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**SiteFileFetch.java D B-l$rj
*/ IhA5Wt0j
package NetFox; 12;8o<~
import java.io.*; gCioq.
import java.net.*; 4SlADvGl
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public class SiteFileFetch extends Thread { Cnbz=z
} \HN&@
*
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SiteInfoBean siteInfoBean = null; //文件信息Bean eZ|%<Wpu
long[] nStartPos; //开始位置 |$Xl/)Oq
long[] nEndPos; //结束位置 >#hO).`C
FileSplitterFetch[] fileSplitterFetch; //子线程对象 FN\E*@>X=
long nFileLength; //文件长度 4 !y%O
boolean bFirst = true; //是否第一次取文件 j Dy-)2<
boolean bStop = false; //停止标志 .2%zC & ;
File tmpFile; //文件下载的临时信息 jUSmqm'
DataOutputStream output; //输出到文件的输出流 Y( 3Bp\6
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) SS$[VV
public SiteFileFetch(SiteInfoBean bean) throws IOException *a58ZI@
{ IB[)TZ2m
siteInfoBean = bean; o$w_Es]Ma
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Z&|Kki*
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); n^z]q;IN2.
if(tmpFile.exists ()) {B[=?6tQ
{ 7(qE0R&@
bFirst = false; P"W2(d
read_nPos(); &Q>k7L!
} !P)O(i=
else a4XU?-sUh
{ @xbQ Ye%J
nStartPos = new long[bean.getNSplitter()]; A9wh(P0\
nEndPos = new long[bean.getNSplitter()]; !q9+9 *6
} 2
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} c- }X_)U }
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public void run() p(~Yx3$*
{ "f "6]y
//获得文件长度 o| #Qu8Lk
//分割文件 c
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//实例FileSplitterFetch 4WJ.^ (
//启动FileSplitterFetch线程 cFeXpj?GV
//等待子线程返回
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try{ v#.r.{t
if(bFirst) 7T1=q{#M
{ z"0I>gl
nFileLength = getFileSize(); 8Le||)y,\
if(nFileLength == -1) (>r[-Bft
{ Cq%IE^g<
System.err.println("File Length is not known!"); )rekY;
} D|Q#gcWp o
else if(nFileLength == -2) ,6om\9.E@
{ 3wC' r
System.err.println("File is not access!"); :.$3vaZ@
} O*0l+mop
else YhDtUt}?
{ 8=gjY\Dp
for(int i=0;i<nStartPos.length;i++) M+w=O!dq
{ ptU\[Tq
nStartPos = (long)(i*(nFileLength/nStartPos.length)); *T5!{
} i70wrW#k
for(int i=0;i<nEndPos.length-1;i++) ]=>F.GE
{ .
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nEndPos = nStartPos[i+1]; \'|>p/5I
} i[?Vin
nEndPos[nEndPos.length-1] = nFileLength; >AcrG]
} ^-,xE>3o
} V+VkY3
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//启动子线程 }Q=!Y>Tc
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; dvt9u9Vg=
for(int i=0;i<nStartPos.length;i++) T3k#VNH
{ vvKEv/pN7
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Y?(r3E^x
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), iZM+JqfU|D
nStartPos,nEndPos,i); hFH*B~*:#
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !*oi!ysU;O
fileSplitterFetch.start(); QNpqdwu%h
} S/4^ d &Gr
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), QWzB6H]
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Sgp;@4`M
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", px}|Mu7z~
nEndPos = " + nFileLength); aB7+Tb
// fileSplitterFetch[nPos.length-1].start(); ][?G/*k
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//等待子线程结束 @wE5S6! B\
//int count = 0; (X?%^^e!
//是否结束while循环 4}4Pyjh
boolean breakWhile = false; A29gz:F(
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while(!bStop) F.w5S!5Q
{ .HkL2m
write_nPos(); FW/W%^
Utility.sleep(500); STxKE %l
breakWhile = true; 9J9)AV
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for(int i=0;i<nStartPos.length;i++) iZaI_\"__
{ !f&Kf,#b`
if(!fileSplitterFetch.bDownOver) :=wTvz
{ N4L|;?
breakWhile = false; ^eR%N8Z
break; h-Fn?
} >(?9?
} hvDNz"ec{
if(breakWhile) `kZ@Zmj#
break; 3td)'}
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//count++; c@/(B:@
//if(count>4) ni<A3OB
// siteStop(); E}40oID
} ;9#Z@]p
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System.err.println("文件下载结束!"); -3;*K4z$/
} V-Cv,8
catch(Exception e){e.printStackTrace ();} .zn;:M#T
} Db;G@#x
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//获得文件长度 m6',SY9T
public long getFileSize() 1DvR[Lx%
{ p' +
int nFileLength = -1; ds?v'|
try{ lJE93rXU
URL url = new URL(siteInfoBean.getSSiteURL()); YEj8S5"Su\
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); X!m9lV<
httpConnection.setRequestProperty("User-Agent","NetFox"); 20Z8HwQi
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int responseCode=httpConnection.getResponseCode(); Y@b.sMg{
if(responseCode>=400) l)!n/x_ !
{ 8erSt!oM
processErrorCode(responseCode); !!`!|w
return -2; //-2 represent access is error 't6V:X
} /)4I|"}R0I
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String sHeader; )*,5"CO
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for(int i=1;;i++) brdmz}
{ 0 0M@
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); `.x
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//Utility.log(in.readLine()); A@sZ14+f
sHeader=httpConnection.getHeaderFieldKey(i); 4Qo]nre!
if(sHeader!=null) R
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{ ,B0_MDA +
if(sHeader.equals("Content-Length")) unBy&?&p
{ *7h!w!LN~
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Up,vD)tG
break; D,g1<:<
} nSkPM5\TI
} qUOKB6
else C@bm
break; o]p|-<I Q
} |Tm!VFd
} DBT&DS
catch(IOException e){e.printStackTrace ();} ^9ePfF)5
catch(Exception e){e.printStackTrace ();} F$hYKT2|
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Utility.log(nFileLength); ^",ACWF4Sk
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return nFileLength; Nqrmp" ]
} 1f8GW
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//保存下载信息(文件指针位置) H8`(O"V
private void write_nPos() TH$N5w%
{ i}o[- S4
try{ ]@0NO;bK>F
output = new DataOutputStream(new FileOutputStream(tmpFile)); :P@rkT3Q t
output.writeInt(nStartPos.length); ]- 4QNc=
for(int i=0;i<nStartPos.length;i++)
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{ *0>mB
// output.writeLong(nPos); !}r%
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output.writeLong(fileSplitterFetch.nStartPos); NN1$'"@NL
output.writeLong(fileSplitterFetch.nEndPos); 6+KHQFb&N
} {FG|\nPw
output.close(); EoxQ
*/
} e&qh9mlE
catch(IOException e){e.printStackTrace ();} E4W zU
catch(Exception e){e.printStackTrace ();} LbZ:&/t^y8
} w&B#goS
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//读取保存的下载信息(文件指针位置) *L'>U[Pl7
private void read_nPos() jD`d#R
{ *r$+&8V\n
try{ _!?Hu/zo
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); GR"Eas.$
int nCount = input.readInt(); f4guz
nStartPos = new long[nCount]; kr9gK~
nEndPos = new long[nCount]; `UQf2o0%3w
for(int i=0;i<nStartPos.length;i++) pmFk50`
{ +ke1Cn'[
nStartPos = input.readLong(); *mMEl]+
nEndPos = input.readLong(); W!"}E%zx
} MiRdX#+Y
input.close(); x"CZ]p&m
} o)[2@fRC(
catch(IOException e){e.printStackTrace ();} \C`~S7jC
catch(Exception e){e.printStackTrace ();} ryc& n5
} pOrWg@<\L
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private void processErrorCode(int nErrorCode) -#Z
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{ WzI8_uM
System.err.println("Error Code : " + nErrorCode); W{rt8^1
} &%_& 8DkG
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//停止文件下载 jh.@-
public void siteStop() kee|42E
{ f7 'q-
bStop = true; D Kw*~0
for(int i=0;i<nStartPos.length;i++) j$7Xs"
fileSplitterFetch.splitterStop(); F|HJH"2*&q
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} |/|
} `WOYoec
//负责部分文件的抓取 yj$TPe_BW
**FileSplitterFetch.java ,.o<no
*/ U7DCx=B
package NetFox; DtEwW1J
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import java.io.*; o8Z[+;
import java.net.*; B=@ jW z"
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public class FileSplitterFetch extends Thread { 2Gs$?}"a
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//&j<vus
String sURL; //File URL N7s'6(`=X
long nStartPos; //File Snippet Start Position Jz! Z2c
long nEndPos; //File Snippet End Position ,o7hk{fR*
int nThreadID; //Thread's ID lMz<s
boolean bDownOver = false; //Downing is over !P$'#5mr
boolean bStop = false; //Stop identical (?*BB3b`
FileAccessI fileAccessI = null; //File Access interface ~kCwJ<E
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException _NcYI
{ oiH|uIsqR
this.sURL = sURL; #DjCzz\
this.nStartPos = nStart; /S\cU`ZVe
this.nEndPos = nEnd; AC.A'|"]i
nThreadID = id; dk==?
fileAccessI = new FileAccessI(sName,nStartPos);//定位 1,V`8 [
} Zh/Uu6
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public void run() \Yoa:|%*y
{ sIl33kmv
while(nStartPos < nEndPos && !bStop) w~@-9<^K]v
{ (.Lrmf@hI7
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try{ %ObD2)s6:^
URL url = new URL(sURL); 3[XQR8o
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); h)v^q: ='
httpConnection.setRequestProperty("User-Agent","NetFox"); Oc&),ru2l
String sProperty = "bytes="+nStartPos+"-"; v[lnw} =m9
httpConnection.setRequestProperty("RANGE",sProperty); &-1./?
Utility.log(sProperty); @wq#>bm
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InputStream input = httpConnection.getInputStream(); t+nRw?Z
//logResponseHead(httpConnection); w18RA#Zo/
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dP>w/$C}
byte[] b = new byte[1024]; IF@HzT;Q
int nRead; &l