/* #*yM2H"7,;
**SiteFileFetch.java ).0V%}>
*/ * ?
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package NetFox; /S7+B]
import java.io.*; ]z-']R;
import java.net.*; l zfD)TWb
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public class SiteFileFetch extends Thread { &YT_#M
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SiteInfoBean siteInfoBean = null; //文件信息Bean hmK8jl<6
long[] nStartPos; //开始位置 j+_S$T8w
long[] nEndPos; //结束位置 \6`v.B&v
FileSplitterFetch[] fileSplitterFetch; //子线程对象 >AR Tr'B
long nFileLength; //文件长度 -"~L2f"?
boolean bFirst = true; //是否第一次取文件 j~,h)C/v
boolean bStop = false; //停止标志 T&9`?QD
File tmpFile; //文件下载的临时信息 94T}iY.
DataOutputStream output; //输出到文件的输出流 P$p@5 hl
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 8_xnWMOe
public SiteFileFetch(SiteInfoBean bean) throws IOException jd ["eI
{ o"'iXUJ
siteInfoBean = bean; %B#hb<7}
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 5Y(r\Dd
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 'RDWU7c9]
if(tmpFile.exists ()) y#b;uDY
{ xGKfej9
bFirst = false; wrH7 pd
read_nPos(); jZXVsd
} LQh^;
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else wqJ*%
{ a`7%A H)
nStartPos = new long[bean.getNSplitter()]; OOCQsoN
nEndPos = new long[bean.getNSplitter()]; E^b
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} {iA^rv|
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} $z= 0[%L
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public void run() NNwc!x)*
{ (N,nux(0k
//获得文件长度 |WB"=PE
//分割文件 WI,40&<
//实例FileSplitterFetch CfQf7-
//启动FileSplitterFetch线程 fH-NU-"
//等待子线程返回 5B}3GBA
try{ (FM4 ^#6
if(bFirst) Hab!qWK`
{ OZG0AX+=#
nFileLength = getFileSize(); O[; +i
if(nFileLength == -1) pPoH5CzcK
{ S*4f%!
System.err.println("File Length is not known!"); <e'P%tG'
} fk+1# 7{
else if(nFileLength == -2) W&<g} N+
{ $v FrU v
System.err.println("File is not access!"); {5SfE$r
} hO#HvW
else LRWOBD
{ 5!<o-{J[(=
for(int i=0;i<nStartPos.length;i++) #-,g&)`]
{ S2ark,sp6
nStartPos = (long)(i*(nFileLength/nStartPos.length)); Zotz?jVVr
} ;U
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for(int i=0;i<nEndPos.length-1;i++) iDZrK%fl
{ 0[.3Es:_
nEndPos = nStartPos[i+1]; W3^.5I
} |,3l`o
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nEndPos[nEndPos.length-1] = nFileLength; 7krh4
} EY]a6@;
} :JR<SFjm
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//启动子线程 Z+0?yQ=%
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; jM*AL
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for(int i=0;i<nStartPos.length;i++) |Td_S|:d
{ 4K E)g
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), UIn^_}jF`
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ?gLAWz
nStartPos,nEndPos,i); =qw&dwIQ
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); S9J5(lYv~N
fileSplitterFetch.start(); =:4?>2)
} N*f^Z#B]
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Rxx>{+f4M
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); L.kD,'G}>
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", yOc|*O=]U
nEndPos = " + nFileLength); Fqo&3+J4
// fileSplitterFetch[nPos.length-1].start(); J2'K?|,m
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//等待子线程结束 > =Jsv
//int count = 0; prUHjS
//是否结束while循环 85}
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boolean breakWhile = false; Bq *[c=(2
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while(!bStop) l2(.>-#
{ dN<5JQql
write_nPos(); wk@yTTnb
Utility.sleep(500); ;|6FdU
breakWhile = true; 2hy NVG&$
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for(int i=0;i<nStartPos.length;i++) FRgLlp8x
{ {EL'd!v7e
if(!fileSplitterFetch.bDownOver) v~}5u
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{ YwXXXh
breakWhile = false; N#UXP5C(
break; %[XY67A3I
} ?I\v0H*
} GQ<Ds{exs>
if(breakWhile) Y#`Lcg+r,
break; awFhz 6
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//count++; x<@kjfm5
//if(count>4) HVGr-/
// siteStop(); 0Z,{s158L
} O~6Q;q P
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System.err.println("文件下载结束!"); g#qNHR
} P_}/#N{C
catch(Exception e){e.printStackTrace ();} q`[K3p
} {y b D
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//获得文件长度 \B&6TeR
public long getFileSize() Xem5@
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{ e/>:K' {
int nFileLength = -1; qOi5WX6F/
try{ XVF^,Yf
URL url = new URL(siteInfoBean.getSSiteURL()); f^?uY8<
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ;E#\
httpConnection.setRequestProperty("User-Agent","NetFox"); \TUE<<?1s
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int responseCode=httpConnection.getResponseCode(); #k9<
if(responseCode>=400) +#s;yc#=2
{ \?&Au
processErrorCode(responseCode); D%U:!|G
return -2; //-2 represent access is error YjLe(+WQ
} -\Z `z}D
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String sHeader; l{5O5%\,
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for(int i=1;;i++) > :Ze4}(
{ i3PKqlp.
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); j o_
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//Utility.log(in.readLine()); E:w:4[neh
sHeader=httpConnection.getHeaderFieldKey(i); g~!$i`_b
if(sHeader!=null) P"F{=\V1`<
{ jV^C19
if(sHeader.equals("Content-Length")) Q]rqD83((
{ ,H39V+Y*
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); [(|v`qMv/g
break; !5UfWk\G
} }lP 5GT2
} 9P.(^SD][z
else RqLNp?V%
break; HabzCH
} @Tr&`Hi
} 2]2H++
catch(IOException e){e.printStackTrace ();} <GF @L
catch(Exception e){e.printStackTrace ();} #6W,6(#^#
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Utility.log(nFileLength); eg3L:rk_
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return nFileLength; iYKU[UP?
} `*yAiv>
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//保存下载信息(文件指针位置) ,w2WS\`%
private void write_nPos() b/<mRQ{
{ 2\0Oji\6
try{ (A{NF(
output = new DataOutputStream(new FileOutputStream(tmpFile)); r5 yO5W
output.writeInt(nStartPos.length); =& -[TPW
for(int i=0;i<nStartPos.length;i++) OOB^gf}$'
{ zZ=$O-&%
// output.writeLong(nPos); T'1gy}
output.writeLong(fileSplitterFetch.nStartPos); `FJ|W6%
output.writeLong(fileSplitterFetch.nEndPos); RUGv8"j
} aFY u}kl
output.close(); 7>n"}8i
} J :S'uxM
catch(IOException e){e.printStackTrace ();} <m-.aK{9
catch(Exception e){e.printStackTrace ();} Y"!uU.=xJ
} 7petHi
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//读取保存的下载信息(文件指针位置) zOGR+Gq_Z
private void read_nPos() m^I,}1H4
{ \c7>:DH
try{ ?`AGF%zp
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ."mlSW"Wm
int nCount = input.readInt(); 5v9Vk`3'
nStartPos = new long[nCount]; 4:1)~z
nEndPos = new long[nCount]; Mo^`\/x!
for(int i=0;i<nStartPos.length;i++) 2
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{ kNPDm6m
nStartPos = input.readLong(); Z]vL%Gg*!
nEndPos = input.readLong(); QCpM|,drS
} 3t(c_:[%
input.close(); V1<`%=%_W
} +a$|Sc
catch(IOException e){e.printStackTrace ();} X:=c5*0e
catch(Exception e){e.printStackTrace ();} ut&/\k=N
} 6 h'&6
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private void processErrorCode(int nErrorCode) o\6iq
{ L"vj0@n'0
System.err.println("Error Code : " + nErrorCode); SW9fE:v
} <1@
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//停止文件下载 v0@)t&O
public void siteStop() w sY}JT
{ @Zm Jz
bStop = true; `ZGcgO<c\
for(int i=0;i<nStartPos.length;i++) 4tJa-7
fileSplitterFetch.splitterStop(); ,W*H6fw+
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} Gvx[8I
} ^Mytp> 7
//负责部分文件的抓取 *Km7U-BG
**FileSplitterFetch.java w> 979g
*/ YV([2
package NetFox; 8_Z/ o5s
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import java.io.*; QUOKThY?
import java.net.*; \dkOK`)b
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public class FileSplitterFetch extends Thread { CAgaEJhX3
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String sURL; //File URL (lWq[0^N
long nStartPos; //File Snippet Start Position g}Qx`65:
long nEndPos; //File Snippet End Position 4~|<`vqN
int nThreadID; //Thread's ID ycX{NDGs
boolean bDownOver = false; //Downing is over ngyY
boolean bStop = false; //Stop identical %l$W*.j|;
FileAccessI fileAccessI = null; //File Access interface !ALZBB .r(
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException J?Iq9f
{ L`3n2DEBf
this.sURL = sURL; ;BBpN`T
this.nStartPos = nStart; lG"H4Aa>
this.nEndPos = nEnd; g.C5r]=+&
nThreadID = id; }5b M1h#z
fileAccessI = new FileAccessI(sName,nStartPos);//定位 Jqfm@Y
} u#jC#u^M
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public void run() 1"]P`SY$r
{ wahZK~,EaY
while(nStartPos < nEndPos && !bStop) YQVcECj
{ K=\&+at1
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try{ DTY<0Q.
URL url = new URL(sURL); FvXqggfGv
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); j
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httpConnection.setRequestProperty("User-Agent","NetFox"); z<n-Gzwk
String sProperty = "bytes="+nStartPos+"-"; tXq)nfGe{
httpConnection.setRequestProperty("RANGE",sProperty); ! OE*z $\
Utility.log(sProperty); FPv"N'/
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InputStream input = httpConnection.getInputStream(); Y&f\VNlT
//logResponseHead(httpConnection); #`ejU &!6
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byte[] b = new byte[1024]; .v])S}K
int nRead; _\zQ"y|G
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) {fz$Z!8-
{ `W5-.Tv
nStartPos += fileAccessI.write(b,0,nRead); h;M3yTM-
//if(nThreadID == 1) IeTdN_8
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); jw>hk
} @d&H]5
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Utility.log("Thread " + nThreadID + " is over!"); # cFr
bDownOver = true; TFH&(_b
//nPos = fileAccessI.write (b,0,nRead); +5X DF
} <z0WLw0'z
catch(Exception e){e.printStackTrace ();} q7Es$zjX
} _vl}*/=Hc
} 4JMiyiW&
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//打印回应的头信息 iRw&49
public void logResponseHead(HttpURLConnection con) };katqzEg
{ x;#zs64f
for(int i=1;;i++) ;y1Q6eN
{ =8JB8ZFP
String header=con.getHeaderFieldKey(i); p2 ! FcFi
if(header!=null) O)#U ^
//responseHeaders.put(header,httpConnection.getHeaderField(header)); jRQ+2@n{E
Utility.log(header+" : "+con.getHeaderField(header)); mTf<
else 9M-K]0S(
break; %oof}=MxCL
} mP^SS
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} Pe ~c
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public void splitterStop() pJ^NA2
{ 6X_\Ve
bStop = true; PHra+NY#A
} AEg(m<t
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} ,YLF+^w-
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/* Xs$Ufi
**FileAccess.java j8$Zv%Ca%
*//文件访问(定位,写) @;^Y7po6u
package NetFox; cxP&^,~
import java.io.*; r4{<Z3*N
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w *!wQ,o
public class FileAccessI implements Serializable{ ALT^8c&K
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 )D@~|j:
RandomAccessFile oSavedFile; E^V|
long nPos; 6|;Uq'
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public FileAccessI() throws IOException !xK=#pa
{ eSy(~Y
this("",0); J"CJYuGW,
} <"tDAx
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public FileAccessI(String sName,long nPos) throws IOException {qpi?oY
{ .#w6%c@
oSavedFile = new RandomAccessFile(sName,"rw"); (Tvcq
this.nPos = nPos; 7+,vTsCd
oSavedFile.seek(nPos); -n))*.V
} c:hK$C)T
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public synchronized int write(byte[] b,int nStart,int nLen) a)s;dp}T%
{ 9;=dxWf
int n = -1; eph)=F$
try{ Zq"7,z7
oSavedFile.write(b,nStart,nLen); EU+cca|qS9
n = nLen; M0'v&g
} `DW2spd
catch(IOException e) B#l?IB~
{ = !2NU
e.printStackTrace (); QwWW!8
} &0
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return n; m,MSMw1p
} lxb zHlX
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/* tY/vL^mi
**SiteInfoBean.java +pmu2}E.3
*/ Oe!6){OG)
package NetFox; L'A)6^d@S
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public class SiteInfoBean { ^4>k%d
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private String sSiteURL; //Site's URL Tx>K:`oB
private String sFilePath; //Saved File's Path EtJ8^[u2J
private String sFileName; //Saved File's Name Ao.\
private int nSplitter; //Count of Splited Downloading File 963aW*r
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public SiteInfoBean() z~oDWANP
{//nSplitter的缺省值为5 4gBp8*2
//default value of nSplitter is 5 >)nS2bOE
this("","","",5); t;q7t!sC]
} TJ_=1Y@z
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) iz^qR={bW
{ |(R5e
sSiteURL= sURL; Zj9c9
sFilePath = sPath; C*kK)6v`
sFileName = sName; Kuw^qX"
this.nSplitter = nSpiltter; C"V%# K
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} 6z,Dyy]tl
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public String getSSiteURL() m@G i6
{ +Wn&