Integrate Bean Validation (JSR303) with Struts2 -- Struts2 Action Sample

Integrate Bean Validation (JSR303) with Struts2 -- Outline
最後是一個套用JSR303的Action sample code。

代碼：

package com.gss.gmo.cao.struts2.interceptor;

import javax.validation.constraints.Max;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotNull;

import lombok.Setter;

import com.gss.gmo.cao.struts2.interceptor.validation.ValidateFieldConfig;
import com.gss.gmo.cao.struts2.interceptor.validation.ValidateGroupConfig;
import com.gss.gmo.cao.struts2.interceptor.validation.ValidateMessageFormatter;
import com.opensymphony.xwork2.ActionSupport;

public class UserAction extends ActionSupport implements ValidateMessageFormatter {

    private static final long serialVersionUID = 1L;

    @Setter
    @NotNull
    private String username;

    @Setter
    @Min(1)
    @Max(99)
    private int age;

    @Setter
    private UserAction user;

    @ValidateGroupConfig
    public String execute() {
        return SUCCESS;
    }

    @ValidateFieldConfig(fields = "user")
    public String validateFieldConfig() {
        return SUCCESS;
    }

    @Override
    public String format(String fieldName, String errorMessage) {
        return fieldName + " - " + errorMessage;
    }

}