/* V43TO
**SiteFileFetch.java 6#U^<`
*/ X3<K 1/<
package NetFox; P;73Hr[E#
import java.io.*; h$>wv`
import java.net.*; PQ$sOK|/
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public class SiteFileFetch extends Thread { b?8)7.{F{
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SiteInfoBean siteInfoBean = null; //文件信息Bean /N6}*0Ru
long[] nStartPos; //开始位置 X d3}Vn=
long[] nEndPos; //结束位置 $#e1SS32
FileSplitterFetch[] fileSplitterFetch; //子线程对象 0]B(a
long nFileLength; //文件长度 ?^}_j
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boolean bFirst = true; //是否第一次取文件 +>SRrIi
boolean bStop = false; //停止标志 V^TbP.
File tmpFile; //文件下载的临时信息 _|A+) K
DataOutputStream output; //输出到文件的输出流 {]^O:i"
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ;'0=T0\
public SiteFileFetch(SiteInfoBean bean) throws IOException D/CIA8h3
{ .fp&MgiQ
siteInfoBean = bean; 5pfYEofK[
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); H>XFz(LWh
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); y! ~qbh[
if(tmpFile.exists ()) Be2lMC
{ p$Hi[upy
bFirst = false; |
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read_nPos(); H; Ku
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} '1Y\[T*
else ^AL2H'
{ X:|8vS+0gU
nStartPos = new long[bean.getNSplitter()]; }gv8au<
nEndPos = new long[bean.getNSplitter()]; W3GNA""O
} po7>IQS]
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} d|lpec
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public void run() 36vgX=}
{ n<7u>;SJQ
//获得文件长度 nS9wb1Zl
//分割文件 _MuZ4tc
//实例FileSplitterFetch 02=ls V!U
//启动FileSplitterFetch线程 r@kP*
//等待子线程返回 |ZiC`Nt
try{
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if(bFirst) `\CVV*hP
{ SwW['c'*]B
nFileLength = getFileSize(); jQ+sn/ROp
if(nFileLength == -1) fQdK]rLj
{ Gh\q^?}
System.err.println("File Length is not known!"); =5x&8i
} G8J*Wnwu[K
else if(nFileLength == -2) [0y$! f4
{ yK%ebq]
System.err.println("File is not access!"); KzV 2MO-$
} f0>!qt
else "@/62b
{ hgj <>H|
for(int i=0;i<nStartPos.length;i++) 'xE
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{ Ii&7rdoxe
nStartPos = (long)(i*(nFileLength/nStartPos.length)); t:)ERT")
} e<cM[6H'D
for(int i=0;i<nEndPos.length-1;i++) j Ux
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nEndPos = nStartPos[i+1]; }H"kU2l
} eE@&ze>X
nEndPos[nEndPos.length-1] = nFileLength; }4//@J?:
} fo0+dzazY
} Qk1xUE
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//启动子线程 8|%^3O 0X
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 8}s.Fg@tE
for(int i=0;i<nStartPos.length;i++) Qf $|_&|
{ 7U|mu~$.!
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), n$n7-7
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ,yd= e}lQx
nStartPos,nEndPos,i); _zWfI.o
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); T0z n,ej
fileSplitterFetch.start(); De&6 9
} .iD*>M:W
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 36.N>G,
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); JW.=T)
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 9f+>ix,ek*
nEndPos = " + nFileLength); D B E4&
// fileSplitterFetch[nPos.length-1].start(); 4m)OR
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//等待子线程结束 U.!lTLjfLz
//int count = 0; !> }.~[M
//是否结束while循环 ~{,X3-S_H
boolean breakWhile = false; 6/V3.UP-
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while(!bStop) e[_m<e
{ qMt++*Ls
write_nPos(); R:Q0=PzDi#
Utility.sleep(500); YH&bD16c3
breakWhile = true; 9o*,P,j'}
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for(int i=0;i<nStartPos.length;i++) N-
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{ l 'DsZ9y@2
if(!fileSplitterFetch.bDownOver) 3"n\8#X{
{ ,L bBpi=TJ
breakWhile = false; +l3=3
break; .
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} 10!wqyj&
} X4l@woh%
if(breakWhile) ';Zi@f"
break; ~vlype3/EF
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//count++; evkH05+;W
//if(count>4) Tou/5?#%e
// siteStop();
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} l7# yZ*<v
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System.err.println("文件下载结束!"); EnOU?D
}
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catch(Exception e){e.printStackTrace ();} AL#4_]m'
} _4^R9Bt
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//获得文件长度 nWQ;9_qBB
public long getFileSize() ;qH O OT
{ `W/sP\3
int nFileLength = -1; r'QnX;99T
try{ 7$h#OV*@,
URL url = new URL(siteInfoBean.getSSiteURL()); V,rq0xW
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 3gd&i
httpConnection.setRequestProperty("User-Agent","NetFox"); oy<WsbnS
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int responseCode=httpConnection.getResponseCode(); 2^i(gaXUQ
if(responseCode>=400) g1t0l%_7^
{ y
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processErrorCode(responseCode); AL>$HB$
return -2; //-2 represent access is error P#=`2a#G
} 23~Sjr
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String sHeader; mZd ,
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for(int i=1;;i++) u\eEh*<7q
{ M|:UwqV>
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Yw#2uh
//Utility.log(in.readLine()); tHzZ@72B7
sHeader=httpConnection.getHeaderFieldKey(i); Qxj JN^Q
if(sHeader!=null) M(/r%-D
{ [jmd
if(sHeader.equals("Content-Length")) r Tz$^a}/
{ OpHsob~
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); C*P7-oE2rh
break; B(M6@1m_
} ..rOsg{
} 0jEL<TgC
else n=[/Z!
break; Yk=PS[f
} "I(xgx*
} i':C)7
catch(IOException e){e.printStackTrace ();} cTG|fdgMW
catch(Exception e){e.printStackTrace ();} IIbYfPiO
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Utility.log(nFileLength); w K}T`*k
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return nFileLength; ~ 0M'7q'
} P-9<YN
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//保存下载信息(文件指针位置) %f]:I
private void write_nPos() <_7*67{
{ P'_H/r/#
try{ 0\e IQp
output = new DataOutputStream(new FileOutputStream(tmpFile)); wp&=$Aa)'
output.writeInt(nStartPos.length); I1X-s
for(int i=0;i<nStartPos.length;i++) EKO[ !,
{ 13>0OKg`#
// output.writeLong(nPos); UeRj< \"Q
output.writeLong(fileSplitterFetch.nStartPos); D|{jR~J)xK
output.writeLong(fileSplitterFetch.nEndPos); HPZ}*m'
} Ftr5k^!
output.close(); ')$+G152
} 4qk9NK2 U
catch(IOException e){e.printStackTrace ();} 9gmW&{6q
catch(Exception e){e.printStackTrace ();} !_Wi!Vr_
} &wV]"&-
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//读取保存的下载信息(文件指针位置) adR)Uq9
private void read_nPos() 3xaR@xjS
{ h5^Z2:#
try{ ,LnII
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); w9bbMx
int nCount = input.readInt(); ;<ZLcTL
nStartPos = new long[nCount]; S Em Q@1
nEndPos = new long[nCount]; |AozR ~
for(int i=0;i<nStartPos.length;i++) N(Tz%o4
{ 2%_vXo=I
nStartPos = input.readLong(); WHj'dodS
nEndPos = input.readLong(); tIuCct-
} .?loO3 m
input.close(); :s7m4!EF
} \hx1o\
catch(IOException e){e.printStackTrace ();} &__es{;P
catch(Exception e){e.printStackTrace ();} r/u A.Aou^
} y#3j`. $3p
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private void processErrorCode(int nErrorCode) r2,.abo
{ N(Fp0
System.err.println("Error Code : " + nErrorCode); Tu).K.p:
} AHX St
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//停止文件下载 )mF5Vw"
public void siteStop() @}}$zv6l,
{ 8; 0A
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bStop = true; e?8HgiP-
for(int i=0;i<nStartPos.length;i++) '/^qJ7eb
fileSplitterFetch.splitterStop(); $\X[@E S0
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} hpO`]
} [PNT\ElT
//负责部分文件的抓取 ?#}N1k\S
**FileSplitterFetch.java SAy=WV
*/ e&&53?
package NetFox; BRgXr
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import java.io.*; UG+d-&~Ll
import java.net.*; 5kCUaPu
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public class FileSplitterFetch extends Thread { MkfBuW;)
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String sURL; //File URL >7jbgHB
long nStartPos; //File Snippet Start Position (|klSz_4LM
long nEndPos; //File Snippet End Position #49kjv@
int nThreadID; //Thread's ID u{['<r;I
boolean bDownOver = false; //Downing is over l]Ax : Z
boolean bStop = false; //Stop identical /5(Yy}
FileAccessI fileAccessI = null; //File Access interface ywGd> @
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Q(wx nm
{ a_f~N1kq
this.sURL = sURL; 49GkPy#]L=
this.nStartPos = nStart; (^TF%(H
this.nEndPos = nEnd; :XZU&Sr"
nThreadID = id; ,(qRc(Ho
fileAccessI = new FileAccessI(sName,nStartPos);//定位 lr>oYS0
} m% -g ~q
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public void run() 7}f}$1
{ v$7QIl_/7
while(nStartPos < nEndPos && !bStop) $q6BP'7
{ %b&".mN
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try{ vQosPS_2L
URL url = new URL(sURL); G&D7a/G\
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); -]/I73!b
httpConnection.setRequestProperty("User-Agent","NetFox"); `Q|*1
String sProperty = "bytes="+nStartPos+"-"; #hfXZVD
httpConnection.setRequestProperty("RANGE",sProperty); >7lx=T
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Utility.log(sProperty); -lbm*
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InputStream input = httpConnection.getInputStream(); [ey:e6,T9
//logResponseHead(httpConnection); nKPYOY8^
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byte[] b = new byte[1024]; ;&<{ey
int nRead; 5]KW^sL
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) E7t+E)=8
{ Y2a5bc P
nStartPos += fileAccessI.write(b,0,nRead); lD)%s!
//if(nThreadID == 1) 6h|q'.Y
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); LPZF)@|`
} nygbt<;?
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Utility.log("Thread " + nThreadID + " is over!"); U{7w#>V
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bDownOver = true; @Z*W
//nPos = fileAccessI.write (b,0,nRead); `|6'9
} iq8GrdL"
catch(Exception e){e.printStackTrace ();} u[@l~gwL
} +]*zlE\N`
} S=5<^o^h3
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//打印回应的头信息 wT;0w3.Z
public void logResponseHead(HttpURLConnection con) N >FKy'.gk
{ !TAlBkj
for(int i=1;;i++) f%SZg!+t
{ [b6R%
String header=con.getHeaderFieldKey(i); 0"kbrv2y
if(header!=null) XRcq hv
//responseHeaders.put(header,httpConnection.getHeaderField(header)); {_7i8c<s=
Utility.log(header+" : "+con.getHeaderField(header)); ?3nR
else 6g|*`x{
break; d ^^bke$~
} GGNvu)"
} Bzkoo J
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public void splitterStop() E)TN,@%
{ 6VS4y-N
bStop = true; wP6Fl L
} QN
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} s%qF/70'
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/* gW^VVbB'L
**FileAccess.java Yk)."r&