思想：先获取csv文件的路径，通过BufferedReader类去读该路径中的文件，使用readLine方法进行逐行读取。
注意：使用readLine方法后会自动转到下一行。因此在判断是否为空后得先将读取到的内容赋值给一变量，在循环中使用该变量即可。
public static void main(String[] args){
File csv = new File("C:\\Users\\chenxumin\\Desktop\\Result.csv") // CSV文件路径
BufferedReader br = null
try
{
br = new BufferedReader(new FileReader(csv))
} catch (FileNotFoundException e)
{
e.printStackTrace()
}
String line = ""
String everyLine = ""
try {
List<String> allString = new ArrayList<>()
while ((line = br.readLine()) != null) //读取到的内容给line变量
{
everyLine = line
System.out.println(everyLine)
allString.add(everyLine)
}
System.out.println("csv表格中所有行数："+allString.size())
} catch (IOException e)
{
e.printStackTrace()
}
}
import java.io.BufferedReaderimport java.io.FileReader
import java.util.*
public class Test{
public static void main(String[] args) {
Hashtable<String, String[]> dict = new Hashtable<String, String[]>()
try {
BufferedReader reader = new BufferedReader(new FileReader("test.csv"))
String line = null
while((line=reader.readLine())!=null){
String item[] = line.split(",")
String item2[] = new String[19]
System.arraycopy(item,1,item2,0,19)
dict.put(item[0],item2)
}
Enumeration e2 = dict.keys()
while (e2.hasMoreElements()) {
String key = (String) e2.nextElement()
System.out.println(key)
String[] dd = (String[])dict.get(key)
for (int i=0i<dd.lengthi++) {
System.out.print(dd[i]+"\t")
}
System.out.println()
}
}
catch (Exception e) {
e.printStackTrace()
}
}
}
