The NoteBook of EricKong

:: 管理

611 Posts :: 1 Stories :: 190 Comments :: 0 Trackbacks

1、頁面代碼

Html代碼

<%@ page contentType="text/html;charset=UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<html>
<head>
<title>圖片上傳</title>
<script type="text/javascript">
function upload(){
var ff = document.forms.imageForm;
var img = ff.file.value;
if(img==null || img==""){
alert(" 圖片路徑不允許為空！");
return;
}
ff.target="_top";
ff.method="post";
ff.submit();
}
</script>
</head>
<body>
<form id="imageForm" action="image.action"
enctype="multipart/form-data">
<p>
------------------------------
</p>
上傳圖片：
<input name="file" type=file value=''>
<br>
<input type="button" value="上傳" onclick="upload()"
style="cursor: pointer">
</form>
<p>
-------------------------------------------------
</p>
<div>
<c:if test="${ipath!=null}">
<img src="${ipath}">
</c:if>
<div>
<div>
<c:if test="${imgPath!=null}">
<img src="${imgPath}">
</c:if>
</div>
</body>
</html>

<%@ page contentType="text/html;charset=UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<html>
<head>
<title>圖片上傳</title>
<script type="text/javascript">
function upload(){
var ff = document.forms.imageForm;
var img = ff.file.value;
if(img==null || img==""){
alert("圖片路徑不允許為空！");
return;
}
ff.target="_top";
ff.method="post";
ff.submit();
}
</script>
</head>
<body>
<form id="imageForm" action="image.action"
enctype="multipart/form-data">
<p>
------------------------------
</p>
上傳圖片：
<input name="file" type=file value=''>
<br>
<input type="button" value="上傳" onclick="upload()"
style="cursor: pointer">
</form>
<p>
-------------------------------------------------
</p>
<div>
<c:if test="${ipath!=null}">
<img src="${ipath}">
</c:if>
<div>
<div>
<c:if test="${imgPath!=null}">
<img src="${imgPath}">
</c:if>
</div>
</body>
</html>

2、action代碼

Java代碼

import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImage;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
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 java.util.Date;
import javax.imageio.ImageIO;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
public class ImageAction extends ActionSupport {
/**
* 圖片上傳、縮放、文字水印、圖片水印
*/
private static final long serialVersionUID = -8982586906724587883L;
private Log log = LogFactory.getLog(getClass());
private static final int BUFFER_SIZE = 16 * 1024;
private static final String TEXT_TITLE = "文字水印";
private static final String WATER_IMG_NAME = "rzx.gif";
// 輸入?yún)?shù):上傳過來的文件路徑
private File file;
/**
* 輸入?yún)?shù):文件名稱由struts的攔截器默認賦值,注意setter的寫法:file+fileName
*/
private String fileName;
/**
* 輸入?yún)?shù) 由struts的攔截器默認賦值,注意setter的寫法:file+contentType
*/
private String contentType;
// 輸出參數(shù)
private String imageFileName;
// 輸出參數(shù):原圖保存路徑
private String ipath;
// 輸出參數(shù):縮略圖保存路徑
private String imgPath;
// 輸出參數(shù)
private String json;
public ImageAction() {
}
@Override
public String execute() throws Exception {
return uploadImage();
}
/**
* 得到文件名稱
*
* @param fileName
* @return
*/
private String getExtention(String fileName) {
int pos = fileName.lastIndexOf(".");
return fileName.substring(pos);
}
/**
* 拷貝
*
* @param file
* @param imageFile
* @throws Exception
*/
private void copy(File src, File dist) throws Exception {
log.debug("[src]--" + src);
log.debug("[dist]--" + dist);
try {
InputStream in = null;
OutputStream out = null;
try {
in = new BufferedInputStream(new FileInputStream(src), BUFFER_SIZE);
out = new BufferedOutputStream(new FileOutputStream(dist), BUFFER_SIZE);
byte[] buf = new byte[BUFFER_SIZE];
while (in.read(buf) > 0) {
out.write(buf);
}
out.close();
in.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (in != null)
in.close();
if (out != null)
out.close();
}
} catch (Exception e) {
e.printStackTrace();
throw new Exception(e);
}
}
/**
* 圖片上傳
*
* @return
*/
public String uploadImage() throws Exception {
log.debug("[file]--" + file);
log.debug("[file name]--" + fileName);
imageFileName = new Date().getTime() + getExtention(fileName);
// 得到文件存放路徑
log.debug("[imageFileName]--" + imageFileName);
String dir = ServletActionContext.getServletContext().getRealPath("/UploadImages");
File dirs = new File(dir);
if (!dirs.exists())
dirs.mkdir();
// 使用原來的文件名保存圖片
String path = dir + "/" + fileName;
File imageFile = new File(path);
copy(file, imageFile);
// 縮放
zoom(imageFile);
// 給大圖添加文字水印
// watermark(imageFile);
// 給大圖添加圖片水印，可以是gif或png格式
imageWaterMark(imageFile);
// 創(chuàng)建子目錄得到添加水印后的圖片的存儲路徑,子目錄只能一級一級的建
String dist = dir + "/water";
File outFile = new File(dist);
if (!outFile.exists())
outFile.mkdir();
File sImgpath = new File(dist + "/" + fileName);
// 給小圖添加文字水印
// watermark(sImgpath);
// 給小圖添加圖片水印，可以是gif或png格式
imageWaterMark(sImgpath);
// 大圖路徑
ipath = "UploadImages/" + fileName;
// 小圖路徑
imgPath = "UploadImages/water/" + fileName;
return SUCCESS;
}
/**
* 縮放處理
*
* @return
*/
public void zoom(File imageFile) throws Exception {
log.debug("[zoom][imageFile]--" + imageFile);
try {
// 縮略圖存放路徑
File todir = new File(ServletActionContext.getServletContext().getRealPath("/UploadImages") + "/water");
if (!todir.exists()) {
todir.mkdir();
}
if (!imageFile.isFile())
throw new Exception(imageFile + " is not image file error in CreateThumbnail!");
File sImg = new File(todir, fileName);
BufferedImage Bi = ImageIO.read(imageFile);
// 假設圖片寬高最大為130 80,使用默認縮略算法
Image Itemp = Bi.getScaledInstance(130, 80, Bi.SCALE_DEFAULT);
double Ratio = 0.0;
if ((Bi.getHeight() > 130) || (Bi.getWidth() > 80)) {
if (Bi.getHeight() > Bi.getWidth())
Ratio = 80.0 / Bi.getHeight();
else
Ratio = 130.0 / Bi.getWidth();
AffineTransformOp op = new AffineTransformOp(AffineTransform.getScaleInstance(Ratio, Ratio), null);
Itemp = op.filter(Bi, null);
}
ImageIO.write((BufferedImage) Itemp, "jpg", sImg);
} catch (IOException e) {
e.printStackTrace();
throw new Exception(e);
}
}
/**
* 添加文字水印
*
* @return
* @throws Exception
* @throws Exception
*/
public void watermark(File img) throws Exception {
log.debug("[watermark file name]--" + img.getPath());
try {
if (!img.exists()) {
throw new IllegalArgumentException("file not found!");
}
log.debug("[watermark][img]--" + img);
// 創(chuàng)建一個FileInputStream對象從源圖片獲取數(shù)據(jù)流
FileInputStream sFile = new FileInputStream(img);
// 創(chuàng)建一個Image對象并以源圖片數(shù)據(jù)流填充
Image src = ImageIO.read(sFile);
// 得到源圖寬
int width = src.getWidth(null);
// 得到源圖長
int height = src.getHeight(null);
// 創(chuàng)建一個BufferedImage來作為圖像操作容器
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
// 創(chuàng)建一個繪圖環(huán)境來進行繪制圖象
Graphics2D g = image.createGraphics();
// 將原圖像數(shù)據(jù)流載入這個BufferedImage
log.debug("width:" + width + " height:" + height);
g.drawImage(src, 0, 0, width, height, null);
// 設定文本字體
g.setFont(new Font("宋體", Font.BOLD, 28));
String rand = TEXT_TITLE;
// 設定文本顏色
g.setColor(Color.blue);
// 設置透明度
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, 0.5f));
// 向BufferedImage寫入文本字符,水印在圖片上的坐標
g.drawString(rand, width - (width - 20), height - (height - 60));
// 使更改生效
g.dispose();
// 創(chuàng)建輸出文件流
FileOutputStream outi = new FileOutputStream(img);
// 創(chuàng)建JPEG編碼對象
JPEGImageEncoder encodera = JPEGCodec.createJPEGEncoder(outi);
// 對這個BufferedImage (image)進行JPEG編碼
encodera.encode(image);
// 關閉輸出文件流
outi.close();
sFile.close();
} catch (IOException e) {
e.printStackTrace();
throw new Exception(e);
}
}
/**
* 添加圖片水印
*
*/
public void imageWaterMark(File imgFile) throws Exception {
try {
// 目標文件
Image src = ImageIO.read(imgFile);
int wideth = src.getWidth(null);
int height = src.getHeight(null);
BufferedImage image = new BufferedImage(wideth, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
g.drawImage(src, 0, 0, wideth, height, null);
// 水印文件路徑
String waterImgPath = ServletActionContext.getServletContext().getRealPath("/UploadImages")+"/"+WATER_IMG_NAME;
File waterFile = new File(waterImgPath);
Image waterImg = ImageIO.read(waterFile);
int w_wideth = waterImg.getWidth(null);
int w_height = waterImg.getHeight(null);
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, 0.5f));
g.drawImage(waterImg, (wideth - w_wideth) / 2, (height - w_height) / 2, w_wideth, w_height, null);
// 水印文件結束
g.dispose();
FileOutputStream out = new FileOutputStream(imgFile);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
encoder.encode(image);
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
public void setFile(File file) {
this.file = file;
}
public String getIpath() {
return ipath;
}
public void setFileFileName(String fileName) {
this.fileName = fileName;
}
public void setImageFileName(String imageFileName) {
this.imageFileName = imageFileName;
}
public String getJson() {
return json;
}
public void setFileContentType(String fileContentType) {
this.contentType = fileContentType;
}
public String getImgPath() {
return imgPath;
}
}

import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImage;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
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 java.util.Date;
import javax.imageio.ImageIO;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
public class ImageAction extends ActionSupport {
/**
* 圖片上傳、縮放、文字水印、圖片水印
*/
private static final long serialVersionUID = -8982586906724587883L;
private Log log = LogFactory.getLog(getClass());
private static final int BUFFER_SIZE = 16 * 1024;
private static final String TEXT_TITLE = "文字水印";
private static final String WATER_IMG_NAME = "rzx.gif";
// 輸入?yún)?shù):上傳過來的文件路徑
private File file;
/**
* 輸入?yún)?shù):文件名稱 由struts的攔截器默認賦值,注意setter的寫法:file+fileName
*/
private String fileName;
/**
* 輸入?yún)?shù) 由struts的攔截器默認賦值,注意setter的寫法:file+contentType
*/
private String contentType;
// 輸出參數(shù)
private String imageFileName;
// 輸出參數(shù):原圖保存路徑
private String ipath;
// 輸出參數(shù):縮略圖保存路徑
private String imgPath;
// 輸出參數(shù)
private String json;
public ImageAction() {
}
@Override
public String execute() throws Exception {
return uploadImage();
}
/**
* 得到文件名稱
*
* @param fileName
* @return
*/
private String getExtention(String fileName) {
int pos = fileName.lastIndexOf(".");
return fileName.substring(pos);
}
/**
* 拷貝
*
* @param file
* @param imageFile
* @throws Exception
*/
private void copy(File src, File dist) throws Exception {
log.debug("[src]--" + src);
log.debug("[dist]--" + dist);
try {
InputStream in = null;
OutputStream out = null;
try {
in = new BufferedInputStream(new FileInputStream(src), BUFFER_SIZE);
out = new BufferedOutputStream(new FileOutputStream(dist), BUFFER_SIZE);
byte[] buf = new byte[BUFFER_SIZE];
while (in.read(buf) > 0) {
out.write(buf);
}
out.close();
in.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (in != null)
in.close();
if (out != null)
out.close();
}
} catch (Exception e) {
e.printStackTrace();
throw new Exception(e);
}
}
/**
* 圖片上傳
*
* @return
*/
public String uploadImage() throws Exception {
log.debug("[file]--" + file);
log.debug("[file name]--" + fileName);
imageFileName = new Date().getTime() + getExtention(fileName);
// 得到文件存放路徑
log.debug("[imageFileName]--" + imageFileName);
String dir = ServletActionContext.getServletContext().getRealPath("/UploadImages");
File dirs = new File(dir);
if (!dirs.exists())
dirs.mkdir();
// 使用原來的文件名保存圖片
String path = dir + "/" + fileName;
File imageFile = new File(path);
copy(file, imageFile);
// 縮放
zoom(imageFile);
// 給大圖添加文字水印
//		watermark(imageFile);
// 給大圖添加圖片水印，可以是gif或png格式
imageWaterMark(imageFile);
// 創(chuàng)建子目錄 得到添加水印后的圖片的存儲路徑,子目錄只能一級一級的建
String dist = dir + "/water";
File outFile = new File(dist);
if (!outFile.exists())
outFile.mkdir();
File sImgpath = new File(dist + "/" + fileName);
// 給小圖添加文字水印
//	watermark(sImgpath);
// 給小圖添加圖片水印，可以是gif或png格式
imageWaterMark(sImgpath);
// 大圖路徑
ipath = "UploadImages/" + fileName;
// 小圖路徑
imgPath = "UploadImages/water/" + fileName;
return SUCCESS;
}
/**
* 縮放處理
*
* @return
*/
public void zoom(File imageFile) throws Exception {
log.debug("[zoom][imageFile]--" + imageFile);
try {
// 縮略圖存放路徑
File todir = new File(ServletActionContext.getServletContext().getRealPath("/UploadImages") + "/water");
if (!todir.exists()) {
todir.mkdir();
}
if (!imageFile.isFile())
throw new Exception(imageFile + " is not image file error in CreateThumbnail!");
File sImg = new File(todir, fileName);
BufferedImage Bi = ImageIO.read(imageFile);
// 假設圖片寬 高 最大為130 80,使用默認縮略算法
Image Itemp = Bi.getScaledInstance(130, 80, Bi.SCALE_DEFAULT);
double Ratio = 0.0;
if ((Bi.getHeight() > 130) || (Bi.getWidth() > 80)) {
if (Bi.getHeight() > Bi.getWidth())
Ratio = 80.0 / Bi.getHeight();
else
Ratio = 130.0 / Bi.getWidth();
AffineTransformOp op = new AffineTransformOp(AffineTransform.getScaleInstance(Ratio, Ratio), null);
Itemp = op.filter(Bi, null);
}
ImageIO.write((BufferedImage) Itemp, "jpg", sImg);
} catch (IOException e) {
e.printStackTrace();
throw new Exception(e);
}
}
/**
* 添加文字水印
*
* @return
* @throws Exception
* @throws Exception
*/
public void watermark(File img) throws Exception {
log.debug("[watermark file name]--" + img.getPath());
try {
if (!img.exists()) {
throw new IllegalArgumentException("file not found!");
}
log.debug("[watermark][img]--" + img);
// 創(chuàng)建一個FileInputStream對象從源圖片獲取數(shù)據(jù)流
FileInputStream sFile = new FileInputStream(img);
// 創(chuàng)建一個Image對象并以源圖片數(shù)據(jù)流填充
Image src = ImageIO.read(sFile);
// 得到源圖寬
int width = src.getWidth(null);
// 得到源圖長
int height = src.getHeight(null);
// 創(chuàng)建一個BufferedImage來作為圖像操作容器
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
// 創(chuàng)建一個繪圖環(huán)境來進行繪制圖象
Graphics2D g = image.createGraphics();
// 將原圖像數(shù)據(jù)流載入這個BufferedImage
log.debug("width:" + width + " height:" + height);
g.drawImage(src, 0, 0, width, height, null);
// 設定文本字體
g.setFont(new Font("宋體", Font.BOLD, 28));
String rand = TEXT_TITLE;
// 設定文本顏色
g.setColor(Color.blue);
// 設置透明度
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, 0.5f));
// 向BufferedImage寫入文本字符,水印在圖片上的坐標
g.drawString(rand, width - (width - 20), height - (height - 60));
// 使更改生效
g.dispose();
// 創(chuàng)建輸出文件流
FileOutputStream outi = new FileOutputStream(img);
// 創(chuàng)建JPEG編碼對象
JPEGImageEncoder encodera = JPEGCodec.createJPEGEncoder(outi);
// 對這個BufferedImage (image)進行JPEG編碼
encodera.encode(image);
// 關閉輸出文件流
outi.close();
sFile.close();
} catch (IOException e) {
e.printStackTrace();
throw new Exception(e);
}
}
/**
* 添加圖片水印
*
*/
public void imageWaterMark(File imgFile) throws Exception {
try {
// 目標文件
Image src = ImageIO.read(imgFile);
int wideth = src.getWidth(null);
int height = src.getHeight(null);
BufferedImage image = new BufferedImage(wideth, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
g.drawImage(src, 0, 0, wideth, height, null);
// 水印文件 路徑
String waterImgPath = ServletActionContext.getServletContext().getRealPath("/UploadImages")+"/"+WATER_IMG_NAME;
File waterFile = new File(waterImgPath);
Image waterImg = ImageIO.read(waterFile);
int w_wideth = waterImg.getWidth(null);
int w_height = waterImg.getHeight(null);
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, 0.5f));
g.drawImage(waterImg, (wideth - w_wideth) / 2, (height - w_height) / 2, w_wideth, w_height, null);
// 水印文件結束
g.dispose();
FileOutputStream out = new FileOutputStream(imgFile);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
encoder.encode(image);
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
public void setFile(File file) {
this.file = file;
}
public String getIpath() {
return ipath;
}
public void setFileFileName(String fileName) {
this.fileName = fileName;
}
public void setImageFileName(String imageFileName) {
this.imageFileName = imageFileName;
}
public String getJson() {
return json;
}
public void setFileContentType(String fileContentType) {
this.contentType = fileContentType;
}
public String getImgPath() {
return imgPath;
}
}

3、struts.xml配置文件

Xml代碼

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "struts-2.0.dtd" >
<struts>
<include file="struts-default.xml" />
<constant name="struts.objectFactory" value="spring" />
<constant name="struts.devMode" value="false" />
<constant name="struts.locale" value="zh_CN" />
<constant name="struts.multipart.maxSize" value="10000000000000" />
<constant name="struts.i18n.encoding" value="utf-8" />
<package name="test" extends="struts-default">
<interceptors>
<interceptor-stack name="commonsStack">
<interceptor-ref name="exception"></interceptor-ref>
<interceptor-ref name="prepare" />
<interceptor-ref name="params" />
<interceptor-ref name="validation" />
<interceptor-ref name="workflow" />
</interceptor-stack>
<interceptor-stack name="uploadStack">
<interceptor-ref name="fileUpload">
<param name="allowedTypes">
image/bmp,image/png,image/gif,image/jpeg,image/jpg
</param>
<param name="maximumSize">50485760</param>
</interceptor-ref>
<interceptor-ref name="commonsStack" />
</interceptor-stack>
</interceptors>
<default-interceptor-ref name="commonsStack" />
</package>
<package name="image" extends="test">
<action name="image" class="imageAction">
<interceptor-ref name="uploadStack"></interceptor-ref>
<result name="input">/image.jsp</result>
<result name="success">/image.jsp</result>
</action>
</package>
</struts>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "struts-2.0.dtd" >
<struts>
<include file="struts-default.xml" />
<constant name="struts.objectFactory" value="spring" />
<constant name="struts.devMode" value="false" />
<constant name="struts.locale" value="zh_CN" />
<constant name="struts.multipart.maxSize" value="10000000000000" />
<constant name="struts.i18n.encoding" value="utf-8" />
<package name="test" extends="struts-default">
<interceptors>
<interceptor-stack name="commonsStack">
<interceptor-ref name="exception"></interceptor-ref>
<interceptor-ref name="prepare" />
<interceptor-ref name="params" />
<interceptor-ref name="validation" />
<interceptor-ref name="workflow" />
</interceptor-stack>
<interceptor-stack name="uploadStack">
<interceptor-ref name="fileUpload">
<!-- 配置允許上傳的文件類型  -->
<param name="allowedTypes">
image/bmp,image/png,image/gif,image/jpeg,image/jpg
</param>
<!-- 配置允許上傳的文件大小  -->
<param name="maximumSize">50485760</param>
<!-- 50M=50*1024*1024 byte-->
</interceptor-ref>
<interceptor-ref name="commonsStack" />
</interceptor-stack>
</interceptors>
<!-- 默認攔截器 -->
<default-interceptor-ref name="commonsStack" />
</package>
<package name="image" extends="test">
<action name="image" class="imageAction">
<interceptor-ref name="uploadStack"></interceptor-ref>
<result name="input">/image.jsp</result>
<result name="success">/image.jsp</result>
</action>
</package>
</struts>

4、spring的配置比較簡單就不貼了，在<beans>里加入一個bean就可以了。

以上完畢！

posted on 2010-07-14 21:26 Eric_jiang 閱讀(1792) 評論(0) 編輯收藏所屬分類: struts2

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