/**
*
* @param uploadImage --本地路径(tomacat路径)
* @param serverDir --服务器路径
* @param imageType --文件或图片类型
* 此方法可以上传文件或图片.txt,.jpg,.gif等
*/
public void upload(String uploadImage,String serverDir,String imageType){
FileInputStream fis=null;
FileOutputStream fos=null;
//服务器路径
File serverFile=new File(serverDir);
if(!serverFile.exists()){
serverFile.mkdir();
}
String serverPath=separator+BbsUtil.getCurrentMonth()+imageType;
serverFile=new File(serverDir+serverPath);
try {
// if(!serverFile.exists()){
// serverFile.createNewFile();
// }
fis=new FileInputStream(new File(uploadImage));
fos=new FileOutputStream(serverFile);
byte[] buffer = new byte[1024];
int len = 0;
while ((len = fis.read(buffer)) > 0) {
fos.write(buffer, 0, len);
}
fos.flush();
} catch (Exception e) {
e.printStackTrace();
}finally{
try {
fos.close();
fis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
*
* @param path 本地路径
* @param serverDir 服务器目录
* @param serverFile 服务器文件
* @param smallSize 文件大小
* @param middleSize 。。。
* @param maxSize 。。。
* @return
*/
public boolean compressImage(File path,String serverDir,String serverFile,String smallSize, String middleSize,String maxSize){
String fileName=path.getName();
String msg="";
if(!path.canRead()){
msg="图片"+fileName+"不可读！";
throw new NullPointerException(msg);
}
File serverPathFile=new File(serverDir);
if(!serverPathFile.exists()){
serverPathFile.mkdir();
}
FileOutputStream out = null;// 文件输出流
int width=0;
int height=0;
BufferedImage tag=null;
try{
/* ============= 中图 处理 ================== */
// 建立输出流
out = new FileOutputStream(serverDir+separator+serverFile );
out.flush();
// 依照固定大小画图区域300*300
width = Integer.parseInt(middleSize);
height = width;
Image src = javax.imageio.ImageIO.read(path);
tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
tag.getGraphics().drawImage(src, 0, 0, width, height, null);
// 画图操作
JPEGCodec.createJPEGEncoder(out).encode(tag);
out.close();
}catch(Exception e){
e.printStackTrace();
}
return true;
}
public String getImageType(String path){
if(path.lastIndexOf(".")==-1){
new NullPointerException("上传文档格式不正确！");
}
String imageType=path.substring(path.lastIndexOf("."),path.length());
return imageType;
}
///////////////////////////下载功能、、、、、、、、、、、、、、、、、
public String downloadFile(){
String filename = getHttpServletRequest().getParameter("filename");//"1a.txt";
String filepath = getHttpServletRequest().getParameter("filepath");//"d:\\";
try {
filename=new String(filename.getBytes("ISO8859-1"),"utf-8").replaceAll("%20", " ");
filepath=new String(filepath.getBytes("iso8859-1"),"utf-8").replaceAll("%20", " ");
} catch (UnsupportedEncodingException e1) {
e1.printStackTrace();
}
try {
if (filename == null || filepath == null || "".equals(filename) || "".equals(filepath)) {
System.out.println("找不到要下载的文件！");
} else {
String fullpath = filepath +File.separator+filename;
File file = new File(fullpath);
if (file == null || !file.exists()) {
System.out.println("找不到要下载的文件！");
} else {
getHttpServletResponse().setContentType("application/octet-stream");
//解决中文乱码\不直接打开文件
getHttpServletResponse().setHeader("Content-Disposition", "attachment;filename = " + new String(filename.getBytes("gb2312"),"ISO8859-1" ));
BufferedInputStream input = new BufferedInputStream(new FileInputStream(fullpath));
byte buffBytes[] = new byte[1024];
int allLength = 0;
System.out.println("下载文件路径：" + fullpath);
System.out.println("开始下载");
OutputStream os = getHttpServletResponse().getOutputStream();
System.out.println("获得流之前");
int read = 0;
while ((read = input.read(buffBytes)) != -1) {
allLength += read;
os.write(buffBytes, 0, read);
}
System.out.println("获得流之后：" + allLength);
os.flush();
os.close();
input.close();
System.out.println("正常关闭文件流");
}
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
