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/* b>Vs5nY! **SiteFileFetch.java ^Q2K0'm5 */ @*A(#U8p3 package NetFox; O_(J',++ import java.io.*; #^xiv/sV import java.net.*; ~wh8)rm ~)sb\o
WoesE:NiR public class SiteFileFetch extends Thread { W53i5u( 0y2iS't
|p.mA-81 SiteInfoBean siteInfoBean = null; //文件信息Bean YC*S;q long[] nStartPos; //开始位置 q^O{LGN long[] nEndPos; //结束位置 %+>I1G FileSplitterFetch[] fileSplitterFetch; //子线程对象 9~Q.[ A long nFileLength; //文件长度 k3^S^Bv\ boolean bFirst = true; //是否第一次取文件 7QQ1oPV boolean bStop = false; //停止标志 ~`8`kk8 File tmpFile; //文件下载的临时信息 f<0-'fGJd DataOutputStream output; //输出到文件的输出流 CZ|Y o &eK8v]|"W //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) jO!!. w public SiteFileFetch(SiteInfoBean bean) throws IOException y4P mL { j~Rh_\>Q siteInfoBean = bean; 6i{W=$RQ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); aHwrFkn tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Ms^,]Q1{ if(tmpFile.exists ()) 3u+~!yz { {jggiMwo.v bFirst = false; 1=W>zC read_nPos(); c_HYB/' } oAv L?2 else jDy { .VTHZvyn nStartPos = new long[bean.getNSplitter()]; ]>*Z 1g; nEndPos = new long[bean.getNSplitter()]; =GFlaGD } nyTfTn IjJ3CJ< 1w1(FpQO. khW3z*e# } w9c a2o+tR;H 2Hy $SSH public void run() ~(4cnD)BO { txTDuS //获得文件长度 *<s|WLMG //分割文件 /38^N|/Zr //实例FileSplitterFetch 80axsU^H0 //启动FileSplitterFetch线程 M0"xDvQ //等待子线程返回 0&c12W|B<L try{ YadyRUE if(bFirst) {@B<$g { /v=MGX@r nFileLength = getFileSize(); A!goR-J] if(nFileLength == -1) ECU:3KH>MF { ? 0nbvV5v7 System.err.println("File Length is not known!"); gQ,PG } /':kJOk<[ else if(nFileLength == -2) A5Y z| { :;)K>g,b System.err.println("File is not access!"); UT]LF#.( } F4Z+)'oDr, else LUw0MW(Moi { %3'80u6BCJ for(int i=0;i<nStartPos.length;i++) b^6Ooc/-k { V
mKMj' nStartPos = (long)(i*(nFileLength/nStartPos.length));
Hco[p+ } M(I 2M for(int i=0;i<nEndPos.length-1;i++) g2w0#- { b@z/6y! nEndPos = nStartPos[i+1]; hPD2/M
} dhsQfWg#} nEndPos[nEndPos.length-1] = nFileLength; }3=]1jH6 } ),dXaP[ } R279=sO,J v\0[B jhL? W[w8@OCNf //启动子线程 5A:b
\ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 1Cp5a2{ for(int i=0;i<nStartPos.length;i++) n\wO[l) { to]1QjW- fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), GC#3{71 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), b!ot%uZZ nStartPos,nEndPos,i); q\[f$==p Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); >%'|@75K fileSplitterFetch.start(); ^'6!)y# } yC6XO&:g // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 9q;+ Al^Z siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ^hRos // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", lUUeM\ nEndPos = " + nFileLength); |4ONGU*`E // fileSplitterFetch[nPos.length-1].start(); X0Xs"--} Fl<BCJY ()= //等待子线程结束 :a[L-lr`e //int count = 0; r;I3N+ //是否结束while循环 QJ-6aB boolean breakWhile = false; -HS(<V=a?k QcIa%lf K"#np!Y) while(!bStop) V!a\:%#^Y { @/E5$mX` write_nPos(); YRAWylm Utility.sleep(500); e>z3\4 breakWhile = true; pDr M8)r ORyFE:p$ H'&x4[J: for(int i=0;i<nStartPos.length;i++) >N{K)a { rRly0H if(!fileSplitterFetch.bDownOver) wh[XJ_xY { 11Pm lzy breakWhile = false; mJ)o-BV break; j%#n}H } <p-R{}8 } E+]gC if(breakWhile) ZGH2 break; 7rbl+:y2 ^<.mUaP ?8)_, //count++; m}'kxZTOm //if(count>4) CAX|[ // siteStop(); CES^
c-. k } 7=aF-;X3jj O*`] ]w] XjuAVNY System.err.println("文件下载结束!"); 9~SfZ,( } w|OMT>. catch(Exception e){e.printStackTrace ();} v\'Eo*4 } Pp*|EW 1 WIa4!\Ky! \|L ~#{a //获得文件长度 vxzh|uF public long getFileSize() TG=) KS { `lRZQ:27X int nFileLength = -1; F%UyFUz try{ N~=p+Ow[H URL url = new URL(siteInfoBean.getSSiteURL()); ts<5%{M( HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); C C;T[b& httpConnection.setRequestProperty("User-Agent","NetFox"); c0sU1:e0 C1:efa<wV `$ql>k-6C int responseCode=httpConnection.getResponseCode(); hl(M0cxEWP if(responseCode>=400) ' jf$3 { "W?<BpV~@! processErrorCode(responseCode); +ng8!k return -2; //-2 represent access is error {r?O>KDQf( } jSsbLa@
:,h47'0A PmZ-H> String sHeader; K.Nun)< vUk <z* 5A g4o for(int i=1;;i++) [y7BHikX) { !_3Rd S //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); dq+VW}[EO //Utility.log(in.readLine()); Z@nWx]iz sHeader=httpConnection.getHeaderFieldKey(i); ODyK/Q3 if(sHeader!=null) k1e0kxn { N,0l5fD~T if(sHeader.equals("Content-Length")) kAsYh4[ { f"\G"2C nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); (j@3=-%6 G break; 0
XxU1w8\V } s"7wG!yf } w] i&N1i else 56Z 1jN^U break; B[%FZm $`M } h:\WW;s[B } dO
=fbmK catch(IOException e){e.printStackTrace ();} u [5*RTE catch(Exception e){e.printStackTrace ();} TcPYDAa 5V;BimI b_ +dNoB Utility.log(nFileLength); 9*pH[vH 3J%(2}{y ;m`k#J? return nFileLength; uH!uSB2 } JKN0:/t7Q klmRU@D vPz$jeA //保存下载信息(文件指针位置) xdGmiHN private void write_nPos() A\nL(Nd { ;.>CDt-E] try{ $$ma1.t" output = new DataOutputStream(new FileOutputStream(tmpFile)); ca%s$' d output.writeInt(nStartPos.length); #usi1UWB#Q for(int i=0;i<nStartPos.length;i++) :y^0]In { 'id]<<F // output.writeLong(nPos); puEuv6F output.writeLong(fileSplitterFetch.nStartPos); iOXxxP%# output.writeLong(fileSplitterFetch.nEndPos); *{5p/}p } i P gewjx output.close(); 29p`G1n } \wwY?lOe catch(IOException e){e.printStackTrace ();} Q}zAC2@L catch(Exception e){e.printStackTrace ();} /UtCJMQ } Sqw:U|h\FS 2Hl0besm I-<U u2 //读取保存的下载信息(文件指针位置) TJjcX?:( private void read_nPos() :)hS-*P { VUAW/
try{ 8@y@} DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); }QrBN:a$( int nCount = input.readInt(); gx,BF#8} nStartPos = new long[nCount]; g$$i WC!S< nEndPos = new long[nCount]; {8`V5: for(int i=0;i<nStartPos.length;i++) D_mdX9-~ { U-!+Cxjs nStartPos = input.readLong(); Zt;3HY=y nEndPos = input.readLong(); l-4+{6lz } fP<Tvf input.close(); iG*@( } G>"=Af(t?Y catch(IOException e){e.printStackTrace ();} ?XOl>IO catch(Exception e){e.printStackTrace ();} 0*G
=~: } 6?GR+;/ |e49F u By[x 0 private void processErrorCode(int nErrorCode) =qG%h5]n { cXP*?N4Cf System.err.println("Error Code : " + nErrorCode); t6m&+N } {6}H}_(] \o}m]v
i Z{&dzc //停止文件下载 vw(X9xa public void siteStop() tgeX~. { !Q(x A,p bStop = true; j8gw]V/B: for(int i=0;i<nStartPos.length;i++) +$_.${uwV fileSplitterFetch.splitterStop(); Y.FqWJP=p n~`1KC4 KA^r,Iw } phk fPvL{ } Am>^{qh9 //负责部分文件的抓取 ;J<K/YdI **FileSplitterFetch.java 4I&e_b< 30 */ .%Pt[VQ package NetFox; l}\q }7\) &USKudXmb ]nmVT~lBe" import java.io.*; =Rv!c+? import java.net.*; N`o[iHUj \ V+04X" {DfXn1Cg0U public class FileSplitterFetch extends Thread { FZdZGK pCOtk'n {k:W?` String sURL; //File URL W_JFe(=3, long nStartPos; //File Snippet Start Position rt +a/:4+ long nEndPos; //File Snippet End Position z#DgoA int nThreadID; //Thread's ID E(%_aFx>/ boolean bDownOver = false; //Downing is over 9:[L
WT& boolean bStop = false; //Stop identical j_w"HiNBA FileAccessI fileAccessI = null; //File Access interface i6Zsn#Z7) _d<xxF^q kF,_o/Jc public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Cf&.hod { v2ab this.sURL = sURL; QY)hMo=|o8 this.nStartPos = nStart; Wycood* this.nEndPos = nEnd; Nj~3FL nThreadID = id; ePD~SO9* fileAccessI = new FileAccessI(sName,nStartPos);//定位 '+8`3[' } >v\t>
[9t g$CWGB*%lm TDqH"q0 public void run() )7`2FLG { a8Va3Y while(nStartPos < nEndPos && !bStop) o'#ow(X { x~;1CB eW"L") O%hmGW4 try{ Ej;BI#gx= URL url = new URL(sURL); on0MhW HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); r0xmDJ@y httpConnection.setRequestProperty("User-Agent","NetFox"); ]; CTr0 String sProperty = "bytes="+nStartPos+"-"; C~o\Q#*j httpConnection.setRequestProperty("RANGE",sProperty); 6 +2M$3_U Utility.log(sProperty); JJE3\
T ?HG}(2 j*7#1<T InputStream input = httpConnection.getInputStream(); -9f+O^x //logResponseHead(httpConnection); lPBWpHX 4ju=5D];
7~f"8\ byte[] b = new byte[1024]; C*C;n4 AT int nRead; JI5%fU%O#n while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) k/lU]~PE { [v%j? nStartPos += fileAccessI.write(b,0,nRead); ZYMacTeJjg //if(nThreadID == 1) D~^P}_e. // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); k1h>8z.Tg } 5w^6bw){ ~R+,4 @,\J\ rb Utility.log("Thread " + nThreadID + " is over!"); C2a2K={ bDownOver = true; O_S%PX //nPos = fileAccessI.write (b,0,nRead); g##yR/L } QT<\E`v catch(Exception e){e.printStackTrace ();} (p?7-~6|: } 3_ P<0% } Yvn*evO4 R?Ou=p
. >@ : m#d //打印回应的头信息 !yQ%^g` public void logResponseHead(HttpURLConnection con) {0Jpf[.f { J? 4E Hl for(int i=1;;i++) ^T< HD { UgP String header=con.getHeaderFieldKey(i); P/ XO5` if(header!=null) k
x?m "a% //responseHeaders.put(header,httpConnection.getHeaderField(header)); fvNj5Vq: Utility.log(header+" : "+con.getHeaderField(header)); #`5>XfbmQ( else Z;"YUu[( break; 7]}2`^9 } )?$zY5 } Q&?^eOI( N~)RR {$w Kt*kARN? public void splitterStop() N'@E^
rYc { 6Qx[W>I bStop = true; {k15!(:i~a } cAQ_/> h(4&!x
$p)e.ZMgE } \;FE@ hf1h*x^J N2Qb+ /* :RG=3T[ **FileAccess.java
']__V[ *//文件访问(定位,写) o+%($p package NetFox; tVr^1Y import java.io.*; \jCN ]A< JE=3V^k "">{8 public class FileAccessI implements Serializable{ >V$
S\" o ?`LZd:{ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 $a.,;: RandomAccessFile oSavedFile; %s),4 long nPos; Id<O/C k"pN *a2-Vte public FileAccessI() throws IOException k+%c8w 9 { gnWEsA\! this("",0); G]k+0&X } 6Z>G%yK `Re{j{~s *Me&>"N" public FileAccessI(String sName,long nPos) throws IOException HU47S { (p!w`MSv oSavedFile = new RandomAccessFile(sName,"rw"); ypy this.nPos = nPos; =}OcMM`f oSavedFile.seek(nPos); `7$Sga6M } h}n?4B~Gi ["~T)d' 8}.V[,]6 public synchronized int write(byte[] b,int nStart,int nLen) (/e[n.T { *Kmo1>^ int n = -1; |FP@NUX\ try{ Cb
i;CF\{ oSavedFile.write(b,nStart,nLen); k*e$_ n = nLen; ]uZaj?%J< } Dk#4^`qp1 catch(IOException e) pdq5EUdS { SpA-E/el e.printStackTrace (); .:9XpKbt }
*Q!I^]CR qL2Sv(A Z! yP*oRV%uX return n; HvJ-P# } B{2WvPX~q eEZZ0NNe; {D`_q| } s#4Q?<65u %j.
*YvveW #QM9!k@9k /* =j^wa') **SiteInfoBean.java rL23^}+^` */ `-yiVUp1:z package NetFox; W+'f|J= 0kxe5*-| iM +p{/bN public class SiteInfoBean { K[R.B!;N .gs:.X)TG9 R&@NFin private String sSiteURL; //Site's URL 8!|LJI private String sFilePath; //Saved File's Path !D~\uW1b private String sFileName; //Saved File's Name /"
6Gh' private int nSplitter; //Count of Splited Downloading File Nf1&UgX ' )~G2Ys jm&PGZ#n=R public SiteInfoBean() J5L[)Gd)D {//nSplitter的缺省值为5 aBT8mK -. //default value of nSplitter is 5 0RGqpJxk this("","","",5); CQh6;[\: } |TRl>1rv ur JR[$p VX,@Gp_' m public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Ur,{ZGm { "VI2--%v3 sSiteURL= sURL; (Nn)_caVb sFilePath = sPath; w|(
ix;pK sFileName = sName; miEf<<L#z this.nSplitter = nSpiltter; (&oT6Ji Hq0O!Zv ey ?paT } 1(vcM iL;{]A'0 t`G<}t public String getSSiteURL() sHm:G_ { PmlQW!gfBi return sSiteURL; 6T-iBJT } QB6.
o6 6(-c$d`C.0 ,'a[1RN public void setSSiteURL(String value) a{+;&j[! { ,.TwM;w= sSiteURL = value; #)z7&nD } l;vA"b=] GEZ!z5";BQ n{E9p3i public String getSFilePath() =0_((eXwf { l(uV@_3 return sFilePath; )@E'yHYO> } TQsTL2a Z1sRLkR^ l^;=0UR_ public void setSFilePath(String value) *$9Rb2}kK { t&nK5p95( sFilePath = value; b0h >q $b } `V=F>s$W Oi$$vjs2 C`b)}dY public String getSFileName() gM_MK8py { :8l#jU`y return sFileName; ]:Sb#=,!&! } g]m}@b6(h Mk|*=#e; yCZ[z
A public void setSFileName(String value) Vh8RVFi;c { ](SqLTB+? sFileName = value; 9B2`FJ } s,]z6L0 +9]CGYj /A>1TPb09" public int getNSplitter() sp&g { XE?,)8 return nSplitter; ;-d2~1$ } y0\ = F h45RwQ5Z =`MMB|{6 public void setNSplitter(int nCount) ?Y'r=Q{w { LT6VZ,S nSplitter = nCount; %)PQomn? } O^<\]_l } ({9P,
D~2 H;Cv]- k*o>ZpjNH /* ^s6C']q *O **Utility.java % QI6`@Y" */ N7}yU~j^ package NetFox; 'jjJ[16"d 1j\wvPLr =801nZJ public class Utility { HRW}Yl @+(a{%~7y :AM_C^j~
D public Utility() $S2kc$'F { GdtR /1 _{48s8V 8e}8@[h } zZI7p[A[3 nWsR;~pK //线程睡眠 Vho^a:Z9}W public static void sleep(int nSecond) ^9 {r2d&c { ZY-mUg try{ _T (MMc Thread.sleep(nSecond); Z$2Vd`XP } wZ\% !#}7 catch(Exception e) #u$ Z/, { A^@,Ha
e.printStackTrace (); VQHQvFRZ) } GL8 N!, } (5&l<u"K~ &E$:^a4d //日志 p^i]{"sjbU public static void log(String sMsg) *kKdL { jWJ/gv~ $ System.err.println(sMsg); XYHVw) } *&vi3#ur nQM7@"R un(fr7NW public static void log(int sMsg) q($fl7}Y { b@yFqgJ_ System.err.println(sMsg); 4!0nM|~ } q.69<Rs } ?&se]\ KSy. Eumdv#Qg /* 5H
|<h **TestMethod.java 9Li.B1j */ _~_6qTv-d package NetFox; 6HxZS+],c kJ:zMVN ;P2(C >| public class TestMethod { <]kifiN# ?8aPd"x jG~UyzWH; public TestMethod() V'XvwO@ { ///xx/weblogic60b2_win.exe rBovC try{ z{dn SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 9S$?2z".2 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); W.VyH|? SiteFileFetch fileFetch = new SiteFileFetch(bean); 3-$w5O3} fileFetch.start(); HP*AN@>Kw } ffE&=eh) catch(Exception e){e.printStackTrace ();} uq_h8JH$ 6v9A7g;4. /dt'iai~l } e \ rb @iD5X.c 8et.A public static void main(String[] args) dI|`"jl# { vV+>JM6<K new TestMethod(); {;j@-=pV } _=68iDXm } >Gyg`L\ 点击下载更多相关资料
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