/* 8N#.@\'kz.
**SiteFileFetch.java &oK&vgcj
*/ jcxeXp|00
package NetFox; su8()]|0x
import java.io.*; N#:W#C{16w
import java.net.*; Wp^|=
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public class SiteFileFetch extends Thread { hrfSe $8
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SiteInfoBean siteInfoBean = null; //文件信息Bean OG7U+d6
long[] nStartPos; //开始位置 v}^uN+a5
long[] nEndPos; //结束位置 =}SC .E\
FileSplitterFetch[] fileSplitterFetch; //子线程对象 "!Hm.^1
long nFileLength; //文件长度 j(_6.zf
boolean bFirst = true; //是否第一次取文件 8 }Maj
boolean bStop = false; //停止标志 JVPLE*T
File tmpFile; //文件下载的临时信息 OF!n}.O(
DataOutputStream output; //输出到文件的输出流 :pP l|"
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ~}K$z
public SiteFileFetch(SiteInfoBean bean) throws IOException 86Xf6Ea
{
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siteInfoBean = bean; _C$SaQty[Q
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 79'N/:.
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); dW|S\S'&
if(tmpFile.exists ()) dJ{'b'#
{ <Lq.J`|+
bFirst = false; ~c>]kL(,
read_nPos(); C7
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} k]A$?C0Q<%
else {=y~O
{ BUla2p
nStartPos = new long[bean.getNSplitter()]; 95tHire
nEndPos = new long[bean.getNSplitter()]; :YmFQ>e?
} "/\-?YJjw
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} F4&`0y:
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public void run() M >s,I^
{ `g(r.`t^
//获得文件长度 Ar[$%
//分割文件 %h=cwT6
//实例FileSplitterFetch r@H7J 5<Y-
//启动FileSplitterFetch线程 cbX<
//等待子线程返回 .+`Z:{:BC&
try{ 1jj.oa]
if(bFirst) +"[}gss!@
{ (V8lmp-F
nFileLength = getFileSize(); SRyot:l
if(nFileLength == -1) Q$^Kf]pD
{ fq[,9lK
System.err.println("File Length is not known!"); 9Jf.Ls
} #)<WQZ)
else if(nFileLength == -2) :c&F\Q=
{ zCpXF<_C
System.err.println("File is not access!"); 53?B.\
} Z<[f81hE&
else $4rMYEn08
{ /m*+N9)
for(int i=0;i<nStartPos.length;i++) um
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{ inv 5>OeG
nStartPos = (long)(i*(nFileLength/nStartPos.length)); sfEy
} {
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for(int i=0;i<nEndPos.length-1;i++) ]1i1_AR'`
{ XZ1<sm8t."
nEndPos = nStartPos[i+1]; =:7OS>x
} &^b mZj!
nEndPos[nEndPos.length-1] = nFileLength; An3%@;
} c
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} 4.i< `'
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//启动子线程 tCP;IU$
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; D TSK*a `
for(int i=0;i<nStartPos.length;i++) 'wP\VCL2>
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), H7R6Ljd?&S
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), dfA4OZ&
nStartPos,nEndPos,i); $_0~Jzt,
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ]$
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fileSplitterFetch.start(); gye'_AR?k
} >KnXj7
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ]tDuCZA
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); <+${gu?^
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", @m(ja@YC
nEndPos = " + nFileLength); ;kiL`K
// fileSplitterFetch[nPos.length-1].start(); $56Z/*
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//等待子线程结束 4?cIn4}
//int count = 0; Ok6c E
//是否结束while循环 ^# gR"\F`d
boolean breakWhile = false; "yc_*R(pU
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while(!bStop) IA?v[xu
{ b#z{["%Zp
write_nPos(); Y1h)0_0
Utility.sleep(500); x5)YZ~5
breakWhile = true; h`%}5})=
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for(int i=0;i<nStartPos.length;i++) O!#bM< *
{ ()I';o
if(!fileSplitterFetch.bDownOver) 3Zeh$DZ
{ bQu1L>c,Uw
breakWhile = false; @{y[2M} %]
break; ley:=(
} auV<=1<zJ
} pSlosv(6
if(breakWhile) bB`p-1
break; MZInS:Vj
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//count++; 'WLh
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//if(count>4) GH!Lu\y\
// siteStop(); EvEI5/z
} E[N3`"
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System.err.println("文件下载结束!"); AUvUk<a
} 8@Kvh|
catch(Exception e){e.printStackTrace ();} \9GJa"xA`
} *D$[@-7
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//获得文件长度 1:r 8p6
public long getFileSize() P7`sJ("#
{ */JMPw&
int nFileLength = -1; Y
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try{ .W)%*~ O!;
URL url = new URL(siteInfoBean.getSSiteURL()); |X$O'Gf#n
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Nn%[J+F
httpConnection.setRequestProperty("User-Agent","NetFox");
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int responseCode=httpConnection.getResponseCode(); "<y0D!&
if(responseCode>=400) 6!GO{2d"
{ OcWzo#q4[
processErrorCode(responseCode); W<AxctId
return -2; //-2 represent access is error orcPKCz|"
} gwyHDSo8:a
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String sHeader; -
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for(int i=1;;i++) 8qY\T0
{ -U"h3Ye^
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 3h-C&C
//Utility.log(in.readLine()); !jeoB
sHeader=httpConnection.getHeaderFieldKey(i); !^:)zORYR
if(sHeader!=null) E 9LKVs}
{ D[5Qd)PIL
if(sHeader.equals("Content-Length")) wgb
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{ [aF^ D;o
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); }c$@0x;YQ
break; X!vBD
} 18xT2f
} dO{a!Ca
else quPNwNy
break; GYq.!d@O
} Qg\{d)X[N
} SQ_w~'(
catch(IOException e){e.printStackTrace ();} Bi'qy]%
catch(Exception e){e.printStackTrace ();} uGxh}'&
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Utility.log(nFileLength); pSvqGJU3
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return nFileLength; pW>?%ft.
} y)B>g/Hoh
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//保存下载信息(文件指针位置) ;MH<T6b
private void write_nPos() 6/Pw'4H9$
{ hrRkam !y
try{ +l "z
output = new DataOutputStream(new FileOutputStream(tmpFile)); t69C48}15
output.writeInt(nStartPos.length); OcBKn=8
for(int i=0;i<nStartPos.length;i++) t[ Zoe+&
{ {|;5P.,l
// output.writeLong(nPos); ,W!v0*uxp&
output.writeLong(fileSplitterFetch.nStartPos); >*hY1@N1
output.writeLong(fileSplitterFetch.nEndPos); X<OOgC
} {O4y Y=G
output.close(); g=T
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} <]jKpJ{3N
catch(IOException e){e.printStackTrace ();} #@*;Y(9Ol
catch(Exception e){e.printStackTrace ();} X
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} w[bhm$SX]B
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//读取保存的下载信息(文件指针位置) sSM^net0
private void read_nPos() ^`96L
{ |V 3AA
try{ {g%F 3-
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Dp5hr 8bT
int nCount = input.readInt(); bP4<q?FKcN
nStartPos = new long[nCount]; 'k?%39
nEndPos = new long[nCount]; R*v~jR/
for(int i=0;i<nStartPos.length;i++) Oc|`<^m
{ )_vE"ryThA
nStartPos = input.readLong(); 7 fE
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nEndPos = input.readLong(); ?-y!FD}m&
} \
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input.close(); LZ97nvK
} km)5?
catch(IOException e){e.printStackTrace ();} &rcC7v K9
catch(Exception e){e.printStackTrace ();} /ynvQ1#uA
} HR/"Nwr
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private void processErrorCode(int nErrorCode) ^X&n-ui
{ rM
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System.err.println("Error Code : " + nErrorCode); [%8t~zg
} V8aLPJ0_
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//停止文件下载 2W}f|\8MX
public void siteStop() 3M;[.b
{ FXHcy:)}G
bStop = true; C;u8qVI
for(int i=0;i<nStartPos.length;i++) ,r&:C48dI
fileSplitterFetch.splitterStop(); Eagl7'x
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} k3-'!dW<
} ;oKN 8vI#7
//负责部分文件的抓取 &I&:
**FileSplitterFetch.java XzX-Q'i=n0
*/ O[N}@%HMW
package NetFox; *bl*R';
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import java.io.*; b
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import java.net.*; <$f7&6B
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public class FileSplitterFetch extends Thread { Tn$/9<Q
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String sURL; //File URL rNdeD~\
long nStartPos; //File Snippet Start Position 0I8w'/s_g9
long nEndPos; //File Snippet End Position ,9(=Iu-?1
int nThreadID; //Thread's ID EXdx$I=X
boolean bDownOver = false; //Downing is over rRTAWAs%T
boolean bStop = false; //Stop identical J?yNZK$WqN
FileAccessI fileAccessI = null; //File Access interface [<HU~PP
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException h83;}>
{ 'u\my
this.sURL = sURL; Y7|R vLWoP
this.nStartPos = nStart;
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this.nEndPos = nEnd; [7K-L6X
nThreadID = id; X-tc Ud
fileAccessI = new FileAccessI(sName,nStartPos);//定位 Ca SoR |
} Ya#,\;dTT
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public void run() O4Wn+$AN
{ sHk,#EsKH
while(nStartPos < nEndPos && !bStop) 'nK(cKDIG
{ WBo|0(#
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try{ /[[_}\xI%
URL url = new URL(sURL); rmX'Ym9#
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); i\2d1Z
httpConnection.setRequestProperty("User-Agent","NetFox"); cJ6n@\
String sProperty = "bytes="+nStartPos+"-"; uxGY/Zf
httpConnection.setRequestProperty("RANGE",sProperty); =~)J:x\F
Utility.log(sProperty); X+'z@xpj
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InputStream input = httpConnection.getInputStream(); Js`xTH'
//logResponseHead(httpConnection); *5SOXrvhu6
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byte[] b = new byte[1024]; SR,id B&i
int nRead; iIOA5 4!o
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) UDJ{iZ
{ o%!8t_1mR
nStartPos += fileAccessI.write(b,0,nRead); :# 1d;jx
//if(nThreadID == 1) DNARe!pK
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Kt(Z&@
} ?s4-2g
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Utility.log("Thread " + nThreadID + " is over!"); =%p%+F@RlW
bDownOver = true; X[Lwx.Ly8
//nPos = fileAccessI.write (b,0,nRead); mN>7vJ
} q/
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catch(Exception e){e.printStackTrace ();} d?j_L`?+
} C'HW`rh.^
} -P;_j,~U
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//打印回应的头信息 c:
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public void logResponseHead(HttpURLConnection con) =")}wl=s
{ NVEjUt/
for(int i=1;;i++) J 3oEN'8S
{ CNC3">Dk~9
String header=con.getHeaderFieldKey(i); MYQZqlV
if(header!=null) fS08q9,S /
//responseHeaders.put(header,httpConnection.getHeaderField(header)); l8I`%bu
Utility.log(header+" : "+con.getHeaderField(header)); P@gVzx)M
else vvJ{fi
break; 7M#eR8*[se
} `>M-J-J
} &RRH