网上看了很多，本文使用ant.jar中的org.apache.tools.zip，页面用js表单提交
代码供参考：
ACTION:
/*
* 另存为
*/
@RequestMapping("/saveAs.do")
public @ResponseBody
void saveAs(String filePath, String fileName) {
try {
File file = new File(filePath);
// 设置文件MIME类型
getResponse().setContentType(getMIMEType(file));
// 设置Content-Disposition
getResponse().setHeader(
"Content-Disposition",
"attachment;filename="
+ URLEncoder.encode(fileName, "UTF-8"));
// 获取目标文件的绝对路径
String fullFileName = getRealPath("/upload/" + filePath);
// System.out.println(fullFileName);
// 读取文件
InputStream ins = new FileInputStream(fullFileName);
// 放到缓冲流里面
BufferedInputStream bins = new BufferedInputStream(ins);
// 获取文件输出IO流
// 读取目标文件，通过response将目标文件写到客户端
OutputStream outs = getResponse().getOutputStream();
BufferedOutputStream bouts = new BufferedOutputStream(outs);
// 写文件
int bytesRead = 0;
byte[] buffer = new byte[8192];
// 开始向网络传输文件流
while ((bytesRead = bins.read(buffer, 0, 8192)) != -1) {
bouts.write(buffer, 0, bytesRead);
}
bouts.flush();// 这里一定要调用flush()方法
ins.close();
bins.close();
outs.close();
bouts.close();
} catch (Exception e) {
e.printStackTrace();
}
}
/*
* 批量下载另存为
*/
@RequestMapping("/batDownload.do")
public @ResponseBody
void batDownload(String filePaths, String fileNames) {
String tmpFileName = "work.zip";
byte[] buffer = new byte[1024];
String strZipPath = getRealPath("/upload/work/"+tmpFileName);
try {
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(
strZipPath));
String[] files=filePaths.split("\|",-1);
String[] names=fileNames.split("\|",-1);
// 下载的文件集合
for (int i = 0; i < files.length; i++) {
FileInputStream fis = new FileInputStream(getRealPath("/upload/"+files[i]));
out.putNextEntry(new ZipEntry(names[i]));
//设置压缩文件内的字符编码，不然会变成乱码
out.setEncoding("GBK");
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();
saveAs("work/"+tmpFileName, tmpFileName);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 根据文件后缀名获得对应的MIME类型。
*
* @param file
*/
private String getMIMEType(File file) {
String type = "*/*";
String fName = file.getName();
// 获取后缀名前的分隔符"."在fName中的位置。
int dotIndex = fName.lastIndexOf(".");
if (dotIndex < 0) {
return type;
}
/* 获取文件的后缀名 */
String end = fName.substring(dotIndex, fName.length()).toLowerCase();
if (end == "")
return type;
// 在MIME和文件类型的匹配表中找到对应的MIME类型。
for (int i = 0; i < MIME_MapTable.length; i++) {
if (end.equals(MIME_MapTable[i][0]))
type = MIME_MapTable[i][1];
}
return type;
}
private final String[][] MIME_MapTable = {
// {后缀名， MIME类型}
{ ".doc", "application/msword" },
{ ".docx",
"application/vnd.openxmlformats-officedocument.wordprocessingml.document" },
{ ".xls", "application/vnd.ms-excel" },
{ ".xlsx",
"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" },
{ ".pdf", "application/pdf" },
{ ".ppt", "application/vnd.ms-powerpoint" },
{ ".pptx",
"application/vnd.openxmlformats-officedocument.presentationml.presentation" },
{ ".txt", "text/plain" }, { ".wps", "application/vnd.ms-works" },
{ "", "*/*" } };
};
<form id="batForm" action="<%=path%>/file/batDownload.do" method="post"> <input type="hidden" id="filePaths" name="filePaths" value=""/> <input type="hidden" id="fileNames" name="fileNames" value=""/> </form>
function download(){
var objs=$("#fileFrame").contents().find("input[name='ckFile']:checked");
if(objs.length>0){
var filePaths="";
var fileNames="";
for(var i=0;i<objs.length;i++){
filePaths+=$("#fileFrame").contents().find("#path_"+objs[i].value).val()+"|";
fileNames+=$("#fileFrame").contents().find("#a_"+objs[i].value).html()+"|";
}
filePaths=filePaths.substring(0,filePaths.length-1);
fileNames=fileNames.substring(0,fileNames.length-1);
$("#filePaths").val(filePaths);
$("#fileNames").val(fileNames);
$("#batForm").submit();
}else{
alert("请选择需要下载的文件！");
return false;
}
}
DEMO下载地址：https://dwz.cn/Jw3z6fVq