/* WlU^+ctS
**SiteFileFetch.java m\|I.BUG
*/ p= jD "lq
package NetFox; wI\v5&X-B
import java.io.*; 8C4DOz|
import java.net.*; QbqEe/*$_
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public class SiteFileFetch extends Thread { :
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SiteInfoBean siteInfoBean = null; //文件信息Bean <*0^X%Vf\
long[] nStartPos; //开始位置 Fy8KZWim
long[] nEndPos; //结束位置
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 ;>Y,b4B;
long nFileLength; //文件长度 ,%e.nj9
boolean bFirst = true; //是否第一次取文件 s QfP8}U
boolean bStop = false; //停止标志 a) GLz
File tmpFile; //文件下载的临时信息 *A.E?9pL\
DataOutputStream output; //输出到文件的输出流 HcwqVU
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) qQ[&FjTO`
public SiteFileFetch(SiteInfoBean bean) throws IOException ]&w>p#_C
{ si,fs%D&
siteInfoBean = bean; 3{ i'8
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); +[Nc";Oy
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); -qz;
if(tmpFile.exists ()) -m)N~>{qS
{ 5mdn77F_
bFirst = false; {\
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read_nPos(); ^yg`U(
} i>i@r ;:|
else azKbGS/X
{ k!Nl#.j
nStartPos = new long[bean.getNSplitter()]; bIt%KG{PY6
nEndPos = new long[bean.getNSplitter()]; ~|kre:j9
} '0D2e
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} 6
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public void run() j+NOT`&
{ ((F[]<?
//获得文件长度 1?sR1du,
//分割文件 hK*:pf
//实例FileSplitterFetch z8FeL5.(
//启动FileSplitterFetch线程 yg\bCvL&
//等待子线程返回 =7pLU+ u
try{ FI{9k(
if(bFirst) ,5Jq
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{ #n5q$
nFileLength = getFileSize(); k/hE68<6i
if(nFileLength == -1)
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{ qwJeeax
System.err.println("File Length is not known!"); H/'tSb
} >7.
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else if(nFileLength == -2) ;*ebq'D([
{ U,S&"`a
System.err.println("File is not access!"); :{?8rA5
} C5m6{Oo+-
else \xJTsdd
{ /Ps}IW
for(int i=0;i<nStartPos.length;i++) ujsJ;\c
{ '|Dm\cy
nStartPos = (long)(i*(nFileLength/nStartPos.length)); VXlTA>a }
} bSsX)wHm
for(int i=0;i<nEndPos.length-1;i++) ;i?Ao:]
{ ?XO$9J
nEndPos = nStartPos[i+1]; z%5i ^P
} "&Ym(P
nEndPos[nEndPos.length-1] = nFileLength; }8J77[>/
} T )
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} g-j`Ex%
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//启动子线程 v+ dt1;
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; (%]&Pe]
for(int i=0;i<nStartPos.length;i++) QWG?^T
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .n1]Yk;,1
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), !~PLW] Z4
nStartPos,nEndPos,i); 1^rODfY 0
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); .PBma/w
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fileSplitterFetch.start(); pv1J6
} f@lRa>Z(Fm
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), u! `oKe;
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); %cJ]Ds%V
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", @q2If{Tk
nEndPos = " + nFileLength); ] >-#T
// fileSplitterFetch[nPos.length-1].start(); %tiFx:F+
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//等待子线程结束 Q| >
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//int count = 0; Wo=Q7~
//是否结束while循环 Rr+Y::E
boolean breakWhile = false; KY$6=/?U_
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while(!bStop) *L>gZ`Q
{ `~Nd4EA)2
write_nPos(); NMb`d0;(
Utility.sleep(500); A;Rr#q<
breakWhile = true; oW3{&vfz
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for(int i=0;i<nStartPos.length;i++) j&) "a,f
{ 6KP"F[8I
if(!fileSplitterFetch.bDownOver) 6-C9[[g<
{ 0]3%BgZ(a8
breakWhile = false; Hp;Dp!PLa
break; JK0L&t<
} {#YGor|
} $>zLa_cn|
if(breakWhile) =BO} hk
break; 13(JW
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//count++; xgP/BK2"
//if(count>4) 44axOk!G[/
// siteStop(); TIlBT{A<
} 6(
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System.err.println("文件下载结束!"); Qk?;n F
} #7K&x.w$
catch(Exception e){e.printStackTrace ();} !Tuc#yFw
} gf2<dEff
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//获得文件长度 * Zb-YA
public long getFileSize() [|<2BQX
{ RGy4p)z*+
int nFileLength = -1; }|>mR];
try{ l?E7'OEF:
URL url = new URL(siteInfoBean.getSSiteURL()); (.Yt|
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Q.:SIBP
httpConnection.setRequestProperty("User-Agent","NetFox"); Yy]^_,r
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int responseCode=httpConnection.getResponseCode(); g|_-O"l
if(responseCode>=400) Kj;gxYD>6
{ HH/bBM!
processErrorCode(responseCode); A\J|eSG'$
return -2; //-2 represent access is error pcIJija:
} bf]W_I]B
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String sHeader; {2?o:
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for(int i=1;;i++) .} <$2.
{ J5PXmL
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); boAu
//Utility.log(in.readLine()); `PK1zSr
sHeader=httpConnection.getHeaderFieldKey(i); T^YdAQeE
if(sHeader!=null) iW\cLp "
{ <}x_F)E[t
if(sHeader.equals("Content-Length")) eglcf z%
{ A+i|zo5p=k
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); :/'2@M
break; 3n-~+2l
} 9fR`un)f}
} D>wq4u
else
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break; qTFktJZw
} 3>%oGbo
} 4kZX$ct}
catch(IOException e){e.printStackTrace ();} Z^w11}
catch(Exception e){e.printStackTrace ();} U6V+jD}L]
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Utility.log(nFileLength); 'B&gr}@4O=
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return nFileLength; "@IrBi6
} Ng=XH"ce~
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//保存下载信息(文件指针位置) O^(ji8[l
private void write_nPos() E _d^&{j
{ MU2ufKq4)
try{ GZgu1YR
output = new DataOutputStream(new FileOutputStream(tmpFile)); z/zUb``
output.writeInt(nStartPos.length); r}ZL{uWMW
for(int i=0;i<nStartPos.length;i++) O!#yPSq?
{ &wc%mQV
// output.writeLong(nPos); 8z\v|-%Z
output.writeLong(fileSplitterFetch.nStartPos); F&?&8.
output.writeLong(fileSplitterFetch.nEndPos); =8BMCedH|
} ^gx`@^su
output.close(); /7Z5_q_
} }S84^2J_
catch(IOException e){e.printStackTrace ();} 04{*iS95J
catch(Exception e){e.printStackTrace ();} p&'oJy.P
} e@[9WnxYe
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//读取保存的下载信息(文件指针位置) gaeMcL_^a
private void read_nPos() 8!87p?Mz
{ R_iQLBrd
try{ f4F13n_0X
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); wxw3t@%mNm
int nCount = input.readInt(); hxcRFqX"
nStartPos = new long[nCount]; 9 -7.4!]I
nEndPos = new long[nCount]; ~RdJP'YF-
for(int i=0;i<nStartPos.length;i++) -olD!zKS
{ oCD#Gmr
nStartPos = input.readLong(); &~`Ay4hq
nEndPos = input.readLong(); BK._cDR
} ,CACQhrng
input.close(); r9:Cq
} 2xy
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catch(IOException e){e.printStackTrace ();} ?V6A:8t,
catch(Exception e){e.printStackTrace ();} V'[Lqe,y
} ]z5`!e)L
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private void processErrorCode(int nErrorCode) dN'2;X
{ Jo%5 NXts4
System.err.println("Error Code : " + nErrorCode); .~J}80a/
} dUAZDoLi
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//停止文件下载 7RW5U'B
public void siteStop() Ww8<f$
{ 05_aL` &eb
bStop = true; =2;2_u?
for(int i=0;i<nStartPos.length;i++) Zx&gr|)}
fileSplitterFetch.splitterStop(); 0K/?8[#
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} >^mNIfdE^=
} !ho~@sc{W
//负责部分文件的抓取 ,+`1 /
**FileSplitterFetch.java IK#W80y
*/ "`Y.N$M`k
package NetFox; ~fL:pVp
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import java.io.*; ""LCyKu
import java.net.*; u~kfz*hz
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public class FileSplitterFetch extends Thread { RY8Ot2DWi
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String sURL; //File URL CUz1q*):
long nStartPos; //File Snippet Start Position Snm
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long nEndPos; //File Snippet End Position R.KqTEs<k
int nThreadID; //Thread's ID <zmtVE*>g
boolean bDownOver = false; //Downing is over 0#K?SuY.eN
boolean bStop = false; //Stop identical tG1,AkyZ
FileAccessI fileAccessI = null; //File Access interface Grot3a
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException aI8k:FK"
{ ssdpwn'
this.sURL = sURL; JY$B%R4;]
this.nStartPos = nStart; rU^?Z
this.nEndPos = nEnd; TQ-V61<5
nThreadID = id; 2?=R_&0Q
fileAccessI = new FileAccessI(sName,nStartPos);//定位 2=?/$A9p
} r3~~4Q4XI>
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public void run() 0}(ZW~&1
{ [=Qv?am
while(nStartPos < nEndPos && !bStop) v4X\LsOP
{ }o>6 y>=
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try{ N*d
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URL url = new URL(sURL); m53XN
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); HH_w!_f
httpConnection.setRequestProperty("User-Agent","NetFox"); %O9kq
String sProperty = "bytes="+nStartPos+"-"; (``EBEn
httpConnection.setRequestProperty("RANGE",sProperty); -N'xQ(#n3q
Utility.log(sProperty); \FVm_)
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InputStream input = httpConnection.getInputStream(); z5~{WAAI
//logResponseHead(httpConnection); <:v2N/i
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byte[] b = new byte[1024]; #w2;n@7;X
int nRead; z:m`
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) UkO L7M
{ 4Ji6B)B
nStartPos += fileAccessI.write(b,0,nRead); 8H0d4~Wg
//if(nThreadID == 1) e|ChCvk
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); cP >MsUZWl
} )s @}|`
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Utility.log("Thread " + nThreadID + " is over!"); t:pgw[UJ
bDownOver = true; os=Pr{
//nPos = fileAccessI.write (b,0,nRead); -,;r %7T
} Oa[G
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catch(Exception e){e.printStackTrace ();} U g'y
} wi{qN___
} yrp;G_
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//打印回应的头信息 J;?#Zt]`L
public void logResponseHead(HttpURLConnection con) <r[5 S5y
{ [&6VI?
for(int i=1;;i++) *}yOL
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{ :n1^Xw0q
String header=con.getHeaderFieldKey(i); =(!&8U9
if(header!=null) p&Os5zw;|
//responseHeaders.put(header,httpConnection.getHeaderField(header)); jzRfD3_s
Utility.log(header+" : "+con.getHeaderField(header)); fgmu*\x<