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/* -Rwx`=6tV **SiteFileFetch.java ,FwJ0V */ HF<h-gX package NetFox; z~th{4#E; import java.io.*; e!ql8wbp import java.net.*; A[`2Mnj !-m 'diE &
h\!#X0 public class SiteFileFetch extends Thread { *mz-g7 !E6QED" N<O<wtXIj SiteInfoBean siteInfoBean = null; //文件信息Bean iB}*<~`.Eg long[] nStartPos; //开始位置 RBLOc$2 long[] nEndPos; //结束位置 [ut[W9 FileSplitterFetch[] fileSplitterFetch; //子线程对象 X2E=2tXl`7 long nFileLength; //文件长度 3TRG] 5 boolean bFirst = true; //是否第一次取文件 0 _N.s5~N boolean bStop = false; //停止标志 /bF>cpM File tmpFile; //文件下载的临时信息 RgVnx] IF DataOutputStream output; //输出到文件的输出流 A*{CT> +`ug?`_ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) hGcu(kAC, public SiteFileFetch(SiteInfoBean bean) throws IOException 9TZ 6c { w8bvqTQ siteInfoBean = bean; r&_e3#]* //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); (K('@W%\? tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); /z)Nz2W if(tmpFile.exists ()) Ab8Ke|fA { CY\D.Eow bFirst = false; <cFj-Ys(T read_nPos(); M6j~`KSE } !xU[BCbfYV else lV9 { !8Y A1 o nStartPos = new long[bean.getNSplitter()]; >=86*U~ nEndPos = new long[bean.getNSplitter()]; + (Jh$b_ } VNs3. ;?y~ h$ #itZ~tol }tQ^ch; Q } _:%i6c*" d(K}v\3! Z^J7r&\V public void run() \zeu vD { >2ha6A[ //获得文件长度 2|&SG3e+(I //分割文件 MS]Q\g}U //实例FileSplitterFetch 6(>,qt,9S //启动FileSplitterFetch线程 /CUBs! //等待子线程返回 YRCOh:W* try{ R7A:K]iJ5 if(bFirst) HP\5gLVXY { vSY
YetL nFileLength = getFileSize(); 1--Ka& H if(nFileLength == -1) eCiI=HcW; { gfKv$~ System.err.println("File Length is not known!"); NieNfurG% } %LuA:{EVD else if(nFileLength == -2) M^lP`=sSv { oPVt
qQ System.err.println("File is not access!"); r^{Bw1+ } '>HLE) l else ijDXh y { m
?*h\NaB for(int i=0;i<nStartPos.length;i++) ?I u=os>* { ff]fN:}V nStartPos = (long)(i*(nFileLength/nStartPos.length)); r[wjE`Z/T } !3{;oU%* for(int i=0;i<nEndPos.length-1;i++) _M^^0kf { [c
XSk nEndPos = nStartPos[i+1]; j<k-w } [
P,gEYk nEndPos[nEndPos.length-1] = nFileLength; y#= j{ } FV{XPr%
} "ji+~%`^[t L#%)@ Cu_-QE //启动子线程 n(i/jW~0w fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; rM?
J40&. for(int i=0;i<nStartPos.length;i++) M@Ti$= { v57<b&p26 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), F3tIJz>3 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Qkw?QV-`k nStartPos,nEndPos,i); k9;t3-P Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); %j2$ ezud fileSplitterFetch.start(); 3#Iq5vT } YABi`;R]' // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), de;CEm<n siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Vt,P.CfdC // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", zZP/C
nEndPos = " + nFileLength); 5#y_EpL" // fileSplitterFetch[nPos.length-1].start(); Zy.3yQM9i B*9?mcP\ ?6HnN0A) //等待子线程结束 >x6)AH. //int count = 0; 5tk7H2K^< //是否结束while循环 *!j!o%MB boolean breakWhile = false; $/ $Hi U`. 6J">@+ saDu'SmYV while(!bStop) ~=I:go { y0p\Gu;3j write_nPos(); fWb+08}C Utility.sleep(500); ^Pah\p4bj breakWhile = true; 2 .\"Q Y/?z8g'p \#IKirf? for(int i=0;i<nStartPos.length;i++) 3`)ej` { UFC^lv if(!fileSplitterFetch.bDownOver) X\>/'fC$ { qz.l breakWhile = false; 9Q*:II break; qe22 kE# } bR;.KC3C } 'Hs* if(breakWhile) 4?bvJJuf) break; 7-C])9 =pTTXo 4TYtgP1 //count++; j WMTQLE. //if(count>4) Wc,`L$Jx // siteStop(); :DeJnE } Ypxp4B =LgMG^@mu s%8,'3& System.err.println("文件下载结束!"); 8'NT_NPNb } fsWIz1K catch(Exception e){e.printStackTrace ();} nrX+ ' } ;]bW '&2-{Y [! P]OUzI, //获得文件长度 LFr$h`_D5 public long getFileSize() o,S(;6pDJ { %$'fq*8b int nFileLength = -1; t*dq*(3"c try{ a 7=lZZ? URL url = new URL(siteInfoBean.getSSiteURL()); rQJ\Y3. HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); f0R+Mz8{ httpConnection.setRequestProperty("User-Agent","NetFox"); V-E 77u6{0 S<-5<Pg 9}L2$^#,NA int responseCode=httpConnection.getResponseCode(); jc\y{ I\ if(responseCode>=400) /5Vv5d/Z4! { X?;iSekI4 processErrorCode(responseCode); C\OZs%]At return -2; //-2 represent access is error %|1s9?h7\ } id" l" M%RH4%NZ0 &pR 8sySu String sHeader; _Vf>>tuW #?,"/Btq TtH!5{$s for(int i=1;;i++) #sk~L21A { 2E`mbT,v& //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); %NTJih` //Utility.log(in.readLine()); kP5G}Bp sHeader=httpConnection.getHeaderFieldKey(i); nLC5FA7< if(sHeader!=null) c=QN!n:
{ -@Urq>^v T if(sHeader.equals("Content-Length")) Jr= fc*f { [LUqF?K& nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); =BJe}AV break; bTZ.y.sI } =+I-9= } <M}O&?N
8x else g/\cN(X break; 2@@evQ } P2|+7D: } uu"hu||0_ catch(IOException e){e.printStackTrace ();} k@h0 }% catch(Exception e){e.printStackTrace ();} P=L@!F+s 5uOz #hN @,-D
P41g Utility.log(nFileLength); O{Mn\M6 shP}T[< F2ISg' return nFileLength; z#rp8-HUDS } OVc)PMp 2-Wy@\ euW //保存下载信息(文件指针位置) SJlE!MK private void write_nPos() +_u~Np { ^4'!B
+}F try{ ~jmI`X/ output = new DataOutputStream(new FileOutputStream(tmpFile)); ao[yHcAs output.writeInt(nStartPos.length); [tElt4uG for(int i=0;i<nStartPos.length;i++) ^]~!:Ej0 { x8~*+ j // output.writeLong(nPos); k g Rys output.writeLong(fileSplitterFetch.nStartPos); OdNcuiLa output.writeLong(fileSplitterFetch.nEndPos); Zm7,O8 } KmM:V2@A$ output.close(); NV@$\< } m6]6!_ catch(IOException e){e.printStackTrace ();} JNJ6HyCU catch(Exception e){e.printStackTrace ();} '5~l{3Lw
} b`,Sd.2=(' '
I!/I 4HX;9HPHE< //读取保存的下载信息(文件指针位置) UI%4d3 private void read_nPos() !(viXV5 { zMBGpqdP try{ UO!} 0' DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); e$JCak= int nCount = input.readInt(); t}?-ao nStartPos = new long[nCount]; bR~5
:A^ nEndPos = new long[nCount]; Zy8tI# for(int i=0;i<nStartPos.length;i++) 5zkj;?s { ]VE3u_kR nStartPos = input.readLong(); o~q.j_Sa nEndPos = input.readLong(); s.n:;8RibP } qDz[=6BF input.close(); x;-D}# } }UQ,B catch(IOException e){e.printStackTrace ();} !c-MC| catch(Exception e){e.printStackTrace ();} j]]5&u/l } n2Mpo\2 pG"hZB3) 7Cbr'!E\_V private void processErrorCode(int nErrorCode) :i@
$s/ { $b2~H+u( System.err.println("Error Code : " + nErrorCode); T!HAE#xC } 5,V*aP "r3h+(5 Y6d~hLC //停止文件下载 v\qyDZ VV public void siteStop() fX6pW%Q'6 { &^uaoB0 bStop = true; Ro<x#Uo for(int i=0;i<nStartPos.length;i++) [McqwU/Q fileSplitterFetch.splitterStop(); a"T+CA LP'q$iB! ^N
4Y*NtV7 } g)D@4RM } x K\i&A //负责部分文件的抓取 : yq2
XE%r **FileSplitterFetch.java 6E:H */ /C5py-I package NetFox; 8Gy*BpmJn ;l `Ufx sG[qlzR=8 import java.io.*; J$sp6g>K import java.net.*; s{V&vRr 8Q{9AoQ3' w'VuC82SZ public class FileSplitterFetch extends Thread { U5@B7v1 \u(Gj]B#"
E}a.qM' String sURL; //File URL OYn5k6 long nStartPos; //File Snippet Start Position RL/7>YQ long nEndPos; //File Snippet End Position ua &uR7 int nThreadID; //Thread's ID FeQo,a boolean bDownOver = false; //Downing is over _bg Zl boolean bStop = false; //Stop identical jVN=_Y}\ FileAccessI fileAccessI = null; //File Access interface GC3d7 Fm6]mz%~u# `w8cV? public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException x!pd50- { )1R[X!KQ7 this.sURL = sURL; ImH9 F\ this.nStartPos = nStart; 0Q8iX) this.nEndPos = nEnd; A )CsF nThreadID = id; ,1lW`Krx fileAccessI = new FileAccessI(sName,nStartPos);//定位 '&K' 0qG } !W0JT#0 7.g,&s%q X}C8!LA public void run() .*>C[^ { Z?3B1o9 while(nStartPos < nEndPos && !bStop) m(kv:5<> { R\#5;W^ H1KXAy`& R[fQ$` M try{ K V?+9qa, URL url = new URL(sURL); @Gw]cm HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); O&~
@ior httpConnection.setRequestProperty("User-Agent","NetFox"); nmE H/a String sProperty = "bytes="+nStartPos+"-"; QQS"K
g httpConnection.setRequestProperty("RANGE",sProperty); ^8-,S[az Utility.log(sProperty); f;l}Z|dok6 {)!ua7GF0H 9L4;#cy InputStream input = httpConnection.getInputStream(); U~@;2\
o //logResponseHead(httpConnection); >c5 ^gpd '*b qNrLM!Rj byte[] b = new byte[1024]; Fl{~#] int nRead; 7M5HvG#w% while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) a\Gd;C ^` { ?:l:fS0:{ nStartPos += fileAccessI.write(b,0,nRead); 5INw#1~ //if(nThreadID == 1) 2bw.mp&v1 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ;'Z"CbS+ } -4F}I3I xcQ^y}JN D(dV{^} 9 Utility.log("Thread " + nThreadID + " is over!"); oY,{9H37b bDownOver = true; >qO l1]uF //nPos = fileAccessI.write (b,0,nRead); f><V;D# } v@s"*E/PF7 catch(Exception e){e.printStackTrace ();} Z.unCf3Q } Jcs
/i } vQn hb% E piF$n k*F9&-rtN //打印回应的头信息 iS"6)#a72 public void logResponseHead(HttpURLConnection con) I|c?*~7* { 0QrRG$<4X for(int i=1;;i++) R3)ccom { hjk]?MC String header=con.getHeaderFieldKey(i); ,kYX|8SO if(header!=null) bu\(KR$s //responseHeaders.put(header,httpConnection.getHeaderField(header)); EqIs&){ Utility.log(header+" : "+con.getHeaderField(header)); O~x{p,s
U else ;<E?NBV^ break; ]rg-=Y k } pI>GusXg } n: {f\ <4 /q5*& |q\i, } public void splitterStop() F*Yx1vj { s+G(N$0U bStop = true; dpt P(H } ZGCp[2$ \RFA?PuY /;21?o } &f?JtpB EKsOj&ZiJ HAs/f#zAk6 /* 1L\r:mx3 **FileAccess.java |N
2r?b/g *//文件访问(定位,写) q$}J/w(, package NetFox; ~=oCou`XF import java.io.*; Ip8:~Fl] @j%@Z $~
d6KFT public class FileAccessI implements Serializable{ wXBd"]G)C CR#-!_=4 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 $,I@c"m{ RandomAccessFile oSavedFile; n>SK2` long nPos; k{ZQM Jk{v(W# b#t5Dve public FileAccessI() throws IOException 0 EA3>$; { U56g|V this("",0); la$%%@0/ } ^hT2ed + XZ(<Mo\v 20J-VN: public FileAccessI(String sName,long nPos) throws IOException ']OT7)_ { { W5
_KX oSavedFile = new RandomAccessFile(sName,"rw"); RgM=g8}M this.nPos = nPos; ^ ~Tn[w W_ oSavedFile.seek(nPos); Sb)} } =~)rT8+) "#f5jH 9c{ ~$zJW public synchronized int write(byte[] b,int nStart,int nLen) uX1{K%^<TW { %y)hYLOJ int n = -1; qpa}6JVQ+j try{ 2G3Hi;q18 oSavedFile.write(b,nStart,nLen); {)Wa"|+ n = nLen; Un5 AStG } }ZiJHj'< catch(IOException e) C!^;%VQ}d { cVmF'g e.printStackTrace (); 8N<mV^|} } e?]HNy -Wre4^,v T[cJ return n; "`a,/h' } )$*B vP%:\u:{ #9qX:*>h } f&$$*a -7Kstc- P4E_<v[ /* l)EtK&er(} **SiteInfoBean.java 4>Nig.# */ : 'pK package NetFox; ]/[@.
/}CAd *ck'vV'@ public class SiteInfoBean { XuU>.T$] c .n?i'8 D@@"w+ private String sSiteURL; //Site's URL J10&iCr{r* private String sFilePath; //Saved File's Path ~BnmAv$m[ private String sFileName; //Saved File's Name W3R43>$ private int nSplitter; //Count of Splited Downloading File nwDGzC~y< $)=`Iai AD6 b public SiteInfoBean() &oFgZ . {//nSplitter的缺省值为5 !D/W6Ic@ //default value of nSplitter is 5 9'ky2
]w this("","","",5); _skE\7&>X } 7Q&S []) f67pvyy - %PK(Z*> public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) J DOs.w { 4#ifm# sSiteURL= sURL; eX0[C0# sFilePath = sPath; <LX-},?P sFileName = sName; d%p{l)Hd this.nSplitter = nSpiltter; Y"m}=\4{ $:vS_# 98UI]? 4 } +NOq>kH@ 4:kDBV;v }5B\:*yW public String getSSiteURL() koj*3@\p/ { gf/<sH2} return sSiteURL; @?t+O'& } K>-01AGHL 8N`Rf;BM (!Fu5m=<8 public void setSSiteURL(String value) ~P*{%= a { Ve40H6Ox sSiteURL = value; ]2iEi`"[ } SxX ;g<y{o"Q3p OgCNqW
d- public String getSFilePath() bhfC2@ { '\"5qB return sFilePath; 81)i>] } @U =~c9 gaE8\JSr =}SLQdT public void setSFilePath(String value) J@ 8OU { g}*p(Tp9: sFilePath = value; )k4&S{= } ~!/a gLwY uME_/S uO Z07n>|WF- public String getSFileName() LvL2[xh%& { (:}}p}u return sFileName; X 0LC:0+ } Yv"B-oy NK%Ok ,lb}&uZo public void setSFileName(String value) ]Z[0xs { !H6X%hlk sFileName = value; bj?=\u } )X8N|W>vh |jcIn[)= V&lx0Dy public int getNSplitter() mRC { V2'5doo return nSplitter; hXD/ } 6E_YUk?KW <s'0<e!./t 65rf=*kz: public void setNSplitter(int nCount) Mh@n>+IR { LeNSjxB nSplitter = nCount; s Dsq:z } 7{NH;U t } C879eeJ @r\{iSg&g. Nema>T] /* G"Hj$ **Utility.java :_o^oi7G */ oZi{v]4 package NetFox; ##OCfCW Qp>Z&LvC5 D|'[ [= public class Utility { ,z>w^_ BUyKiMW 49 mR8tW"Z2 public Utility() yI%q3lB}^ { /.sho\a &{ZUY3 4Wa*Pcj } y'O<*~C(X 1r3}
V7 //线程睡眠 vXG?8Q public static void sleep(int nSecond) Xu|2@?l9 { *dsI>4%m try{ XaMsIyhI Thread.sleep(nSecond); SUjo%3R } !mUO/6Q hq catch(Exception e) 4AKPS&k; { <@Y`RqV + e.printStackTrace (); eAG)+b } f5/s+H! } as[! 9tB] p+b$jKWQ //日志 Hk=HO|&<XB public static void log(String sMsg) r4b-.>w { S7~HBgS< System.err.println(sMsg); g~76c.u- } j@{dsS:6 .-Dc%ap] al7D3J public static void log(int sMsg) $ k_6 { @\W-=YKLg System.err.println(sMsg); NnaO!QW% } bc>&Qj2Z7c } xT!<x({ QH?sx k2 QuC_sFP10 /* _7dp(R **TestMethod.java ,,lR\!>8 */ 5gb:,+ package NetFox; uJ0Wb$% }^^c/w_ pX1Us+% public class TestMethod { S27s Rxfr zU_dk'&, {@k
, e public TestMethod() > }kZXeR| { ///xx/weblogic60b2_win.exe 3jHg9M23[^ try{ .bj:tmz SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); d qO]2d //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); =r3g:j/>q SiteFileFetch fileFetch = new SiteFileFetch(bean);
=y`-:j\ fileFetch.start(); 6;;2e> e } l+X\>, catch(Exception e){e.printStackTrace ();} d ,.=9 ]EG8+K6 A8Km8" } 4vCUVo r XWq"_$&LF d1'= \PYr public static void main(String[] args) 5hTScnL% { `7[!bCl new TestMethod(); $9:
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