单个文件的上传用前端part上传,下载不能使用ajax,因为json没有io;
以下案例都能运行!!!
多文件的上传可以选择webuploader(baidu的,需导入webuploader的js和css),网上有很多案例;
如下案例:
http://blog.csdn.net/u013946285/article/details/51228096
https://www.cnblogs.com/wbyp/p/6574971.html
http://blog.csdn.net/songmaolin_csdn/article/details/74331421
多文件下载*(zip打包),如下
转自:http://blog.csdn.net/liweibin_/article/details/8842928
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
public class ZipOutputStreamDemo {
public static void main(String[] args) throws Exception {
byte[] buffer = new byte[1024];
//生成的ZIP文件名为Demo.zip
String strZipName = "Demo.zip";
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(strZipName));
//需要同时下载的两个文件result.txt ,source.txt
File[] file1 = {new File("result.txt"),new File("source.txt")};
for(int i=0;i<file1.length;i++) {
FileInputStream fis = new FileInputStream(file1[i]);
out.putNextEntry(new ZipEntry(file1[i].getName()));
int len;
//读入需要下载的文件的内容,打包到zip文件
while((len = fis.read(buffer))>0) {
out.write(buffer,0,len);
}
out.closeEntry();
fis.close();
}
out.close();
System.out.println("生成Demo.zip成功");
}