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**SiteFileFetch.java L6<.>\^Z"
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package NetFox; w=JO$7
import java.io.*; icS%])3LF
import java.net.*; ?VnA
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public class SiteFileFetch extends Thread { =[5F~--Tf
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SiteInfoBean siteInfoBean = null; //文件信息Bean q#D-}R_RN
long[] nStartPos; //开始位置 BRSIg]
long[] nEndPos; //结束位置 inQ1$
FileSplitterFetch[] fileSplitterFetch; //子线程对象 {+Zj}3o
long nFileLength; //文件长度 ]"q9 ~
boolean bFirst = true; //是否第一次取文件 V?t56n Y}
boolean bStop = false; //停止标志 i=3~ h Zl
File tmpFile; //文件下载的临时信息 c6-~PKJL
DataOutputStream output; //输出到文件的输出流 9 n0?0mk
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) -,:^dxE'
public SiteFileFetch(SiteInfoBean bean) throws IOException }ZqnsLu[)
{ b,h@.s
siteInfoBean = bean; }jdMo83
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); @qUgp*+{
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); +-2W{lX
if(tmpFile.exists ()) '<=77yDg
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bFirst = false; tW-wO[2
read_nPos(); -8zdkm8k
} tEuVn5
else uE &/:+
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{
nStartPos = new long[bean.getNSplitter()]; zy'e|92aO
nEndPos = new long[bean.getNSplitter()]; E5iNuJj=f
} -sqd?L.p
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} @js`$
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public void run() zQ~N(Jj?h
{ _~Id~b
//获得文件长度 GHWt3K:*w
//分割文件 mE"(d*fe'
//实例FileSplitterFetch :@@aIFRv
//启动FileSplitterFetch线程 *q-VY[2
//等待子线程返回 (l+0*o,(
try{ D]=V6l=
if(bFirst) b9R0"w!ml
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nFileLength = getFileSize(); w<LV5w+
if(nFileLength == -1) h~pQ
{ FFtB#
System.err.println("File Length is not known!"); ZHM NG~!
} )k[{re
else if(nFileLength == -2) Xl,707
{ %`bn=~T^
System.err.println("File is not access!"); \RS0mb
} )tm%0z7R
else O$ARk+
{ }v xRjO,
for(int i=0;i<nStartPos.length;i++) gySl.cxt
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); f
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for(int i=0;i<nEndPos.length-1;i++) V}h
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nEndPos = nStartPos[i+1]; M{t/B-'4
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nEndPos[nEndPos.length-1] = nFileLength; v%muno,
}
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//启动子线程 1\aV4T
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; K BlJJH`z{
for(int i=0;i<nStartPos.length;i++) /$d#9Uv
{ PDpuHHB
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), GY rUB59
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ly`\TnC
nStartPos,nEndPos,i); cTja<*W^xv
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); KFBBqP
fileSplitterFetch.start(); *X!+wK-+
} Gvl,M\c9-
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 4axuE]
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); t>vr3)W
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", G0u
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nEndPos = " + nFileLength); *|OUd7P:hU
// fileSplitterFetch[nPos.length-1].start(); BsR3$
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//等待子线程结束 ,f~)CXNT?
//int count = 0; kl|m @Nxp
//是否结束while循环 KwY6pF*
boolean breakWhile = false; 8/@*6J
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while(!bStop) *XI-
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write_nPos(); x<5;#
Utility.sleep(500); 4D[(X=FSU
breakWhile = true;
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for(int i=0;i<nStartPos.length;i++) 79 \SbB
{ ]P2Wa
if(!fileSplitterFetch.bDownOver) F8J\#PW
{ [+!~RV_
breakWhile = false; !jg<
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break; -n:;/ere7-
} g*WY kv
} *|,ye5"
if(breakWhile) lQL/I[}
break; B$G9#G6pZ
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//count++; ?NxaJ^
//if(count>4) |[@v+koq
// siteStop(); 0?''v>%
} >CYz6G j
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System.err.println("文件下载结束!"); ?]\v%[ho
} v<ati c
catch(Exception e){e.printStackTrace ();} nFjaV`6`@
} 2UMX%+ "J
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//获得文件长度 2E.D0E Cu
public long getFileSize() r@CbhD
{ qhmA)AWG>
int nFileLength = -1; #TIlM]5%
try{ s,j=Kym%
URL url = new URL(siteInfoBean.getSSiteURL()); L-|u=c-6
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); E8.1jCL>{"
httpConnection.setRequestProperty("User-Agent","NetFox"); o;v_vCLO
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int responseCode=httpConnection.getResponseCode(); SpMHq_MLM
if(responseCode>=400) (/|f6_9!
{ *X2dS
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processErrorCode(responseCode); RaA7 U
return -2; //-2 represent access is error H284
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} AQs_(LR
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String sHeader; |iVw7M:
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for(int i=1;;i++) 5r^u7k
{ 2SYV2
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); nC\LDeKc
//Utility.log(in.readLine()); N#^o,/
sHeader=httpConnection.getHeaderFieldKey(i); 1ifPc5j}
if(sHeader!=null)
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{ S^)xioKsJ
if(sHeader.equals("Content-Length")) \; zix(N[5
{ %`j2?rn
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); N
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break; b|U3\Fmc
} b(_PV#@$
} 5xc-MkIRL
else `IK3e9QpcA
break; eSSv8[u
} 0*:4@go0}i
} XtIY8wsP
catch(IOException e){e.printStackTrace ();} ^oZD44$
catch(Exception e){e.printStackTrace ();} KCfcEz
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Utility.log(nFileLength);
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return nFileLength; 7;NvR4P%
} (L"G,l
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//保存下载信息(文件指针位置) ]dHV^!
private void write_nPos() WC
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try{ $c24l J#/
output = new DataOutputStream(new FileOutputStream(tmpFile)); 3qq6X?y*
output.writeInt(nStartPos.length); d<v)ovQJ]
for(int i=0;i<nStartPos.length;i++) oBzjEv
{ d+g+{p>?
// output.writeLong(nPos); _"sFLe{
output.writeLong(fileSplitterFetch.nStartPos); !,N),xG}~
output.writeLong(fileSplitterFetch.nEndPos); si|b>R&Z
} cz$q~)I$
output.close(); Sv03="&
} }'Yk#Q
catch(IOException e){e.printStackTrace ();} N,u~ZEI
catch(Exception e){e.printStackTrace ();} f"A?\w @
} ,7izrf8
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//读取保存的下载信息(文件指针位置) ]}jY]
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private void read_nPos() fAV=O%^
{ T\o!^|8
try{ YGr^uTQb
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); uM9RlI5
int nCount = input.readInt(); /,2${$c!
nStartPos = new long[nCount]; {;ur~KE
nEndPos = new long[nCount]; ;PhX[y^*
for(int i=0;i<nStartPos.length;i++) L51uC ,QF
{ }&Jml%F4uR
nStartPos = input.readLong(); `K\(I#z
nEndPos = input.readLong(); H He~OxWg
} oj~0zJI
input.close(); Y7
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} 9oJ=:E~CP
catch(IOException e){e.printStackTrace ();} U/bQ(,3}
catch(Exception e){e.printStackTrace ();} _sp/RU,J-3
} s1NRUV2E
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private void processErrorCode(int nErrorCode) gDjs:]/YR
{ cakb.Q
System.err.println("Error Code : " + nErrorCode); ,-{2ai_
} $@:z4S(
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//停止文件下载 / =2
public void siteStop() Qd$!?h
{ j{u!/FD
bStop = true; rocG;$[
for(int i=0;i<nStartPos.length;i++) : $>TeCm
fileSplitterFetch.splitterStop();
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} 2u|}gZts
} GwaU7[6
//负责部分文件的抓取 y!?l;xMS
**FileSplitterFetch.java DEkFmmw
*/ pn6!QpV5
package NetFox; ~wsDg[
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import java.io.*; *PJg~F%
import java.net.*; 4#BoS9d2I<
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public class FileSplitterFetch extends Thread { ;n,@[v
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String sURL; //File URL p x1{=~V/
long nStartPos; //File Snippet Start Position "'
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long nEndPos; //File Snippet End Position |_J[n!~f7
int nThreadID; //Thread's ID idr,s\$>
boolean bDownOver = false; //Downing is over `Vqpo/
boolean bStop = false; //Stop identical @fWmz,Ngl
FileAccessI fileAccessI = null; //File Access interface DdL0MGwX
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException -S"$S16D
{ N{<=s]I%x
this.sURL = sURL; s]=s|
this.nStartPos = nStart; ;h"?h*}m!\
this.nEndPos = nEnd; ,HFoy-Yq
nThreadID = id; duKR;5:
fileAccessI = new FileAccessI(sName,nStartPos);//定位 YkKq}DXj
} <([1(SY2e
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public void run() RqIic\aD
{ /f7Fv*z/
while(nStartPos < nEndPos && !bStop) .Qp 5wCkM
{ %:eepG|
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try{ FN&.PdRT
URL url = new URL(sURL); Q4_+3-g<7L
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 0 pHqNlb
httpConnection.setRequestProperty("User-Agent","NetFox"); 12Hy.l
String sProperty = "bytes="+nStartPos+"-"; qxsK-8KT<
httpConnection.setRequestProperty("RANGE",sProperty); z6K"}C%
Utility.log(sProperty); qd B@P
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InputStream input = httpConnection.getInputStream(); MT,LO<.
//logResponseHead(httpConnection); /2&