/* f7Ul(D:j\
**SiteFileFetch.java UR:aD_h
*/ O1')nYF7
package NetFox; tx?dIy;
import java.io.*; </uOe.l>Q
import java.net.*; >-&R47G
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public class SiteFileFetch extends Thread { >#ZUfm{k$
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SiteInfoBean siteInfoBean = null; //文件信息Bean P`r55@af4
long[] nStartPos; //开始位置 d[rv1s>i
long[] nEndPos; //结束位置 a >\vUv*
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Ym;*Y !~[
long nFileLength; //文件长度 cqxVAzb
boolean bFirst = true; //是否第一次取文件 8Sz})UZ
boolean bStop = false; //停止标志 Z{?G.L*/
File tmpFile; //文件下载的临时信息 s3Cc;#
DataOutputStream output; //输出到文件的输出流 JTi!Xu5Jq
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 8p[)MiC5W^
public SiteFileFetch(SiteInfoBean bean) throws IOException Vh>Z,()>>@
{ p~LrPWHSTP
siteInfoBean = bean; n~VD uKn9
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); <nEi<iAY>U
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); G
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if(tmpFile.exists ()) f6$b
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{ q -8t'7
bFirst = false; 3Hf0MAt
read_nPos(); .s$z/Jv
} D7_*k%;@
else VK@!lJu!
{ Q1@A2+ c
nStartPos = new long[bean.getNSplitter()]; 9mZ
nEndPos = new long[bean.getNSplitter()]; |7x\m t
} yA47"R
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} /dnCwFXf
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public void run() )>BHL3@
{ $.]l!cmi%Q
//获得文件长度 86nN"!{l:
//分割文件 arf8xqR-U]
//实例FileSplitterFetch +^;JS3p@\
//启动FileSplitterFetch线程 <$JaWL
//等待子线程返回 s(W|f|R
try{ +{/
if(bFirst) g}]t[}s1]
{ # W"=ry3{
nFileLength = getFileSize(); ?6'rBH/w
if(nFileLength == -1) rj!0GI
{ 1'?4m0W1
System.err.println("File Length is not known!"); utr:J
} Y))NK'B5
else if(nFileLength == -2) J=/5}u_gw
{ *2jK#9"MP
System.err.println("File is not access!"); r&FDEBh
} Yw0[[N<SW
else Ewg:HX7<(
{ R##~*>#
for(int i=0;i<nStartPos.length;i++) mc4i@<_?
{ %.Q
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); {z|;Xi::"
} .`&F>o(A
for(int i=0;i<nEndPos.length-1;i++) 5ZBKRu
{ AlJ} >u
nEndPos = nStartPos[i+1]; r(9~$_(vK
} XVU2T5s}
nEndPos[nEndPos.length-1] = nFileLength; kZ"BBJ6w
} R
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} Z(Jt~a3o
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//启动子线程 K$d$m <
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; /&4U6a
for(int i=0;i<nStartPos.length;i++) ={u0_j
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{ ~y7jCcd`
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), m4*@o?Ow
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), G z)NwD
nStartPos,nEndPos,i); 2it?$8#i
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 3h<,
fileSplitterFetch.start(); ]kboG%Dl?9
} RD.V'`n"
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), I|Gp$uq _
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Rn@#d}
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", A~mum+[5
nEndPos = " + nFileLength); #Skv(IL
// fileSplitterFetch[nPos.length-1].start(); M'/aZ#
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//等待子线程结束 n93=8;&
//int count = 0; 9YBv|A
//是否结束while循环 aFLO{t r`
boolean breakWhile = false; 5scEc,JCi
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while(!bStop) Qa.uMq
{ &y#r;L<9
write_nPos(); /soKucN"h
Utility.sleep(500); #BSTlz
breakWhile = true; )(@Hd
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for(int i=0;i<nStartPos.length;i++) @/1w4'M
{ iJ~Vl"|m
if(!fileSplitterFetch.bDownOver) D:K4H+ch
{ nWHa.H#
breakWhile = false; =lpQnj"
break; @K!&qw
} !Ta>U^7
} 1</kTm/Qa
if(breakWhile) [
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break; `[n("7,
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//count++; h*<P$t
//if(count>4) ?y!E-&
// siteStop(); w[ ~#av9
} 6VhjJJ
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System.err.println("文件下载结束!"); !e?.6% %
} 7t*"%]o
catch(Exception e){e.printStackTrace ();} c?@T1h4
} OiP!vn}k
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//获得文件长度 4f;HQ-Iv
public long getFileSize() NhYLtw^u
{ Q6r7.pk"SU
int nFileLength = -1; pn^ d]rou?
try{ rX1QMR7?
URL url = new URL(siteInfoBean.getSSiteURL()); nt@aYXK4|
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); T|TO }_x
httpConnection.setRequestProperty("User-Agent","NetFox"); +="e]Yh;
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int responseCode=httpConnection.getResponseCode(); @qHNE,K
if(responseCode>=400) 6!(@@^7{*
{ Q0ON9gqqv
processErrorCode(responseCode); \0gM o&
return -2; //-2 represent access is error #KiRfx4G
} }3L@J8:D"
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String sHeader; jXMyPNTK
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for(int i=1;;i++) *~x/=.}
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 9,"L^W8"k
//Utility.log(in.readLine()); ,11H.E
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sHeader=httpConnection.getHeaderFieldKey(i); *C:|X b<9
if(sHeader!=null) +PuPO9jKO@
{ #&7}-"Nd
if(sHeader.equals("Content-Length")) 2m2;t0
{ =7o"u3hG
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ?%y?rk <
break; )
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} Ck|8qUz-
} L;f!.FX#
else E\4 +_L_j
break; = MOj|NR [
} yT,.z 0
} ok4@N @
catch(IOException e){e.printStackTrace ();} 1{r)L{]
catch(Exception e){e.printStackTrace ();} EB8\_]6XJ
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Utility.log(nFileLength); .?Gd'Lp
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return nFileLength; #"5 Dk#@
} aqc?pqM
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//保存下载信息(文件指针位置) E 0?iXSJ
private void write_nPos() ])!o5`ltZ
{ a0ObBe'
try{ ;{"+g)u
output = new DataOutputStream(new FileOutputStream(tmpFile)); 81i655!Z
output.writeInt(nStartPos.length); L#
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for(int i=0;i<nStartPos.length;i++) 7fba-7-P
{ w2'f/
// output.writeLong(nPos); pn5Q5xc
output.writeLong(fileSplitterFetch.nStartPos); K]0JC/R6(@
output.writeLong(fileSplitterFetch.nEndPos); `u&Zrdr,
} gjAIEI
output.close(); ixT:)|'i
} E L9]QI
catch(IOException e){e.printStackTrace ();} B,=H@[Fj
catch(Exception e){e.printStackTrace ();} /x1![$oC0
} fk x \=
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//读取保存的下载信息(文件指针位置) :d#VE-e
private void read_nPos() AQiwugs
{ eXf22;Lz
try{ b8LLr;oQw
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); y`XU~B)J1
int nCount = input.readInt(); wLOB}ZMT
nStartPos = new long[nCount]; 9^G/8<^^>
nEndPos = new long[nCount]; Aw5HF34J
for(int i=0;i<nStartPos.length;i++)
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{ Gnq?"</
nStartPos = input.readLong(); }=]M2}
nEndPos = input.readLong(); 3S}Pm2D2
} w_{wBL[3e
input.close(); hK,Sf ;5V
} pj?f?.^
catch(IOException e){e.printStackTrace ();} 7w6cwHrL@
catch(Exception e){e.printStackTrace ();} Evjj"h&0J
} ~15N7=wCM
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private void processErrorCode(int nErrorCode) De(Hw&
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{ x}"uZ$g
System.err.println("Error Code : " + nErrorCode); %YC_Se7
} W|g4z7Pb
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//停止文件下载 /Id%_,}Kb
public void siteStop() [.uG5%fa
{ K8UP,f2
bStop = true; %*0^0wz
for(int i=0;i<nStartPos.length;i++) 8Y7Q+p|O
fileSplitterFetch.splitterStop(); >^*+iEe
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} @3C>BLI8+
} =t H:,SH
//负责部分文件的抓取 5?F__Hx*2
**FileSplitterFetch.java jGpN,/VQa
*/ Tw;3_Lj
package NetFox; ([m
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import java.io.*; ;CPr]avY
import java.net.*; [J4gH^Z_
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public class FileSplitterFetch extends Thread { )]H-BIuGm
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String sURL; //File URL e3nYbWBy]
long nStartPos; //File Snippet Start Position P>NF.BCq
long nEndPos; //File Snippet End Position g9Xu@N;bL
int nThreadID; //Thread's ID K+3IWZ&+dG
boolean bDownOver = false; //Downing is over 9{5&^RbCp
boolean bStop = false; //Stop identical [nrYpb4
FileAccessI fileAccessI = null; //File Access interface C8V/UbA
/
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 'z%o16F)L
{ <YhB8W9 P
this.sURL = sURL; ZL&g_jC
this.nStartPos = nStart; W;!}#o|%s
this.nEndPos = nEnd; K,:cJ
nThreadID = id; ]);%wy{Ho
fileAccessI = new FileAccessI(sName,nStartPos);//定位 uP~@U" !
} Vt".%d/`7
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public void run() {pnS Q
{ 3@M|m<_R$
while(nStartPos < nEndPos && !bStop) { +
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{ Pa
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try{ B1>/5hV}
URL url = new URL(sURL); 8TLgNQP
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); z6jc8Z=O
httpConnection.setRequestProperty("User-Agent","NetFox"); (nlvl?\d
String sProperty = "bytes="+nStartPos+"-"; XF;ES3 d
httpConnection.setRequestProperty("RANGE",sProperty); Of[XKFn_
Utility.log(sProperty); 3TY5 ;6
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InputStream input = httpConnection.getInputStream(); `Nb[G)Xh
//logResponseHead(httpConnection); XkXHGDEf 1
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byte[] b = new byte[1024]; ,D]QxbwZ
int nRead; pgE}NlW
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) v*SEb~[
{ LSGBq
nStartPos += fileAccessI.write(b,0,nRead); B&[M7i
//if(nThreadID == 1) W;'!gpa
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); VcSVu
} \KQ71yqY
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Utility.log("Thread " + nThreadID + " is over!"); b\$}>O
bDownOver = true; Rv$[)`&T
//nPos = fileAccessI.write (b,0,nRead); clL2k8VS
} qB0E_y)a
catch(Exception e){e.printStackTrace ();} O4cr*MCb5
} d4>Z8FF|1B
} Ay5i+)MD
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//打印回应的头信息 $c:ynjL|P-
public void logResponseHead(HttpURLConnection con) Vzdh8)Mu\
{ #Ssx!+q?
for(int i=1;;i++) mpuq 9)6
{ YaKeq5%y
String header=con.getHeaderFieldKey(i); Tgm nG/Z
if(header!=null) ;CmS ~K:
//responseHeaders.put(header,httpConnection.getHeaderField(header)); s;S?;(QI
Utility.log(header+" : "+con.getHeaderField(header)); XWS%zLaK
else j/r]wd"aUS
break; w$z}r
} g*e
} BFL`!^
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