-
UID:2537
-
- 注册时间2006-05-09
- 最后登录2020-05-29
- 在线时间3小时
-
- 发帖8
- 搜Ta的帖子
- 精华
0
- 铜板1641
- 人品值95
- 贡献值0
- 交易币0
- 好评度8
- 信誉值0
- 金币0
-
访问TA的空间加好友用道具
- 发帖
- 8
- 铜板
- 1641
- 人品值
- 95
- 贡献值
- 0
- 交易币
- 0
- 好评度
- 8
- 信誉值
- 0
- 金币
- 0
- 所在楼道
|
/* N9PEn[t@ **SiteFileFetch.java Q\*zF,ek */ BvpUcICJ package NetFox; 0gJ{fcI import java.io.*; ua%j}%G( import java.net.*; |k/;1.b!9( -^$IjK-N <
_<?p& public class SiteFileFetch extends Thread { \|R\pS}4 k6|/ ik9C 7,R
~2ss5z SiteInfoBean siteInfoBean = null; //文件信息Bean na]
9-~4 long[] nStartPos; //开始位置 =O~Y6| long[] nEndPos; //结束位置 <e$%m(] FileSplitterFetch[] fileSplitterFetch; //子线程对象 7vB6IF long nFileLength; //文件长度 vF'Y; M boolean bFirst = true; //是否第一次取文件 -)!;45 boolean bStop = false; //停止标志 3\a VZx! File tmpFile; //文件下载的临时信息 .2*h!d)E DataOutputStream output; //输出到文件的输出流 7_ 5-gtD ^J&}C //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Ev1gzHd!i public SiteFileFetch(SiteInfoBean bean) throws IOException Zy^ wS1io { m/aA
q8 siteInfoBean = bean; )C0 y<:</ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); d'e\tO tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); oSkvTK$&i if(tmpFile.exists ()) 1 o\COnt { ~4`3p=$ bFirst = false; {[r}gS% read_nPos(); ZE6W"pbjU } g"X!&$& else O7zj8 { gq&jNj7V nStartPos = new long[bean.getNSplitter()]; }_9yemP nEndPos = new long[bean.getNSplitter()]; LOe l6Ui } )*9,H|2nS !+3nlG4cw Y?JB%%WWI a} :2lL% } D<Z]kR( pw=o}-P{ O`0\f8/.? public void run() OBnvY2)Ri { Md>9Daa~ //获得文件长度 XOPiwrg%p //分割文件 ]?0]K!7Ea //实例FileSplitterFetch 7G
3e //启动FileSplitterFetch线程 |:Lk lpdYe //等待子线程返回 r.v.y[u try{ 3F{R$M} if(bFirst) MZdj!(hO { 7J5Yzu)D nFileLength = getFileSize(); D]+@pKb if(nFileLength == -1) rVDOco+w { 2mfG:^^c System.err.println("File Length is not known!"); 6MelN^\[7 } Q`z2SYz> else if(nFileLength == -2) 9PJnKzQ4 { w9CX5Fg System.err.println("File is not access!"); xgZ<.r } [lE^0_+ else ]1|OQYG { a*!9RQ for(int i=0;i<nStartPos.length;i++) 9Q&]5|x { `/o| 1vv@_ nStartPos = (long)(i*(nFileLength/nStartPos.length)); %H=^U8WB } M8f[ ck for(int i=0;i<nEndPos.length-1;i++) TZa LB}4 { t7,** $ST nEndPos = nStartPos[i+1]; k~=P0"; } _ IlRZ} f nEndPos[nEndPos.length-1] = nFileLength; H.)J?3 } G PL^!_ } ^6PKSEba ->J5|c# *!`bC@E //启动子线程 FQ]5W |e fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; @4P_Yfn for(int i=0;i<nStartPos.length;i++) (FSa> { !1`f84d fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), P&AaD!Qn siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ])vqXjN6" nStartPos,nEndPos,i); )T'~F Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); @g1T??h fileSplitterFetch.start(); )wk9(|[o } =+"-8tz8FV // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,sltB3f siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); %m "9 =C
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", r9~I R nEndPos = " + nFileLength); t[\6/`YH // fileSplitterFetch[nPos.length-1].start(); rz5@E PH=O>a`a_O JgcMk]|' //等待子线程结束 c)SQ@B@q //int count = 0; z"V`8D //是否结束while循环 d@
tD0s boolean breakWhile = false; 68nPz".X UX)QdT45Mh uo7[T*<Q while(!bStop) "2`/mtMon { L+0O=zJF write_nPos(); 3IQ-2 X-- Utility.sleep(500); 9oVprd>%@ breakWhile = true; j]6YLM@5$ gflO0$i ]O&yy{yYK for(int i=0;i<nStartPos.length;i++) h BzZJ/jn { CjLiLB
if(!fileSplitterFetch.bDownOver) 6' 9zpe@` { {N@tJ,Fh{ breakWhile = false; D1cnf"y^ break; ~oeX0l>F } 6tup^Rlo;$ } n/+G^:~_ if(breakWhile) LEY k break; x^y&<tA -Vj112 fI aTE;Gy,W //count++; O,0j+1? //if(count>4) ]{= qdgJ // siteStop(); 2jyxP6t } &Pgk$e%> R5fZ}C7 sb</-']a System.err.println("文件下载结束!"); 3s_$. } |7b@w;q,D catch(Exception e){e.printStackTrace ();} !FeNx*31i } y@dTdR2Wc 9+:<RFJ b
R9iqRbn //获得文件长度 #
0/,teJk public long getFileSize() 8%^W<.Y { -p f9Wk int nFileLength = -1; u$+nl~p[& try{ NzbHg p URL url = new URL(siteInfoBean.getSSiteURL()); ?wMS[Kj HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection ();
u{|^5%) httpConnection.setRequestProperty("User-Agent","NetFox"); ?# )\SQ Ikgia:/-Z i/F].Sag int responseCode=httpConnection.getResponseCode(); &5R-bYGW if(responseCode>=400) l1]'3]P( { n;~6'fxe processErrorCode(responseCode); ~{[,0,lWU return -2; //-2 represent access is error Z+Ppd=||, } qz|xow/ns@ qj,^"rp1: sKDL=c;?j String sHeader; It5n;,n zc!q a"4yM }1Pv6L(o) for(int i=1;;i++) jW]Fx:mQi { iayxN5, //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); }K9Ji]tOK: //Utility.log(in.readLine()); ybpU?n sHeader=httpConnection.getHeaderFieldKey(i); q ?m<9` if(sHeader!=null) GD#W=O { `qa>6`\ if(sHeader.equals("Content-Length")) /
2h6 { L$= a,$ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); l# |M.V6G break; &F|Wk,y } S?#'Y*h } tMr$N[@r else gBo~NLrf break; ^Rmrre`uU } N1X;&qZDd } IdciGS6t catch(IOException e){e.printStackTrace ();} eLk:">kj catch(Exception e){e.printStackTrace ();} }~! D]/B D?r% Y $TavvO%# Utility.log(nFileLength); \D}$foHg 4
zipgw A|BN>?.t return nFileLength; s7:w>,v/ } ]VK9d;0D o^<W3Z
fG|+! //保存下载信息(文件指针位置) 10$:^ private void write_nPos() @wa<nYd { I7jIA>ZZi try{ 'jBtBFzP- output = new DataOutputStream(new FileOutputStream(tmpFile)); 1:Xg&4s output.writeInt(nStartPos.length); !4mAZF
b for(int i=0;i<nStartPos.length;i++) bE2{^5iG { A9M/n^61 // output.writeLong(nPos); GlaZZ, output.writeLong(fileSplitterFetch.nStartPos); #oEq)Vq>g| output.writeLong(fileSplitterFetch.nEndPos); bk4G+wGw } ~)]n67Or~ output.close(); @v n% } _Uup*#m catch(IOException e){e.printStackTrace ();} >I9|N}I
catch(Exception e){e.printStackTrace ();} 2Q[q)u } `}*jjnr" )-S;j)(+ No(S#,vJ; //读取保存的下载信息(文件指针位置) 5
OF*PBZ private void read_nPos() u&$1XZ!es { B \>W try{ G>W:3y DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Q?-u J1J int nCount = input.readInt(); |~YhN'OJ nStartPos = new long[nCount]; 30L/-+r1 nEndPos = new long[nCount]; Tg6nb7@P for(int i=0;i<nStartPos.length;i++) zjwo"6c> { 8'Q1'yc nStartPos = input.readLong(); -/J2;AkGH nEndPos = input.readLong(); LQ4F/[1} } rOXh?r input.close(); bv'Z~@<c } sys;Rz2 catch(IOException e){e.printStackTrace ();} mNr<=Z%b catch(Exception e){e.printStackTrace ();} /n#t.XJY* } K]dX5vJw' ceNJXK `/eh private void processErrorCode(int nErrorCode) StM)lVeF {
pqxBu System.err.println("Error Code : " + nErrorCode); 3G-f+HN^E } }t5pz[zl }#9 |au` &3'zG) //停止文件下载 r;OE6}L> public void siteStop() aKkY) { YX19QG% bStop = true; \DRYqLT` for(int i=0;i<nStartPos.length;i++) F`
]s fileSplitterFetch.splitterStop(); ~aRcA|` 7\JA8mm ~n!7 ?4%U } C~:!WRCz } iVb#X# //负责部分文件的抓取 )lB*]
n`Z] **FileSplitterFetch.java _JXb|FIp */ 9/LJtM package NetFox; B<?fD >?0 f>I%\ D_Cd^;b import java.io.*; /S)&d N` import java.net.*; i@`T_&6l zd#/zUPI K9f7,/ public class FileSplitterFetch extends Thread { %TRH,-@3h n"Q fW~ U ?kM53zbT# String sURL; //File URL `PvGfmYOl long nStartPos; //File Snippet Start Position Wy,Tf*[ long nEndPos; //File Snippet End Position }8&L?B;90 int nThreadID; //Thread's ID t!}?nw%$ boolean bDownOver = false; //Downing is over >,%7bq=T! boolean bStop = false; //Stop identical .%N*g[J FileAccessI fileAccessI = null; //File Access interface ppo\cy; oi}\;TG `(?x@Y>.Ht public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException .=-K7.X.) { @X*r5hjc this.sURL = sURL; F6\r"63 this.nStartPos = nStart; 'aW<C> this.nEndPos = nEnd; E>6:59+ nThreadID = id; 'Z(4Wuwb fileAccessI = new FileAccessI(sName,nStartPos);//定位 EL-1o02- } IEJp!P,E 7U {g'< [!E~pW%|n public void run() D^W?~7e^r { I@9k+JB while(nStartPos < nEndPos && !bStop) 6sp?'GO`~ { _"#ucM=B:- )x*pkE**c Gm1vVHAxv try{ )0NE_AZ? URL url = new URL(sURL); /4n :!6rt HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); DV!) n 6 httpConnection.setRequestProperty("User-Agent","NetFox"); 7A[`%.!F6 String sProperty = "bytes="+nStartPos+"-"; &-1;3+#w httpConnection.setRequestProperty("RANGE",sProperty); _jCjq Utility.log(sProperty); +A,t9 3:k L(!mm ^atBf![ InputStream input = httpConnection.getInputStream(); :X;AmLf`2u //logResponseHead(httpConnection); /IN/SZx ^ 04|tda RW.
>;|m byte[] b = new byte[1024]; p%6j2;D int nRead; t'0dyQ%u while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) `[5QouPV { sj?7}(s nStartPos += fileAccessI.write(b,0,nRead); +#! !
'XP //if(nThreadID == 1) 5=--+8[ bV // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); N2^B } ;{Kx$Yt+ 0jN?5j &u/T,jy` Utility.log("Thread " + nThreadID + " is over!"); zWh[U'6 bDownOver = true; ]o]*&[C //nPos = fileAccessI.write (b,0,nRead); qSWnv`hL } =a.avOZ catch(Exception e){e.printStackTrace ();} ^J=l] l } xPi/nWl`| } `?ijKZ}y5 \kGi5G] @n##.th //打印回应的头信息 /hMD
Me public void logResponseHead(HttpURLConnection con) s) vHLf4 T { 6M`N| % for(int i=1;;i++) Q+\?gU] { 8Dq;QH} String header=con.getHeaderFieldKey(i); 0FV?By if(header!=null) LGm>x //responseHeaders.put(header,httpConnection.getHeaderField(header)); w&7-:."1i Utility.log(header+" : "+con.getHeaderField(header)); H `V3oS~} else (fjAsbT break; ~e<v<92Xu } a9GLFA8Vq } Vnv9<=R eiaLzI,O {rG`Upp public void splitterStop() [J|)DUjt { @{Q[M3l bStop = true; u9*}@{, } v@0lTl_ 0/."R; ;_lEu" - } x_oL~~@ t4H@ZvAH0 0}UJP /* {<HL}m@kQ **FileAccess.java ;$y(Tvd; *//文件访问(定位,写) lFNf/j^Z package NetFox; heliL/ import java.io.*; >k?/'R /IS
j0"/$ #Pulbk8 public class FileAccessI implements Serializable{ @]#0jiS vRLkz4z //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 @JWoF^U RandomAccessFile oSavedFile; aNpeePF)z long nPos; [*j
C 6N&S3<c4JO $GyO+xF public FileAccessI() throws IOException "bRg_]\q6 { >Udb*76
D this("",0); ~R]E=/ m| } {Tp0#fi DG x9 \8^ kN4nRW9z public FileAccessI(String sName,long nPos) throws IOException n7"e 79 { 6ZBg/_m oSavedFile = new RandomAccessFile(sName,"rw"); av( d0E}}b this.nPos = nPos; D@yg)$;z oSavedFile.seek(nPos); yWACIaj } XB)e;R gOI#$-L *=1;HN3 public synchronized int write(byte[] b,int nStart,int nLen) &t+ { |#x;}_>7 int n = -1; .[hQ#3)W try{ %:n1S]Vr oSavedFile.write(b,nStart,nLen); 6rEt!v #K[ n = nLen; {6v|d{V+e } /vl]Oa&U catch(IOException e) !<!sB) { )""i"/Mn e.printStackTrace (); OYJy;u3" } }ZEh^zdz8 q!k
F AF1";duA return n; <R7*00 } `)F lb|da w|x=^ z
I`'n%n= } (XJehdB0 j=)Cyg3_% z0V d(QL /* ,9q=2V[GP **SiteInfoBean.java h'<}N */ F_!6C-z package NetFox; n37C"qJ/i ]<q{0. $V~r*#$. public class SiteInfoBean { GA{>=Q_~ $EbxV"b+ 2#LcL
private String sSiteURL; //Site's URL J"8bRp=/| private String sFilePath; //Saved File's Path e|
(jv<~r private String sFileName; //Saved File's Name yUQ;tTI private int nSplitter; //Count of Splited Downloading File GBvB0kC) c VuwBnQ.2k j?1\E9&4-Q public SiteInfoBean() {nT !|S)$ {//nSplitter的缺省值为5 $Trkow%F] //default value of nSplitter is 5 =1lKcA[z this("","","",5); g/so3F%v
. } D5)qmu 6g!#"=ls; R:B-4 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) t'4hWNR'
{ )_b#c+ sSiteURL= sURL; &-+qB
>SK> sFilePath = sPath; sMli! u sFileName = sName; #$%9XD3 this.nSplitter = nSpiltter; .9> er YL&$cT]1 it\{#rb=4 } a=k+:=%y XZuJ<]}X, a=gTGG"9 public String getSSiteURL() &Z5$
5,[ { 0G9@A8LU return sSiteURL; Giz9jzF\ } *#Hi W) ]c+qD,wqt> <"/Y`/ public void setSSiteURL(String value) E8=.TM]L { %p"x|e sSiteURL = value; '/SMqmi } SxC$EQgL $I-$X? YWM$% public String getSFilePath() GC H= X { Mq42^m:qe return sFilePath; d6<,R;) } u.0Z)j}N {g l-tRC3 @.T' public void setSFilePath(String value) J$&!Y[0 { ]1%H.pF sFilePath = value; }f^r@3Cb3 } eGvHU ;@ 9#/z[! <!K2xb-d^ public String getSFileName() gPe*M =iF { SS
O$.rp return sFileName; k\Oy\z@ } 5wRDH1z@{ >9F,=63A d#I'9O0& public void setSFileName(String value)
k$}XZ,Q { O?D*<rwD sFileName = value; ,Zzh. z::D } %fh
,e5(LT =9y'6|>l 2#@S6zc public int getNSplitter() )& %X
AW{ { [f.[C5f%"' return nSplitter; (p68Qe%OuG } Lh"Je-x<< @= 6}w_ 3w
?)H public void setNSplitter(int nCount) c>!>D7:7 { >t'/(y nSplitter = nCount; KI-E=<zt } [xk1}D } @8|- C W )q^@6[d rYeFYPS /* rcq(p(! **Utility.java g$?B!!qT */ s41<e" package NetFox; wX#=l?,K 8~EDmg[ /%$'N$@f public class Utility { Cq u/(= vC$[Zm QZ"Lh public Utility() j3P)cz-0/L { er,R}v Sq UoXNw '_g8fz
3 } W&}R7a@:<~ MT$OjH'Q` //线程睡眠 ^]Lr_k public static void sleep(int nSecond) 7}%3Aw6]S { ^g~Asz5] try{ &y mfA{s Thread.sleep(nSecond); t}qoIxy) } Io5-[d catch(Exception e) G|'DAj% { '+Gt+Gq+ e.printStackTrace (); Y@TZReb } +0.$w } bh6Mh<+ g/mVd;#o //日志 Up*p*(d3 public static void log(String sMsg) hrNri$ { (".`#909 System.err.println(sMsg); /+"BU-aQk } ]b.@i&M
IpoZ6DB$ |Ag~k? QC public static void log(int sMsg) 7sC$hm] { O=MO M System.err.println(sMsg); ]3NH[&+ } "|]'\4UdzQ } 2!-ZNd:(+ LP7t*}PK C=h$8Q /* 8PDt 7
\ **TestMethod.java 9&g//JlD */ p` B48TW package NetFox; 'vhgR2/ ?c+_}ja, f/&Dy'OV7 public class TestMethod { uwyzxj gZM\RJZ_ SM@l4GH public TestMethod() {Rc/Ten { ///xx/weblogic60b2_win.exe &%>l9~F'~ try{ 37v!:xF! SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); gJ+MoAM" //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); p=coOWOQ SiteFileFetch fileFetch = new SiteFileFetch(bean); gvr"F fileFetch.start(); +%7yJmMw } WT;=K0W6& catch(Exception e){e.printStackTrace ();} u!k\W{ S3MMyS8 G{knO?BK } KY! sI@m"A
ZQD_w#0j public static void main(String[] args) s!9.o_k { 14]!LgH new TestMethod(); w[uK3A v } ]~U4; } ]ch cRc[! 点击下载更多相关资料
|