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/* ^rO!- **SiteFileFetch.java Zlt,Us` */ t0?tXe.B package NetFox; E70o nR!i import java.io.*; b_u;
`^ import java.net.*; bA'N2~., hSN38wy
><.*5q public class SiteFileFetch extends Thread { .81 ~ K[ ~]9EhC'l %h;1}SFl0 SiteInfoBean siteInfoBean = null; //文件信息Bean TTWiwPo59 long[] nStartPos; //开始位置 |+JC'b?, long[] nEndPos; //结束位置 ccx0aC3@I FileSplitterFetch[] fileSplitterFetch; //子线程对象 bj_/ long nFileLength; //文件长度 Z.rhM[*+0C boolean bFirst = true; //是否第一次取文件 >z%WW&Z' boolean bStop = false; //停止标志 ~BE=z: File tmpFile; //文件下载的临时信息 :~ 	 DataOutputStream output; //输出到文件的输出流 tO D}& [@3.dd //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) b`Jsu!?{ public SiteFileFetch(SiteInfoBean bean) throws IOException AM#s2.@ { :QHh;TIG=< siteInfoBean = bean; ,g3n/'rP% //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); !/!Fc'A tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); E8wkqZN if(tmpFile.exists ()) L$"pk{' { a]6dhQ` bFirst = false; >svx
8CT read_nPos(); 1zCgPiAem } CHjm7 else ,w=u? { 6\VZ6oS nStartPos = new long[bean.getNSplitter()]; A6E~GJa nEndPos = new long[bean.getNSplitter()]; -D1A } JL<<EPC F7]8*[u Cy)QS{YX wSdiF-ue } O*n@!ye l%?()]y 9%0^fhrJ public void run() KFaYn { |@f\[v9` //获得文件长度 ICc:k%wE7 //分割文件 rZ.z!10 //实例FileSplitterFetch o,?h}@ //启动FileSplitterFetch线程 x cZF_elt7 //等待子线程返回 ,E@}=x9p try{ N] pw7S% if(bFirst) RX^Xtc" { a1Q W0d nFileLength = getFileSize(); |0X~D}r|J if(nFileLength == -1) ta'wX { 0bSnD|#I System.err.println("File Length is not known!"); rd=+[:7L } Gq%,'amf else if(nFileLength == -2) /#q6.du { FJ{&R Ld System.err.println("File is not access!"); hx4c`fOs } X+N8r^& else Im]6-#(9\| { @~&^1%37) for(int i=0;i<nStartPos.length;i++) gkca{BJ { D^U?!S&4~ nStartPos = (long)(i*(nFileLength/nStartPos.length)); U]9k,# } WZP1g kX&M for(int i=0;i<nEndPos.length-1;i++) b?,=|H { QNx xW2+ nEndPos = nStartPos[i+1]; K(P.i^k } Ht]O:io` nEndPos[nEndPos.length-1] = nFileLength; 5v=e(Ph+ } @Q&k6.{4Z } H7meI9L g+(Y)9h& &^Gp //启动子线程 K `A8N fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; X/m~^ for(int i=0;i<nStartPos.length;i++) ^f,%dM=i= { Blj<|\igc fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1xO-tIp/ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), YlR9
1LX nStartPos,nEndPos,i); %u2",eHCB Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 4[Wwm fileSplitterFetch.start(); ][YC.J } ft4hzmuzM // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), /bo`@ !-# siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); mrr -jo // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", mMO]l(a& nEndPos = " + nFileLength); FchO
6O // fileSplitterFetch[nPos.length-1].start(); Az:A,;~+,! 8q:#
' :sAUV79M //等待子线程结束 A8:eA //int count = 0; VssWtL //是否结束while循环 K}'?#a(aX= boolean breakWhile = false; +Y$EZL.A
IA`Lp3Z _c}# f\ +_ while(!bStop) E@AV?@<sc { J=HN~B1 write_nPos(); 0F
2p4!@W Utility.sleep(500); >&^jKfY breakWhile = true; @3S:W2k SzfMQ@~ _sY;
dS/ for(int i=0;i<nStartPos.length;i++) &)_
z! { 1y,/|Y if(!fileSplitterFetch.bDownOver) 3UUN@Tx { >gz8,& breakWhile = false; [X>f;;h break; POX{;[SV } 4Tb"+Y} } \5Y<UJKi if(breakWhile) da@W6Ov x break; 2(Aw GR_caP n9-WZsc1 //count++; @Y}G,i //if(count>4) e0<O6 // siteStop(); nyBT4e } Zq5~M bldh 9\0$YY% T8yMaC System.err.println("文件下载结束!"); io@f5E+? } fVdu9 l catch(Exception e){e.printStackTrace ();} eo.B0NZsF } ,zxv>8Nt \Pe+]4R-Xo P4+PY 8 //获得文件长度 b/
h#{' public long getFileSize() rj4R/{h { w6pXF5ur> int nFileLength = -1; ff~1>=^
try{ ~qK/w0=j URL url = new URL(siteInfoBean.getSSiteURL()); \)ZCB7| HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); }<*KM)% httpConnection.setRequestProperty("User-Agent","NetFox"); tf[)| /M 3Vak
C QX-n l~ int responseCode=httpConnection.getResponseCode(); ru4M=D if(responseCode>=400) b`F]oQ_* { 2.MY8}&WBu processErrorCode(responseCode); 2.
v<pqn return -2; //-2 represent access is error >`0mn|+ } $dA]GWW5A Ba**S8{/` 2waPNb| String sHeader; ydAiH*> |--Jd$ dj +(^HL3 for(int i=1;;i++) l,zhBnD { 8 )n g> l //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ?nWzJ5w3 //Utility.log(in.readLine()); |68k9rq sHeader=httpConnection.getHeaderFieldKey(i); 5HIQw9g6 if(sHeader!=null) vo%"(! { S5d if(sHeader.equals("Content-Length")) DJAKF { ? Dn} nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Y*S:/b~y break; g4952u } BRM!g9 } ]hoq!:>M1 else 0G0(g,3p break; k[,0kP; } AWKJ@&pA9m } G=SMz+z catch(IOException e){e.printStackTrace ();} %l6E0[ catch(Exception e){e.printStackTrace ();} 9C0#K\ iq[IZdza 1ANb=X|hig Utility.log(nFileLength); vm'Z A7f6 N"suR}9% 9y<h.T return nFileLength; 1X&jlD? } 6U.|0mG[ $*T?}r> | L1+7 //保存下载信息(文件指针位置) $mh\` private void write_nPos() Iy&,1CI"] { 0U H] try{ RZ;s_16GQ output = new DataOutputStream(new FileOutputStream(tmpFile)); c?u*,d) G output.writeInt(nStartPos.length); S(?A3 H for(int i=0;i<nStartPos.length;i++) B?- poB& { u6Lx3 // output.writeLong(nPos); =:]v~Ehq output.writeLong(fileSplitterFetch.nStartPos); S#$Kmm
| output.writeLong(fileSplitterFetch.nEndPos); ??U/Qi180 } aWJj@',_ output.close(); |_>^vW1f } 7GWOJ^) catch(IOException e){e.printStackTrace ();} Q2uV/M1? catch(Exception e){e.printStackTrace ();} I.GoY[u_% } |ns?c0rM / of K7/ $(Mz@#% //读取保存的下载信息(文件指针位置) ovBmo2W/ private void read_nPos() (Bd'Pj]: { tiHR&v try{ ?%}!_F`h% DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); "\KBF int nCount = input.readInt(); $|.8@
nj nStartPos = new long[nCount]; kFV, Fg nEndPos = new long[nCount]; V3cKbk7~ for(int i=0;i<nStartPos.length;i++) yxo=eSOM { Jk6}hUH, nStartPos = input.readLong(); n2hV}t9O nEndPos = input.readLong(); 6CIzT. } ~IS8DW$; input.close(); va'F '| } $i5J} catch(IOException e){e.printStackTrace ();} }$4z$& catch(Exception e){e.printStackTrace ();} %kjG[C } d%"XsbO y{>f^S< Xa?O)Bq. private void processErrorCode(int nErrorCode) ,7]hjf_h { yy7(')wKO System.err.println("Error Code : " + nErrorCode); '=n?^EPE3 } N+rU|iMa. g-~ _gt7 D5D *$IC //停止文件下载 K+F"V W*? public void siteStop() 2 HEU { yXJ25Axb bStop = true; ExS5RV@v' for(int i=0;i<nStartPos.length;i++) )ffaOS!\ fileSplitterFetch.splitterStop(); JhFbze> :^v Q4/, {E:` } iM)K:L7d } <$0is:] //负责部分文件的抓取 pg4W?N` **FileSplitterFetch.java f
+{=##'0 */ O -1O@:}c package NetFox; IMH4GVr" vSH,fS-n 0\P5=hD)K import java.io.*; HcsVq+ import java.net.*; .d]/:T
-0 A'DFY { %N*[{j= ^ public class FileSplitterFetch extends Thread { c$Kc,`2m7 )8@- F@i>l{C String sURL; //File URL ?e$&=FC0; long nStartPos; //File Snippet Start Position -3{Q`@F long nEndPos; //File Snippet End Position ^ `y7JXI: int nThreadID; //Thread's ID k&ci5MpN boolean bDownOver = false; //Downing is over a)QT#. boolean bStop = false; //Stop identical | ys5.| FileAccessI fileAccessI = null; //File Access interface Q)DEcx-|, .gx^L=O: yV(#z2| public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException "?NDN4l* { n1."Qix0 this.sURL = sURL; eiKY az this.nStartPos = nStart; R| ?Q&F_$ this.nEndPos = nEnd; (p-q>@m nThreadID = id; >^s2$@J?p fileAccessI = new FileAccessI(sName,nStartPos);//定位 MXaFqK<Y } .xJ54Vz wk|+[Rl;L 4=L > public void run() jIubJQR~ { 6e-ME3!<l while(nStartPos < nEndPos && !bStop) >n"0>[:4 { 3ZXAAV >dl5^
XIInI try{ J4T"O<i$58 URL url = new URL(sURL); :#YC_
id HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); .4zzPD$1 httpConnection.setRequestProperty("User-Agent","NetFox"); J!uG/Us String sProperty = "bytes="+nStartPos+"-"; Hr?lRaV httpConnection.setRequestProperty("RANGE",sProperty); d%7?913 Utility.log(sProperty); 9\Jc7[b MB)<@.A0 xt^1,V4Ei~ InputStream input = httpConnection.getInputStream(); ]Dq6XR //logResponseHead(httpConnection); A9xeOy8e }~
D
WB" `K{} byte[] b = new byte[1024]; I3Vu/&8f| int nRead; ^*ZaqMA while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) |+
F ~zIu' { mw"FQ?bJ nStartPos += fileAccessI.write(b,0,nRead); $JY\q2 //if(nThreadID == 1) XoKgs, y4 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); HMd?` } cGV%=N^BE< w%]) 5A0]+)5E8 Utility.log("Thread " + nThreadID + " is over!"); Hu|Tj<S bDownOver = true; jEBn"]\D //nPos = fileAccessI.write (b,0,nRead); u@_|4Bp," } rI$NNk'A catch(Exception e){e.printStackTrace ();} _&-d0'+ } |4@cX<d. } z*},N$2= p<L7qwOii %0Ur3 //打印回应的头信息 ]9YA~n\ public void logResponseHead(HttpURLConnection con) IWo'{pk { mx9vjWfy for(int i=1;;i++) JBpV'_"] { fu!T4{2 String header=con.getHeaderFieldKey(i); PNm@mC_fh if(header!=null) \TP$2i%W //responseHeaders.put(header,httpConnection.getHeaderField(header)); /9_%NR[
Utility.log(header+" : "+con.getHeaderField(header)); 38w^="-T else D\Ez~.H break; chICc</l& } /r7xA}se^ } )BJkHED{ l= {Y[T& &{j!!LL public void splitterStop() -E}X`?WhD { dXTD8 )& bStop = true; `4K|L6 } Wc@
,#v ;.4y@?B f\R_a/Us } )WoH>D B?BOAH ^SpQtW118 /* =2$(
tXL **FileAccess.java LuySa2, *//文件访问(定位,写) kN/YnY*J< package NetFox; uGZGI;9f4 import java.io.*; |3~m8v2- RG'iWA,9m` [!)HWgx public class FileAccessI implements Serializable{ 1J[$f>%n] $I9&cNPv //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Cf(WO-F^ RandomAccessFile oSavedFile; # `^nmC/F long nPos; 3@" :& M-t9M~ @XJ7ff& public FileAccessI() throws IOException lrJV"H { Pm%xX~H this("",0); /0\g!29l< } ~u%$ 9IhM 3zB'AG3b WVR/0l&bU public FileAccessI(String sName,long nPos) throws IOException a{xJ#_/6 { qy'-'UlIr oSavedFile = new RandomAccessFile(sName,"rw"); kl]V_ 7[ this.nPos = nPos; ,ciX *F" oSavedFile.seek(nPos); c!E{fS P } *+rfRH]a A O5&Y.A# |tAkv public synchronized int write(byte[] b,int nStart,int nLen) XYvj3+ {
anSZWQ int n = -1; __b4dv try{ C<_\{de|9 oSavedFile.write(b,nStart,nLen); xT 06*wQ n = nLen; &pY' } Movm1*&= catch(IOException e) P%:?"t+J`; { t{c:<nN e.printStackTrace (); *+*W# de. } ND1hZ3(^ x\'3UKQP+^ RNc:qV<H return n; X{ x(p } ;h1hz^Wq Tz)Ku |mKohV qr } LF7 }gQs
^ l :{q I#Q :m`D /* t*= nI $ **SiteInfoBean.java >c_fUX={ */ oJD]h/fQs package NetFox; {_b2!!p E0I/]0 ]r#b:W\ public class SiteInfoBean { D9TjjA|zS Ja~8ZrcY ;=n}61 private String sSiteURL; //Site's URL ho$}#o private String sFilePath; //Saved File's Path HWV A5E[`Y private String sFileName; //Saved File's Name ogIu\kiZ private int nSplitter; //Count of Splited Downloading File s=:)!M.i 6hj[/O)E Y-bTKSn public SiteInfoBean() +ZbNSN= {//nSplitter的缺省值为5 VLV]e_D6s //default value of nSplitter is 5 y7/4u-_c this("","","",5); ?;o0~][! } 4L,wBce;,t - BWf. )Wle
CS_ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) R]yce2w" z { R ?s;L
r sSiteURL= sURL; D SX%SE) sFilePath = sPath; }>M\iPO.]* sFileName = sName; ^1~lnD~0 this.nSplitter = nSpiltter; b_`h2dUq r^6@Zwox] ?#GTD?3d } Y:/p0o =COQv= GT qv(3qY public String getSSiteURL() gHc1_G] { ;:Z5Ft m return sSiteURL; iT:i
'\~ } iDcTO} \)5mO 8w <pV8
+V) public void setSSiteURL(String value) zgz!"knVx { j_d}?jh sSiteURL = value; p>eYi \' } R`]@.i4tt d`TiY` ! d BB?A~ public String getSFilePath() c/ImK`:)4a { cz,CL/rno return sFilePath; mxZ+r#|di } {96MfhkeBv :[+8(~| za !U:&8Le public void setSFilePath(String value) D}
B?~Lls { ~ Rk.x
+ sFilePath = value; |=ph&9 } @p~scE.#\ x %`YV):* Wu*
4r0 public String getSFileName() va_u4 { /ojx$Um return sFileName; qCI7)L` } \]4EAKJE qpFxl =8#.=J[/ public void setSFileName(String value) ,mx\
-lWFy { ;Q,t65+Am sFileName = value; 0?oL zw& } p*5_+u 1K#[Ef4 OqS!y(
( public int getNSplitter() im9w|P 5 { E oixw8hz return nSplitter; f.$[?Fi } d:|x e : C{$iuus0 PX/Y?DP public void setNSplitter(int nCount) 1OExa<Zq { g_{N^wS nSplitter = nCount; 6)0.q|Q } ;v\s 7y } n%29WF6Zf )V~=B] s}". po] /* fZ & **Utility.java x#3*C|A */ u;
KM[FmK package NetFox; LDEc}XXb ~b*]jZwT ,ja!OZ0$ public class Utility { RtR@wZ2\s o}G`t
Bz niCK(&z public Utility() 2DPv7\fW { RHBQgD$ &-qQF`7 m
W>Iib| } >v, si]. pl3ap(/ //线程睡眠 Lu6g`O:[' public static void sleep(int nSecond) ?e6>dNw { wdP(MkaV try{ E"VFBKB Thread.sleep(nSecond); xE;O =mI } b
MD| catch(Exception e) g(tVghHxt$ { M1WD^?tKQ. e.printStackTrace (); z]rr
Q=dAA } m-azd~r[ } ]w>o=<?b ]i(/T$?~ //日志 4 @{?4k-cq public static void log(String sMsg) _b%) { W;=Ae~ System.err.println(sMsg); /;(ji?wN } Ur]$@N #0T/^ # FHU6o910 public static void log(int sMsg) L~t<
0\r { 6Jq[]l"v System.err.println(sMsg); ,k~' S~w. } 1UJ rPM% } V6P-?Nd p&RC#wYu 04dz?`HuB /* p,8~)ic_ **TestMethod.java >nSt<e */ }~+,x# package NetFox; 131(0nl)=I xrvM}Il 1Zn8CmE V public class TestMethod { R`c[?U DNq(\@x[! s*la`(x public TestMethod() l[:Aq&[o3 { ///xx/weblogic60b2_win.exe >-N(o2j3 try{ M{5AQzvs SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); RVV` //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); i:aW
.QZ. SiteFileFetch fileFetch = new SiteFileFetch(bean); ="YGR: fileFetch.start(); B
}%2FUv } ~C%I'z' catch(Exception e){e.printStackTrace ();} nI]EfHU <7Pp98si,u \fTQNF } !\4B. #}y8hzS$ ?Q-Tyf$3 public static void main(String[] args) 9r]|P}yuS { B ktRA new TestMethod(); SdYf^@%}F } =${.*,o }
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