package changeString;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 Listlist = new ArrayList();
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;
}
}
/**
* 获取指定行
* @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();
}
}
