标题翻译
How do I fix java.lang.ArrayIndexOutOfBoundsException: Index 1 out of bounds for length 1 error?
问题
我已经阅读了文档以及关于它的一系列教程，但是我仍然不能理解如何修复我的代码中的“Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Index 1 out of bounds for length 1”错误，因为我无论如何都看不出有什么问题。
public HashMap<String, product> getAllProducts() {
HashMap<String, product> productMap = new HashMap<String, product>();
//从外部文件创建文件对象
File productFile = new File("src/main/resources/stock.sample.csv");
// 使用 try-catch 块在读取文件时捕获异常
try {
// 通过 Scanner 读取外部文件：stock.sample.csv
Scanner scanner = new Scanner(productFile);
while (scanner.hasNext()){
String fileRecord = scanner.nextLine();
String[] fileRecordSplit = fileRecord.split(",");
product product = new product();
product.setId(fileRecordSplit[0]);
product.setName(fileRecordSplit[1]); // 抛出 java.lang.ArrayIndexOutOfBoundsException:
// Index 1 超出长度 1 的界限
product.setCategory(fileRecordSplit[2]);
Price price = new Price();
price.setAmount(Double.parseDouble(fileRecordSplit[3]));
product.setPrice(price);
productMap.put(product.getId(), product);
}
} catch (FileNotFoundException e){
// TODO: 处理异常
e.printStackTrace();
}
return productMap;
}
}
英文翻译
So I already read the documentation and a bunch of tutorials on it but it's still not clicking in my head how to fix the "Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Index 1 out of bounds for length 1" error in my code since I can't for the life of me see anything wrong with it.
public HashMap<String, product> getAllProducts() {
HashMap<String, product> productMap = new HashMap<String, product>();
//create a file object from the external file
File productFile = new File("src/main/resources/stock.sample.csv");
// Catch Exception when reading the file using try-catch block
try {
// Read an external file: stock.sample.csv via Scanner
Scanner scanner = new Scanner(productFile);
while (scanner.hasNext()){
String fileRecord = scanner.nextLine();
String[] fileRecordSplit = fileRecord.split(",");
product product = new product();
product.setId(fileRecordSplit[0]);
product.setName(fileRecordSplit[1]); // Throws the java.lang.ArrayIndexOutOfBoundsException:
// Index 1 out of bounds for length 1
product.setCategory(fileRecordSplit[2]);
Price price = new Price();
price.setAmount(Double.parseDouble(fileRecordSplit[3]));
product.setPrice(price);
productMap.put(product.getId(), product);
}
} catch (FileNotFoundException e){
// TODO Auto-generated catch block
e.printStackTrace();
}
return productMap;
}
}
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