头像截取 部分Java代码 屎一样 有bug
/**
* 从网上摘抄的。
* 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 。
*
* @param postFix
* 文件的后缀名
* @author 刘各欢
* @return
*/
public Iterator<ImageReader> getImageReadersByFormatName(String postFix) {
switch (postFix) {
case "jpg":
return ImageIO.getImageReadersByFormatName("jpg");
case "jpeg":
return ImageIO.getImageReadersByFormatName("jpeg");
case "gif":
return ImageIO.getImageReadersByFormatName("gif");
case "bmp":
return ImageIO.getImageReadersByFormatName("bmp");
case "png":
return ImageIO.getImageReadersByFormatName("png");
default:
return ImageIO.getImageReadersByFormatName("jpg");
}
}
/**
*
* fileCut:传入一个图片文件，返回一个剪切过的文件流
*
* @author 刘各欢
* @param in
* @param x
* @param y
* @param width
* @param height
* @param showHeight
* @param showWidth
* @throws IOException
* @since Ver 1.1
*/
public void fileCut(String postFix,InputStream in,FileOutputStream out,int x,int y,int width,int height,int showHeight,int showWidth) throws IOException{
//FileInputStream is = null;
ImageInputStream iis = null;
try {
// 读取图片文件
//is = new FileInputStream(in);
// 获取文件的后缀名
System.out.println("图片格式为：" + postFix);
/*
* 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 = getImageReadersByFormatName(postFix);
ImageReader reader = it.next();
// 获取图片流
iis = ImageIO.createImageInputStream(in);
/*
* <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);
int realWidth = reader.getWidth(0);
int realHeight = reader.getHeight(0);
double xBilv = showWidth/(double)realWidth;
double yBilv = showHeight/(double)realHeight;
BigDecimal realX = new BigDecimal(x/xBilv);
BigDecimal realY = new BigDecimal(y/yBilv);
BigDecimal caijianWidth = new BigDecimal(width/xBilv);
BigDecimal caijianHeight = new BigDecimal(height/yBilv);
/*
* <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(realX.intValue(), realY.intValue(), caijianWidth.intValue(), caijianHeight.intValue());
// 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);
/*
* 缩放图片
*/
Image imageSmall = bi.getScaledInstance(100, 100, Image.SCALE_DEFAULT);
BufferedImage small = new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB);
Graphics g = small.getGraphics();
g.drawImage(imageSmall, 0, 0, null); // 绘制缩小后的图 将Image绘制到BufferedImage中
g.dispose();
// 保存新图片
//ImageIO.write(bi, postFix, new File("3_" + new Date().getTime() + "." + postFix));
ImageIO.write(small, postFix, out);
} finally {
if (in != null)
in.close();
if (iis != null)
iis.close();
if (out != null)
out.close();
}
}
主调用方法：
/**
*
* saveOrUpdate:修改个人信息
*
* @author 王岩
* @param id
* @param username
* @param email
* @param phonenum
* @param address
* @param sex
* @param request
* @return
* @throws NoSuchAlgorithmException
* @since Ver 1.1
*/
@RequestMapping(value = "/update.do")
public String saveOrUpdate(String username, MultipartFile pic,
String img_x,String img_y,String img_w,String img_h,
HttpServletRequest request) throws NoSuchAlgorithmException //String email,Date date, Integer phonenum, String address, String sex,
{
HttpSession session=request.getSession();
User users = (User)session.getAttribute("curruser");
String id=users.getId();
String pathString = CommonInfo.realDir + CommonInfo.productImageRealDir;
User user = null;
if (StringUtils.isNotBlank(id)) {
user = userService.get(id);
}
user.setUsername(username);
//user.setEmail(email);
//user.setPhonenum(phonenum);
//user.setAddress(address);
//user.setSex(sex);
//user.setDate(date);
/**************************************************
*
*
* */
/**************************************************
*
*
* */
if (pic.getSize() > 0) {
user.setImage(pathString + pic.getOriginalFilename());
File file = new File(pathString);
if (!file.exists() && !file.isDirectory()) {
file.mkdirs();
}
try {
FileOutputStream fout = new FileOutputStream("D:\\" + pic.getOriginalFilename());
int x = new BigDecimal(img_x).intValue();
int y = new BigDecimal(img_y).intValue();
int w = new BigDecimal(img_w).intValue();
int h = new BigDecimal(img_h).intValue();
String ext=pic.getOriginalFilename().substring(pic.getOriginalFilename().lastIndexOf(".")+1,pic.getOriginalFilename().length());
this.fileCut(ext.toLowerCase(),pic.getInputStream(),fout,x,y,w,h,200,200);
if(fout!=null)
fout.close();
//pic.transferTo(new File());
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
String path = user.getImage();
request.getSession().setAttribute("path", path);
userService.saveOrUpdate(user);
return "redirect:personal.do";
}
HTML
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<html>
<head>
<meta name="renderer" content="webkit">
<meta charset="utf-8">
<title>个人信息</title>
<%@ include file="/WEB-INF/jsp/commons/includes.jsp"%>
<script src="${contextPath}/scripts/jquery.jcrop.min.js"></script>
<link rel="stylesheet" href="${contextPath}/css/jquery.jcrop.css" />
<script type="text/javascript">
function caijian(){
// Create variables (in this scope) to hold the API and image size
var jcrop_api, boundx, boundy;
$('#p_img').Jcrop({
onChange: updatePreview,
onSelect: updatePreview,
aspectRatio: 1,
setSelect: [0,0,150,150]
},function(){
// Use the API to get the real image size
var bounds = this.getBounds();
boundx = bounds[0];
boundy = bounds[1];
console.log(1111);
console.log(bounds);
// Store the API in the jcrop_api variable
jcrop_api = this;
});
function updatePreview(c)
{
if (parseInt(c.w) > 0)
{
var bilv = $('#p_img').width()/
console.log(c);
$("#img_x").val(c.x);
$("#img_y").val(c.y);
$("#img_w").val(c.w);
$("#img_h").val(c.h);
var rx = 100 / c.w;
var ry = 100 / c.h;
$('#p_img_preview').css({
width: Math.round(rx * boundx) + 'px',
height: Math.round(ry * boundy) + 'px',
marginLeft: '-' + Math.round(rx * c.x) + 'px',
marginTop: '-' + Math.round(ry * c.y) + 'px'
});
}
};
}
//建立一個可存取到該file的url
function getObjectURL(file) {
var url = null ;
if (window.createObjectURL!=undefined) { // basic
url = window.createObjectURL(file) ;
} else if (window.URL!=undefined) { // mozilla(firefox)
url = window.URL.createObjectURL(file) ;
} else if (window.webkitURL!=undefined) { // webkit or chrome
url = window.webkitURL.createObjectURL(file) ;
}
return url ;
}
$(document).ready(
function() {
$('#p_img_preview').css({
width: 150 + 'px',
height: 150 + 'px'});
$("#pic").change(function(){
console.log(this.files[0]);
var objUrl = getObjectURL(this.files[0]) ;
console.log("objUrl = "+objUrl) ;
if (objUrl) {
$("#p_img").attr("src", objUrl+"") ;
$("#p_img_preview").attr("src", objUrl+"") ;
caijian();
$(".jcrop-holder img").attr("src",objUrl+"");
}
}) ;
}
);
$(function() {
$("input[type=radio][name=sex][value=${user.sex}]").attr("checked",
"checked");
});
jQuery(function($) {
$("#address").keydown(function(e) {
if (e.keyCode == 13) {
loginSubmit();
}
});
});
</script>
</head>
<body>
<%@ include file="/WEB-INF/jsp/commons/header.jsp"%>
<%@ include file="/WEB-INF/jsp/commons/menu.jsp"%>
<div class="mainContainer sixteen container">
<!--Header Block-->
<!--Content Block-->
<section class="content-wrapper">
<div class="content-container container">
<%@ include file="/WEB-INF/jsp/commons/left.jsp"%>
<div class="col-main">
<form id="reg-form" method="post" action="${contextPath}/update.do" enctype="multipart/form-data" >
<!-- 修改个人信息 -->
<div class="main">
<h1 class="page-title">完善个人信息</h1>
<div class="fieldset">
<input type="hidden" name="id" value="${curruser.id}" />
<h2 class="legend">个人信息</h2>
<div>
<ul class="form-list" style="float: left">
<li>
<div class="input-box">
<span>用户名</span>
:${user.username} <input
type="hidden" name="username" value="${user.username}">
</div>
</li>
<li>
<div>
<br> <span>性别<em>*</em></span> <input
type="radio" name="sex" value="0" />男
<input type="radio" name="sex" value="1" />女
<input type="radio" name="sex" value="2" />保密
</div>
</li>
<li>
<div>
<br><span>出生年月<em>*</em></span><br>
<%-- <input type="date" id="date" value="${user.date}" name="date"/> --%>
<input type="date" name="date">
</div>
</li>
<li>
<div class="input-box">
<br> <span>手机号<em>*</em></span> <br> <input type="text"
title="手机号" value="${user.phonenum}" name="phonenum"
required="true" id="phonenum" class="easyui-numberbox"
size="8" maxlength="11" />
</div>
<div class="clear"></div>
</li>
<li>
<div class="input-box">
<br> <span>邮箱<em>*</em></span> <br> <input type="text"
title="邮箱" value="${user.email}" name="email" id="email"
required="true" class="easyui-validatebox"
missingMessage="邮件必须填写" validType="email"
invalidMessage="请填写正确的邮件格式" />
</div>
</li>
<li>
<div class="input-box">
<br> <span>所在地<em>*</em></span> <br> <input type="text"
required="true" class="easyui-validatebox" title="所在地"
value="${user.address}" name="address" id="address" />
</div>
</li>
</ul>
<ul style="float: right">
<li>
<div style="width:200px;">
<%-- src="${contextPath}/images/honglou1.png" --%>
<img id="p_img" alt="原始" style="width:200px;height:200px;" src="${contextPath}/images/honglou1.png" />
<div style="width:80px;height:80px;overflow:hidden;">
<img id="p_img_preview" class="jcrop-preview" alt="预览图片" src="${contextPath}/images/honglou1.png" />
</div>
</div>
<div>
<br> <span>头像<em>*</em></span>
<input type="file" id="pic" name="pic" class="easyui-filebox">
<input type="hidden" id="img_x" name="img_x" />
<input type="hidden" id="img_y" name="img_y" />
<input type="hidden" id="img_w" name="img_w" />
<input type="hidden" id="img_h" name="img_h" />
</div>
</li>
</ul>
</div>
<br>
<div class="buttons-set" style="margin-top: 350px">
<p class="required">* 必填项</p>
<!-- class="orange-btn" -->
<input type="submit" title="Submit" value="提交"
class="orange-btn" style="margin-bottom: 20px;">
<div class="clear"></div>
</div>
</div>
</div>
</form>
</div>
<%-- <div class="clearfix"></div>
<%@ include file="/WEB-INF/jsp/commons/main.jsp"%> --%>
</div>
</section>
</div>
<!--Footer Block-->
<%@ include file="/WEB-INF/jsp/commons/footer.jsp"%>
</body>
</html>
版权声明：本文为博主原创文章，未经博主允许不得转载。