-
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
|
/* ;$!0pxL)s **SiteFileFetch.java `ALQSo~l */ vcy+p]6KE- package NetFox; zYPvpZV/ import java.io.*; _6n za)OFH import java.net.*; @$QtY(a hI<$lEB c&RiUU7 public class SiteFileFetch extends Thread { [A!=Hv_$ H lFVc {![E)~ SiteInfoBean siteInfoBean = null; //文件信息Bean bDw\;bnG long[] nStartPos; //开始位置 b1e)w?n long[] nEndPos; //结束位置 :SF8t` 4` FileSplitterFetch[] fileSplitterFetch; //子线程对象 R*dXbI&,e long nFileLength; //文件长度 Ax!@vL&@ boolean bFirst = true; //是否第一次取文件 TxkvHiq2 boolean bStop = false; //停止标志 I[ZWOi\-
; File tmpFile; //文件下载的临时信息 uWXxK"J. DataOutputStream output; //输出到文件的输出流 $:DL+E-} 0B`rTLwB //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) _#P5j# public SiteFileFetch(SiteInfoBean bean) throws IOException eBECY(QMQ { g2r8J0v siteInfoBean = bean; =o"sBVj //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); %HZ!s
`w_ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); X~; *zYd5 if(tmpFile.exists ()) {2|sk9?W { 5=MM^$QG bFirst = false; oFGgr2Re read_nPos(); :SD3 } 6Vu??qBy else xdsF! Zb { q=BAYZ\` nStartPos = new long[bean.getNSplitter()]; K,HR=5 nEndPos = new long[bean.getNSplitter()]; =PBJ+"DQs } ^dhtc%
W> \w{fq+G $/JnYkL{m oB}rd9 } \HJ t } G! ryW4 4~:D7",Jn public void run() n lvDMZ { !%C&hH\ //获得文件长度 \l;H!y[ //分割文件 QF_K^( //实例FileSplitterFetch @)@hzXQ //启动FileSplitterFetch线程 GZFLJu //等待子线程返回 vr>Rd{dm try{ g!;Hv if(bFirst) >\!>CuU { xF9PjnWF= nFileLength = getFileSize(); f['pHR%l2$ if(nFileLength == -1) A832z` { O~g0 R6M6e System.err.println("File Length is not known!"); h@?BA<'S } 6sRKbp|r7 else if(nFileLength == -2) 3WdANR { EabZ7zFoN System.err.println("File is not access!"); )/<\|mR } V$ss[fX else $y*["~TJ { TBqJ.a for(int i=0;i<nStartPos.length;i++) e_pyjaY!s { Ax+q/nvnb nStartPos = (long)(i*(nFileLength/nStartPos.length)); V0WFh=CM@ } |2~fOyA+ for(int i=0;i<nEndPos.length-1;i++) AU
+2' { ^t\AB)(8 nEndPos = nStartPos[i+1]; 7[ra#>e8' } pn~$u nEndPos[nEndPos.length-1] = nFileLength; "&/&v } FVcooV } OW<5,h LA^H213N| 3l@={Ts //启动子线程 BqKh&m fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; "i1~YE for(int i=0;i<nStartPos.length;i++) f[/E $r99J { DNaU
mz fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), x~tG[Y2F? siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), :bgi*pR{ nStartPos,nEndPos,i); q|%(47}z Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); }0Q6iHX@ fileSplitterFetch.start(); GxGZxf*( } tXTa>Q // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), rX#}2 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); =ITMAC\ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ^kMgjS}R nEndPos = " + nFileLength); ZIx,?E+eJ // fileSplitterFetch[nPos.length-1].start(); %!HmtpS J,E'F!{ eID"&SSU //等待子线程结束 %o+VZEH3 //int count = 0; |!)3[<. //是否结束while循环 g<Sa{<0 boolean breakWhile = false; ,g$N KPUc+`cN% :R<n{%~ while(!bStop) 4PEJ}BW { #$Z|)i]w write_nPos(); @"H+QVJ@ Utility.sleep(500); !58-3F%P breakWhile = true; 16YJQ ue @fbB3 .Tdl'y:.. for(int i=0;i<nStartPos.length;i++) 4y+]V~p { ge[+/$(1 if(!fileSplitterFetch.bDownOver) U&/Jh^Yy { o=2y`Eq breakWhile = false; xgt dmv% break; Tp`by
1s } %
j7lLSusX } %9=^#e+pE if(breakWhile) ~OEP)c\k break; SN'LUwaMp! F#Oqa^$( M*E4:A9_M //count++; XWbe|K!e //if(count>4) #:3E.= // siteStop(); .c+RFX@0 } BjJ$I^ oG5JJpLT q'M-a tE. System.err.println("文件下载结束!"); o_EXbS]C } ,l`q catch(Exception e){e.printStackTrace ();} s%J|r{F6 } `96:Z-!} kkFE9:[-c& l<{]%=Qg //获得文件长度 NJ7N* public long getFileSize() \A5cM\- { >wM%|j' int nFileLength = -1; =[?2'riI try{ yc4mWB~gyU URL url = new URL(siteInfoBean.getSSiteURL()); ?ae:9ZcH HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); VA)3=82n httpConnection.setRequestProperty("User-Agent","NetFox"); %dS7u$Rnh (( Ec:(:c _4rb7"b1 int responseCode=httpConnection.getResponseCode(); @=b0>^\m if(responseCode>=400) <0 R7uH { JHc|.2Oe processErrorCode(responseCode); OtF{=7 return -2; //-2 represent access is error x"v5'EpL } _d]w)YMO i?'HVx brNe13d3~" String sHeader; @"kA&=0;|J N*lq)@smq zY\v|l<T for(int i=1;;i++) Zo;@StN3}T { }`IN5NdYp //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); A`=ESz //Utility.log(in.readLine()); q uv`~qn sHeader=httpConnection.getHeaderFieldKey(i); R/b)h P~ if(sHeader!=null) -d%bc? { Z,,Da|edH if(sHeader.equals("Content-Length")) iyu%o9_0 { @*q\$Eg}2 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ?9v!UT break; :{LVS
nG } cIja^xD } )(\5Wk9( else WaN0$66[: break; ePIBg( } aAu
upPu } 1b;Aru~l catch(IOException e){e.printStackTrace ();} .-`7Av+7 catch(Exception e){e.printStackTrace ();} ~{Tus.jk .+ai
dWd C?bPdJ,6 Utility.log(nFileLength); REoFP;H~ P)^K&7X RX=C)q2c return nFileLength; >Bskw2 }
=^q:h< 0l.+yr}PE tV*g1)'zX //保存下载信息(文件指针位置) 6N~~:Gt private void write_nPos() R7x4v { U&wVe$ try{ \KLWOj% output = new DataOutputStream(new FileOutputStream(tmpFile)); rNfua
output.writeInt(nStartPos.length); ^z9ITGB~tV for(int i=0;i<nStartPos.length;i++) #?!)-Q% { Xn$]DE/r}N // output.writeLong(nPos); f Nm
Sx output.writeLong(fileSplitterFetch.nStartPos); /Kwo^Q{ output.writeLong(fileSplitterFetch.nEndPos); SG8|xoL } BA A)IQF output.close(); _
97F } DD"]as"# catch(IOException e){e.printStackTrace ();} Tp)-L0kD_k catch(Exception e){e.printStackTrace ();} hP`3Ao } Z)62/`C) -g;iMqh# U,[vfSDGr //读取保存的下载信息(文件指针位置) :~zK0v" private void read_nPos() _s|C0Pt { *1ku2e]z try{ 2P!Pbl< DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); f@[q# }6 int nCount = input.readInt(); }j+ZF'# nStartPos = new long[nCount]; 2[r#y1ro nEndPos = new long[nCount]; Ls5|4%+& for(int i=0;i<nStartPos.length;i++) r$=iM:kERC { 8g(%6 ET nStartPos = input.readLong(); SD8Q_[rY nEndPos = input.readLong(); 5z5#_*)O } |M)'@s: input.close(); (gvaYKvr } FGzB7w# catch(IOException e){e.printStackTrace ();} <[ 8at6; catch(Exception e){e.printStackTrace ();} tL 3]9qfj } o" &7$pAh -+Kx^V#'R \[B5j0vV, private void processErrorCode(int nErrorCode) vtCt6M { \a<qI System.err.println("Error Code : " + nErrorCode); dE.R$SM } ,wlFn ]6GdB3?UVM :nCGqg //停止文件下载 $FNj>1 public void siteStop() %gkRG66 { QyJ}zwD bStop = true; 9=ns.r for(int i=0;i<nStartPos.length;i++) C6M|A3^T fileSplitterFetch.splitterStop(); g.SFl (6^v`SZ (Z,v)TOXjV } :+bQPzL } q$(aMO&J //负责部分文件的抓取 5T:e4U&
**FileSplitterFetch.java }XX)U_x */ l"f.eo0@7 package NetFox; ZMt9'w; U rm&4&y <wW#Wnc ] import java.io.*; =XzrmPu import java.net.*; 4fT,/[k? b" 1a7 Ew*_@hVC public class FileSplitterFetch extends Thread { iyB02\d K9njD#/ po4seW! String sURL; //File URL l<ag\ d long nStartPos; //File Snippet Start Position r?nvJHP long nEndPos; //File Snippet End Position |cEJRs@B int nThreadID; //Thread's ID -Ds}kdxw boolean bDownOver = false; //Downing is over AME3hA boolean bStop = false; //Stop identical 6y)TXp FileAccessI fileAccessI = null; //File Access interface Pv17wUB ?T3zA2 "T=Z/@Vy public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException e=<knKc
Q { ^HgQ"dD
< this.sURL = sURL; ` .|JTm[ this.nStartPos = nStart; mKugb_d? this.nEndPos = nEnd; LBq~?Q.e nThreadID = id; 'Ybd'|t{} fileAccessI = new FileAccessI(sName,nStartPos);//定位 '-oS=OrZ } 8UJK]_99I, 12`q9Io"
|_"JyGR2 public void run() )h]~<
fU { ea kj>7\s while(nStartPos < nEndPos && !bStop) B7zyMh { VgD z:j /{>$E>N; 29("gB try{ VG0Ty;bV URL url = new URL(sURL); Uy2NZ%rnt HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 3=5K7F httpConnection.setRequestProperty("User-Agent","NetFox"); ajC'C!"^Ty String sProperty = "bytes="+nStartPos+"-"; 9>yLSM,!rS httpConnection.setRequestProperty("RANGE",sProperty); $M{MOehZ Utility.log(sProperty); ?oana% 7?!A~Seo| _0N=~`' InputStream input = httpConnection.getInputStream(); UF0W%Z //logResponseHead(httpConnection); 6_]-&&Nr ZG[P?fM nr7#}pzo byte[] b = new byte[1024]; 2l]*><q| int nRead; r<VZEbm) while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) RfH.WXi { l/1u>' nStartPos += fileAccessI.write(b,0,nRead); O<7Q>m //if(nThreadID == 1) !~Vo'ykwx' // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); wNo2$>* } <Hd8Jd4f c%y(Z5 x\PZ.o Utility.log("Thread " + nThreadID + " is over!"); JjA3G`m= bDownOver = true; mApn[)?tv //nPos = fileAccessI.write (b,0,nRead); Y-!~x0-H } I> <B6pIR catch(Exception e){e.printStackTrace ();} rPhx^
QKH2 } o>WB,i^ G } 9{[I| ffoL]u\ z=mH\! //打印回应的头信息 %Ms"LoK public void logResponseHead(HttpURLConnection con) :rxS&5 { bfo..f-0/Y for(int i=1;;i++) w>#{Nl7gz { Lx%*IE|c String header=con.getHeaderFieldKey(i); KLb"_1z if(header!=null) aQ!QrTua- //responseHeaders.put(header,httpConnection.getHeaderField(header)); Nq]8p =e Utility.log(header+" : "+con.getHeaderField(header)); p7{2/mj else (=A61]yB break; &T.d"i } *JnY0xP } M3XG s|gw U
?iw -e_91WI public void splitterStop() ` wI$ { f^JiaU4 [ bStop = true; YnR8mVo5Q } Ibf~gr(j ;R5@]Hg6q mJxr"cwHl } *y+N-uq M)x6m|.= .lsD+} /* v~8CpC **FileAccess.java 6jw9p+. *//文件访问(定位,写) 5!QT
}Um package NetFox; :g%hT$,]3b import java.io.*; J.EBt3 $-D}y: (rmOv\hG9V public class FileAccessI implements Serializable{ GB%kxtGD;\ jJY{np //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ZLjEH7 RandomAccessFile oSavedFile; t1JU_P long nPos;
=oE(ur /^]/ iTg Ln'y 3~@ public FileAccessI() throws IOException tJG+k)EE { 0g2? this("",0); }/w]+f* } dhX$b!DA &k@\k<2Ia (himx8Uml2 public FileAccessI(String sName,long nPos) throws IOException 0OXl`V`w { /Nc)bF%gX oSavedFile = new RandomAccessFile(sName,"rw"); z!M # this.nPos = nPos; <4LW.q oSavedFile.seek(nPos); ["O_Phb| } C669:% .FN;3HU KqN;a i,F public synchronized int write(byte[] b,int nStart,int nLen) l4gF.-.GYF { +v2)'?BS int n = -1; nt]'>eX_} try{ m#$$xG oSavedFile.write(b,nStart,nLen); 1> v(&;K n = nLen; D6dliU?k } ZEp>~dn; catch(IOException e) ;^TSla+t+ { fsl
ZJE e.printStackTrace (); mm9uhlV8 } O$n W Pn,>eD*g 28LBvJVq@ return n; 5DpvMhc_ } }4g$aTc Q>q-6/|UX =]r2;014
} :GN++\1pw ~,_@|,) m-qu<4A/U| /* >~0~h:M+ **SiteInfoBean.java b^STegz */ m-6&-G# package NetFox; **\?-*c=U 8(Q|[ No8-Hm public class SiteInfoBean { TCFr-*x '6kD6o_p1 P5H_iH private String sSiteURL; //Site's URL x=Aq5*A0 private String sFilePath; //Saved File's Path bU/4KZ'-^ private String sFileName; //Saved File's Name aNn4j_V( private int nSplitter; //Count of Splited Downloading File !PA ><F 1 0zw}1x lUaJC'~p public SiteInfoBean() -dWg1`; {//nSplitter的缺省值为5 Qqi?DW1)- //default value of nSplitter is 5 }$'XV. this("","","",5); ?yxQs=&-q~ } hH9~.4+*`g rq^%)tR 8f<y~L_(` public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) /N({"G' { S[gACEZ = sSiteURL= sURL; q'/o=De sFilePath = sPath; |g>Q3E sFileName = sName; fJP *RVz this.nSplitter = nSpiltter; Ud Vf/PGx gkX7,J-0 `dD_"Hdt } {/(.Bpld D^2lb"3 (c&%1bJ public String getSSiteURL() J>k
6`gw { Q)y5'u qZ return sSiteURL; Zwz co } +I-BqA9 u;]xAr1 Ch3MwM5] public void setSSiteURL(String value) ?:M4GY"gV { Gov.;hy sSiteURL = value; [Y$TVwFwX } Mvue>)g~> REgM YF-A8gXS public String getSFilePath() o$Ylqb# { c_CVZR? return sFilePath; O_ZYm{T[7 } G@`ZDn -%]1q#C>@ @D!*@M6 public void setSFilePath(String value) =-_hq'il { {;E6jw@ sFilePath = value; k0O5c[j } a??8)=0|} *Ti"8^`6 -Ci&h public String getSFileName() n-xdyJD { t$~'$kM)< return sFileName; <&3aP} } yci} #,nb ,~&HL7v b- e public void setSFileName(String value) Ncsh{. { $/|) ,n sFileName = value; r#2Fk&Z9 } ^e <E/j{~ ;@Fb>lBhX M2w'cdHk public int getNSplitter() 0ug&HEl_w { JKfJ%yy | return nSplitter; \lm]G7h } >$9}" OA=~i/n~ D*[Jrq, public void setNSplitter(int nCount) 1AN$s
{ /5/gnpC nSplitter = nCount; 1%*\*z
} 9]w?mHslE } #=S^i[K/ "O0xh_Nr _K!.TM+9 /* J{prI;]K **Utility.java t"YsIOT:O" */ ]uypi#[ package NetFox; R'zi#FeP [2Zy~`*y{ Q8AAu&te7 public class Utility { Y8]@y0( V`#2jDz Dqii60 public Utility() sH;_U)ssH { }.E^_` z8awND T:Nk9t$W7@ } vg[3\!8z[ d[p2?] //线程睡眠 5!fYTo|G> public static void sleep(int nSecond) M1xsGa9h& { oo2d, try{ _Iav2=0Wi Thread.sleep(nSecond); ]q{_i } [V:~j1{3 catch(Exception e) !|xB>d
q? { 'xj5R=V e.printStackTrace (); {~&Q"8
}G } 8\{z>y } ;J,(YNI
1 [UI>SN //日志 "W%YsN0 public static void log(String sMsg) r4X}U|s!0 { lMGO4U[z System.err.println(sMsg); 5X)M)"rq;V } wCNn/%C Wy7w zt `HQ)][ public static void log(int sMsg) 94ruQ/ { pN5kcvQ System.err.println(sMsg); O8$~dzf,2 } . waw=C } oC>J{z Fb]+h)on 3;BIwb_ /* [m0X kvd **TestMethod.java EwN{| 34C */ &=kv69v package NetFox; U _5` 1l#46?]~ s%K( hk public class TestMethod { Mg`!tFe3 n>q!m@ }< '?veMX public TestMethod() mYgfGPF` { ///xx/weblogic60b2_win.exe _Pqq* try{ f_S$CFa@ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 3Xu|hkK\e //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); mEd2f^R SiteFileFetch fileFetch = new SiteFileFetch(bean); T\}U{9ELL fileFetch.start(); (V6bX]< } Ldz]FB| catch(Exception e){e.printStackTrace ();} z:#]P0 M<w.q|P (O0 Ry2uk } )C8^'*! AuXUD9- !t23
_b0 public static void main(String[] args) NLMvi!5w, { ?`U_|Yo new TestMethod(); <x^$Fu } H<_Tn$<zH. } -`k>(\Q<d 点击下载更多相关资料
|