连接jsp图片上传／放大缩小／裁减的源代码

3000分求JSP图片上传放大缩小裁减的源代码

1 #大中小发表于2009-08-27 10:33:00

3000分求JSP图片上传放大缩小裁减的源代码。能裁减固定大小比如      的就行。有预览能显示图片长宽和大小file size)最好。

本人结帖率是99.87%, 可用分   +

dsf 如果没有JSP源代码 PHP源代码也可以。

String picPath;//图片路径 如:F:picturea.gifpublic String pictype[] ;//设置图片的后缀名FileInputStream in;int piclength;//设置图片的最大kb

}

public void setpiclength)//设置图片的最大长

{this.piclength=piclength;

}public int getpiclength()

{return piclength;

}public boolean testlength()//判断图片的长度是否大于设定的最大长度

{try{in=new FileInputStream(picPath) ;if(in.available()/1024>piclength)return false;

}catch(IOException e)

{

System.out.println(e.getMessage() ) ;

}return true;

}public void setpictype(String[] pictype)//设置图片的扩展名

{this.pictype=pictype;

}public boolean testpictype()//判断图片的扩展名是否是规定的

{if(pictype!=null)

{for(int i=0; i <pictype. length; i )

{if(picPath.endsWith(pictype) )return true;

}return false;

}return false;

}

}

以下是在jsp页面中调用uploadpic

首先要引入此bean所在的包

<%@page import="myBean.uploadpic" %>

<jsp:useBean id="pic" scope="page" class="myBean.uploadpic" />下一条语句是得到上一层页面也就是用户提交的图片路径

Stringpicp=codetostring.codeToString(request.getParameter("picPath")) ;pic. setpicPath(picp) ;pic. setpiclength(100) ;//以kb为单位if(pic. testlength() )out.print("length ok <br>") ;elseout.print("length ok") ;

String p1,p2;p1=". jpg";p2=".gif";

String[] type={p1,p2} ;pic. setpictype(type) ;if(pic. testpictype() )out.print("typeok") ;elseout.print("type error") ;made by zonecens www.okjava.net.cn

不知道2楼的怎么样我来学习一个

帮顶

好像百度一招很多

百度一下找到相关网页约11,400,000篇用时0.036秒3000连个星星都升不了

这个是JAVA代码package ftp;import sun.net.ftp.*;import sun.net.*;import java.awt.*;import java.awt.event.*;import java.applet.*;

import java. io.*;class FTPextends Applet {

FtpClient aftp;

DataOutputStream outputs;

TelnetInputStream ins;

TelnetOutputStream outs;

TextArea lsArea;

Label LblPrompt;

Button BtnConn;

Button BtnClose;

TextField TxtUID;

TextField TxtPWD;

TextField TxtHost;int ch;public String a = "没有连接主机";

String hostname = "";public void init() {setBackground(Color.white) ;setLayout(new GridBagLayout() ) ;

GridBagConstraints GBC = new GridBagConstraints() ;

LblPrompt = new Label ("没有连接主机") ;LblPrompt. setAlignment(Label.LEFT) ;BtnConn = new Button("连接") ;

BtnClose = new Button("断开") ;

BtnClose.enable(false) ;

TxtUID = new TextField("", 15) ;TxtPWD = new TextField("", 15) ;TxtPWD. setEchoCharacter('*' ) ;

TxtHost = new TextField("", 20) ;Label LblUID = new Label ("User ID:") ;Label LblPWD = new Label ("PWD:") ;Label LblHost = new Label ("Host:") ;

lsArea = new TextArea(30, 80) ;lsArea. setEditable(false) ;

GBC.gridwidth = GridBagConstraints.REMAINDER;GBC.f ill = GridBagConstraints.HORIZONTAL;( (GridBagLayout) getLayout() ) . setConstraints(LblPrompt, GBC) ;add(LblPrompt) ;

GBC.gridwidth = 1 ;

( (GridBagLayout) getLayout() ) . setConstraints(LblHost, GBC) ;add(LblHost) ;

GBC.gridwidth = GridBagConstraints.REMAINDER;( (GridBagLayout) getLayout() ) . setConstraints(TxtHost, GBC) ;add(TxtHost) ;

GBC.gridwidth = 1 ;

( (GridBagLayout) getLayout() ) . setConstraints(LblUID, GBC) ;add(LblUID) ;

GBC.gridwidth = 1 ;

( (GridBagLayout) getLayout() ) . setConstraints(TxtUID, GBC) ;add(TxtUID) ;

GBC.gridwidth = 1 ;

( (GridBagLayout) getLayout() ) . setConstraints(LblPWD, GBC) ;add(LblPWD) ;

GBC.gridwidth = 1 ;

( (GridBagLayout) getLayout() ) . setConstraints(TxtPWD, GBC) ;add(TxtPWD) ;

GBC.gridwidth = 1 ;

GBC.weightx = 2;

( (GridBagLayout) getLayout() ) . setConstraints(BtnConn, GBC) ;add(BtnConn) ;

GBC.gridwidth = GridBagConstraints.REMAINDER;( (GridBagLayout) getLayout() ) . setConstraints(BtnClose, GBC) ;add(BtnClose) ;

GBC.gridwidth = GridBagConstraints.REMAINDER;GBC.f ill = GridBagConstraints.HORIZONTAL;( (GridBagLayout) getLayout() ) . setConstraints(lsArea, GBC) ;add(lsArea) ;

}public boolean connect(String hostname, String uid,String pwd) {this.hostname = hostname;

LblPrompt. setText("正在连接请等待. . . . . ") ;try {aftp = new FtpClient(hostname) ;aftp. login(uid, pwd) ;aftp.binary() ;showFileContents() ;

}catch (FtpLoginException e) {a = "无权限与主机:" + hostname + "连接!";

LblPrompt. setText(a) ;return false;

}catch (IOException e) {a = "连接主机:" + hostname + "失败!";

LblPrompt. setText(a) ;return false;

}catch (SecurityException e) {a = "无权限与主机:" + hostname + "连接!";

LblPrompt. setText(a) ;return false;

}

LblPrompt. setText("连接主机:" + hostname + "成

功!") ;return true;

}

public void stop() {try {aftp.closeServer() ;

}catch (IOException e) {

}

}public void paint(Graphics g) {

}public boolean action(Event evt, Object obj) {if (evt. target == BtnConn) {

LblPrompt. setText("正在连接请等待. . . . . ") ;if (connect(TxtHost.getText() , TxtUID.getText() , TxtPWD.getText() ) ) {

BtnConn. setEnabled(false) ;

BtnClose. setEnabled(true) ;

}return true;

}if (evt. target == BtnClose) {

stop() ;

BtnConn.enable(true) ;

BtnClose.enable(false) ;

LblPrompt. setText("与主机" + hostname + "连

接已断开!") ;return true;

}return super.action(evt, obj) ;

}public boolean sendFile(String filepathname) {boolean result = true;if (aftp != null) {

LblPrompt. setText("正在粘贴文件,请耐心等

待. . . . ") ;

String contentperline;try {a = "粘贴成功!";

String fg = new String("\") ;int index = filepathname. lastIndexOf(fg) ;String filename = filepathname. substring(index + 1) ;

File localFile;localFile = new File(filepathname) ;RandomAccessFile sendFile = new RandomAccessFile(filepathname, "r") ;

//sendFile. seek(0) ;outs = aftp.put(filename) ;outputs = new DataOutputStream(outs) ;while (sendFile.getFilePointer() < sendFile. length() ) {ch = sendFile.read() ;outputs.write(ch) ;

}outs.close() ;sendFile.close() ;

}catch (IOException e) {a = "粘贴失败!";result = false;

}

LblPrompt. setText(a) ;showFileContents() ;

}else {result = false;

}return result;

}public void showFileContents() {StringBuffer buf = new StringBuffer() ;lsArea. setText("") ;try {ins = aftp. list() ;while ( (ch = ins.read() ) >= 0) {buf.append( (char) ch) ;

}lsArea.appendText(buf. toString() ) ;ins.close() ;

}catch (IOException e) {

}

}public static void main(String args[] ) {Frame f = new Frame("FTP Client") ;f.addWindowListener(new WindowAdapter() {