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**SiteFileFetch.java UO`;&e-DB
*/ x90*yaw>h
package NetFox; :)f7A7 :;
import java.io.*; pfuW
import java.net.*; Lr;(xw\['
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public class SiteFileFetch extends Thread { EfLO5$?rm
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SiteInfoBean siteInfoBean = null; //文件信息Bean ^y viV
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long[] nStartPos; //开始位置 10Wz,vW,n
long[] nEndPos; //结束位置 ]T!
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 #1'\.v
long nFileLength; //文件长度 a[bBT@f
boolean bFirst = true; //是否第一次取文件 YO)$M-]>%J
boolean bStop = false; //停止标志 AT
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File tmpFile; //文件下载的临时信息 AZ |yX
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) &>WWzikB*
public SiteFileFetch(SiteInfoBean bean) throws IOException 2Tav;LKX
{ pVp:@0h
siteInfoBean = bean; `i~ Y Fr
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); x LBQ
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 6Sj6i^"
if(tmpFile.exists ()) ',7??Q7j&v
{ ?VU(Pq*`
bFirst = false; .k{ j]{k
read_nPos(); u#7+U\
} Q~D`cc|]
else IHfzZHy
{ `L;eba
nStartPos = new long[bean.getNSplitter()]; @\_x'!R
nEndPos = new long[bean.getNSplitter()]; l*b)st_p%
} PQW(EeQ
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} >Y 1{rSk
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public void run() yj6@7@l>A
{ rI$`9d
//获得文件长度 `pZs T
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//分割文件 %wV>0gQTf
//实例FileSplitterFetch }H4=HDO
//启动FileSplitterFetch线程 G}@#u9
//等待子线程返回 j Ib
try{ DH DZ_t:
if(bFirst) eg"Gjp-4=
{ _zxLwU1(x
nFileLength = getFileSize(); ulHn#)
if(nFileLength == -1) 8 S`9dSc
{ .N4
System.err.println("File Length is not known!"); .UCt|> $
} egR9AEJvz
else if(nFileLength == -2) O[17";P
{ s}&bJ"!Z
System.err.println("File is not access!"); RIM`omM
} g o5]<4`r
else F-(dRSDNM
{ T`/IO.2
for(int i=0;i<nStartPos.length;i++) SDG-~(Y
{ x)rlyjFM
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ? Q@kg
} PMs z`
for(int i=0;i<nEndPos.length-1;i++) XB hb`AG
{ @Fv=u
nEndPos = nStartPos[i+1]; ){s*n=KIO
} :Br5a34q
nEndPos[nEndPos.length-1] = nFileLength; <O?y-$~
} ;cQW sTfT
} _,Fny_u=;
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//启动子线程 A\rt6/
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; <HWS:'1
for(int i=0;i<nStartPos.length;i++) @4~=CV%j
{ Dq\ Jz~
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), J`M&{UP
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), |XYEn7^r
nStartPos,nEndPos,i); eC
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 8GPIZh'0h
fileSplitterFetch.start(); c;f!!3&
} Z!d7&T}
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), m4K* <
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); "\"DCDKmG
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", |as!Ui/J/
nEndPos = " + nFileLength); S&O3HC
// fileSplitterFetch[nPos.length-1].start(); p]D]:
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//等待子线程结束 s6*ilq1
//int count = 0; .%EL \2
//是否结束while循环 Rx07trfN
boolean breakWhile = false; =*BIB5
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while(!bStop) Mvj;ic6iK
{ H?1xjY9sl
write_nPos(); <mA'X V,
Utility.sleep(500); *F^wtH`
breakWhile = true; 9L0GLmLk1u
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for(int i=0;i<nStartPos.length;i++) ~8 H_u
{ +1JH
if(!fileSplitterFetch.bDownOver) p1pQU={<
{ u*S=[dq
breakWhile = false; qIUfPA=/_
break; %A1@&xrbl
} 6\7ncFO3
} gieN9S
if(breakWhile) Z0!5d<
break; L(S'6z~_9
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//count++; yfQ5:X
//if(count>4) z@|dzvjl
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// siteStop(); 'z@ 0
} Kr'f- {
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System.err.println("文件下载结束!"); in <(g@Zg
} $\o{_?}1
catch(Exception e){e.printStackTrace ();} DDT_kK;
}
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//获得文件长度 %t=kdc0=_
public long getFileSize() +i ?S
{ sKz`aqI
int nFileLength = -1; >%p{38
try{ !1T\cS#1%
URL url = new URL(siteInfoBean.getSSiteURL()); MfO:m[s
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 7`vEe'qz
httpConnection.setRequestProperty("User-Agent","NetFox"); CQ7{1,?2
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int responseCode=httpConnection.getResponseCode();
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if(responseCode>=400) 'oNO-)p\#!
{ DBLk!~IF
processErrorCode(responseCode); *,C(\!b
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return -2; //-2 represent access is error 7 J^rv9i4
} mvW%
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String sHeader; #
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for(int i=1;;i++) 2n><RZ/9
{ =@Dwlze
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); I4;A8I
//Utility.log(in.readLine()); 3K&4i'}V
sHeader=httpConnection.getHeaderFieldKey(i); 84HUBud76Y
if(sHeader!=null) c0c|z
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{ ^m#-9- `
if(sHeader.equals("Content-Length")) R_]{2~J+
{ iUMY!eqp
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); K/m3
break; VUTacA Y>L
} /-zXM;h
} hc
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else 0.$hn
break; rWys'uc
} &uP~rEJl+
} o)6p A^+
catch(IOException e){e.printStackTrace ();} h1 WT
catch(Exception e){e.printStackTrace ();} sAo&
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Utility.log(nFileLength); WPZ?*Sx
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return nFileLength; kP#e((f,
} R(.}C)q3
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//保存下载信息(文件指针位置) }(a+aHH
private void write_nPos() AE: Z+rM*
{ ]v[|B
try{ Nu8Sr]p
output = new DataOutputStream(new FileOutputStream(tmpFile)); 2._X|~0a
output.writeInt(nStartPos.length); _'4A|-9
for(int i=0;i<nStartPos.length;i++) NmK8<9`u
{ wB'zuPAK6
// output.writeLong(nPos); 6nhMP$h
output.writeLong(fileSplitterFetch.nStartPos); xI,2LGO
output.writeLong(fileSplitterFetch.nEndPos); Ehzo05/!
} 2|\A7.
output.close(); &`b
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} d0'JC*
catch(IOException e){e.printStackTrace ();} '|;X0fD
catch(Exception e){e.printStackTrace ();} TJE\A)|>g
} [c_|ob]
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//读取保存的下载信息(文件指针位置) 2r$#m*
private void read_nPos() IwGqf.!.>
{ $R<Me
try{ :akT 'q#
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); .ROznCe}
int nCount = input.readInt(); v}WR+)uFQ
nStartPos = new long[nCount]; :Hxv6
nEndPos = new long[nCount]; .^J2.>.
for(int i=0;i<nStartPos.length;i++) MX>[^}n
{ `1 :{0p2q
nStartPos = input.readLong(); *<1r3!
nEndPos = input.readLong(); @aJ!PV'ms
} EpQ8a[<-3
input.close(); `3p~m,
} <dyewy*.L
catch(IOException e){e.printStackTrace ();} 12Y
catch(Exception e){e.printStackTrace ();} 1+?^0%AC
} hsu{ey p
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private void processErrorCode(int nErrorCode) Dk48@`l2
{ .`?@%{
System.err.println("Error Code : " + nErrorCode); IK*07h/!
} vn/.}GkpU
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//停止文件下载 :[;hu}!&
public void siteStop() [w ;kkMJAy
{ \h8 <cTQ
bStop = true; -G6U$
for(int i=0;i<nStartPos.length;i++) Ty88}V
fileSplitterFetch.splitterStop(); g^zs,4pPU<
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} UA|u U5Q
} HSq}7S&U
//负责部分文件的抓取 A 7[:5$
**FileSplitterFetch.java 'vN G(h#%d
*/ )8g(:`w
package NetFox; A$6$,h
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import java.io.*; EJ2yO@5O
import java.net.*; <FZ@Q[RP
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public class FileSplitterFetch extends Thread { },|M9I0
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String sURL; //File URL T0]MuIJ).
long nStartPos; //File Snippet Start Position _V`DWR
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long nEndPos; //File Snippet End Position JU&+c6>
int nThreadID; //Thread's ID g}]t[}s1]
boolean bDownOver = false; //Downing is over # W"=ry3{
boolean bStop = false; //Stop identical ?6'rBH/w
FileAccessI fileAccessI = null; //File Access interface rj!0GI
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException qe5feky
{ J=/5}u_gw
this.sURL = sURL; *2jK#9"MP
this.nStartPos = nStart; :%IoM E
this.nEndPos = nEnd; 6-O_\Cq8
nThreadID = id; bJs9X/E
fileAccessI = new FileAccessI(sName,nStartPos);//定位 _YRE (YZ/
} ,a#EW+" Z
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public void run() ;| 1$Q!4
{ $8BPlqBIZ
while(nStartPos < nEndPos && !bStop) i~r l o^
{ r7qh>JrO
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try{ }NB}"%2
URL url = new URL(sURL); B$Kn1 k
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); bV"G~3COy
httpConnection.setRequestProperty("User-Agent","NetFox"); p)+k=b
String sProperty = "bytes="+nStartPos+"-"; cph:y
httpConnection.setRequestProperty("RANGE",sProperty); NFv>B>
Utility.log(sProperty); n'emNRa
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InputStream input = httpConnection.getInputStream(); 4!KoFoZt*
//logResponseHead(httpConnection); =JmT:enV
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byte[] b = new byte[1024]; {AQ=<RDRF
int nRead; X]'7Ov
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ,~._}E&9I
{ %; D.vKoh
nStartPos += fileAccessI.write(b,0,nRead); 7x<i :x3
//if(nThreadID == 1) jRatm.N
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); LW(6$hpPp
} bcupo:N
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Utility.log("Thread " + nThreadID + " is over!"); TjG4`:*y#m
bDownOver = true; aFLO{t r`
//nPos = fileAccessI.write (b,0,nRead); ~ar=PmYV7
} :<|<|qJWo
catch(Exception e){e.printStackTrace ();} `He,p -
} 1x,tu}<u^
} +sJrllrE(
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//打印回应的头信息 ZzX~&95G
public void logResponseHead(HttpURLConnection con) n?c]M
{ &