struts2上传图片并剪切
jopen
11年前
上传图片的jsp页面
<style type="text/css"> input { vertical-align: middle; margin: 0; padding: 0 } .file-box { position: relative; width: 340px } .txt { height: 22px; border: 1px solid #cdcdcd; width: 180px; } .btn { background-color: #FFF; border: 1px solid #CDCDCD; height: 24px; width: 70px; } .file { position: absolute; top: 0; right: 80px; height: 24px; filter: alpha(opacity : 0); opacity: 0; width: 260px } /* 定制文件上传按钮 */ .u-upload { display: inline-block; *display: inline; *zoom: 1; position: relative; overflow: hidden; } .u-upload button { height: 22px; padding: 0 10px; border: 1px solid #ccc; overflow: visible; font-size: 14px; color: #666; background: #ddd; } .u-upload input { position: absolute; top: 0; right: -1px; font-size: 100px; cursor: pointer; opacity: 0; filter: alpha(opacity = 0); } .u-upload:hover button { border-color: #bbb; color: #333; background: #ccc; } a.u-upload,a.u-upload:hover { text-decoration: none; } </style> <script type='text/javascript'> var file = $("#file").val(); var fileName = getFileName(file); function getFileName(o) { var pos = o.lastIndexOf("\\"); return o.substring(pos + 1); } <%--名字不要起upload！！！名字冲突！--%> function upload1() { document.commentform.action = "upload!upload"; document.commentform.submit(); } function publish() { document.commentform.action = "secondHandAction!putmessage"; document.commentform.submit(); } </script> <form method="post" id="commentform" name="commentform" class="form" action="" ENCTYPE="multipart/form-data"> <textarea name="comment" type="text" placeholder="信息内容" rows="15" class="span8" tabindex="4" aria-required='true'></textarea> <input type='text' name='uploadFileName' id='uploadFileName' class='txt' value="<%=Util.uploadFileUrl%>"/> <a href="#" class="u-upload"> <button type="button">浏览..</button> <input type="file" name="upload" class="file" id="upload" size="28" onchange="document.getElementById('uploadFileName').value=this.value" /> </a> <input name="submit" type="submit" value="上传" class="btn btn-small btn-info" onClick="upload1()" /> </br> </form> 上传图片的Action类
package com.efinance.action; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import javax.servlet.http.HttpServletRequest; import org.apache.struts2.ServletActionContext; import org.apache.struts2.interceptor.ServletRequestAware; import com.opensymphony.xwork2.ActionContext; import com.opensymphony.xwork2.ActionSupport; import com.utils.OperateImage; import com.utils.Util; public class FileUploadAction extends ActionSupport implements ServletRequestAware{ /** *@author island *@date 2011-08-13 */ private static final long serialVersionUID = 1L; private File upload; private String uploadContentType; private String uploadFileName; private String savePath; FileInputStream inputStream; protected HttpServletRequest request; public void setServletRequest(HttpServletRequest request) { this.request = request; } public String upload() { byte[] buffer=new byte[1024]; try { InputStream in=new FileInputStream(upload); //上传的名字要改,不能按照用户上传的名字当名字 // String realPath = System.out.println(this.getSavePath()+"\\"+uploadFileName); // ServletActionContext.getServletContext().getRealPath("/images"); OutputStream out=new FileOutputStream(new File(this.getSavePath()+"\\"+uploadFileName)); int length=in.read(buffer); while(length>0) { out.write(buffer); length=in.read(buffer); } in.close(); out.flush(); out.close(); } catch(Exception e) { e.printStackTrace(); } return this.SUCCESS; } public String download() { //以后uploadFileName来源于数据库 File file=new File(this.getSavePath()+"\\"+uploadFileName); try { inputStream=new FileInputStream(file); } catch (FileNotFoundException e) { e.printStackTrace(); } return "downImg"; } public String cut() throws IOException{ //x1,y1就够用了 但是如果前端放大了那个剪切框,x1和y1是不能控制住图片大小的需要加上x2和y2才能控制住 String x1 = request.getParameter("x1"); String x2 = request.getParameter("x2"); String y1 = request.getParameter("y1"); String y2 = request.getParameter("y2"); String width = request.getParameter("width"); String height = request.getParameter("height"); String hidimg = request.getParameter("hidimg");//获取图片名称，jsp中名字后期来源于数据库 OperateImage o = new OperateImage(Integer.parseInt(x1),Integer.parseInt(y1),Integer.parseInt(width),Integer.parseInt(height)); //将hidimg取出图片名字 hidimg=hidimg.trim(); hidimg=hidimg.substring(hidimg.lastIndexOf("/")+1); System.out.println(""+hidimg); o.setSrcpath(this.getSavePath()+"\\"+hidimg); //源文件路径 // 获取服务器存储路径 /* String realPath = ServletActionContext.getServletContext().getRealPath("/images"); */ o.setSubpath(this.getSavePath()+"\\_"+Util.uploadFileName); //目标路径 图片的名字要改 o.cut(); return "cut"; } public String getSavePath() { return ServletActionContext.getRequest().getRealPath(savePath); } public void setSavePath(String savePath) { this.savePath = savePath; } public FileInputStream getInputStream() { return inputStream; } public void setInputStream(FileInputStream inputStream) { this.inputStream = inputStream; } public File getUpload() { return upload; } public void setUpload(File upload) { this.upload = upload; } public String getUploadContentType() { return uploadContentType; } public void setUploadContentType(String uploadContentType) { this.uploadContentType = uploadContentType; } public String getUploadFileName() { return uploadFileName; } public void setUploadFileName(String uploadFileName) { Util.uploadFileUrl=uploadFileName; uploadFileName=uploadFileName.trim(); System.out.println(""+uploadFileName); this.uploadFileName=uploadFileName.substring(uploadFileName.lastIndexOf("/")+1); Util.uploadFileName=uploadFileName.substring(uploadFileName.lastIndexOf("/")+1); } // public void addActionError(String anErrorMessage){ // String s=anErrorMessage; // System.out.println(s); // } // public void addActionMessage(String aMessage){ // String s=aMessage; // System.out.println(s); // // } // public void addFieldError(String fieldName, String errorMessage){ // String s=errorMessage; // String f=fieldName; // System.out.println(s); // System.out.println(f); // } }
裁剪图片
package com.utils; import java.awt.Rectangle; import java.awt.image.BufferedImage; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.util.Iterator; import javax.imageio.ImageIO; import javax.imageio.ImageReadParam; import javax.imageio.ImageReader; import javax.imageio.stream.ImageInputStream; import org.apache.struts2.ServletActionContext; /** *@author island *@date 2011-08-13 */ public class OperateImage { //===源图片路径名称如:c:\1.jpg private String srcpath ; //===剪切图片存放路径名称.如:c:\2.jpg private String subpath ; //===剪切点x坐标 private int x ; private int y ; //===剪切点宽度 private int width ; private int height ; public OperateImage(){ } public OperateImage(int x,int y,int width,int height){ this.x = x ; this.y = y ; this.width = width ; this.height = height ; } /** *//** *//** *//** * 对图片裁剪，并把裁剪完蛋新图片保存 。 */ public void cut() throws IOException{ FileInputStream is = null ; ImageInputStream iis =null ; try{ //读取图片文件 is = new FileInputStream(srcpath); /** *//**//* * 返回包含所有当前已注册 ImageReader 的 Iterator，这些 ImageReader * 声称能够解码指定格式。 参数：formatName - 包含非正式格式名称 . *（例如 "jpeg" 或 "tiff"）等 。 */ Iterator<ImageReader> it = ImageIO.getImageReadersByFormatName("jpg"); ImageReader reader = it.next(); //获取图片流 iis = ImageIO.createImageInputStream(is); /** *//**//* * <p>iis:读取源.true:只向前搜索 </p>.将它标记为 ‘只向前搜索’。 * 此设置意味着包含在输入源中的图像将只按顺序读取，可能允许 reader * 避免缓存包含与以前已经读取的图像关联的数据的那些输入部分。 */ reader.setInput(iis,true) ; /** *//**//* * <p>描述如何对流进行解码的类<p>.用于指定如何在输入时从 Java Image I/O * 框架的上下文中的流转换一幅图像或一组图像。用于特定图像格式的插件 * 将从其 ImageReader 实现的 getDefaultReadParam 方法中返回 * ImageReadParam 的实例。 */ ImageReadParam param = reader.getDefaultReadParam(); /** *//**//* * 图片裁剪区域。Rectangle 指定了坐标空间中的一个区域，通过 Rectangle 对象 * 的左上顶点的坐标（x，y）、宽度和高度可以定义这个区域。 */ Rectangle rect = new Rectangle(x, y, width, height); //提供一个 BufferedImage，将其用作解码像素数据的目标。 param.setSourceRegion(rect); /** *//**//* * 使用所提供的 ImageReadParam 读取通过索引 imageIndex 指定的对象，并将 * 它作为一个完整的 BufferedImage 返回。 */ BufferedImage bi = reader.read(0,param); //保存新图片 ImageIO.write(bi, "jpg", new File(subpath)); } finally{ if(is!=null) is.close() ; if(iis!=null) iis.close(); } } public int getHeight() { return height; } public void setHeight(int height) { this.height = height; } public String getSrcpath() { return srcpath; } public void setSrcpath(String srcpath) { this.srcpath = srcpath; } public String getSubpath() { return subpath; } public void setSubpath(String subpath) { this.subpath = subpath; } public int getWidth() { return width; } public void setWidth(int width) { this.width = width; } public int getX() { return x; } public void setX(int x) { this.x = x; } public int getY() { return y; } public void setY(int y) { this.y = y; } public static void main(String[] args)throws Exception{ //可以单独运行尝试 String name = "d:\\imges.jpg"; OperateImage o = new OperateImage(220,213,200,333); o.setSrcpath(name); o.setSubpath("D:\\2.jpg"); o.cut() ; } } <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <%@ taglib uri="/struts-tags" prefix="s"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="Content-type" content="text/html; charset=utf-8" /> <meta http-equiv="Content-Language" content="en-us" /> <title></title> <script src="<%=basePath %>/js/prototype.js" type="text/javascript"></script> <script src="<%=basePath %>/js/scriptaculous.js?load=builder,dragdrop" type="text/javascript"></script> <script src="<%=basePath %>/js/cropper.js" type="text/javascript"></script> <link rel="stylesheet" type="text/css" href="<%=basePath %>/css/cropper.css" media="all" /> <script type="text/javascript" charset="utf-8"> function onEndCrop( coords, dimensions ) { $( 'x1' ).value = coords.x1; $( 'y1' ).value = coords.y1; $( 'x2' ).value = coords.x2; $( 'y2' ).value = coords.y2; $( 'width' ).value = dimensions.width; $( 'height' ).value = dimensions.height; } // example with a preview of crop results, must have minimumm dimensions Event.observe( window, 'load', function() { new Cropper.ImgWithPreview( 'testImage', { minWidth: 100, minHeight: 100, ratioDim: { x: 100, y: 100 }, displayOnInit: true, onEndCrop: onEndCrop, previewWrap: 'previewArea' } ) } ); /* if( typeof(dump) != 'function' ) { Debug.init(true, '/'); function dump( msg ) { // Debug.raise( msg ); }; } else dump( '---------------------------------------\n' ); */ </script> <link rel="stylesheet" type="text/css" href="debug.css" media="all" /> <style type="text/css"> label { clear: left; margin-left: 50px; float: left; width: 5em; } #testWrap { width: 500px; float: left; margin: 20px 0 0 50px; } #previewArea { margin: 20px; 0 0 20px; float: left; } #results { clear: both; } </style> </head> <body> <form action="<%=basePath %>cut.action" method="post"> <br /><br /> <!-- 组件要显示的图片 --> <div id="testWrap"> <img id="testImage" src ='upload/<s:property value ="uploadFileName" /> ' /> <br /> <s:property value ="caption" /> </div> <div id="previewArea"></div> <div id="results"> <p> <label for="x1">x1:</label> <input type="text" name="x1" id="x1" /> </p> <p> <label for="y1">y1:</label> <input type="text" name="y1" id="y1" /> </p> <p> <label for="x2">x2:</label> <input type="text" name="x2" id="x2" /> </p> <p> <label for="y2">y2:</label> <input type="text" name="y2" id="y2" /> </p> <p> <label for="width">width:</label> <input type="text" name="width" id="width" /> </p> <p> <label for="height">height</label> <input type="text" name="height" id="height" /> <input type="hidden" name="hidimg" value="<s:property value ="uploadFileName" />"/> </p> </div> <input type="submit" value="剪切"/> </form> </body> </html> 工具类
public class Util { /** * 存放文件名 */ public static String uploadFileName=""; /** * 存放文件完整路径 */ public static String uploadFileUrl=""; public static int userId=0; public static String number=""; }