通过BufferedReader读取TXT文件

window系统默认的编码是GBK，而IDE的编码多数为UTF-8，如果没有规定new InputStreamReader(new FileInputStream(file),“GBK”)为GBK会出现读取内容乱码。

//文件路径

String filePath="C:/Users/Admin/Desktop/products.txt";

File file=new File(filePath);

BufferedReader reader = null;

String tempString = null;

int line =1;

try {

// System.out.println("以行为单位读取文件内容，一次读一整行：");

reader = new BufferedReader(new InputStreamReader(new FileInputStream(file),"GBK"));

while ((tempString = reader.readLine()) != null) {

System.out.println("Line"+ line + ":" +tempString)；

line ++ ;

}

reader.close();

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}finally{

if(reader != null){

try {

reader.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

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读取TXT文件并保持在List集合

TXT文件内容

商品 价格 类型 数量

创建Product对象

public class Product{

private int id;

private String name;

private int price;

private char type;

private int count;

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//将txt文件中的产品对象读取出来并且封装成集合对象

private static List getProductFromTxt(){

List list=new ArrayList<>();

String filePath="C:/Users/Admin/Desktop/products.txt";

File file=new File(filePath);

BufferedReader reader = null;

String content = null;

int line =1;

try {

// System.out.println("以行为单位读取文件内容，一次读一整行：");

reader = new BufferedReader(new InputStreamReader(new FileInputStream(file),"GBK"));

while ((content = reader.readLine()) != null) {

//System.out.println("Line"+ line + ":" +tempString);

String[] arra=content.split(",");

Product product=new Product();

product.setId(line);

product.setName(arra[0]);

product.setPrice(Integer.parseInt(arra[1]));

char[] ch=arra[2].toCharArray();

product.setType(ch[0]);

product.setCount(Integer.parseInt(arra[3]));

list.add(product);

line ++ ;

}

reader.close();

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}finally{

if(reader != null){

try {

reader.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

return list;

}

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其中包含了String转char

char[] ch=str.toCharArray();

product.setType(ch[0]);

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版权声明：本文为CSDN博主「IManiy」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。

原文链接：https://blog.csdn.net/IManiy/article/details/83834360