java导出txt

// 输出TXT
public static void writeToTxt(HttpServletResponse response, List list) {
response.setContentType("text/plain");// 一下两行关键的设置
StringBuffer write = new StringBuffer();
String tab = " ";
String enter = "\r\n";
MagazineBean magazine;
byte[] buffer = new byte[fis.available()];
fis.read(buffer);
fis.close();
response.reset();
response.addHeader("Content-Disposition", "attachment;filename="
write.append(delNull(magazine.getChineseName()) + enter);
write.append(enter);
}
buff.write(write.toString().getBytes("UTF-8"));
buff.flush();
buff.close();
} catch (Exception e) {
e.printStackTrace();
} finally {
String path = request.getSession().getServletContext().getRealPath(
"upordown/down/model/magazinePub.txt");
String tab = " ";
// 输出TXT
public static void writeToTxt(HttpServletRequest request, List list) {
FileOutputStream outSTr = null;
BufferedOutputStream Buff = null;
throws Exception {
String name=request.getParameter("filename");
// TODO Auto-generated method stub
try {
String path = request.getSession().getServletContext().getRealPath(
response.addHeader("Content-Disposition",
"attachment;filename=期刊出版社.txt");// filename指定默认的名字
BufferedOutputStream buff = null;
for (int i = 0; i < list.size(); i++) {
magazine = (MagazineBean) list.get(i);
write.append("期刊名称：" + tab);
write = new StringBuffer();
write.append("期刊名称：" + tab);
write.append(delNull(magazine.getTenet()) + enter);
write.append(enter);
Buff.write(write.toString().getBytes("UTF-8"));
} Hale Waihona Puke Buff.flush();
Buff = new BufferedOutputStream(outSTr);
for (int i = 0; i < list.size(); i++) {
magazine = (MagazineBean) list.get(i);
outSTr.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
import ng.StringUtils;
import com.smartdot.pdm.business.corp.magazine.bean.MagazineBean;
public class MagazineUtils {
下载的代码：
Java代码
//下载
public ActionForward downFile(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
}
}
}
public static String delNull(Date date) {
String returnStr="";
if (date!=null) {
SimpleDateFormat sf=new SimpleDateFormat("yyyy年MM月");
String enter = "\r\n";
MagazineBean magazine;
StringBuffer write ;
try {
outSTr = new FileOutputStream(new File(path));
Java代码
第一种形式，是以流的开式直接response,适用于数据量不是很大的情况下。
第一种形式，是以流的开式直接response,适用于数据量不是很大的情况下。Java代码
第二种形式，是先将要下载的文件写到后台的一个文件或者excel 中，然后再进行下载。
第二种形式，是先将要下载的文件写到后台的一个文件或者excel 中，然后再进行下载。Java代码
try {
buff.close();
outSTr.close();
} catch (Exception e) {
e.printStackTrace();
import java.util.Date;
import java.util.List;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
ServletOutputStream outSTr = null;
try {
outSTr = response.getOutputStream();// 建立
buff = new BufferedOutputStream(outSTr);
"upordown/down/model/"+name);
File file = new File(path);
String filename = file.getName();
// 取得文件的扩展名ext
if (StringUtils.isNotBlank(str)) {
returnStr=str;
}
return returnStr;
}
}
第二种实现：
Java代码
第一种实现：
第一种实现：Java代码
package com.smartdot.pdm.business.corp.magazine.util;
import java.io.BufferedOutputStream;
import java.text.SimpleDateFormat;
Buff.close();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
Buff.close();
returnStr=sf.format(date);
}
return returnStr;
}
public static String delNull(String str) {
String returnStr="";
+ new String(filename.getBytes()));
response.addHeader("Content-Length", "" + file.length()); // 设置返回的文件类型
String ext = filename.substring(stIndexOf(".") + 1)
.toUpperCase();
InputStream fis = new BufferedInputStream(new FileInputStream(path));