Struts2 Validation using Annotation

Struts Validation using annotaions example.

Example1

UserAction.java

package action;

import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.validator.annotations.DateRangeFieldValidator;
import com.opensymphony.xwork2.validator.annotations.EmailValidator;
import com.opensymphony.xwork2.validator.annotations.IntRangeFieldValidator;
import com.opensymphony.xwork2.validator.annotations.RequiredStringValidator;
import com.opensymphony.xwork2.validator.annotations.StringLengthFieldValidator;
import com.opensymphony.xwork2.validator.annotations.Validations;
import java.util.Date;
import java.util.Map;
import org.apache.struts2.interceptor.RequestAware;
import org.apache.struts2.interceptor.SessionAware;

@Validations
public class UserAction extends ActionSupport 
        implements RequestAware, SessionAware {

    private String userName;
    private String password;
    private String confPassword;
    private String email;
    private Integer age;
    private Date bday;

    private Map<String, Object> requestMap;
    private Map<String, Object> sessionMap;

    public void validate() {

        if (!password.equals(confPassword)) {
            addActionError("Password mismatch");
        }
    }

    public String login() {

       return SUCCESS;
    }

    @DateRangeFieldValidator(max="12/31/2010", min="12/21/2010",
            message="Invalid Date Range")
    public Date getBday() {
        return bday;
    }

    public void setBday(Date bday) {
        this.bday = bday;
    }

    @StringLengthFieldValidator(maxLength="20", minLength="10",
            message="Invalid password length", trim=false)
    @RequiredStringValidator(message="Enter Password")
    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    @StringLengthFieldValidator(maxLength="20", minLength="10",
            message="Invalid username length", trim=true)
    @RequiredStringValidator(message="Enter Username")
    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    @RequiredStringValidator(message="Enter Confirm Password")
    public String getConfPassword() {
        return confPassword;
    }

    public void setConfPassword(String confPassword) {
        this.confPassword = confPassword;
    }

    @RequiredStringValidator(message="Enter email")
    @EmailValidator(message="Invalid email")
    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    @IntRangeFieldValidator(min="18", max="25",message="Invalid age")    
    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public void setRequest(Map<String, Object> map) {
        System.out.println("set request");
        requestMap = map;
    }

    public void setSession(Map<String, Object> map) {
        System.out.println("set session" );
        sessionMap = map;
    }

}

Example 2
UserAction.java

package action;

    import com.opensymphony.xwork2.validator.annotations.RequiredStringValidator;
    import com.opensymphony.xwork2.validator.annotations.Validation;
    import javax.servlet.http.HttpServletRequest;
    import org.apache.struts2.ServletActionContext;
    import com.opensymphony.xwork2.ActionSupport;

    @Validation
    public class UserAction extends ActionSupport {

        private String userName;
        private String password;

        public String signIn() {
            
            if(check user name and password with DB. if return true){    
                return SUCCESS;
            }
            else{
                addActionError("Invalid Usernme or Password");
                return INPUT;
            }
        }
       
        @RequiredStringValidator(message="Username Is Required")
        public String getUserName() {
            return userName;
        }

        public void setUserName(String userName) {
            this.userName = userName;
        }

        @RequiredStringValidator(message="Password Is Required")
        public String getPassword() {
            return password;
        }

        public void setPassword(String password) {
            this.password = password;
        }
    }