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/* XZ/cREz^s **SiteFileFetch.java hr
g'Z5n */ ;]2d%Qt package NetFox; Nh6!h% import java.io.*; MnptC 1N import java.net.*; >}86#^F \K:?#07Wj4 hP
jL public class SiteFileFetch extends Thread { ~e+pa|lO EsLtC5] `L.nj6F SiteInfoBean siteInfoBean = null; //文件信息Bean Sqla+L* long[] nStartPos; //开始位置 {%X[Snv long[] nEndPos; //结束位置 M|7{ZE`Y FileSplitterFetch[] fileSplitterFetch; //子线程对象 2*zMLI0. long nFileLength; //文件长度 nB%[\LtZ? boolean bFirst = true; //是否第一次取文件 }]j#C boolean bStop = false; //停止标志 IZxr;\dq6
File tmpFile; //文件下载的临时信息 U@)WTH6d DataOutputStream output; //输出到文件的输出流 7#9fcfL CW~c<," //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) }`uq:y public SiteFileFetch(SiteInfoBean bean) throws IOException RNX>I,2sh { CbT ;#0 siteInfoBean = bean; [ _&z+ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 2c5)pIVEy tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 8ZDWaq8^2N if(tmpFile.exists ()) Qs_]U { |PLWF[+t8 bFirst = false; vz)zl2F5sY read_nPos(); ^i17MvT'
} #LG<o3An else 1(
]{tF { H(Ad"1~.# nStartPos = new long[bean.getNSplitter()]; _(KzjOMt nEndPos = new long[bean.getNSplitter()]; {)-3g~ } q}J Eesf Vc
"+|^ - 4S4I g"D:zK) } 37|EG A*? Qm }9L;|ul6 public void run() 49 1 1 { K )9f\1\ //获得文件长度 V_T~5%9Fy //分割文件 qWI8 >my11 //实例FileSplitterFetch *BQy$dfE //启动FileSplitterFetch线程 Aj@t*3 //等待子线程返回 a.SxMF try{ v79\(BX if(bFirst) M V~3~h8 { [S[@ Q[zP@ nFileLength = getFileSize(); VqdR if(nFileLength == -1) +\MGlsMK@. { r7*'s System.err.println("File Length is not known!"); _Ns_$_ } 6$p6dmV| else if(nFileLength == -2) IPlkv{^ { Rhh.fV3 System.err.println("File is not access!"); =OooTZb:x- } :"Kr-Hm` else o>\epQt~/p { rd}|^&e!Dy for(int i=0;i<nStartPos.length;i++) ,}$[;$ye {
lmB+S nStartPos = (long)(i*(nFileLength/nStartPos.length)); U p: M[S
} Ba;tEF{X for(int i=0;i<nEndPos.length-1;i++) r1|;V~a$~ { ~
6Hi"w nEndPos = nStartPos[i+1]; ]Hrw$\Ky } ?uqPye1fc nEndPos[nEndPos.length-1] = nFileLength; o1u?H4z } 4G=KyRKh } :Pi=" I sB=G-s );ZxKGjc4 //启动子线程 i
M!=/ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; MH_3nN for(int i=0;i<nStartPos.length;i++) uJL[m(G { Z~DR,: fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), }&IOBYHVDo siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), rFYw6&;vOi nStartPos,nEndPos,i); YW^sf,zQ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); DsGtc<l% fileSplitterFetch.start(); EY[J;H_b } R(DlJ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), $jv/00:& siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); IHNl`\Le // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 1WLaJ%Fv nEndPos = " + nFileLength); dL>8| // fileSplitterFetch[nPos.length-1].start(); =^gZJ@ 2k"!o~s^ z<n&P7k5j //等待子线程结束 "TePO7^m //int count = 0; SFa~j)9'n //是否结束while循环 g;G.uF& boolean breakWhile = false; ,$;pLjo6 r
WPoR/M @ykM98K while(!bStop) I0C$ { [V.#w|n write_nPos(); )nA fT0()0 Utility.sleep(500); ^Euqy,8} breakWhile = true;
+`Ypc OG}m+K&< ($Ck5`_MK for(int i=0;i<nStartPos.length;i++) y4~;H{! { S%k](\7! if(!fileSplitterFetch.bDownOver) Ce_ES. { B&c*KaK;~ breakWhile = false; 44(l1xEN+ break; X2hyxTOp } uvj`r5ei } X\'+);Z if(breakWhile) K,L break; <GRrw MLn \b0 :I^I=A%Pe( //count++; B]|"ePj- //if(count>4) `f+l\'.s // siteStop(); e`Vb.E) } AH#klYK w-9fskd6e ([L5i&DT System.err.println("文件下载结束!"); OMVK\_oXo } UFY_.N~ catch(Exception e){e.printStackTrace ();} 7Q3a0`Iq } k874t D .l(t\BfE~ /4PV<[
:_ //获得文件长度 86N"EuH$ public long getFileSize() x7l3&;yDv { yUzpl[*e^o int nFileLength = -1; S,~DA3 try{ RkuPMs
Hw; URL url = new URL(siteInfoBean.getSSiteURL()); U k*HRudt HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); l
d4#jV ei httpConnection.setRequestProperty("User-Agent","NetFox"); -<Zs7( l2LUcI$ x ?A7_&=J% int responseCode=httpConnection.getResponseCode(); dwAFJhgh if(responseCode>=400) N++jI( { P(#by{s processErrorCode(responseCode); 7Ta",S@m return -2; //-2 represent access is error m?Qr)F_M } 3>t^Xu~ ME%W,B.|"s ;.4A,7w# String sHeader; (( D*kd" o:irwfArv ,3tcti~sZ for(int i=1;;i++) A$]&j5nh| { \$]
V#@F //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ,Bg)p_B //Utility.log(in.readLine()); qFD#D_O6 sHeader=httpConnection.getHeaderFieldKey(i); kxp, ZP if(sHeader!=null) ZW0gd7Wh { *.]M1 if(sHeader.equals("Content-Length")) b7_uT`< { ToWtltCD nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); $<(FZb= break; Zw`vPvb! } ;>duY\$< } !$i*u-%4 else <p74U( V break; !K~:crUV|S } tuF
hPqe { } %@jL?u catch(IOException e){e.printStackTrace ();} `Z:5 E catch(Exception e){e.printStackTrace ();} <cn{S` b=Y:`&o=[ ~:\QC Utility.log(nFileLength); dE[nPtstb &eHhj9 W%xg;uzp return nFileLength; I*Q^$YnM } N5%zbfKM 9j;L- ~;*SW[4 //保存下载信息(文件指针位置) SXW8p>1Jw private void write_nPos() (!@
Q\P { :DlgNR`bq try{ t<|S7EqIL output = new DataOutputStream(new FileOutputStream(tmpFile)); &(]@L\A output.writeInt(nStartPos.length); 1dy>a=W for(int i=0;i<nStartPos.length;i++) z!r-g(^G { g5
J[ut // output.writeLong(nPos); z"@yE*6 output.writeLong(fileSplitterFetch.nStartPos); IP]"D" output.writeLong(fileSplitterFetch.nEndPos); [8o!X) } 5D32d1A output.close(); Wp[R$/uT } ` 5.PPI\h2 catch(IOException e){e.printStackTrace ();} UE[5Bw?4X catch(Exception e){e.printStackTrace ();} qx $-% P } k9ThWo/#u 0~5'O[NhF ?x|8"*N //读取保存的下载信息(文件指针位置) EN =oA P private void read_nPos() 0=2D90 { v ;q<h try{ 8Q%rBl. DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); q-g3! int nCount = input.readInt(); LXIQpD,M nStartPos = new long[nCount]; %$)[qa3 nEndPos = new long[nCount]; 4nfpPNt for(int i=0;i<nStartPos.length;i++) fJb<<6C { 'ow`ej nStartPos = input.readLong(); i9qn_/<c nEndPos = input.readLong(); =2
3H/ } nnV(MB4z1 input.close(); @C]Q;>^| } }w0>mA0=H catch(IOException e){e.printStackTrace ();} F3aOKV^ catch(Exception e){e.printStackTrace ();} :+9KNyA } f#s
/Ycp+ iG\] $\0%"S private void processErrorCode(int nErrorCode) :3z`+5Y* { {c'2{`px 5 System.err.println("Error Code : " + nErrorCode); 6[dLj9 G% } F
;o ^. k}5Sz SIBNU3;DL //停止文件下载 oJcDs-! public void siteStop() :
"|M { V'XmMn)! bStop = true; I.f)rMl+h
for(int i=0;i<nStartPos.length;i++) +J^-B}v fileSplitterFetch.splitterStop(); z$VA]tI( yEnurq%J 5Iv3B|u } 2{v$GFc/ } 1keH 1[ //负责部分文件的抓取 FCC9Ht8U? **FileSplitterFetch.java }/ p>DMN */ 9t.u9C=!F package NetFox; QJL%J DS@ZE Q`F lG\6z"K import java.io.*; tSr.0'CE import java.net.*; /'V(F* g ,cbCt HC4vet public class FileSplitterFetch extends Thread { "k)}qI{ Osb#<9{} "ooq1
0P String sURL; //File URL U>b mCK2 long nStartPos; //File Snippet Start Position )575JY `6K long nEndPos; //File Snippet End Position i?.7o*w8 int nThreadID; //Thread's ID 8X6F6RK6,1 boolean bDownOver = false; //Downing is over CCCd=s. boolean bStop = false; //Stop identical W6_~.m"b FileAccessI fileAccessI = null; //File Access interface 0Q81$% @< XYJ7k7zc+Y rOt`5_2f public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException C%$:Oq { 7oPLO(0L this.sURL = sURL; Y#>'.$(Az this.nStartPos = nStart; C@{#OOa this.nEndPos = nEnd; |i)7jG< nThreadID = id; hL1q9% fileAccessI = new FileAccessI(sName,nStartPos);//定位 cs]N%M^s } OF$0]V [Yo3=(7J w4m-DR5 public void run() 3{gD'y4j { *SW.K{{ while(nStartPos < nEndPos && !bStop) ?-40bb { |\yVnk!c V Ae@P q
.[hwm try{ %^e~;i=2 URL url = new URL(sURL); [0M2`x4` HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); O~E6"vQ httpConnection.setRequestProperty("User-Agent","NetFox"); [D8u.8q String sProperty = "bytes="+nStartPos+"-"; Q}pnb3J>T httpConnection.setRequestProperty("RANGE",sProperty); ' }G!D Utility.log(sProperty); ^hG
Y,\K9 _0~WT ]}KoW?M InputStream input = httpConnection.getInputStream(); <r6e23 //logResponseHead(httpConnection); av-l_iE {s=n "*Qp) (zW;&A byte[] b = new byte[1024]; E5-f{Qc int nRead; dQ&S&SW while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) @8IYJ{= { .AEOf0t nStartPos += fileAccessI.write(b,0,nRead); ZG=B'4W //if(nThreadID == 1) 'S_kD! BO // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); wz!a;]agg } ^tWt"GgC -8sm^A>C u/`jb2eEU: Utility.log("Thread " + nThreadID + " is over!"); I)
mP? bDownOver = true; ~i`@ //nPos = fileAccessI.write (b,0,nRead); W<J".2D } [x`trypg catch(Exception e){e.printStackTrace ();} r?{$k3Vl } KmuE#Ia } @,Je*5$o" d>ltL`xn WM& k //打印回应的头信息 x?hdC)#DWI public void logResponseHead(HttpURLConnection con) gv&%2e} _ { jy=dB-& for(int i=1;;i++) #[.vfG { |K},f, String header=con.getHeaderFieldKey(i); F-!,U)
if(header!=null) 8.Q;o+NU //responseHeaders.put(header,httpConnection.getHeaderField(header)); E0K'|* Utility.log(header+" : "+con.getHeaderField(header)); s|7(VUPL else 'r KDw06/ break; em^|E73 } %O5
k+~9 } LnQm2uF ]X:{y&g( UlBg6 public void splitterStop() nC^|83 { a );> bStop = true; EJ$- } `v*UY .&:GOD GA19=gow } bM]\mo>z< N3P!<J/tc [4)q6N5`f /* gTz66a@i **FileAccess.java &!I^m *//文件访问(定位,写) xkv2#"*v package NetFox; wJ_E\v P import java.io.*; )9~1XiS, OrXx0Hn "%O,*t public class FileAccessI implements Serializable{ 7aH E:Dnwp liEb(<$a //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 DlB"o. RandomAccessFile oSavedFile; hZ0p /Bdv long nPos;
FA 1E`AdU LOY+^ SK2nxZOH public FileAccessI() throws IOException qXPT1%+)y { \cq
gCab/2 this("",0); neQ2k=ao } z7+y{-{Z 5t6!K?} b .9]b public FileAccessI(String sName,long nPos) throws IOException ;6N@raP7 { S>~QuCMY oSavedFile = new RandomAccessFile(sName,"rw"); qzv$E;zAl this.nPos = nPos; uq;,h46ki oSavedFile.seek(nPos); <y${Pkrj } OtuOT=% 0mB]*<x8 6l|pTyb1 public synchronized int write(byte[] b,int nStart,int nLen) ajy.K'B* { -#]?3*NO int n = -1; pm<zw- try{ Lu&2^USTO oSavedFile.write(b,nStart,nLen); O@U[S.IK n = nLen; ;^)(q<] } k[oU}~*U+ catch(IOException e) YH`/;H=$G/ { Ba/Z<1) e.printStackTrace (); n50XGv } ZOl
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r /* Sc
"J5^ **SiteInfoBean.java =p>"PqJ/7n */ "m3:HS package NetFox; >'eOzMBn \ief [ Z~o*$tF/ public class SiteInfoBean { Fz7(Kuc b7>^w<ki WAiEINQ^) private String sSiteURL; //Site's URL JsOPI] private String sFilePath; //Saved File's Path +F ~;Q$T private String sFileName; //Saved File's Name ,-Fhb~u private int nSplitter; //Count of Splited Downloading File "iE9X.6NMu D"fE )@Q@Y s}A)sBsaP3 public SiteInfoBean()
GqhnE> {//nSplitter的缺省值为5 j.4oYxK!s/ //default value of nSplitter is 5 +=%13cA*U this("","","",5); P%>? O :a } pmXx2T#= B+|E|8" B M{GSX public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) i%H_ua { CtVY;eG sSiteURL= sURL; 9BB<.
p sFilePath = sPath; 3ydOBeY sFileName = sName; ^[XxE Lx this.nSplitter = nSpiltter; OxX{[|!` u3kK!2cdP I jN3 jU } \Q{@AC<?i :7p0JGd !cw<C* public String getSSiteURL() 0Mt2Rg} { B{!)GZ(} return sSiteURL; NAhV8 } ed*Cx~rT 'n I2RX !*u5HVn public void setSSiteURL(String value) @lAOi1m,, { b].:2 sSiteURL = value; H[V^wyi'z } hNc;,13 i0,{*LD%^ ?ECmPS1 public String getSFilePath() T^NY|Y/ { ,5'LbO- return sFilePath; 8rXq-V_u } &/R@cS6}' C.s{& @/yRE^c public void setSFilePath(String value) (?xGlV`n { qf+jfc(Iby sFilePath = value; %([$v6y } OYC4iI JU:!lyd WKX5Dl public String getSFileName() cO<]%L0 { 57IrD*{ return sFileName; b$[_(QUw } (.P;VH9R\ y&9S+ _)2.#L public void setSFileName(String value) zc]F { O/gok+K sFileName = value; QL}5vSl } Yqmx] 7Y4 #NNj#
>joGGT public int getNSplitter() O;f^'N { 4C[,S|J return nSplitter; fOJk+?
c } Rp A76ug Nv*x^y] >OE.6)'Rm public void setNSplitter(int nCount) [Z,AquCU( { u_@%}zo?5* nSplitter = nCount; yk#yrxM } qyUcjc%[ } p*!@z|F>U YS?P A# NmST1pMk /* = Ii@-C **Utility.java i2.y)K) */ Zqd&EOm package NetFox; ,Ng3!2&$e K%qunjv {d}-SoxH public class Utility { I"Ji_4QV /`hr) ' F`*(\# public Utility() s6Bt)8A { NUH;GMj,, p1v:X? 0-0 )E&2 } #"ayq,GC< |/arxb& //线程睡眠 aen(Mcd3bg public static void sleep(int nSecond) nX5*pTfjL3 { &Xe r#6~ try{ tA#X@HIE Thread.sleep(nSecond); p$f#W } (J.(Fl>^ catch(Exception e) KwPJ0
]('_ { =t@m: e.printStackTrace (); ~0ZEnejy } D\(,:_ge } h |=^@F_\` \*LMc69
//日志 n8[sR;r5f public static void log(String sMsg) |rdG+> { &-<"HW System.err.println(sMsg); wuzz Wq } }K~JM1(26 KblOP{I kjaz{&P public static void log(int sMsg) n#z^uq|v { |GK [I System.err.println(sMsg); {N)\It } :1_hQeq } =e$
#m; zIF &ZYP [w=x 0J& /* bQXxb(^ **TestMethod.java 6$ IXER */ t
vk^L3=< package NetFox; JsnavI6 bIp;$ZHy`K `6~*kCj5 public class TestMethod { yel>-=Vn CSr{MF`]e (ZShh y8g public TestMethod() pal))e!B { ///xx/weblogic60b2_win.exe FVY,CeA. try{ W U<#_by
g SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); <$?:| //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); $k'f)E SiteFileFetch fileFetch = new SiteFileFetch(bean); 3Xd+>'H fileFetch.start(); NnHwk)' } R%#c~NOO catch(Exception e){e.printStackTrace ();} iM8hGQ` DIk$9$"<x ljiq +tT } ^]U2Jd bx6@FKns} 7[D0n7B@ public static void main(String[] args) C{!Czz.N { *D AgcB new TestMethod(); S
BFhC } Y\+^\`Tqu } _
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