-
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
|
/* <XLaJ;j **SiteFileFetch.java BSMb(EnqX */ Led\S;pl package NetFox; ]_(hUj._ import java.io.*; Sesdhuy.@ import java.net.*; @.7/lRr@bp }W'j Dz7O [p6:uNo public class SiteFileFetch extends Thread { ]B )nN': c?CD;Pk rx9*/Q0F SiteInfoBean siteInfoBean = null; //文件信息Bean F9eEQ{L long[] nStartPos; //开始位置 ?7NSp2aq2A long[] nEndPos; //结束位置 b3%x&H<j FileSplitterFetch[] fileSplitterFetch; //子线程对象 MZ}0.KmaZ long nFileLength; //文件长度 T*/I4" boolean bFirst = true; //是否第一次取文件 r{.pXf boolean bStop = false; //停止标志 j;.P File tmpFile; //文件下载的临时信息 B}TY+@ DataOutputStream output; //输出到文件的输出流 i6HRG\9nU ~qqxHymc //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) <<LLEdB public SiteFileFetch(SiteInfoBean bean) throws IOException bRu9*4t { kqKT>xo4EZ siteInfoBean = bean; 5)< Y3nU~ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 48wt tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); W7n^]~V if(tmpFile.exists ()) YA
pC|R,^ { T^;b98* bFirst = false; N*36rR$^ read_nPos(); _ ]5UuIMl } PR"x&JG@ else fof}I:vO { Y#c439 & nStartPos = new long[bean.getNSplitter()]; MtL<)?HQ nEndPos = new long[bean.getNSplitter()]; %j^QK>% } @K!JE w\ @ovaOX
7V5c`:" eHvUgDt } l 8?C[,K% :jv(-RTI L'Cd`.yVO public void run() A4,%l\di< { BlpyE[h
T //获得文件长度 JE}VRMNr //分割文件 X`_tm3HC //实例FileSplitterFetch 5[)5K?% //启动FileSplitterFetch线程 bK6^<,~ //等待子线程返回 6MM\nIU)/ try{ BR|0uJ.M if(bFirst) ].rKfv: { 5 <k)tF% nFileLength = getFileSize(); w\i]z1 if(nFileLength == -1) U3_ O}X+ {
*eHa4I System.err.println("File Length is not known!"); |?J57( } *DIY;)K else if(nFileLength == -2) *=oO3c0|b, { 4AEw[(t System.err.println("File is not access!"); 'GezIIaH } Jd/d\P else d,?D '/ { )A*53>JV for(int i=0;i<nStartPos.length;i++) Z e>R@rK { w#)u+^ - nStartPos = (long)(i*(nFileLength/nStartPos.length)); T(u;<}e@[ } +JYb)rn$^ for(int i=0;i<nEndPos.length-1;i++) tRI<K { "y~*1kBu nEndPos = nStartPos[i+1]; q`mxN!1[ } sDBSc:5+e nEndPos[nEndPos.length-1] = nFileLength; ~8&->?{ } ! 7V>gWhR } .'o=J`| Eb~vNdPo Ag2~q //启动子线程
}&+,y<> fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; _*UI}JtlS for(int i=0;i<nStartPos.length;i++) :q3w;B~ { 3:Nc`tM_ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), !2Ompcr1 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 1\,k^Je7 nStartPos,nEndPos,i); Gjeb)Y6N Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); g"" 1\rc= fileSplitterFetch.start(); (b~l.@xh } \},H\kK+^ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), -3yK>\y=| siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 5 ph CEKt; // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", rZwSo]gp nEndPos = " + nFileLength); (z8ZCyq7r[ // fileSplitterFetch[nPos.length-1].start(); 6h5g!GQD ! (lF#MG} 41=H&G& //等待子线程结束 %r.OV_04 //int count = 0; &I=o1F2B) //是否结束while循环 i/*)1;xsk boolean breakWhile = false; dH5*% syLdm3d| <gi~:%T while(!bStop) :Ni#XZ{F-/ { cQ<|Of write_nPos(); D(Rr<-( Utility.sleep(500); V+D5<nICr breakWhile = true; >'Lkn2WI UH0l8ixc {,uSDIOj$ for(int i=0;i<nStartPos.length;i++) rb@[Edj { +a*Ic8* if(!fileSplitterFetch.bDownOver) >Z*b0j { ZDaHR-%Y breakWhile = false; =Pn"nkpML break; ]e-QNI } s%y<FXUj } j~Fd8]@ if(breakWhile) [Y!HQ9^LEp break; XM5)|D h/A\QW8Sd 7L/LlO/ //count++; +dLUq2 //if(count>4) ShVR{gIs // siteStop(); Wn6m$ = } ]r!|@AWrQ\ bBML +0a E>
pr})^w System.err.println("文件下载结束!"); Z] r9lC } +JG05h%' catch(Exception e){e.printStackTrace ();} k@%5P-e} } [mwqCW& 1P*GIt2L 4y}z+4 //获得文件长度 [ <d~b*/ public long getFileSize() =e
1Q>~ { N/WtQSl int nFileLength = -1; }@6yROy.
try{ j<)$ [v6 URL url = new URL(siteInfoBean.getSSiteURL()); !nL94:8U HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ?uc]Wgw"s httpConnection.setRequestProperty("User-Agent","NetFox"); NG3:= >A]l|#Rz Uu+ibVM$ int responseCode=httpConnection.getResponseCode(); a!6r&<s=E if(responseCode>=400) SJ22 { cM9>V2:P processErrorCode(responseCode); %4rlB$x return -2; //-2 represent access is error xe6V7Wi/Tt } KXx;~HtO gktlwiCZ X ]&`"Z] String sHeader; 82r{V:NCK) !7~4`D
c6U 2vB,{/GXP for(int i=1;;i++) ^y ', l { d<
XY"Y% //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); p cUccQ //Utility.log(in.readLine()); / QL<>g sHeader=httpConnection.getHeaderFieldKey(i); cahlYv' if(sHeader!=null) 'bZw-t!M@ { n::i$ZUdK if(sHeader.equals("Content-Length")) =;n>#< { ^"4?Q nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); jJYCGK$= break; }Gb^%1%M } ()8=U_BFz } NE`;=26c else tjV63`LD break; v@2?X4n } B^/Cx } 0Z((cI\J catch(IOException e){e.printStackTrace ();} .
P44t catch(Exception e){e.printStackTrace ();} [`h,Ti!m< 8 rE` bg9_$laDi Utility.log(nFileLength); dUn]aS [Z'4YXS bZK`]L[ return nFileLength; %NlmLWF. } SmyJ@.L" 4
}_}3. u-n$%yDS //保存下载信息(文件指针位置) Z$Ps_Ik private void write_nPos() $hk_v~zM { >>R)?24,< try{ ;1,#rTs output = new DataOutputStream(new FileOutputStream(tmpFile)); ZFX}=?+ output.writeInt(nStartPos.length); :+^`VLIf for(int i=0;i<nStartPos.length;i++) N8r+Q%ov { `.VkR5/ // output.writeLong(nPos); PMQ31f/zf output.writeLong(fileSplitterFetch.nStartPos); c}=[r1M* output.writeLong(fileSplitterFetch.nEndPos); &,XPMT } |M<R{Tt}nf output.close(); }
-hH2 } \sVzBHy d catch(IOException e){e.printStackTrace ();} EG=U](8T catch(Exception e){e.printStackTrace ();} },5LrX`L } R 'mlKe x W^:g_ 6xh-m //读取保存的下载信息(文件指针位置) XxB% private void read_nPos() |QH )A { z} VCiS0 try{ B%[#["Ol DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); |SJ%Myy int nCount = input.readInt(); ^CDh! ) nStartPos = new long[nCount]; RKs_k`N0 nEndPos = new long[nCount]; .$G^c for(int i=0;i<nStartPos.length;i++) j\.pS^+ { ^=cXL nStartPos = input.readLong(); /xA`VyHO nEndPos = input.readLong(); h*[sV } W89J]#v)k input.close(); .d)H2X } wE <PXBl\b catch(IOException e){e.printStackTrace ();} M@.?l=1X catch(Exception e){e.printStackTrace ();} :e_yOT}} } lQ.3_{"s |>I4(''} kP~ ;dJD private void processErrorCode(int nErrorCode) 9fSX=PVRmQ { uTrGb:^ System.err.println("Error Code : " + nErrorCode); rPW9lG } cz>`$Zz c$hoqi |tD y3V47J2o //停止文件下载 t&bE/i_T public void siteStop() .|kp`-F51 { =6w(9O bStop = true; R&R{I/;i*. for(int i=0;i<nStartPos.length;i++) W9SEYkg fileSplitterFetch.splitterStop();
C%Op[H3 DGAg#jh 37,)/8]lG } `jFvG\aC } a<D]Gz^h //负责部分文件的抓取 [;INVUwG^ **FileSplitterFetch.java MES| iB */ I1Gk^wO package NetFox; ;{>-K8=>$ U
&W}c^# Cd'SPaR import java.io.*; >\!>CuU import java.net.*; }xzbg ~hA;ji|I oakm{I|k} public class FileSplitterFetch extends Thread { +@oo8io Uefw 0l %|2}a String sURL; //File URL RE:$c!E! long nStartPos; //File Snippet Start Position Riz!HtyR long nEndPos; //File Snippet End Position &4l>_ int nThreadID; //Thread's ID 9=^4p=1J boolean bDownOver = false; //Downing is over .l&<-l;UQ boolean bStop = false; //Stop identical Ed~2Qr\65 FileAccessI fileAccessI = null; //File Access interface D8_-Dvp7H [W,maTM" +4p gPv public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Vt,"5c { I:#Es. this.sURL = sURL; O/Wc@Ln this.nStartPos = nStart; (hX}O> this.nEndPos = nEnd; & 5YI!; q, nThreadID = id; al\ R(\p| fileAccessI = new FileAccessI(sName,nStartPos);//定位 cvf#^Cu
} S)\%.~ n ep"54o5=d C,m
o4,Q public void run() 4q5bW+$Xj { ?l<u %o while(nStartPos < nEndPos && !bStop) n\y%5J+ {
hG!"e4 ((%g\&D ^t\AB)(8 try{ DPsf] URL url = new URL(sURL); r5?qz<WW~ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 2L_ts= httpConnection.setRequestProperty("User-Agent","NetFox"); bMw)>4 String sProperty = "bytes="+nStartPos+"-"; lTv_%hUp httpConnection.setRequestProperty("RANGE",sProperty); DV/P/1E Utility.log(sProperty); Z-+p+34ytq Y;'7Ek) wMB<^zZmv InputStream input = httpConnection.getInputStream(); N^.!l_ //logResponseHead(httpConnection); rx#\Dc}
ojitBo~ q
y8=4~40 byte[] b = new byte[1024]; Ge;plD-f int nRead; U= PG0 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) >m{)shBX {
HRKe 7#e nStartPos += fileAccessI.write(b,0,nRead); 3E361?ubM //if(nThreadID == 1) B/CP/Pfb // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ;2;Kq)j_= } '
RjFWHAp <4Jo1 8BZDaiE" Utility.log("Thread " + nThreadID + " is over!"); S|%f<zAtJ bDownOver = true; AcYL3 //nPos = fileAccessI.write (b,0,nRead); v(t?d } MW+]w~7_Q catch(Exception e){e.printStackTrace ();} b|*A%?m } |3MqAvPJ } rX#}2 5sq#bvfJ o f13%[RA9N //打印回应的头信息 d(L u|/~ public void logResponseHead(HttpURLConnection con) { LJRdV { YDyi6x, for(int i=1;;i++) NY
ZPh%x { 89'XOXl&1 String header=con.getHeaderFieldKey(i); )S|}de/a2 if(header!=null) bewi.$E{
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 1qb 3. Utility.log(header+" : "+con.getHeaderField(header)); F3b[L^Km] else bd2"k;H<o break; `1KZ14K } ;o#R(m@Lx } eRa1eRgP '7{0k{ !R WX1Z public void splitterStop() '@iS5Fni { ~J6c1jG bStop = true; dt
4_x1 } xF_ Y7rw1w -)aBS3 :r[`bqC;\* } fV_(P_C ?'h<yxu]u0 qf9.S)H1Z /* #]|9aVrr **FileAccess.java ge[+/$(1 *//文件访问(定位,写) ?zN v7Bj package NetFox; (+ 9_nAgZ, import java.io.*; HQ+:0"B J+LFzl07q uM0z%z5b public class FileAccessI implements Serializable{ F[c;iM(^ %9=^#e+pE //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Au"[2cG RandomAccessFile oSavedFile; x1$tS#lS long nPos; mD)_quz.sk oZ@_o3VG Y2w 9]:J public FileAccessI() throws IOException M*E4:A9_M { r$6z{Na\[ this("",0);
#oi4!%*M } fdCsn: .c+RFX@0 fdN-Zq@' public FileAccessI(String sName,long nPos) throws IOException N@^?J@#V { Z|
+/Wl-h oSavedFile = new RandomAccessFile(sName,"rw"); Ne.W-,X^cL this.nPos = nPos; }yU,_: oSavedFile.seek(nPos); ^Yn{Vi2. } e4ajT
h.g11xa 9QI\[lT& public synchronized int write(byte[] b,int nStart,int nLen) ?jBna
~ {
~-6Kl3Y int n = -1; A[!Fg0X0 try{ oHbEHS61 oSavedFile.write(b,nStart,nLen); 'd1E~A n = nLen; #Qy*zU#9 } >\$qF catch(IOException e) QKbX^C { )D@1V=9, e.printStackTrace (); BJk\p.BVN } 6A/Nlk. ^C@uP9g L$@^EENS return n; 6$b"tdP } p(~>u'c +8Zt<snG ho@f}4jhQ3 } ALwkX"AN *n2Q_o yIbz\3 /* M0 x5s@ **SiteInfoBean.java o
1#XM/Z */ l0u6nGkh package NetFox; +vLuzM- 'sY>(D*CQ ^,b*.6t public class SiteInfoBean { T8ZBQ;o FymA_Eq OgS6#X private String sSiteURL; //Site's URL qw0tw2| private String sFilePath; //Saved File's Path z(>{"t<C private String sFileName; //Saved File's Name EUe2<G private int nSplitter; //Count of Splited Downloading File D_9&=aa' =6j
5, 91%+Bf()J6 public SiteInfoBean() q[1H=+ {//nSplitter的缺省值为5 1U~AupHE //default value of nSplitter is 5 -Z<e`iFQS this("","","",5); bP Er+?fu } ]<4Yor}t{; /[GOs*{zB f3V&i)w( public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) sxO_K^eD { r NqJL_! sSiteURL= sURL; nV
McHN sFilePath = sPath; HQaKG4Z sFileName = sName; [lQp4xgxi this.nSplitter = nSpiltter; ,ye>D=' fmA&1u/xMs HHCsWe- } ^;NM'Z 1B6Go +fAAkO*GP public String getSSiteURL() .
%tc7`k8 { ).N }x^ return sSiteURL; TpZ) wC } 8:L%- NV*aHci ]BP/KCjAI< public void setSSiteURL(String value) 3oxQ[.o { :{LVS
nG sSiteURL = value; &.=d,XKN } U-3KuR+0 &EXql'] WaN0$66[: public String getSFilePath() d<V+;">2 { ^gH.5L0]gH return sFilePath; phl5E:fIKx } }^?dK3~q 68Wm=j.m 6H VS0 public void setSFilePath(String value) W8yr06{] { 2[9hl@=% sFilePath = value; Trbgg } =d7 lrx+z zBB4lC{q "KW\:uc / public String getSFileName() QCa$<~c { >efYpd#^ return sFileName; //Hn[wEOh } -YA1Uk \0(QO8. mV`Z]-$$i public void setSFileName(String value) # u^F B { *ta|, sFileName = value; sTeL4g|%{ } cm-cwPAh Si6%6rAhj -Qiay/tlu public int getNSplitter() kd|@. { xlgN}M return nSplitter; &{x5 |$SD } #?!)-Q% n|SsV
$62ospR^Y public void setNSplitter(int nCount) 26o68U8&y { k-Jj k3 nSplitter = nCount; <|hvH } BA A)IQF } }n:'@} b,KQG|k T9RR.
ng /* /ta-jOcRH& **Utility.java Q++lgVh)E */ {G%`K,T package NetFox; !(uyqplTk )3'/g`c 8$OE<c?#5n public class Utility { 2!7wGXm~U yFl@z /]F3t]FlC public Utility() , YTuZS { `Kpn@Xg Sw%=/ g SL pd~ZC? } *;Hvx32I 7$Bq.Lc#z //线程睡眠 ="d}:Jl public static void sleep(int nSecond) `cy_@Z5A { +7^%fX;3pW try{ =MB[v/M59w Thread.sleep(nSecond); mAk)9`f/ } >e=tem~/ catch(Exception e) 6Nj\N oS { iKLN !QR e.printStackTrace (); Wl;F]_|*( } _+ oX9 } E2LpQNvN%g <[ 8at6; //日志 jGb+bN5U7 public static void log(String sMsg) qI^6}PB { 3"6lPUS System.err.println(sMsg); X*]uLgbl } +sQ=Uw#e "sUL"i w%S\)wjS public static void log(int sMsg) [,8@oM# { >y(;k|-$ System.err.println(sMsg); zp!{u{ } &]ts*qCEL } ]6GdB3?UVM &Jk0SUk MP 8JJqEkQ /* Fv.}w_ **TestMethod.java %gkRG66 */ HP:ee+n package NetFox; 1bYc^(z0 .,o=# ?E^~z- public class TestMethod { ;R@zf1UYA sn@gchO9s r[q-O&2& public TestMethod() QPg
QM6 { ///xx/weblogic60b2_win.exe yS@c2I602 try{ q$(aMO&J SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); k9~NIvnB` //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 8l~]}2LAs SiteFileFetch fileFetch = new SiteFileFetch(bean); ltwX- fileFetch.start(); aiF7\^aw$ } ^QpP' catch(Exception e){e.printStackTrace ();} 2h IM!wQ Uk`ym i'H{cN6 } {SY@7G] ~ZweP$l ]EnB`g(4; public static void main(String[] args) E<:XHjm { r.lH@}i%n new TestMethod(); p3&/F=T;) } D\}^<HW } K9njD#/ 点击下载更多相关资料
|