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/* ?']h%'Q
**SiteFileFetch.java 0yM[Z':i'{ */ tirIgZ package NetFox; -D^A:}$ import java.io.*; b#)UUGmI import java.net.*; abNV4 ,M ppIbjt6r S/ywA9~3Q public class SiteFileFetch extends Thread { gy:%l i`(^[h
?; Qe"pW\ SiteInfoBean siteInfoBean = null; //文件信息Bean ?rX]x8iP long[] nStartPos; //开始位置 HS>f1! long[] nEndPos; //结束位置 ,6^znOt FileSplitterFetch[] fileSplitterFetch; //子线程对象 C`jM0Q long nFileLength; //文件长度 ;^Sr"v6r>u boolean bFirst = true; //是否第一次取文件 w@\vHH.;V boolean bStop = false; //停止标志 (UCK;k File tmpFile; //文件下载的临时信息 Qcjc, DataOutputStream output; //输出到文件的输出流 hJz):d>Im dx*qb //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) HBE.F&C88 public SiteFileFetch(SiteInfoBean bean) throws IOException AGP("U'u { e(F42;$$ siteInfoBean = bean; "&Dx=Yf //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); q_W0/Ki8 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); l&YKD,H}; if(tmpFile.exists ()) _lKZmhi { $2DuB bFirst = false; R
#]jSiS read_nPos(); F(#rQ_z] } ZPN
roCK` else ,bE$| x' { y;?ie]3G nStartPos = new long[bean.getNSplitter()]; JPM))4YDR nEndPos = new long[bean.getNSplitter()]; Z+`{ 7G?4m } +z9@:L hd V1nS$ tGdf/aTjy %Pqk63QF } j;_c+w!P $eV$2p3H :4S%'d7 public void run() ZR v"h/~ { RC|!+TD //获得文件长度 IPSF]"}~ //分割文件 w=h1pwY //实例FileSplitterFetch f~OU*P>V@ //启动FileSplitterFetch线程 Xb
!MaNm) //等待子线程返回 kPBV6+d~ try{ 9z;HsU v if(bFirst) X2mREt9 { -7uwOr nFileLength = getFileSize(); [OTJV pC if(nFileLength == -1) wfvU0]wk} { lDC$F N System.err.println("File Length is not known!"); R`";Z$~{ } )Dp/('Z2 else if(nFileLength == -2) LLWB { AB Xl System.err.println("File is not access!"); x6afI<dm } UX<Qcjm$e else +bK.NcS { ^ 5VK> for(int i=0;i<nStartPos.length;i++) GhY1k"; { kL7#W9 nStartPos = (long)(i*(nFileLength/nStartPos.length)); dUgrKDNyA } Uq_j\A;c for(int i=0;i<nEndPos.length-1;i++) '/Bidb? { Ogt]_ nEndPos = nStartPos[i+1]; !{n<K:x1 } 6J~12TU, nEndPos[nEndPos.length-1] = nFileLength; X1[CX&Am } j#~Jxv%n } gw`B "c| Ee1LO#^_6 ^[Ua46/" m //启动子线程 )yY6rI;: fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; b5IA"w for(int i=0;i<nStartPos.length;i++) 9%ii '{ { FEPXuCb fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Glq85S siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ]nQt>R p_ nStartPos,nEndPos,i); r!P}u Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 2>-S-;i fileSplitterFetch.start();
o47r<>t } RO0>I8c1c // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 3Y)PU= siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); S0g'r
!;6 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", @ DZD nEndPos = " + nFileLength); O9'x-A% // fileSplitterFetch[nPos.length-1].start(); ;
UiwH MRr</o \ 6EKgC1 //等待子线程结束 LAx4Xp/ //int count = 0; 1iL'V-y //是否结束while循环 0w'j+ boolean breakWhile = false; Et"?8\"n7
B .TB\j FVv8-- while(!bStop) 4$/i%B#ad { .t&R>9cZ^ write_nPos(); Mfk2mIy Utility.sleep(500); (3[z%@I breakWhile = true; 7@.cOB`y@3 1[*UYcD <]C$xp<2 for(int i=0;i<nStartPos.length;i++) Nf3.\eR { Bb&^{7 if(!fileSplitterFetch.bDownOver) G>YAJo { (vR 9H(# breakWhile = false; <?D[9Mk$ break; IfO;S*Qt } *F>v]8 } !@u>A_ if(breakWhile) 30PZ{c&Rll break; e&ANp0|W RUCPV[{b #B'aU#$u //count++; + SZYg[ //if(count>4) 'B83m#HR# // siteStop(); VHOfaCE } xRuFuf8 C
]Si|D 6m .k;' System.err.println("文件下载结束!"); ES <1tG } GN#<yv$av catch(Exception e){e.printStackTrace ();} in<Rq"L } "+KJop gu)=wu0 }],Z;: //获得文件长度 ` b !5^W public long getFileSize() O 2{)WWOT { lcON+j int nFileLength = -1; h@7FY try{ ?^'
7+8C*J URL url = new URL(siteInfoBean.getSSiteURL()); UE _fpq HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); _u"nvgVz9 httpConnection.setRequestProperty("User-Agent","NetFox"); zeP}tzQO 9[v1h,L )f+U~4G& int responseCode=httpConnection.getResponseCode(); _a_xzv' if(responseCode>=400) 2c<&eX8" { :J}t&t processErrorCode(responseCode); M-NV_W&M return -2; //-2 represent access is error 0U66y6 } )PkNWj6%y -B#yy]8 g]* String sHeader; eRbGZYrJ ^n#1<K[E
|eoid?= for(int i=1;;i++) qo+N,x9o { &m3.h!dq //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ;TQf5|R\K //Utility.log(in.readLine()); qZ@0]"h sHeader=httpConnection.getHeaderFieldKey(i); zWw2V}U! if(sHeader!=null) BhpOXqg { A6<C-1
N}j if(sHeader.equals("Content-Length")) 8pM>Co! { L+B?~_* nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); OYM@szM break; pDPxl?S } d lH$yub } nM=e]qH else Y**|N8e break; QH4wUU3X } a\kb^D=T } w&Dv8Wv+Oq catch(IOException e){e.printStackTrace ();} ?&WYjTU]H catch(Exception e){e.printStackTrace ();} `T/~.`R LW#M@ t{! Utility.log(nFileLength); T1B|w"In g1(Xg. ]!1OH
|Ad return nFileLength; +ww^ev% } K*K1(_x= 5_K5?N Xog/O i //保存下载信息(文件指针位置) Jsg
I' private void write_nPos() 8B!aO/Km { h*0S$p<[1 try{ {s,+^7 output = new DataOutputStream(new FileOutputStream(tmpFile)); <j}lp- output.writeInt(nStartPos.length); I9$c F)zk for(int i=0;i<nStartPos.length;i++) XXmE+aI { $
E1Tb{' // output.writeLong(nPos); )j6eE+gF output.writeLong(fileSplitterFetch.nStartPos); Q^}%c
U0 output.writeLong(fileSplitterFetch.nEndPos); L^kp8o^$ } +5<k-0v output.close(); Kj=gm . } WV;=@v catch(IOException e){e.printStackTrace ();} fbrp#G71y catch(Exception e){e.printStackTrace ();} 1Wg-x0R } ,zcQS-e2 [}nK"4T"Ri m:tiY
[c>W //读取保存的下载信息(文件指针位置) %/"Oxi^G private void read_nPos() Gtv,Izt { qOCJT Og7 try{ Q>}2cDl DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); )G^TW'9 int nCount = input.readInt(); 1F[L"W;r nStartPos = new long[nCount]; |wxGpBau nEndPos = new long[nCount]; ~KjJ\b)R for(int i=0;i<nStartPos.length;i++) ofc.zwH {
a<XCNTaVT nStartPos = input.readLong(); =<f-ob8, nEndPos = input.readLong(); j dut4 nFc } $X`y%*<<v input.close(); CF
y}r(q } $KV&\Q3\0 catch(IOException e){e.printStackTrace ();} KcGsMPJ catch(Exception e){e.printStackTrace ();} xtV[p4U } +%J\y^09kr "yb WDWu z,;;=V6j private void processErrorCode(int nErrorCode) *a}(6Cx { =Je>`{J System.err.println("Error Code : " + nErrorCode); `T*U]/zQ } hi{%pi&!T
V+MK'<#B D _X8- //停止文件下载 &!.HuRiuC public void siteStop() iMP { 0V,Nv9!S bStop = true; )yee2(S
for(int i=0;i<nStartPos.length;i++) MKGS`X]<J fileSplitterFetch.splitterStop(); 4k}e28 -Q
e~)7 @B1{r|-<^ } jjOgG-Q } s}x>J8hK //负责部分文件的抓取 IxSV? k
**FileSplitterFetch.java >X}{BDMb. */ V%L/8Q~ package NetFox; g1m-+a GrEs1M1]* sPYX~G&T import java.io.*; `{<frB@ import java.net.*; pck >;V o.:p_(|hI ~GB=Nz public class FileSplitterFetch extends Thread { 85U.wpG _"f :` 'E]A.3-Mt String sURL; //File URL Ng<1Sd|MV long nStartPos; //File Snippet Start Position :{g7lTM long nEndPos; //File Snippet End Position g#^|oYuH6 int nThreadID; //Thread's ID /F[+13C boolean bDownOver = false; //Downing is over `_AM` >_ boolean bStop = false; //Stop identical 0LVE@qEL FileAccessI fileAccessI = null; //File Access interface 0A$SYF$O+[ oN2=DYC41 ,\ldz(D?+ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException CDg AGy { 60B-ay0e$b this.sURL = sURL; rnhFqNT: this.nStartPos = nStart; Bt~s*{3$8 this.nEndPos = nEnd; E{^^^"z P nThreadID = id; :xeLt; fileAccessI = new FileAccessI(sName,nStartPos);//定位 IhonnLLW } L ^Y3=1#"g Z[#IfbYt Ueyw;Y public void run() n[k1np$7?6 { T-L5zu while(nStartPos < nEndPos && !bStop) d+2daKi { m@qqVRn#) \P?ToTTV L/r{xS try{ R9dP ,<2 URL url = new URL(sURL); ym%slg HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Df=q-iq<{/ httpConnection.setRequestProperty("User-Agent","NetFox"); TQ9'76INb String sProperty = "bytes="+nStartPos+"-"; 1p\Ak httpConnection.setRequestProperty("RANGE",sProperty); qc8Ta" Utility.log(sProperty); )s")y &sOM>^SAD av' *u InputStream input = httpConnection.getInputStream(); Wc'Ehyi; //logResponseHead(httpConnection); vZjZb(jlN : }?{@#Z #s"B-sWE byte[] b = new byte[1024]; #}o<v|; int nRead; 'Ji+c while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) i ^|@"+ { 4,}GyVJFb` nStartPos += fileAccessI.write(b,0,nRead); MV936 //if(nThreadID == 1) I-:`cON=G // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); D s-` } y4F^|kS) [ ,b'4CF #ooc)), Utility.log("Thread " + nThreadID + " is over!"); f'{>AKi=C bDownOver = true; <MZi<Z` //nPos = fileAccessI.write (b,0,nRead); 'U)8rR } :m`/Q_y" catch(Exception e){e.printStackTrace ();} %g^"] } sbla`6Fb } rihlae5Kz tV`&-H Pz473d //打印回应的头信息 {'~sS public void logResponseHead(HttpURLConnection con) 'j79GC0 { %W;u}` for(int i=1;;i++) c^S&F9/U* { Es;;t83p String header=con.getHeaderFieldKey(i); \3^Pjx if(header!=null) 7%CIt?Z% //responseHeaders.put(header,httpConnection.getHeaderField(header)); 9~Xg#{ Utility.log(header+" : "+con.getHeaderField(header)); Fk$@Yy+}e else Y><(? break; D@hmO]5c } (!n-Age } )BLmoJOf U42\.V0 5Rs?CVVb public void splitterStop() r<(kLpOH% { E^syrEz bStop = true; /=M.-MU2 } v MWC(m "k>bUe|RG ~&~C#yjg1 } Y'_ D<Mp g{a d0.y, hEcYpng~ /* )6G+ tU' **FileAccess.java |Ow$n *//文件访问(定位,写) Oxn'bh6R0 package NetFox; 4TJ!jDkox import java.io.*; r,nn~ tJ>d4A;8x <4NQL*|> public class FileAccessI implements Serializable{ R6Pz#`n bX{PSjD //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 g
=\13#F RandomAccessFile oSavedFile; SRk7gfP*q long nPos; r %xB8e9 j?J=w=.Nx ^K>pT}u public FileAccessI() throws IOException Na;t#, { w{ m#Yt this("",0); 4H9xO[iM } Kz^ hQd :wCC^Y] _6I >+9#C public FileAccessI(String sName,long nPos) throws IOException SD I,M { Bcm=G"" oSavedFile = new RandomAccessFile(sName,"rw"); %#Q
#N,fw this.nPos = nPos; 7eH@n<]Y2 oSavedFile.seek(nPos); /2'c> } qid1b
b A'v[SUW'm _Fvsi3d/ public synchronized int write(byte[] b,int nStart,int nLen) Px#4pmz { Sh47c4{ int n = -1; m[#%/ try{ =z%s8D2 oSavedFile.write(b,nStart,nLen); m-#d8sD2C n = nLen; ]=pWZ~A } 3DHvaq q7 catch(IOException e) {8i}Ow { ~pwY6Q e.printStackTrace (); ~l4Q~' } Cj=J;^vf b6$4Ul-. ,dq`EsHg`M return n; {&b-}f"m } ^)'||Ly ,DQ
>&_DK ],#ZPUn } m&{rBz0 $q=hcu ^:$j:w?j /* 5[ hlg(eb **SiteInfoBean.java )S"o{N3B */ dR?5$V( package NetFox; s={X-H< 2 kfIbgya &A#90xzF public class SiteInfoBean { D`5:
JR-{ 5vl2yN EID(M.G private String sSiteURL; //Site's URL Kjvs@~6t private String sFilePath; //Saved File's Path ob)D{4B' private String sFileName; //Saved File's Name 7{8)ykBU^ private int nSplitter; //Count of Splited Downloading File 13]y)( 34^Q5B~^J SwQOFE/Dv~ public SiteInfoBean() @V*au: {//nSplitter的缺省值为5 U@MOvW) //default value of nSplitter is 5 $Jt8d|UP this("","","",5); cbY3m Sfn* } &s_}u%iC F\l!A'Q+t ROcY'- public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) VdYOm { :K5V/-[|V1 sSiteURL= sURL; f2 VpeJ<p sFilePath = sPath; FxMMxY,*% sFileName = sName; S:DcfR=a this.nSplitter = nSpiltter; + 4++Z d
u_O} x vHoT@E#}' } !k ;[^> ',<{X(#( P[r}(@0rJ public String getSSiteURL() A89Y;_4y { 4{uJ||! return sSiteURL; vjY);aQ } R#rh \Gv- sA s"gKonwI2 public void setSSiteURL(String value) 15RI(BN { Hd96[Uo sSiteURL = value; B/[hi%~ } ^!XU+e+:0 HE4`9$kVLr qLU15cOM public String getSFilePath() Ul7,k\q@ { ||bA return sFilePath; 3ytx"=B% } 5QCw5N F^J&g%ql 0fEZD$ public void setSFilePath(String value) xow6@M, { dpl"}+ sFilePath = value; Vu^Q4Z } 2*b#+ b !^rITiy gt(X!iN] public String getSFileName() Ss*LgK_ { R
A-^!4tX return sFileName; ~M|NzK_9 } $L $j
KNwf <[*h_gE5 ;5zjd, public void setSFileName(String value) pO@k@JZ { +^o3}` sFileName = value; 0$Qn#K } xV
}:M Wl@0TUK S S7D1 public int getNSplitter() x|P<F 2L { |sDG>Zq? return nSplitter; T=iZ9w } 7l4InR] @Wlwt+;fT i:NJ>b public void setNSplitter(int nCount) 1`7]C+Pv { +"*l2E]5 nSplitter = nCount; IDL^0:eg<. } y'i:%n}I } bF8xQ<i~Y t(LlWd 6=aBD_2@ /* mUe@Dud **Utility.java o%9Ua9|RR */ k1@
A'n package NetFox; wjw<@A9 l=<F1L z R
oF public class Utility { v{\n^|=]) Es ZnGuY iLI.e rm public Utility() 1GyA QHx, { K%.YNVHHC xOX*=Wv (PE8H~d } d[qEP6B %s&E-*X //线程睡眠 &,6y(- public static void sleep(int nSecond) hc31+TL { P*nT\B try{ @pEO@bbg> Thread.sleep(nSecond); EzeDShN=J } 9cx!N,R t catch(Exception e) GwU>o:g" { vb80J<4 e.printStackTrace (); b*F :l# } AU${0#WV_ } /oixtO) C$Hl`>?$ //日志 $=S'#^Z public static void log(String sMsg) /^es0$Co. { ,EGD8$RA] System.err.println(sMsg); d
>wmg*J } xSMp[j SBYMDKZ 8=zM~v) public static void log(int sMsg) p.W*j^';Q { ^7^bA System.err.println(sMsg); 9^[5!SMzCj } 0;m$a= } y9l.i@-
h(N9RJ} J=Y( *D7Q /* [?K\%] **TestMethod.java zi DlJ3]^ */ {"@b` package NetFox; 7! A%6 V?L$ys b&V]|Z( public class TestMethod { &j~|3 .]sIoB-54 \i;~~;D public TestMethod() 1\.zOq# { ///xx/weblogic60b2_win.exe IP4b[|ef try{ H2p XJ/XF SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); ba)YbP[ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); Ns(L1'9= SiteFileFetch fileFetch = new SiteFileFetch(bean); Vlxb<$5Nh fileFetch.start(); yPxG`w' } XCi]()TZ_ catch(Exception e){e.printStackTrace ();} j*Wh;I+h '2qxcc o -aeo7C } l1|,Lr Gk]qE]hi E(4lu% public static void main(String[] args) ^*UfCoj9Z { W$VCST new TestMethod(); GO
GXM4I } G]NtX4'4 } >7Sl(
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