/* tC=`J%Ik
**SiteFileFetch.java prC1<rm
*/ xCOC5f5*@
package NetFox; CR-6}T
import java.io.*; QJaF6>m
import java.net.*; XD8MF)$9
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public class SiteFileFetch extends Thread { CmNd0S4v
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SiteInfoBean siteInfoBean = null; //文件信息Bean 8tM40/U$
long[] nStartPos; //开始位置 DJv;ed%x
long[] nEndPos; //结束位置 qe!\ oh
FileSplitterFetch[] fileSplitterFetch; //子线程对象 S'jH
long nFileLength; //文件长度 u*ZRU
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boolean bFirst = true; //是否第一次取文件 fBptjt_
boolean bStop = false; //停止标志 Vn`-w
File tmpFile; //文件下载的临时信息 etEm#3
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) k{op ,n#
public SiteFileFetch(SiteInfoBean bean) throws IOException 1%YjY"j+
{ Khbkv
siteInfoBean = bean; ab 1qcQ<
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); EPQ~V
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); l;I)$=={=
if(tmpFile.exists ()) d85\GEF9i
{ ?t&sT
bFirst = false; 38wt=0br
read_nPos(); `3Gjj&c
} %d5;JEgA:g
else '[ZRWwhr
{ cC.=,n
nStartPos = new long[bean.getNSplitter()]; l@8UL</W
nEndPos = new long[bean.getNSplitter()]; F
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} H1(Zzn1
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} ^<8
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public void run() FF"6~
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//获得文件长度 OIK14D:
//分割文件 ,r{[l D^
//实例FileSplitterFetch ps#+i
//启动FileSplitterFetch线程 Im;8Abf
//等待子线程返回 9{?L3V!+r
try{ }nDKSC/[V!
if(bFirst) YlW~
{ oJ cR)H
nFileLength = getFileSize(); $'I+] ;
if(nFileLength == -1) E$-u:Z<-
{ !$"DD[~\
System.err.println("File Length is not known!"); 2 0Xqs,
} h*_h M1 *;
else if(nFileLength == -2) e Ir|%
{ W|K"0ab
System.err.println("File is not access!"); :/N/u5.]
} 1nv#Ehorg
else S4j` =<T,
{ yv:8=.r}M
for(int i=0;i<nStartPos.length;i++) <MhjvHg
{ !c`KzqP
nStartPos = (long)(i*(nFileLength/nStartPos.length)); B5>1T[T'-
} >^#OtFHuT)
for(int i=0;i<nEndPos.length-1;i++) "T/
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{ 289@O-
nEndPos = nStartPos[i+1]; jXEuK:exQ
} Lw
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nEndPos[nEndPos.length-1] = nFileLength; |sN>/89=/
} [E_eaez7#
} ~+1t3M e
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//启动子线程 ;\@co5.=
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; olNgtSX
for(int i=0;i<nStartPos.length;i++) T~%}(0=m
{ ), >jBYMJ
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 3siWq9.
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), @V/Lqia
nStartPos,nEndPos,i); ;2||g8'
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); -c-#1_X5
fileSplitterFetch.start(); C WJGr:}&
} En:.U9?X
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), bkQEfx.
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); \ltA&}!
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", [|gh q
nEndPos = " + nFileLength); 2IgTB|2
// fileSplitterFetch[nPos.length-1].start(); D-8NDa(`
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//等待子线程结束
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//int count = 0; bT|NZ!V
//是否结束while循环 I#0WN
boolean breakWhile = false; j9zK=eG
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p`//
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while(!bStop) Byf5~OC
{ pyEi@L1p
write_nPos(); T:ye2yg
Utility.sleep(500); - aCtk$3
breakWhile = true; d'~sy>
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for(int i=0;i<nStartPos.length;i++) 6fvzTd},
{ >hcA:\UPk
if(!fileSplitterFetch.bDownOver) VeixwGZ.
{ c[:OK9TH
breakWhile = false; SG1o<#>
break; >[ r
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} aa8xo5tIp
} (fmcWHs
if(breakWhile) s;'XX}Y
break; Qe=,EXf
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//count++; I^iJ^Z]vx
//if(count>4) F+A"-k_\T#
// siteStop(); X {,OP/
} PI>PEge!&
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System.err.println("文件下载结束!"); s hbPy
} Nz`4q%+
catch(Exception e){e.printStackTrace ();} S<"M5e
} nQuiRTU<
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//获得文件长度 8spoDb.S
public long getFileSize() pkjf5DWp
{ I@VhxJh
int nFileLength = -1; iB[>uW
try{ }mRus<Ax
URL url = new URL(siteInfoBean.getSSiteURL()); >
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection ();
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httpConnection.setRequestProperty("User-Agent","NetFox"); xaO9?{O
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int responseCode=httpConnection.getResponseCode(); rzJNHf=FVY
if(responseCode>=400) QUL^]6$
{ @OOnO+g
processErrorCode(responseCode); %c%0pGn8-
return -2; //-2 represent access is error =[8EQdR
} BZy&;P
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String sHeader; ?bc-?<Xk
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for(int i=1;;i++) T9r"vw
{ -"qw5Y_oF?
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ());
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//Utility.log(in.readLine()); Fj\}&H*+
sHeader=httpConnection.getHeaderFieldKey(i); %,$Ms?,n`
if(sHeader!=null) 7a_pO1MBL
{ |;2Y|>=
if(sHeader.equals("Content-Length")) {UpHHH:X#
{ -<kl d+
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 2Y_ `&
break; VuqN)CE^Uq
} OU;R;=/]
} >$,A [|R
else /C(lQs*l
break; .'o<.\R8
} h&eu}aF
} !@mV$nTA
catch(IOException e){e.printStackTrace ();} dkTj
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catch(Exception e){e.printStackTrace ();} z -|gw.y
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Utility.log(nFileLength); ok;Y xp>
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return nFileLength; [:gPp)f,
} NpV#zzE
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//保存下载信息(文件指针位置) ^)ouL25Z*2
private void write_nPos() E"!I[
{ yM$@*od
try{ ~=h M y`Ml
output = new DataOutputStream(new FileOutputStream(tmpFile)); CJ B
output.writeInt(nStartPos.length); V4cCu~(3;~
for(int i=0;i<nStartPos.length;i++) [+0rlmB
{ Va^Y3/
// output.writeLong(nPos); Z;kRQ
output.writeLong(fileSplitterFetch.nStartPos); V@gweci
output.writeLong(fileSplitterFetch.nEndPos); F"2v5F@
} mdxa^#w
output.close(); 1e`/N+6u
} Df;EemCh
catch(IOException e){e.printStackTrace ();} >|%dN
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catch(Exception e){e.printStackTrace ();} RUcpdeo
} /]H6'
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//读取保存的下载信息(文件指针位置) c$?(zt;
private void read_nPos() PW(4-H
{ 1iWo*+5
try{ f%n],tE6
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); o>rsk
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int nCount = input.readInt(); Jy&O4g/'5
nStartPos = new long[nCount]; [{.e1s<EK
nEndPos = new long[nCount]; XWH{+c"
for(int i=0;i<nStartPos.length;i++) Il(p!l<Xz#
{ 5W/!o&x~7
nStartPos = input.readLong(); _`yd"0Ux
nEndPos = input.readLong(); pME17 af
} ZH8O%>!
input.close(); yOKpi&! r
} shjc`Tqm
catch(IOException e){e.printStackTrace ();} 5\RTy}w3x
catch(Exception e){e.printStackTrace ();} L:$kd `v[
} KT1/PWa
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private void processErrorCode(int nErrorCode) MfNxd
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{ \]Nlka
System.err.println("Error Code : " + nErrorCode); VC%{qal;q
} C!KxY/*Px
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//停止文件下载 7_Yxz$m
public void siteStop() I&9_F%rX
{ "YU<CO;4VV
bStop = true; 8bQ\7jb
for(int i=0;i<nStartPos.length;i++) "`P/j+-rt
fileSplitterFetch.splitterStop(); `#O%ZZ+
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} U5 X\RXy~
} lJaR,,
//负责部分文件的抓取 j`JY3RDD
**FileSplitterFetch.java W;~ f865
*/ Dqss/vwV
package NetFox; %@/"BF;r
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import java.io.*; A-5xgp,
import java.net.*; /Y=Cg%+
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public class FileSplitterFetch extends Thread { ^)$(Fe<
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String sURL; //File URL ${(v
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long nStartPos; //File Snippet Start Position -$W#bqvz^
long nEndPos; //File Snippet End Position Co|3k:I 8
int nThreadID; //Thread's ID uTsxSkHb/
boolean bDownOver = false; //Downing is over s"u6po.'
boolean bStop = false; //Stop identical Z(Styn/x
FileAccessI fileAccessI = null; //File Access interface a?Q\nu1
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException aYTVYg
{ ^L}ICm_#
this.sURL = sURL; a]0B{
this.nStartPos = nStart; bf1Tky=/
this.nEndPos = nEnd; ODvlix
nThreadID = id; U^qQ((ek
fileAccessI = new FileAccessI(sName,nStartPos);//定位 GyU9,>|~T
} XO[S(q
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public void run() -Jqm0)2
{ BE,XiH;
while(nStartPos < nEndPos && !bStop) ?`9XFE~a!
{ m\9R;$\
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try{ _+c' z
URL url = new URL(sURL); Be~__pd
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); nV/8u_
httpConnection.setRequestProperty("User-Agent","NetFox"); zK Rt\;PW
String sProperty = "bytes="+nStartPos+"-"; Ew`(x30E
httpConnection.setRequestProperty("RANGE",sProperty); r~mZ?dI
Utility.log(sProperty); ;<=Z\NX
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InputStream input = httpConnection.getInputStream(); >"LHr&;m&h
//logResponseHead(httpConnection); ^HS;\8Xvb
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byte[] b = new byte[1024]; 4XL$I*;4
int nRead; zL8Z8eh">
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) G
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{ k2bjBAT
nStartPos += fileAccessI.write(b,0,nRead); ^?+qNbK
//if(nThreadID == 1) ]~a;tF>Fw
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 7j,-o
} kSW=DE|#}
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Utility.log("Thread " + nThreadID + " is over!"); HgGwV;W
bDownOver = true; =g.R?H8cj5
//nPos = fileAccessI.write (b,0,nRead); fL xGaOT
} h#hx(5"6
catch(Exception e){e.printStackTrace ();} 9Wu c1#
} tLH:'"{zx
} _\/KI
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//打印回应的头信息 LDDgg
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public void logResponseHead(HttpURLConnection con) &7\=Jw7w
{ W8blHw"
for(int i=1;;i++) lF[m*}l
{ 5taR[ukM
String header=con.getHeaderFieldKey(i); rCK
if(header!=null) XC(:O(jdA2
//responseHeaders.put(header,httpConnection.getHeaderField(header)); ]!c59%f=
Utility.log(header+" : "+con.getHeaderField(header)); }4uHT.)
else /b1+ ^|_
break; "U"phLX
} }}Zwdpo
} -gQtw%
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public void splitterStop() c;X%Ar
{ f]pHJVgFV
bStop = true; #ORZk6e
} @=7[ KM b
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} @Ojbu@A
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/* -lY,lC>{
**FileAccess.java 70GwTK.{~
*//文件访问(定位,写) %jE0Z4\
package NetFox; &ir|2"HV
import java.io.*; I[6ft_*
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public class FileAccessI implements Serializable{ lC=-1*WH
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 4<j7F4
RandomAccessFile oSavedFile; 2/iBk'd
long nPos; &At9@
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public FileAccessI() throws IOException | |u
{ [t6Y,yo&h4
this("",0); ^, &'
} &s(mbpV
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public FileAccessI(String sName,long nPos) throws IOException #AR$'TE#
{ S"cim\9xP
oSavedFile = new RandomAccessFile(sName,"rw"); {.j030Q
this.nPos = nPos; S l`F`
oSavedFile.seek(nPos); FvJkb!5*e_
} G@3Jw[t
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public synchronized int write(byte[] b,int nStart,int nLen) NI:3hfs
{ ]&?8l:3-G
int n = -1; 9'=ZxV
try{ "$n ff=]
oSavedFile.write(b,nStart,nLen); c :2 w(BVi
n = nLen; &X6hOc:``\
} =3Ohy,5L
catch(IOException e) `< 82"cAT{
{ #=T^XHjQ
e.printStackTrace (); [VE>{4]W
} z[qi~&7:v
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return n; r+usMF<'
} \iA.{,VX
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} `n"PHur
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/* A[`2Mnj
**SiteInfoBean.java oL7F^34;
*/ IQWoK"B
package NetFox; X4JSI%E
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public class SiteInfoBean { M0t9`Z9
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private String sSiteURL; //Site's URL D?G'1+RIT~
private String sFilePath; //Saved File's Path +q%b'!&Q
private String sFileName; //Saved File's Name (W.G&VSn)
private int nSplitter; //Count of Splited Downloading File ')TS'p,n
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public SiteInfoBean() lMgPwvs'
{//nSplitter的缺省值为5 m86ztP)
//default value of nSplitter is 5 Y(Y#H$w
this("","","",5); vwzElZ{C:v
} + (Jh$b_
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) V@nZ_.
{ * ).YU[i
sSiteURL= sURL; ;u=%Vn"2a
sFilePath = sPath; !AG {`[b
sFileName = sName; MS]Q\g}U
this.nSplitter = nSpiltter; 72vp6/;)
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} Yq'D-$@
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public String getSSiteURL() J06D_'{
{ W![~"7?
return sSiteURL; A1*\ \[
} :x3xeVtY
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public void setSSiteURL(String value) ?I u=os>*
{ &