[Java] Add quotes only to specific CSV columns

background

--I'm trying to create a CSV output function in Spring --The base was created immediately by imitating this article.

Task

--I want to add quotes only to specific columns in CSV ――After a little research, I could only add or not add quotes to all String type columns.

counter-measure

--Set all String types to have quotes --Add @JsonRawValue to columns you don't want to add quotes

sample

SampleController.java

@RestController
public class SampleController {
    @GetMapping(value="/sample.csv", produces="text/csv;charset=utf-8;Content-Disposition:attachment")
    public String csv() throws JsonProcessingException {
        List<UserBean> rows = new ArrayList<UserBean>() {
            {
                add(new UserBean("ozaki", "runners", 27));
            }
        };
        CsvMapper mapper = new CsvMapper();
        //If you add withHeader, a header will be added to the first line.
        CsvSchema schema = mapper.schemaFor(UserBean.class).withHeader();
        // ALWAYS_QUOTE_If STRINGS is used, String type columns will have quotes.
        mapper.configure(CsvGenerator.Feature.ALWAYS_QUOTE_STRINGS, true);
        return mapper.writer(schema).writeValueAsString(rows);
    }
}

UserBean.java

//Set the order of CSV columns
@JsonPropertyOrder({"name", "team", "age"})
public class UserBean {
    private String name;
    //Quarts are not attached with JsonRawValue
    @JsonRawValue
    private String team;
    private Integer age;

    public UserBean(String name, String team, Integer age) {
        this.name = name;
        this.team = team;
        this.age = age;
    }

    /* setter/getter */

sample.csv

"name","team","age"
"ozaki",runners,27