java生成csv文件乱码的解决方法示例 java导出csv乱码

import java.io.file;
import java.io.ioexception;
import java.util.list;

import com.google.common.base.charsets;
import com.google.common.base.joiner;
import com.google.common.base.preconditions;
import com.google.common.collect.lists;
import com.google.common.io.files;
import com.google.common.primitives.bytes;

public class fooutilscsvhelper {

 // csv's default delemiter is ','
 private final static string default_delimiter = ",";
 // mark a new line
 private final static string default_end = "\r\n";
 // if you do not want a utf-8 ,just replace the byte array.
 private final static byte commoncsvhead[] = { (byte) 0xef, (byte) 0xbb,
   (byte) 0xbf };

 /**
  * write source to a csv file
  *
  * @param source
  * @throws ioexception
  */
 public static void writecsv(list<list<string>> source) throws ioexception {
  // aoid java.lang.nullpointerexception
  preconditions.checknotnull(source);
  stringbuilder sbbuilder = new stringbuilder();
  for (list<string> list : source) {
   sbbuilder.append(joiner.on(default_delimiter).join(list)).append(
     default_end);
  }
  files.write(bytes.concat(commoncsvhead,
    sbbuilder.tostring().getbytes(charsets.utf_8.tostring())),
    new file("d:\\/123.csv"));
 }

 /**
  * simple read a csv file
  *
  * @param file
  * @throws ioexception
  */
 public static void readcsv(file file) throws ioexception {
  system.out.println(files.readfirstline(file, charsets.utf_8));
 }

 // run a small test yourself.
 public static void main(string[] args) throws ioexception {
  list<list<string>> source = lists.newarraylist();
  list<string> tmpl = lists.newarraylist();
  tmpl.add("测试titile1");
  tmpl.add("测试titile2");
  source.add(tmpl);
  writecsv(source);
  readcsv(new file("d:\\/123.csv"));
 }
}