writeAll（ResultSet res，Boolean b）opencsv方法在数据周围添加双引号

当我使用此函数写入csv文件时，所有数据都嵌入双引号中。

有没有办法写入没有双引号的csv文件？

CSVWriter writer = new CSVWriter(new FileWriter(table+".csv"), '\t'); writer.writeAll(rset, true); writer.close(); 

该文件包含表单中的数据

 "EMPNO" "ENAME" "JOB" "MGR" "HIREDATE" "SAL" "COMM" "DEPTNO" "TAG" "LOOKUP" "7369" "SMITH" "CLERK" "7902" "17-Dec-1980" "800" "2" "20" "E" "1" "7499" "ALLEN" "SALESMAN" "7698" "20-Feb-1981" "1600" "2" "30" "E" "2" "7521" "WARD" "SALESMAN" "7698" "22-Feb-1981" "1250" "2" "30" "E" "3" "7566" "JONES" "MANAGER" "7839" "02-Apr-1981" "2975" "2" "20" "E" "2" 

Answer 1

 CSVWriter writer = new CSVWriter(new FileWriter(table+".csv"), '\t', CSVWriter.NO_QUOTE_CHARACTER); writer.writeAll(rset, true); writer.close(); 

参考： opencsv CSVWriter JavaDoc

Answer 2

我想通过@ user591593添加到上一个答案（没有足够的点来添加注释） – 在使用NO_QUOTE_CHARACTER构造函数时，您应该自己转义值。 请参见StringEscapeUtils

更重要的是，最好指定一个正确的编码，例如UTF-8，而不是假设系统默认是正确的：

 CSVWriter writer = new CSVWriter(new OutputStreamWriter(new FileOutputStream(file), "UTF-8"), '\t', CSVWriter.NO_QUOTE_CHARACTER); String s = "some fun \t string with \" double quotes and \n new lines"; writer.writeNext(StringEscapeUtils.escapeCsv(s));