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/* A+Xk=k5< **SiteFileFetch.java g@jAIy] */ {,aI0bw; package NetFox; C'c9AoE5> import java.io.*; $M T'ZM import java.net.*; <Y9xHn& +s'qcC QQwD)WG public class SiteFileFetch extends Thread { WhR j@y "7k
82dw
~e!b81 SiteInfoBean siteInfoBean = null; //文件信息Bean u0(PWCi2 long[] nStartPos; //开始位置 d* 6 lJT long[] nEndPos; //结束位置 lbtVQW0V;o FileSplitterFetch[] fileSplitterFetch; //子线程对象 oe:@7stG long nFileLength; //文件长度 @!:~gQ boolean bFirst = true; //是否第一次取文件 l`vb boolean bStop = false; //停止标志 De(\<H# File tmpFile; //文件下载的临时信息 Hi 1@ DataOutputStream output; //输出到文件的输出流 E\(dyq/ -K_p?
l //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) <6s?M1J public SiteFileFetch(SiteInfoBean bean) throws IOException BWct0= { >7VOytc siteInfoBean = bean; W5_:Q@ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); xjOj1Hv tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); rK%A=Q if(tmpFile.exists ()) '$3]U5KOwK { cv b:FK bFirst = false; {5=Iu\e read_nPos(); YYz,sR'%|} } w<hw>e^. else KKd Sh1 { )-_]y|/D:r nStartPos = new long[bean.getNSplitter()]; bnz2\C9^ nEndPos = new long[bean.getNSplitter()]; ]S6`",+)<f } E-\<,=bh -];/ *nl &_^t$To 4X@
<PX5 } wW~y?A"{2 GN4'LU "i\rhX public void run() hZE" 8%\q { t}zffe- //获得文件长度 :)UF# //分割文件 s0 ZF+6f //实例FileSplitterFetch b3G4cO;t; //启动FileSplitterFetch线程 ^
2"r't //等待子线程返回 ;/
iBP2 try{ cY|?iEVs) if(bFirst) 9 wun$!>& { R#ABda9 nFileLength = getFileSize(); ccc*"_45# if(nFileLength == -1) B&~#.<23: { gAA2S5th System.err.println("File Length is not known!"); lLO|, } 9Ij=~p]p else if(nFileLength == -2) 8\?7k { z+K -aj w System.err.println("File is not access!"); i NX%Zk[ } B\U9F5 else wo($7'.@
{ TBN0u k for(int i=0;i<nStartPos.length;i++) hjVct
r { x=g=e
<_ nStartPos = (long)(i*(nFileLength/nStartPos.length)); RKu'WD?sdH } 2sj[hI for(int i=0;i<nEndPos.length-1;i++) ^t&S?_DSZ { Q ke8BRBn nEndPos = nStartPos[i+1]; Bb5|+bP } i`3h\ku nEndPos[nEndPos.length-1] = nFileLength; -a`` } poZ04Uxo> } WoVPp*zlX M ABrf`<b eI8rnp(Ia //启动子线程 cFcn61x- fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; {sn RS)- for(int i=0;i<nStartPos.length;i++) f}JiYZ { ke'aSD fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), i6L>,^Dg siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), M#BM`2!s nStartPos,nEndPos,i); b&AGVWhh Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); RRW/.y fileSplitterFetch.start(); <L4.* } ^I =W< // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ;D}8acQ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); {MP8B'r-6 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", < Y5pAStg nEndPos = " + nFileLength); ^}JGWGib=+ // fileSplitterFetch[nPos.length-1].start(); "gD]K= v6Vie o= ~HWH2g //等待子线程结束 dNH6%1(s]0 //int count = 0; VRuY8<E //是否结束while循环 bC_qoI< boolean breakWhile = false; O$F<x, mlq+Z#9 Akar@ wh while(!bStop) h(q,-')l_ { ]mDsd* 1 write_nPos(); [BPK0 Utility.sleep(500); (x;Uy breakWhile = true; :@mBSE/ -~ w5yd _Xs(3V@'} for(int i=0;i<nStartPos.length;i++) Q"o* \I { ,"MRA if(!fileSplitterFetch.bDownOver) |;~kHc$W { <SK%W= breakWhile = false; IUB#Vdx break; vD,ZEKAN } I4[sf } /y8=r"'G if(breakWhile) C[E[|s*l break; :%_*C09 >K|<hzZ :Ma=P\J
W //count++; ORVFp]gG //if(count>4) Ll"
Kxg // siteStop(); >XTDN } $KSdNFtM)A GyirE` uu5AW=j System.err.println("文件下载结束!"); )4nf={iM } 9%{V?r]k catch(Exception e){e.printStackTrace ();} %y7&~me } 1L~y!il U*P&O+(1' (8JL/S;Z$ //获得文件长度 Lek!5Ug public long getFileSize() jXa;ovPK { {..6{~L int nFileLength = -1; ivgV5)". try{ w'[^RZW:j URL url = new URL(siteInfoBean.getSSiteURL()); C?xah?Sk HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); +c7e[hz httpConnection.setRequestProperty("User-Agent","NetFox"); tu4-##{ _wp>AJ r xqZZ(jZ int responseCode=httpConnection.getResponseCode(); [-ONs if(responseCode>=400) 2p^Jqp`$ { 6]%SSq& processErrorCode(responseCode); ,,FO6+4f return -2; //-2 represent access is error n(}cK@ } %-lilo bD2):U*Fzo Zqo String sHeader; 8fI]QW !^[i"F:G AVn?86ri for(int i=1;;i++) $Ph
T : { teQ<v[W. //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); OON]E3yy //Utility.log(in.readLine()); *KMW6dg; sHeader=httpConnection.getHeaderFieldKey(i); Gy]ZYo( if(sHeader!=null) QL].)Vgf { n]3Lqe; if(sHeader.equals("Content-Length")) Ihn#GzM?u { DB=^Z%%Z nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); buj*L& break; iBqxz:PHN( } )ajF ca@v } =<BPoGs5 else bZ5cKQ\6 break; $D][_ I } YcRo>:I } T^Lg+g+I catch(IOException e){e.printStackTrace ();} OMY^'g%w catch(Exception e){e.printStackTrace ();} F
`4a0~? 8wf[*6VwV p2=+cS"HC Utility.log(nFileLength); >s%&t[r6 fb=[gK#*, J<9;Ix8R return nFileLength; v1R t$[ } hZw bYvu (drDC1\ ^~7/hm: //保存下载信息(文件指针位置) s7Z+--I)L private void write_nPos() CMiE$yC { G m~2s;/ try{ x :? EL)( output = new DataOutputStream(new FileOutputStream(tmpFile)); ,hVDGif output.writeInt(nStartPos.length); Y00hc8< for(int i=0;i<nStartPos.length;i++) Hob n{E { 4!U)a // output.writeLong(nPos); lf9mdbm output.writeLong(fileSplitterFetch.nStartPos); }m -A #4. output.writeLong(fileSplitterFetch.nEndPos); ?*/1J~<(@ } 9F"^MzZ output.close(); my}l?S[2d@ } t_"]n*zk1 catch(IOException e){e.printStackTrace ();} L;
o$vI~U, catch(Exception e){e.printStackTrace ();} r.ib"W#4 } )JXlPU @Rw]boC =K;M\_k%y //读取保存的下载信息(文件指针位置) VBN=xg} private void read_nPos() 8-s7s!j { =M ."^X try{ DX(!G a DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 8dUP_t~d#q int nCount = input.readInt(); OnND(YiX nStartPos = new long[nCount]; 4XNdsb nEndPos = new long[nCount]; CQns:.`$` for(int i=0;i<nStartPos.length;i++) `gX$N1( { `L
m9!? nStartPos = input.readLong(); MC~<jJ, nEndPos = input.readLong(); \"|7o8 } vUR@P
- input.close(); wv.HPmq } TMG|"| catch(IOException e){e.printStackTrace ();} (&!x2M catch(Exception e){e.printStackTrace ();} (7A- cC } d",VOhW7)S O gtrp)x9 >|rU*+I` private void processErrorCode(int nErrorCode) l_i&8*=Px { *cy!PF& System.err.println("Error Code : " + nErrorCode); 1a
t Q9 } r
E&}B5PN= 2o<aEn&7|e W}P9I&3 //停止文件下载 'pHxO,vo public void siteStop() y4N2gBTKu { oqa8v6yG' bStop = true; NI85|*h for(int i=0;i<nStartPos.length;i++) #:xv]qb`k fileSplitterFetch.splitterStop(); b#W(&b^q YZZog 6% /wPW2<|"X. } eZ|_wB'r } lQqP4-E? //负责部分文件的抓取 c+ukVn`r **FileSplitterFetch.java Y(;u)uN_ */ E[Bj+mX9 package NetFox; V$g!#V 34I;DUdcE Vtv1{/@+c import java.io.*; OjurfVw import java.net.*; jk{m8YP)E i$6o>V6 PM3fJhx public class FileSplitterFetch extends Thread { o]aMhSol ]2rCn}; 6T6UIq String sURL; //File URL ,*Z/3at}5M long nStartPos; //File Snippet Start Position d Z}|G-: long nEndPos; //File Snippet End Position hg-M>|s7 int nThreadID; //Thread's ID >rY^Un{Z boolean bDownOver = false; //Downing is over 3
p!t_y|SX boolean bStop = false; //Stop identical l}~9xa}:D| FileAccessI fileAccessI = null; //File Access interface 42=/$V c!a1@G _Jn@+NoO public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException fF^A9{{BS { %+oV-o\ #A this.sURL = sURL; ;umbld0 this.nStartPos = nStart; 9)$gD this.nEndPos = nEnd; H`nd | nThreadID = id; h|.{dv fileAccessI = new FileAccessI(sName,nStartPos);//定位 !X\aZ{}Q } kd OIL2T N>IkK*v lmYyaui public void run() wPvYnhr|G- { +&[X7r< while(nStartPos < nEndPos && !bStop) `8kL=%(h { B:6VD /qC 0,wmEV!) XnB-1{a1 try{ %FJB9?9=| URL url = new URL(sURL); I+rLKGZC HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); fv:&?gc httpConnection.setRequestProperty("User-Agent","NetFox"); h]WW?. String sProperty = "bytes="+nStartPos+"-"; ,p
V3O`z httpConnection.setRequestProperty("RANGE",sProperty); Je~`{n Utility.log(sProperty); p/gf w01u~"E (^$SMuC InputStream input = httpConnection.getInputStream(); @@& ?,3 //logResponseHead(httpConnection); {-51rAyi >2mV{i& fJ;1ii~ byte[] b = new byte[1024]; pg3h>)$/ int nRead; \9 k3;zw while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Hlz$@[$ { WfYC`e7q nStartPos += fileAccessI.write(b,0,nRead); z
q@"qnr //if(nThreadID == 1) 9`Xr7gmQf // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); DI=?{A } .50ql[En
AtP!.p"j ivvm.7{ Utility.log("Thread " + nThreadID + " is over!"); lL*"N|Y bDownOver = true; v\R-G //nPos = fileAccessI.write (b,0,nRead); f`-UC_(; } |3Bmsd/3 catch(Exception e){e.printStackTrace ();} Asli<L(?` } ldr~=<hsZ } T&->xef= "]B%V!@ Hli22~7T: //打印回应的头信息 V"8w:? public void logResponseHead(HttpURLConnection con) LUEZqIf { ddw^oU for(int i=1;;i++) !BN@cc[% { J#?z/ 3v( String header=con.getHeaderFieldKey(i); 8b< 'jft if(header!=null) } ^WmCX2a //responseHeaders.put(header,httpConnection.getHeaderField(header)); j"n"=rTTQ Utility.log(header+" : "+con.getHeaderField(header)); {Z#=ppvs else $j"BHpN break; c>BDw< } 0?=a$0_C } >~})O&t $t.M`:G uYXkD#{ public void splitterStop() %jxeh.B3B { 5RR4jX] bStop = true; ageTv/ } r tH
#j ^AC2 zC ,YF1*69 } !_>o2 MGH2z: @gk{wh>c /* mj&$+z M> **FileAccess.java 6!v$"u|[!' *//文件访问(定位,写) TnJNs package NetFox; WntolYd import java.io.*; gq050Bl) "8/BVW^bv CwwZ~2 public class FileAccessI implements Serializable{ ["15~9 a6 w'.]m //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 9z7rv, RandomAccessFile oSavedFile; HrHtA] long nPos; b&*N ?4#wVzuzA n= FOB0= public FileAccessI() throws IOException !&R|P|7qN} { 6/&|)gW', this("",0); 7myYs7N8[ } r+,JM L t_id/ d?N[bA
public FileAccessI(String sName,long nPos) throws IOException MC%!>,tC { *`V r P oSavedFile = new RandomAccessFile(sName,"rw"); R[}fr36>/ this.nPos = nPos; E6fs& oSavedFile.seek(nPos); $j/#IzD1D } ]BfJ~+ N b
4A1M =jvL2ps< public synchronized int write(byte[] b,int nStart,int nLen) `Af5%m[ { X08[,P#I int n = -1; dlBr2 9 try{ N[kl3h%q oSavedFile.write(b,nStart,nLen); lCGEd 3 n = nLen; %:\GYs(Y } A}_0iwG catch(IOException e) synueg { 7towjwr e.printStackTrace (); d^I:{Ii' } a"phwCc"% 0](V@F"~ 3z
-="_p return n; Xr{
r&Rl } %XH%.Ps/ I$*LMzve G!7A]s>C } =1zRm >m Q; BD|95nl #2;8/"v /* D;6C2>U~L **SiteInfoBean.java ](>YjE0 */ gQuU_dbXSB package NetFox; (8Te{K h' zin'&G>l lKV7IoJ&; public class SiteInfoBean { S%o6cl = 3 ]w a8| kg^5D3!2{Q private String sSiteURL; //Site's URL i wI} private String sFilePath; //Saved File's Path 3W}qNY;J private String sFileName; //Saved File's Name BKQwF*<V private int nSplitter; //Count of Splited Downloading File lhB;jE + De-U. 1l\.>H\E public SiteInfoBean() TmEh$M {//nSplitter的缺省值为5 60r0O5=|Fl //default value of nSplitter is 5 `Db%:l^e this("","","",5); 8" (j_~; } dm"|\7 }UqL2KXi4 ja^ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) j){0>O.V { ?6 "B4%7b sSiteURL= sURL; J/\^3rCB sFilePath = sPath; ,AG k4] sFileName = sName; T 2Gscey this.nSplitter = nSpiltter; pXK-,7- (} Y|^uM, ,<U } ;9hS_%ldX4 *ch7z|wo. G@rV9 public String getSSiteURL() fT5vO.a
{ .cs4AWml< return sSiteURL; u\u6<[>P } #ib?6=sPC oPrK{flm D9\ E kX public void setSSiteURL(String value) a~F\2`Q { K'b #}N\ sSiteURL = value; wQ '_, d } E|x t\* %APeQy"6#^ v[<;z(7Qk public String getSFilePath() E<77Tj { ;:8SN&). return sFilePath; 8!qzG4F/ } \8/$ZEom D}nIF7r2N X"S")BQ
q public void setSFilePath(String value) #%.fsJNA$ { 4td9=dNA+l sFilePath = value; jB3Rue:+g } y@Ak_]{b "2hs=^&8 Y
>U_l:_^ public String getSFileName() /v7o!D1G { CB>*(Mu return sFileName;
P5`BrY,hZ } 2I0Zr;\f =S|dzgS/ |[MtUWEW public void setSFileName(String value) Sw~L
M&A { /N=M9i\; sFileName = value; MmD1@fW32# } rl:D>t(:. eI=:z/pd R|-!5J4h public int getNSplitter() \
6 :7 { JO&+W^$uY} return nSplitter; ;f9a0V s } $mut v=IO #~`d
;MC rWN%Tai- public void setNSplitter(int nCount) }PxPJ$o { HD;l1W) nSplitter = nCount; %VwkYAgA } 6:AZZF1 } @P6*4W RpU.v
` ]I(<hDuRp /* aU%QJ#j **Utility.java ,`ju(ac! */ `0Xs!f package NetFox; |^ J5YwCf P/T`q:<H 3/EJ^C public class Utility { J6g:.jsK! \OK"r-IO DcmRvi)&6 public Utility() )X'ln { <E\vc6n jDCf]NvOPM G!g];7PG( } ,*g.?q@W2 {{ +8oRzY //线程睡眠 #EIcP=1m4 public static void sleep(int nSecond) fU^5Dl { zI.:1(, try{ =iE)vY,?"} Thread.sleep(nSecond); Gw?ueui< } -[xbGSj{ catch(Exception e) /gq\.+'{ { /H :Bu e.printStackTrace (); |!uC [= } 2R~[B]2"r } (n4Uc308 &f<Ltdw //日志 &-p!Lg&D public static void log(String sMsg) `l+9g"q { |]tsf
/SA System.err.println(sMsg); z9ZS&=> } t9[%o=N~lD lCJ/@) vfOG(EkG.? public static void log(int sMsg) N3@gvS { i?|b:lcV System.err.println(sMsg); G'WbXX } AJ)N?s-= } Zr$D\(hX 06>+loBG PvVn}i /* XseP[ **TestMethod.java [A#>G4a< */ !&5B&w{u~! package NetFox; %p
tw=Ju :0(:}V3 z\ CC XOxd public class TestMethod {
>^Y)@J s
Vg89I& SaiYdJ public TestMethod() s^ K:cz { ///xx/weblogic60b2_win.exe J9XV:)Yv# try{ >(eR0.x SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); o`7B@] //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 2[5z6oG SiteFileFetch fileFetch = new SiteFileFetch(bean); trM)&aQto fileFetch.start(); }Fb966 $ } }!@X(S!do
catch(Exception e){e.printStackTrace ();} i2n66d jn#Ok@tZ ~0Xx] } 5g4xhYl70n #4ii!ev k~pbXA*u public static void main(String[] args) A?Gk8 { `&>CK`%Xu new TestMethod(); 6Y/TqI[
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