我要评论复制代码 代码如下:
package com.huateng.readcsv;
import java.io.bufferedreader;
import java.io.filereader;
import java.util.arraylist;
import java.util.iterator;
import java.util.list;
public class csvutil {
private string filename = null;
private bufferedreader br = null;
private list<string> list = new arraylist<string>();
public csvutil() {
}
public csvutil(string filename) throws exception {
this.filename = filename;
br = new bufferedreader(new filereader(filename));
string stemp;
while ((stemp = br.readline()) != null) {
list.add(stemp);
}
}
public list getlist() {
return list;
}
/**
* 获取行数
* @return
*/
public int getrownum() {
return list.size();
}
/**
* 获取列数
* @return
*/
public int getcolnum() {
if (!list.tostring().equals("[]")) {
if (list.get(0).tostring().contains(",")) {// csv为逗号分隔文件
return list.get(0).tostring().split(",").length;
} else if (list.get(0).tostring().trim().length() != 0) {
return 1;
} else {
return 0;
}
} else {
return 0;
}
}
/**
* 获取制定行
* @param index
* @return
*/
public string getrow(int index) {
if (this.list.size() != 0) {
return (string) list.get(index);
} else {
return null;
}
}
/**
* 获取指定列
* @param index
* @return
*/
public string getcol(int index) {
if (this.getcolnum() == 0) {
return null;
}
stringbuffer sb = new stringbuffer();
string tmp = null;
int colnum = this.getcolnum();
if (colnum > 1) {
for (iterator it = list.iterator(); it.hasnext();) {
tmp = it.next().tostring();
sb = sb.append(tmp.split(",")[index] + ",");
}
} else {
for (iterator it = list.iterator(); it.hasnext();) {
tmp = it.next().tostring();
sb = sb.append(tmp + ",");
}
}
string str = new string(sb.tostring());
str = str.substring(0, str.length() - 1);
return str;
}
/**
* 获取某个单元格
* @param row
* @param col
* @return
*/
public string getstring(int row, int col) {
string temp = null;
int colnum = this.getcolnum();
if (colnum > 1) {
temp = list.get(row).tostring().split(",")[col];
} else if(colnum == 1){
temp = list.get(row).tostring();
} else {
temp = null;
}
return temp;
}
public void csvclose()throws exception{
this.br.close();
}
public static void main(string[] args)throws exception {
csvutil util = new csvutil("d:\\demo.csv");
int rownum = util.getrownum();
int colnum = util.getcolnum();
string x = util.getrow(2);
string y = util.getcol(2);
system.out.println("rownum:" + rownum);
system.out.println("colnum:" + colnum);
system.out.println("x:" + x);
system.out.println("y:" + y);
for(int i=1;i<rownum;i++){
for(int j=0;j<colnum;j++){
system.out.println("result[" + i + "|" + j + "]:" + util.getstring(i, j));
}
}
}
}
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