/* 8 f""@TTp
**SiteFileFetch.java i#uc
*/ yBd#*3K1
package NetFox; U]aH4N
import java.io.*; &vDK6w,
import java.net.*; ?"d25LyN
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public class SiteFileFetch extends Thread { -2{NIF^H
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SiteInfoBean siteInfoBean = null; //文件信息Bean Znv3h
long[] nStartPos; //开始位置 mHm"QBa!
long[] nEndPos; //结束位置 q0Hor
FileSplitterFetch[] fileSplitterFetch; //子线程对象 0gR!W3dh
long nFileLength; //文件长度 b6@(UneVM
boolean bFirst = true; //是否第一次取文件 Zj(2$9IU
boolean bStop = false; //停止标志 |;G9K`8
File tmpFile; //文件下载的临时信息 rF/k$_bFt
DataOutputStream output; //输出到文件的输出流 #s 4v0auK
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) (}]ae*
public SiteFileFetch(SiteInfoBean bean) throws IOException rq[+p
{ d]89DdZk
siteInfoBean = bean; )_m#|U?Rex
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 2|LgUA?<
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Ewfzjc
if(tmpFile.exists ()) j9V*f
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{ cgQ4 JY/6
bFirst = false; N8]DW_bsB
read_nPos(); kM#ZpI&0%
} 8PR1RCJ
else 7Fg-}lJAC
{ :o)4Y
nStartPos = new long[bean.getNSplitter()]; o=&tT,z
nEndPos = new long[bean.getNSplitter()]; p\"WX
} lURL;h
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} _P^ xX'v
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public void run() *dTI4k
{ o7qZy |\4S
//获得文件长度 qs["&\@
//分割文件 TQor-Cymz
//实例FileSplitterFetch W)RCo}f
//启动FileSplitterFetch线程 Vy-kogVt
//等待子线程返回 >ZE8EL
try{ <~rf;2LZ
if(bFirst) /2<1/[#
{ da'7*
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nFileLength = getFileSize(); ,KfBG<3
if(nFileLength == -1) {JJq/[j
{ -Um|:[*I
System.err.println("File Length is not known!"); ^lt;K{
} A6 D@#(D
else if(nFileLength == -2) f vAF0
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{ -0 e&>H%
System.err.println("File is not access!"); gbC!>LV
} H{XD>q.
else D^G5$hi
{ l6[0i
for(int i=0;i<nStartPos.length;i++) NoR=:Q 9e
{ ~h:/9q
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 2I8RO\zR
} I3#h
for(int i=0;i<nEndPos.length-1;i++) JUf{;nt
{ `T-lBwH
nEndPos = nStartPos[i+1]; c`F~vrr)X
} 2l8TX #K
nEndPos[nEndPos.length-1] = nFileLength; 3;N+5*-
} tn"n~;Bh?:
} Hq>"rrVhx
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//启动子线程 0Rme}&$
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; n#NE.ap$&,
for(int i=0;i<nStartPos.length;i++) ?HsQ417.H
{ ,X&(BQj h
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .y)Y20=o!
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), XDot3)2`
nStartPos,nEndPos,i); "!fvEE
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); >h[ {_+
fileSplitterFetch.start(); A#WvN>
} SEL7,8 Hm
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), |?kZfr&9q
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); miq"3
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", gvoo1 Sa
nEndPos = " + nFileLength); ThvVLK
// fileSplitterFetch[nPos.length-1].start(); e%B;8)7
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//等待子线程结束 `;:zZ8*
//int count = 0; jP{W|9@(
//是否结束while循环 @S-p[u
boolean breakWhile = false; _6"YWR
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while(!bStop) /.Fvl;!J;
{ ,pg\5b
write_nPos(); $PNS`@B
Utility.sleep(500);
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breakWhile = true; d{gj8
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for(int i=0;i<nStartPos.length;i++) /F3bZ3F
{ FTA[O.tiG
if(!fileSplitterFetch.bDownOver) X-Q;4M-CJ
{ /.[;u1z"^
breakWhile = false; 1>$}N?u:T
break; `4&a"`&$
} >o#^)LN
} ~kkwPs2V
if(breakWhile) ~I_v {
break; _i-(`5
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//count++; n*HRGJ
//if(count>4) (16U]s
// siteStop(); ?9?eA^X%
} 1l~(J:DT
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System.err.println("文件下载结束!"); >`@c9
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} tR;? o,T
catch(Exception e){e.printStackTrace ();} +(*;F4>
} itp$c|{
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//获得文件长度 #fb <\!iza
public long getFileSize() 5 GwXZ;(G
{ N?7vcN+-t)
int nFileLength = -1; X53TFRxnT
try{ xD(RjL+
URL url = new URL(siteInfoBean.getSSiteURL()); Qxvj`Ge
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); UB4 M=R|
httpConnection.setRequestProperty("User-Agent","NetFox"); RgPY,\_9+
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int responseCode=httpConnection.getResponseCode(); c
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if(responseCode>=400) y'a(>s(
{ K?4/x4p@
processErrorCode(responseCode); xz#.3|_('
return -2; //-2 represent access is error +Yuy%VT
} /j{`hi
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String sHeader; Gm]]Z_
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for(int i=1;;i++) g.cD3N
{ <MPoDf?h
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); )bM #s">Y
//Utility.log(in.readLine()); @rTAbEk{U
sHeader=httpConnection.getHeaderFieldKey(i); @\!9dK-W
if(sHeader!=null) icX$<lD
{ 6L2Si4OGjG
if(sHeader.equals("Content-Length")) Ww
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{ \[-z4Fxg|'
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); rRfPq
break; !*U#,qY
} xyoh
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} Gob;dku
else ~4{E0om@
break; LGOeBEAMV^
} &SzLEbU!
} w'Kc#2
catch(IOException e){e.printStackTrace ();} ddR_+B*H
catch(Exception e){e.printStackTrace ();} 7\q_^
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Utility.log(nFileLength); wc-ll&0Z
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return nFileLength; BBub'
} sF/X#GG-
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//保存下载信息(文件指针位置) B>^5h?(lt
private void write_nPos() +UK".
{ )A`Zgg'L7D
try{ ]Tje6iF
output = new DataOutputStream(new FileOutputStream(tmpFile)); gAx8r-` `
output.writeInt(nStartPos.length); ) OqQz7'
for(int i=0;i<nStartPos.length;i++) -*?Y4}mK
{ I)$of9
// output.writeLong(nPos); )P{I<TBI;
output.writeLong(fileSplitterFetch.nStartPos); 5>XrNc91
output.writeLong(fileSplitterFetch.nEndPos); &zCqF=/9U
} /f_c?|
output.close(); -zeodv7
} [n`SXBi+n
catch(IOException e){e.printStackTrace ();} X9:(}=E
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catch(Exception e){e.printStackTrace ();} &wZ ggp
} I<w`+<o(
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//读取保存的下载信息(文件指针位置) [_3Rhp:
private void read_nPos() ZOFhX$I
{ a.|4`*1[;
try{ JlR'w]d M,
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); b&$ ?.z
int nCount = input.readInt(); =A6/D
nStartPos = new long[nCount]; 5(/ 5$u
nEndPos = new long[nCount]; >`jsUeS
for(int i=0;i<nStartPos.length;i++) Oc;/'d2
{ ?kICYtY:_b
nStartPos = input.readLong(); XA[GF6W,Y
nEndPos = input.readLong(); /!o(Y8e>x
} -%XvWZvZ
input.close(); u_aln[oIv
} dVDQ^O&
catch(IOException e){e.printStackTrace ();} 8ycmvpJ
catch(Exception e){e.printStackTrace ();} )shzJ9G
} O<R6^0B42
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private void processErrorCode(int nErrorCode) h(,SAY_
{ lu^c^p;
System.err.println("Error Code : " + nErrorCode); {&Kq/sRz
} 5zlgmCGow
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//停止文件下载 4#5w^
public void siteStop() n9;+RhxA
{ vqLC?{i+
bStop = true; d[.kGytUt
for(int i=0;i<nStartPos.length;i++) WUid5e2
fileSplitterFetch.splitterStop(); /j]r?KAzw
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} x@+m_y
} -aiQp@^/J
//负责部分文件的抓取 G"jKYW
**FileSplitterFetch.java
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*/ U[zY0B
package NetFox; \lK iUy/
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import java.io.*; |Xblz1>DF
import java.net.*; IMY?L
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public class FileSplitterFetch extends Thread { \s2hep
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String sURL; //File URL u93=>S
long nStartPos; //File Snippet Start Position 0(s0<9s%
long nEndPos; //File Snippet End Position d\`A
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int nThreadID; //Thread's ID 0lNVQxG
boolean bDownOver = false; //Downing is over &nk6_{6
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boolean bStop = false; //Stop identical B$k<F8!%
FileAccessI fileAccessI = null; //File Access interface 8T'=lTJ
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException MN2#
{ cL&V2I5O
this.sURL = sURL; Q5e ,[1
this.nStartPos = nStart; /"?y @;Y~
this.nEndPos = nEnd; omM*h{z$$
nThreadID = id; |U?5%
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 yhe$A<Rl=
} .~V0>r~my
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public void run() pez^]I
{ %3'4QmpR
while(nStartPos < nEndPos && !bStop) ~V?O%1)k?\
{ 9Ot;R?>(
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try{ aG?ko*A;
URL url = new URL(sURL); 8WU
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); [~bfM6Jw
httpConnection.setRequestProperty("User-Agent","NetFox"); vy#n7hdCc
String sProperty = "bytes="+nStartPos+"-"; chsjY]b
httpConnection.setRequestProperty("RANGE",sProperty); \)VV6'zih
Utility.log(sProperty); 58*s\*V`\
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InputStream input = httpConnection.getInputStream(); hS&,Gm`^
//logResponseHead(httpConnection); L)VEA8}
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byte[] b = new byte[1024]; #NVtZs!V/
int nRead; 38!$9)
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) k,M%/AXd
{ 693J?Yah[
nStartPos += fileAccessI.write(b,0,nRead); I#Ay)+D
//if(nThreadID == 1) $rDeI-)S
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); @D8c-`LC"*
} :(?joLA
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Utility.log("Thread " + nThreadID + " is over!"); eX9{ wb(
bDownOver = true; qIK"@i[
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//nPos = fileAccessI.write (b,0,nRead); cD^n}'ej
} I,vy__sZ
catch(Exception e){e.printStackTrace ();} 7/NXb
} [P2$[|IM
} S =q.Y
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//打印回应的头信息 XF(I$Mxl6
public void logResponseHead(HttpURLConnection con) Mn $TWhg'
{ aQwc Py|1R
for(int i=1;;i++) bC?uyo"
{ 8qn1?Lb
String header=con.getHeaderFieldKey(i); >/1N#S#9
if(header!=null) %\=5,9A\
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 8Cz_LyL
Utility.log(header+" : "+con.getHeaderField(header)); QRXsLdf$$
else CfQOG7e@
break; ./mh9ax
} bT}P":*y
} CQ2{5
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public void splitterStop() = ^:TW%O
{ "T@9]>6.f
bStop = true; S*],18z?
}
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} rH8^Fl&jT
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/* <Bb$d@c
**FileAccess.java V(1Ldl'a
*//文件访问(定位,写) U 9TEC)
package NetFox; Lv+lLK
import java.io.*; EsXCi2]1
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