/* dKe@JQ+-z
**SiteFileFetch.java Q}z{AZ
*/ E<a.LW@
package NetFox; (qk5f`O
import java.io.*; F25<+1kr
import java.net.*; sVD([`Nmc
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public class SiteFileFetch extends Thread { tD^a5qPh
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SiteInfoBean siteInfoBean = null; //文件信息Bean `g8tq
long[] nStartPos; //开始位置 3It8&x:
long[] nEndPos; //结束位置 O &\<F T5
FileSplitterFetch[] fileSplitterFetch; //子线程对象 qqD0R*(C
long nFileLength; //文件长度 [5pn@o
boolean bFirst = true; //是否第一次取文件 4`G=q^GL,
boolean bStop = false; //停止标志 L3>4t: 8
File tmpFile; //文件下载的临时信息 (o{)>D
DataOutputStream output; //输出到文件的输出流 -~]^5aa5n
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) _pW'n=}R
public SiteFileFetch(SiteInfoBean bean) throws IOException @_uFX!;
{ V"U~Q=`K
siteInfoBean = bean; ]Qy,#p'~&H
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); q\G{]dz?R
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); kpY%&
if(tmpFile.exists ()) DUPmq!A
{ 7\ ZL
bFirst = false; .n=xbx:=
read_nPos(); tJG (*
} hf[IEK
else p|;o5j{
{ =~;zVP
nStartPos = new long[bean.getNSplitter()]; ep`/:iY W
nEndPos = new long[bean.getNSplitter()]; 8\u;Wf
} W-!dMa
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} !?Tzk&'
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public void run() \ /sF:~=
{ t>-XT|lV
//获得文件长度 2"_ 18l.
//分割文件 ;p .j
//实例FileSplitterFetch Cb<~i
//启动FileSplitterFetch线程 tl2Lq0
//等待子线程返回 1(D1}fcul
try{ q2D`1nT
if(bFirst) fV v$K&
{ 6.vNe
nFileLength = getFileSize(); ?~]>H A:
if(nFileLength == -1) }"g@E-]N
{ ;S{ZC5
System.err.println("File Length is not known!"); q
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} J~:kuf21
else if(nFileLength == -2) 2%*|fF}I
{ :nTkg[49pJ
System.err.println("File is not access!"); )8\Z=uC
} C=M?
else FJ nG<5Rh
{ l!Nvn$hm
for(int i=0;i<nStartPos.length;i++) AZ}%MA;q
{ N/`g?B[
nStartPos = (long)(i*(nFileLength/nStartPos.length)); o(BYT9|.kw
} 1.xw'i
for(int i=0;i<nEndPos.length-1;i++) ~91uk3ST?
{ wP+'04H0
nEndPos = nStartPos[i+1]; r]xdhR5
} s'_$j$1
nEndPos[nEndPos.length-1] = nFileLength; _6|
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} s-y'<(ll
} C} |O#"t^\
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//启动子线程 >2*6qx>V
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; if\k[O 1T6
for(int i=0;i<nStartPos.length;i++) &Qz"nCvJ
{ 48W:4B'l9
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), _zAc 5rS
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), b49|4
nStartPos,nEndPos,i); E]D4']
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); #{.pQi})
fileSplitterFetch.start(); =#J9
} Q2??Kp]1
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 8j({=xbg&
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ?yda.<"g9Y
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", >!CH7wX
nEndPos = " + nFileLength); )yfOrsM
// fileSplitterFetch[nPos.length-1].start(); 'Sm/t/g"|
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%@)U/G6s}
//等待子线程结束 u9da]*\7y
//int count = 0; c1=;W$T(s
//是否结束while循环 a .B\=3xn
boolean breakWhile = false; m^(E:6T
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while(!bStop) ~W5>;6f\
{ m|g$'vjk
write_nPos(); %DHP
Utility.sleep(500); L8%=k%H(1
breakWhile = true; ant-\w>}
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for(int i=0;i<nStartPos.length;i++) K'ed5J
{ u^;sx/
if(!fileSplitterFetch.bDownOver) %6vMpB`g
{ P<g|y4h
breakWhile = false; _~(MA-l
break; kY0g}o'<
} AF07KA#
} Qt)7mf
if(breakWhile) $]`'Mi
break; ~%::r_hQ
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//count++; ueS[sN!
//if(count>4) U{.+*e18
// siteStop(); '{1W)X
} ;FIMCJS
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System.err.println("文件下载结束!"); &)/H?S;yN
} 3w6J V+?
catch(Exception e){e.printStackTrace ();} pU\xzL D
} zS>:7eG
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//获得文件长度 gs<qi'B
public long getFileSize() QvT-&|
{ Mf,Mcvs
int nFileLength = -1; tleK(^
try{ Z{|.xg sY
URL url = new URL(siteInfoBean.getSSiteURL()); 6H . L!tUI
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); lFzQG:k@
httpConnection.setRequestProperty("User-Agent","NetFox"); 5O4&BxQ~}
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int responseCode=httpConnection.getResponseCode(); %`<`z yf
if(responseCode>=400) =QO1FO
{ WhVmycdv
processErrorCode(responseCode); 8u~\]1(
return -2; //-2 represent access is error Dk.9&9mz
} PK|`}z9
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String sHeader; =G3J.S*Riy
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for(int i=1;;i++) QYCNO#*
{ O( sFs1
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ;V}FbWz^v6
//Utility.log(in.readLine()); \Lh<E5@]
sHeader=httpConnection.getHeaderFieldKey(i); zI*/u)48
if(sHeader!=null) qjRiTIp9q
{ `peJ s~V
if(sHeader.equals("Content-Length")) 'c+qBSDA
{ G5e Ls
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); +#*z"a`
break; gQcr'[[a
} c75vAKZ2
} Xrzh*sp
else 1Mhc1MU
break; p?gLW/n
} aPP<W|Cmo2
} m^s2kB4A[
catch(IOException e){e.printStackTrace ();} b-=[(]_$h
catch(Exception e){e.printStackTrace ();} 5Vm}<8{
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Utility.log(nFileLength); D8Waf
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return nFileLength; r.G/f{=<@
} })u}PQ
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//保存下载信息(文件指针位置) RxeRO2
private void write_nPos() E@}j}/%'O
{ ?g*T3S"
try{ HG6{`i
output = new DataOutputStream(new FileOutputStream(tmpFile)); v{*X@)$
output.writeInt(nStartPos.length); >^ 1S26
for(int i=0;i<nStartPos.length;i++) 9@EnmtR
{ .A[.?7g
// output.writeLong(nPos); ?m7" G)
output.writeLong(fileSplitterFetch.nStartPos); *A9{H>Vq
output.writeLong(fileSplitterFetch.nEndPos); $YQ&\[pDA
} X@4d~6k?
output.close(); 1? hd
} ik NFW*p
catch(IOException e){e.printStackTrace ();} iiDk k
catch(Exception e){e.printStackTrace ();} $I]x &cF
} BRLU&@G`1
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//读取保存的下载信息(文件指针位置) 2EcYO$R!
private void read_nPos() S_;:iC]B
{ !!#ale&
try{ Q+M3Pqy
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); kGeME
int nCount = input.readInt(); Kqu7DZ+W
nStartPos = new long[nCount]; uvM88#
nEndPos = new long[nCount]; =w?cp}HW
for(int i=0;i<nStartPos.length;i++) jCv+m7Z
{ sU!q~`; J
nStartPos = input.readLong(); x=+I8Q4:
nEndPos = input.readLong(); 54j
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} @Od u.F1e
input.close(); Lcb59Cs6e
} `8bp6}OD,
catch(IOException e){e.printStackTrace ();} ,$[lOFs
catch(Exception e){e.printStackTrace ();} "G)?
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} P.J}\;S T
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private void processErrorCode(int nErrorCode) dju{&wo~4
{ MT g Eq
System.err.println("Error Code : " + nErrorCode); V1qHl5"
} @V u[Tg}J
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//停止文件下载 39eoL;O_
public void siteStop() h*%1Jkxu
{ Q{kuB+s
bStop = true; cIkLdh
for(int i=0;i<nStartPos.length;i++) |@|D''u>6
fileSplitterFetch.splitterStop(); w]XBq~KO
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} ^jA^~h3(W
} ~vS.D r
//负责部分文件的抓取 @@&;gWr;
**FileSplitterFetch.java -fn~y1
*/ d|lzkY~
package NetFox; _JoA=<O!
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import java.io.*; r]{:{Z
import java.net.*; sS|5x
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public class FileSplitterFetch extends Thread { J{I?t~u
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String sURL; //File URL p};<l@
long nStartPos; //File Snippet Start Position +bU(-yRy5o
long nEndPos; //File Snippet End Position 7IRn
int nThreadID; //Thread's ID NU"X*g-x^
boolean bDownOver = false; //Downing is over >~k
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boolean bStop = false; //Stop identical >d|W>|8e
FileAccessI fileAccessI = null; //File Access interface n"vI> _|G
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException C_o.d~xm
{ F u)7J4Z
this.sURL = sURL; 1l{n`gR
this.nStartPos = nStart; hw1s^:|+2
this.nEndPos = nEnd; -)/>qFj)
nThreadID = id; +=v|kd
fileAccessI = new FileAccessI(sName,nStartPos);//定位 W%x#ps5%
} mJ HX
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public void run() L'(^[vR(
{ /on p<u
while(nStartPos < nEndPos && !bStop) O`4X[r1LD
{ 1Y_fX
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try{ e3.TGv7=
URL url = new URL(sURL); |?8wyP
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Wp ]u0w
httpConnection.setRequestProperty("User-Agent","NetFox"); 3)sqAs(
String sProperty = "bytes="+nStartPos+"-"; - >2ej4C
httpConnection.setRequestProperty("RANGE",sProperty); 1*5n}cU~
Utility.log(sProperty); 3!I8J:GZ:
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InputStream input = httpConnection.getInputStream(); p[RD[b
//logResponseHead(httpConnection); G:UdU{
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byte[] b = new byte[1024]; NEvt71k
int nRead; z&eJ?wb
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) m1TPy-|1
{ 1BF+sT3
nStartPos += fileAccessI.write(b,0,nRead); _=rXaTp
//if(nThreadID == 1) zx^)Qb/EL6
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); RGcT
} $>+-=XMVB
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Utility.log("Thread " + nThreadID + " is over!"); 6;VlX,,j
bDownOver = true; 0]T
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//nPos = fileAccessI.write (b,0,nRead); BD#4=u
} dX<UruPA
catch(Exception e){e.printStackTrace ();} Z"P{/~HG
} SU*P@?:/}
} 8`*(lKiL
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//打印回应的头信息 b{(:'.
public void logResponseHead(HttpURLConnection con) E3`KO'v%
{ /8.;
for(int i=1;;i++) ,L`qV
{
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String header=con.getHeaderFieldKey(i); :yv!
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if(header!=null) k(Ow.nkb
//responseHeaders.put(header,httpConnection.getHeaderField(header)); G G7N!eZ
Utility.log(header+" : "+con.getHeaderField(header)); 7"M7N^
else ^ K/B[8
break; fY>\VY$>
} B3K%V|;z
)
} n6oVx5/
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public void splitterStop() Vb/J`
{ A=BpB}b
bStop = true; t#kmtJC
} T
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} m"u 9AOH k
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/* d
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**FileAccess.java ucTkWqG
*//文件访问(定位,写) NmK%k jCx
package NetFox; \,~gA
import java.io.*; ci,o'`Q
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public class FileAccessI implements Serializable{ }Dk_gom_
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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 r/8,4:rh
RandomAccessFile oSavedFile; ZN^9w"A
long nPos; g~N)~]0{
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public FileAccessI() throws IOException _Tev503
{ <PXA`]x~
this("",0); tWD*uAb
} ZO:{9vt=/
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public FileAccessI(String sName,long nPos) throws IOException 3
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{ r0?`t!%V
oSavedFile = new RandomAccessFile(sName,"rw"); .3oFSc`q
this.nPos = nPos; #kk_iS>8
oSavedFile.seek(nPos); 2qw~hWX
} >(*jL
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public synchronized int write(byte[] b,int nStart,int nLen) (iH5F9WO
{ t:$p8qR
int n = -1; v||8Q\d
try{
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oSavedFile.write(b,nStart,nLen); aZ#c_Q#gZ
n = nLen; XgU]Ktl
} #>[+6y]U!
catch(IOException e) sLb[ZQ;j
{ H|==i2V{
e.printStackTrace (); g7#_a6
} znX2W0V
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return n; LR'F/.Dx
} 866n{lyL
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} 99H!~bSS
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/* FtT+Q$q=
**SiteInfoBean.java y~Sh|2x8v
*/ .Mdxbs6.C
package NetFox; XEY((VL0
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public class SiteInfoBean { eB^:+h#A_
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private String sSiteURL; //Site's URL @tRq(*(/:
private String sFilePath; //Saved File's Path jo0p/5;
private String sFileName; //Saved File's Name 66Huqo
private int nSplitter; //Count of Splited Downloading File
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public SiteInfoBean() +Q8Bin
{//nSplitter的缺省值为5 X#Ajt/XQ
//default value of nSplitter is 5 sGc4^Z%l?
this("","","",5); +wgNuj0=*
} }I9\=jT
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) sn]8h2z
{ Tr-gdX ;
sSiteURL= sURL; 4JT9EKo
sFilePath = sPath; Y_xPr%%A
sFileName = sName; yv[s)c}
this.nSplitter = nSpiltter; <