/* ; Z7!BU
**SiteFileFetch.java xS tsw5d
*/ 7<!x:G?C
package NetFox; anbw\yh8
import java.io.*; P>iZgv
import java.net.*; <I34@;R c
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public class SiteFileFetch extends Thread { l3>e-kP
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SiteInfoBean siteInfoBean = null; //文件信息Bean C 8wGbU6`
long[] nStartPos; //开始位置 LX7P?j
long[] nEndPos; //结束位置 /qy6YF8;y
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ~SBb2*ID
long nFileLength; //文件长度 [BD`h
boolean bFirst = true; //是否第一次取文件 mz6]=]1w
boolean bStop = false; //停止标志 CO@G%1#
File tmpFile; //文件下载的临时信息 C0N}B1-MU
DataOutputStream output; //输出到文件的输出流 'hU5]}=
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) vRC >=y*=
public SiteFileFetch(SiteInfoBean bean) throws IOException (FApkvy
{ AF"7 _
siteInfoBean = bean; Y?J/KW3
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 1gkpK`u(B
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); =bC' >qw}
if(tmpFile.exists ()) \z.bORy
{ {24>&<p
bFirst = false; 4vWiOcJF!O
read_nPos(); ; >H1A
} }6-olVg
else L5I!YP#v
{ !;|#=A9
nStartPos = new long[bean.getNSplitter()]; ao9#E"BfM
nEndPos = new long[bean.getNSplitter()]; 1k4\zVgi
} /-FV1G,h
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} KF+r25uy[+
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public void run() z8t;jw
{ g&y (-
//获得文件长度 o{#aF=`{
//分割文件 s,#We} bv
//实例FileSplitterFetch Vq]ixag2^
//启动FileSplitterFetch线程 v%cCJ SO#
//等待子线程返回 tcXXo&ZS
try{ lH=|Qu
if(bFirst) VBi gUK4
{ <<?32r~
nFileLength = getFileSize(); !hq*WtIk
if(nFileLength == -1) a_P|KRl
{ Og% Y._
System.err.println("File Length is not known!"); 41Q5%2
} _"@:+f,
else if(nFileLength == -2) a r8iuwfZ
{ ZN)EbTpc\a
System.err.println("File is not access!"); \O "`o4
} p*0[:/4
else _*e_?]G-
{ ;@qS#7SRB
for(int i=0;i<nStartPos.length;i++) kqih`E9P7B
{ J78.-J5 j0
nStartPos = (long)(i*(nFileLength/nStartPos.length)); Y}R$RDRL
} !i-t6f
for(int i=0;i<nEndPos.length-1;i++) $|g1 _;(G
{ !@Qk=Xkg
nEndPos = nStartPos[i+1]; uc+{<E3,%
} kQbZ!yl>[
nEndPos[nEndPos.length-1] = nFileLength; 082iEG
} .%n_{ab1
} nC,QvV
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//启动子线程 W
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; n-8/CBEH(
for(int i=0;i<nStartPos.length;i++) @ywtL8"1~
{ %Ve@DF8G
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), (K=0c6M3=
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), #[9UCX^=
nStartPos,nEndPos,i); 6k;5T
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); VnW6$W?g
fileSplitterFetch.start(); WRu(F54Sk
}
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), f> Jj5he/
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); h +B7BjA>G
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", xwZ1Q,'C
nEndPos = " + nFileLength); !Q|a R
// fileSplitterFetch[nPos.length-1].start(); 7<]&pSt=
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//等待子线程结束 1 jB0gNe
//int count = 0; 3@x[M?$
//是否结束while循环 4dFr~ {
boolean breakWhile = false; =JE<oVP8
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while(!bStop) m]U
{ 1(Vv-bq$
write_nPos(); QDY uJ&!h
Utility.sleep(500); j%`
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breakWhile = true; s:6K'*
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for(int i=0;i<nStartPos.length;i++) DI8I'c-P
{ l=XZBe*[g'
if(!fileSplitterFetch.bDownOver) m33&obSP
{ |GQq:MB;z
breakWhile = false; ru`7iqcz
break; Fu{VO~w
} bX38=.up
} yWZ_
if(breakWhile) 7#"NKxb
break; Y S7lB
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//count++; {91Y;p
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//if(count>4) o0No"8DnjH
// siteStop();
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} (^B1Kt!<
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System.err.println("文件下载结束!"); -ABj>y[
} /xgC`]-
catch(Exception e){e.printStackTrace ();} D#'CRJh;7
} )OQm,5F1
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//获得文件长度 (BH<\&yHE
public long getFileSize() 9-j-nx
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{ ]EF"QLNN(
int nFileLength = -1; :f Rta[
try{ uYs45 G
URL url = new URL(siteInfoBean.getSSiteURL()); 8?L-3/
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); BPW.&2?<
httpConnection.setRequestProperty("User-Agent","NetFox"); tC1'IE-h
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int responseCode=httpConnection.getResponseCode(); ~,s'-
if(responseCode>=400) tAjT-CXg
{ !4^Lv{1QZ
processErrorCode(responseCode); lu>G=uCJ
return -2; //-2 represent access is error 7C2Xy>d~
} -+qg
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String sHeader; JK{2hr_a
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for(int i=1;;i++) c9uu4%KG6<
{ LmsPS.It
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); p{qA%D
//Utility.log(in.readLine()); Z{ YuX
sHeader=httpConnection.getHeaderFieldKey(i); b[&ri:AC
if(sHeader!=null) -*&aE~Cs
{ _,F\%}
if(sHeader.equals("Content-Length")) HIj:?y
{ Y -BZV |
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 7Fa<m]k
break; h+q#|N
} B2BG*xa
} pIm ]WNX(
else ~nj+"d]
break; Eos;7$u[
} ='Oxy
} =RWY0| f
catch(IOException e){e.printStackTrace ();} 9l&G2 o
catch(Exception e){e.printStackTrace ();} fe6Op
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Utility.log(nFileLength); l) KN5V
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return nFileLength; kd
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} "$"<AKCwS
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//保存下载信息(文件指针位置) f4X}F|!h
private void write_nPos() S]&i<V1qX
{ N'5DB[:c:
try{ su-0G?c
output = new DataOutputStream(new FileOutputStream(tmpFile)); (d
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output.writeInt(nStartPos.length); f|!@H><
for(int i=0;i<nStartPos.length;i++) hL;??h,!_
{ !P6y_Frpe
// output.writeLong(nPos); !C.{nOfyv
output.writeLong(fileSplitterFetch.nStartPos); F zBny[F
output.writeLong(fileSplitterFetch.nEndPos); dt>!=<|k
} b` 9Zin
output.close(); {#{nU NW
} D{t0OvQag
catch(IOException e){e.printStackTrace ();} 5kv]k?
catch(Exception e){e.printStackTrace ();} xJvalb
} i079 V
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//读取保存的下载信息(文件指针位置) WN#dR~>
private void read_nPos() ZQJh5.B
{ ~1{~iB2G
try{ h/l?,7KHI
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Lhgs|*M
int nCount = input.readInt(); #|e5i9l*B
nStartPos = new long[nCount]; 3'`X_C|d53
nEndPos = new long[nCount]; u-dF~.x
for(int i=0;i<nStartPos.length;i++) c$3ZEe
{ yD ur9Qd6
nStartPos = input.readLong(); o\yqf:V8
nEndPos = input.readLong(); (b1rd
} N<lf,zGw
input.close(); L\kT9wWK|
} 0k|/]zfb
catch(IOException e){e.printStackTrace ();} l_=kW!l
catch(Exception e){e.printStackTrace ();} jM(!!AjpC
} ^m^,:]I0P
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private void processErrorCode(int nErrorCode) ]GHx<5Q:\
{ hB*3Py27L
System.err.println("Error Code : " + nErrorCode); }(if|skau
} CQ%yki
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//停止文件下载 Aq P\g k
public void siteStop() O Bp/:]
{ ~f%AbDye
bStop = true; e?b<-rL
for(int i=0;i<nStartPos.length;i++) d`Em)3v
fileSplitterFetch.splitterStop(); ol8uV{:"
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}
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} z15QFVm
//负责部分文件的抓取 [ w1"
**FileSplitterFetch.java rO{"jJ
*/ 5B=Wnau
package NetFox; F1o"H/:n
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import java.io.*; }GTy{Y*&
import java.net.*; u~d&<_Z
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public class FileSplitterFetch extends Thread { T)B1V,2j=
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String sURL; //File URL >(HUW^T/9z
long nStartPos; //File Snippet Start Position XUT\nN-N
long nEndPos; //File Snippet End Position {*CLWs4
int nThreadID; //Thread's ID &^YY>]1Py
boolean bDownOver = false; //Downing is over /`Lki>"
boolean bStop = false; //Stop identical 7u^6`P
FileAccessI fileAccessI = null; //File Access interface jQ31u
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException d|sI>6jD
{ |Y1<P^
this.sURL = sURL; <cz~q=%v2&
this.nStartPos = nStart; uL4@e
this.nEndPos = nEnd; c$'UfW
nThreadID = id; X|wXTecg*|
fileAccessI = new FileAccessI(sName,nStartPos);//定位 Cst>'g-yB
} Z@8amT;Y
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public void run() GO wd=]e
{ [P{Xg:0
while(nStartPos < nEndPos && !bStop) 6C/D&+4
{
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try{ ;o3
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URL url = new URL(sURL); ^HL#)fK2I
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ~ab"q%
httpConnection.setRequestProperty("User-Agent","NetFox"); tY:-13F
String sProperty = "bytes="+nStartPos+"-"; <ZrZSt+<
httpConnection.setRequestProperty("RANGE",sProperty); ^?xXP=/
Utility.log(sProperty); g%=\Wiit]
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InputStream input = httpConnection.getInputStream(); +dh]k=6
//logResponseHead(httpConnection); |#2<4sd
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byte[] b = new byte[1024]; xG}eiUbM`
int nRead; sX_ ^H%fd
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ;.:UfW
{ .(1$Q6yG
nStartPos += fileAccessI.write(b,0,nRead); JrL/LGY
//if(nThreadID == 1) a*IJ)'S
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); >LU*F|F]B
} kkOYC?zE?
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Utility.log("Thread " + nThreadID + " is over!"); aQ~x$T|
bDownOver = true; xZhD6'Zzz
//nPos = fileAccessI.write (b,0,nRead); [7s5Vt|
} mifYk>J^9
catch(Exception e){e.printStackTrace ();} (wY%$kW4
} MK[spV
} f@/qW!o
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//打印回应的头信息 <?J7Z|
public void logResponseHead(HttpURLConnection con) u('OHPqq
{ TwhK>HN
for(int i=1;;i++) m5x>._7le
{ *HXq`B
String header=con.getHeaderFieldKey(i); lb6s3b
if(header!=null) %!$-N!e
//responseHeaders.put(header,httpConnection.getHeaderField(header)); slmxit
Utility.log(header+" : "+con.getHeaderField(header)); !KlSw,&=.6
else 1aDDl-8,
break; ^#Y6
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} V_1# 7
} `x#~-
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public void splitterStop() [:=[QlvV
{ AP7W)S
bStop = true; eJA{]^Zf
} (hV"z; rI
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} 3"hR:'ts
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/* R
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**FileAccess.java $"(YE #]|
*//文件访问(定位,写) dtBV0$
package NetFox; !491
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import java.io.*; Mfr#IzNHN
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public class FileAccessI implements Serializable{ kC5,yj
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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 Ft rw3OxN
RandomAccessFile oSavedFile; FlG^'UD
long nPos; 2ML6Lkk
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public FileAccessI() throws IOException Lp WEu^j
{ "6.p=te
this("",0); a0.3$
} wg.fo:Q
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public FileAccessI(String sName,long nPos) throws IOException q$rA-`jw
{ \>`$x:
oSavedFile = new RandomAccessFile(sName,"rw"); 0Ida]H
this.nPos = nPos; o#) !b:/
oSavedFile.seek(nPos); ZcRm5Du~:
} $)]FCuv
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public synchronized int write(byte[] b,int nStart,int nLen) kte.E%.PE
{ "BfmX0&?
int n = -1; mZVOf~9E
try{ UjOhaj "h
oSavedFile.write(b,nStart,nLen); m =,c,*>
n = nLen; l1Q+hz5"*U
} PB67?d~
catch(IOException e) 7U`S9DDwq
{ ^!F5Cz 48
e.printStackTrace (); -+>r4P
} ^p zxwt
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return n; PZ(<eJ>
} arQ%
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} K[gWXBP
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/* "5JNXo,H
**SiteInfoBean.java kF,\bM
*/ 6Hbf9,vI
package NetFox; ZHF(q6T
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public class SiteInfoBean { _d| 62VS
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private String sSiteURL; //Site's URL .e2A*9,
private String sFilePath; //Saved File's Path /Ej]X`F
private String sFileName; //Saved File's Name -+=:+LhSMb
private int nSplitter; //Count of Splited Downloading File M1^C8cz
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public SiteInfoBean() %|(?!w7
{//nSplitter的缺省值为5 "8muMa8Q%
//default value of nSplitter is 5 !UMo4}Y
this("","","",5); yD"0=\
} \;*}zX
}S
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Xs>s|_T
{ .K@x4
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sSiteURL= sURL; +:,`sdv6o
sFilePath = sPath; +|?|8"Qg
sFileName = sName; mheU#&|
this.nSplitter = nSpiltter; R@<_Hb;Aeb
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} mUt,Z^ l`
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public String getSSiteURL() \+{t4Im
{ o3F|#op
return sSiteURL; ~n/Aq*
} ~y)bYG!G
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public void setSSiteURL(String value) p/hvQyE
{ kG$E
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sSiteURL = value; %'"HGZn b
} wHtJ_Y
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public String getSFilePath() g8I!E$
{ "]T$\PJun
return sFilePath; 7$ =Y\P
} 4bi NGl~
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public void setSFilePath(String value) 3I"NI.>*
{ 6 u-$
sFilePath = value; !/j,hO4Z4
} ?< cM^$lI>
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public String getSFileName() MzQ\rg_B7
{ c~}={4M]
return sFileName; SyK 9Is{8
} OM.k?1%+M
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public void setSFileName(String value) bLgL0}=n
{ *u>lx!g
sFileName = value; H8@8MFz\
} :dP~.ZY7
}*
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public int getNSplitter() $. %L
{ 7} be>(
return nSplitter; AF^T~?t
} .'|mY$U~]
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public void setNSplitter(int nCount) "8 N"Udu
{ OAv>g pw
nSplitter = nCount; kdp%
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} OJAx:&