本文主要是介绍工作总结之----生成缩略图并上传，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
/*** 保存项目
* @param request
* @param response
* @return
*/
@RequestMapping(value = "/saveData", method = RequestMethod.POST)
@ResponseBody
public HashMap saveDataNews(HttpServletRequest request, HttpServletResponse response) throws Exception {
HashMap map = new HashMap();
MultipartHttpServletRequest multipartHttpServletRequest = (MultipartHttpServletRequest) request;
//缩略图
MultipartFile multipartFile1 = multipartHttpServletRequest.getFile("file1");
Long si = multipartFile1.getSize();
if(si>0){
Properties properties = ConfigUtil.PROPERTIES;
String path = properties.getProperty("imageResourcrsPath");
path = path + "/image";
// 获取上传的图片文件
String fileName = multipartFile1.getOriginalFilename();
File file = new File(fileName);
File f = new File(path);
if (!f.exists()) {
f.mkdirs();
}
// 防止出现重名文件--uuid重命名
File newFile = FileUtil.renameFile(file);
// 服务器存的真实名字
String newFileName = newFile.getName();
// 服务器路径（路径+真实名字）
StringBuffer newPaths = new StringBuffer(path);
newPaths.append("\\");
newPaths.append(newFileName);
// 路径+真实名字
String newPath = newPaths.toString();
// 服务器中文件
File targetFile = new File(path, newFileName);
try {
multipartFile1.transferTo(targetFile);
processUploadedFile(newPaths.toString(),newFileName);
} catch (Exception a) {
a.printStackTrace();
}
StringBuffer thuPath = new StringBuffer();
String str = "/resource/image/small-";
thuPath = thuPath.append(str).append(newFileName);
//图片服务器存储路径
String thumbnailPath=thuPath.toString();
//图片名称
String thumbnailName="small-" + fileName;
Thumbnail thum =new Thumbnail();
thum.setThumbnailPath(thumbnailPath);
thum.setThumbnailName(thumbnailName);
newsListService.insertSelective(thum);//保存缩略图信息
}
Integer code = 1;
map.put("code", code);
return map;
}
/**
* <p>
* Description: 上传文件重命名
* </p>
*
* @param file
* 文件名
* @return 文件
* @author : gaoying
* @update :
* @date : 2015-7-26
*/
public static File renameFile(File file) {
String body = "";
String ext = "";
Date date = new Date();
int pot = file.getName().lastIndexOf(".");
if (pot != -1) {
// body = date.getTime() + "";
body = UUID.randomUUID().toString().replace("-", "");
ext = file.getName().substring(pot);
} else {
body = (new Date()).getTime() + "";
ext = "";
}
String newName = body + ext;
file = new File(file.getParent(), newName);
return file;
}
//生成缩略图的操作
private void processUploadedFile(String path, String name) throws Exception {
long time = System.currentTimeMillis();
GMOperation op = new GMOperation();
//待处理图片的绝对路径
op.addImage(path);
//图片压缩比，有效值范围是0.0-100.0，数值越大，缩略图越清晰 s
op.quality(100.0);
//width 和height可以是原图的尺寸，也可以是按比例处理后的尺寸
op.addRawArgs("-resize", "500");
//宽高都为100
//op.addRawArgs("-resize", "100x100");
op.addRawArgs("-gravity", "center");
//op.resize(100, null);
//从属性文件中读取缩略图的保存路径
Properties properties = ConfigUtil.PROPERTIES;
String smallpath = properties.getProperty("imageResourcrsPath");
smallpath = smallpath + "/image";
File smallFile = new File(smallpath);
if(!smallFile.exists()) {
smallFile.mkdir();
}
op.addImage(smallFile.getAbsolutePath() + "/" + "small-" + name);
// 如果使用ImageMagick，设为false,使用GraphicsMagick，就设为true，默认为false
ConvertCmd convert = new ConvertCmd(true);
String osName = System.getProperty("os.name").toLowerCase();
if (osName.contains("win")) {
//linux下不要设置此值，不然会报错
convert.setSearchPath(properties.getProperty("thumbnailPath"));
}
convert.run(op);
//压缩图片保存
}
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