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/* R>dd#`r" **SiteFileFetch.java jxTYW)E */ {q|Om?@ package NetFox; J:oAzBFpA import java.io.*; EN{o3@ O' import java.net.*; lq}g*ih M*7:-Tb]C HAc1w]{( public class SiteFileFetch extends Thread { q-TDg0 ,BE4z2a )|j?aVqZ SiteInfoBean siteInfoBean = null; //文件信息Bean
w[Q)b() long[] nStartPos; //开始位置 )T!3du:M long[] nEndPos; //结束位置 ^{l$>e] FileSplitterFetch[] fileSplitterFetch; //子线程对象 &~sirxR p long nFileLength; //文件长度 5;q{9wvqO boolean bFirst = true; //是否第一次取文件 0.
mS^g,M- boolean bStop = false; //停止标志 v 5dLjy5 File tmpFile; //文件下载的临时信息 .l +yK-BZ DataOutputStream output; //输出到文件的输出流 >
,;<Bz|X ^~K[ bFbW //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) j-9Zzgr public SiteFileFetch(SiteInfoBean bean) throws IOException a/dq+ { pT'jX^BU siteInfoBean = bean; OO*2>Qy~z //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); p~f=0K tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ^s_7-p])( if(tmpFile.exists ()) `$i/f(t6` { XWv;l) bFirst = false; yNOoAnGT W read_nPos(); +S
],){ } Ucd~-D else Qkb=KS%z { 0UOjk.~b nStartPos = new long[bean.getNSplitter()]; oJe`]_XZ nEndPos = new long[bean.getNSplitter()]; eH^~r{{R } aDZ] {; MeW?z|x`' 2i)vT)~ h@%a+ 6b? } (qdvvu#E LGT?/gup xj;V public void run() OmLe+,7' { 'e:(61_ //获得文件长度 LZ<^b6Dxk //分割文件 ]oxi~TwY^ //实例FileSplitterFetch 0Ait7` //启动FileSplitterFetch线程 M*2
Nq=3 //等待子线程返回 (Fs{~4T try{ MZ"|Jn if(bFirst) s"B+),Jod { )%vnl~i! nFileLength = getFileSize(); jj6yf.r6c if(nFileLength == -1) ch]{=61 { njckPpyb@ System.err.println("File Length is not known!"); M$U Zn } X}B]0z> else if(nFileLength == -2) ;bRyk# { {B[ }}wX$ System.err.println("File is not access!"); Nx=rw h } 2(H-q( else d;.H9Ne { 52t6_!y+V for(int i=0;i<nStartPos.length;i++) *cAI gO7 { RZP7h>y6@ nStartPos = (long)(i*(nFileLength/nStartPos.length)); Kjt\A]R% } +0g L!r for(int i=0;i<nEndPos.length-1;i++) tR(nD UHV5 { -mw`f)?Ev nEndPos = nStartPos[i+1]; p((a(Q/ } -_ <z_IL\% nEndPos[nEndPos.length-1] = nFileLength; qylI/,y{ } ip!-~HNwJ } +F+M[ef<ws ,-[z?dvO hGJANA //启动子线程 KZ@'NnQ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; n}/4em? for(int i=0;i<nStartPos.length;i++) M< / { tn}MKo fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .zv BV_I siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 8p_6RvG nStartPos,nEndPos,i); 9J$-E4G.M Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); zD;k|"e fileSplitterFetch.start(); uR6 `@F } lRR A2Kql // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), "{[\VsX|c siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); gUY~
l= c // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", u6SQq-)d nEndPos = " + nFileLength); 8]Q#P // fileSplitterFetch[nPos.length-1].start(); *USG
p<iH fwNj@fl_,e 0+F--E4 //等待子线程结束 !<?<f
db //int count = 0; <.&84c]/& //是否结束while循环 ?!y<%&U boolean breakWhile = false; ;OZl'
. %` \3`r/,wY 33g$mUB while(!bStop) Lg{M<Q)4 { }:57Ym)7w write_nPos(); 7 j6< Utility.sleep(500); B>g(i=E breakWhile = true; H*Tzw,f~ v @Gt.J*!s/ ty'/i!/\ for(int i=0;i<nStartPos.length;i++) 2'u% { H$.K
if(!fileSplitterFetch.bDownOver) LVT:oIQ { Kc,i$FH breakWhile = false; 8Qhj_ break; Xw3j(`w$, } ,B'fOJ.2 } .y<u+) if(breakWhile) |}b~YHTs break; ,Oe:SZJ> -iL:D<!Cb_ ~;#sj&~ //count++; :IucH%6V //if(count>4) OY8P // siteStop();
N'i)s{' } [iZH[7&j Ph8@V}80"Y 2M=h:::W System.err.println("文件下载结束!"); <w`EU[y_ } ;cB3D3fR. catch(Exception e){e.printStackTrace ();} SP/'4m } -Aojk8tc Y&H<8ez +lb&_eD //获得文件长度 nW}jTBu_K+ public long getFileSize() i%[+C { LosRjvQ: int nFileLength = -1; v3]5`&3~ try{ XJ5@/BW URL url = new URL(siteInfoBean.getSSiteURL()); '6;
{DX HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); @JGFG+J} httpConnection.setRequestProperty("User-Agent","NetFox"); \*[DR R0 huW,kk<]y hQ'W7EF int responseCode=httpConnection.getResponseCode(); YmOj.Q& if(responseCode>=400) ea]qX6)UZ { $JUkwsc processErrorCode(responseCode); ja9=b?]0, return -2; //-2 represent access is error Wf^sl } x-]:g&5T t+_\^Oa) D|ra ;d String sHeader; (cyvE}g 6l[v3l"t U!NuiKaQ26 for(int i=1;;i++) zXD/hM { U8J9 #+: //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); lrj&60R`w //Utility.log(in.readLine()); bv VkN sHeader=httpConnection.getHeaderFieldKey(i); < Sgc6>) if(sHeader!=null) &>]U c%JK { 6~Dyr82"B if(sHeader.equals("Content-Length")) *V7mM? { Yxbg _RQm nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ="v`W'Pd break; eh>
|m>JY } r}es_9*~Z } ?|98Y"w else (~o"*1fk>
break; M[~{!0Uz
g } P;o{t } JsNj!aeU% catch(IOException e){e.printStackTrace ();} *5.wwV catch(Exception e){e.printStackTrace ();} 1y\bJ 3&CV!+z OTE,OCB[ Utility.log(nFileLength); :P/VBX h
PpKjjA< zyhM*eM.7 return nFileLength; ]A5Y/dd } (qvH=VTwP jXLd#6 o$eCd{HuX //保存下载信息(文件指针位置) ;mT}Q;F# private void write_nPos() : NA(nA
3 { 3UaW+@ try{ ^ghYi|kQq output = new DataOutputStream(new FileOutputStream(tmpFile)); qxDMDMN output.writeInt(nStartPos.length); "T{WOGU+ for(int i=0;i<nStartPos.length;i++) Km
$o@ { }Nd1'BVf // output.writeLong(nPos); >}\s-/ output.writeLong(fileSplitterFetch.nStartPos); f;Oh"Yt output.writeLong(fileSplitterFetch.nEndPos); "[!b5f3!I } v/9DD% An output.close(); !Ve0 :$ }
EQ ee5} catch(IOException e){e.printStackTrace ();} 1Acs0`3 catch(Exception e){e.printStackTrace ();} ?'Hd0)yZ } ^3BPOK[*gB jLM([t l)*(UZ" //读取保存的下载信息(文件指针位置) |Q%P4S"B? private void read_nPos() l cHf\~ { ZnRT$ l O try{
*Z^`H!& DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 5{oc int nCount = input.readInt(); }oA>0Nw$K nStartPos = new long[nCount]; JRw,${W nEndPos = new long[nCount]; KILX?Pt[7 for(int i=0;i<nStartPos.length;i++) U 7.k Yu { eG1V:%3 nStartPos = input.readLong(); `WN80d\)& nEndPos = input.readLong(); >5#}/G& } NLY=o@< input.close(); Lc5zu7ncg } (_"Zbw%cJy catch(IOException e){e.printStackTrace ();} VC/-5'_6 catch(Exception e){e.printStackTrace ();} h?p_jI } E&
i (T2c @;` 's +/Y2\s private void processErrorCode(int nErrorCode) oe] *Q { :`zO%h System.err.println("Error Code : " + nErrorCode); KD,3U/3 } #
:k= P O 5Wi a`n)aXU l //停止文件下载 !#_2 ![ public void siteStop() ~qj(&[U{c\ { ,c|MB bStop = true; O*GF/ R8B for(int i=0;i<nStartPos.length;i++) !IdVg $7 fileSplitterFetch.splitterStop(); uR
:EH.K
R%RxF=@ &TBFt; } Ba8=nGa4KY } Q&xH //负责部分文件的抓取 WM?-BIlT= **FileSplitterFetch.java W/bW=.d
Jd */ 9Z!n!o7D package NetFox; F0p=|W XDJE]2^52? 6T'UWh0S import java.io.*; H" `'d import java.net.*; 'k[qx} 38p"lT G9^`cTvv'8 public class FileSplitterFetch extends Thread { A6]X
aF M,_
$s, &{.IUg String sURL; //File URL Z8ea)_{# long nStartPos; //File Snippet Start Position G|f9l?p long nEndPos; //File Snippet End Position P0}{xq'k9v int nThreadID; //Thread's ID =yZq]g6Q boolean bDownOver = false; //Downing is over 3\@2!:> boolean bStop = false; //Stop identical &Y?t FileAccessI fileAccessI = null; //File Access interface 88v8lt;R iW(LD1~7 `!Z?F]):G public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException HvG %## { u_$4xNmQ this.sURL = sURL; dEtjcId this.nStartPos = nStart; ;6P>S4`w this.nEndPos = nEnd; hg" i;I nThreadID = id; Pgr2S I fileAccessI = new FileAccessI(sName,nStartPos);//定位 (T#$0RFq } 7/IL"
D Q}@t' kZz'&xdv'. public void run() {WrEe7dLy { 0fXMY-$I while(nStartPos < nEndPos && !bStop) K 77iv { G-T^1? c%/b*nQ(= >|A,rE^Ojt try{ |qn2b= URL url = new URL(sURL); W :]2Tp HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ]5"k%v| httpConnection.setRequestProperty("User-Agent","NetFox"); t<Yi!6 String sProperty = "bytes="+nStartPos+"-"; "jum*<QZz httpConnection.setRequestProperty("RANGE",sProperty); PiKP. Utility.log(sProperty); x^[,0?y2 6]b"n'G Gy/w #4xj InputStream input = httpConnection.getInputStream(); uKP4ur@1 //logResponseHead(httpConnection); " _2k3 y<Q"]H.CkQ w-pgtO|Us byte[] b = new byte[1024]; ce\d35x! int nRead; !6'N-b1 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Dhn7N8(LF! { UmWXv#q\l nStartPos += fileAccessI.write(b,0,nRead); /%& d: //if(nThreadID == 1) ^1.*NG8 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); m}wn+R } T06(Q[) Q
84t= D8wf`RUt Utility.log("Thread " + nThreadID + " is over!"); W]oD(eZ bDownOver = true; ae sk. //nPos = fileAccessI.write (b,0,nRead); a
~v$ bNu } xc#t8` catch(Exception e){e.printStackTrace ();} N x&/p$d } ~|}] } B[@q.n 9O3 #d m>vwpRBOA //打印回应的头信息 .Z[4:TS public void logResponseHead(HttpURLConnection con) R|C` { +<1 |apS1 for(int i=1;;i++) qS+;u`s { Qjfgxy] String header=con.getHeaderFieldKey(i); rQimQ|+ if(header!=null) K|Sq_/#+U //responseHeaders.put(header,httpConnection.getHeaderField(header)); *,$5EN Utility.log(header+" : "+con.getHeaderField(header)); >8(i;)(3 else 4]U=Y>\Sr break; _cs(f<>oCO } /9R0}4i7 } M(I%y0 XvaIOt>A }i~k:kmV public void splitterStop()
juOStTq< { !Ap5Uwd bStop = true; xx`YBn~" } *lSu=dk+ LIcc0w3 [LnPV2@e } fmz"Zg9= 3@V?L:J A7X
a /* :'DyZy2Fd **FileAccess.java {}YA7M:L *//文件访问(定位,写) Da(k>vR@4 package NetFox; TRm#H$ import java.io.*; ZW [&7[4 h:8P9WhWF %b^4XTz public class FileAccessI implements Serializable{ srv4kodj 44ty,M3 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 _X4Y1zh RandomAccessFile oSavedFile; S $p>sItO long nPos; eyMn! a a* cWj}u ^+P.f[ public FileAccessI() throws IOException $ZI] { o`S``?`^)^ this("",0); E#KZZ lbx } r
W`7<3 5b}w S&!(h
{O public FileAccessI(String sName,long nPos) throws IOException jKml:)k { ?kO.>o oSavedFile = new RandomAccessFile(sName,"rw"); g5nJ0=9 this.nPos = nPos; +LRKS oSavedFile.seek(nPos); be8T<F } 0/su` dC({B3#e{ qf x*a88 public synchronized int write(byte[] b,int nStart,int nLen) sGu.G { xT+_JT65 int n = -1; iM<$
n2t try{ B5z'Tq1 oSavedFile.write(b,nStart,nLen); ?sk>Mzr n = nLen; f`hZb } "A}sD7xy9 catch(IOException e) 6'^E
],:b { ;TJpD0 e.printStackTrace (); n*7^lAa2 } +c~&o83[ zTa5N x:FZEyalG return n; 9w=7A>.U } XjN4EDi+E KmNnW1T |HmY`w6*z } PMytk`<`zw cHvm ,H{9`a#+: /* c7XBZ%D **SiteInfoBean.java &+#5gii1i */ R&Lqaek&W package NetFox;
mWv$eR KkCGL*]K |cU75
S 1 public class SiteInfoBean { C<D$Y,[w o`iA& gq?7O< private String sSiteURL; //Site's URL fd
)v{OC private String sFilePath; //Saved File's Path f'=u`*(b7 private String sFileName; //Saved File's Name 8%,#TMOg private int nSplitter; //Count of Splited Downloading File R/oi6EKv d1cp=RbC [Qnf]n\FJ public SiteInfoBean() E2dM0r<] {//nSplitter的缺省值为5 Z^|N]Ej //default value of nSplitter is 5 ~X3g_<b_8 this("","","",5); F}}!e.>c } $2a"Ec!7 tDRR 3=9pX ]6e(-v!U public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Jc#D4e1# { i.t%a{gL sSiteURL= sURL; G!6b
)4L- sFilePath = sPath; &[[r| sFileName = sName; Nm"P8/-09 this.nSplitter = nSpiltter; NBPP?\1 !i"zM} hoq2zDjD } c& ;@i$X( ..JRtuM-v OyO]; Yk public String getSSiteURL() Rn?JMM] { FaeKDbLJr return sSiteURL; iN&oSpQ } vaB ql(?'2 4
.
7X*1 /
dJz?0 public void setSSiteURL(String value) hVF^"$ { :IZAdlz[@ sSiteURL = value; yh
E% X } |,$&jSe PuJ3#H
T %+l95Dv1 public String getSFilePath() )k Wxp {
~z:]rgX return sFilePath; q\@Zf} } ]VjvG}; `E$vWZq} dx@dnWRT, public void setSFilePath(String value) &G"s!: { /0/ouA>+ sFilePath = value; 3Q$4`p; } ;5ki$)v" =Ydrct Tdcc<T
public String getSFileName() gML8lu0) { gxl7jY return sFileName; $E@n;0P } E<jajYj Lng. X8D GNJ/|9 public void setSFileName(String value) M 2hZ' { un 5r9 sFileName = value; ~LS</_N } iE'' >Z T_S3_-|{== v*!N}1+J public int getNSplitter() +;~N; BT { "s0,9;
} return nSplitter; 6Hnez @d } Dz0D ^(;V _8.TPB]no 5!?5S$> public void setNSplitter(int nCount) e6taQz@} { "B{3q`( nSplitter = nCount; Onq^|r's& } `PbY(6CF } DO(};R%= 8_}t,BC oMEW5.VX /* 0''p29 **Utility.java O]tR~a */ )jOa!E" package NetFox; 66&uK| Kzrd<h]`) uP* kvi:e public class Utility { RxqNgun@ vQ}ZfP x#`p.sfVo public Utility() :xr^E] { 7GO9z<m) n0lOq %4nf(|8n } :XhF:c[.: Es+I]o0K //线程睡眠 (?Mn_FNE| public static void sleep(int nSecond) 1L*[!QT4 {
b WNa6x try{ Sh(ys*y> Thread.sleep(nSecond); }>6e-]MHfR } 'd~(=6J catch(Exception e) VZt%cq { Wo
"s ;Z e.printStackTrace (); S' $; } CK[8y& } 1gV?}'jq 3*<@PXpK& //日志 \1Y|$:T/ public static void log(String sMsg) kf'(u..G { D>y5&` System.err.println(sMsg); @/^<9 } 8r(awp \oWpyT _ `D(V_WZ public static void log(int sMsg) u:APGR^ { X:UlL"G System.err.println(sMsg); ]owgsR } |yk/iO( } )pl5nu#< j;`pAN(' b,+Sa\j)( /* av!;k2" **TestMethod.java C4(xtSJSd! */ q\<l"b z package NetFox; %nkP" Z# pL,XHR@Iv u9 &$`N_G public class TestMethod { QQW}.>N :6(\: f,yl'2{ public TestMethod() dE"_gwtX { ///xx/weblogic60b2_win.exe uaO.7QSwN try{ w8X5kk
SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); y-26\eY^P //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); l+6c|([ SiteFileFetch fileFetch = new SiteFileFetch(bean); 8e-nzc,] fileFetch.start(); A8.noV } +UDt2 catch(Exception e){e.printStackTrace ();} {`D]%eRO ~Y`ys[Z m Ibz9juY } wKpBH} Q$ew.h N~flao^ public static void main(String[] args) Nqj@p<y/q { ^<!R%"o- new TestMethod();
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