j2ee之struts2转换器

继承默认装换器的转换方式

package com.newtouch.struts2;

import java.util.Map;
import java.util.StringTokenizer;

import com.newtouch.entity.User;

import ognl.DefaultTypeConverter;

public class DIYConvert extends DefaultTypeConverter {
    @SuppressWarnings("rawtypes")
    @Override
    public Object convertValue(Map context, Object value, Class toType) {
        if (User.class == toType) {
            String[] values = (String[]) value;
            StringTokenizer stringTokenizer = new StringTokenizer(values[0], ";");
            String username = stringTokenizer.nextToken();
            String password = stringTokenizer.nextToken();
            User user = new User();
            user.setPassword(password);
            user.setUsername(username);
            System.out.println(user);
            return user;
        } else if (String.class == toType) {
            User user = (User) value;
            String strinfo = user.getPassword() + user.getUsername();
            return strinfo;
        }
        return null;
    }
}

在配置文件中配置你要转换的对象以及转换器的路径

配置文件的名字规定为：acitionName-conversion.properties 且配置文件的路径是在当前action的包下

user=com.newtouch.struts2.DIYConvert

方式二：继承StrutsTypeConverter

package com.newtouch.struts2;

import java.util.Map;
import java.util.StringTokenizer;

import org.apache.struts2.util.StrutsTypeConverter;

import com.newtouch.entity.User;

public class TheStrutsConversion extends StrutsTypeConverter {

    @Override
    public Object convertFromString(Map map, String[] as, Class class1) {
        System.out.println("convertopen");
        String string = as[0];
        StringTokenizer stringTokenizer = new StringTokenizer(string, ";");
        User user = new User();
        user.setUsername(stringTokenizer.nextToken());
        user.setPassword(stringTokenizer.nextToken());
        user.setAge(Integer.parseInt(stringTokenizer.nextToken()));
        return user;
    }

    @Override
    public String convertToString(Map map, Object obj) {
        System.out.println("tostring");
        User user = (User) obj;
        String string = user.getUsername() + user.getPassword() + user.getAge();
        return string;
    }

}

配置文件同上

如果你要配置全局的转换器那么你的配置文件要放在src下且命名为xwork-conversion.properties

键为转换的类型的全路径，值为转换器的转换器的路径

com.newtouch.entity.User=com.newtouch.struts2.TheStrutsConversion