/* 6qTMHRI
**SiteFileFetch.java Z+6WG
*/ :8/ 6dx@Y(
package NetFox; rX5"p!z
import java.io.*; F|m &n&
import java.net.*; YCb|eS^u
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public class SiteFileFetch extends Thread { McS]aJfrk
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SiteInfoBean siteInfoBean = null; //文件信息Bean l8+)Xk>
long[] nStartPos; //开始位置 ^`SEmYb;
long[] nEndPos; //结束位置 }s'=w]m
FileSplitterFetch[] fileSplitterFetch; //子线程对象 jz=V*p}6
long nFileLength; //文件长度 NhNd+SCZ@
boolean bFirst = true; //是否第一次取文件 y!x[N!a
boolean bStop = false; //停止标志 b|Ge#o
File tmpFile; //文件下载的临时信息 C_q2bI
DataOutputStream output; //输出到文件的输出流 oO3^9?Z
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) }|;j2'(R
public SiteFileFetch(SiteInfoBean bean) throws IOException /\mYXi\
{ LQ%QFfC
siteInfoBean = bean; E.Th}+
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); `\"<%CCe
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); *}#HBZe(9
if(tmpFile.exists ()) '4#NVXVQm
{ >cmz JS
bFirst = false; &3"ODAp'
read_nPos(); *$R9'Yo}F
} c1FSQ
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else _](y<O^9yO
{ b5]<!~Fv:`
nStartPos = new long[bean.getNSplitter()];
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nEndPos = new long[bean.getNSplitter()]; L.-qTh^P
} l4taD!WD/
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} (7!pc
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public void run() %rrD+
{ OIw[sum2
//获得文件长度 bw/mF5AsW
//分割文件 BKI-Dh
//实例FileSplitterFetch a[j]fv*6
//启动FileSplitterFetch线程 gn.)_
//等待子线程返回 6+ptL-Zt<
try{ c'VCCXe
if(bFirst) $>_`.*I/
{ 9mXmghoCO
nFileLength = getFileSize(); vyWx{@
if(nFileLength == -1) ALO/{:l(
{ _D{FQRU<YD
System.err.println("File Length is not known!"); t(PA+~sIp
} `.pd %\
else if(nFileLength == -2) nwfu@h0G
{ @m%B>X28F
System.err.println("File is not access!"); !UPB4I
} WnOYU9;%
else A@d 2Ukv
{ Wql=PqF
for(int i=0;i<nStartPos.length;i++) vNdX
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); go6;_
} (Lh!7g/0N
for(int i=0;i<nEndPos.length-1;i++) Df2$2VU
{ ^e_uprZWm
nEndPos = nStartPos[i+1]; JS\]|~Gd
} ,+OVRc
nEndPos[nEndPos.length-1] = nFileLength; 3rN}iSF^
} L_:~{jV
} &Y9%Y/Y
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//启动子线程 `<T4En
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; doX`NbA
for(int i=0;i<nStartPos.length;i++) dikX_ Q>D
{ "mU2^4q
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), XJl
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), yD!GgnW
nStartPos,nEndPos,i); 7iv g3*
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ER&\2,fZ
fileSplitterFetch.start(); "9Q_lVI|Q
} E;4d lL`*
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), KC9VQeSc
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Wq 1OYZ,
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", YaQ5Z-c
nEndPos = " + nFileLength); d0%Wz5Np
// fileSplitterFetch[nPos.length-1].start(); fo>_*6i74
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//等待子线程结束 9Ou}8a?m"
//int count = 0; As^eL/m2L
//是否结束while循环 \YF;/KwX$
boolean breakWhile = false; N;}X$b5Y @
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while(!bStop) Y![i=/
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write_nPos(); tOk=m'aUK
Utility.sleep(500); Abmi=]\bx
breakWhile = true; @'hkU$N)
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for(int i=0;i<nStartPos.length;i++) +m~3InWq
{ qn{9vr
if(!fileSplitterFetch.bDownOver) EUgKJ=jw
{ OQg}E@LZ
breakWhile = false;
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break; Lew
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} ^K~=2^sh
} `@6y Wb:X
if(breakWhile) ZN'B@E=p
break; }+u<w{-7/
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//count++; &g*1 If
//if(count>4) .]<iRf[\[
// siteStop(); Gcxz$.(
} C4dCaiX
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System.err.println("文件下载结束!"); 9&B#@cw
} qI74a F
catch(Exception e){e.printStackTrace ();} x @9rc,by
} Lke!VS!P&
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//获得文件长度 z<yqQ[
public long getFileSize() 7o*~zDh@fH
{ 3_i29ghv
int nFileLength = -1; &wkbr2P
try{ (Nf!E[}Z
URL url = new URL(siteInfoBean.getSSiteURL()); wYv++<
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); %(\et%[]
httpConnection.setRequestProperty("User-Agent","NetFox"); n{m[
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int responseCode=httpConnection.getResponseCode(); H:z<]Rc
if(responseCode>=400) UhU+vy6)/
{ :2A-;P4
processErrorCode(responseCode); a`C2:Z23(#
return -2; //-2 represent access is error nx{X^oc8e
} rC/z8m3z
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String sHeader; ,n>K$
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for(int i=1;;i++) +J42pSxzoo
{ bNvc@oo
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ej(< Le\
//Utility.log(in.readLine()); `'bu8JK
sHeader=httpConnection.getHeaderFieldKey(i); 1u }2}c|
if(sHeader!=null) {HVsRpNEf
{ |F~U
if(sHeader.equals("Content-Length")) "p>kiNu
{ $ 93j;
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); b'`C<Rk
break; /}d)g4\j
} H$zD k
} m'ZxmsFo
else ehMpo BL
break; b0N7[M1Xl
} h?->A#
} QbWeQ[V{
catch(IOException e){e.printStackTrace ();} )fke;Y0
catch(Exception e){e.printStackTrace ();} i>pUTT
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Utility.log(nFileLength); Q$yQ^ mG
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return nFileLength; .SWn/Kk
} OZ<fQf.Gh}
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//保存下载信息(文件指针位置) 2>^jMln
private void write_nPos() 97}l`z;Z
{ .&KC2#4
try{ O%} hNTS"
output = new DataOutputStream(new FileOutputStream(tmpFile)); @<
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output.writeInt(nStartPos.length); 1w 9zl}
for(int i=0;i<nStartPos.length;i++) }ol<DV
{
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// output.writeLong(nPos); IfCa6g<&(
output.writeLong(fileSplitterFetch.nStartPos); EPEn"{;U
output.writeLong(fileSplitterFetch.nEndPos); I$fm"N
} =u5( zaBe
output.close(); R]S!PSoL
} f Q2U|
catch(IOException e){e.printStackTrace ();} lt0byn$vz
catch(Exception e){e.printStackTrace ();} LdX'V]ITh
} StLbX?d 6
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//读取保存的下载信息(文件指针位置) 92/_!P>
private void read_nPos() aSfAu!j)
{ Nqbm,s
try{ [ofZ1hB4
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); >H]|R }h
int nCount = input.readInt(); Xh*NuHH
nStartPos = new long[nCount]; r{Z4ifSl(
nEndPos = new long[nCount]; zhI"++
for(int i=0;i<nStartPos.length;i++) 0T:U(5Y9
{ 5^{).fig
nStartPos = input.readLong(); #\3X;{
nEndPos = input.readLong(); ev5m(wR
} 0P4g6t}e
input.close(); N8{
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} )gxZ &n6
catch(IOException e){e.printStackTrace ();} eqU y>
catch(Exception e){e.printStackTrace ();} R, UYwI
} 7)x788Z6
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private void processErrorCode(int nErrorCode) -&LF`V&3w
{ x0dBg~I
System.err.println("Error Code : " + nErrorCode); .JWN\\
} 6{[ uCxxl
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//停止文件下载 Mg\8m-L^
public void siteStop() G,@Jo[e
{ /+?eSgM/
bStop = true; kcl Z+E
for(int i=0;i<nStartPos.length;i++) Y\9zjewc
fileSplitterFetch.splitterStop(); ?Pt*4NaT;
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} p3cb_
} 1Zgv+.
//负责部分文件的抓取 %Lfy!]Ru
**FileSplitterFetch.java F@-8J?Hl:
*/ VVi3g
package NetFox; :io[9B [
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import java.io.*; r]bG,?|
import java.net.*; #>">fs]
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public class FileSplitterFetch extends Thread { k6|/ ik9C
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String sURL; //File URL zw%1a 3!
long nStartPos; //File Snippet Start Position >u?a#5R:m
long nEndPos; //File Snippet End Position b}m@2DR'|m
int nThreadID; //Thread's ID L&Pj0K-HT3
boolean bDownOver = false; //Downing is over )bB
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boolean bStop = false; //Stop identical V`"Cd?R0Z
FileAccessI fileAccessI = null; //File Access interface d+IN-lR(
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException F<Z13]|
{ idY
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this.sURL = sURL; +-MieiKv
this.nStartPos = nStart; _>Oc>.MB
this.nEndPos = nEnd; qGECw#
nThreadID = id; D4U<Rn6N_5
fileAccessI = new FileAccessI(sName,nStartPos);//定位 Ak,T{;rD
} )3)fq:[
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public void run() *XluVochrb
{ NV;T*I8O
while(nStartPos < nEndPos && !bStop) L=kETJ:g
{ $`"$ZI6[
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try{ {:`XhPS<B
URL url = new URL(sURL); YZ/2:[b
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ;b0;66C8|
httpConnection.setRequestProperty("User-Agent","NetFox"); )bK3%>H#
String sProperty = "bytes="+nStartPos+"-"; m~8=?R+m
httpConnection.setRequestProperty("RANGE",sProperty); ;1Q@d
Utility.log(sProperty); mC!^`y)
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InputStream input = httpConnection.getInputStream(); wRe2sjM
//logResponseHead(httpConnection); Ca#T?HL
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byte[] b = new byte[1024]; \-{2E
int nRead; ]?0]K!7Ea
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) n<DZb`/uHZ
{ @6{F4
nStartPos += fileAccessI.write(b,0,nRead); !'kr:r}gg
//if(nThreadID == 1) ;^ YpQP
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); u'Z^|IVfo
} 88A,ll%
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Utility.log("Thread " + nThreadID + " is over!"); V_jGL<X|
bDownOver = true; kQO5sX$;
//nPos = fileAccessI.write (b,0,nRead); He}"e&K
} h%Uq
catch(Exception e){e.printStackTrace ();} (T =u_oe
} dRXrI
} LCok4N$o
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//打印回应的头信息 Twpk@2=l
public void logResponseHead(HttpURLConnection con) '$q3 Ze
{ q
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for(int i=1;;i++) G3.\x_;k
{ So}pA2[0
String header=con.getHeaderFieldKey(i); $~'G<YYF4
if(header!=null) Ej$oRo{IG
//responseHeaders.put(header,httpConnection.getHeaderField(header)); ^ARkjYt
Utility.log(header+" : "+con.getHeaderField(header)); @{@)gE
else cs)R8vuB)z
break; OZ2faf
} 6Q}>=R^h
} ;rt\
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public void splitterStop() Fuo.8
{ ,gIeQ!+vy
bStop = true; OwLJS5r@<-
} fTd":F
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} j&