/* {cm?Q\DT
**SiteFileFetch.java *): |WDR
*/ ~=|}!A(
package NetFox; $Z@*!B^
import java.io.*; Z+El(f x
import java.net.*; UX)GA[WI
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public class SiteFileFetch extends Thread { P8d
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SiteInfoBean siteInfoBean = null; //文件信息Bean uY&1[(Pb
long[] nStartPos; //开始位置 Y !<m8\
long[] nEndPos; //结束位置 ]@&X*~c^Z
FileSplitterFetch[] fileSplitterFetch; //子线程对象 p;+O/'/j
long nFileLength; //文件长度 J2=4%#R!
boolean bFirst = true; //是否第一次取文件 2Vx4"fHP#N
boolean bStop = false; //停止标志 4D?h}U /
File tmpFile; //文件下载的临时信息 {[H_Vl@
DataOutputStream output; //输出到文件的输出流 ]01`r/->\
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 3( BL
public SiteFileFetch(SiteInfoBean bean) throws IOException *7!MG
{ ;I>nA6A
siteInfoBean = bean; 46:<[0Psl/
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); /Y0~BQC7!
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); B.8B1MFm
if(tmpFile.exists ()) V\L;EHtc$
{ F!vrvlD`s
bFirst = false; t+?Bb7p,H
read_nPos(); b"I#\;Ym
} 7Nq<
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else FOiwA.:0
{ !nBbt?*
nStartPos = new long[bean.getNSplitter()]; W:r[o%B
nEndPos = new long[bean.getNSplitter()]; =g#PP@X]D!
} 4S_f2P2J
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} YkKu4f
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public void run() -nb U5o
{ 9)!Ksg(h
//获得文件长度 7P{= Pv+
//分割文件 S@,/$L
//实例FileSplitterFetch
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//启动FileSplitterFetch线程 C
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//等待子线程返回 K$S0h-?9]O
try{ .O-)m'5
if(bFirst) =D(a~8&,
{ #}~tTL
nFileLength = getFileSize(); ioi/`iQR
if(nFileLength == -1) SgU@`Pb
{ #/qcp|m
System.err.println("File Length is not known!"); RRO@r}A!y
} @fd<
else if(nFileLength == -2) neEqw+#Z
{ eu(Fhs
System.err.println("File is not access!"); IjhRSrCv
} 2f(`HSC'
else Zr}>>aIJ]k
{ A+/Lt>+AS
for(int i=0;i<nStartPos.length;i++) JQ+Mg&&Q
{ r`"_D%kc
nStartPos = (long)(i*(nFileLength/nStartPos.length)); oIrc))j,$
} HVM%B{(
for(int i=0;i<nEndPos.length-1;i++) M>k&WtqK
{ }cz58%
nEndPos = nStartPos[i+1]; 'bfxQ76@sa
} Md6u4c
nEndPos[nEndPos.length-1] = nFileLength; wG O-Z']i
} .r/s.g
} }Z <I%GT
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//启动子线程 i%yKyfD
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; za6 hyd^
for(int i=0;i<nStartPos.length;i++) $I5|rB/4?
{ |mhKD#:
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), $;g*s?F*
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), >(:3H+
nStartPos,nEndPos,i); ?3DL .U{
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); fTmJDUv+
fileSplitterFetch.start(); H8HH) ^
} :{w3l O
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), <,Gjo]z
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 1drg5
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", d Np%=gIj
nEndPos = " + nFileLength); z{.&sr>+v
// fileSplitterFetch[nPos.length-1].start(); #cR5k@
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//等待子线程结束 V xN!Ki=
//int count = 0; m<Gd 6V5
//是否结束while循环 qPu?rU{2
boolean breakWhile = false; El}~3|a?
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while(!bStop) BDN}`F[F
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write_nPos(); w_@6!zm
Utility.sleep(500); NrcV%-+u%
breakWhile = true; ^g'uR@uU
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for(int i=0;i<nStartPos.length;i++) &w_8E+YZ
{ TbqtT_{
if(!fileSplitterFetch.bDownOver) Kd}%%L
{ @$b7
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breakWhile = false; vSQB~Vw8t
break; .ErR-p=-
} ~LH).\V
} 3&X5*-U
if(breakWhile) ubl
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break; ?:PF;\U
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//count++; nQw, /Lk
//if(count>4) f]+.
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// siteStop(); 2 $Z4 >!
} ]VVx2ERs
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System.err.println("文件下载结束!"); \a:-xwUu<
} ]xJ2;{JWsO
catch(Exception e){e.printStackTrace ();} $nthMx$
} N8wA">u
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//获得文件长度 S?H
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public long getFileSize() ?cr^.LV|h^
{ (
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int nFileLength = -1; ds+0y;vc
try{ k1^&;}/f:
URL url = new URL(siteInfoBean.getSSiteURL()); uY)|
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 7baQ4QY?n
httpConnection.setRequestProperty("User-Agent","NetFox"); M-f; ,>
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int responseCode=httpConnection.getResponseCode(); /vPcg
if(responseCode>=400) {Pi]i?
{ sU?%"q
processErrorCode(responseCode); "IdN *K
return -2; //-2 represent access is error P_c9v/
} dBp)6ok#c
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String sHeader; jTz~
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for(int i=1;;i++)
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ^{fA:N=
//Utility.log(in.readLine());
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sHeader=httpConnection.getHeaderFieldKey(i); )KD*G;<O]L
if(sHeader!=null) 1lQO`CmR6M
{ B"I^hrQ
if(sHeader.equals("Content-Length")) ?,x3*'-(
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 0)-yLfTn
break; Wi{ jC?2Q
} %FO#j 6
} sM'%apM#
else N(^
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break; G$$y\e$
} 1$ C\`
} 6w:M_tDM
catch(IOException e){e.printStackTrace ();} BO)Q$*G~JD
catch(Exception e){e.printStackTrace ();} r5g:#mF"
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Utility.log(nFileLength); [oh0 )wzB
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return nFileLength; `8D}\w<eI
} ?B~S4:9
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//保存下载信息(文件指针位置) hMvLx>q3)
private void write_nPos() "nEfk{ g
{ ~*Kk+w9H<
try{ B)}.%G*
output = new DataOutputStream(new FileOutputStream(tmpFile)); Dq G m
output.writeInt(nStartPos.length); m]#oZVngy
for(int i=0;i<nStartPos.length;i++) UiLiy?EJ
{ RO+N>Wkt
// output.writeLong(nPos); !O}^ Y
output.writeLong(fileSplitterFetch.nStartPos); HSsG0&'-Y
output.writeLong(fileSplitterFetch.nEndPos); FH}2wO~ _
} sV`!4
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output.close(); ~SN *
} AeN$AqQd/
catch(IOException e){e.printStackTrace ();} )eaEc9o>
catch(Exception e){e.printStackTrace ();} R
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} lqoJ2JMy
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//读取保存的下载信息(文件指针位置) _8I\!
private void read_nPos() n3Q Rn^
{ nqMXE82
try{ nkAS]sC
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); "|KhqV=?v
int nCount = input.readInt(); GLE/ 1
nStartPos = new long[nCount]; (764-iv(
nEndPos = new long[nCount]; AkE(I16Uy~
for(int i=0;i<nStartPos.length;i++) &;wNJ)Uc
{ GI _.[
nStartPos = input.readLong(); y8arFG
nEndPos = input.readLong(); Z]\VOA>
} 3JJEj1O
input.close(); [;RO=
} O; #qG/b1
catch(IOException e){e.printStackTrace ();} )~[rb<:)b
catch(Exception e){e.printStackTrace ();} x^]J^L45
} s i=m5$V
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private void processErrorCode(int nErrorCode) f~?4
{ O
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System.err.println("Error Code : " + nErrorCode); = Y`e?\#`
} I92orr1
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//停止文件下载 (R|Ftjs .
public void siteStop() H05xt$J
{ M>_
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bStop = true; 8qF OO3c\V
for(int i=0;i<nStartPos.length;i++) 'M!* Ge
fileSplitterFetch.splitterStop(); 3EO:Uk5<
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} TKs l.|
} ~;/}D0k$x
//负责部分文件的抓取 *pj^d><
**FileSplitterFetch.java -ztgirU
*/ ,LftQ1*;
package NetFox; h6~H5X
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import java.io.*; +Jw+rjnP
import java.net.*; U#>K(
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public class FileSplitterFetch extends Thread { GMOnp$@H^s
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String sURL; //File URL `RHhc{
long nStartPos; //File Snippet Start Position A3eus
long nEndPos; //File Snippet End Position `/RcE.5n\@
int nThreadID; //Thread's ID pKNrEq
boolean bDownOver = false; //Downing is over CKy/gTN
boolean bStop = false; //Stop identical BRTCo,i
FileAccessI fileAccessI = null; //File Access interface
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException OKV/=]GS
{ ^t}8E2mq
this.sURL = sURL; gn)>(MG
this.nStartPos = nStart; V)jF]u~g
this.nEndPos = nEnd; 9^g?/8
nThreadID = id; nh*hw[Ord
fileAccessI = new FileAccessI(sName,nStartPos);//定位 +<rWYF(ii/
} 0x,NMS
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public void run() \'.|7{Xu
{ ?5j}&Y3
while(nStartPos < nEndPos && !bStop) k] iyx
{ LXS)(-&
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try{ ^8V8,C)
URL url = new URL(sURL); +j(7.6ia
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); )R6-]TkA_
httpConnection.setRequestProperty("User-Agent","NetFox"); UH`cWV Lpr
String sProperty = "bytes="+nStartPos+"-"; sUz,F8G
httpConnection.setRequestProperty("RANGE",sProperty); 'cPE7uNT
Utility.log(sProperty); "U|u-ka8B
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InputStream input = httpConnection.getInputStream(); bBY7^k
//logResponseHead(httpConnection); ]o($No
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byte[] b = new byte[1024]; &f-x+y
int nRead; 1T0s
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while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) a[ yyEgm2
{ e/R$Sfj]
nStartPos += fileAccessI.write(b,0,nRead); 1eOQ;#OV
//if(nThreadID == 1)
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// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); irF+(&q]jh
} Dd'J"|jF38
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Utility.log("Thread " + nThreadID + " is over!"); hxkwT
bDownOver = true; _18Aek
//nPos = fileAccessI.write (b,0,nRead); @*=eqO
} l,ic-Y1
catch(Exception e){e.printStackTrace ();} h3j`X'
} O
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} B3W2?5p
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//打印回应的头信息 }BAe
public void logResponseHead(HttpURLConnection con) ONMR2J(
{ />O.U?
for(int i=1;;i++) +pxtar
{ Nt~G
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String header=con.getHeaderFieldKey(i); XGAR8=tic
if(header!=null) Ygc.0VKMR
//responseHeaders.put(header,httpConnection.getHeaderField(header)); / !aVv
Utility.log(header+" : "+con.getHeaderField(header)); ,'byJlw_pv
else +\RviF[+
break; /! M%9gu
} yAQ)/u[|
} T1c&3
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public void splitterStop() TRFza}4:i
{ xG|lmYt76
bStop = true; %";ap8J04F
} RY]jY | E
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} :8Ugz ~i
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/* !-tVt
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**FileAccess.java QURpg/<U
*//文件访问(定位,写) <AB({(
package NetFox; "LM[WcDX
import java.io.*; \N.Bx
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public class FileAccessI implements Serializable{ J'*`K>wV
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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 _FzAf5DO
RandomAccessFile oSavedFile; Z8o8>C\d9/
long nPos; G],W{<Pe
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public FileAccessI() throws IOException JxQGL{)
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{ ^@;P -0Sy
this("",0); du&9mOrr
} AX6l=jFZx
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public FileAccessI(String sName,long nPos) throws IOException $`_xP1bUT
{ ?,
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oSavedFile = new RandomAccessFile(sName,"rw"); P.kf|,8L
this.nPos = nPos; Z+
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oSavedFile.seek(nPos); YT<(2u#Ng
} f&?
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public synchronized int write(byte[] b,int nStart,int nLen) -!X\xA/KN
{ x%55:8{
int n = -1; =6[R,{|C
try{ +uMK_ds~
oSavedFile.write(b,nStart,nLen); }PzHtA,V
n = nLen; _q`f5*Z[
} hc]5f3Z
catch(IOException e) F*=}}H/
{ c6LPqPcN
e.printStackTrace (); :YNXS;>)!
} P*kC>lvSv
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return n; 8:jakOeT
} W+#Zmvo
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} W"1=K]B
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/* 2UEjn>2
**SiteInfoBean.java 9~}.f1z
*/ idNg&'
package NetFox; 6Wc.iomx8
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public class SiteInfoBean { N683!wNX
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private String sSiteURL; //Site's URL I=&Kn@^
private String sFilePath; //Saved File's Path ?9;r|G
private String sFileName; //Saved File's Name a<&GsDw
private int nSplitter; //Count of Splited Downloading File &U
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public SiteInfoBean() HI{IC!6
{//nSplitter的缺省值为5 '<&rMn
//default value of nSplitter is 5 %#@5(_'
this("","","",5); zN,2
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} z460a[Wl
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) <CGJ:% AY
{ yn.f?[G2
sSiteURL= sURL; n^%",*8gD*
sFilePath = sPath; JI|MR#_u
sFileName = sName; !Bn,f2
this.nSplitter = nSpiltter; br4 %(w(d
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} P6u%-#
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public String getSSiteURL() ;BYv&(#u1q
{ &