How to convert field of the list item via custom struts type converter?

问题

I need to implement custom conversion for ID field in Company and Employee classes. I have already implemented custom converter extended from StrutsTypeConverter and it is successfully used to convert Company.ID field, but it does not work for Employee.ID.

Seems like the main problem is in conversion properties file. How should I specify converter class for employee ID field in conversion properties file?

MyAction-conversion.properties:

company.id = com.struts2.convertors.MyCustomConverter
company.??????.id = com.struts2.convertors.MyCustomConverter

MyAction:

public class MyAction extends ActionSupport {

    private Company company;

    public Company getCompany () {
        return company;
    }
    public void setCompany (Company company) {
        this.company= company;
    }
    @Override
    public String execute() {
        return SUCCESS;
    }
}

Company:

public class Company {

    private ID id;

    private List<Employee> employees;

    // getters and setters
}

Employee

public class Employee{

    private ID id;

    private String name;

    // getters and setters
}

回答1:

TypeConversion Annotation:

This annotation is used for class and application wide conversion rules.

The TypeConversion annotation can be applied at property and method level.

 @TypeConversion(converter = “com.test.struts2.MyConverter”)
 public void setAmount(String amount) 
 {
    this.amount = amount;
 }

This annotation specifies the location of one of my converters. literally, by using this annotation, I register my class com.test.struts2.MyConverter as a converter, and gets executed every time when setAmount(String amount) method is invoked.

回答2:

Try the following by adding a converter for the ID type to the xwork-conversion.properties file

com.struts2.ID = com.struts2.convertors.MyCustomConverter

来源：https://stackoverflow.com/questions/17898920/how-to-convert-field-of-the-list-item-via-custom-struts-type-converter

标签

java

struts2

type-conversion

struts