/* E3S0u7Es
**SiteFileFetch.java 7vPGb:y
*/ .HY,'oC.
package NetFox; It/'R-H
import java.io.*; Y~^R^J
import java.net.*; $;ny`^8
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public class SiteFileFetch extends Thread { {y@8E>y5$
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SiteInfoBean siteInfoBean = null; //文件信息Bean 94
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long[] nStartPos; //开始位置 e"sv_$*
long[] nEndPos; //结束位置 #;8VBbc\^
FileSplitterFetch[] fileSplitterFetch; //子线程对象 vOKNBR2
long nFileLength; //文件长度 oo]P}ra
boolean bFirst = true; //是否第一次取文件 (?,jnnub
boolean bStop = false; //停止标志 ESIJ QM-[+
File tmpFile; //文件下载的临时信息 _f>)G3p
DataOutputStream output; //输出到文件的输出流 .@;5"
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) sLTQm*jL
public SiteFileFetch(SiteInfoBean bean) throws IOException qycf;Kl:6
{ vzSjfv
siteInfoBean = bean; Bmt8yR2
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); YT[=o}jS
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ft{i6}
if(tmpFile.exists ()) L?8OWLjRy
{ k{X+Y6'ku
bFirst = false; G^L9[c= ,
read_nPos(); w0sy@OF
} C.uv0
else oGeV!hD
{ rB(Q)N
nStartPos = new long[bean.getNSplitter()]; ,:-^O#
nEndPos = new long[bean.getNSplitter()]; }>,%El/
} u0? TMy.%
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} Q-G8Fo%#,E
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public void run() WyQ8}]1b
{ ,_7m<(/f
//获得文件长度 X>yE<ni
//分割文件 {~g7&+9x*
//实例FileSplitterFetch Z!'kN\z
//启动FileSplitterFetch线程 2.{<C.BK{
//等待子线程返回 l)DcwkIG
try{ hlc g[Qdo*
if(bFirst) %Y|AXxR
{ NX;{L#lQ
nFileLength = getFileSize(); BjjuZN&
if(nFileLength == -1) w}07u5
{ Ut1s~b1
System.err.println("File Length is not known!"); }p)a7xn}
} yVPFH~1@\
else if(nFileLength == -2) WoSKN7*
{ %%wngiz\
System.err.println("File is not access!"); nddCp~NX
} ecvZwL
else qM^y@B2MO
{ 0f+]I=1\
for(int i=0;i<nStartPos.length;i++) y^{4}^u-^
{ oc-o>H
nStartPos = (long)(i*(nFileLength/nStartPos.length)); s1%2({wP
} l<"B[
for(int i=0;i<nEndPos.length-1;i++) G[zy sxd
{ mkBQTQGT
nEndPos = nStartPos[i+1]; .rDao]K
} 8|hi2Qeu,c
nEndPos[nEndPos.length-1] = nFileLength; "4*QA0As
} cZWW[i
} 4l/~::y
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//启动子线程 IL*MB;0>
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 9/#b1NGv
for(int i=0;i<nStartPos.length;i++) hSh^A5
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{ `I|Y7GoUO
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), cIuCuh0I`
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), aH500
nStartPos,nEndPos,i); +$^[r
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); [R~@#I P!
fileSplitterFetch.start(); M&/e*Ta5
} hNp.%XnnZ
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 3VQmo\li
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); oye/tEMG
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", d;r,?/C
nEndPos = " + nFileLength); Z\)P|#L$
// fileSplitterFetch[nPos.length-1].start(); yW"}%)
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//等待子线程结束 xkaed
//int count = 0; 7tY~8gQel
//是否结束while循环 itO1ROmu
boolean breakWhile = false; sQT,@+JEr
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while(!bStop) yN}<l%
{ Z>'hNj)ju
write_nPos(); MB.LHIo
Utility.sleep(500); DsBZ%
breakWhile = true; t{ridA}
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for(int i=0;i<nStartPos.length;i++) 2
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{ @c,=c+-
if(!fileSplitterFetch.bDownOver) @oMl^UYM=
{ 5pE@Ww
breakWhile = false; .Ag)/Xm(?
break; yv5c0G.D
} XToYtdt2
} <,nd]a
if(breakWhile) 7^h*rL9
break; V}G;oz&>)
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//count++; mgEZiAV ?
//if(count>4) =Ajw(I[56
// siteStop(); Cz4l
} M""X_~&I"
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System.err.println("文件下载结束!"); ?kc,}/4
} 7I6&*I
catch(Exception e){e.printStackTrace ();} pkA(\0E8
} tpKQ$)ed
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//获得文件长度 5kj=Y]9\I
public long getFileSize() {E>(%vD
{ :UsNiR=l
int nFileLength = -1; 8DlRD$_:&
try{ of.=n
URL url = new URL(siteInfoBean.getSSiteURL()); &R}2/Mt
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); /vFdhh
httpConnection.setRequestProperty("User-Agent","NetFox"); ]<E\J+5K
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int responseCode=httpConnection.getResponseCode(); xTdh/}
if(responseCode>=400) cU=EXyP%
{ HBgt!D0MZ
processErrorCode(responseCode); :B4X/
return -2; //-2 represent access is error |Iq\ZX%q
} QEq>zuz5;
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String sHeader; ljj}XJQ
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for(int i=1;;i++) pd}af iF
{
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); & Pzr)W(
//Utility.log(in.readLine()); '[Ch8Yf\
sHeader=httpConnection.getHeaderFieldKey(i); Y!nE65
if(sHeader!=null) KZTT2KsYl
{ SNf*2~uq)
if(sHeader.equals("Content-Length")) x-s]3'!L
{ Y-:{a1/RKo
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); sBu- \P#
break; A!!W\Jt
} yi3Cd@t({{
} t[ ^68]
else @{UtS2L
break; l8ZzKb-
} &]H Y:
} 1'[_J
catch(IOException e){e.printStackTrace ();} tdB<
catch(Exception e){e.printStackTrace ();} \*$''`b)j
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Utility.log(nFileLength); 5J8U] :Y)
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return nFileLength; +}0/ %5 =1
} D[ (A`!)
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//保存下载信息(文件指针位置) I HtNaN )
private void write_nPos() c2<JS:!*
{ Qf}b3WEAI
try{
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output = new DataOutputStream(new FileOutputStream(tmpFile)); VKp4FiI6
output.writeInt(nStartPos.length); 0')O4IHH
for(int i=0;i<nStartPos.length;i++) b7h0V4w
{ $@cg+Xrg1
// output.writeLong(nPos); OfGMeN6
output.writeLong(fileSplitterFetch.nStartPos); p+bT{:
output.writeLong(fileSplitterFetch.nEndPos); =E''$b?Em
} 9.qjEe
output.close(); H[&X${ap
} vEIDf{
catch(IOException e){e.printStackTrace ();} Fv"jKZPgzz
catch(Exception e){e.printStackTrace ();} wqLY
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} 8n^v,s >
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//读取保存的下载信息(文件指针位置) y0D="2)
private void read_nPos() oO8V0VE\
{ 7Z+4F=2ff
try{ z tLP {q#
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 4=E9$.3a
int nCount = input.readInt(); SiyZq"
nStartPos = new long[nCount]; ^ LTKX`p
nEndPos = new long[nCount]; \-B8`ah
for(int i=0;i<nStartPos.length;i++) Lx:O Dd
{ 4 u!)QG
nStartPos = input.readLong(); ~ g \GC
nEndPos = input.readLong(); Gn_rf"
} {@c)!%2$
input.close(); xi2!__
} hI{M?LQd
catch(IOException e){e.printStackTrace ();} o%E^41M7E
catch(Exception e){e.printStackTrace ();} n2$(MDdL`
} Ht Z3n"2
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private void processErrorCode(int nErrorCode) P=%'2BQ{{
{
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System.err.println("Error Code : " + nErrorCode); nDvj*lZF
} El$yM.M"
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//停止文件下载 `}YCUm[SI
public void siteStop() 3~7X2}qU
{ .6m%/-whS
bStop = true; 11s*C #
for(int i=0;i<nStartPos.length;i++) D@5AI
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fileSplitterFetch.splitterStop(); '
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} GDgq
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} V~>
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//负责部分文件的抓取 WML%yO\.;
**FileSplitterFetch.java [h>RO55e
*/ V]V~q ]
package NetFox; a.r+>44M
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import java.io.*; I'M,p<B
import java.net.*; G:HPd.ay
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public class FileSplitterFetch extends Thread { :qbbo~U
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String sURL; //File URL *-gd k9
long nStartPos; //File Snippet Start Position _%` )cOr
long nEndPos; //File Snippet End Position tw/~z2G
int nThreadID; //Thread's ID G{,X_MZ%
boolean bDownOver = false; //Downing is over cg-\|H1
boolean bStop = false; //Stop identical 9 -\.|5;:
FileAccessI fileAccessI = null; //File Access interface [f9U9.fR
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException #-wtNM%1#
{ l0^~0xlED
this.sURL = sURL; Gy+/P6
this.nStartPos = nStart; Gf(|?"
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this.nEndPos = nEnd; iB =R
nThreadID = id; '+6SkZ
fileAccessI = new FileAccessI(sName,nStartPos);//定位 p_x@FA(
} nwOT%@nw
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public void run() |#p`mc%f~\
{ L{py\4z'_
while(nStartPos < nEndPos && !bStop) >}tm8|IHoo
{ &&/2oP+z
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try{ h/7m.p]
URL url = new URL(sURL); ^h}xFiAV#
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); bG`aF*10)!
httpConnection.setRequestProperty("User-Agent","NetFox"); dWhki|c
String sProperty = "bytes="+nStartPos+"-"; 9"5J-a'
httpConnection.setRequestProperty("RANGE",sProperty); ev}lb+pr)_
Utility.log(sProperty); uAd4Zz
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InputStream input = httpConnection.getInputStream(); EZ6\pyNB0#
//logResponseHead(httpConnection); >l & N
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byte[] b = new byte[1024]; Ifghyh<d
int nRead;
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while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 8reis1]2S
{ O_yk<
nStartPos += fileAccessI.write(b,0,nRead); q97Z .o
//if(nThreadID == 1) llbf(!
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); F|,_k%QP
} v1s.j2T
n]?KDID;
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Utility.log("Thread " + nThreadID + " is over!"); MGt[zLF9
bDownOver = true; bq mb|mD
//nPos = fileAccessI.write (b,0,nRead); 8|5ttdZ
} z}>q/!q
catch(Exception e){e.printStackTrace ();} ]kXiT Yg
} k,p:!S(bl
} /i'dhiG
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//打印回应的头信息 -@6R`m=>
public void logResponseHead(HttpURLConnection con) ^lB=O
{ kj$Ks2!W
for(int i=1;;i++) Hs}3c
R}
{ k[ {h$
String header=con.getHeaderFieldKey(i); h!k[]bt5
if(header!=null) =l7@YCj5c
//responseHeaders.put(header,httpConnection.getHeaderField(header)); - '<K_e;
Utility.log(header+" : "+con.getHeaderField(header)); I?2S{]!?
else cPFs K*w
break; p_^Jr*Mv
} =;hz,+
} it
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public void splitterStop() ljr?Z,R4
{ U`G
bStop = true; %\i
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} fV b~j ;
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} fD^$ y
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/* Zb p+b;
**FileAccess.java RM\A$.5
*//文件访问(定位,写) K{]9Yo
package NetFox; zWN<"[agc
import java.io.*; c#-o@`Po
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public class FileAccessI implements Serializable{ E79'<;K,zs
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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 =tk O^
RandomAccessFile oSavedFile; QD2;JI2
long nPos; ]0Y5 Z)3:z
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public FileAccessI() throws IOException 5]-q.A5m
{ l2Gtw*i_I
this("",0); $(3mpQAg
} |n*nByL/
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public FileAccessI(String sName,long nPos) throws IOException 4l2/eh]Hc(
{ H
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oSavedFile = new RandomAccessFile(sName,"rw"); \LN!k-c
this.nPos = nPos; -:$#koW
oSavedFile.seek(nPos); >cTSX
} C2X$ bX"
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public synchronized int write(byte[] b,int nStart,int nLen) }0y2k7^]
{ nM<B{AR5^
int n = -1; IBT1If3
try{ j
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oSavedFile.write(b,nStart,nLen); rEoMj)~\4&
n = nLen; bgk+PQ#S-
} (aeS+d x
catch(IOException e) 3Fu5,H EJ
{ [C>>j;q%
e.printStackTrace (); s*g`| E{M
} n|p(Cb#G
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wr) \GJ#>
return n; iImy"$yX{
} SsY:gp_
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} 9I|D"zXn
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/* 85}S8\_u
**SiteInfoBean.java OsrHA
*/ E ',z<S
package NetFox; es6]c%o:t^
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public class SiteInfoBean { kMz*10$gn
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private String sSiteURL; //Site's URL .7<6
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private String sFilePath; //Saved File's Path ?niv}/'%O
private String sFileName; //Saved File's Name ns&3Dh(IVP
private int nSplitter; //Count of Splited Downloading File x@p1(V.
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public SiteInfoBean() {0o,2]o!:
{//nSplitter的缺省值为5 YXlaE=9bn
//default value of nSplitter is 5 /a .XWfu
this("","","",5); v;WfcpWq2
} {hH8+4c7
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) f;`7}7C
{ 2Kmnt(>
sSiteURL= sURL; riu_^!"Z_
sFilePath = sPath; ~p!=w#/
sFileName = sName; !^x;4@Ejm
this.nSplitter = nSpiltter; d(_;@%p1X
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} J?$`Tnx^
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public String getSSiteURL() kZK1{
{ KlGmO;k
return sSiteURL; d1>L&3HKx
} BGrV,h^
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public void setSSiteURL(String value) KX^! t3l6
{ t!&p5wJ*Q
sSiteURL = value; !CUy{nV
} "MPr'3
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public String getSFilePath() 3n)\D<f]#
{ wlEmy.)H
return sFilePath; 2~y<l
} 6sQY)F7p
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public void setSFilePath(String value) 9TUB3x^
{ Ru~;awV?
sFilePath = value;
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} cR6Rb[9 N
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public String getSFileName() 87-z=>IU
{ w gkY\Q
return sFileName; 5`FPv4
} A2%RcKY7
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public void setSFileName(String value) vVFT0_
{ BMH?BRi
sFileName = value; U1=]iG<%
} Ol)M0u
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public int getNSplitter() 303x|y
{ wqF_hs(O
return nSplitter; ~0YRWM ;
} `OHdo$Y9
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public void setNSplitter(int nCount) ja%IGaH;s
{ 2Xqa?ay0>
nSplitter = nCount; 3RP\w~?
} z]R% A:6K
} *@fVog r^
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