/* (q}LirR
**SiteFileFetch.java wPcEvGBN=
*/ 9GTp};Kg
package NetFox; ,zK E$
import java.io.*; ;3bUgI}.J
import java.net.*; 3QdCu<eBZ
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public class SiteFileFetch extends Thread { 2hryY
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SiteInfoBean siteInfoBean = null; //文件信息Bean AKk&
long[] nStartPos; //开始位置 HN5,MD[
long[] nEndPos; //结束位置 qFq$a9w|@
FileSplitterFetch[] fileSplitterFetch; //子线程对象 WoNY8
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long nFileLength; //文件长度 2vsV:LS.
boolean bFirst = true; //是否第一次取文件 /?z3*x
boolean bStop = false; //停止标志 9 v8^uPA
File tmpFile; //文件下载的临时信息 ,LmP >Q.
DataOutputStream output; //输出到文件的输出流 ~0?B
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) PqF&[M<)
public SiteFileFetch(SiteInfoBean bean) throws IOException
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{ tL<.B
siteInfoBean = bean; w
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//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ^7=7V0>,:
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); E2>+V{TF
if(tmpFile.exists ()) \.Op6ECV9
{ "{t]~urLd
bFirst = false; asCcBp
read_nPos(); /s=veiH
} ~ ^
else [/n@BK
{ A%^7D.j
nStartPos = new long[bean.getNSplitter()]; }owl7G3
nEndPos = new long[bean.getNSplitter()]; *BF[thB:a
} 'lu3BQvfh
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} r=54@`O!
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public void run() kBoQjOV`
{ %*Uc,V
//获得文件长度 @_#\qGY
//分割文件 -R\dg S3
//实例FileSplitterFetch )E^4U9v),
//启动FileSplitterFetch线程 E\;%,19Ob
//等待子线程返回 &%t&[Se_~
try{ dB0
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if(bFirst) 1v,R<1)&
{ y%kZ##
nFileLength = getFileSize(); u3pFH(
if(nFileLength == -1) %NC/zqPH~
{ M:iH7K
System.err.println("File Length is not known!"); e6jA4X+a
} !H9^j6|
else if(nFileLength == -2) WLfDXx2A
{ ae]6F_Qtc*
System.err.println("File is not access!"); UEfY'%x
} X|ZAC!J5>
else =_ b/g
{ K,%CE
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for(int i=0;i<nStartPos.length;i++) d2-oy5cEB
{ lmL$0{Yr
nStartPos = (long)(i*(nFileLength/nStartPos.length)); W}MN-0
} ?A*!rW:l;
for(int i=0;i<nEndPos.length-1;i++) G'(rjH>q
{ ',LC!^:~Nw
nEndPos = nStartPos[i+1]; ?#z<<FR
} [+xsX*+
nEndPos[nEndPos.length-1] = nFileLength; HiH<'m"\.
} PB8g4-?p6
} U/|JAg#
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//启动子线程 *)6\V}`
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ;^E_BJm
for(int i=0;i<nStartPos.length;i++) pIYXYQ=Z
{ s;*
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), -V[x
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), VfP\)Rl
nStartPos,nEndPos,i); &/"a
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); >TBXT+
fileSplitterFetch.start(); FOMJRq
} vZ.<OD4
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), < *;GJ{
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); jvL!pEC!
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 9n;6zVV%`
nEndPos = " + nFileLength); 5$cjCjY
// fileSplitterFetch[nPos.length-1].start(); (K84J*;
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//等待子线程结束 \x]\W#C
//int count = 0; PJe_qP
//是否结束while循环 L
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boolean breakWhile = false; 8UqH"^9.Q7
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while(!bStop) ,-8-Y>[
{ 5I^;v;F
write_nPos(); `M 'tuQ
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Utility.sleep(500); ~ A=Gra
breakWhile = true; @7C.0>W_A
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for(int i=0;i<nStartPos.length;i++) 1;V_E2?V
{ @DY"~ccH
if(!fileSplitterFetch.bDownOver) QKlsBq
{ f86Z #%
breakWhile = false; >][D"
break; 0< vJ*z|_
} !Hl] &
} l!&ik9m
if(breakWhile) 9!W$S[ABRB
break; xy"'8uRi
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//count++; WulyMcJ
//if(count>4) bE'{zU}o
// siteStop(); 0gaHYqkA>}
}
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System.err.println("文件下载结束!"); Sp:w _;{#
} Rb&9!z
catch(Exception e){e.printStackTrace ();} gBcs
} +qC[X~\
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//获得文件长度 Bdb}4X rL
public long getFileSize() iRlZWgj4^
{ ~"SQwE|
int nFileLength = -1; Y7r;}^+WY
try{ }l[e@6r F
URL url = new URL(siteInfoBean.getSSiteURL()); U$& '> %#
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); >Bf3X&uS
httpConnection.setRequestProperty("User-Agent","NetFox"); 2%`=
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int responseCode=httpConnection.getResponseCode(); dgoAaS2M
if(responseCode>=400) OoH-E.lp
{ sVw:d_ E
processErrorCode(responseCode); !3Pmjip
return -2; //-2 represent access is error m:[I$b6AY
} p^<(.+P4
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String sHeader; 9,`i[Dzp
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for(int i=1;;i++) L-D4>+
{ ob;|%_
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); z06,$OYz
//Utility.log(in.readLine()); vB_3lAJt@
sHeader=httpConnection.getHeaderFieldKey(i); ~nfOV*
if(sHeader!=null) x"NQatdq
{ 86Q3d%;-yo
if(sHeader.equals("Content-Length")) 2J&~b 8 :
{ "IT7.!=@9
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); %gAT\R_f
break; (b<0=U
} $KGMAg/H
} dVEs^ZtI
else |y eQz
break; pQ:^ ziwa3
} 6` TwP\!$/
} Z}uY%]
catch(IOException e){e.printStackTrace ();} )-Hs]D:
catch(Exception e){e.printStackTrace ();} "}*D,[C5e
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Utility.log(nFileLength); `7:uc@
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return nFileLength; {Fw"y %a^
} Si?s69
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//保存下载信息(文件指针位置) U\?D;ABQ%
private void write_nPos() ~. vridH
{ S1U0sP@o
try{ (!5Ta7X
output = new DataOutputStream(new FileOutputStream(tmpFile)); o&E8<e
output.writeInt(nStartPos.length); eb\S pdM6
for(int i=0;i<nStartPos.length;i++) S7f.^8
{ Y_:jc{?
// output.writeLong(nPos); b3E1S+\=~
output.writeLong(fileSplitterFetch.nStartPos); S=!WFKcJR
output.writeLong(fileSplitterFetch.nEndPos); <7\j\`
} i3N{Dt
output.close(); (is' ,4^b
} $ItmYj.m
catch(IOException e){e.printStackTrace ();} s"`~Xnf
catch(Exception e){e.printStackTrace ();} m.m6.
} :&vX0
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//读取保存的下载信息(文件指针位置) FDLo|aP/v
private void read_nPos() [8sYE h
{ KQNQ<OE4
try{ [q2:d^_FA
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Ol RXgJ
int nCount = input.readInt(); 4@{cK|
nStartPos = new long[nCount]; d/Q#Z
nEndPos = new long[nCount]; t2(X
for(int i=0;i<nStartPos.length;i++) .))jR:{3
{ =eU=\td^
nStartPos = input.readLong(); vY m:V:7Y2
nEndPos = input.readLong(); "@eGgQ
} /f1]U
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input.close(); Q/4-7
} t[`LG)
catch(IOException e){e.printStackTrace ();} Gg'!(]v
catch(Exception e){e.printStackTrace ();} .T9$O]:o
} <
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private void processErrorCode(int nErrorCode)
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{ *gwlW/%Fz
System.err.println("Error Code : " + nErrorCode); ]{6/6jl
} u>fMO9X}2
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//停止文件下载 D#&9zR86F
public void siteStop() &>Ve4!i
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{ Hh^ "c}
bStop = true; =\%ER/
for(int i=0;i<nStartPos.length;i++) K`Kv .4
fileSplitterFetch.splitterStop(); .8|wc
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} j J{F0o
} LRu,_2"
//负责部分文件的抓取 rH`\UZ{cc
**FileSplitterFetch.java prj(
*/ 940:NOgm
package NetFox; DH?n~qKpC
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import java.io.*; nKm#
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import java.net.*; p [C
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public class FileSplitterFetch extends Thread { ~6t!)QATnp
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String sURL; //File URL e&z@yy$
long nStartPos; //File Snippet Start Position 0! 3. .5==
long nEndPos; //File Snippet End Position 2X\Pw
int nThreadID; //Thread's ID -H6[{WVW!
boolean bDownOver = false; //Downing is over m~
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boolean bStop = false; //Stop identical 6AJk6W^Z
FileAccessI fileAccessI = null; //File Access interface jlj ge=#c2
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException "KP]3EyPc
{ [y9a.*]u/@
this.sURL = sURL; .gg0rTf=-
this.nStartPos = nStart; 6U ! P8q
this.nEndPos = nEnd; vd lss|
nThreadID = id; DSwb8q
fileAccessI = new FileAccessI(sName,nStartPos);//定位 X=whZ\EZ
} J]TqH`MA
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public void run() X+]>pA
{ lZ-U/$od
while(nStartPos < nEndPos && !bStop) S3Y.+. 0U
{ GmR3
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try{ jvB[bS`<H
URL url = new URL(sURL); U)8yd,qG[%
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); $$m0mK
httpConnection.setRequestProperty("User-Agent","NetFox"); P5?VrZy
String sProperty = "bytes="+nStartPos+"-"; _ARG
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httpConnection.setRequestProperty("RANGE",sProperty); BFW b0;+
Utility.log(sProperty); Qa_V
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InputStream input = httpConnection.getInputStream(); -NJpql{Cb
//logResponseHead(httpConnection); t/;0/ql\
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byte[] b = new byte[1024]; y-3'qq'E
int nRead; ^ 4<