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/* %^GfS@t **SiteFileFetch.java NzOx0WLF */ =BAW[%1b package NetFox; ryUQU^v import java.io.*; ,,Q O^j]4~ import java.net.*; 3/e.38m| 'UX!*5k<: 9oR@UW1 public class SiteFileFetch extends Thread { CiLg]va `1{ZqRFQ F]]]y5t SiteInfoBean siteInfoBean = null; //文件信息Bean q" sed] long[] nStartPos; //开始位置 -g Sa_8R
long[] nEndPos; //结束位置 >kDQkhZ FileSplitterFetch[] fileSplitterFetch; //子线程对象 dkBIx$t long nFileLength; //文件长度 4,gK[ dc boolean bFirst = true; //是否第一次取文件 H-*yh! boolean bStop = false; //停止标志 [KaAXv
.X File tmpFile; //文件下载的临时信息 V0.vQ/ DataOutputStream output; //输出到文件的输出流 rt~d6|6 suiS&$-E //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 1
A
!bE public SiteFileFetch(SiteInfoBean bean) throws IOException JZ*/,|1}EC { @oY~..d` siteInfoBean = bean; m6&~HfwN //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); %wvdn tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); u4F5h PO] if(tmpFile.exists ()) lC("y'
:: { )j(7]uX` bFirst = false; 7#ibN! read_nPos(); 5Y'qaIFR } (%e.:W${ else }`QUHIF { #Z`q+@@]A nStartPos = new long[bean.getNSplitter()]; %x{kc3PnO nEndPos = new long[bean.getNSplitter()]; w/S%YW3* } ," Wr" &5spTMw8 z/WE,R EZy)A$| } !&ayYu##{ +N9X/QFKV _jI,)sr4ic public void run() C] eSizS. { ;R5`"` //获得文件长度 J^nBdofP //分割文件 W*4-.*U8a //实例FileSplitterFetch +xSHL|:b //启动FileSplitterFetch线程 o]` *M| //等待子线程返回 uK#4(eY=W try{ *1
]uH e if(bFirst) 3yY}04[9< { $L>@Ed< nFileLength = getFileSize(); ?(y*nD[a if(nFileLength == -1) HU}7zK2 { m
)zUU System.err.println("File Length is not known!"); #`iB`| } k\YG^I else if(nFileLength == -2) 5C*Pd
Wpl { ;%5N%0, System.err.println("File is not access!"); u\x}8pn } V>%rv'G8 else Ar|0b}=)> { /y#f3r+*2 for(int i=0;i<nStartPos.length;i++) bv9]\qC]T< { $s c nStartPos = (long)(i*(nFileLength/nStartPos.length)); r
CHl?J } BB$>h} for(int i=0;i<nEndPos.length-1;i++) %lx!.G { ZW8vza nEndPos = nStartPos[i+1]; v
~?qz5:K~ } 7qLpZ/ nEndPos[nEndPos.length-1] = nFileLength; {G0T$,'DR } E`0? } <8i//HOE '8.r-`l( n;Q7X>-f8` //启动子线程 A5RN5`} fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ]G=L=D^cK for(int i=0;i<nStartPos.length;i++) W$;,CU.v {
J+DDh=% fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), V`d,qn)i siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Bz-c$me1 nStartPos,nEndPos,i); S_4?K)n # Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); (sTpmQx,b fileSplitterFetch.start(); Y>T-af49 } $}q23 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 4Zddw0|2 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Q&ptc>{bH6 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", T_
<@..C nEndPos = " + nFileLength); d-ZJL6- // fileSplitterFetch[nPos.length-1].start(); @|m/djN5x oUr66a/[U f4b/NG| //等待子线程结束 $q{!5-e //int count = 0; .x.]`b( //是否结束while循环 ")5":V~fN boolean breakWhile = false; syj0.JD l
-m fFN {n.PF8A5X while(!bStop)
6f>{"' { 9Cp-qA%t write_nPos(); )5JFfp)# Utility.sleep(500); |?xN\O^#} breakWhile = true; t%FwXaO# Zw9FJ/Zn@ ]t,BMu=% for(int i=0;i<nStartPos.length;i++) "5!oi]@>( { 9c'xHO` if(!fileSplitterFetch.bDownOver) E \EsWb { v`x.)S1 breakWhile = false; 2r4Uh1D~ break; A#<? 4& } |O+H[;TB6 } F4z{LhZ if(breakWhile) 6ex/TySM break; /NFj(+&g+
(@VMH !3 ^|>PA:% //count++; 0<@KG8@hI; //if(count>4) <w9JRpFY // siteStop(); EGS)b } E_wCN&`[ g2ixx+`?|: djG*YM\B System.err.println("文件下载结束!"); KC6.Fr{ } }?i0
I catch(Exception e){e.printStackTrace ();} `25yE/ } 69NeQ$]( w3_>VIZJl pa3{8x{9m //获得文件长度 2\{M:\2o public long getFileSize() 7U"g3a)= { itP,\k7>d int nFileLength = -1; =BAr .m+" try{ _8J.fT$${ URL url = new URL(siteInfoBean.getSSiteURL()); sb*G!8j HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); !;{7-~ httpConnection.setRequestProperty("User-Agent","NetFox"); ]p GL`ge5 q`7PhA LL |r
A: int responseCode=httpConnection.getResponseCode(); ie95rZp if(responseCode>=400) iHf $ { &h)yro processErrorCode(responseCode); SHgN~Um return -2; //-2 represent access is error ..5CC;B } + GN(Ug'R _ <V)-Y ^
VyKd String sHeader; 1n8/r}q'H 7S:\"A7 lb3bm)@: for(int i=1;;i++) xm~`7~nFR { _D&598 xx //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); |SSSH
//Utility.log(in.readLine()); : *#- %0 sHeader=httpConnection.getHeaderFieldKey(i); o5PO=AN if(sHeader!=null) 9Q.Yl&A { vn8aFA if(sHeader.equals("Content-Length")) my1@41
H { )dw'BNz5hT nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); *:7rdzn break; }R2u@%n{ } J]'zIOQ } ^uc=f2=>, else {}n^cq break; iWkWR"ysy } |YWD8 + } C.-,^+t;g catch(IOException e){e.printStackTrace ();} [|$h*YK catch(Exception e){e.printStackTrace ();} {S)6;|ua' n( yn< Ll't>) Utility.log(nFileLength); YkSl^j[DHs +Kc &r/Mi% return nFileLength; nR~@#P\ } T?0eVvM BDDlQci38 vA{-{Q //保存下载信息(文件指针位置) F/{!tx private void write_nPos() T'9'G
M { Sz`,X0a try{ t3_O H^ output = new DataOutputStream(new FileOutputStream(tmpFile)); ;[DU%f output.writeInt(nStartPos.length); zC!t;*8a for(int i=0;i<nStartPos.length;i++) `U_)98 { 9cF[seE"0 // output.writeLong(nPos); F)QDJE0 output.writeLong(fileSplitterFetch.nStartPos); IEi^kJflU output.writeLong(fileSplitterFetch.nEndPos); lUZ+YD4 } .`eN8Dl1 output.close(); h[Y1?ln&h } K\r8g=U catch(IOException e){e.printStackTrace ();} bAqA1y3= catch(Exception e){e.printStackTrace ();} .L~AL|2_ } 2%m BK 2/^3WY1U </zEg3F\ //读取保存的下载信息(文件指针位置) C,r;VyW6BI private void read_nPos() <%eG:n,# { U8?mc try{ (L&d!$,Dv DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); [z{1*Xc int nCount = input.readInt(); {!L~@r nStartPos = new long[nCount]; 9Y9GwL]T nEndPos = new long[nCount]; Lqa4Vi for(int i=0;i<nStartPos.length;i++) #;yZ { ^yp{32 nStartPos = input.readLong(); N4!O.POP nEndPos = input.readLong(); Ti5-6%~& } r,p%U!S<hV input.close(); ZY+qA } ;A*]l'[- catch(IOException e){e.printStackTrace ();} oMa6(3T?E catch(Exception e){e.printStackTrace ();} XRi8Gpg } m:2^=l4 73;GW4, CD~.z7,LC private void processErrorCode(int nErrorCode) 7?_CcRe { L="}ErmK System.err.println("Error Code : " + nErrorCode); W|mo5qrLS2 } m-, x<bM? PJH& rV#ch( //停止文件下载 /U9"wvg public void siteStop() f]CXu3w(J { h:|qC`} bStop = true; wmLs/:~ for(int i=0;i<nStartPos.length;i++) VI86KJu fileSplitterFetch.splitterStop(); +mn[5Y} : q/,O\, X \/#@T } NBGH_6DROw } e\L8oOk#r //负责部分文件的抓取 YOO+R{4( **FileSplitterFetch.java ?e 4/p */ 5\nAeP package NetFox; \4fQMG .Q2V}D85 3!]rmZ-W import java.io.*; > ~O.@| import java.net.*; Gd85kY@w7 JWxwJex gPPkT" public class FileSplitterFetch extends Thread { |+9&rAg lThB2/tV\ <e6#lFQqK String sURL; //File URL OneY_<*a< long nStartPos; //File Snippet Start Position SmO~,2= long nEndPos; //File Snippet End Position K}Qa~_ int nThreadID; //Thread's ID WpvhTX boolean bDownOver = false; //Downing is over 3JR+O<3D boolean bStop = false; //Stop identical S
f#
R0SA FileAccessI fileAccessI = null; //File Access interface 9->if/r,o t ?FBG4 ?:0Jav public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Mo|2}nf { (E1~H0^ this.sURL = sURL; $I?"lky this.nStartPos = nStart; dR]m8mdqc1 this.nEndPos = nEnd; pQB."[n nThreadID = id; h<QY5=SF fileAccessI = new FileAccessI(sName,nStartPos);//定位 V0mn4sfs } ]`WJOx4 1'8YkhQ2a Nh+ H 9 public void run() 5z)~\;[ - { } Q+|W=2t while(nStartPos < nEndPos && !bStop) N;%6:I./ { f$QNg0v v3>UV8c' m1A J{cs try{ om>KU$g URL url = new URL(sURL); Ow,b^| HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); *oix 6 httpConnection.setRequestProperty("User-Agent","NetFox"); ]Hv[ IodJ String sProperty = "bytes="+nStartPos+"-"; #/37V2E httpConnection.setRequestProperty("RANGE",sProperty); 8u]2xB=K Utility.log(sProperty); F!K>K z lyhiFkO
iH A=0'Ks InputStream input = httpConnection.getInputStream(); Vxt+]5X //logResponseHead(httpConnection); BZ^}J!Q'* 1o>xEWt:0K veECfR; byte[] b = new byte[1024]; 47/iF97 int nRead; tZo} ;|~' while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) u ^RxD^=L { BY*8ri^u nStartPos += fileAccessI.write(b,0,nRead); #g!.T g' //if(nThreadID == 1) 2
yz _ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _q^E,P } hi[pVk~B) 5!9zI+S|=` Flb&B1 Utility.log("Thread " + nThreadID + " is over!"); ],].zlN bDownOver = true; EoDA]6?Lj //nPos = fileAccessI.write (b,0,nRead); %&bY]w } ,hmL/K0"(5 catch(Exception e){e.printStackTrace ();} &)<)^.@3G^ } sDV Q#}a } Cgc\
ah =2x^nW 7 X4LJf //打印回应的头信息 2:ylv<\$ public void logResponseHead(HttpURLConnection con) \73ch { 32
=z)]FZ for(int i=1;;i++) 9gZ$
{ `r_/Wt{g String header=con.getHeaderFieldKey(i); |ENh)M8}r if(header!=null) Xn
;AZu^'R //responseHeaders.put(header,httpConnection.getHeaderField(header)); >(RkZ}z Utility.log(header+" : "+con.getHeaderField(header)); jc9y<{~x/ else +ck}l2 break; .N(p=9 } bZV/l4TU } Y<8vw
d /a o5FL U/BR*Zn]* public void splitterStop() :M5l*sIO2 { {(}By/_ bStop = true; Y <qm{e } 5kXYeP3: F6dP,( rVsJ`+L } Af{"pzY KK &?gTa gZ1?G-Q /* v.5+7,4 **FileAccess.java )dSi/ *//文件访问(定位,写) 4X|zmr:A package NetFox; SX-iAS[< import java.io.*; ~PNub E W@!S%Y9 GuL<Z1<c public class FileAccessI implements Serializable{ RpYERAgT cCc(fF*^ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 )\^-2[; RandomAccessFile oSavedFile; $,'*f?d long nPos; \uMLY<]P =nHgDrA_ gPc=2 public FileAccessI() throws IOException t&DEb_"De { Ti&z1_u this("",0); Z EO WO } iG?[<1~ 3oG,E;( >yh2Lri public FileAccessI(String sName,long nPos) throws IOException tklH@'q { ^zgo#J5O oSavedFile = new RandomAccessFile(sName,"rw"); /H+a0`/ this.nPos = nPos; 7v_8_K oSavedFile.seek(nPos); M&
CqSd } 4ss4kp_> n{SJ_S#a.a A.w:h;7 public synchronized int write(byte[] b,int nStart,int nLen) 5E_YEBO/ { 2dgd~
int n = -1; =E{`^IT'R try{ k-""_WJ~^ oSavedFile.write(b,nStart,nLen); 7j)8Djzp| n = nLen; W`*r>`krVJ } /5AJ.r catch(IOException e) r!{Up7uL { FU<Jp3<% e.printStackTrace (); 7vj2
`+r. } dGTsc/$ :p6M= gKCX|cULY return n; FNId; } K 'I#W
lg o,3a4nH; 8sK9G`
k } uA#;G/$ {cw /!B k.15CA` /* #yvGK:F **SiteInfoBean.java eQvg7aO; */ _n\GNUA package NetFox; 5QO9Q]I#_\ ~.lPEA %% _oDz- public class SiteInfoBean { Q.c\/& ROZF)|l @!d{bQd, private String sSiteURL; //Site's URL *G9V'9 private String sFilePath; //Saved File's Path efE.&] private String sFileName; //Saved File's Name 9k[9P;"F: private int nSplitter; //Count of Splited Downloading File 8qu6. n@[O|?S %GIr&V4| public SiteInfoBean() `x%>8/ {//nSplitter的缺省值为5 "Os_vlapHo //default value of nSplitter is 5 ps DetP
this("","","",5); Xm2z}X(% } S?BG_J6A7 26x[X.C: 1 I",L&S1 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) {P#|zp 4C{ { U\!X,a*ts{ sSiteURL= sURL; CQDkFQq-dq sFilePath = sPath; 1hNq8*| sFileName = sName; *bpD`s
@ this.nSplitter = nSpiltter; 6/dI6C! =rX>1 IRqy%@) } 9490o:s )TM4R)r%)9 3%=~)7cF public String getSSiteURL() zT?D<XW>1 { DrK{}uM return sSiteURL; y Fq&8 x<X } =[jXe hqkz^!rp URbletSBQ public void setSSiteURL(String value) I4?5K@a { ! #2{hQRu sSiteURL = value; ayF\nk4b } t}/( b/VD 2P{Gxz<# [Cv/{f3]u{ public String getSFilePath() I?G: p+ { YQA,f# return sFilePath; Q#[9|A9 } W-lN>]5}m fZA4q0 <dhM\^[ public void setSFilePath(String value) c6]D-YNFG { hpL;bM' sFilePath = value; ZLAy-
9^Y } R@k&SlL'` wZZ t Rr|VD@% public String getSFileName() i@M[>~ { Alw3\_X return sFileName; %z4Nl$\ }
c=.(!qdH l0A&9g*l2 mUF,@>o public void setSFileName(String value) p0<\G { <B8!.|19 sFileName = value; 0b(N^$js' } fkNbS e'D&8z_; I"7u2"@-8j public int getNSplitter() bhlG,NTP { vTw>JNVI return nSplitter; GYUn6P } p,i[W.dy.' 'u<juFr y;@:ulv[ public void setNSplitter(int nCount) "o}+Ciul { =P
#] nSplitter = nCount; Aj+F
|l } 1Nd2{( }
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x>`%DwoRI (mt k 4 /* 3HY9\'t6 **Utility.java O55 xS+3^k */ !5uGd`^I package NetFox; cJ
@Wt>YI t"/q]G5 l$bu%SZ public class Utility { #';:2Nyq K?$^@N ** G9H public Utility() {8,J@9NU { Y#$%iF B%+T2=&$7 +@iA;2& } ]^K4i)\ >%8KK|V{ //线程睡眠 )+t0:GwP`: public static void sleep(int nSecond) H-f X(9 { _Qi&J.U> try{ *>qp:;,DKP Thread.sleep(nSecond); H@8sNV/u } gn".u!9j catch(Exception e) L"Olwwmk { 8k1Dj1@0z e.printStackTrace (); mk+B9?;cF- } 2{G:=U } b |p)9&^r s
15oN //日志 o.\F.C$ public static void log(String sMsg) N `F~n%N { LsS
System.err.println(sMsg); R2]Z kg } k%QpegN dP]\Jo=Yh `W/>XZl+t public static void log(int sMsg) CDR@
`1- { h/hmlnOQl System.err.println(sMsg); [>5-$Y OT } d;9FB[MmOJ } ls:w8&`* ~d*(=G p/@smke /* o:P}Wg/NK **TestMethod.java .rqhi */ @>>~CZ`l package NetFox; bsA-2*Q+ JKmIvZ)8 0-yp,G public class TestMethod { } .y
1;. 9b"=9y, 9=h'9Wo public TestMethod() ^)*-Bo)I { ///xx/weblogic60b2_win.exe
^J)mH[ try{ =\wxsL SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); >!bJslWA //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); \k!{uRy' SiteFileFetch fileFetch = new SiteFileFetch(bean); !SdSE^lz` fileFetch.start(); E+g@M8D } E3gh?6 catch(Exception e){e.printStackTrace ();} NmJWU:W_@ hD*SpVIU YhE+W } WE.{p> ll.N^y;a Jx7C'~,J public static void main(String[] args) H0`]V6+<f { -0{r>,&Mm new TestMethod(); #S*/bao# } |\IN.W[EL } 2:7zG"$ 点击下载更多相关资料
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