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/* /\{emE\] **SiteFileFetch.java u69UUkG */ OdbXna package NetFox; ff;~k?L import java.io.*; P;`Awp? import java.net.*; uBK0+FLL@ K491QXG XV}}A^ public class SiteFileFetch extends Thread { 5sANF9o! 8_VGB0~3i Lf)JO|o SiteInfoBean siteInfoBean = null; //文件信息Bean d#OAM;0}5 long[] nStartPos; //开始位置 d_,Ql708f long[] nEndPos; //结束位置 +%f6{&q$ FileSplitterFetch[] fileSplitterFetch; //子线程对象 b"aF-,M> long nFileLength; //文件长度 hFo29oN boolean bFirst = true; //是否第一次取文件 A`#?Bj boolean bStop = false; //停止标志 eBH:_Ls_-^ File tmpFile; //文件下载的临时信息 dF[|9%) DataOutputStream output; //输出到文件的输出流 hF{gN3v5 ^RJ@9`P&t //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 9Fy'L#% public SiteFileFetch(SiteInfoBean bean) throws IOException le'
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{ OwT _W)$ siteInfoBean = bean; A=0{}B# //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Y7zs)W8xTT tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); l$Vy\CfK3n if(tmpFile.exists ()) xL*J9&~iG { >$tU @mq bFirst = false; HC=ZcK'W read_nPos(); wH$qj'G4CN } ohbU~R3{U else _Vl~'+ e { -u(,*9]cJ* nStartPos = new long[bean.getNSplitter()]; Lk!m1J5 nEndPos = new long[bean.getNSplitter()]; eR,/}g\ } c4u/tt.) P-a8S*RRa \WBO(,]V Y=4
7se=h" } Do7 7V5 :tbgX;tCs5 5S8>y7knQ public void run() H~TuQ { L2p?]:- //获得文件长度 064k;|>D //分割文件 oNIYO*[ //实例FileSplitterFetch < =~=IZ) //启动FileSplitterFetch线程 I-}ms //等待子线程返回 zrqI^i"c try{ S]ayH$w\Q if(bFirst) N,Z*d { 4 ob?M:S nFileLength = getFileSize(); "P0!cY8r if(nFileLength == -1) }S8aR:' { B$6KI System.err.println("File Length is not known!"); E}KGZSj } $#-rOi / else if(nFileLength == -2) {:3\Ms# { HAL\j5i System.err.println("File is not access!"); %g:'6%26 } IIih9I`IR else ?Wz2J3A.2t { 2GORGS% for(int i=0;i<nStartPos.length;i++) (c)=Do= { 8HFCmY# nStartPos = (long)(i*(nFileLength/nStartPos.length)); ?_FL
'G } V'e%%&g~N for(int i=0;i<nEndPos.length-1;i++) Q
8Hl7__^ { PDPK|FU nEndPos = nStartPos[i+1]; P))BS } p5$}h,7 nEndPos[nEndPos.length-1] = nFileLength; QRvyaV } 6`7tTn?n } #2s}s<Sc; ZM})l9_o" \c<;!vkZ04 //启动子线程 rH!sImz, fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; _]33Ht9 for(int i=0;i<nStartPos.length;i++) ~N i { z]r'8Jc fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), v@|<. siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ~h_
_Y> nStartPos,nEndPos,i); u.|%@ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); \wD/TLS} fileSplitterFetch.start(); CV\^gTPmx } EYn?YiVFU // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), w$/lq~zU siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); h$kz3r;b," // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ,|d9lK`" P nEndPos = " + nFileLength); _Iminet // fileSplitterFetch[nPos.length-1].start(); iMJt8sd :P}3cl_ :Rb\Ca //等待子线程结束 j&,Gv@ //int count = 0; {N>ju //是否结束while循环 `@
YV boolean breakWhile = false; {Y@shf; ~9 .=t ' 7tXy3-~biz while(!bStop) 'bJGQ[c { Bkd$'7UT write_nPos(); e)wi}\:q_ Utility.sleep(500); _$96y]Bpi breakWhile = true; ed`"xm \894Jqh #?Kw
y for(int i=0;i<nStartPos.length;i++) 0:
a2ER|J { $*942. =Q if(!fileSplitterFetch.bDownOver) pdRM%ug { ?/OF=C# breakWhile = false; CdF;0A9.3 break; o *J*}y } Ny2
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<TW } La )M if(breakWhile) jcJ 4? break; 8j;Un] r@3-vLI!u ,_u7@Ix //count++; 6&os`! //if(count>4) S~);
// siteStop(); >^~^#MT } ;:D-}t; `s)4F~aVo u:f ]|Q System.err.println("文件下载结束!"); u -t=M] } ]0."{^ksL catch(Exception e){e.printStackTrace ();} a2B71 RT~ } ;&&<zWq3h ]UkH}Pt'3 -`I|=lBz{H //获得文件长度 QCW4gIp public long getFileSize() %PYO9:n { bFX{|&tHU int nFileLength = -1; Mpojabsh try{ 6^gp
/{ URL url = new URL(siteInfoBean.getSSiteURL()); S/XU4i:aV HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); kM506U<g httpConnection.setRequestProperty("User-Agent","NetFox"); Cjf[]aNJe` +r3)\L{U Jj\4P1|' 7 int responseCode=httpConnection.getResponseCode(); f256;3n if(responseCode>=400) J
_O5^=BP { ww^\_KGu7 processErrorCode(responseCode); ~o!-[ return -2; //-2 represent access is error wtek5C^ } VO:4wC"7 R'v~:wNTNs &IQ=M.!r String sHeader; uI-T]N:W8x P+j=]Yg }*6BaB for(int i=1;;i++) =IC.FT} { mITB\,,G //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); op}!1y$9P //Utility.log(in.readLine()); S?0o[7(x* sHeader=httpConnection.getHeaderFieldKey(i); 'GJB9i+a^ if(sHeader!=null) [h3xW { h9Far8} if(sHeader.equals("Content-Length")) "r&,#$6W6 { P$ o bID nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); `DY
yK?R break; N]+6< } 5?-HQoT)G } wD9K\%jIr! else ^Gk`n break; zTg\\z; } XZIapT } '|IcL1c=I catch(IOException e){e.printStackTrace ();} l
;:IL\*1I catch(Exception e){e.printStackTrace ();} }Z"iW/?" -$Z1X_~;)< !rUP&DA Utility.log(nFileLength); l53i
{o >_?i)%+) }Ja-0v)Wf return nFileLength; 4`,(*igEv } Rml'{S (A~7>\r + 0#]fEi //保存下载信息(文件指针位置) Bg~]u+c* private void write_nPos() z+"$G { dVb6u try{ \(Sly&gL output = new DataOutputStream(new FileOutputStream(tmpFile)); x?wvS]EBg output.writeInt(nStartPos.length); H3rA
?F#+* for(int i=0;i<nStartPos.length;i++) =p@`bx { !2|Lb'O // output.writeLong(nPos); cdMSC7l! output.writeLong(fileSplitterFetch.nStartPos); hObL=^F output.writeLong(fileSplitterFetch.nEndPos); &42]#B"* } !vwio! output.close(); ]UvB+M]Lv) } !J7`frv"( catch(IOException e){e.printStackTrace ();} 8o5[tl
?w catch(Exception e){e.printStackTrace ();} [{7#IZL } _<S!tW stRM*. !zE{`Ha~ //读取保存的下载信息(文件指针位置) )7
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- private void read_nPos() ]M5~p^ RB { ^@^8iZ try{ T)mQ+&| DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ?6:qAFw int nCount = input.readInt(); oV%:XuywT nStartPos = new long[nCount]; eI1zRoIl- nEndPos = new long[nCount]; H a!,9{T for(int i=0;i<nStartPos.length;i++) 0/Q_%
: { P)Adb~r nStartPos = input.readLong(); kd'b_D[$H nEndPos = input.readLong(); D]@(LbMG4 } <&E}db input.close(); tRoSq;VrS } Z@Rm^g]o catch(IOException e){e.printStackTrace ();} Q#p)?:o/ catch(Exception e){e.printStackTrace ();} {xTq5`&gT } W3.[d->X !K-1tp$ $nE{%?n-# private void processErrorCode(int nErrorCode) F1yn@a "=J { );0 System.err.println("Error Code : " + nErrorCode);
p'h'Cz } _5p$#U` R
(f:UC %ztZ#h~g //停止文件下载 px;~20$e public void siteStop() 1-gM)x{Jr { tyR?A>F4 bStop = true; Ub3$ ` for(int i=0;i<nStartPos.length;i++) lM\dK)p21O fileSplitterFetch.splitterStop(); i<ES/U\ Cv,WG]E7(
|#yu } 2y!n c% } zVE" 6 //负责部分文件的抓取 ~-'2jb*8 **FileSplitterFetch.java )U\i7[k> */ !BoGSI package NetFox; \g34YY^L3 )g:5}+ mV^w|x import java.io.*; M XG>| import java.net.*; [E9iuym @)b'3~D ko}& X= public class FileSplitterFetch extends Thread { ;<FAcR %j&vV>2 +-!3ruwSn String sURL; //File URL d*6f,z2= long nStartPos; //File Snippet Start Position :BxO6@>Xc long nEndPos; //File Snippet End Position H1-DK+Q: int nThreadID; //Thread's ID BwHJr(n boolean bDownOver = false; //Downing is over .B`$hxl*0c boolean bStop = false; //Stop identical S|=)^$: FileAccessI fileAccessI = null; //File Access interface ?nc:bC =CQfs6np:N VD.TosVeWo public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException MXSD8]je { g(&cq this.sURL = sURL; H>+/k-n- this.nStartPos = nStart; t=7Gfv this.nEndPos = nEnd; UuIjtqW nThreadID = id;
9tpyrGv fileAccessI = new FileAccessI(sName,nStartPos);//定位 ika*w } E]#;K-j <J^5l0)q \6
\bD< public void run() L\4rvZa { 8O^x~[sQ while(nStartPos < nEndPos && !bStop) >M5}L< {
f,O10`4s J^"_H:1[ :cA P{rSe try{ 1:eWZ]B5" URL url = new URL(sURL); =o(}=T>:" HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); R,T 0!f httpConnection.setRequestProperty("User-Agent","NetFox"); n~lB} String sProperty = "bytes="+nStartPos+"-"; s4Ja y!A httpConnection.setRequestProperty("RANGE",sProperty); +Ug & Utility.log(sProperty); x;[)#>.' ( %7V ?h `,@~6u InputStream input = httpConnection.getInputStream(); HK[%'OQ //logResponseHead(httpConnection); _&=`vv' 0j$=KA gNr4oOR{ byte[] b = new byte[1024]; Jz''UJY/O int nRead;
7T[L5-g while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) OXLB{|hH80 { 2]fTDKh nStartPos += fileAccessI.write(b,0,nRead); t M5(&cQ!d //if(nThreadID == 1) z
4}"oQk:r // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); *$7^.eHfdd } %ZRv+}z Z*Ffdh>*:& :+YHj)mN Utility.log("Thread " + nThreadID + " is over!"); +/&rO,Ql bDownOver = true; Yh]a4l0 //nPos = fileAccessI.write (b,0,nRead); bAt!S } *c#DB{N catch(Exception e){e.printStackTrace ();} |e8A)xM]wC } (U5XB
[r_P } ZvuY]=^3 5^uX!_r` 7UBW3{d/u5 //打印回应的头信息 -F`gRAr- public void logResponseHead(HttpURLConnection con) .x$V~t { E`N` for(int i=1;;i++) <w&'E6mU { O4-#)#-)S~ String header=con.getHeaderFieldKey(i); Wda?$3!^q if(header!=null) N_D=j6B //responseHeaders.put(header,httpConnection.getHeaderField(header)); 23LG)or.JC Utility.log(header+" : "+con.getHeaderField(header)); C=c&.-Nb9 else e|A=sCN- break; Rq15AR } i.9}bw
9u@ } <!dZ=9^^1 Il/`#b@h f$ /C.E public void splitterStop() '!X`X= { :TrP3wV_ bStop = true; -X
EK[ } s,J\nbj0h P,S!Z&! %.[AZ> } !h&h;m/c 7<jr0) \(Dm\7Q. /* '(ETXQ@ **FileAccess.java Q-_;.xy#4 *//文件访问(定位,写) a&)$s; package NetFox; s/?(G L+Ae import java.io.*; 3rh t5n2- <c`,fd8 w#(E+s~} public class FileAccessI implements Serializable{ <y-2ovw* -?T|1FA, //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 IL8&MA% RandomAccessFile oSavedFile; A}!D&s&UH long nPos; n-9X<t|*?a j~2t^Qz
"(F:'J} X public FileAccessI() throws IOException d#, { .@(MNq{"6 this("",0); D//Ts`}+n } &)Wm rF h" YA>_1 P>6wr\9i[ public FileAccessI(String sName,long nPos) throws IOException ]=^NTm, { am
WIA`n= oSavedFile = new RandomAccessFile(sName,"rw"); #5kg3OO this.nPos = nPos; h1_KZ[X oSavedFile.seek(nPos); `Oi6o[a } ZONe}tv: ~f2-%~ N'5!4JUI public synchronized int write(byte[] b,int nStart,int nLen) 0Ioa;XgOn { W$Z"" int n = -1; <
uzDuBN try{ Yv;18j*< oSavedFile.write(b,nStart,nLen); 0wl31k{ n = nLen; 0Z[8d0 } nIP*yb}5 catch(IOException e) oY%NDTVN { qxwD4L`S e.printStackTrace (); XAr YmO } D(S^g+rd xqzdXL} +l$BUX return n; bxg9T(Bj } #$>m`r Ik|nL#JH] PM%Gsy]q } tm}0kWx "Tm`V9 oW/ #/;|` /* Xn3Ph!\Z5e **SiteInfoBean.java .),m7"u| */ @(A[H^E package NetFox; dAcy;-[[P #}!Ge ;HeUD5Nt6F public class SiteInfoBean { VS \~t V"@]PI pr W`-AN}C# private String sSiteURL; //Site's URL %<8lLRl private String sFilePath; //Saved File's Path 4`7:gfrO, private String sFileName; //Saved File's Name !7-dqw%l private int nSplitter; //Count of Splited Downloading File x-/ `c /u8m|S< rBZ0(XSZQ public SiteInfoBean() V1j5jjck {//nSplitter的缺省值为5 /r Hd9^Y //default value of nSplitter is 5 N?h=Zl| this("","","",5); ]I#yS=; } +idj,J| -Ug {?
jr public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) O#E]a<N` { Y\len sSiteURL= sURL; C0X_t sFilePath = sPath; @<tkwu sFileName = sName; Ii/#cdgF this.nSplitter = nSpiltter; :U>o; nTweQ nxP>IfSA } uFIr.U$V 61q:nWs brGUK PB public String getSSiteURL() V&E)4KBOs { }^;Tt-*k return sSiteURL; +.T&U7xV } wG4=[d wvum7K{tI vcnUb$% public void setSSiteURL(String value) %SL'X`j { N246RV1W sSiteURL = value; WUSkN;idVG } 4
e1=b, Rdd[b? p`)( public String getSFilePath() `w1|(Sk$h { f:gXXigY, return sFilePath; qr[H0f] } G/Nb@pAy[ Y#EM]x5!= 00 Qn1 public void setSFilePath(String value) =#||&1U$ { \-Mzs 0R sFilePath = value; <taN3 } s_A<bW566F y-qbK0=X4 xwr<ib: public String getSFileName() ]4 2bd { ?+)O4?# return sFileName; *Y'@|xf* } fGDR<t3yiQ gz-X4A" V)CS,w public void setSFileName(String value) _,Wb`P { n$n)!XL/ sFileName = value; L|Zja* } 4hb<EH'_& X(nbfh?n I;]Q}SUsm public int getNSplitter() F3$@6J8<[z { $gU6=vN1# return nSplitter;
~{7/v } iO)FZ%?" 4vi P lO dGU io? public void setNSplitter(int nCount) / E~)xgPM< { =c
3;@CO nSplitter = nCount; Ww&~ZZZ { } 8.4 1EKr2 } \^O#)&5 V c+:LDc3!Gb spIkXEK /* +.gM"JV **Utility.java 42X N*br */ -I-u.! package NetFox; #p@8m_g amf=uysr =$5[uI2 public class Utility { 0_bt*.wI+ &sL5Pt_ {Ny\9r public Utility() >p!d(J? { EU, 4qO ^ j@Q2>&? @.kv",[{[ } ?{q w
/& kETA3(h' //线程睡眠 `<t{NJ&f public static void sleep(int nSecond) L&ws[8- { 8{Y
?;~G try{ &RXd1>|c2 Thread.sleep(nSecond); y{ 90A } k`js~/Xv catch(Exception e) 0[D5]mcv { )T#;1qNB e.printStackTrace (); ,@!8jar@w} } MvY0?!v
} <E@7CG.= 6u7(}K //日志 /+RNPQO O public static void log(String sMsg) u7j-uVG { !U>"H8}dv System.err.println(sMsg); 1s\10 hK1c } *ILS/`mdav q30WUO; ao{>.b public static void log(int sMsg) $?Aez/ { d5A!kU _. System.err.println(sMsg); QY+#Vp<` } 0&/1{Dk*n } NJUYeim; ~J<bwF CX':nai /* ErESk"2t **TestMethod.java ZX-9BJ`Q */ Q77qrx3 package NetFox; ![Ip)X
OG xxkP4,(p 2+=|!+f public class TestMethod { ";s5It
JF{,;&sj 3jS= public TestMethod() |B` -chK { ///xx/weblogic60b2_win.exe =_":Z!_ try{ X8Sk SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); Nr`nL_DQ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); #0`"gR#+ SiteFileFetch fileFetch = new SiteFileFetch(bean); \)M5o fileFetch.start(); !-.-!hBN } @O45s\4-* catch(Exception e){e.printStackTrace ();} uTl:u klf<=V 0[v :^H } W77JXD93 #eUfwd6.Y G4x.''r&Sl public static void main(String[] args) Z;>~<#!4 { J`RNik*> new TestMethod(); IN%>46e` } }2NH>qvY } 'oT}jI 点击下载更多相关资料
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