/* ..]X<
**SiteFileFetch.java [ BC%$Sj
*/ ?%fZvpn -
package NetFox; 87 E3pe
import java.io.*; 9QQ@Y}
import java.net.*; )Ai%wCzw*
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public class SiteFileFetch extends Thread { X\)KVn`
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SiteInfoBean siteInfoBean = null; //文件信息Bean oHFDg?Z`
long[] nStartPos; //开始位置 Z.OrHg1
long[] nEndPos; //结束位置 .p*D[o2 9
FileSplitterFetch[] fileSplitterFetch; //子线程对象 -3%)nV
long nFileLength; //文件长度 <|.! Px86
boolean bFirst = true; //是否第一次取文件 vrO$8* sy
boolean bStop = false; //停止标志 ,(kXF:
File tmpFile; //文件下载的临时信息 {-]HYk
DataOutputStream output; //输出到文件的输出流 ='||BxB
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) NX #d}M^V
public SiteFileFetch(SiteInfoBean bean) throws IOException }eRG$)'
{ kvVz-PJy
siteInfoBean = bean; rQ@o
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); cb&In<q
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Zgf||,
if(tmpFile.exists ()) bRe *(
{ Saq>o.
bFirst = false; v?"ee&Y6
read_nPos(); ?-& D'
} c5+lm}R ?
else r!gCh`PiK
{ <>/MKMq!
nStartPos = new long[bean.getNSplitter()]; v?=VZ~`O(
nEndPos = new long[bean.getNSplitter()]; P\0%nyOG(%
} *H<g9<Dn
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} =WRU<`\
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public void run() jY6=+9Jz5
{ rd~W.b_b
//获得文件长度 8VGXw;(Y,d
//分割文件 (mr`?LI}
//实例FileSplitterFetch @[Qg}'i
//启动FileSplitterFetch线程 ;4#8#;
//等待子线程返回 k3h53QTmC
try{ &{{f|o=u.
if(bFirst) M\4;d #
{ BQ)43Rr>
nFileLength = getFileSize(); [ +@<T)
if(nFileLength == -1) aq| [g
{ _ShJ3\,K
System.err.println("File Length is not known!"); 3t6'5{
} QHz76i!=>
else if(nFileLength == -2) d"a7{~l
{ 7%}}m&A7h
System.err.println("File is not access!"); uy\+#:44d
} :2d9ZDyD
else 5F?g6?j{
{ 9f[[%80
for(int i=0;i<nStartPos.length;i++) hRcJ):Wyb
{ A'R sy6
nStartPos = (long)(i*(nFileLength/nStartPos.length)); #e|kA&+8M
} A0sW 9P6F
for(int i=0;i<nEndPos.length-1;i++) B y8Tw;aL
{ KA2B3\
nEndPos = nStartPos[i+1]; )yAPYC
} I+Cmj]M s0
nEndPos[nEndPos.length-1] = nFileLength; k~F/Ho+R&
} Vs(Zs[
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//启动子线程 IKpx~
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; p5BcDYOw`
for(int i=0;i<nStartPos.length;i++) /YR$#&N2
{ /aEQ3x
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 0~+:~$VrT
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), tC~itU=V
nStartPos,nEndPos,i); 0R%58,R
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); x" T^>Q
fileSplitterFetch.start(); F+r6/e6a
} 2p[3Ap
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), {<8#T`I
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); =
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", %/C[\wp81
nEndPos = " + nFileLength); l0_O<
// fileSplitterFetch[nPos.length-1].start(); ]gk1h=Y~h
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//等待子线程结束 KrzM]x
//int count = 0; ( mMz]b5
//是否结束while循环 :UciFIa
boolean breakWhile = false; ["/x~\c'N
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while(!bStop) =LzW#s=O
{ __npX_4%S
write_nPos(); #O
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Utility.sleep(500); aoX$,~oI5
breakWhile = true; -6>rR{z
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for(int i=0;i<nStartPos.length;i++) =0Sa
{ ~`.%n7
if(!fileSplitterFetch.bDownOver) r2w7lf66!
{ [%Xfl7;Wh
breakWhile = false; 9$i`B>C~
break; $
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} 5}ah%
} v$Z1Lh
if(breakWhile) cxdM!L; `
break; C3gz)!3
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//count++; H0 t1& :
//if(count>4) EG6fC4rfC
// siteStop(); [8#l~
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} !y.7"G*
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System.err.println("文件下载结束!"); 2ra4t]f6
} hI0l2OE
catch(Exception e){e.printStackTrace ();} `Fr$q1qae{
} i=@*F$,
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//获得文件长度 iYkNtqn/
public long getFileSize() dZZ/(oE>
{ g-36Q~`9v
int nFileLength = -1; )-gyDA
try{ DK;-2K
URL url = new URL(siteInfoBean.getSSiteURL()); g=8e.Y*Fr
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ?Fu.,srt
httpConnection.setRequestProperty("User-Agent","NetFox"); >{Q2S
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int responseCode=httpConnection.getResponseCode(); XlPy(>
if(responseCode>=400) \&0NH=*^
{ >{Djx
processErrorCode(responseCode); ^gImb`<6-
return -2; //-2 represent access is error Sb.;$Be5g
} 3@*8\
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String sHeader; F44")fY
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for(int i=1;;i++) b._pG(o1
{ e6Y0G,K
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ]h6<o*
//Utility.log(in.readLine()); tEl_A"^e
sHeader=httpConnection.getHeaderFieldKey(i); c9V'Z d#
if(sHeader!=null) {1[8,Ho
{ %Ok.XBS)
if(sHeader.equals("Content-Length")) ND*5pRzvp
{ %0QYkHdFR`
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); "PPwJ/L(
break; 2cL<`
} nm..$QL
} Yhfk{ CI
else t"Rn#V\c."
break; (#~063N,#
} %"D-1&%zY
} %-D2I
catch(IOException e){e.printStackTrace ();} eo!{rs@f
catch(Exception e){e.printStackTrace ();} umk[\}Ip+P
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Utility.log(nFileLength); oID,PB*9
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return nFileLength; 7o3f5"z
} JXrMtSp\
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//保存下载信息(文件指针位置) zKo,B/Ke4
private void write_nPos() 6Y=)12T
{ i{.!1i:
try{ [||$1u\%
output = new DataOutputStream(new FileOutputStream(tmpFile)); raCxHY
output.writeInt(nStartPos.length); B^Vb=* QRo
for(int i=0;i<nStartPos.length;i++) y7JJ[:~~
{ SyI#Q[f'_
// output.writeLong(nPos); \O56!,k
output.writeLong(fileSplitterFetch.nStartPos); 9496ayi
output.writeLong(fileSplitterFetch.nEndPos); 6v-h!1p{u
} YvonZ
output.close(); p4=^
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} ] '..G-
catch(IOException e){e.printStackTrace ();} umY4tNe]$
catch(Exception e){e.printStackTrace ();} sNWj+T
} /}Max@.`
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//读取保存的下载信息(文件指针位置) B|tP3<
private void read_nPos() cOcm9m#
{ 5=eGiF;0\
try{ P69S[aqW
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 7+fFKZFKF
int nCount = input.readInt(); i9Qx{f88
nStartPos = new long[nCount]; 3/iGSG`
nEndPos = new long[nCount]; U.&=b<f(0r
for(int i=0;i<nStartPos.length;i++) ,Ao8QN
{ SKGYmleR
nStartPos = input.readLong(); vq|W&
nEndPos = input.readLong(); )l^w _;
} K:mb$YJ&
input.close(); \%UA6uj
} C+_ NG
catch(IOException e){e.printStackTrace ();} _("{fJ,A
catch(Exception e){e.printStackTrace ();} o`G@Je_}x
} 1Ypru<.)W
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private void processErrorCode(int nErrorCode) n<MH\.!tM
{ Xr-eDUEi
System.err.println("Error Code : " + nErrorCode); *+5AN306
} y 2bZo'Z
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//停止文件下载 )!'SSVaRs
public void siteStop() @X:P`?("^
{ bV}43zI.
bStop = true; vI4St;
for(int i=0;i<nStartPos.length;i++) t ;(kSg.
fileSplitterFetch.splitterStop(); cJ&%XN
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} C;_10Rb2ut
} }{s<!b
//负责部分文件的抓取 jlItPdCv
**FileSplitterFetch.java bEbnZ<kz*
*/ m3 ,i{
package NetFox; YoJN.],gf
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import java.io.*; -3A#a_fu
import java.net.*; xI$B",?(
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public class FileSplitterFetch extends Thread { HKV]Rn
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String sURL; //File URL T0i_X(_
long nStartPos; //File Snippet Start Position ]oj
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long nEndPos; //File Snippet End Position 0Db#W6*^
int nThreadID; //Thread's ID *G^QS"%
boolean bDownOver = false; //Downing is over s/8>(-H#
boolean bStop = false; //Stop identical Z':}ZXy]
FileAccessI fileAccessI = null; //File Access interface -
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException npZ=x-ce
{ qlO(z5Ak
this.sURL = sURL; vn7<>k>dx
this.nStartPos = nStart; >O?5mfMK
this.nEndPos = nEnd; ex1b jM7
nThreadID = id; |\J8:b>}
fileAccessI = new FileAccessI(sName,nStartPos);//定位 !>TH#sU$
} s+l)Q
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public void run() zrri&QDF<
{ 1d,;e:=j
while(nStartPos < nEndPos && !bStop) I8rtta
{ "aHA6zTB
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try{ C[z5&
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URL url = new URL(sURL); t[|^[%i
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); q3n(Z
httpConnection.setRequestProperty("User-Agent","NetFox"); )Z2HzjE
String sProperty = "bytes="+nStartPos+"-"; X H,1\J-S
httpConnection.setRequestProperty("RANGE",sProperty); F<VoPqHq
Utility.log(sProperty); Q0s!]Dk
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InputStream input = httpConnection.getInputStream(); Ou>L|#=!
//logResponseHead(httpConnection); 0P_qtS
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byte[] b = new byte[1024]; '#L.w6<B
int nRead; g)nsP
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) FMhSHa/B
{ RX3P%xZ
nStartPos += fileAccessI.write(b,0,nRead); v!JQ;OX
//if(nThreadID == 1) BxVo>r
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 0rP`BK|
} $9)| cO
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Utility.log("Thread " + nThreadID + " is over!"); S3l$\X;6X
bDownOver = true; :+: vBrJm
//nPos = fileAccessI.write (b,0,nRead); eD2u!OKW!
} D-JG0.@
catch(Exception e){e.printStackTrace ();} =^#^Mq)
} b;A(6^V
} u czOSd
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//打印回应的头信息 ZUPlMHc
public void logResponseHead(HttpURLConnection con) pCb3^# &o
{ /Sy:/BQ
for(int i=1;;i++) WrP4*6;"
{ /i.3v45t"
String header=con.getHeaderFieldKey(i); ~;>
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if(header!=null) 6HeZ<.d&
//responseHeaders.put(header,httpConnection.getHeaderField(header)); m_
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Utility.log(header+" : "+con.getHeaderField(header)); OFH!z{*
else ?Zu2=<DU
break; 9O1#%
} C{^U^>bU
} f}qR'ognUu
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