Java实现的图片上传工具类完整实例

Java实现的图片上传工具类完整实例

本文实例讲述了java实现的图片上传工具类。分享给大家供大家参考，具体如下：

package com.gcloud.common;

import javax.imageio.ImageIO;

import java.awt.image.BufferedImage;

import java.io.*;

/**

* 图片上传工具类

* Created by charlin on 2017/9/10.

*/

public class UploadImageUtil {

private String fileType;

private Long maxSize;

private Long width;

private Long height;

public UploadImageUtil() { }

public UploadImageUtil(String fileType, Long maxSize, Long width, Long height) {

this.fileType = fileType;

this.maxSize = maxSize;

this.width = width;

this.height = height;

}

/**

* 检查上传图像大小

*

* @param upload

* @param uploadFileName

* @param uploadContentType

* @return

*/

public String checkUploadImage(File upload, String uploadFileName, String uhttp://ploadContentType) {

try {

if (fileType != null) {

String[] fileTypes = fileType.split(",");

int count = 0;

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

if (uploadContentType.equals(fileTypes[i])) {

count++;

continue;

}

}

if (count == 0) {

return "您上传的文件类型不对!";

}

}

BufferedImage bi = ImageIO.read(upload);

int w = bi.getWidth();

int h = bi.getHeight();

if (w > width || h > height) {

return "上传照片宽度和高度不符合要求";

}

if (upload.length() > maxSize) {

return "上传照片过大";

}

} catch (IOException e) {

e.printStackTrace();

}

return null;

}

/**

* 图片上传

*

* @param upload

* @param uploadFileName

* @param path

* @return

* @throws Exception

*/

public void uploadImage(File upload, String uploadFileName, String path) throws Exception {

InputStream is = null;

OutputStream os = null;

try {

is = new FileInputStream(upload);

File f = new File(path);

if (!f.exists()) f.mkdirs();

os = new FileOutputStream(path + "/" + uploadFileName);

byte buffer[] = new byte[1024];

int count = 0;

int flag = 0;

while ((count = is.read(buffer)) > 0) {

os.write(buffer, 0, count);

}

} catch (FileNotFoundException e) {

} catch (IOException e) {

File f = new File(path + "/" + uploadFileName);

if (f.exists()) {

f.delete();

}

} finally {

try {

os.close();

is.close();

} catch (IOException ioe) {

}

}

}

/**

* 清除文件

* @param path

*/

public void clear(String path) {

File file = new File(path);

if (file.isFile() && file.exists()) {

file.delete();

}

}

public String getFileType() {

return fileType;

}

public void setFileType(String fileType) {

this.fileType = fileType;

}

public Long getMaxSize() {

return maxSize;

}

public void setMaxSize(Long maxSize) {

this.maxSize = maxSize;

}

public Long getWidth() {

return width;

}

public void setWidth(Long width) {

this.width = width;

}

public Long getHeight() {

return height;

}

public void setHeight(Long height) {

this.height = height;

}

}

更多java相关内容感兴趣的读者可查看本站专题：《Java图片操作技巧汇总》、《java日期与时间操作技巧汇总》、《Java操作DOM节点技巧总结》、《Java文件与目录操作技巧汇总》及《Java数据结构与算法教程》。

希望本文所述对大家java程序设计有所帮助。

版权声明：本文内容由网络用户投稿，版权归原作者所有，本站不拥有其著作权，亦不承担相应法律责任。如果您发现本站中有涉嫌抄袭或描述失实的内容，请联系我们jiasou666@gmail.com 处理，核实后本网站将在24小时内删除侵权内容。