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/* p`gg **SiteFileFetch.java WzgzI/ */ oV?tp4& package NetFox; ~cSC-|$^& import java.io.*; !Y=s_)X import java.net.*; o;FjpZ :eS7"EG{3 FePJ8 public class SiteFileFetch extends Thread { n-,~Bp
[ ]@l~z0^|[_ L6BHh_*E SiteInfoBean siteInfoBean = null; //文件信息Bean Q !5Tw long[] nStartPos; //开始位置 V5KAiG<d long[] nEndPos; //结束位置 7qon:]b4 FileSplitterFetch[] fileSplitterFetch; //子线程对象 U"-mLv"| long nFileLength; //文件长度 mDipP boolean bFirst = true; //是否第一次取文件 RTA9CR)JP4 boolean bStop = false; //停止标志 H;*:XLPF File tmpFile; //文件下载的临时信息 !IoD";Oi DataOutputStream output; //输出到文件的输出流 ':[+UUC@ [=e61Z //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) [#j|TBMHM public SiteFileFetch(SiteInfoBean bean) throws IOException ig; ~
T { IK{0Y#c siteInfoBean = bean; /.'1i4Xa1P //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); \yb^%$hZ0
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); +x
G] (? if(tmpFile.exists ()) GY,@jp|R { 0VoC|,$U bFirst = false; ZT8. r0 read_nPos(); y>2v 9;Qp } %'\D_W& else C,]Q/6'> { qTqvEa^X` nStartPos = new long[bean.getNSplitter()]; N<Bi.\XC nEndPos = new long[bean.getNSplitter()]; g%j z,| } s`C#=l4 >~BU<# (n"M) ,~K_rNNZ } ?jw)%{iKYV Yc:b:\0}F6 XF\`stEnb public void run() <n }=zu { ":]O3 D{r //获得文件长度 rorzxp{ //分割文件 HH^{,53% //实例FileSplitterFetch _?kf9 . //启动FileSplitterFetch线程 Tj0eW(<!s //等待子线程返回 Zu%_kpW try{ U{>!`RN if(bFirst) >ID 3oi { J)(]cW. nFileLength = getFileSize(); >z^T~@m7l if(nFileLength == -1) \`>Y { t T-]Vj. System.err.println("File Length is not known!"); 6ap,XFRMh } z@~1e]% else if(nFileLength == -2) <]wN/B-8J { }'H Da M System.err.println("File is not access!"); y
H+CyL\ } 9%zR?u else "45BOw&72G { Tj:+:B(HB for(int i=0;i<nStartPos.length;i++) ^~BJu#uVyy { 0QC*Z ( nStartPos = (long)(i*(nFileLength/nStartPos.length)); GrM~%ng } #Q'i/|g for(int i=0;i<nEndPos.length-1;i++) B]*&lRR { gmLw. |- nEndPos = nStartPos[i+1]; \Z+v\5nmO } }ZYK3F nEndPos[nEndPos.length-1] = nFileLength; <wE2ly&x } $S,Uoh } 6_XX[.% T7W+K7kbI *ac#wEd //启动子线程 ppV\FQ{K fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; xVl90ak for(int i=0;i<nStartPos.length;i++) cz T@ txF { dk(-yv' fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(),
}U^9( siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), [MiD%FfcNH nStartPos,nEndPos,i); ZgXh[UHQy Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ,E>VYkoA fileSplitterFetch.start(); G^2"\4R]p } zG@!(
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), G&uj}rj siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); PTePSj1N // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", *=2jteG=3. nEndPos = " + nFileLength); W_DO8nX // fileSplitterFetch[nPos.length-1].start(); x_@ev- fmSw%r|pT \C<rg| //等待子线程结束 }`_2fJ6 //int count = 0; "lz!'~im //是否结束while循环 e.HN%LrhS boolean breakWhile = false; |f>y"T+1 9*2hBNp+ !Uj !Oy while(!bStop) +Nza@B d { cnIy*!cJs write_nPos(); yRgo1o w] Utility.sleep(500); Gf%o|kX] breakWhile = true; 9J|YP}% G2jEwi Gg;#U` for(int i=0;i<nStartPos.length;i++) KBJ|P^W5j { P'
J_:\ if(!fileSplitterFetch.bDownOver) n `n3[ { 3p^WTQ>( breakWhile = false; d&ZwVF! break; 4\$Ze0tv } /60[T@Mz } ;^*^
:L if(breakWhile) 6*LU+U=` break;
#!hpe^t }j:ae \( S"eKiS,z //count++; 2
G"p:iPp //if(count>4) m+u>%Ys` // siteStop(); Tbwq_3fK } Vm.u3KE ]{"(l( 8n73MF
System.err.println("文件下载结束!"); z$<6;2 } {?jdPh catch(Exception e){e.printStackTrace ();} Zq`bd55~ } 6?a(@<k_ (Dn-vY' .(hb8 rCM //获得文件长度 -e)bq:T public long getFileSize() nRo`O { e;pNB int nFileLength = -1; lGM3?AN try{ BT#>b@Xub URL url = new URL(siteInfoBean.getSSiteURL()); pUwX
cy<n HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); j)]'kg httpConnection.setRequestProperty("User-Agent","NetFox"); I;|Aiu* \W\6m0-x JZv]tJWq int responseCode=httpConnection.getResponseCode(); ^twv0>vEo if(responseCode>=400) 3@&H)fdp6a { pts}? processErrorCode(responseCode); cp2fDn return -2; //-2 represent access is error d,[KcX } wYxizNv, R utW{wh .kYzB.3@] String sHeader; ?ykZY0{B ,-1$Vh@wM GS$k for(int i=1;;i++) w|Mj8Lc+ { i&30n# //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 1Efl|lV //Utility.log(in.readLine()); "p;DQ-V sHeader=httpConnection.getHeaderFieldKey(i); !'gz&3B~h if(sHeader!=null) "''<:K| { m0*
B[ if(sHeader.equals("Content-Length")) Pz)QOrrG~ { 87Uv+((H nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); nn
break; x2B"%3th0 } X @Bpjg } -#o+x Jj else $oQsh|sTI break; 6P~"7k } hHg
gH4T } &59#$LyH`% catch(IOException e){e.printStackTrace ();} 6^aYW#O<Ua catch(Exception e){e.printStackTrace ();} b
mm@oi 6m"
75 _9@?Th&_e Utility.log(nFileLength); qN0#=X
M+E5PZ|_
I>3]4mI*a return nFileLength; 4GfLS.Ip } ygW@[^g 'f}S,i +q ]p*)
PpIl //保存下载信息(文件指针位置) vedMzef[@> private void write_nPos() _Ry.Wth { _%2Umy| try{ pzax~Vp output = new DataOutputStream(new FileOutputStream(tmpFile)); tZYI{m{ output.writeInt(nStartPos.length); 0V#t ;`Q3 for(int i=0;i<nStartPos.length;i++) )[)]@e { Y z,!#ob$ // output.writeLong(nPos); G}-.xj] output.writeLong(fileSplitterFetch.nStartPos); 4d 3Znpf output.writeLong(fileSplitterFetch.nEndPos); &v-V_.0(H } 5>@uEebkv] output.close(); L@4zuzmlb } LA?\~rh! catch(IOException e){e.printStackTrace ();} Z
:9VxZ catch(Exception e){e.printStackTrace ();} %1@<), } lp}WB d+ ^'fKey` `I>K? //读取保存的下载信息(文件指针位置) ;
BZM~'
private void read_nPos() ;a3nH { XeSbA try{ #VV.[N DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Doh|G:P]# int nCount = input.readInt(); e8 7-
B1` nStartPos = new long[nCount]; Y+
Z9IiS7 nEndPos = new long[nCount]; $
tNhwF for(int i=0;i<nStartPos.length;i++) "k<:a2R { M&ij[%i nStartPos = input.readLong(); ]jb4Z nEndPos = input.readLong(); k2uiu } |{PJT#W% input.close(); 8-"5|pNc } ij i.3- catch(IOException e){e.printStackTrace ();} &&}5>kg>d catch(Exception e){e.printStackTrace ();} {~t4 } D' `"_ qZJ*J+ o w_y private void processErrorCode(int nErrorCode) kNj3!u$ { V"H7zx System.err.println("Error Code : " + nErrorCode); Jo3(bl%u } unnx#e] V*zz-
2_i klJ[ {p //停止文件下载 F!&pENQ public void siteStop() ~{vdP=/WP { MgQU6O< bStop = true; "-n%874IT for(int i=0;i<nStartPos.length;i++) 3> #mO}\ fileSplitterFetch.splitterStop(); 5;
PXF $XQxWH| eqZ+no } -+rF]|Wi } !Gp3/<"Wy$ //负责部分文件的抓取 _`_IUuj$E **FileSplitterFetch.java !e'0jf-~ */ 7vaN&%;E% package NetFox; NceB'YG| p$nK@t} fHd!/%iG import java.io.*; {*
j^g6; import java.net.*; [u9JL3 !049K!rP{ `SjD/vNE public class FileSplitterFetch extends Thread { ~BvY8\@B BO4 K#H7 9J7J/]7f String sURL; //File URL uUz`= 4%A long nStartPos; //File Snippet Start Position !
F <] T long nEndPos; //File Snippet End Position 8F^,8kIR int nThreadID; //Thread's ID RF5q5<0 boolean bDownOver = false; //Downing is over |R;l5ZKvV boolean bStop = false; //Stop identical +F o$o FileAccessI fileAccessI = null; //File Access interface em1cc, %L
j0 %x6Ov\s2 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException k9)u3 { i6md fp|k this.sURL = sURL; 5Y Q this.nStartPos = nStart; 1_NG+H]x9 this.nEndPos = nEnd; Z|(c(H2 nThreadID = id; eky(;%Sz fileAccessI = new FileAccessI(sName,nStartPos);//定位 ,xYsH+ybA } 'xbERu(Y 43>9)t +lW}ixt public void run() *NW QmC~ { z,bX.*.- while(nStartPos < nEndPos && !bStop) @?Gw|bP { l+2cj?X o8'Mks V5O=iMP try{ xegQRc URL url = new URL(sURL); I/HV;g:# HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); K3rBl!7v httpConnection.setRequestProperty("User-Agent","NetFox"); ~`2&'8 String sProperty = "bytes="+nStartPos+"-"; u`Z0{d httpConnection.setRequestProperty("RANGE",sProperty); zr.+'
Utility.log(sProperty); .%?-As Ug7`ez4vw `z}vONXpAX InputStream input = httpConnection.getInputStream(); !ww:O| 0 //logResponseHead(httpConnection); j /H>0^ c6,s+^^ i_=?eUq%q/ byte[] b = new byte[1024]; F#1 Kk#t int nRead; a|QE *s. while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) xHJ8?bD p { Q1`<fD
nStartPos += fileAccessI.write(b,0,nRead); 6F*-qb3 //if(nThreadID == 1) rFmKmV // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); /5Zp-Pq } ]<kupaRQ S jVsF1d_ id;#{O$ Utility.log("Thread " + nThreadID + " is over!"); b96t0w!cs bDownOver = true; 7uPZuXHxcu //nPos = fileAccessI.write (b,0,nRead); r$GPYyHK } l'*^$qc catch(Exception e){e.printStackTrace ();} /l,+oG%\ } ?P""KVpo } XM6".eF)M <NG/i i= x&C%4Y_] //打印回应的头信息 6<x~Mk'u) public void logResponseHead(HttpURLConnection con) Xhcn] { 4$
Dt8!p0 for(int i=1;;i++) YV/>8*i { v7i^O`{eD? String header=con.getHeaderFieldKey(i); d,c8Hs8 if(header!=null) K8HIuQ!= //responseHeaders.put(header,httpConnection.getHeaderField(header)); D|@bGN Utility.log(header+" : "+con.getHeaderField(header)); gq'>6vOj else b?_e+:\UV break; I|,pE**T } Y5dD|]F| } ]} 61vV q$r&4s)To sl/=g
public void splitterStop() z Yw;q3" { U;xu/xDRi bStop = true; Y^52~[w~ } #`W=mN(+k S6v!GQ U|gpCy } {<qF }i:V .L9']zXc` I2f?xJ2/Z /* ~xGoJrF\ **FileAccess.java 1T ( u *//文件访问(定位,写) Kv(z4 z package NetFox; *~p(GC import java.io.*; !^m%O0DT B:4Ka]{YO &&=[Ivv public class FileAccessI implements Serializable{ qG<7hr@x] t\h$&[[l'z //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Sw~(uH_l RandomAccessFile oSavedFile; ^ eQFg> long nPos; '77~{jy -? s&pKi NXpmT4 public FileAccessI() throws IOException 2{bhA5L { bS.s?a this("",0); 33Jd!orXU } JVtQ,oZ =#qZ3 Qz_ L!t@-5~
public FileAccessI(String sName,long nPos) throws IOException C5xag#Z1 { xJ{_qP oSavedFile = new RandomAccessFile(sName,"rw"); vY6oVjM this.nPos = nPos; XZ`:wmc| oSavedFile.seek(nPos); oM!xz1kVL } :.kZR; 07V8;A<, ,7W:fwdR public synchronized int write(byte[] b,int nStart,int nLen) {(
#zcK { _AFQ >j int n = -1; 62) d22 try{ NzQ9Z1Mxy oSavedFile.write(b,nStart,nLen); : [q0S@ n = nLen; 'OwyyPBF } #B8*gFZB catch(IOException e) A /(lK q { Z$p0&~ e.printStackTrace (); ,apNwkY } `K*b?:0lp B
z^|SkEit q2hFOm return n; ';0 qj$# } ]1D%zKY%$Z -(i(02PX G O{.9_2 } *wuqa)q2 r> k-KdS "g>.{E5 /* )"Q*G/+2Ie **SiteInfoBean.java ]PWDE" */ {ox2Tg? package NetFox; M*sR3SZ
mMSh2B +vW)vS[ public class SiteInfoBean { :w`3cwQ l.`u5D .~>?*} private String sSiteURL; //Site's URL j~E",7Q' private String sFilePath; //Saved File's Path K<4Kk3 private String sFileName; //Saved File's Name }lP;U$ private int nSplitter; //Count of Splited Downloading File ljC(L/I eSEq{?> FdzNE public SiteInfoBean() ST5V!jz {//nSplitter的缺省值为5 -#In;~ //default value of nSplitter is 5 QzOkpewf this("","","",5); mj&57D\fq } 0p(L' ,HB2hHD .pPm~2]z public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) R!(ZMRMn { >(r{7Qg sSiteURL= sURL; sa1h%< sFilePath = sPath; {D`'0Z1" sFileName = sName; ~1
~Xfo> this.nSplitter = nSpiltter; Z(u5$<up ~YP Jez X(A.X:" } S0d~.ah30 d>0+A)6> 2 PqS%`XiS public String getSSiteURL() G(iJi { q[3x2sR return sSiteURL; i;z{zVR } ^T5X)Nu{=C h6_(?|:-( 69m
;XdkKz public void setSSiteURL(String value) s 5WqR8 { JL=U,Mr6 sSiteURL = value; H
3@Z.D } {ZU1x C .zg8i_ \OILWQ[/ public String getSFilePath() oF]cTAqhC. { [AU
II*:} return sFilePath; `B/0i A } i;/xK=L >Dw~POMy ^3VR-u <O public void setSFilePath(String value) );V2?G`/ { oA] KE"T sFilePath = value; $
_j[2EU } h4|i%,f NLS"eDm x5}'7,A public String getSFileName() 1MlUG5 { bmgn cwlz return sFileName; +mj*o( } ^I8Esl8 Fm\"{)V:b in+}/mwfC public void setSFileName(String value) x8Loyt_C { {S/yL[S. sFileName = value; KWAb-yB } 7ELMd{CD C%d_@*82 `Z:R Ce^ public int getNSplitter() 3@+b}9s8 { hu_ ^OlF return nSplitter; }%b;vzkG5 } 7SD Fz} PyVC}dUAX o#) {1<0vg public void setNSplitter(int nCount) !+>v[(OzM { qm/Q65>E nSplitter = nCount; :NJ_n6E } pl@O
N"=[ } ,B?~-2cCz OsBo+fwT <,o>Wx*1C /* Z;9>S=w! **Utility.java ^b: (jI*l */ .2d9?p3Y package NetFox; :w}{$v}#D; T134ZXqqz V7#v6!7A@ public class Utility { mxor1P#| !It`+0S
b %CWPbk^ public Utility() D\IjyZ-O { SJD@&m%?[ 9T#;,{VQ P96pm6H_; } _zlqtO zvABU+{jD //线程睡眠 fYKO J5f public static void sleep(int nSecond) C{TA.\ { .MO\uh0N try{ " \I4u{zC Thread.sleep(nSecond); "KcA } c/c$D;T catch(Exception e) <: &* { a]Lp? e.printStackTrace (); ga?*DI8w } zdXkR] } $kR N
h6 OL4z%mDZi //日志 Y5fLmPza public static void log(String sMsg) {U&.D
[{& { 74!oe u.> System.err.println(sMsg); !9 fz(9 }
:W b j\ Ol4+_n8xj >S$Z public static void log(int sMsg) Uj&W<'I { xsWur(> ] System.err.println(sMsg); WJI[9@^I~ } v<Bynd- } ECv)v l5L.5$N E=){K /* <uj8lctmP **TestMethod.java pp9Zb.D\ */ mPq$?gdp package NetFox; wAnb
Di{W !w&kyW?e 2^?:&1: public class TestMethod { apE n3J53| %v cwGbSW$t public TestMethod() t&?im< { ///xx/weblogic60b2_win.exe ^>"z@$|\: try{ qzb<J=FAU SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); R8.CC1Ix //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); K~ ;45Z2 SiteFileFetch fileFetch = new SiteFileFetch(bean); '\jd#Kn'h fileFetch.start(); (b`]M`Fc } Nk {XdrY catch(Exception e){e.printStackTrace ();} V!)O6?l \Qm CeB IIy~[4dW } ~'R(2[L!; $s<Ne{? McPNB`.H public static void main(String[] args) y8fsveX { ;5@ t[r new TestMethod(); xe/( } {rcnM7 S1L } =y=cW1TG 点击下载更多相关资料
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