/* SF[}suL
**SiteFileFetch.java <!derr-K
*/ 6~a4-5;>z
package NetFox; Pr#uV3\
import java.io.*; $Sd pF-'
import java.net.*; ,y[8Vz?:
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public class SiteFileFetch extends Thread { HD>UTX`&mc
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SiteInfoBean siteInfoBean = null; //文件信息Bean X>U _v
long[] nStartPos; //开始位置 Er<!8;{?
long[] nEndPos; //结束位置 oVIc^yk5a
FileSplitterFetch[] fileSplitterFetch; //子线程对象 [s~6,wz
long nFileLength; //文件长度 x+,:k=JMT
boolean bFirst = true; //是否第一次取文件 TECp!`)j"
boolean bStop = false; //停止标志 |eP5iy wg
File tmpFile; //文件下载的临时信息 FR6PY
DataOutputStream output; //输出到文件的输出流 'oF ('uR
*)s^+F 0
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) :O]US)VSj
public SiteFileFetch(SiteInfoBean bean) throws IOException aJ
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{ q)OCY}QA
siteInfoBean = bean; }[SYWJIc
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); yhd]s0(!
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); W@Rb"5Gy+
if(tmpFile.exists ()) >lF@M-
{ ricL.[v9S
bFirst = false; !twYjOryH[
read_nPos(); N;i\.oY
} |P7FPmn
else tiF-lq
{ %;b] k
nStartPos = new long[bean.getNSplitter()]; ?{wD%58^oG
nEndPos = new long[bean.getNSplitter()]; ?vmoRX
} ;1q|SmF
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} -{NP3zy
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public void run() =kBN&v_(!
{ W:O p\
//获得文件长度 Oe lf^&m
//分割文件 <yw56{w,
//实例FileSplitterFetch +IG=|X
//启动FileSplitterFetch线程 %#E$wz
//等待子线程返回 gB]jLe
try{ [I}xR(a@n
if(bFirst) L#\5)mO.v
{ !HKW_m^3J
nFileLength = getFileSize(); 3|bbJ6*.<
if(nFileLength == -1) bRK\Tua
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{ Hd_,`W@
System.err.println("File Length is not known!"); 0e(4+:0
} t)4]2z)$
else if(nFileLength == -2) =A(Az
{ XzPUll;ZU
System.err.println("File is not access!"); {2U3
} Gyb|{G_
else b fI= =
{ >~ L0M
for(int i=0;i<nStartPos.length;i++) ?Zc(Zy6
{ g1~wg$`S8S
nStartPos = (long)(i*(nFileLength/nStartPos.length)); L+8O
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} nxe9^h7m
for(int i=0;i<nEndPos.length-1;i++)
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{ ym'!f|9AA
nEndPos = nStartPos[i+1]; Wjr^: d
} !1Nh`FN
nEndPos[nEndPos.length-1] = nFileLength; r(JP&
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} Cm9#FA
} 0U?(EJ
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//启动子线程
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ^7YZ>^
for(int i=0;i<nStartPos.length;i++) T9uOOI
{ D/+l$aBz
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), <TgVU.*
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), g1@rY0O
nStartPos,nEndPos,i); -#,4rN#
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); co-1r/
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fileSplitterFetch.start(); $Ww.^ym
} M,<UnAVP-
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), aI1tG
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); FmgMd)#
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ZtY?X- 4_
nEndPos = " + nFileLength); AOef1^S=
// fileSplitterFetch[nPos.length-1].start(); ~vcua@
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//等待子线程结束 15d'/f
//int count = 0; dtig_s,)D
//是否结束while循环 xXSfYW
boolean breakWhile = false; nX8ulGG s
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while(!bStop) PW\me7iCz
{ ,s/laZ)V
write_nPos(); v>_83P`
Utility.sleep(500); U^]@0vR
breakWhile = true; cUn>gT
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for(int i=0;i<nStartPos.length;i++) MeV*]*
{ B qLL]%F
if(!fileSplitterFetch.bDownOver) 03"FK"2S
{ dFmpx%+p
breakWhile = false; ay]l\d2!3
break; Y7;=\/SV
} jwSPLq%
} ,.0B0Y-X
if(breakWhile) T[MDjhv'
break; tToP7q^
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//count++; s"p\-Z
//if(count>4) z<gII~%
// siteStop(); TeFi[1
} \"w+4}
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System.err.println("文件下载结束!"); Q7\j:.
} T8d=@8g,%
catch(Exception e){e.printStackTrace ();} t#w,G
} }zqo<o
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//获得文件长度 <C451+95
public long getFileSize() PcjeuJZ
{ 9 9^7Ek!z#
int nFileLength = -1; 1L?d/j
try{ 3#y`6e=5
URL url = new URL(siteInfoBean.getSSiteURL()); [z!pm-Ir
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); `G%h=rr^c
httpConnection.setRequestProperty("User-Agent","NetFox"); %evtIU<h
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int responseCode=httpConnection.getResponseCode(); x,|fblQz
if(responseCode>=400) {
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{ C_yNSD
processErrorCode(responseCode); HE>V\+
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return -2; //-2 represent access is error |9X2AS Qu
} ,
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String sHeader; 6cD3(//
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for(int i=1;;i++) AGKT* l.-
{ F{c8{?:
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); M^Tm{`O!
//Utility.log(in.readLine()); ;aD?BD__Z
sHeader=httpConnection.getHeaderFieldKey(i); xxwbX6^d
if(sHeader!=null) FR>[g`1
{ Zr =B8wuT
if(sHeader.equals("Content-Length")) <[ u(il
{ W8r"dK
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); vP=H 2P
break; Z4E6J'B8
} (:\L@j
} e)m6xiZ
else pG'?>]Rt4
break; 2EYWX!Bx
} Y*{5'q+2
} c
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catch(IOException e){e.printStackTrace ();} btC6R>0
catch(Exception e){e.printStackTrace ();} +KWO`WR
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Utility.log(nFileLength); ^bfU>02Q6p
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return nFileLength; -yb7s2o
} Y88N*axDW.
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//保存下载信息(文件指针位置) s,AJR
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private void write_nPos() xxr'g =
{ IO]tO[P#
try{ f.bw A x
output = new DataOutputStream(new FileOutputStream(tmpFile)); ?$uEN_1O\@
output.writeInt(nStartPos.length); `Q#)N0
for(int i=0;i<nStartPos.length;i++) ~wOMT
{ E9Dy)f]#W
// output.writeLong(nPos); ecO$L<9>
output.writeLong(fileSplitterFetch.nStartPos); hwQ|'^(@O
output.writeLong(fileSplitterFetch.nEndPos); [_(uz,'
} ^f-)gZ&
output.close(); {u9n?Z%
} adRIg:2
catch(IOException e){e.printStackTrace ();} hl] y):
catch(Exception e){e.printStackTrace ();} ,-8Xb+!8I
} /q,=!&f2
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//读取保存的下载信息(文件指针位置) TTbJ9O<43
private void read_nPos() {P\Ob0)q
{ q/Ji}NGm
try{ bv7xh*/
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); )EQI>1_
int nCount = input.readInt(); wZ69W$,p
nStartPos = new long[nCount]; ]YfG`0eK<
nEndPos = new long[nCount]; J><hrZ
for(int i=0;i<nStartPos.length;i++) e'c3.sQ|?
{ o?~27
nStartPos = input.readLong(); m7RyFnR2
nEndPos = input.readLong(); \2#K {
} %cDDu$9;
input.close(); +2}Ar<elP
} -*hPEgcV9
catch(IOException e){e.printStackTrace ();} |9Yx`_DF
catch(Exception e){e.printStackTrace ();} .6y*Z+Zg
} lbw+!{Ch
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private void processErrorCode(int nErrorCode) bY*_6SPK4
{ |id7@3leu
System.err.println("Error Code : " + nErrorCode); 6#Y]^%?uy
} <<Y]P+uU
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//停止文件下载 w (X}
public void siteStop() *CAz_s<
{ .y_ ~mr&d
bStop = true; )"|wWu
for(int i=0;i<nStartPos.length;i++) CdcBE.%<
fileSplitterFetch.splitterStop(); p]?eIovi
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} <{hB&4oL
} 20}]b*C}
//负责部分文件的抓取 Zm|il9y4m
**FileSplitterFetch.java mo=@Zt
*/ <7B;_3/
package NetFox; /R?*i@rvf
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import java.io.*; 3-n&&<
import java.net.*; \$t{K
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public class FileSplitterFetch extends Thread { e8egxm
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String sURL; //File URL m7XN6zX
long nStartPos; //File Snippet Start Position %u<r_^w5
long nEndPos; //File Snippet End Position d(9Sk Xr
int nThreadID; //Thread's ID 'd;aAG
boolean bDownOver = false; //Downing is over )cZ KB0*+
boolean bStop = false; //Stop identical W?.xtQEv
FileAccessI fileAccessI = null; //File Access interface K:Z,4Y
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException <5CQ#^cK
{ e%{7CR'~TD
this.sURL = sURL; @T.F/Pjhc
this.nStartPos = nStart; 8JW0;H<
this.nEndPos = nEnd; J4iu8_eH!D
nThreadID = id; '-G,7!.,r%
fileAccessI = new FileAccessI(sName,nStartPos);//定位 \,:7=
} wLt0Fq6QG
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public void run() y^kC2DS
{ a{%EHL,F
while(nStartPos < nEndPos && !bStop) U~c9PqjZ
{ R iV]SgV9
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try{ /^&$ma\
URL url = new URL(sURL); /jq"r-S"
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); irjHPuhcG
httpConnection.setRequestProperty("User-Agent","NetFox"); y] Cx[
String sProperty = "bytes="+nStartPos+"-"; ]#q$i[Y
httpConnection.setRequestProperty("RANGE",sProperty); Aqg$q* Y
Utility.log(sProperty); ?9 `T_,
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InputStream input = httpConnection.getInputStream(); @e7_&EGR?
//logResponseHead(httpConnection); &qa16bz
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byte[] b = new byte[1024]; 6+PP(>em
int nRead; dPgA~~
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) y6s/S.
{ }:0HM8B7!
nStartPos += fileAccessI.write(b,0,nRead); =umF C[.W
//if(nThreadID == 1) lb"T'}q
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); S%7bM~J@
} [!ZYtp?Hf
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Utility.log("Thread " + nThreadID + " is over!"); {z'Gg
bDownOver = true; YsO`1D
//nPos = fileAccessI.write (b,0,nRead); Rob:W|
} aIWpgUd`
catch(Exception e){e.printStackTrace ();} (ijO|%?
} MUN:}S
} =3,Sjme
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//打印回应的头信息 y G>sBc
public void logResponseHead(HttpURLConnection con) $ WWi2cI;
{ n4ti{-^4|d
for(int i=1;;i++) sn@)L ~$V
{ g|!=@9[dv
String header=con.getHeaderFieldKey(i); icK U)
if(header!=null) ?C6`
//responseHeaders.put(header,httpConnection.getHeaderField(header)); \OK}DhY#
Utility.log(header+" : "+con.getHeaderField(header)); lw4#C`bx
else 6b!1j,\Vx
break; Ew9MWlk
} >v%UV:7ap
} ];0:aSi#
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public void splitterStop() i\MW'b
{ m :]F&s
bStop = true; er !+QD,EM
} 7G_lGV_
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} ]d&;QZ#w
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/* N=:xyv
**FileAccess.java u)ZZ/|
*//文件访问(定位,写) ['0^gN$:e
package NetFox; 9x9E+DG#(
import java.io.*; 8EI&}I
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public class FileAccessI implements Serializable{ R"PO@v
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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 q{)Q ?E
RandomAccessFile oSavedFile; %E2C4UbY
long nPos; .>(qZEF
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public FileAccessI() throws IOException ]JI
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{ jbTyM"Y
this("",0); cACnBgLl
} OL#RkD
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public FileAccessI(String sName,long nPos) throws IOException .O.fD
{ WJ]g7!Ks
oSavedFile = new RandomAccessFile(sName,"rw"); :#W>lq@H
this.nPos = nPos; vYG$>*
oSavedFile.seek(nPos); Aj=c,]2
} R~BW=Dz,e
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public synchronized int write(byte[] b,int nStart,int nLen) >Q^*h}IdW
{ \Ng[lN
int n = -1; PFeK;`[
try{ O,KlZf_B
oSavedFile.write(b,nStart,nLen); =TXc- J
n = nLen; E}=F
} ~3m}
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catch(IOException e) 'MIM_m)H
{ ,Onu%
e.printStackTrace (); F?TmOa0
} `#N7ym;s@
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= G3A}
return n; y|Zj
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} BRMR>
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} &]/.=J
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/* %|3UWN
**SiteInfoBean.java Ehf{Kl
*/ V?cUQghHg
package NetFox; =p';y&
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public class SiteInfoBean { FKB)o7
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private String sSiteURL; //Site's URL b; 4;WtBO
private String sFilePath; //Saved File's Path _qqJ>E<0
private String sFileName; //Saved File's Name \7,'o] >M-
private int nSplitter; //Count of Splited Downloading File ;rH@>VrR
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public SiteInfoBean() PK*
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{//nSplitter的缺省值为5 b%,`;hy{
//default value of nSplitter is 5 -f:uNF]Ls
this("","","",5); l=JK+uZ
} Djf,#&j!3
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) yS-owtVCGF
{ `_v|O{DC{
sSiteURL= sURL; ^UK6q2[
sFilePath = sPath; x_5H_! \#
sFileName = sName; ];go?.*C
this.nSplitter = nSpiltter; XX(;,[(_
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} D*j\gI
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public String getSSiteURL() 6y9#am?
{ ;=6~,k)
return sSiteURL; vH#^ |u
} rB:W\5~7
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public void setSSiteURL(String value) YX_p3
{ R{hKl#j;>
sSiteURL = value; f+huhJS5e
} gI^*O@Q4{b
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public String getSFilePath() #SRGVa`x
{ ZOG6
return sFilePath; ]f q.r
} j{9sn,<:
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public void setSFilePath(String value) Ro?aDrQ
{ S:Ne g!`
sFilePath = value; FXOA1VEg
} ``}EbOMG
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public String getSFileName() >LwZ"IEV
{ m$:o+IH/
return sFileName; A@EeX4N
} Jx@3zl
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public void setSFileName(String value) 969*mcq'
{ kQ~*iY
sFileName = value; IXugnvyV
} ;z>)&F
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public int getNSplitter() Dm[4`p@IY\
{ #!KbqRt
return nSplitter; ayuj)]b
} s3W )hU)
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public void setNSplitter(int nCount) aO?(ZL
{ x5k6yHn
nSplitter = nCount; Ex~[Hk4ow
} TDdFuO'}
} E/9 U0
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/* b,8W
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**Utility.java AxUj CerNf
*/ ^S'}RZ*>
package NetFox; IDb|J%e^P
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public class Utility { TGGeTtk=
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