我是java新手，正在练习解析csv文件。我已经弄明白了如何解析和使用构造函数来创建示例。但是，我的csv文件中有空字符串，控制台只是将IllegalArgumentException: No enum constant抛出给我。
我提到了：
- enum valueOf IllegalArgumentException: No enum const class
- Parse CSV file in java, and delaing with empty values
不幸的是，它不起作用。当涉及到Person和空Profession时，程序中断。我是否需要填充一些字符串，如“NONE”来匹配枚举，或者有什么方法可以处理这个问题？任何帮助或提示都非常感谢。
以下是我的Profession示例：
public enum Profession {
DOCTOR, CEO, CRIMINAL, HOMELESS, UNEMPLOYED, MUSICIAN, BOXER , UNKNOWN, NONE;
}下面是我的csv文件的样子：
[0], [1], [2], [3] , [4] , [5] , [6] , [7] , [8] , [9]
class, gender, age, bodyType, profession, pregnant, isYou ,species, isPet, role
scenario:green, , , , , , , ,
person, female, 24, average , , FALSE , , , , passenger
animal, male , 4, , , FALSE , , dog , TRUE , pedestrian
.
.下面是解析代码：
try (BufferedReader csvReader = new BufferedReader(new FileReader(csvFile));) {
String headerLine = csvReader.readLine(); //get rid of header
while ((line = csvReader.readLine()) != null) {
csvContents.add(line);// add the line to the ArrayList
}
for (String csvLine : csvContents) {
// split by comma and remove redundant spaces
String[] data = csvLine.split(",",-1);
System.out.println(data[1]);// IndexOutOfBound
Character character = null;
String clazz = data[0].toLowerCase();// cannot use word "class" as a variable
if (clazz.startsWith("scenario"&& data.length == 1)) {
scenario = new Scenario();
scenario.setLegalCrossing(clazz.endsWith("green"));
continue;
} else if ("person".equals(clazz)&& data.length == 10) {
Profession professionEnum = Profession.valueOf(data[4].toUpperCase().trim());
Gender genderEnum = Gender.valueOf(data[1].toUpperCase().trim());
BodyType bodyTypeEnum =BodyType.valueOf(data[3].toUpperCase().trim());
person = new Person(Integer.parseInt(data[2]), professionEnum ,genderEnum , bodyTypeEnum , Boolean.parseBoolean(data[5]));
person.setAsYou(Boolean.parseBoolean(data[6]));
} else if ("animal".equals(clazz)) {
Gender genderEnum = Gender.valueOf(data[1].toUpperCase().trim());
BodyType bodyTypeEnum =BodyType.valueOf(data[3].toUpperCase().trim());
animal = new Animal(Integer.parseInt(data[2]) , genderEnum , bodyTypeEnum, data[7]);
animal.setIsPet(Boolean.parseBoolean(data[8]));
}
} catch (someException e) {
e.printStackTrace();
}解析后的行看起来像：
scenario:green,,,,,,,,,
person,female,24,average,doctor,false,false,,,passenger
person,male,40,overweight,unknown,false,false,,,passenger
person,female,2,average,,false,false,,,passenger
person,male,82,average,,false,false,,,pedestrian
person,female,32,average,ceo,true,false,,,pedestrian
person,male,7,athletic,,false,false,,,pedestrian
animal,male,4,,,false,false,dog,true,pedestrian
scenario:red,,,,,,,,,
2条答案
按热度按时间x0fgdtte1#
请按以下步骤操作：
8e2ybdfx2#
如果你以后遇到了带引号的字符串标记的问题，那么你可以使用OpenCSV library或更多符合csv的读取器循环。请看这个例子。