/* Gpcordt/
**SiteFileFetch.java (w\|yPBB
*/ o|c&$)m
package NetFox; _qpIdQBo
import java.io.*; O1\25D
import java.net.*; !0UfX{.
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public class SiteFileFetch extends Thread { >Q ^ mR
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SiteInfoBean siteInfoBean = null; //文件信息Bean cxvO,8NiB
long[] nStartPos; //开始位置 9C{Xpu
long[] nEndPos; //结束位置 c&aqN\'4"
FileSplitterFetch[] fileSplitterFetch; //子线程对象 +ZGH
long nFileLength; //文件长度 oHp"\Z&
boolean bFirst = true; //是否第一次取文件 |nr;OM
boolean bStop = false; //停止标志 HZS.%+2
File tmpFile; //文件下载的临时信息 *CAz_s<
DataOutputStream output; //输出到文件的输出流 T+rym8.p
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) oL }d=x/
public SiteFileFetch(SiteInfoBean bean) throws IOException SB5qm?pT8<
{ 20}]b*C}
siteInfoBean = bean; .x/H2r'1
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ,?Vxcr
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); X7:Dw]t
if(tmpFile.exists ()) Z0D&ayzkh^
{ ]W%rhppC
bFirst = false; '%:E4oI
read_nPos(); CDW|cr{
} wdV)M?
else JHVndK4L
{ Wf%)::G*uR
nStartPos = new long[bean.getNSplitter()]; ^L
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nEndPos = new long[bean.getNSplitter()]; rq1~%S
} mz;ExV16
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} kI5LG6
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public void run() T2mZkK?rA
{ '=Jz}F <
//获得文件长度 Bxj4rC[
//分割文件 vt5>>rl
//实例FileSplitterFetch d)XT> &
//启动FileSplitterFetch线程 /jq"r-S"
//等待子线程返回 ~EYdE qS)
try{ FgPmQ
if(bFirst) ?9 `T_,
{ `$3P@SO"
nFileLength = getFileSize(); F0r5$Pl*
if(nFileLength == -1) cRf;7G
{ 40-/t*2Ly
System.err.println("File Length is not known!"); X\<a|/{V A
} [r'hX#
else if(nFileLength == -2) #}Ays#wA>?
{ =Q|s[F
System.err.println("File is not access!"); <!|=_W6
} td#m>S
else {z'Gg
{ U[#q"'P|l
for(int i=0;i<nStartPos.length;i++) :X*uE^bH
{ qrt2uE{K
nStartPos = (long)(i*(nFileLength/nStartPos.length)); SBw'z(U
} jar?"o
for(int i=0;i<nEndPos.length-1;i++) R/^;,.
{ 0nlh0u8#
nEndPos = nStartPos[i+1]; H@k$sZ.
} #e9XU:9@g
nEndPos[nEndPos.length-1] = nFileLength; 1fF\k#BE-%
} 6b!1j,\Vx
} HI)U6.'
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//启动子线程 z]O>`50Q
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; b|`
for(int i=0;i<nStartPos.length;i++) fK=vLcH
{ \l 3M\$oS>
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ZPY84)A_}
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 27H4en; o=
nStartPos,nEndPos,i); #mO.[IuD
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); m(WVxVB
fileSplitterFetch.start(); Z,b^f
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} %,) Xi
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), uRw%`J4H
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); $I/RN
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", @gJPMgF$F
nEndPos = " + nFileLength); 'wTJX>
// fileSplitterFetch[nPos.length-1].start(); lHPhZ(Z
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//等待子线程结束 u\UI6/
//int count = 0; 5d82M s
//是否结束while循环 jY\YSQ
boolean breakWhile = false; u+8?'ZT,
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while(!bStop) TC'^O0aZ_
{ \V.U8asfI
write_nPos(); dtq]_HvTJ
Utility.sleep(500); K+c>Cj}H
breakWhile = true; h$fC/Juit
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for(int i=0;i<nStartPos.length;i++) HLM"dmI
{ {{_,YO^w
if(!fileSplitterFetch.bDownOver) :~9F/Jx
{ 90)rOD1B
breakWhile = false; %AuS8'Uf
break; iD9hqiX&
} \t@|-`
} ~#
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if(breakWhile) KHXnB
break; sFxciCpN
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//count++; :YZMRJL
//if(count>4) v|mZcAz
// siteStop(); x;R9Gc[5
} 1{S"
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System.err.println("文件下载结束!"); I*K~GXWs#
} >j$CM:w
catch(Exception e){e.printStackTrace ();} BK]q^.7+:
} sxLq'3(
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//获得文件长度 QRv2%^L
public long getFileSize() Oj0/[(D-
{ W7"ks(
int nFileLength = -1; vQ}llA
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try{ A3N<;OOk
URL url = new URL(siteInfoBean.getSSiteURL()); YvK8;<k@-?
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); aNCIh@m~
httpConnection.setRequestProperty("User-Agent","NetFox"); Dl%NVi+n
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int responseCode=httpConnection.getResponseCode(); #\$R^u]!
if(responseCode>=400) m>6,{g)
{ HLU'1As65
processErrorCode(responseCode); 3B|o
return -2; //-2 represent access is error mPxph>o
} K/jC>4/c/
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String sHeader; Khxl'qj
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for(int i=1;;i++) 0>m-J
{ snV,rZ
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); A|8(3PiP
//Utility.log(in.readLine()); R1FBH:Iu
sHeader=httpConnection.getHeaderFieldKey(i); Llk4 =p
if(sHeader!=null) %@5f+5{i!z
{ IXugnvyV
if(sHeader.equals("Content-Length")) &/4W1=>(
{ ?*a:f"vQ
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); =LS?:Mhm
break; l=ZhHON
} fNc3&=]]
} 2hl'mRW
else v*1UNXU\
break; qde.;Yv9
} Qj?FUxw
} Dg4?,{c9W
catch(IOException e){e.printStackTrace ();} g&H6~ +\
catch(Exception e){e.printStackTrace ();} h\b]>q@
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Utility.log(nFileLength); =)(o(bfSKr
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return nFileLength; v"Fa_+TVx
} =m=`| Bn
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//保存下载信息(文件指针位置) o-B9r+N
private void write_nPos()
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{ ! q!
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try{ n3-u.Fb
output = new DataOutputStream(new FileOutputStream(tmpFile)); `(<XdlOj
output.writeInt(nStartPos.length); |0ahvsrtW
for(int i=0;i<nStartPos.length;i++) !MNUp(:
{ |r!G(an1x4
// output.writeLong(nPos); ? r=cLC
output.writeLong(fileSplitterFetch.nStartPos); nk]jIRy^T
output.writeLong(fileSplitterFetch.nEndPos); NA>h$N
} _) 2fXG!
output.close(); h*{{_3,
} ,2/qQD n/
catch(IOException e){e.printStackTrace ();} s(J,TS#I]
catch(Exception e){e.printStackTrace ();} +Cl(:kfYB
} qdrk.~_
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//读取保存的下载信息(文件指针位置) (Kd;l&8
private void read_nPos() i2/:'
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{ xWD=",0+
try{ :f?\ mVS+
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 0F6^[osqtl
int nCount = input.readInt(); 33DP0OBL^
nStartPos = new long[nCount]; ~mx me6"v
nEndPos = new long[nCount]; I4ZL+a
for(int i=0;i<nStartPos.length;i++) 4:=']C
{ <ZxxlJS)6
nStartPos = input.readLong(); ;(fD R8
nEndPos = input.readLong(); g8
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} }:7'C. ."
input.close(); LX'.up11X5
} aG}ju;
catch(IOException e){e.printStackTrace ();} t&^9o$
catch(Exception e){e.printStackTrace ();} bv$_t)Xh
} Lnbbv
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private void processErrorCode(int nErrorCode) :t-a;Q;
{ ;BUJ5
System.err.println("Error Code : " + nErrorCode); j|TcmZGO
} XYhN;U}Z
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//停止文件下载 G
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public void siteStop() ^EWkJW,Yc
{ NypM+y
bStop = true; 2%i_SX[
for(int i=0;i<nStartPos.length;i++) O-y/K2MC*
fileSplitterFetch.splitterStop(); lxx)l(&
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} DW&%"$2
} c""*Ng*T
//负责部分文件的抓取 2K4Jkyi
**FileSplitterFetch.java Xptb4]
*/ a|rN %hA4
package NetFox; YyEW}2
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import java.io.*; $mOVo'2
import java.net.*; nXPl\|pXt
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public class FileSplitterFetch extends Thread { JoeU J3N
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String sURL; //File URL Xmr|k:z
long nStartPos; //File Snippet Start Position (?R;u>
long nEndPos; //File Snippet End Position Y|JC+Ee
int nThreadID; //Thread's ID DT *'r;
boolean bDownOver = false; //Downing is over z-};.!L^
boolean bStop = false; //Stop identical 1{D_30sG.
FileAccessI fileAccessI = null; //File Access interface +TzZ
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 0qP&hybL[(
{ eS)2#=
this.sURL = sURL; 7OuzQzhcK
this.nStartPos = nStart; >Y,3EI\
this.nEndPos = nEnd; ?4>uGaU\
nThreadID = id; -+MGs]),
fileAccessI = new FileAccessI(sName,nStartPos);//定位 K5l#dl_T
} >d#oJ?goX
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public void run() j7r! N^
{ 0zH^yx:ma
while(nStartPos < nEndPos && !bStop) ">pW:apl%
{ 4cZig\mE;
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try{ ]MI>"hn
URL url = new URL(sURL); F:$Dz?F0v
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); (EZ34,k'S
httpConnection.setRequestProperty("User-Agent","NetFox"); 2hB';Dv
String sProperty = "bytes="+nStartPos+"-"; IX/FKSuq
httpConnection.setRequestProperty("RANGE",sProperty); p1}Y|m!
Utility.log(sProperty); e|Ip7`
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InputStream input = httpConnection.getInputStream(); f1eY2UtWQ
//logResponseHead(httpConnection); %cIF()
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byte[] b = new byte[1024]; 5<0d2bK$
int nRead; t<`h(RczHI
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 'Na \9b(
{ 3,`.$
nStartPos += fileAccessI.write(b,0,nRead); ]J=S\
//if(nThreadID == 1) T9
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// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); @(:ah
} |.bp
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Utility.log("Thread " + nThreadID + " is over!"); |=OO$z;q|
bDownOver = true; 9&'I?D&8
//nPos = fileAccessI.write (b,0,nRead); 6~ g:"}
} jgiP2k[Xom
catch(Exception e){e.printStackTrace ();} Bx(+uNQ
} kvU0$1
} )G(6=l*
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//打印回应的头信息 K#"@nVWJ.m
public void logResponseHead(HttpURLConnection con) Z_%}pe39B
{ vPG!S{4
for(int i=1;;i++) {$iJYS\
{ v}6YbY Tq
String header=con.getHeaderFieldKey(i); uo1G
if(header!=null) 9Ao0$|@b
//responseHeaders.put(header,httpConnection.getHeaderField(header)); y)3(
Utility.log(header+" : "+con.getHeaderField(header)); h.)2,
else ,5\:\e0H
break; ,2>:h"^
} ~qNpPIrGr
} O$
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public void splitterStop() K{VF_S:
{ !2x"'o
bStop = true; h3;Ij '
} ADX}
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} F~d
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/* @{_PO{=\C
**FileAccess.java /2u;w!oi.
*//文件访问(定位,写) #f|-l$a)3a
package NetFox; Rn{q/h
import java.io.*; ZP)=2'RY
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public class FileAccessI implements Serializable{ \Y9=dE}
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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 NQfIY`lt'
RandomAccessFile oSavedFile; ?l,i(I
long nPos; $!I$*R&
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public FileAccessI() throws IOException 1,PFz
{ tBBN62^X
this("",0); NtTLvO6
} Op3 IL/
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public FileAccessI(String sName,long nPos) throws IOException s*k"-5
{ mKpUEJ<a
oSavedFile = new RandomAccessFile(sName,"rw"); >\DXA)nc
this.nPos = nPos; n+GC L+Mo
oSavedFile.seek(nPos); GWE`'V
} `ss]\46>
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public synchronized int write(byte[] b,int nStart,int nLen) !hH6!G
{ [RpFC4W
int n = -1; z5'VsK:
try{ l"*>>/U k
oSavedFile.write(b,nStart,nLen); N_0&3PUSM
n = nLen; i0AC.]4e"
} 30H:x@='9
catch(IOException e) ;
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{ g"Ii'JZ?
e.printStackTrace (); }Xc|Z.6
} e9B,
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return n; xBw"RCBz^
} )i!)Tv
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} kT$4X0}
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/* O3BU.X1'%
**SiteInfoBean.java _SFD}w3b$
*/ pP/o2
package NetFox; S i>TG
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public class SiteInfoBean { 7I44BC*R~
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private String sSiteURL; //Site's URL r=[}7N
private String sFilePath; //Saved File's Path RCX4;,DHx
private String sFileName; //Saved File's Name 9E#(i P
private int nSplitter; //Count of Splited Downloading File G7=8*@q>:
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public SiteInfoBean() O71rLk;
{//nSplitter的缺省值为5 HZ}'W<N
//default value of nSplitter is 5 S8cFD):q
this("","","",5); P4AdfHk
} _k@l-Bj
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) .R"L$V$RU.
{ sI'HS+~pU
sSiteURL= sURL; gjWH
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sFilePath = sPath; >k#aB.6
sFileName = sName; ;$/G T
this.nSplitter = nSpiltter; u'b_zlW@
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} mNYz7N
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public String getSSiteURL() U,S286
{ ]rm=F]W/n
return sSiteURL; iau&k`b`
} D-!%L<<
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public void setSSiteURL(String value) sJlKN
{ `!8Z"xD
sSiteURL = value; 'W*F[U*&HP
} eH8.O
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public String getSFilePath() 4#9-Z6kOk
{ "LWuN>
return sFilePath; yw<xv-Q=i
} C=cTj7Ub
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public void setSFilePath(String value) 3\G=J
{ }"Cn kg
sFilePath = value; H/&Q,9sU21
} A'8K^,<