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**SiteFileFetch.java QHXpX9
*/ >yenuqIKQv
package NetFox; #mioT",bm=
import java.io.*; b+RU <qR
import java.net.*; 6V9r[,n
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public class SiteFileFetch extends Thread { ZHwN3
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SiteInfoBean siteInfoBean = null; //文件信息Bean R/B/|x
long[] nStartPos; //开始位置 \\Zsxya1
long[] nEndPos; //结束位置 U1yspHiZ
FileSplitterFetch[] fileSplitterFetch; //子线程对象 -hF!_);{
long nFileLength; //文件长度 oQVm)Bn'R
boolean bFirst = true; //是否第一次取文件 oN83`Z
boolean bStop = false; //停止标志 Ir` l*:j$
File tmpFile; //文件下载的临时信息 -'oxenu
DataOutputStream output; //输出到文件的输出流 Ss{5'SF)$c
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) !#5y%Bf
public SiteFileFetch(SiteInfoBean bean) throws IOException )g&nI<Mh
{ u,@ac[!vP
siteInfoBean = bean; va(6?"9
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); $^e_4]k
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); p&xj7qwp@F
if(tmpFile.exists ()) SRHD"r^@
{ /a$Zzs&xs
bFirst = false; 1)xj 'n
read_nPos(); /ml+b8@
} K)Ya%%6[U#
else HA$7Q~{N-t
{ RU.MJ
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nStartPos = new long[bean.getNSplitter()]; 2
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nEndPos = new long[bean.getNSplitter()]; 4;jAdWj3
} +U1fa9NSn
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} sV%=z}n=
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public void run() -G1R><8[
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//获得文件长度 !}eq~3
//分割文件 M.$=tuUL
//实例FileSplitterFetch 925T#%y
//启动FileSplitterFetch线程 5}]gL
//等待子线程返回 |c$*Fa"A
try{ DM,;W`|6%
if(bFirst) ~2NTXp
{ 8M['-
nFileLength = getFileSize(); !*wd
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if(nFileLength == -1) m KKa0"
{ -&y&b-
System.err.println("File Length is not known!"); UBuG12U4Y
} *MWI`=c
else if(nFileLength == -2) c!$~_?]
{ 1JGww]JZo
System.err.println("File is not access!"); {v3@g[:|
} MzW!iG
else ~vZ1.y4
{ TYxi&;w
for(int i=0;i<nStartPos.length;i++) zs-,Y@ZL
{ cnDBT3$~Z
nStartPos = (long)(i*(nFileLength/nStartPos.length)); naY#`xig
} nrTCq~LO(
for(int i=0;i<nEndPos.length-1;i++) 2Y}A9Veb
{ esv<b>`R
nEndPos = nStartPos[i+1]; `1
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} }V+&o\4
nEndPos[nEndPos.length-1] = nFileLength; ,+5!1>\
} (elkk#
} @<S'f<>g
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//启动子线程 'Te'wh=Y
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; |L)qH"Eo
for(int i=0;i<nStartPos.length;i++) kgX"I ?>d
{ 0M}Ql5+h,
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), i8/"|+Z
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Je#3
nStartPos,nEndPos,i); lb)i0`AN+
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); e A9r M:
fileSplitterFetch.start(); @^Kw\s
} QSo48OFs
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [!#;QQ&M
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); U,`F2yD/!
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", BQ~\ p\
nEndPos = " + nFileLength); gqAN-b'
// fileSplitterFetch[nPos.length-1].start(); S.fb[gI]
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//等待子线程结束 |P"kJ45
//int count = 0; AIwp2Fz
//是否结束while循环 VB+y9$Y'
boolean breakWhile = false; 1i|5ii*vc
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while(!bStop) .18MMzdN
{ `$VnB
write_nPos(); kPp7;U2A
Utility.sleep(500); 6)3pnhG9
breakWhile = true; 74~%4
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for(int i=0;i<nStartPos.length;i++) SM`n:{N(
{ #|} EPD9$
if(!fileSplitterFetch.bDownOver) PkdL] !:
{ Kx,<-]4
breakWhile = false; RM`iOV,Y
break; *i7|~q/u
} K&iU+
} rge/qUr/^
if(breakWhile) :LR>U;2
break; )G|'PXI@,
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//count++; lLL) S
//if(count>4) k`,>52
// siteStop(); flU?6\_UC
} wb-_CQ
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System.err.println("文件下载结束!"); h\OMWJ~
} @w[HXb
catch(Exception e){e.printStackTrace ();} 0qo:M3
} D +9l$**a
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//获得文件长度 1:q5h*
public long getFileSize() y gTc
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{ ]AB4w+6!
int nFileLength = -1; @avG*Mr^
try{ p!~V@l
URL url = new URL(siteInfoBean.getSSiteURL()); X~g~U|B@
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ,A!0:+
httpConnection.setRequestProperty("User-Agent","NetFox"); p+1kU1F0
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int responseCode=httpConnection.getResponseCode(); ksli-Px
if(responseCode>=400) e:RgCDWL
{ XRWy#Pj
processErrorCode(responseCode); JE/Kf<
return -2; //-2 represent access is error !&vPG>V
} (%iCP/E3
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String sHeader; rTtxmw0
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for(int i=1;;i++) X?OH//co
{ [#C(^J*@c
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); .L}k-8
//Utility.log(in.readLine()); 0 5o
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sHeader=httpConnection.getHeaderFieldKey(i); /gq
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if(sHeader!=null) c\(CbC
{ &X
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if(sHeader.equals("Content-Length")) {3*Zx"e![
{ >du|DZq
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); @
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break; Y`!Zk$8
} 5TS&NefM
} W 33MYw
else #w#:f
break; _tQR3I5
} ?=0BU}
} WBY_%RTx
catch(IOException e){e.printStackTrace ();} NN@'79x
catch(Exception e){e.printStackTrace ();} h7F5-~SpD
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Utility.log(nFileLength); oD&axNk
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return nFileLength; k^*S3#"
} 58o'Q
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//保存下载信息(文件指针位置) tkKiuh?m
private void write_nPos() C0 %yGLh&
{ SK;c
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try{ qv.s-@l8
output = new DataOutputStream(new FileOutputStream(tmpFile)); 3DS&-rN
output.writeInt(nStartPos.length); gano>W0
for(int i=0;i<nStartPos.length;i++) d\v1R-V
{ :"I!$_E'
// output.writeLong(nPos); <#F@OU
output.writeLong(fileSplitterFetch.nStartPos); X6SWcJtSw
output.writeLong(fileSplitterFetch.nEndPos); Av_JcH
} j NkobJ1
output.close(); fKOC-%w
} ;30SnR/
catch(IOException e){e.printStackTrace ();} nb_$g@ 03
catch(Exception e){e.printStackTrace ();} `D={l29H
} b,uudtlH
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//读取保存的下载信息(文件指针位置) ~X!Z+Vg
private void read_nPos() _mc-CZ
{ ~Y/o9x0
try{ 1paLxR5
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); _|I`A6`=
int nCount = input.readInt(); /l1OC(hm
nStartPos = new long[nCount]; 0<#>LWaM_
nEndPos = new long[nCount]; GYwU3`{
for(int i=0;i<nStartPos.length;i++) LeaJ).Maw
{ qvG@kuz8g5
nStartPos = input.readLong(); xY>@GSO1
nEndPos = input.readLong(); rc`}QoB)R
} Z]qbLxJV
input.close(); 5)iOG#8qJ
} kmT5g gy
catch(IOException e){e.printStackTrace ();} ]-"G:r
catch(Exception e){e.printStackTrace ();} f O ,5
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} 7oV$TAAf
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private void processErrorCode(int nErrorCode) '|^x[8^
{
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System.err.println("Error Code : " + nErrorCode); v8f1o$R
} 2xK v;
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//停止文件下载 h yK&)y?~
public void siteStop() i8->3uB
{ ,9Si3vn
bStop = true; E.eUd4XG
for(int i=0;i<nStartPos.length;i++) #gsJ
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fileSplitterFetch.splitterStop(); <NXJ&xs-+
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} 3t9Weo)
} .C,D;T{
//负责部分文件的抓取 `Vl9/IEk
**FileSplitterFetch.java vb`R+y@
*/ qs Wy
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package NetFox; 75^AO>gt
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import java.io.*; c*.-mS~Z`
import java.net.*; @L$!hTaP
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public class FileSplitterFetch extends Thread { ( 4(,"
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String sURL; //File URL w)C5XX30;
long nStartPos; //File Snippet Start Position /V
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long nEndPos; //File Snippet End Position uH]oHh!}j
int nThreadID; //Thread's ID Jb*E6-9G
boolean bDownOver = false; //Downing is over v=d16
boolean bStop = false; //Stop identical CorV!H4
FileAccessI fileAccessI = null; //File Access interface Xz`0nU
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException h8dFW"cpC
{ 8qL.L(=\/
this.sURL = sURL; Swr4De_5
this.nStartPos = nStart; QQJf;p7
this.nEndPos = nEnd; 3 3zE5vr
nThreadID = id; h:RP/0E
fileAccessI = new FileAccessI(sName,nStartPos);//定位 y9b%P]i
} <*(^QOM
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public void run() $*;`$5.x^
{ p(6 sN=
while(nStartPos < nEndPos && !bStop) P ; h8
{ Cxeam"-HTt
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try{ BP}@E$
URL url = new URL(sURL); F3hG8YX
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); yd=b!\}WJ
httpConnection.setRequestProperty("User-Agent","NetFox"); *3)kr=x
String sProperty = "bytes="+nStartPos+"-"; +PS
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httpConnection.setRequestProperty("RANGE",sProperty); E>+>!On)b
Utility.log(sProperty); k%BU&%?1
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InputStream input = httpConnection.getInputStream(); !Au#j^5K-o
//logResponseHead(httpConnection); Q(36RX%@
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byte[] b = new byte[1024]; 5owK2
int nRead; bQ(-M:
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) rr,w/[
{ \<ysJgqUG
nStartPos += fileAccessI.write(b,0,nRead); \W]gy_=D{
//if(nThreadID == 1) .cbC2t95
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); VD<z]@
} 2vWn(6`
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Utility.log("Thread " + nThreadID + " is over!"); L&