/* [Jj@A(Cz
**SiteFileFetch.java w'XN<RWA
*/ <L<^uFB
package NetFox; Lf%=vd
import java.io.*; i`W~-J
import java.net.*; i7cUp3
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public class SiteFileFetch extends Thread { ;$e)r3r`LV
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SiteInfoBean siteInfoBean = null; //文件信息Bean =qpGAv_#
long[] nStartPos; //开始位置 nkTdn
long[] nEndPos; //结束位置 pzaU'y#PM
FileSplitterFetch[] fileSplitterFetch; //子线程对象 sI h5cT
long nFileLength; //文件长度 (h@!_qi9:
boolean bFirst = true; //是否第一次取文件 vVIND
boolean bStop = false; //停止标志 0pG +yec
File tmpFile; //文件下载的临时信息 )=`DEbT
DataOutputStream output; //输出到文件的输出流
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) uPapINj
public SiteFileFetch(SiteInfoBean bean) throws IOException kjB'WzZ8
{ 3 S*KjY'@
siteInfoBean = bean; :I7mMy*
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); _0FMwC#DY
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); uB3VCO.;_
if(tmpFile.exists ()) G
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{ m#i4_F=^b
bFirst = false; iSR"$H{
read_nPos(); f6Lc"b3s1
} mEu2@3^E }
else oylQCbT
{ jT< I`K*
nStartPos = new long[bean.getNSplitter()]; z^jmf_
nEndPos = new long[bean.getNSplitter()]; IR$d?\O3
} x X[WX#'f
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public void run() `LLmdm 6i
{ kB=B?V~#
//获得文件长度 cWZ uph\
//分割文件 (aC=,5N
//实例FileSplitterFetch Otx>S' 5
//启动FileSplitterFetch线程 i$$h6P#
//等待子线程返回 9I2&Vx=DSt
try{ hkm}oYW+
if(bFirst) ^Y;,cLXJ
{ U`8Er48X
nFileLength = getFileSize(); /W-ges
if(nFileLength == -1) 0^nF: F
{ uDkX{<_Xe
System.err.println("File Length is not known!"); Ejr'Yzl3_
} ]0 = |?n$7
else if(nFileLength == -2) 9-q> W
{ reArXmU<u
System.err.println("File is not access!"); tU2#Z=a
} CLe{9-o
else WcS`T?Xa
{ ,!alNNY
for(int i=0;i<nStartPos.length;i++) MBw;+'93qf
{ Ii5U)"
nStartPos = (long)(i*(nFileLength/nStartPos.length)); =M4:nt
} \P9ms?((A
for(int i=0;i<nEndPos.length-1;i++) jP_s(PQ
{ Ayg^<)JWh
nEndPos = nStartPos[i+1]; lF.kAEC
} lw}7kp4
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nEndPos[nEndPos.length-1] = nFileLength; ^'M^0'_"v
} C96*,.j~'
} pjTJZhT2 I
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//启动子线程 _F`JFMS
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; R) dP=W*
for(int i=0;i<nStartPos.length;i++) Z|N$qm}
{ :aaX Y:<
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %xG<hNw/
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), x3`JC&hF,q
nStartPos,nEndPos,i); @R%qP>_
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); lVq5>:'}^;
fileSplitterFetch.start(); LL
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} `[#id@Z1
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), {~FPvmj&
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); "M-';;
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", NziCN*6
nEndPos = " + nFileLength); Ai[@2A yU
// fileSplitterFetch[nPos.length-1].start(); U_izKvEh
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//等待子线程结束 F<6(Hw#>
//int count = 0; {'h&[f>zcQ
//是否结束while循环 rb4; @&
boolean breakWhile = false; ;zo|. YD
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while(!bStop) $H)!h^7^9
{ &k_*Y-l7]
write_nPos(); [ei~Xkzkj
Utility.sleep(500); Keo<#Cc?
breakWhile = true; sU*?H`U3d
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for(int i=0;i<nStartPos.length;i++) C,eP!_O
{ FNF `Z
if(!fileSplitterFetch.bDownOver) D QxuV1
{ &ck}3\sQ
breakWhile = false; d|Wqx7t]P
break; =Hd#"9-
} sK+uwt
} _Y&.Nw
if(breakWhile) (2>q
break; F09%f"9
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//count++; cf"&22TQ+Z
//if(count>4) [Z:P{yr
// siteStop(); 3fQ`}OcNr
} 2/V%jS[4#y
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System.err.println("文件下载结束!"); ~!5Qb{^
} \SQ4yc
catch(Exception e){e.printStackTrace ();} 2[pOGc$
} ]*k ~jY,
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//获得文件长度 yBs-bp"-
public long getFileSize() obF|;fwPnR
{ {X?1}5ry
int nFileLength = -1; hLZfArq}
try{ KyVzf(^
URL url = new URL(siteInfoBean.getSSiteURL()); p\;8?x
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); WUz69o be
httpConnection.setRequestProperty("User-Agent","NetFox"); gvWgw7z
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int responseCode=httpConnection.getResponseCode(); Pi?G:IF
if(responseCode>=400) T|BlFJ0"
{ [DeDU:
processErrorCode(responseCode); *`w>\},su
return -2; //-2 represent access is error VUUnB<j
} %SIll
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String sHeader; $#5'c+0
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for(int i=1;;i++) hwe6@T.#
{ _MIheCvV
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); hV,T889'
//Utility.log(in.readLine()); FywX
sHeader=httpConnection.getHeaderFieldKey(i); v07A3oj
if(sHeader!=null) 4l*cX1!
{ p>?(uGV
if(sHeader.equals("Content-Length")) &P}t<;
{ 'Y
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); zJ}abo6rVw
break; mpk+]n@
} (fl$$$
} 1QmOUw}yj
else 19O
break; @,,G]4zZ!
} [6g$;SicT
} 1CZO+MB&"$
catch(IOException e){e.printStackTrace ();} ,!^c`_Q\>@
catch(Exception e){e.printStackTrace ();} j]%XY+e
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Utility.log(nFileLength); l{^s4
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return nFileLength; q!U$\Q&
} \5<Z [#{
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//保存下载信息(文件指针位置) $i<+O,@-
private void write_nPos() {0,6-dd5
{ "v0bdaQH3
try{ H2[0@|<<
output = new DataOutputStream(new FileOutputStream(tmpFile)); 5/U{b5
output.writeInt(nStartPos.length); St!0MdCH
for(int i=0;i<nStartPos.length;i++) ?ZC!E0]
{ q4!\^HwQ
// output.writeLong(nPos); [+A]E,pv]1
output.writeLong(fileSplitterFetch.nStartPos); $E; Tj|W
output.writeLong(fileSplitterFetch.nEndPos); r~QE}00@^
} nLk`W"irM
output.close(); jp4-w(
} rzie_)a Y%
catch(IOException e){e.printStackTrace ();} Hq>hnCT
catch(Exception e){e.printStackTrace ();} (#85<|z
} TT3GGHR
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//读取保存的下载信息(文件指针位置) ;C1#[U1Uy
private void read_nPos() lqrI*@>Tz
{ 2PeMt^
try{ SQ+r'g
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); =tA;JB
int nCount = input.readInt(); 6~{'\Z
nStartPos = new long[nCount]; :6(@P1vA 6
nEndPos = new long[nCount]; `) ],FE*:
for(int i=0;i<nStartPos.length;i++) (s|WmSQ
{ w3b?i89
nStartPos = input.readLong(); &ZFHWI(P
nEndPos = input.readLong(); O+<+yQl
} pih 0ME}z
input.close(); c}),yQ|!:
} ?+Vi
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catch(IOException e){e.printStackTrace ();} >hG*=4oh
catch(Exception e){e.printStackTrace ();} mv,a>Cvs[
} [%6)
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private void processErrorCode(int nErrorCode) /f oI.S
{ e~'z;%O~
System.err.println("Error Code : " + nErrorCode); hG<[F@d
} rhaq!s38:
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//停止文件下载 69:-c@L0
public void siteStop() !z2xm3s{]p
{ ([rSYKpi
bStop = true; EvY^]M_U
for(int i=0;i<nStartPos.length;i++) %FqQ+0^
fileSplitterFetch.splitterStop(); Vom,^`}
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} C+`V?rp=s
} /$\8?<Pc".
//负责部分文件的抓取 {0/2Hw n
**FileSplitterFetch.java c\ZnGI\|
*/ }1Mf0S
package NetFox; / <+`4n
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import java.io.*; (ToD
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import java.net.*; {=gJGP/}_
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public class FileSplitterFetch extends Thread { BjTgZ98J
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String sURL; //File URL X+,0;% p
long nStartPos; //File Snippet Start Position jpW_q+^?
long nEndPos; //File Snippet End Position JqYa~6 C
int nThreadID; //Thread's ID Nx*1m
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boolean bDownOver = false; //Downing is over 7D'D7=Z.
boolean bStop = false; //Stop identical S^EAE]
FileAccessI fileAccessI = null; //File Access interface WMWMb3
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException nr}Ols
{ N@!PhP
this.sURL = sURL; P-8QXDdr
this.nStartPos = nStart; Vwjic2lGI
this.nEndPos = nEnd; gnxD'1_
nThreadID = id; oj'YDQ^uj
fileAccessI = new FileAccessI(sName,nStartPos);//定位 WT1y7+_g(d
} C"s-ttP
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public void run() B/n~ $
{ CW/L(RQ
while(nStartPos < nEndPos && !bStop) 15aPoxo>
{ !g=b=YK
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try{ q0vZR"y
URL url = new URL(sURL); tw\1&*:
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); g:G5'pZf
httpConnection.setRequestProperty("User-Agent","NetFox"); &_hEM~{
String sProperty = "bytes="+nStartPos+"-"; _RZ"WA^[
httpConnection.setRequestProperty("RANGE",sProperty); "sY}@Q7
Utility.log(sProperty); IX<9_q
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InputStream input = httpConnection.getInputStream(); e#3RT8u#
//logResponseHead(httpConnection); 6uUn
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byte[] b = new byte[1024]; FS!)KxC/-
int nRead; b^ [ z'
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 3=} P l,
{ v*<rNZI
nStartPos += fileAccessI.write(b,0,nRead); FCKyKn
//if(nThreadID == 1) 2Yd@V}
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); VhAJ1[k4!
} K~S*<?
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Utility.log("Thread " + nThreadID + " is over!"); (pd~ 2!;C
bDownOver = true;
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//nPos = fileAccessI.write (b,0,nRead); T.-tV[2
} 0)
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catch(Exception e){e.printStackTrace ();} *">CEQ[MT
} Hr!$mf)h
} Wv;,@xTZ
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//打印回应的头信息 ]+B.=mO_
public void logResponseHead(HttpURLConnection con) t imY0fx#
{ &rPAW V'v
for(int i=1;;i++) .c0u##/0
{ ,&o^}TFkg
String header=con.getHeaderFieldKey(i); :eJJL,v
if(header!=null) ,tg(aL
//responseHeaders.put(header,httpConnection.getHeaderField(header)); <hTHY E=
Utility.log(header+" : "+con.getHeaderField(header)); @EyB^T/
else tm2lxt
break; S $o1Q
} `YE=B{q
} :M f8q!Q'
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public void splitterStop() 5;^1Ab0
{ V3r)u\ o'
bStop = true; ED" fi$
} Q.h.d))
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} ',t*:GBZCf
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/* gH\>",[
**FileAccess.java tY!l}:E[
*//文件访问(定位,写) #=33TvprR2
package NetFox; o|c6=77043
import java.io.*; /~f[>#
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public class FileAccessI implements Serializable{ {#4a}:3
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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 Iz. h
RandomAccessFile oSavedFile; q9j~|GE|
long nPos; xU0iz{9
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public FileAccessI() throws IOException l5&5VC)
{ C/qKa[mg
this("",0); ytjZ7J['{
} / Wjc\n$'
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public FileAccessI(String sName,long nPos) throws IOException izaqEz
{ I
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oSavedFile = new RandomAccessFile(sName,"rw"); Us'JMZ~
this.nPos = nPos; ,pdzi9@=t
oSavedFile.seek(nPos); Zy;jp*Q
} N0kCdJv
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public synchronized int write(byte[] b,int nStart,int nLen) ht ]n*
{ $hcv}<$/
int n = -1; 7z1@XO<D
try{ DT>`.y%2W
oSavedFile.write(b,nStart,nLen); ,\P|%yv
n = nLen; stUv!
} 0|tyKP|J
catch(IOException e) YtSYe%
{ WKlqm)m@
e.printStackTrace (); S|k@D2k=
} <ml?DXT
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return n; &ZC{ _t
} ov,
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} mIYKzu_k=
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/* JcmMbd&B
**SiteInfoBean.java !J#P'x0
*/ x/M$_E<G
package NetFox; D3dh,&KO\
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public class SiteInfoBean { l{C]0^6>i
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private String sSiteURL; //Site's URL kjV>\e
private String sFilePath; //Saved File's Path r^C(|Vx
private String sFileName; //Saved File's Name uIO,9> ee
private int nSplitter; //Count of Splited Downloading File lrKT?siB
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public SiteInfoBean() iz/CC V L
{//nSplitter的缺省值为5 ?r&~(<^z
//default value of nSplitter is 5 ,JK0N_=
this("","","",5); FO_}9 <s
} pn(i18x
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) gE@Pb
{ N5 ; z5E
sSiteURL= sURL; L{>rN`{
sFilePath = sPath; H9TeMY
sFileName = sName; j1{`}\e
this.nSplitter = nSpiltter; YiuV\al
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} 5TuwXz1v
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public String getSSiteURL() vD9.X}l]
{ Y_y!$jd(N
return sSiteURL; UIf#Gy|l
} _7:Bxx4B
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public void setSSiteURL(String value) ]=-=D9ZS3
{ 6%6dzZ
sSiteURL = value; 1:T"jsWw
} |*zgX]-+;
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