-
UID:2537
-
- 注册时间2006-05-09
- 最后登录2020-05-29
- 在线时间3小时
-
- 发帖8
- 搜Ta的帖子
- 精华
0
- 铜板1641
- 人品值95
- 贡献值0
- 交易币0
- 好评度8
- 信誉值0
- 金币0
-
访问TA的空间加好友用道具
- 发帖
- 8
- 铜板
- 1641
- 人品值
- 95
- 贡献值
- 0
- 交易币
- 0
- 好评度
- 8
- 信誉值
- 0
- 金币
- 0
- 所在楼道
|
/* ?WP *At0 **SiteFileFetch.java u|"y&>!R- */ 6e>P!bo package NetFox; _]v@Dq VP import java.io.*; @+{F\SD\ import java.net.*; 4_P6P mCe"=[ w8D6j%C public class SiteFileFetch extends Thread {
:al
,zxs B3|G&Kg Xhs*nt%l SiteInfoBean siteInfoBean = null; //文件信息Bean -}1TT@ long[] nStartPos; //开始位置 MWv(/_b long[] nEndPos; //结束位置
od)ssL&E~ FileSplitterFetch[] fileSplitterFetch; //子线程对象 []jbzVwS2 long nFileLength; //文件长度 F'-,Ksn boolean bFirst = true; //是否第一次取文件 L1#_ boolean bStop = false; //停止标志 s:K'I7_#@ File tmpFile; //文件下载的临时信息 JU#m?4g DataOutputStream output; //输出到文件的输出流 'gtcy _WR/]1R //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) p\P) public SiteFileFetch(SiteInfoBean bean) throws IOException =w!2R QB { Wl7S<>hg4 siteInfoBean = bean; Q?V+
0J //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); */HW]x|?V~ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 9m.MGJbQ_f if(tmpFile.exists ()) Wn{MY=5Y { v|MT^. bFirst = false; %'uei4 read_nPos(); /|8rVYSs } a/</P
|UG else ?AO22N|j { K$l@0r ~k nStartPos = new long[bean.getNSplitter()]; j}O qWX>/ nEndPos = new long[bean.getNSplitter()]; ]N2!
'c } OZ33w-X< 9#>nFs"H yl&s!I zR4]buHnE } }eF
r,bJ ,D'm#Fti .D;6
r4S public void run() 9}_' { i;atYltEJ2 //获得文件长度 )HcLpoEi //分割文件 FTr'I82m( //实例FileSplitterFetch W^7yh&@lU //启动FileSplitterFetch线程 jgiS/oW //等待子线程返回 f@gvDo]Y try{ b0/YX@ if(bFirst) @?jtB { ~0h@p4 nFileLength = getFileSize(); &=f?:UZ% if(nFileLength == -1) Be9,m!on { xs&xcRR" System.err.println("File Length is not known!"); c39j|/!;Y } /~Bs5f.]? else if(nFileLength == -2) MsZx 0] { $o0.oY#
System.err.println("File is not access!"); N/'8W9#6 }
peHjKK else ,!, tU7-H { ^?wR{q"8 for(int i=0;i<nStartPos.length;i++) M.xZU\'ty { puLgc$? nStartPos = (long)(i*(nFileLength/nStartPos.length)); Fv*QcB9K } ]Ok'C"V(j for(int i=0;i<nEndPos.length-1;i++) (S4HU_,88 { L[Ot$ nEndPos = nStartPos[i+1]; Nw*F1*v` } 61b*uoq0w? nEndPos[nEndPos.length-1] = nFileLength; CiGXyhh } MsBm0r`a } =av0a! ;l1.jQh 8rx|7 //启动子线程 as'yYn8 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; `*elzW for(int i=0;i<nStartPos.length;i++) ak-agH { [?hvx} fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [Y~~C J siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), rB{w4 nStartPos,nEndPos,i); &4+|{Zx0 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ZyDNtX% fileSplitterFetch.start(); }n
"5r(*^@ } )t@9!V // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), alB'l siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); q7<d|s // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", OR*JWW[] nEndPos = " + nFileLength); C/QmtT~`e // fileSplitterFetch[nPos.length-1].start(); t|V<K^ &AOGg\ )0/*j]Kf //等待子线程结束 mE5{)<N:C //int count = 0; AorY#oq //是否结束while循环 L N
Fe7<y boolean breakWhile = false; -EE'xh-zD `U b*rOMu
W~2,J4= while(!bStop) M^Y[Y@U=p { i39ZBs@ write_nPos(); <i4]qO(0u Utility.sleep(500); /t<
& breakWhile = true; 2Wu`Dp;&l [\#ANA" Vfga%K%l F for(int i=0;i<nStartPos.length;i++) y631;dU { R<Mc+{*> if(!fileSplitterFetch.bDownOver) %8D>aS U { g1|Pyt{ breakWhile = false; oH+PlL break; /Jc{aw } 8nu!5 3 } qHp2; if(breakWhile) 0O,;[l break; Zs{7km LSA6*Q51 b_ak@LYiu //count++; UWEegFq* //if(count>4) U65l o[ // siteStop(); :IBP " } \O4s0*gw ]hS<"=oj w|]Tt=" System.err.println("文件下载结束!"); *;9H \% } vanV |O catch(Exception e){e.printStackTrace ();} %qz-b. } br
Iz8] fkp(M QNINn>2 //获得文件长度 ['Lo8 [ public long getFileSize() &Z[+V)6,, { #h^nvRmON int nFileLength = -1; (3mL!1\ try{ p<(a);<L URL url = new URL(siteInfoBean.getSSiteURL()); zn 0y`9!n? HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); <Vk}U httpConnection.setRequestProperty("User-Agent","NetFox"); @IsUY(Gu =
g
& t6\H int responseCode=httpConnection.getResponseCode(); %hN>o) if(responseCode>=400) kmC0.\ { g%"SAeG<K processErrorCode(responseCode); 6WQN!H8+^ return -2; //-2 represent access is error z[1uub,)1 } ?g{[U0) \XmplG: k kAg17 ^ String sHeader; {q`8+$Z; >n3GvZ5% ]
1pIIX} for(int i=1;;i++) p<H_]|7$7U { 1t^y?<) //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); x}pH'S7 //Utility.log(in.readLine()); G#e]J;
sHeader=httpConnection.getHeaderFieldKey(i); \t1#5 if(sHeader!=null) kJJiDDL0;* { MymsDdQ] if(sHeader.equals("Content-Length")) o]4BST(A { &_-=(rK nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 5I2 h(Td break; '%t$mf!nV } %;ED}X } HBR/" m else gEsD7]o(= break; 8)eRm{ } U ->vk{v } APF`b catch(IOException e){e.printStackTrace ();} 6]%=q)oL[ catch(Exception e){e.printStackTrace ();} P8ej9ULX, @}H'2V MYvz%7 Utility.log(nFileLength); t2{(ETV .eg'Z@o *5BVL_:~J return nFileLength; jd ;)8^7K } Qc-W2% }wn|2K' ?m2FN<S //保存下载信息(文件指针位置) nw-- private void write_nPos() 4cSs=|m?+ { ! PGCoI try{ {CR`~)v& output = new DataOutputStream(new FileOutputStream(tmpFile)); qjkWCLOd output.writeInt(nStartPos.length); }NwmZw>_ for(int i=0;i<nStartPos.length;i++) )e PQxx { Cj3Xp~ // output.writeLong(nPos); 9 c9$cnQ output.writeLong(fileSplitterFetch.nStartPos); xj U0& output.writeLong(fileSplitterFetch.nEndPos); hz;SDaBA } `Zo5!"' output.close(); jrN 5l1np } #e-7LmO~ catch(IOException e){e.printStackTrace ();} c^1JSGv catch(Exception e){e.printStackTrace ();} OfBWf6b } aC1 xt( 89D`!`Ah] 3{co.+ //读取保存的下载信息(文件指针位置) =/|GWQj private void read_nPos() =Xr{ Dg { ,e1c,} try{ uGXvP(Pg' DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); SGZYDxFC@ int nCount = input.readInt(); W`_Wi*z4 nStartPos = new long[nCount]; 3=ME$%f nEndPos = new long[nCount]; rjcH[U( for(int i=0;i<nStartPos.length;i++) XS@iu,uO { ?:60lCqj nStartPos = input.readLong(); ;WN%tI) nEndPos = input.readLong(); Ja*,ht(5 } >BO!jv!a input.close(); cp8w
_TPU } tQ;Fgv8Y! catch(IOException e){e.printStackTrace ();} st "@kHQ3 catch(Exception e){e.printStackTrace ();} OI)k0t^;D } 0K^@P#{hd D&mPYxXL `{"V(YMEV private void processErrorCode(int nErrorCode) AM!P?${a { av(qV$2 System.err.println("Error Code : " + nErrorCode); 7eM6 B#rI } EMH-[EBx EiM\`"o ~8k`~t! //停止文件下载 6I=d0m.io public void siteStop() gPKO-Fsd" { |Zn,|-iW bStop = true; %iIr %P? for(int i=0;i<nStartPos.length;i++) l@UF-n~[ fileSplitterFetch.splitterStop(); u_ :gqvC= 9} C(M?d L)|hjpQ } FN sSJU3ld } U/U_q-z] //负责部分文件的抓取 nrpbQ(zI* **FileSplitterFetch.java /8_x]Es/ */ p|;#frj package NetFox; E?K(MT&@ tx1TtWo 2-g 5Gb2| import java.io.*; d<\X)-" import java.net.*; +BI%.A`2 5 YIk <Vyl*a{% public class FileSplitterFetch extends Thread { /*S6 /# }F V_jJ '#lEUlB String sURL; //File URL 3WkrG.$[b long nStartPos; //File Snippet Start Position ,0Udz0 long nEndPos; //File Snippet End Position REJBm int nThreadID; //Thread's ID }darXtZKkK boolean bDownOver = false; //Downing is over }236{)DuN boolean bStop = false; //Stop identical Pa\yp?({q FileAccessI fileAccessI = null; //File Access interface G7-.d/8|^ W}(xE?9& xWQQX public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException M _Lj5` { W7V#G(cpU this.sURL = sURL; sDHFZ:W this.nStartPos = nStart; `kOp9(Q{ this.nEndPos = nEnd;
_3KfY nThreadID = id; IU}g[OCu fileAccessI = new FileAccessI(sName,nStartPos);//定位 ]tK<[8Y } gavf$be
g( eA? w~9Y=|YI7 public void run() [9CBTSr { +>mU4Fwp while(nStartPos < nEndPos && !bStop) Z79Y$d>G<E { %.IW H9P7 |oOA;JC)( d5LL(
" try{ [DSzhi] URL url = new URL(sURL); J72kjj&C HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ]CnT4[f! httpConnection.setRequestProperty("User-Agent","NetFox"); _B==S4^/yU String sProperty = "bytes="+nStartPos+"-"; [QT
H ~ httpConnection.setRequestProperty("RANGE",sProperty); UUgc> Utility.log(sProperty); ^j_t{h)W(0 PTA_erU vN)l3 InputStream input = httpConnection.getInputStream(); QN~9O^ //logResponseHead(httpConnection); -Ze2]^#dl -S$Y0FDV 8g_GXtn(z byte[] b = new byte[1024]; /Q9iO&Vu int nRead; @2A&eLwLH while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) g9gyx/'* { Bd13p_V"6 nStartPos += fileAccessI.write(b,0,nRead); j =b-Y //if(nThreadID == 1) ?0+J"FH# W // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ?B4X&xf.D } Fmrl*tr H]f8W]"c[ M059"X=" Utility.log("Thread " + nThreadID + " is over!");
-S}^b6WL bDownOver = true; Q
S.w#"X[ //nPos = fileAccessI.write (b,0,nRead); Z2\Xe~{ } 4L6'4 t"s catch(Exception e){e.printStackTrace ();} 9fqCE619a } z"@UNypc, } 8nRxx`U\q ?)c9!hR /kd6Yq(y //打印回应的头信息 ud,_^Ul public void logResponseHead(HttpURLConnection con) 0R?LWm
j { ,#=;V"~9 for(int i=1;;i++) 2`/p V0 { EtvYIfemr String header=con.getHeaderFieldKey(i); =g^JJpS if(header!=null) mt3j$r{_ //responseHeaders.put(header,httpConnection.getHeaderField(header)); G`R2=bb8 Utility.log(header+" : "+con.getHeaderField(header)); AqP7UL else ]u O|YLWp break; <NX6m|DD } IY9##&c3> } ZNbb8v ulnlRx PEAo'63$ public void splitterStop() T
.L>PL?= { mOi 8W,2 bStop = true; {BJn9B } J{5&L &4 GCA?sFwo> |/35c0IM } y 4jelg SA16Ng k39;7J /* &!FWo@ **FileAccess.java s3l:ST *//文件访问(定位,写) 1{X ;&y package NetFox; mo3HUXf}8 import java.io.*; , 8F(R%v ZzuWN& B mxBbg public class FileAccessI implements Serializable{ APu cA yY42+%P //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 |nj,]pA RandomAccessFile oSavedFile; wi/dR}*A long nPos; |d8x55dk :s OsG&y iPPW_Q9x public FileAccessI() throws IOException 2f$6}m'Ad { RBzBR)@5 this("",0); U:
Q&sq8U } VlQaT7Q n~NOqvT < a5xp[TlXn. public FileAccessI(String sName,long nPos) throws IOException `[Xff24(eb { A5> ,e| oSavedFile = new RandomAccessFile(sName,"rw"); |cE 69UFB this.nPos = nPos; $>fMu oSavedFile.seek(nPos); ^h@1t FF } :|?nz$ WwM/M!98J Ui`Z>,0sFi public synchronized int write(byte[] b,int nStart,int nLen) (AnM_s { Xm2p<Xu8h int n = -1; UjU*`}k3 try{ tZ]/?+1G oSavedFile.write(b,nStart,nLen); }[OOkYF#r n = nLen; zLiFk<G@Xi } 7R=cxD& catch(IOException e) -?$Hr\ { z!GLug*j` e.printStackTrace (); \L:;~L/ } -q.tU*xf' )!&7X L[ oopACE> return n; g"iLhm`L } g0D(:_QXp: ,!s;o6|*y \We\*7^E } 8 3wa{m: ]%PQ3MT. (E*eq-8 /* 4j'cXxo **SiteInfoBean.java $*`=sV!r */ BM&.Tw|x package NetFox; @;we4G5 czV][\5 T.sib&R public class SiteInfoBean { *3A[C-1~. ?p8(Uc#73 67/&.d! private String sSiteURL; //Site's URL OA_Bz" private String sFilePath; //Saved File's Path 5 :ZM-kZT private String sFileName; //Saved File's Name ']hB_4v private int nSplitter; //Count of Splited Downloading File
Wb/q&o Ty21-0F X;I;CZ={ public SiteInfoBean() sacaL4[_< {//nSplitter的缺省值为5 jz%%r Q( //default value of nSplitter is 5 (gv1f this("","","",5); A@X&dy } .*N,x0B( E K)7g~ VE<&0d< public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) m\88Etl@ { o#-K,|- sSiteURL= sURL; JEK6Ms;)A sFilePath = sPath; R)3P"sGuN sFileName = sName; rVx%"_'*- this.nSplitter = nSpiltter; #mNM5(o i%8I (F w>:~Ev] } ]e'Ol$3U9= MHv2r S'NZb!1+ public String getSSiteURL() X/_e#H0
{ w~eF0{h return sSiteURL; QGYO{S } ?X1vU0c
uj_ OWre DA_[pR public void setSSiteURL(String value) Sxrbhnx { 4,!S?:7 sSiteURL = value; G H
N } meHAa` ]E1aIt Qo!/]\ public String getSFilePath() CF`tNA3fxm { d3fF|Wp1 return sFilePath; S(^*DV } ]OE{qXr{ dsKEWZ
= 3McBTa! public void setSFilePath(String value) \>8"r,hG| { +1Ha,Ok sFilePath = value; li4rK<O } Ng?n}$g* EROf%oaz= T [
`t?, public String getSFileName() Q7X6OFl? { &wbe^Wp return sFileName; 7-"ml\z } \$o!M1j uFM]4v3 uUUj?% public void setSFileName(String value) k#8,:B2 { p m+_s]s, sFileName = value; (c `t'e } pJC@}z^cw PK#; \Zw _7(>0GY public int getNSplitter() aHosu=NK { Ctpr. return nSplitter; #%4-zNS } jg]_'^pVzr [:x^ffs gdupG public void setNSplitter(int nCount) / vI sX3v { JG xuB*} nSplitter = nCount; PiMW29B^ } PpPg ~ix* } #/NZ0IbHk VC
"66\d& eeX^zaKl] /* }(h_ztw **Utility.java >t|u 8/P */ =.9L/74@ package NetFox; Xqt3p6 uXiAN#1 <StyO[ public class Utility { G992{B !/W[6'M#p *ip2|2G$ public Utility() 8=rD'* { e_Na_l] EQDsbG0x c"w}<8
} [hs_HYqJ _&TA|Da //线程睡眠 %./vh=5) public static void sleep(int nSecond) pqmS
w { UPs*{m try{ ?{W@TY@S Thread.sleep(nSecond); 29DYL } -lr)z=}) catch(Exception e) eMk?#&a) { D9
~jMcX e.printStackTrace (); 8_8r{a<xW } 8X":,s! } ;Wa4d`K V)M+dhl //日志 Q}p+/-U\ public static void log(String sMsg) }D_h*9 { ~|e?@3_G System.err.println(sMsg); RG [*:ReB9 } %N#8D<ULd Ek|#P{! >p4#AfGF public static void log(int sMsg) M>+FIb( { &kKopJH System.err.println(sMsg); 6/^$SWd2 } iaAVGgA9+ } gUf-1#g4\` ^vXMX^* }gQ FWT /* Xx_v>Jn! **TestMethod.java Y !e */ 0|<ER3xkx package NetFox; vzl+0" tu}AJ uMl.}t2uYu public class TestMethod { *I)oDq3 (uV~1 Jh2eo+/% public TestMethod() _=9o:F { ///xx/weblogic60b2_win.exe FB{4& ; try{ vL"U=Q+/eY SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); QAYhAOS|e //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); pI2g\cH> SiteFileFetch fileFetch = new SiteFileFetch(bean); LaL.C^K fileFetch.start(); N S*e<9 } &z[39Q{~ catch(Exception e){e.printStackTrace ();} NF`WA-W8@ ?I{pv4G: ]O'dwC } H^cB?i nN!/ Kbjt CI7 public static void main(String[] args) CR*R'KX D% { EgO=7?(pW new TestMethod(); Hn"xn79nc } __HPwOCG7 } e;KZTH; 点击下载更多相关资料
|