/* Z.
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**SiteFileFetch.java l's*HExR
*/ sW]fPa(cn,
package NetFox; aJ^RY5
import java.io.*; ]KE"|}B
import java.net.*; B(h%>mT[
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public class SiteFileFetch extends Thread { %uy5la
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SiteInfoBean siteInfoBean = null; //文件信息Bean X{G&r$
long[] nStartPos; //开始位置 #1oyRD-
long[] nEndPos; //结束位置 5'zD}[2
FileSplitterFetch[] fileSplitterFetch; //子线程对象 jM!Q
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long nFileLength; //文件长度 3r-oZ8/n
boolean bFirst = true; //是否第一次取文件 $;%k:&\f
boolean bStop = false; //停止标志 :M
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File tmpFile; //文件下载的临时信息 8%Hc%T[RnT
DataOutputStream output; //输出到文件的输出流 lLi)?
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) %{HeXe
public SiteFileFetch(SiteInfoBean bean) throws IOException DA wUG
{ $Cx ?%X^b
siteInfoBean = bean; GjH$!P=.
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Ny2. C?2
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); pW4$$2S?9
if(tmpFile.exists ()) {ZIEIXWb2
{ >#~>!cv6D
bFirst = false; YwnYTt
read_nPos(); oZwu`~h Y
} g?i0WS
else "9bd;Tt:
{ vkE a[7
nStartPos = new long[bean.getNSplitter()]; ]<Kkq!
nEndPos = new long[bean.getNSplitter()]; "';K$&,[
} *~SanL\
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} ]L{diD2G
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public void run() ]CxDm
{ zSo(+ D
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//获得文件长度 U~1)a(Yu;
//分割文件 )
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//实例FileSplitterFetch g`\5!R1
//启动FileSplitterFetch线程 P}8cSX9
//等待子线程返回 R;3nL[{U
try{ ^bG91"0A
if(bFirst) !@3"vd{^
{ _`.Wib+
nFileLength = getFileSize(); Ev>P|kV&A
if(nFileLength == -1) 2D)B%nM[
{ 'B yB1NL
System.err.println("File Length is not known!"); It:,8
} 6%L#FSI
else if(nFileLength == -2) !j%MN{#a
{ ^bk:g}o
System.err.println("File is not access!"); Fv$oXg/
} :e rfs}I
else V
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{ 7 F> a&r
for(int i=0;i<nStartPos.length;i++) K;j0cxl
{ 45A|KaVpg
nStartPos = (long)(i*(nFileLength/nStartPos.length)); gJBw6'Z
} <\`qRz0/
for(int i=0;i<nEndPos.length-1;i++) "el}9OitC
{ ~1:_wni
nEndPos = nStartPos[i+1]; ^2C
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} yIYQ.-DkS+
nEndPos[nEndPos.length-1] = nFileLength; _?v&\j
} !q!5D`
} h,|. qfUk
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//启动子线程 <%?!3 n*
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; c"lblt5
for(int i=0;i<nStartPos.length;i++) QERj`/g
{ w:aV2
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Z;~ 7L*|
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), S\L^ZH?[2
nStartPos,nEndPos,i); H/}W_ h^^
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); bJoP@s
fileSplitterFetch.start(); +$$5Cv5#<&
} &lnM
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), fUq:`#Q
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); J_ 7#UjGA,
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", /tj_WO_
nEndPos = " + nFileLength); bXi(]5
// fileSplitterFetch[nPos.length-1].start(); suHisc*
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//等待子线程结束 =z zmz7op
//int count = 0; `Z^\<{z
//是否结束while循环 [JYy
boolean breakWhile = false; P&IS$FC.\
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while(!bStop) &}r-C97
{ qs{wrem
write_nPos(); >|aVGY
Utility.sleep(500); KAg-M#
breakWhile = true; Fv<3VKueK[
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for(int i=0;i<nStartPos.length;i++) =[,EFkU?B
{ MdhD "Q
if(!fileSplitterFetch.bDownOver) Q zp!)i
{ MY'T%_id
breakWhile = false; B ?l0u
break; 9Ed=`c
} k)R~o
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} SP"t2LTP
if(breakWhile) c 5 `74g
break; U".5x~UC
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//count++; +GncQs
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//if(count>4) F^.~37=@
// siteStop(); Q^*4FH!W
} Irui{%T
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System.err.println("文件下载结束!"); L7[f-cK2:
} OXnTD!m>{
catch(Exception e){e.printStackTrace ();} m-bu{
} }W0_eQ
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//获得文件长度 ?&!e
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public long getFileSize() , Xxp]*K2
{ .}Eckqkp
int nFileLength = -1; 6O_l;A[=1
try{ NOmFQ)/ &
URL url = new URL(siteInfoBean.getSSiteURL()); nNf*Q
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); *7w!~mn[m
httpConnection.setRequestProperty("User-Agent","NetFox"); aNBwb9X
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int responseCode=httpConnection.getResponseCode(); md `=2l
if(responseCode>=400) zkquXzlgB
{ >qBJK)LHOv
processErrorCode(responseCode); ~n$\[rQ
return -2; //-2 represent access is error Ehxu`>@N
} :D4'x{#H
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String sHeader; TKQ^D
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for(int i=1;;i++) {eVv%sbq
{ `O5427Im
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); #r/5!*3
//Utility.log(in.readLine());
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sHeader=httpConnection.getHeaderFieldKey(i); I^HwXp([
if(sHeader!=null) $z`l{F4eMf
{ "L!U7|9J
if(sHeader.equals("Content-Length")) N>CNgUyP
{ :| !5d{8S8
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Sp2DpGs~
break; 9Y@ eXP
} B#?rW*yEe
} 'S|7<<>4k
else +,cd$,18
break; ra2{8 x
} wbvOf X
} ksTK'7*
catch(IOException e){e.printStackTrace ();} 4)8e0L*[B?
catch(Exception e){e.printStackTrace ();} HYL['B?Wid
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Utility.log(nFileLength); 4Y1dkg1y
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return nFileLength; !^o{}*]Pi
} Te`@{>
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//保存下载信息(文件指针位置) 2j#Dwa(lZQ
private void write_nPos() U#&+n-npO
{ Kr[oP3
try{ s4QCun~m
output = new DataOutputStream(new FileOutputStream(tmpFile)); )%PMDG|
output.writeInt(nStartPos.length); {pA&Q{ ^
for(int i=0;i<nStartPos.length;i++) mi.,Z`]o
{ 3@:O1i
// output.writeLong(nPos); MkhD*\D
/
output.writeLong(fileSplitterFetch.nStartPos); )+DDIq
output.writeLong(fileSplitterFetch.nEndPos); w!z*?k=Da
} X%iJPJLza
output.close(); K7@|2;e
} JPHM+3v
catch(IOException e){e.printStackTrace ();} evpy%/D
catch(Exception e){e.printStackTrace ();} <LzxnTx=
} V%z?wDC
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//读取保存的下载信息(文件指针位置) <EQaYZY=
private void read_nPos() z;y{QO
{ (z8;J>7
try{ R7K`9 c1f6
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Fq_>}k@fI
int nCount = input.readInt(); ,L lYRj 5
nStartPos = new long[nCount]; #oR`_Dm)P
nEndPos = new long[nCount]; ^B%c3U$o
for(int i=0;i<nStartPos.length;i++) g"k4Z
{ 2r;h">
nStartPos = input.readLong(); ca3SE^
nEndPos = input.readLong(); q"6$#o{~U
} IUDH"~f
input.close(); 5423Ky<
} wlsx|
catch(IOException e){e.printStackTrace ();} ;^u,[d
catch(Exception e){e.printStackTrace ();} _C(fz CK
} :U *8S\$
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private void processErrorCode(int nErrorCode) N/ '
{ .ZV='i()X
System.err.println("Error Code : " + nErrorCode); Srz8sm;
} sp
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//停止文件下载 NbTaI{r
public void siteStop() wy
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{ ^<;CIXo
bStop = true; Tl'wA^~H
for(int i=0;i<nStartPos.length;i++) r>7+&s*yk
fileSplitterFetch.splitterStop(); ^y qRa&
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} ,Q3OQ[Nmh
} MBU|<tc
//负责部分文件的抓取 ;']u}Nh
**FileSplitterFetch.java @x!,iT
*/ KO~KaN
package NetFox; nlI3|5
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import java.io.*; l qwy5#
import java.net.*; [z ]P5
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public class FileSplitterFetch extends Thread { g1}:;VG=
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String sURL; //File URL %8h=_(X\7
long nStartPos; //File Snippet Start Position M:/(~X{?
long nEndPos; //File Snippet End Position /e[m;+9^&
int nThreadID; //Thread's ID zi3v,Kq
boolean bDownOver = false; //Downing is over iETUBZ
boolean bStop = false; //Stop identical ~[dL:=?c
FileAccessI fileAccessI = null; //File Access interface }A,!|m4
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException c"-X:m"
{ XzSl"U PYH
this.sURL = sURL; @eeI4Jz
this.nStartPos = nStart; U,Uy0s2r
this.nEndPos = nEnd; od5nRb
nThreadID = id; m;\nMdn
fileAccessI = new FileAccessI(sName,nStartPos);//定位 \#LDX,=
} rab$[?]
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public void run() TfT^.p*
{ ?jUgDwc(w
while(nStartPos < nEndPos && !bStop) /3Gq&[R{
{ ZOcpF1y
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try{ 9#:fQ!3`
URL url = new URL(sURL); +_$s9`@]6
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); xw_klHL-o
httpConnection.setRequestProperty("User-Agent","NetFox"); pe0ax-Zv
String sProperty = "bytes="+nStartPos+"-"; ]Idwy|eG
httpConnection.setRequestProperty("RANGE",sProperty); T4Vp0i
Utility.log(sProperty); ]'[:QGr
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InputStream input = httpConnection.getInputStream(); JVkuSIR>
//logResponseHead(httpConnection); m$^5{qpg
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byte[] b = new byte[1024]; ^)Awjj9
int nRead; Yl>Y.SO
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ;tVd+[8
{ r7g@(K
nStartPos += fileAccessI.write(b,0,nRead); "yh2+97l
//if(nThreadID == 1) hnB`+!
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); xvl{o
} #n{4f1TZ
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Utility.log("Thread " + nThreadID + " is over!"); )Z1&`rv
bDownOver = true; 9aLd!PuTN
//nPos = fileAccessI.write (b,0,nRead); gC(S(osF
} 4'dN7E1*f
catch(Exception e){e.printStackTrace ();}
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} <mlN\BcX;
} &g&,~Y/z;
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//打印回应的头信息 j0~am,yZ
public void logResponseHead(HttpURLConnection con) jT$J~MpHh
{ 6xtgnl#T
for(int i=1;;i++) uA[
:
{ TP {\V>*Yz
String header=con.getHeaderFieldKey(i); ^.iRU'{
if(header!=null) RV_I&HD!
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 2(0%{*m
Utility.log(header+" : "+con.getHeaderField(header)); _b&26!gl
else 1uN;JN
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break; (}6\_k[}m
} X,aRL6>r
} 6`Y:f[VB
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public void splitterStop() 4)D~S4{E5
{
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bStop = true; F"k`PF*b
} B>:U
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} lSaX!${R'T
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/* \P+^BG!
**FileAccess.java ]
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*//文件访问(定位,写) $%\6"P/64
package NetFox; qMVuFwPhi
import java.io.*; yOQae m^O
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public class FileAccessI implements Serializable{ \1joW#
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 dWkQ NFKF
RandomAccessFile oSavedFile; 'A.5T%n-
long nPos; (>A#|N1U
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public FileAccessI() throws IOException ;z9,c
{ #GlFm?/6K/
this("",0); +em!TO
} B-]bhA4|:
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public FileAccessI(String sName,long nPos) throws IOException '+{yg+#/wV
{ yp$jLBA
oSavedFile = new RandomAccessFile(sName,"rw"); -hW>1s<
this.nPos = nPos; Xwo+iZ(a
oSavedFile.seek(nPos); *9r(lmrfj
} kP[fhOpn
}"WovU{*s
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public synchronized int write(byte[] b,int nStart,int nLen)
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{ HP_h!pvx
int n = -1; %La7);SeY
try{ 7glf?oE
oSavedFile.write(b,nStart,nLen); Ewr2popK
n = nLen; T^#d;A
} *5oQZ".vA*
catch(IOException e) $dKfUlO
{ ww7nQ}H5(
e.printStackTrace (); rQ _cH
} z(Uz<*h8
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return n; a@jM%VZ
} OET/4(C
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} *&Iv Eu
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/* ]!^wB 3j
**SiteInfoBean.java HLqN=vE6
*/ +,YK}?e
package NetFox; NY<qoV
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public class SiteInfoBean { h>*3i#
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private String sSiteURL; //Site's URL K]B`&ih
private String sFilePath; //Saved File's Path |pBFmm*
private String sFileName; //Saved File's Name :TP4f
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private int nSplitter; //Count of Splited Downloading File +{=U!}3|
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public SiteInfoBean() PPV T2;9
{//nSplitter的缺省值为5 *2-b&PQR{
//default value of nSplitter is 5 {ixKc
this("","","",5); 6(7{|iY
} Q%q;=a
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) LNR1YC1c
{ k)D5>T
sSiteURL= sURL; }z/%b<o_
sFilePath = sPath; hNYO+LrI)
sFileName = sName; zQ,M795@EA
this.nSplitter = nSpiltter; I>l^lv&[+
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} g}Lm;gs!>
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public String getSSiteURL() Bf y
{ =&k[qqxg
return sSiteURL; 9pj6`5Zn@6
} /mp!%j~
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public void setSSiteURL(String value) zmD7]?|
{ t+F_/_"B
sSiteURL = value; N.Q}.(N0
} seAPVzWUU
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public String getSFilePath() ?RsPAL
{ x\ #K2
return sFilePath; p>J@"?%^
} 9S9j
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public void setSFilePath(String value) gzvgXZ1q"
{ 1'p=yHw
sFilePath = value; *'H\`@L
} m*B4a9f
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public String getSFileName() |N6.:K[`
{ K%
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return sFileName; \Ezcr=0z{j
} 3rHn?
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public void setSFileName(String value)
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{ iyR"O1]
sFileName = value; 9dAtQwGR"6
} `S-%}eUv
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public int getNSplitter() $.w$x1
{ OJA_OqVp$K
return nSplitter; ojm IEzsz
} aY.cx1"
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2
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public void setNSplitter(int nCount) .)WEg|D0Ku
{ (xTGt",_Jo
nSplitter = nCount; X}x\n\Z
} %#&njP
} [lSQMoi3
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/* j+
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**Utility.java `x >6Wk1
*/ ?VRsgV'$
package NetFox; ]2|fc5G'
4e|N^h*!
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public class Utility { Val"vUZ
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public Utility() +kE~OdZG
{ aqQ+A:g
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} Eld[z{n"
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//线程睡眠 \Z42EnJ
public static void sleep(int nSecond) `s
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{ HIE8@Rv/3
try{ }><[6Uz%
Thread.sleep(nSecond); 9MI9$s2y
} PXtF#,roP
catch(Exception e) 3XDU(#
{ }hg2}g99
e.printStackTrace (); W4k$m2
} @K*W3&