/* g/WDAO?d
**SiteFileFetch.java .:4*HB
*/ Z\]LG4N?
package NetFox; 6xY6EC
import java.io.*; }eI9me@Aa
import java.net.*; mKyF<1,m
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public class SiteFileFetch extends Thread { M= |is*t
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SiteInfoBean siteInfoBean = null; //文件信息Bean B*E"yB\NV
long[] nStartPos; //开始位置 I[gPW7&S@
long[] nEndPos; //结束位置 O*lIZ,!n
FileSplitterFetch[] fileSplitterFetch; //子线程对象 H|,d`@U
long nFileLength; //文件长度 68w~I7D>
boolean bFirst = true; //是否第一次取文件 Z-pZyDz
boolean bStop = false; //停止标志 mey -Bn
File tmpFile; //文件下载的临时信息 YXmy-o>
DataOutputStream output; //输出到文件的输出流 ttHRc!
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 1HqN`])l/j
public SiteFileFetch(SiteInfoBean bean) throws IOException t/%[U,m
{ tUW^dGo.
siteInfoBean = bean; 6i~<,;Cn
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); UUM:*X
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ydRS\l
if(tmpFile.exists ()) p&0 G
{ .wTb/x
bFirst = false; aIr"!. 4
read_nPos(); Sn
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} 1{RA\CF
else !>wu7u-
{ a+CJJ3T-
nStartPos = new long[bean.getNSplitter()]; ??|,wIRz
nEndPos = new long[bean.getNSplitter()]; A[`c+&
} ~(NFjCUY?
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} =Lb(N61
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public void run() R<hsG%BS(D
{ O*N:.|dUw
//获得文件长度 1W-kZ(e
//分割文件 :/Z1$xS
//实例FileSplitterFetch 0B2f[A
//启动FileSplitterFetch线程 foY]RkW9
//等待子线程返回 <VQ@I
try{ > PL}7f&:
if(bFirst) M1k_ldP
{ V$iA3)7W%
nFileLength = getFileSize(); /,j'Vr\"
if(nFileLength == -1) 3j[<nBsn.
{ /qq*"R
System.err.println("File Length is not known!"); |%rRALIY
} KG96;l@'(
else if(nFileLength == -2) M\Wg|gpy
{ V`i (vC(
System.err.println("File is not access!"); 7fd,I% v
} 9"L!A,&'
else o4j!:CI
{ L$ ^ew0C
for(int i=0;i<nStartPos.length;i++) !c0x^,iE
{ .<YfnW5/K
nStartPos = (long)(i*(nFileLength/nStartPos.length)); sYSq >M
} gdh|X[d
for(int i=0;i<nEndPos.length-1;i++) Cv&>:k0V
{ T
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nEndPos = nStartPos[i+1]; :RYYjmG5;
} U+(qfa5(
nEndPos[nEndPos.length-1] = nFileLength; &N3a`Ua
} y1Wb/ d
} }s#4m
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//启动子线程 P.=Dd"La
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; F4~O-g.<
for(int i=0;i<nStartPos.length;i++) h CV(O2jL
{ j xq89x
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), !wKNYe
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), jd"YaZOQ
nStartPos,nEndPos,i); :;LaV
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); >m=XqtP
fileSplitterFetch.start(); v0;dk(
} ]C|xo.=?]
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .Rb1%1bdc
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); N>g6KgX{K
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ;qUd]c9oi
nEndPos = " + nFileLength); 0&Iu+hv
// fileSplitterFetch[nPos.length-1].start(); bHTTxZ-%
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//等待子线程结束 NID2$ p
//int count = 0; BHNJH
//是否结束while循环 {n<1uh9~$8
boolean breakWhile = false; UD5hk
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while(!bStop) 6pZ/C<Y|W
{ 6$csFW3R
write_nPos(); O\@0o|NM
Utility.sleep(500); b=L|GV@$
breakWhile = true; n^|7ycB'
}Py Z{yS
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for(int i=0;i<nStartPos.length;i++) ?fpI,WFu
{ O31.\ZR2
if(!fileSplitterFetch.bDownOver) |+<o(Q(
{ [W dxMU
breakWhile = false; k4^!"~<+0
break; S6_dmTV*
} 0nR_I^
} w'mn O'%
if(breakWhile) wqX!7rD/g)
break; -.Z;n1'^
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//count++; u1Wixjd|
//if(count>4) G?:5L0g
// siteStop(); >k~3W> D
} xR&Le/3+
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System.err.println("文件下载结束!"); -t125)6 I
} 99b"WH^3$y
catch(Exception e){e.printStackTrace ();} 1ZWr@,\L
} :ee'|c
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//获得文件长度 Dd)L~`k{)
public long getFileSize() o4aFgal1
{ O tR
int nFileLength = -1; T{F
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try{ U-q:Y-h
URL url = new URL(siteInfoBean.getSSiteURL()); 5j5}c`:
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Wr4Ob*2iD
httpConnection.setRequestProperty("User-Agent","NetFox"); 8J2UUVA`1
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int responseCode=httpConnection.getResponseCode(); &Z7 NF|
if(responseCode>=400) rp!{QG
{ l<s6Uu"
processErrorCode(responseCode); <VT|R~
return -2; //-2 represent access is error okbW. ~
} (
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String sHeader; QnIF{TS=
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for(int i=1;;i++) zf[KZ\6H
{ ]%h|ox0
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 73+)> "x>
//Utility.log(in.readLine()); r}#,@<
sHeader=httpConnection.getHeaderFieldKey(i); qu/b:P
if(sHeader!=null) e:n3@T,R
{ U%tpNWB
if(sHeader.equals("Content-Length")) @$o^(my
{ ygqWy1C
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); XhJYs q]]J
break; .:SY:v r
} K5\;'.9M
} /)XN^Jwa;m
else n%ZOR1u)k#
break;
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} @t3I}mc
} )'$'?Fn
catch(IOException e){e.printStackTrace ();} )"Dl,Fig:/
catch(Exception e){e.printStackTrace ();} q_h/zPuH'
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Utility.log(nFileLength); JP6+h>ft
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return nFileLength; -Dr)+Y
} OZ Hfd7K4A
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//保存下载信息(文件指针位置) 1&utf0TX6q
private void write_nPos() OUtMel_
{ ~s)
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try{ 5_Oxl6#
output = new DataOutputStream(new FileOutputStream(tmpFile)); p4wx&VLi
output.writeInt(nStartPos.length); w(!COu
for(int i=0;i<nStartPos.length;i++) *o#P)H
{ Xm~N Bt
// output.writeLong(nPos); |OO2>(Fj
output.writeLong(fileSplitterFetch.nStartPos); K,f-
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output.writeLong(fileSplitterFetch.nEndPos); VNxhv!w
} h`V#)Q
output.close(); i0{sE
} [?VkwFD0
catch(IOException e){e.printStackTrace ();} 7DWHADr
catch(Exception e){e.printStackTrace ();} M}N[> ,2'
} ::p(ViYG
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//读取保存的下载信息(文件指针位置) ^wb$wtL('
private void read_nPos() Q>l5:2lq
{ G"F:68
try{ &z;1Z
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); >~rytg] f
int nCount = input.readInt(); A=\:b^\
nStartPos = new long[nCount]; CdTE~O<)
nEndPos = new long[nCount]; &u9@FFBT8
for(int i=0;i<nStartPos.length;i++) Jm]P,jaLc
{ ,qK3
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nStartPos = input.readLong(); Qjd<%!]+\
nEndPos = input.readLong(); IF<<6.tz
} kZ<"hsh,Y'
input.close(); v|; }}ol
} g I@I.=y
catch(IOException e){e.printStackTrace ();} [?moS!
catch(Exception e){e.printStackTrace ();} Kb*X2#;*
} !)LVZfQ0
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private void processErrorCode(int nErrorCode) W$Op/
{ *dX
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System.err.println("Error Code : " + nErrorCode); g66SCr}
} U$=#yg2
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//停止文件下载 NrWgaPO)i
public void siteStop() #;F*rJ[XY
{ )o_Pnq9_
bStop = true; !ZzDSQ;
for(int i=0;i<nStartPos.length;i++) 9{XV=a v
fileSplitterFetch.splitterStop(); uN9J?j*ir
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} -=a,FDeR
} nn{PhyK
//负责部分文件的抓取 ^?-wov$
**FileSplitterFetch.java 4-~S"T8<u
*/ roHJ$~q?
package NetFox; i
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import java.io.*; "aJfW
import java.net.*; tIL ]JB
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public class FileSplitterFetch extends Thread { GfL:0
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String sURL; //File URL -~WDv[[
long nStartPos; //File Snippet Start Position J6RzN'j
long nEndPos; //File Snippet End Position ,^uQw/
int nThreadID; //Thread's ID 3&KRG}5
boolean bDownOver = false; //Downing is over Gq0`VHAn
boolean bStop = false; //Stop identical ]@hN&W(+ x
FileAccessI fileAccessI = null; //File Access interface b+e9Pi*\
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException {P!1VYs5
{ 4O:y
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this.sURL = sURL; @"O|[%7e
this.nStartPos = nStart; gfly?)V nF
this.nEndPos = nEnd; ] Wx?k7T
nThreadID = id; GVld]ioycG
fileAccessI = new FileAccessI(sName,nStartPos);//定位 agp7zw=N
} ],l\HHQ
} @4by<
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public void run() 2OsS+6,[x
{ w>TTu:
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while(nStartPos < nEndPos && !bStop) /SD(g@G,
{ r!y3VmJ'm
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try{ }}gtz-w
URL url = new URL(sURL); 4{CeV7
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 0Q!/A5z
httpConnection.setRequestProperty("User-Agent","NetFox"); uXo?
String sProperty = "bytes="+nStartPos+"-"; cN%@
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httpConnection.setRequestProperty("RANGE",sProperty); KK,
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Utility.log(sProperty); -xL^UcG0
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InputStream input = httpConnection.getInputStream(); F-%Hw
//logResponseHead(httpConnection); f:KZP;/[c
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byte[] b = new byte[1024]; (qDPGd*1
int nRead; k]9+/$
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) tx ,q=.(
{ rBZ0Fx$/[
nStartPos += fileAccessI.write(b,0,nRead); W}'l8z]
//if(nThreadID == 1) sny$[!)
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); U%rq(`;
} PM`iqn)@
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Utility.log("Thread " + nThreadID + " is over!"); aI_[h
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bDownOver = true; <7_s'UAL!
//nPos = fileAccessI.write (b,0,nRead); ,C0D|q4/!.
} Q)2i{\GPVn
catch(Exception e){e.printStackTrace ();} <HH\VG\H6
} dheobD
} e5#?@}?
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//打印回应的头信息 PC3?eS}
public void logResponseHead(HttpURLConnection con) 6 l7iX]
{ ]\ t20R{z
for(int i=1;;i++) g9@H4y6fe=
{ pch8A0JAl)
String header=con.getHeaderFieldKey(i); !p!^[/9"c
if(header!=null) pMd!Jl#(N
//responseHeaders.put(header,httpConnection.getHeaderField(header)); (Rh$0^)A
Utility.log(header+" : "+con.getHeaderField(header)); }h1y^fuGi
else A$70!5*
break; bMB*9<c~
} <RuLIu
} {'sp8:$a
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public void splitterStop() mwO9`AU;
{ ujS C
bStop = true; sq{=TB{
} WOi+y
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} :QIf0*.O
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/* 9D]bCi\
**FileAccess.java S4VM(~,o
*//文件访问(定位,写) l'7'G$v
package NetFox; uc aa;zj
import java.io.*; >~jl0!2z@
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public class FileAccessI implements Serializable{ l~mj>$
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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 U#:N/ts*(
RandomAccessFile oSavedFile; X 4\V4_
long nPos; >dXB)yl
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public FileAccessI() throws IOException o:`^1
{ %E[ $np>
this("",0); 8ib e#jlg
} |?
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public FileAccessI(String sName,long nPos) throws IOException Kx02 2rgDU
{ /0b7"Kr
oSavedFile = new RandomAccessFile(sName,"rw"); N
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this.nPos = nPos; ySHpN>U
oSavedFile.seek(nPos); ^O<@I
} Y>x3`f]
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go}
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public synchronized int write(byte[] b,int nStart,int nLen) 1BSn#Dnj
{ Q-J} :U
int n = -1; Q5]rc`}
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try{ m[ER~]L/C
oSavedFile.write(b,nStart,nLen); Tnas$=J
n = nLen; V`@/"Dj j
} Z%JAX>v&B
catch(IOException e) x>+sqFd\
{ =
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e.printStackTrace (); f9t+x+ Z
} I#;.;%u
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return n; 5b->pc
} %4})_h?j
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} lQxEiDIL
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/* *0m|`-
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**SiteInfoBean.java 3;88a!AA!
*/ P MI?PC[;
package NetFox; O"1HO[
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public class SiteInfoBean { 'sTc=*p/
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private String sSiteURL; //Site's URL Oj8D+sC{
private String sFilePath; //Saved File's Path jQ8
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private String sFileName; //Saved File's Name y5 X FJj
private int nSplitter; //Count of Splited Downloading File ^4xl4nbx
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public SiteInfoBean() OW#G{#.6R
{//nSplitter的缺省值为5 ";^_[n
//default value of nSplitter is 5 `|mV~F|
this("","","",5); c*i,z
} \eAV: qV
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) $01~G?:]`
{ 9*XT|B
sSiteURL= sURL; ilZQ/hOBH
sFilePath = sPath; J+wnrGoK
sFileName = sName; `l %,4qR
this.nSplitter = nSpiltter; {REGoe=W%
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ED);2*qP}
} A@-U#UvN
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public String getSSiteURL() =CO'LyG
{ j%}9tM6[
return sSiteURL; c4zGQoeH:
} olKM0K
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public void setSSiteURL(String value) /. H(&
{ OzR<jCOS
sSiteURL = value; 2`A[<