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/* ?UCK **SiteFileFetch.java ?*lpu */ e=S51q_0 package NetFox; ;K]6/Wt import java.io.*; rvrv[^a( import java.net.*; |zhVl w64 /$ YTP6m9hA+ public class SiteFileFetch extends Thread { 8L]em&871 >Z@^R7_W F)rU*i7 SiteInfoBean siteInfoBean = null; //文件信息Bean ,)-7f| long[] nStartPos; //开始位置 I,J*\)-%J long[] nEndPos; //结束位置 X/Umfci FileSplitterFetch[] fileSplitterFetch; //子线程对象 z2p@d1 long nFileLength; //文件长度 Al&)8x{p boolean bFirst = true; //是否第一次取文件 O]&DDzo boolean bStop = false; //停止标志 M_asf7|v File tmpFile; //文件下载的临时信息 kH:! 7L_= DataOutputStream output; //输出到文件的输出流 d/oxRzk'L ,ND}T#yTR //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) !;EG<ji,gj public SiteFileFetch(SiteInfoBean bean) throws IOException zQvp<IUq { CJ0{>? siteInfoBean = bean; +
q@kRQY;n //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath()));
2w6y tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ~Iw7Xq E2 if(tmpFile.exists ()) Qxb5Y)/jn { X;`XkOjk bFirst = false; t<~$?tuZ read_nPos(); >HMuh) } IjJO; else x
xMV2&,Jq { t*X
k'(v nStartPos = new long[bean.getNSplitter()]; 2eNA#^T= nEndPos = new long[bean.getNSplitter()]; #J&45 } \H
<k p1^k4G X@`kuWIUw 8:s"
^YLN } mc37Y. b3Nr>(Z<} 6XU1w public void run() 8JYF0r7 { \Eqxmo //获得文件长度 %C}TdG(C //分割文件 `x%(
n@ g //实例FileSplitterFetch N0`v;4gF$] //启动FileSplitterFetch线程 !\D[lh}rL //等待子线程返回 ;oL`fQyr try{ 8bl&-F` if(bFirst) Y [8~M8QX { F/1B>2$` nFileLength = getFileSize(); J~dk4D\ if(nFileLength == -1) zg)-RCG { 7ip$#pzo System.err.println("File Length is not known!"); v(PwE B] } dG5p`N% else if(nFileLength == -2) ca~nfo { '#JC 6#X System.err.println("File is not access!"); eAvOT$ } 6KT]3*B else }@VdtH { qo,uOi for(int i=0;i<nStartPos.length;i++) LRe2wT>I { +v$,/~$tI nStartPos = (long)(i*(nFileLength/nStartPos.length)); 0A$x'pU) } k.UQT^. for(int i=0;i<nEndPos.length-1;i++) >SS
YYy { ZY NHVR nEndPos = nStartPos[i+1]; p%MH**A } b=Rw=K.
nEndPos[nEndPos.length-1] = nFileLength; u/W } |/Q7 o1i } CVo2?ZQ II=(>G9v
v E4ce //启动子线程 8 cN[t.S fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; frsqnvm;+ for(int i=0;i<nStartPos.length;i++) mBb;:-5 { Yfro^}f fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Q:U^):~ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), w0`aW6t# nStartPos,nEndPos,i); _T[7N|'O Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); a g=,oYn fileSplitterFetch.start(); G.ag$KF } }V@ *
:3w8 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1^F
!X= siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); LI`L!6^l // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", e15_$M;RW nEndPos = " + nFileLength); .rfKItd // fileSplitterFetch[nPos.length-1].start(); Z %?:
CA >b6!*Lrhs m*'^*# //等待子线程结束 "YW&,X5R //int count = 0; `TugtzRU //是否结束while循环 +@n8DM{b boolean breakWhile = false; P;B<R" >j&+mii _tl while(!bStop) 6I5,PB { ED0Vlw+1 write_nPos(); f=$w,^)M Utility.sleep(500); $>Y2N5 breakWhile = true; l'Oz-p.@ B;k3YOg <oJM||ZA for(int i=0;i<nStartPos.length;i++) 6R.%I{x' { l+%2kR if(!fileSplitterFetch.bDownOver) 16;r+.FB' { n2e#rn breakWhile = false; cM'\u~m{ break; V5]}b[X } j=&]=0F } 5"5tY if(breakWhile) % 3"xn!'vf break; osBwX.G'l \w;d4r8x ;F)j,Ywi)H //count++; G&eRhif //if(count>4) LIm{Y`XU // siteStop(); >v
sy P } B~\mr{|u 8mrB_B5 Rw
j4 System.err.println("文件下载结束!"); tWT,U[ } mgODJ catch(Exception e){e.printStackTrace ();} SVJL|S 3k } O
%x<
>
T$M0&< ^(w%m# //获得文件长度 Z4&,KrV public long getFileSize() u
ZzO$e { FR bmeq3c int nFileLength = -1; pJnT \~o try{ B^;G3+} URL url = new URL(siteInfoBean.getSSiteURL()); "L?h@8sa HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); c8@zpkMj/ httpConnection.setRequestProperty("User-Agent","NetFox"); lKtA.{( 1KHFzx, \3WF-!xe int responseCode=httpConnection.getResponseCode(); .el&\Jt if(responseCode>=400) ()Tl\ { pm)kocG processErrorCode(responseCode); Wqy\yS [ return -2; //-2 represent access is error =sp5.-r } =hw&2c #![9QUvcf eNQQ`ll@m String sHeader; t\GoUeH] [WfigqY`b* H}ie D"T_ for(int i=1;;i++) %oee x1`= { yF [|dB //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); z(o zMH //Utility.log(in.readLine()); t9QnEP' sHeader=httpConnection.getHeaderFieldKey(i); fV "gL(7 if(sHeader!=null) ' F,.y6QU { KxA^?,t[ if(sHeader.equals("Content-Length")) 5 R* { >'/KOK" nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); o(gEyK break; nq/SGo[c } s%6{X48vY^ } D
,U#z else ,
z-#B] break; 9"g!J|+ } 6_&uYA<8pE } VB}4#-dG? catch(IOException e){e.printStackTrace ();} t7P[^f15[ catch(Exception e){e.printStackTrace ();} @ P'("qb~ &E/0jxM1 _nn\O3TB Utility.log(nFileLength); ?z[k.l+6w s7 789pR *XCgl*% * return nFileLength; h1_9Xp~N } 8kRqF?rbj
|/YwMBi "p"M9P' //保存下载信息(文件指针位置) e`7dRnx&0 private void write_nPos() *WQl#JAr { K/;*.u`: try{ MEI.wJZ output = new DataOutputStream(new FileOutputStream(tmpFile)); ##\
<mFE output.writeInt(nStartPos.length); Xc}~_.] for(int i=0;i<nStartPos.length;i++) ((AsZ$[S { =O.%)| // output.writeLong(nPos); H\PY\O&cP output.writeLong(fileSplitterFetch.nStartPos); m4m,-}KNi output.writeLong(fileSplitterFetch.nEndPos); J
,s9,(" } iVUkM3 output.close(); &{R]v/{p] } SK]"JSY` catch(IOException e){e.printStackTrace ();} s(?A=JJ catch(Exception e){e.printStackTrace ();} 4nz$Ja) } v PJ=~*P= 1y{@fg~.. R'z
-#*[ //读取保存的下载信息(文件指针位置) ir?Y> private void read_nPos() K^yZfpa8 { bCSgdK try{ &F 3'tf? DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); +lNAog int nCount = input.readInt(); "J=A(w5 nStartPos = new long[nCount]; X }""=
S< nEndPos = new long[nCount]; w vnuE<o8 for(int i=0;i<nStartPos.length;i++) CKuf'h# { 37U2Tb!y' nStartPos = input.readLong(); LP{@r ic nEndPos = input.readLong(); gP^p7aYwn } .S6u{B input.close(); |bM?Q$>~ } Cvgk67C=$ catch(IOException e){e.printStackTrace ();} .B? J@, catch(Exception e){e.printStackTrace ();} ~USU\dni } qrLE1b 1$ oScKL#Hu r.vezsH private void processErrorCode(int nErrorCode) *ak"}s { @&F\ M} System.err.println("Error Code : " + nErrorCode); T!ik"YZ@i } a{y"vVQOF 0{k*SCN# ~]l
T>|X //停止文件下载 C%ZSsp
u public void siteStop() |EpL~G_ { V.?Oly bStop = true; m`lxQik for(int i=0;i<nStartPos.length;i++) &f"kWOe$X fileSplitterFetch.splitterStop(); rP<S
=eb Eo@b)h CW .
O"_ } rv26vnJy" } Y )](jU%o //负责部分文件的抓取 wQR0R~|M **FileSplitterFetch.java Z{p62|+Ck@ */ {{+woL'C package NetFox; iqAME%m AZ'"Ua VYAz0H1-_ import java.io.*; QZO9CLX 8k import java.net.*; 92pl#Igt qCUn.
mI F8En)# public class FileSplitterFetch extends Thread { rd0[(- eN Y? cpJ(77e String sURL; //File URL sR*.i?lN long nStartPos; //File Snippet Start Position H]a@"gO long nEndPos; //File Snippet End Position rD*CLqK int nThreadID; //Thread's ID /)LI1\o boolean bDownOver = false; //Downing is over 1cvH boolean bStop = false; //Stop identical T0F!0O ` FileAccessI fileAccessI = null; //File Access interface !Bqmw E#^?M#C w.0:#4 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException >6\rhx> { 7w8I6 this.sURL = sURL; 5.o{A#/NTl this.nStartPos = nStart; A{(<#yRfg this.nEndPos = nEnd; *0!IHr"fn nThreadID = id; ,EuJ0]2 fileAccessI = new FileAccessI(sName,nStartPos);//定位 SBog7An9SI } 4.o[:5' #CcWsI>+w> o0`|r+E\ public void run() k,M%"FLQ { =3R5m>6!/ while(nStartPos < nEndPos && !bStop) f !D~aJ { tI;pdR] |`c=`xK7' qFwJ%(IQ try{ r[votdFo URL url = new URL(sURL); 5:6]ZFW HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); @,%IVKg\ httpConnection.setRequestProperty("User-Agent","NetFox"); - )brq3L String sProperty = "bytes="+nStartPos+"-"; o9 g0fC httpConnection.setRequestProperty("RANGE",sProperty); |-!
yKB Utility.log(sProperty); idLCq^jnJ *5Aq\g,n rZSX fgfr InputStream input = httpConnection.getInputStream(); -)dS`hM //logResponseHead(httpConnection); Lr ;PESV lMW4SRk1C yw{;Qm2\7 byte[] b = new byte[1024]; 8Ug`2xS<_ int nRead; +i1\],7 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) _=d
X01 { 0s+pcqOd^ nStartPos += fileAccessI.write(b,0,nRead); I6B4S"Q5< //if(nThreadID == 1) Rb=8(# // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); MRZ/%OZ. } *]]C.t-cd du0]LiHV :Tu%0="ye Utility.log("Thread " + nThreadID + " is over!"); r1o_i;rg bDownOver = true; I,0Z* rw //nPos = fileAccessI.write (b,0,nRead); V/@?KC0B5 } , U?W catch(Exception e){e.printStackTrace ();} :!nBTw } QZ:xG:qyk; } hJIF!eoI u{>_Pb wO&2S-;_K //打印回应的头信息 !v`C-1}70 public void logResponseHead(HttpURLConnection con) Zv8I`/4? { TP-<Lhy for(int i=1;;i++) H.R7,'9 { 2B<0|EGtzw String header=con.getHeaderFieldKey(i); '
+*,|;? if(header!=null) (bBr O74lR //responseHeaders.put(header,httpConnection.getHeaderField(header)); KWzJ Utility.log(header+" : "+con.getHeaderField(header)); Z.v2!u else ~3F\7%Iqc break; 7\e96+j|f } pS
C5$a( } C6P(86? |4tnG&= LG6k
KG public void splitterStop() g3"eEg5 NY { w\PCBY= bStop = true; #vnJJ#uI|> } lAcXi$pF ""2g{!~r fL7u419= } =O?#>3A} sHwn,4|iY .xIu /* oy?>e1Sy* **FileAccess.java )rP)-op|A *//文件访问(定位,写) FJj # package NetFox; $F,&7{^ import java.io.*; mhXSbo9w- AT6:&5_` u|'}a3 public class FileAccessI implements Serializable{ vKCgtk !R/-|Kjy //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 lx vRF93a. RandomAccessFile oSavedFile; $4j$c|S! long nPos; 5?()o}VjAO 3{;W!/&> Es~|:$(N]| public FileAccessI() throws IOException `T \"B% { !Ui"<0[, this("",0); %j*i= } )f6:{ma <m|\#Jw_V W18I"lHeh public FileAccessI(String sName,long nPos) throws IOException ,& ^vc_} { xO<$xx oSavedFile = new RandomAccessFile(sName,"rw"); (3;dtp>Xx this.nPos = nPos; .}V&*-ep oSavedFile.seek(nPos); ,%a7sk<5k }
mGK-&|gq 5v
uB87` qXQ/M] public synchronized int write(byte[] b,int nStart,int nLen) mm5y'=# { @/m|T]'8 int n = -1; U=G^wL try{ H"g$qSx oSavedFile.write(b,nStart,nLen); <e:2DB& n = nLen; KfVLb4@16_ } S_B $-H| catch(IOException e) {#c**' 4 { UI,i2<& e.printStackTrace (); *Ugtg9j } 22<T.c u?>]C6$ v\UwL-4[ return n; {_]'EK/w } 5"]t{-PD jr9/ y+PiH } -a}d
@& UW%.G gtBnP~zT\B /* 8] BOq: **SiteInfoBean.java 71h?t`N */ N{(Q,+ ~ package NetFox; f~3_Rv! CX8tTbuFl ~
}<!ON; public class SiteInfoBean { ^.d97rSm nsCat($) ;BR`}~m private String sSiteURL; //Site's URL sPee"9%, private String sFilePath; //Saved File's Path }5)sS}C private String sFileName; //Saved File's Name SgOn:xg;3L private int nSplitter; //Count of Splited Downloading File o~*5FN}%+l 'Si1r%'m# '<v/Gl\ public SiteInfoBean() c
QjzI# {//nSplitter的缺省值为5 BK_x5mGu3 //default value of nSplitter is 5 +Y^_1 this("","","",5); (v\Cv)OS } B`/cKfg a09]5>* p$5+^x'( public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) c
4<~?L { K`9ph"(Z sSiteURL= sURL; oM@X)6P_ sFilePath = sPath; _l`s}yC sFileName = sName; W|PKcZ ]Uc this.nSplitter = nSpiltter; "o*zZ;>^ 3KF[ v{ ^}-(8~_en } 6tE<`"P! 0wmz2zKV ZjE!?
'(ef public String getSSiteURL() 88dq8T4 { amL8yb return sSiteURL; rSYzrVc } ?\QEK ~ "]6 8%UI<I, public void setSSiteURL(String value) ]Y3|*t(\ { n%Vt r sSiteURL = value; qq&G~y } rf% E+bh4 ,Z7tpFC '~^3 =[Z public String getSFilePath() dnby &-+T { g2=5IU< return sFilePath; LDJ=<c! } fR>(b?C ldJ:A*/M6 rKDMIECrm public void setSFilePath(String value) 2Et7o/\< { k-LB %\p sFilePath = value; Tm8c:S^uq) } !!=%ty
):.
+u= S.9ki< public String getSFileName() qp-/S^% { #-9;Hn4x return sFileName; C^@~ } R~,*W1G6sF "RG.27 C(:tFuacpw public void setSFileName(String value) hCX}* { CW(]6s u{ sFileName = value; xud } Y
9eGDpW {]\QUXH =TDK$Ek public int getNSplitter() BfLh%XC { qY24Y return nSplitter; I9ga8mG4-' } XD5z+/F<"0 lE+v@Kb: 6#+&_#9 public void setNSplitter(int nCount) Tc6H%itV { PrIS L[@ nSplitter = nCount; !b"#`O%` } E%M~:JuKd? } cH()Ze-B yfS`g-j{~ jXO*_R /* -WIT0F4o; **Utility.java M"OXNPkc */ {89F* package NetFox; jUq^$+N /@5X0m #c5 NFU}9 public class Utility { C3af>L@} klG]PUzd 3S-n sMs. public Utility() .c'EXuI7), { @0q%&v0 Ed3 *fY bz[+g,e2oA } +Io[o6* NTk"W!<Cl2 //线程睡眠 YCwfrz public static void sleep(int nSecond) $X~4J { +I0?D try{ -r_/b Thread.sleep(nSecond); &eQF[8 , } B
Mh949; catch(Exception e) uhUC m { lHwQ'/r e.printStackTrace (); e,qc7BJzK } @ oE [! } 9l?#ZuGXp O $uXQ.r //日志 B:=*lU.n public static void log(String sMsg) ~A+DH { 0+b1R}!2 System.err.println(sMsg); sm-RpZ&| } "Y9
*rL Exox&T 'vT
XR_D public static void log(int sMsg) &ZgB b { 2{zFO3i<3 System.err.println(sMsg); |q5R5mQ } h_4o4# } <">tB"="b N^A&DrMF /#M|)V*wn /* *P&ZE **TestMethod.java Hq h */ *p{wC
r package NetFox; GMLq3_' -E#!`~&V O0#wM-M public class TestMethod { DG&14c>g R=~+- ^O! U]lXw+& public TestMethod() DQ^yqBVgQ { ///xx/weblogic60b2_win.exe oJy ]n9 try{ [^B04x@ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); _ 97 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); w?A&X |