要使用CsvReader,CsvWriter需要下载一个javacsv.jar导入到项目中
package test;import com.csvreader.CsvReader;import com.csvreader.CsvWriter;import java.io.BufferedReader; import java.io.BufferedWriter;import java.io.File; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.FileWriter;import java.io.IOException; public class readandwrite { public static void main(String[] args) throws IOException { String [] str ={"省","市","区","街","路","里","幢","村","室","园","苑","巷","号"}; String inString = ""; String tmpString = ""; File inFile = new File("C://in.csv"); // 读取的CSV文件 File outFile = new File("C://outtest.csv");//输出的CSV文 try { BufferedReader reader = new BufferedReader(new FileReader(inFile)); BufferedWriter writer = new BufferedWriter(new FileWriter(outFile)); CsvReader creader = new CsvReader(reader, ','); CsvWriter cwriter = new CsvWriter(writer,','); while(creader.readRecord()){ inString = creader.getRawRecord();//读取一行数据 for(int i = 0;i < str.length;i++){ tmpString = inString.replace(str[i], "," + str[i] + ","); inString = tmpString; } //第一个参数表示要写入的字符串数组,每一个元素占一个单元格,第二个参数为true时表示写完数据后自动换行 cwriter.writeRecord(inString.split(","), true); //注意,此时再用cwriter.write(inString)方法写入数据将会看到只往第一个单元格写入了数据,“,”没起到调到下一个单元格的作用 //如果用cwriter.write(String str)方法来写数据,则要用cwriter.endRecord()方法来实现换行 //cwriter.endRecord();//换行 cwriter.flush();//刷新数据 } creader.close(); cwriter.close(); } catch (FileNotFoundException ex) { ex.printStackTrace(); } }}
先占用一下,没人给你写我再帮你写吧。