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/* H.]V-|U
**SiteFileFetch.java ,r~^<m */ g.Qn,l]X/p package NetFox; ~PQR_?1 import java.io.*; h lc!}{$%8 import java.net.*; c^'bf_~-W ^ H2TSaJ; X]2Ib'( public class SiteFileFetch extends Thread { !KJ X$? S
LeA,T -6uLww=w4 SiteInfoBean siteInfoBean = null; //文件信息Bean 7VZ ^J`3 long[] nStartPos; //开始位置 Z.Z31yF:f long[] nEndPos; //结束位置 U';)]vB$ FileSplitterFetch[] fileSplitterFetch; //子线程对象 [tSv{
long nFileLength; //文件长度 PPrvVGP
boolean bFirst = true; //是否第一次取文件 ewN|">WXQ boolean bStop = false; //停止标志 T"3LO[j+ File tmpFile; //文件下载的临时信息 bv(+$YR DataOutputStream output; //输出到文件的输出流 E&z^E2 FZ<6 kk4 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ib
'l:GM public SiteFileFetch(SiteInfoBean bean) throws IOException 2-qWR<E { v(JjvN21 siteInfoBean = bean; *y|w9rp //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 2?Ryk`2i) tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); U?|A3;,xh if(tmpFile.exists ()) !BrZTo { ;nbEV2Y< bFirst = false; e@vZg8Ie read_nPos(); |}e"6e% } uEr.LCAS else R\n@q_!`X { #P z'-lo nStartPos = new long[bean.getNSplitter()]; CE nEndPos = new long[bean.getNSplitter()]; `|"o\Bg< }
:jkPV%!~ fj(WHL >k@{NP2b C"`\[F`.k } 7^Us []N&,2O G@~e:v) public void run() y
c<%f { 0QquxYYw, //获得文件长度 h82y9($cZ //分割文件 &WAU[{4W //实例FileSplitterFetch s2QgR37s> //启动FileSplitterFetch线程 \8a014 //等待子线程返回 Wt!;Y,1s try{ PIFZ '6gn if(bFirst) 5oYeUy>N { @q]!C5
nFileLength = getFileSize(); Bs`='w%7 if(nFileLength == -1) oz:J.<j24Z { <?8cVLW}O System.err.println("File Length is not known!"); d/3&3>/ } \!uf*=d else if(nFileLength == -2) ~
W8
M3(^ { gGA5xkA System.err.println("File is not access!"); 6rG7/ } U:MZN[Cc[ else TQ/# { 23p.g5hJi for(int i=0;i<nStartPos.length;i++) 5HL>2
e[ { =yqg,w&Q nStartPos = (long)(i*(nFileLength/nStartPos.length)); jamai8 } }l]r- for(int i=0;i<nEndPos.length-1;i++) u|EJ)dT? { E6G;fPd= E nEndPos = nStartPos[i+1]; ]>sMu]biH } Sqmjf@o$> nEndPos[nEndPos.length-1] = nFileLength; Y%]g,mG } 93w$ck},?G } e*Nm[*@UW C`3fM05g ^( C,LVP< //启动子线程 98<^!mwF fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; c[OQo~m$ for(int i=0;i<nStartPos.length;i++) M5`m5qc3 { hdM?Uoo(4a fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *x2u siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 3+U2oI:I nStartPos,nEndPos,i); }gX4dv
B Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 5/m*Lc+r fileSplitterFetch.start(); Ai)Q(] } Mwj7*pxUh // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), {Y]3t9!\ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); N;m62N // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", _A]~`/0;` nEndPos = " + nFileLength); #LwDs,J :
// fileSplitterFetch[nPos.length-1].start(); B]7QOf" l`JKQk g8"{smP/ //等待子线程结束 rHjR 4q //int count = 0; T z+Y_ //是否结束while循环 MI8c>5? boolean breakWhile = false; _J3\e%ys =`gFwH< KHaYb5(a[ while(!bStop) c1f`?i}. { Uf[Gs/!NV write_nPos(); #?\|)y4i Utility.sleep(500); )MM(HS breakWhile = true; )@.ODW;` uA%F0oM )GC[xo4bg for(int i=0;i<nStartPos.length;i++) aO\@5i_r { dUceZmAl if(!fileSplitterFetch.bDownOver) Gh'{O/F4* { :J5CmU$ breakWhile = false; uk.x1*0x break; *;.:UR[i } `5~<) } U.WMu% if(breakWhile) k}{K7,DM break; DB] ]6 d
k|X&)xTJ xU9^8,6 //count++; _j_c& //if(count>4) &gm/@_ // siteStop(); 1;MUemnx` } qRZLv7X*j y=}a55:qE mO\=#Q> System.err.println("文件下载结束!"); jin?;v } r3Ih]|FK# catch(Exception e){e.printStackTrace ();} D4GXZX8K } D2#.qoP # =1F F2#zS ."v&?o
Ck] //获得文件长度 ou&7v<)x4 public long getFileSize() n ZS*"O#L { gi\UNT9x int nFileLength = -1; K9'AYFse try{ $4TawFf"nc URL url = new URL(siteInfoBean.getSSiteURL()); 2 BwpxV8 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); X@B,w_b httpConnection.setRequestProperty("User-Agent","NetFox"); @ j4~`~8 eJ$ {`&J /lvH p
int responseCode=httpConnection.getResponseCode(); aw0xi,Jz if(responseCode>=400) akA C^:F { *:,7
A9LY processErrorCode(responseCode); s|8_R; return -2; //-2 represent access is error x "PMi[4 } &nF7CCF C
F< d4-cZw}+ String sHeader; _$4vk /E6Tt DfP
vi1 for(int i=1;;i++) +f?xVW<h { 3gmu-tv //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ps?B;P //Utility.log(in.readLine()); .gHL(*1P sHeader=httpConnection.getHeaderFieldKey(i); ,b8B)VZ? if(sHeader!=null) b;sjw5cm_ { 1hgmlY` if(sHeader.equals("Content-Length")) UbV} ! { Bbx.RL.V nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); (z<&PP break; #bLeK$ } [kq+a]q } uH!;4@uI else ;;- I<TL break; 0bk094 } !ly]{DTmm } r`/tb^ catch(IOException e){e.printStackTrace ();} =u`^QE catch(Exception e){e.printStackTrace ();} K29KS)~;W Ib8xvzR6I& g8w5X!Z
Utility.log(nFileLength); BI6o@d;=4 ?en%m|}0 <:BhV82l return nFileLength; A@"CrVE } Lpdp'9>I /F 1mYq~ }mw31=2bD //保存下载信息(文件指针位置) 3AD^B\<gB private void write_nPos() X\1'd,V { i'9 try{ jW+L0RkX output = new DataOutputStream(new FileOutputStream(tmpFile)); "^ cn9AG{ output.writeInt(nStartPos.length); j^~WAWbFh for(int i=0;i<nStartPos.length;i++) . RNQlh3 { SQbnn" // output.writeLong(nPos); yN~: 3 output.writeLong(fileSplitterFetch.nStartPos); Jk7[}Jc$ output.writeLong(fileSplitterFetch.nEndPos); vg1p{^N! } E8Wgm
8 output.close(); KArnNmJ9 } eESJk14 catch(IOException e){e.printStackTrace ();} X/nb7_M catch(Exception e){e.printStackTrace ();} 4o2C=?@( } b-+iL KdOy3O_5N q-}J0vu\K //读取保存的下载信息(文件指针位置) hQgi--Msw' private void read_nPos() BY$%gIB6> { R('44v5JQp try{ ~Hs a6F&F DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ~z!U/QR2 int nCount = input.readInt(); NLC}XL nStartPos = new long[nCount]; E$rn^keM nEndPos = new long[nCount]; rf8`|9h"7 for(int i=0;i<nStartPos.length;i++) "sRR:wzQu { {E`f(9r: nStartPos = input.readLong(); A:ef}OCL nEndPos = input.readLong(); P Z;O
pp } MqI!i> input.close(); S-:l
60. } T;}pMRd% catch(IOException e){e.printStackTrace ();} |S:St HZm catch(Exception e){e.printStackTrace ();} 0BIH.ZV# } kf$0}T` @$;"nVZ4v M(S:&GOU private void processErrorCode(int nErrorCode) ]#[R^t { mY3x
(#I System.err.println("Error Code : " + nErrorCode); m`-{ V<(M } d7tH~9GX8 H6*d#! C
sn"sf //停止文件下载 i3>7R'q> public void siteStop() Zl.}J,0F { *B`wQhB% bStop = true; [3rvRJ. for(int i=0;i<nStartPos.length;i++) ,y?0Iwf fileSplitterFetch.splitterStop(); (3"V5r`*; #G^?4Za r/fLm8+ } [HK[{M=v= } dGcG7*EX //负责部分文件的抓取 (6fh[eK86 **FileSplitterFetch.java xq.,7#3 */ BxO8oKe package NetFox; i%0Ml:Y y#^d8
}+ 4S@^ym import java.io.*; X% S?o import java.net.*; (~N&ov Yt7R[| a!P?RbW public class FileSplitterFetch extends Thread { <`a!%_LC
[ Bi)1* Fmk,
"qs String sURL; //File URL }ruBbeQ long nStartPos; //File Snippet Start Position x2[A(O= long nEndPos; //File Snippet End Position B9n$8QS int nThreadID; //Thread's ID IiIF4 pQ, boolean bDownOver = false; //Downing is over ~(%nnG6x boolean bStop = false; //Stop identical aDTNr/I FileAccessI fileAccessI = null; //File Access interface 3xh~xE d?*=<w!A 'ac %]}`- public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException M"#xjP. { 5R/!e`(m this.sURL = sURL; k 0z2)3L this.nStartPos = nStart; x(&o=Pu this.nEndPos = nEnd; ;2-,Xzz8 nThreadID = id; Q'&oSPXSDd fileAccessI = new FileAccessI(sName,nStartPos);//定位 Qhsh{muw( } Y:oL 4E}/{1 9#iu#?*B public void run() |28z4 . {
=h\,-8 while(nStartPos < nEndPos && !bStop) ;dNKe.`Dg { &hEtVkK 7g cr$&+e ]4yWcnf try{ B{lBUv(B URL url = new URL(sURL); 'q8T*|/ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); uMtq4. httpConnection.setRequestProperty("User-Agent","NetFox"); $3|++? String sProperty = "bytes="+nStartPos+"-"; A$Mmnu% httpConnection.setRequestProperty("RANGE",sProperty); 2}[)y\`t3 Utility.log(sProperty); vZmM=hW ~ U|={LU ogH{ InputStream input = httpConnection.getInputStream(); Lk6UT)C //logResponseHead(httpConnection); f3]Z22Yq I1S*=^Z_U DDyeNuK byte[] b = new byte[1024]; L\XnTL{ int nRead; /Zap'S/ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 9H$#c_zrq { X<m#:0iD nStartPos += fileAccessI.write(b,0,nRead); [*Nuw_l //if(nThreadID == 1) VChNDHiH // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); +;tXk
} U@!e&QPn +LCpE$H F?? })YX Utility.log("Thread " + nThreadID + " is over!"); o
nt8q8 bDownOver = true; <<W{nSm# //nPos = fileAccessI.write (b,0,nRead); D$d8u=S } +6-c<m| catch(Exception e){e.printStackTrace ();} nxkbI:+t } H[UV]qO, } -uXf?sTV D.9qxM"Z> W~z
2Q
so //打印回应的头信息 +hI:5(_ public void logResponseHead(HttpURLConnection con) Va"Q1 *" { fgK1+sW for(int i=1;;i++) +]
>o@ { Tz[ck'k String header=con.getHeaderFieldKey(i); [QEV6S] if(header!=null) \wEHYz //responseHeaders.put(header,httpConnection.getHeaderField(header)); c"Ddw'?e Utility.log(header+" : "+con.getHeaderField(header)); $n\{6Rwb else OOn{Wp break; ov*?[Y7|~ } U}<5%"!; } tAO,s ZW U1}-]^\ a,i
k=g public void splitterStop() mZQW>A]iE { jT>G8}h bStop = true; >7i&(6L } $(/=Wn
_GS_R%b +e}v)N } 7yM=$"'d ~(OG3`W! CT,P Q /* Yl4XgjG **FileAccess.java Is1P,`*! *//文件访问(定位,写) ^)oBa=jL4 package NetFox; viB'ul7o import java.io.*; ix2V?\ `Y>'*4a\ m:&go2Y public class FileAccessI implements Serializable{ h|qTMwPr R8|H*5T?+ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 @yp#k> RandomAccessFile oSavedFile; L/\s~*:M long nPos; ])F*)U *?bOH5$@Nw >G7dw1; public FileAccessI() throws IOException @+Ch2Lod { .aS`l~6 this("",0); KUJCkwQ } mq
0 d ea !\|_,pSB LCBP9Rftvd public FileAccessI(String sName,long nPos) throws IOException U9"g;t+/ { FM$$0}X oSavedFile = new RandomAccessFile(sName,"rw"); jN))|eD0x this.nPos = nPos; {txW>rZX oSavedFile.seek(nPos); kjAARW } &:Q^j: t5O '7x ?APzb4f^W public synchronized int write(byte[] b,int nStart,int nLen) FZL"[3 { DO*rVs3'p[ int n = -1; M3q%(!2 try{ kU:ge oSavedFile.write(b,nStart,nLen); tofX.oi+C$ n = nLen; 4eVQO%&2 } [B~*88T catch(IOException e) de7
\~$ { +4L]Z;k e.printStackTrace (); #aI(fQZe } m\zCHX#n xER-TT#S |"]#jx*8KC return n; {Kh^)oYdd } Fnqj^5 TAL,(&[s ;|qbz]t2( } ~jz!jF~I gXJtk; v']Tusmg /* Ei>.eXUD5 **SiteInfoBean.java 1S[4@rZ */ U:r^4,Mz* package NetFox; r+TvC{ '=AqC,\# GJs{t1
E public class SiteInfoBean { ._%8H n4XEyCrD af@R\"N9c private String sSiteURL; //Site's URL g)dKXsy(F private String sFilePath; //Saved File's Path g)!d03Qoy private String sFileName; //Saved File's Name 6;C2^J @ private int nSplitter; //Count of Splited Downloading File / jLb{Ky 8u%rh[g' !w1acmo<_ public SiteInfoBean() xiv8q/ {//nSplitter的缺省值为5 -,186ZVZ //default value of nSplitter is 5 &?@gCVNO, this("","","",5); y$Fk0s*> } Gq=tR `. Prc( {K N7Y"AI public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter)
bV$g]->4e { 5Lm-KohT' sSiteURL= sURL; lb{X 6_. sFilePath = sPath; &( ZEs c sFileName = sName; QsX`IYk this.nSplitter = nSpiltter; '2qbIYanh )Vz=:.D _BEDQb{"| } I)\{?LdHR w1EB>!<;tj }0Q
T5 public String getSSiteURL() 9=J 3T66U { }S"qU]>8a return sSiteURL; hbe";( } _WGWU7h vL#I+_ 2 @.,Mn# public void setSSiteURL(String value) oj=%< a { 2Akh/pb sSiteURL = value; ,Yn$X } >Qqxn*O !'C8sNs SB|Cr:wM public String getSFilePath() !
o?E. { 4d_Az'7`4 return sFilePath; Sim$:5P } R2==<"gq
dy ~M5,zn ;Kh[6{ W public void setSFilePath(String value) >}bkX
6c5 { |['SiO$) sFilePath = value; Spw^h=o } DoNN;^H HJ!!" 2eRv{_ public String getSFileName() 6>3zD)tG { de9e7.(2 return sFileName; zjTCq; G } \maj5VlJ x6Tpt^N} 2uT@jfj:r public void setSFileName(String value) 9e7):ZupO { KGf@d*ZOMz sFileName = value; k$.l^H u } {z9,CwJan? qYPgn_ -UWyBM3c@ public int getNSplitter() 7:zoF],s { = Qn8Y`U return nSplitter; iOk`_LG# } 4QE")Ge O))j xouBBb= public void setNSplitter(int nCount) b)>l7nOc { <O41M\, nSplitter = nCount; QO>)ug+ } _7R6%^ } /IG3>|R f7a"}.D$ [U$`nnp /* 3t5WwrNh **Utility.java e
+jp,>(v */ RDeI l& package NetFox; ~iIFe+6 K#N5S]2yb ZftucD|ZY/ public class Utility { 8/}S/$ Sq5}v]k@& 29W`L2L public Utility() *CV I@:Q9 { Snq0OxS[v -aDBdZ;y a~k*Gd( } l xP!WP {M23a
_t\ //线程睡眠 ]>0$l _V public static void sleep(int nSecond) ;p"#ZS7 { <^+&A7Q-_ try{ VoyRB2t Thread.sleep(nSecond); M2A3]wd2a } oMxpdG3y- catch(Exception e) &!*p>Ns)e { Va/}|&9 e.printStackTrace (); C@MJn)$4 } D7v.Xq| } L(/wsw~y*
;?gR ,AKZ //日志 r3YfY\ public static void log(String sMsg) '<wZe.Q! { kqCUr|M.P System.err.println(sMsg); m.U&O=]5 } V^\b"1X7N ?aZ\Dg{ <2\QY public static void log(int sMsg) 2~)q080jh { _2<k,Dl;RY System.err.println(sMsg); P!/:yWd } Iy2AJ|d. } I^QB`%v5 QjsN7h&% p S!N<;OWr /* ks8x xY **TestMethod.java F '55BY*! */ 7D4I>N'T package NetFox; U6M&7l8 )7F$:*e s=XqI@ public class TestMethod { mTa^At" V/8yW3]Xy w.Kp[ public TestMethod() w'Jo).OW~ { ///xx/weblogic60b2_win.exe ZQ~EaI9R try{ =YR+`[bfI SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); EkP(]F //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); &^ =Y76 SiteFileFetch fileFetch = new SiteFileFetch(bean); P'k`H fileFetch.start(); %U$%x } ! ?m8UE catch(Exception e){e.printStackTrace ();} 4hV~
ir ulXe;2 KkZ o|\V } N4,!b_1 WtbOm YifTC-Q; public static void main(String[] args) cs)z! { p B79#4 new TestMethod(); I\VC2U
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