BeanUtils.populate的作用

public class User {

private String uid;
private String username;
private String password;
private String address;
private String status;
public String getUid() {
return uid;
}
public void setUid(String uid) {
this.uid = uid;
}

省略更多getXXX/setXXX...........

//获取表单提交的数据，把数据封装到javabean中
User user = new User();
BeanUtils.populate(user, req.getParameterMap());