package cn.dl.fanshe;import java.util.Map;import org.apache.commons.beanutils.BeanUtils;
import org.junit.Test;public class CommonTools {/** 该方法用来将map中的数据写入javabean中* */public  static <T> T beanUtil(Map map, Class<T> clazz){T bean;try {bean = clazz.newInstance();//实例化javabean类BeanUtils.populate(bean, map);//将map中的值写入bean中return bean;} catch (Exception e) {throw new RuntimeException(e);} }
}//测试类
package cn.dl.fanshe;
import java.util.HashMap;
import java.util.Map;import org.apache.commons.beanutils.BeanUtils;
import org.junit.Test;public class TestCommonTools {@Testpublic void fun() throws Exception{Class clazz = Class.forName("cn.dl.fanshe.User");//获取User类Map<String , String> map= new HashMap<String,String>();//创建mapmap.put("username", "张三");//map中的键名要与User类中的属性名一致map.put("password", "123456");CommonTools ct = new CommonTools();//创建javabean工具类System.out.println(ct.beanUtil(map, clazz));//调出工具类中的方法}}

//User类package cn.dl.fanshe;

public class User {    private String username;    private String password;    public User() {        super();    }    public String getUsername() {        return username;    }    public void setUsername(String username) {        this.username = username;    }    public String getPassword() {        return password;    }    public void setPassword(String password) {        this.password = password;    }    @Override    public String toString() {        return "User [username=" + username + ", password=" + password + "]";    }

}