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**SiteFileFetch.java RjgJIVm(
*/ +?Cy8Ev?
package NetFox; H[OgnnM
import java.io.*; IoK/ 2Gp
import java.net.*; }a9G,@:k
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public class SiteFileFetch extends Thread { %yjD<2J;
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SiteInfoBean siteInfoBean = null; //文件信息Bean q{B?j%.o
long[] nStartPos; //开始位置 n|rKo<Y0
long[] nEndPos; //结束位置
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 bX:h"6{=R
long nFileLength; //文件长度 ;b1B*B
boolean bFirst = true; //是否第一次取文件 i`+bSg
boolean bStop = false; //停止标志 T,>L
File tmpFile; //文件下载的临时信息 5F
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DataOutputStream output; //输出到文件的输出流 lQ!OD&6
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) S ++~w9}
public SiteFileFetch(SiteInfoBean bean) throws IOException Yc_(g0NK
{ ?YS 3)
siteInfoBean = bean; SA=>9L,2
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); M3|G^q:l
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); dkCUU
if(tmpFile.exists ()) '6>*J
{ <LXx_{=:
bFirst = false; xh9$ZavB*
read_nPos(); v3XM-+Z4
} z,^~H
else p nI=
{ )78T+7Kq
nStartPos = new long[bean.getNSplitter()]; ^->S7[N?
nEndPos = new long[bean.getNSplitter()]; nu-&vX
} :E~rve'
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} t:vBVDkD
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public void run() !d!u{1Y&
{ XM`
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//获得文件长度 yzzJKucVU:
//分割文件 qnj'*]ysBC
//实例FileSplitterFetch |rZMcl/
//启动FileSplitterFetch线程 =EA:fq
//等待子线程返回 oo7}Hg>
try{ Yb/*2iWX
if(bFirst) 9`Fw}yAt
{ 9:VUtx#}2
nFileLength = getFileSize(); 8 p[n>qV9
if(nFileLength == -1) |}UkVLc_^
{
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System.err.println("File Length is not known!"); >-<iY4|[d
} V(DY!f_%
else if(nFileLength == -2) j4!O,.!T
{ {)!>e
System.err.println("File is not access!"); 1,bE[_
} ,#&7+e!]>P
else 5Lej_uqF
{ 51#OlvD
for(int i=0;i<nStartPos.length;i++) +)e|>
{ (?JdiY/
nStartPos = (long)(i*(nFileLength/nStartPos.length)); bDtb6hL
} fC*cqc~{@
for(int i=0;i<nEndPos.length-1;i++) -,p=;t#(
{ @v#P u_
nEndPos = nStartPos[i+1]; \i%mokfbc
} :Ez,GA k
nEndPos[nEndPos.length-1] = nFileLength; $#u'XyA
} NId.TaXh
} ?&~q^t?u
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//启动子线程 ]6)u$4X6$
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; x4H#8ZK!
for(int i=0;i<nStartPos.length;i++) [p`5$\e
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), tS]
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), y5m2u8+
nStartPos,nEndPos,i); l&qCgw
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _"yA1D0d_
fileSplitterFetch.start(); e}d(.H%l0
} uij^tN%
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), RLnL9)`W
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); !+^'Ej)z
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Y`bTf@EP>
nEndPos = " + nFileLength); sAL
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// fileSplitterFetch[nPos.length-1].start(); 31G0B_T
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//等待子线程结束 x}?<9(nE c
//int count = 0; Wx{E\ l
//是否结束while循环 ~:bdS 4w
boolean breakWhile = false; 'Uf?-t*LT@
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while(!bStop) sEdz`F
{ vb6EO[e%I
write_nPos(); F1L[3D^-
Utility.sleep(500); !!^z6jpvn
breakWhile = true; <dH@e
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for(int i=0;i<nStartPos.length;i++) d)YlD]I
{ 3 J04 $cD
if(!fileSplitterFetch.bDownOver) }:Z A)
{ 7D#y
breakWhile = false; iT4*~(p 3
break; vCaN [
} UGhEaKH~R
} [c
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if(breakWhile) H,X|-B
break; +ZOiL[rS
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//count++; qMNWw\k
//if(count>4) P)=.Du)
// siteStop(); #lP8/-s^
} ZLv/otf:|"
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System.err.println("文件下载结束!"); 2Kz+COP+
} xZ9:9/Vg
catch(Exception e){e.printStackTrace ();} n_e'n|T
} ?W'p&(;
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//获得文件长度 ,94<j,"
public long getFileSize() zzQWHg]/
{ Lqj
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int nFileLength = -1; U4pIRa)S
try{ !SQcV'
URL url = new URL(siteInfoBean.getSSiteURL()); 9RaO[j`
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); (G>[A}-
httpConnection.setRequestProperty("User-Agent","NetFox"); ;[sW\Ou
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int responseCode=httpConnection.getResponseCode(); a[O6xA%
if(responseCode>=400) LSJ?;Zg(=z
{ .gRj^pu
processErrorCode(responseCode); $RPW/Lyiq
return -2; //-2 represent access is error }~XWtWbd-
} 'jtC#:ePK
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String sHeader; f&^(f1WO
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for(int i=1;;i++) pE4a ~:
{ '-;[8:y.
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); e<L@QNX
//Utility.log(in.readLine()); 7^q~a(j
sHeader=httpConnection.getHeaderFieldKey(i); m|@H`=`d
if(sHeader!=null) 9Eyx Ob
{ L[G O6l
if(sHeader.equals("Content-Length")) ??rS h Mu
{ o%$.8)B9F
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 9)q3cjP{<
break; 5AYOM=O]t
} %a;#]d
} RdTM5ANT
else i--t
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break; ut{T:kT
} j9+$hu#a
} >gk_klLh
catch(IOException e){e.printStackTrace ();} Lx^ eaP5
catch(Exception e){e.printStackTrace ();} /U~|B.z@6
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Utility.log(nFileLength); j i"g)d6
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return nFileLength; P#,u9EIJ
} G 6sK3K
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//保存下载信息(文件指针位置) ggr
private void write_nPos() ;;Q^/rkC
{ )O]T}eI
try{ WSkGVQu
output = new DataOutputStream(new FileOutputStream(tmpFile)); =l,P'E
output.writeInt(nStartPos.length); 0B
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for(int i=0;i<nStartPos.length;i++) xt{'Be&Ya+
{ +L(amq;S
// output.writeLong(nPos); _'u]{X\k{J
output.writeLong(fileSplitterFetch.nStartPos); EdJL&*
output.writeLong(fileSplitterFetch.nEndPos); )D)5
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} ^QB[;g.O
output.close(); l>?c AB[
} p*Bty@CRi
catch(IOException e){e.printStackTrace ();} J3K=z
catch(Exception e){e.printStackTrace ();} 7|P
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} U@lc1#
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//读取保存的下载信息(文件指针位置) ^URCnJ67Se
private void read_nPos() mP(3[a_Q
{ @fL ^I&++
try{ Nk`UQ~g$
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Hd|l6/[xz
int nCount = input.readInt(); n/H
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nStartPos = new long[nCount]; 0J)s2&H
nEndPos = new long[nCount]; KhCP9(A=Qo
for(int i=0;i<nStartPos.length;i++) {|+Y;V`
{ (L_-!=e
nStartPos = input.readLong(); !d*[QD8
nEndPos = input.readLong(); IP~!E_e}\
} ^4y]7p
input.close(); =8kmFXo
} US6_5>/
catch(IOException e){e.printStackTrace ();} 092t6D}
catch(Exception e){e.printStackTrace ();} ;t`
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} EP;/[O
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private void processErrorCode(int nErrorCode) (JhX:1
{ N0U/u'J!g
System.err.println("Error Code : " + nErrorCode); X'9.fKp
} X|M!Nt0'
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//停止文件下载 DT1gy:?L
public void siteStop() [&Xp]:M'D
{ (}"D x3K
bStop = true; TQ
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for(int i=0;i<nStartPos.length;i++) 2EY"[xK|
fileSplitterFetch.splitterStop(); ?HZp@&
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} J3Mb]X)_}
} q>q:ZV
//负责部分文件的抓取 0bNvmZ$
**FileSplitterFetch.java bm588UQ
*/ +Qs]8*^?;
package NetFox; k_=SDm a
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import java.io.*; OI R5QH
import java.net.*; ]n ?x tI
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public class FileSplitterFetch extends Thread { 3JoY-
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String sURL; //File URL .{Y;6]9[
long nStartPos; //File Snippet Start Position kH!Z|Ps?R
long nEndPos; //File Snippet End Position ><%585
int nThreadID; //Thread's ID [;E%o^/^
boolean bDownOver = false; //Downing is over @0`A!5h?u
boolean bStop = false; //Stop identical TFVQfj$r
FileAccessI fileAccessI = null; //File Access interface ,N/@=As9$
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException vNv?trw
{
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this.sURL = sURL; -F[8ZiZ
this.nStartPos = nStart; 8$Q`wRt(%
this.nEndPos = nEnd; l=^A41L_
nThreadID = id; vccWe7rh
fileAccessI = new FileAccessI(sName,nStartPos);//定位 r^9l/H~$
} 4.6$m
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public void run() 1CtUf7 `/Q
{ gfk)`>E
while(nStartPos < nEndPos && !bStop) wAMg"ImJ
{ \lL[08G
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try{ Jx*cq;`Vee
URL url = new URL(sURL); J5@08bZm
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 77e*9/6@
httpConnection.setRequestProperty("User-Agent","NetFox"); ^df wWP
String sProperty = "bytes="+nStartPos+"-"; Z['.RF'`
httpConnection.setRequestProperty("RANGE",sProperty); +^I0>\
Utility.log(sProperty); GqFx^dY4*
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InputStream input = httpConnection.getInputStream(); CB7dr&>
//logResponseHead(httpConnection); =j]y?;7q
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byte[] b = new byte[1024]; nx9PNl@?V
int nRead; zVh yAf
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) _ %s#Cb
{ jiI=tg;
nStartPos += fileAccessI.write(b,0,nRead); # @\3{;{R
//if(nThreadID == 1) wcHk]mLM
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); %cNN<x8
} ;5a$OM
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Utility.log("Thread " + nThreadID + " is over!"); Pz]WT1J0
bDownOver = true; + a#&W}K
//nPos = fileAccessI.write (b,0,nRead); ;i{B,!#
} ,CE/o7.FG
catch(Exception e){e.printStackTrace ();} >Wg=
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} Y#U.9>h
} 9t! d.}
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//打印回应的头信息 G
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public void logResponseHead(HttpURLConnection con) #h!+b
{ c
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for(int i=1;;i++) |jsI-?%8J
{ ktu?-?#0,
String header=con.getHeaderFieldKey(i); kuY^o,u-1e
if(header!=null) YMGy-]!o
//responseHeaders.put(header,httpConnection.getHeaderField(header)); X<ex
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Utility.log(header+" : "+con.getHeaderField(header)); ;W|kc</R*
else UhB+c
break; ?7\V)$00(&
} ^0,}y]5p
} /%$Zm^8c
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public void splitterStop() 1nVQYqT_
{ 2g(_Kdj*{
bStop = true; qLR;:$]Q&8
} t]c<HDCK
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} a=S &r1s>
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