Access interface Pa=xc>m^
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException $7-S\sDr
{ gc
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this.sURL = sURL; fp`m>}
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this.nStartPos = nStart; n?S)H=
this.nEndPos = nEnd; R*lq.7
nThreadID = id; 9|NF)~Q}'
fileAccessI = new FileAccessI(sName,nStartPos);//定位 G @]n(\7Y
} 'R#MH
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public void run() uH7!)LE#
{ Ef3="}AI;
while(nStartPos < nEndPos && !bStop) e@5w?QzW
{ ? :A%$T
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try{ DYrci?8Ith
URL url = new URL(sURL); #MviO!@
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); |`|zo+aW
httpConnection.setRequestProperty("User-Agent","NetFox"); 9`CJhu
String sProperty = "bytes="+nStartPos+"-"; iAeq%N1(0
httpConnection.setRequestProperty("RANGE",sProperty); \5a;_N[Ed
Utility.log(sProperty); @y6^/'
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InputStream input = httpConnection.getInputStream(); i3)7Qa[
//logResponseHead(httpConnection); |Qpd<L
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byte[] b = new byte[1024]; hVCxwTg^X
int nRead; LaL{
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while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) rKTc6h:)
{ f:AfM f>m
nStartPos += fileAccessI.write(b,0,nRead); X|4Kdi.r@
//if(nThreadID == 1) B->oTC`5
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); J/rF4=j%xy
} <"S`ZOn
umpa!q};
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Utility.log("Thread " + nThreadID + " is over!"); YllW2g:
bDownOver = true; !G<gp4Js+N
//nPos = fileAccessI.write (b,0,nRead); gQeoCBCE
} #UvWS
catch(Exception e){e.printStackTrace ();} cKIA.c}N
} n:}'f-
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} *8/cd0
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//打印回应的头信息 YWDd[\4
public void logResponseHead(HttpURLConnection con) &x@N5j5Q
{ sqj8I"<`
for(int i=1;;i++) rT;_"y}
{ ,0i72J
String header=con.getHeaderFieldKey(i); MB6lKLy6~
if(header!=null) nFefDdP
//responseHeaders.put(header,httpConnection.getHeaderField(header)); @-ir
Utility.log(header+" : "+con.getHeaderField(header)); ,fhwDqR
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else yATXN>]l
break; {axRq'=
} ApcE)mjpc
} d1NKVMeWr
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public void splitterStop() >/.Ae8I)
{ S@ItgG?X
bStop = true; TUQe.oAi
} jz I,B
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} )$O'L7I n&
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/* &hWYw+yH\
**FileAccess.java Q:]v4/MT
*//文件访问(定位,写) }dEf |6_
package NetFox; Slp_o\s$@
import java.io.*; (cp$poo
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public class FileAccessI implements Serializable{ 2p*L~! iM
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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 ,!98VJmr
RandomAccessFile oSavedFile; !!])~+4pP
long nPos; Ft @ZK!'@
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public FileAccessI() throws IOException z~jk_|?|?
{ P_Exh]P
this("",0); 0}\8,U
} ~tB9kLFG
.Txwp?};
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public FileAccessI(String sName,long nPos) throws IOException B\>3[_n
{ x'
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oSavedFile = new RandomAccessFile(sName,"rw"); %;O# y3,
this.nPos = nPos; okBaQH2lUl
oSavedFile.seek(nPos); B,A\/%<
} '~pZj"uy
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public synchronized int write(byte[] b,int nStart,int nLen) -M-y*P)
{ f/i[?
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int n = -1; \>e>J\t:
try{ deutY.7g
oSavedFile.write(b,nStart,nLen); n:JG+1I
n = nLen; i]0$7s9!
} LhKUZX,P8
catch(IOException e) B_0]$D0
^
{ ?xo<Fv
e.printStackTrace (); 3\5I4#S
} }ct*<zj[~u
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return n; <##aD3)
} qjIcRue'"
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} OJ}aN>k
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/* w6'8L s
**SiteInfoBean.java o6S`7uwJ*/
*/ kk/vgte-)e
package NetFox; cqb]LC
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public class SiteInfoBean { ~#iAW@
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private String sSiteURL; //Site's URL }-paGM@'Nd
private String sFilePath; //Saved File's Path fq0[7Yb
private String sFileName; //Saved File's Name \V9);KAOj
private int nSplitter; //Count of Splited Downloading File -257g;
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public SiteInfoBean() ~;nW+S$o
{//nSplitter的缺省值为5 "'6R|<u=:
//default value of nSplitter is 5 2$oGy
this("","","",5); CIf""gL9
} Xd9<`gu
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) -o sxKT:
{ .t{?doOT
sSiteURL= sURL; .n)0@X!
sFilePath = sPath; %gXNWxv
sFileName = sName; Y^uYc}
this.nSplitter = nSpiltter; 8j!(*'J.
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} ] Oe[;<I
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public String getSSiteURL() ,
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{ o`[X _
return sSiteURL; ?a-}1A{
} XBHv V05mv
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public void setSSiteURL(String value) +@K8:}lOW
{ Z!qF0UDj
sSiteURL = value; P+;@?ofB
} =v/x&,Uj@6
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public String getSFilePath() W[j7Vi8v
{ BcD%`vGJ
return sFilePath; e\>g@xE%
} WjMP]ND#c
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public void setSFilePath(String value) Voc&T+A m
{ 9TW
sFilePath = value; -qRO}EF
} ;:pd/\<
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public String getSFileName() WP0{%
{ SvGs?nUU
return sFileName; .:#6dG\0z
} {:9P4<%H
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public void setSFileName(String value) QabYkL5@
{ ;M Z@2CO
sFileName = value; 8RR6f98FF
} yLlAK,5P0o
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public int getNSplitter() gJ>HFid_C
{ Af"vSL
return nSplitter; cZ~\jpK
} ; i><03
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public void setNSplitter(int nCount) 'Kj8X{BSFb
{ 5&r2