/* .}wVM`81z
**SiteFileFetch.java bI_6';hq!
*/ cL]vJ`?Ih
package NetFox; 7<T1#~w4L
import java.io.*; >;$C@
import java.net.*; *WHQ1geI8
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public class SiteFileFetch extends Thread { &$1ifG
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SiteInfoBean siteInfoBean = null; //文件信息Bean y*BS
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long[] nStartPos; //开始位置 &zxqVI$4
long[] nEndPos; //结束位置 pdz_qj!Z
FileSplitterFetch[] fileSplitterFetch; //子线程对象 6/%dD DU
long nFileLength; //文件长度 Cggu#//Z}Q
boolean bFirst = true; //是否第一次取文件 }f~:>N#
boolean bStop = false; //停止标志 k3HPY}-
File tmpFile; //文件下载的临时信息 fAMk<?
DataOutputStream output; //输出到文件的输出流
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) zeHf(N
public SiteFileFetch(SiteInfoBean bean) throws IOException hLv~N}
{ B$Z%_j&
siteInfoBean = bean; Qb.Ve7c
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); XTibx;yd<
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); &}:]uC
if(tmpFile.exists ()) :aIS>6
{ kK,Ne%}a2K
bFirst = false; ,w9:)B7
read_nPos(); =T?:b8yV
} =ObI
else D('
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{ KF%tF4^+|
nStartPos = new long[bean.getNSplitter()]; HGwSsoS
nEndPos = new long[bean.getNSplitter()]; dbE]&w`?d
} b%-S'@ew
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public void run() kL7n`o
{ *%nV<}e^_=
//获得文件长度 h:4Uv}Z
//分割文件 &2P+9j>
//实例FileSplitterFetch SyB2A\A
//启动FileSplitterFetch线程 vGX}zzto
//等待子线程返回 x}tg/`.=z
try{ xsO
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if(bFirst) oy _DYop
{ vOIzfwYG9
nFileLength = getFileSize(); tQ@%3`
if(nFileLength == -1) Qvx[F:#Tk
{ e2dg{n$6"
System.err.println("File Length is not known!"); Jn#05Z
} 5Y3L
else if(nFileLength == -2) Qms,kX
{ G2[?b2)8
System.err.println("File is not access!"); HkL:3 E.
} *6`};ASK
else V?zCON
{ +NT8dd
for(int i=0;i<nStartPos.length;i++) n9w(Z=D\
{ Cd7imj
nStartPos = (long)(i*(nFileLength/nStartPos.length)); :f/T$fa*
} SZ&I4-
for(int i=0;i<nEndPos.length-1;i++) %FhUjHm
{ "G[yV>pxv
nEndPos = nStartPos[i+1]; Bs!F |x(
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nEndPos[nEndPos.length-1] = nFileLength; |b+ZKRW
} >* )fmfY
} %S$+3q%F
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//启动子线程 J/(^Z?/~P!
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; t9\}!{<s
for(int i=0;i<nStartPos.length;i++) +I>V9%%vW_
{ E |K|AdL
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), `Q!#v{
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Yf?hl
nStartPos,nEndPos,i); &*YFK/ ]
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); >oGs0mej
fileSplitterFetch.start(); TCL XO0
} \5pBK
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), U^&,xz$Cg
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); m 5_
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", !zZ3F|+HB
nEndPos = " + nFileLength); crbph.0
// fileSplitterFetch[nPos.length-1].start(); hqW),^\>'
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//等待子线程结束 xh:A*ZI=7
//int count = 0; !Pc&Sg
//是否结束while循环 /_[?i"GW
boolean breakWhile = false; pdySip<
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while(!bStop) 0CpE,gg
{ WS6;ad;|
write_nPos(); ^:u-wr8?{
Utility.sleep(500); Ial"nV0>0
breakWhile = true; I&wJK'GM`
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for(int i=0;i<nStartPos.length;i++) i?:#lbw_
{ 7ND4Booul
if(!fileSplitterFetch.bDownOver) v];P| Fi
{ k!"6mo@rd
breakWhile = false; yXT.]%)
break; 5q;c=oRUj
} .x'?&7#(
} hYbaVE
if(breakWhile) .G-L/*&%
break; @+7CfvM
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//count++; )W/_2Q.
//if(count>4) &Lbh?C
// siteStop(); hplx s#
} OK(xG3T
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System.err.println("文件下载结束!"); pnTz.)'46
} O$7cN\Z
catch(Exception e){e.printStackTrace ();} .#}A/V.-Y
} @:}l a
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//获得文件长度 ^fj30gw7\5
public long getFileSize() >mj WC) U
{ i1 c[Gk.o
int nFileLength = -1; &ZL4/e
try{ /*(&Dmt>
URL url = new URL(siteInfoBean.getSSiteURL()); kkIG{Bw
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); >avkiT2
httpConnection.setRequestProperty("User-Agent","NetFox"); \olY)b[
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int responseCode=httpConnection.getResponseCode(); X!6$<8+1OV
if(responseCode>=400) )"J1ET,z
{ _BoA&Ism
processErrorCode(responseCode); n}C0gt-
return -2; //-2 represent access is error WidLUv
} 1'H!S%fS
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String sHeader; t$b5,"G1
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for(int i=1;;i++) Z=
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{ ;(rK^*`fO
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); :`c@&WF8
//Utility.log(in.readLine()); .hjN*4RY
sHeader=httpConnection.getHeaderFieldKey(i); eH~T PH
if(sHeader!=null) n(.L=VuXn
{ Rq`5ff3,
if(sHeader.equals("Content-Length")) (+}44Ldt
{ `~D{]'j
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); yH9&HFDp
break; o wwWm1@
} gYloY=.Z$'
} 'wWuR@e#&
else .EC~o
break; q{+}0!o
} yyGn<
} LP/SblE
catch(IOException e){e.printStackTrace ();} iba8G]2
catch(Exception e){e.printStackTrace ();} x`I"%pG
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Utility.log(nFileLength); t#%J=zF{
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return nFileLength; 79I"F'
} AmQsay#I_
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//保存下载信息(文件指针位置) KUC%Da3
private void write_nPos() CAmIwAx6;
{ q\<NW%KtX
try{ 2`> (LH
output = new DataOutputStream(new FileOutputStream(tmpFile)); _#uRKy<`N
output.writeInt(nStartPos.length); BU7QK_zT:
for(int i=0;i<nStartPos.length;i++) shO4>Ha
{ (j(9'DjP
// output.writeLong(nPos); ]:m4~0^#-(
output.writeLong(fileSplitterFetch.nStartPos); fAfB.|cd
output.writeLong(fileSplitterFetch.nEndPos); tgHN\@yj
} F~~9/#
output.close();
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} qQ1D }c@
catch(IOException e){e.printStackTrace ();} @, AB2D
catch(Exception e){e.printStackTrace ();} ~M1T
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} g|h;*
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//读取保存的下载信息(文件指针位置) +UX}
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private void read_nPos() ylDfr){
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try{ E^m)&.+'M
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ]\]mwvLT
int nCount = input.readInt(); _@VKWU$$
nStartPos = new long[nCount]; Xn5LrLM&
nEndPos = new long[nCount]; #a'CoJs
for(int i=0;i<nStartPos.length;i++) *Wcq'S
{ dj}P|v/;z
nStartPos = input.readLong(); Z=<D`
nEndPos = input.readLong(); ldc`Y/:{
} '#~Sb8
input.close(); 8%xiHPVg
} =/ \l=*
catch(IOException e){e.printStackTrace ();} QUF1_Sa
catch(Exception e){e.printStackTrace ();} Zm(}~C29
} iR8;^C.aT
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private void processErrorCode(int nErrorCode) = N:5#A
{ L Z3=K`gj
System.err.println("Error Code : " + nErrorCode); U.<a d
} n@S|^cH
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//停止文件下载 e'=#G$S?g
public void siteStop() 5RY rAzQo
{ -Byl~n3*D
bStop = true; v{8r46Y~Z)
for(int i=0;i<nStartPos.length;i++) APU~y5vG (
fileSplitterFetch.splitterStop(); LrV|Y~
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} n.o_._mu2
} x7xQrjE
//负责部分文件的抓取 aDE}'d1qo
**FileSplitterFetch.java I#W J";kqB
*/ '2{60t_A
package NetFox; C4|79UG>s
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import java.io.*; &*~_ "WyU
import java.net.*; ZZ>(o
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public class FileSplitterFetch extends Thread { |lVi* 4za%
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String sURL; //File URL mf2Qu
long nStartPos; //File Snippet Start Position 4>]B8ZxH
long nEndPos; //File Snippet End Position 6h\; U5
int nThreadID; //Thread's ID (T",6 xBSG
boolean bDownOver = false; //Downing is over x0xQFlGk
boolean bStop = false; //Stop identical yeV|j\TJI.
FileAccessI fileAccessI = null; //File Access interface j 2e|
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException s6I/%R3
{ N$cAX^~
this.sURL = sURL; ?C_Y2JY
this.nStartPos = nStart; +^%0/0e
this.nEndPos = nEnd; :n oZ
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nThreadID = id; d*:J0J(
fileAccessI = new FileAccessI(sName,nStartPos);//定位 _No<fz8
} @DyMq3Gt?&
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public void run() 4o( Q+6m
{ qn `
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while(nStartPos < nEndPos && !bStop) ~|`jIqU
{ 1(
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try{ /qXP\ a
URL url = new URL(sURL); .+-7 'ux
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 7*47mJyc
httpConnection.setRequestProperty("User-Agent","NetFox"); ,f[Oy:fr
String sProperty = "bytes="+nStartPos+"-"; 05;J7T<
httpConnection.setRequestProperty("RANGE",sProperty); K )9f\1\
Utility.log(sProperty); 0JLQ.%_
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InputStream input = httpConnection.getInputStream(); {uiL91j.
//logResponseHead(httpConnection);
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byte[] b = new byte[1024]; D}bCMN<
int nRead; $eh>.c'&]
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) E^V4O l<
{ :"Kr-Hm`
nStartPos += fileAccessI.write(b,0,nRead); 1zY"Uxp
//if(nThreadID == 1) k)S'@>n{u
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); U p: M[S
} h=ko_/<
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Utility.log("Thread " + nThreadID + " is over!"); \v([,tiW%
bDownOver = true; f15n ~d
//nPos = fileAccessI.write (b,0,nRead); p}-B>v
} Y/G~P,9
catch(Exception e){e.printStackTrace ();} F2mW<REg{
} g}*F"k4j
} "A&