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/* y,F|L?dIq **SiteFileFetch.java #I-qL/Lm */ gk^`-`P package NetFox; 3d;w\#?L; import java.io.*; 1,Uf-i import java.net.*; C'&t@@: _08y; _S b/g~;| < public class SiteFileFetch extends Thread { XTKAy;'5 f1wwx|b%. O|e/(s?$ SiteInfoBean siteInfoBean = null; //文件信息Bean 3FQXp long[] nStartPos; //开始位置 N
6t `45 long[] nEndPos; //结束位置 A4IPd FileSplitterFetch[] fileSplitterFetch; //子线程对象 @~j--L long nFileLength; //文件长度
o%3VE8- boolean bFirst = true; //是否第一次取文件 j\%m6\{n| boolean bStop = false; //停止标志 rhH !-`m File tmpFile; //文件下载的临时信息 Sd?+j;/" DataOutputStream output; //输出到文件的输出流 cS;O]>/5 feA(Rj //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) +V,Ld&r public SiteFileFetch(SiteInfoBean bean) throws IOException Uv|^k8( { E>L_$J -A- siteInfoBean = bean; pcO{%]?p //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); MngfXm tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); dx)v`.%V if(tmpFile.exists ())
3F\UEpQ { w@ $_2t bFirst = false; `XK+Y read_nPos(); &?0hj@kd~ } wrEYbb else 2`cVi"U { W't.e0L<6 nStartPos = new long[bean.getNSplitter()]; &aWY{ ?_ nEndPos = new long[bean.getNSplitter()]; IfF&QBi } &Tn7 40Z/;,wp{ *rmwTD" U\`yLsKvH` } uTIl} N tg%C>O 1IeB_t public void run() InfUH8./t { idGhWV' //获得文件长度 tbq_Rg7s //分割文件 >YP]IQ //实例FileSplitterFetch &k0c|q] //启动FileSplitterFetch线程 gt:Ot0\7 //等待子线程返回 gLQbA$gB try{ P#x]3j] if(bFirst) *h Bo,
{ d
A' h7D nFileLength = getFileSize(); L}.V`v{zc if(nFileLength == -1) 5:x .< { #7dM % System.err.println("File Length is not known!"); BGZvgMxLJ } /u N3"m5i else if(nFileLength == -2) QAK.Qk?Qu { R WK##VHK System.err.println("File is not access!"); Dwi[aC+k } f')3~)" else iT"H%{+~ { liG3
for(int i=0;i<nStartPos.length;i++) x|IG'R1:Y { Bg0 aLU)[ nStartPos = (long)(i*(nFileLength/nStartPos.length)); & wG3RR| } jHWJpm( for(int i=0;i<nEndPos.length-1;i++) _<P~'IN+n { aShZdeC*f nEndPos = nStartPos[i+1]; ^><B5A>; } ,O}2LaK.O nEndPos[nEndPos.length-1] = nFileLength; &m>txzo } ]Zz<9zix } (!&g (l; 26\*x 4,g3 c //启动子线程 #$(wfb9 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; z0m[25FQG for(int i=0;i<nStartPos.length;i++) |
QI-gw { 2\1\Jn#q fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 4!r>
^a siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), q'p>__Ox nStartPos,nEndPos,i); dwt<s[k Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 4uUR2J fileSplitterFetch.start(); )B'U_* } #pz{, // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), m
K@a7fF? siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); G$HLta // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", sw@*N nEndPos = " + nFileLength); S.Fip_ // fileSplitterFetch[nPos.length-1].start(); ]0wmvTR 3tTz$$-# QU{\ClW/? //等待子线程结束 lt&30nf= //int count = 0; I NE,/a= //是否结束while循环 ~IE5j,SC boolean breakWhile = false; TAu*lL(F
YErn50L 7F{=bL while(!bStop) WsCzC_'j. { ^2PQ75V@. write_nPos(); +6*
.lRA Utility.sleep(500); AH(O"v` breakWhile = true; b!'
bu .iL_3:6f
K{00 V# for(int i=0;i<nStartPos.length;i++) WxS=Aip' { 7#R&
OQ if(!fileSplitterFetch.bDownOver) S-:7P.#Q { 7TQh'j breakWhile = false; S hM}w/4 break; ;,h*s,i } s!E-+Gw } =9;jVaEMJL if(breakWhile) 9h6xl i break; Pk; 9\0k7 K,IPVjS =c8U:\0 //count++; r_Rjjo //if(count>4) rS
4'@a // siteStop();
ka&-tGg } uXNf)?MpA /m;w~-N Vy:ER System.err.println("文件下载结束!"); */L;6_ } NW9k.D% catch(Exception e){e.printStackTrace ();} [vaG{4m } ^IGTGY]s A{E0 a:v Y4Z?`TL //获得文件长度 Xklp6{VH9 public long getFileSize() NwG&uc+Q { [VPqI~u5) int nFileLength = -1; ytmlG% try{ ~^"cq
S( URL url = new URL(siteInfoBean.getSSiteURL()); w
I@
lO\ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); V_(?mC httpConnection.setRequestProperty("User-Agent","NetFox"); Iq\sf-1E XY|-qd}A b['TRYc=: int responseCode=httpConnection.getResponseCode(); ):+H`Hcm if(responseCode>=400) k-
sbZL { " I@Z:[=2 processErrorCode(responseCode); V]PTAhc return -2; //-2 represent access is error $XI5fa4Tt } pKMf#)qm "7)F";_(^ ryx<^q String sHeader; @ec QVk _V{WXsOx( =dX*:An for(int i=1;;i++) /:e|B;P`k { {F
k]X#j //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); F,O+axO
ja //Utility.log(in.readLine()); @Ds? sHeader=httpConnection.getHeaderFieldKey(i);
+X;6%O; if(sHeader!=null) DI}h?Uf , { L#u6_`XJ+ if(sHeader.equals("Content-Length")) RkLH}`# { Q$,8yTM nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); >CPkL_@VZ= break; KX<RD|= } jVRd[ } }
2)s% else D2!ww{t break; !4jS=Lhe> } fV}\ } %e%nsj6 catch(IOException e){e.printStackTrace ();} JZL!(>tI catch(Exception e){e.printStackTrace ();} @;<w"j`r ]jHB'Y Y=3Y~ Utility.log(nFileLength); 1}8e@`G0.] _ksp;kH?) v!F(DP.)Z return nFileLength; V6$v@Zq } .<42-IEc p]+W1 v}V! lGLZIp //保存下载信息(文件指针位置) X\%],"9% private void write_nPos() wOi>i`D& { ydns_Z try{ #zy,x output = new DataOutputStream(new FileOutputStream(tmpFile)); _-8,}F}W#s output.writeInt(nStartPos.length); g'Xl>q for(int i=0;i<nStartPos.length;i++) c=
a+7> { T>uLqd{hH // output.writeLong(nPos); )cqhbR output.writeLong(fileSplitterFetch.nStartPos); )edM@beY_ output.writeLong(fileSplitterFetch.nEndPos); }(tGjx] } yJp&A output.close(); 6!"15dPN } ZTmdS catch(IOException e){e.printStackTrace ();} Z@ws,f^e catch(Exception e){e.printStackTrace ();} v8%]^` ' } e#'`I^8l KFV]2mFN -~(0:@o ; //读取保存的下载信息(文件指针位置) u8<=FV3 private void read_nPos() x:2[E- { 9i`LOl:; try{ tIr66'8 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 3mJHk<m8T int nCount = input.readInt(); ]owH [wvX nStartPos = new long[nCount]; r>)\"U# nEndPos = new long[nCount]; >Le
mTr for(int i=0;i<nStartPos.length;i++) Oy|9po { e8lF$[i nStartPos = input.readLong(); Xj-3C[8@ nEndPos = input.readLong(); \:=Phbn } &e rNVD5o input.close(); 5;^8wh( } 9M7P]$^ catch(IOException e){e.printStackTrace ();} ev?>Nq+Z catch(Exception e){e.printStackTrace ();} '[-/Xa[' } ttw@nv%
@ yQx>h6 ;:!LAe
private void processErrorCode(int nErrorCode) #SqOJX~Q { 9xKFX|*$ System.err.println("Error Code : " + nErrorCode); XW#4C*5?d } Lw#hnLI. z H \*v' e.jgV=dT- //停止文件下载 Z?x]HB`r public void siteStop() {[9^@k { ZbGyl}8ua bStop = true; isd[l-wAmf for(int i=0;i<nStartPos.length;i++) LTY.i3
fileSplitterFetch.splitterStop(); R#ZDB]2 Yj"UD:p X!
]~]%K$y } wk/->Rz } ry<
P LRN //负责部分文件的抓取 hW},% **FileSplitterFetch.java 7 Ow7| */ =0:hrg+Zgx package NetFox; ~xJD3Qf OS9v.pz [)Ge^yI7 import java.io.*; };+s0:H import java.net.*; zyR pHM$E C}>)IH YG8oy!Zl public class FileSplitterFetch extends Thread { zV&3l9?U 9e=*jRs]l^ PT4`1Oy}/1 String sURL; //File URL =['ijD4TW long nStartPos; //File Snippet Start Position UiSc*_N" long nEndPos; //File Snippet End Position ~8X'p6 int nThreadID; //Thread's ID kU
Flp boolean bDownOver = false; //Downing is over ec0vg.>p boolean bStop = false; //Stop identical ZRHTvxf FileAccessI fileAccessI = null; //File Access interface hB.dqv]^ j;y|Ys)I c1<g!Q&E public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 7/1S5yUr| { ?~K2&eo this.sURL = sURL; P:=ADW c this.nStartPos = nStart; fr?eOigbl this.nEndPos = nEnd; 'I~dJEW7 nThreadID = id; %q Q(@TG fileAccessI = new FileAccessI(sName,nStartPos);//定位 4mAtYm } %G@aZWk
Sa _SaK]7}m! a9I8WQ public void run() meL'toaJdQ { "+WR[-n>\ while(nStartPos < nEndPos && !bStop) /7#&qx8 { ^
UzF
nW@a L8G4K) e)7)~g54 try{ cm3Y!p{p" URL url = new URL(sURL); 'SieZIm) HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); st2>e1vg httpConnection.setRequestProperty("User-Agent","NetFox"); e&5K]W0{ String sProperty = "bytes="+nStartPos+"-"; hJ<2bgQo httpConnection.setRequestProperty("RANGE",sProperty); @CmxH(-i- Utility.log(sProperty); {2x5
V#6 B<R-|-# hmH$_YP} InputStream input = httpConnection.getInputStream(); qWFg~s#+ //logResponseHead(httpConnection); (+_J0i t vy#(|[pL{ f+6l0@K2 byte[] b = new byte[1024]; GCKl[<9* int nRead; US|vYd}u+ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 0o]K6b { >+#[O" nStartPos += fileAccessI.write(b,0,nRead); JW\"S //if(nThreadID == 1) "Pc,+>vh // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); =I(s7=Liu } hvyN8We 6&Dvp1`m a)1,/:7' Utility.log("Thread " + nThreadID + " is over!"); b {5|2&= bDownOver = true; MUrY >FYgx //nPos = fileAccessI.write (b,0,nRead); 2z\F m/Z. } b{rmxtx catch(Exception e){e.printStackTrace ();} RtL<hD } L@Z
&v'A } 4.'EEuRw\} + LwoBn>6 D$cMPFa2Nt //打印回应的头信息 /v{[Z&z public void logResponseHead(HttpURLConnection con) *eP4dGe& { o zYI/b^ for(int i=1;;i++) >{S $0D { l.x }I"tf String header=con.getHeaderFieldKey(i); i[pf*W0g if(header!=null) /aqN` //responseHeaders.put(header,httpConnection.getHeaderField(header)); EVFfXv^ Utility.log(header+" : "+con.getHeaderField(header)); (UZ*36@PJx else qt(:bEr^6b break; 8ilbX)O } IdxTo Mr } 4AYc8Z#' Xoy 1Gi? Z?.*.<"Sj public void splitterStop() v+#j> { dYd~9 bStop = true; WDdi}i>2 } E/ZJ\@gzD ]eW|}V7A: /wE_eK. } }|Tg_+ LrMFzd}_O -y?Z}5-rs /* (NdgF+'= **FileAccess.java !yX<v%>_0 *//文件访问(定位,写) >U<nEnB$? package NetFox; yk<jlVF$j import java.io.*; N o(f0g. 2.D!4+& \&5@ yh public class FileAccessI implements Serializable{ nZCpT
|M5 ]$*{< //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 1H=wl=K RandomAccessFile oSavedFile; Jche79B long nPos; o%%x'uC =h::VB}Lv &ZN'Ey? public FileAccessI() throws IOException 0:'jU { >iH).:j this("",0); Hi_Al,j: } RYl3txw _[i=TqVmf !rg0U<bO! public FileAccessI(String sName,long nPos) throws IOException @>2rz { V6MT> T oSavedFile = new RandomAccessFile(sName,"rw"); 93IOG{OAY this.nPos = nPos; 4AOS}@~W oSavedFile.seek(nPos); sBtG}Mo) } ~'J =!Xy LGRO En<*d P0 ltN public synchronized int write(byte[] b,int nStart,int nLen) )O@^H { Gv,92ny!| int n = -1; i @9Qb try{ I"sobZ` oSavedFile.write(b,nStart,nLen); W}k?gg= n = nLen; P}9Y8$Y>U } &JhIn%=- catch(IOException e) p@8krOo` { qM>OE8c#/ e.printStackTrace (); {O kik}Oh } :Q
?J}N 5**5b9bj-9 d]ZC8<`w return n; *{dD'9Bg } ZqbM%(=z(` 1mn$Rh&dO C}=_8N } h2|vB+W- 9U9c"'g V,XP&,no\j /* Z#Zzi5< **SiteInfoBean.java 4zqE?$HM' */ Z"~6yF package NetFox; ,}IER ]2\2/~l 39T&c85 public class SiteInfoBean { 3TiXYH 7
Mki?EG O&gwr private String sSiteURL; //Site's URL "UoCT7X private String sFilePath; //Saved File's Path )fd-IYi-3 private String sFileName; //Saved File's Name Rhv".epz private int nSplitter; //Count of Splited Downloading File j+13H+dN Fm$n@RbX L2>?m`wp public SiteInfoBean() VIz{}_~'s {//nSplitter的缺省值为5 y>7VxX0xi //default value of nSplitter is 5 <Xs@ \ this("","","",5); F*4Qa } F0BOhlK p#;dLM/EA iTugvb public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) <S8I"8{Mb { *M5$ h*;v sSiteURL= sURL; 2>MP:yY;K sFilePath = sPath; Eo {1y sFileName = sName; QVSsi
j this.nSplitter = nSpiltter; -wtTq
ph' p*AP 'cR 7o965h } @8M'<tr<z |P. = n$hqNsM public String getSSiteURL() HV*:<2P%D { vN0L(B return sSiteURL; a(x.{}uG, } }uvKE|umj &Qtp"#{ f=_Bx2ub public void setSSiteURL(String value) b#Fk>j { M=\d_O#;Z sSiteURL = value; (iCZz{l@~ } Nn,vdu{^2 K{=r.W [I++>4 public String getSFilePath() ,WO%L~db { t7*G91Hoq& return sFilePath; mq{$9@3 } )WP]{ W)r >uyeI&z c69U1 public void setSFilePath(String value) s=q%:uCO { sxN>+v11z sFilePath = value; c?p0#3%L# } 4[5lX C Sr ztTfY g/U$!d_ public String getSFileName() 9{9#AI.G { }j5R@I6P return sFileName; /\ ,_P } Io,/ +#| kH>vD =q> d6t)gG*5 public void setSFileName(String value) H;TOPtt2 { 33{;[/4 sFileName = value; qXP1Q3 } 7E!";HT [Q7->Wo|S: ;Xfd1 public int getNSplitter() dr,B\.|jC { D% v:PYf return nSplitter; _q$0lqq~u } %2@ Tj}xa |z!q
r}i S|{Yvyp public void setNSplitter(int nCount) {UX"Epd);n { 5bF9IH nSplitter = nCount; ] 689 Q%D } H7z>S G0 } AQnJxIL: ~J:$gu~` {dy`
%It /* a2cx **Utility.java c]s(u+i */ c ,h.`~{ package NetFox; eEW roF r%g
<hT 8 E(aX4^]g public class Utility { " ;-{~ */%$6s~ $I)Tk`= public Utility() V!pq,!C$v { gD,YQ%aq oglXW8 Vr&el } RR[)UQ i$`|Y* //线程睡眠 P;)2*:--) public static void sleep(int nSecond) >~`Y { ]97Xu_ try{ .iOw0z Thread.sleep(nSecond); LKK{j,g7 } <_BqpZ^` catch(Exception e) SE-!|WR { ^w;o \G e.printStackTrace (); 5}-)vsa` } `YFkY^T } yM (_P0 #6*V7@9]3| //日志 ZfFIX5Qd\ public static void log(String sMsg) tIi!*u
{ U7nsMD System.err.println(sMsg); BpQ;w,sefq } pX>ua5Z 7%:??*"~ Qq`3S> public static void log(int sMsg) NDB*BmG { bjM-Hd/K System.err.println(sMsg); K?h[.`} } (,- 5(fW } g2[K< L0X&03e=e: ]uBT & /* F`YFo)W **TestMethod.java X0^zw^2W */ X)FL[RO%q package NetFox; _N>wzkJ kN'|,eKH4 w;N{>)hv public class TestMethod { LFEp /`7 I K E0sbU<11 public TestMethod() "_nX5J9 { ///xx/weblogic60b2_win.exe +G5'kYzJ try{ 4ggVj*{v SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); z{Hz;m:*_ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); $?H]S]#|}. SiteFileFetch fileFetch = new SiteFileFetch(bean); M?E9N{t8)a fileFetch.start(); _Ct}%-,4 } H"Q(2I catch(Exception e){e.printStackTrace ();} 3mpP|b" {M` R19'|TJ } qJ\X~5{ Z7`5x 8pXfT%] public static void main(String[] args) mBw2 { 1zdYBb6;j new TestMethod(); \1=T
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