字段必须和传参时一致,否则为null,
使用AIT+INS可以快速生成,SET GET方法
            
            
              java
              
              
            
          
          public class User {
	//字段必须和传参时一致,否则为null
    private String user;
    private String password;
    public String getUser() {
        return user;
    }
    public void setUser(String user) {
        this.user = user;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    @Override
    public String toString() {
        return "User{" +
                "user='" + user + '\'' +
                ", password='" + password + '\'' +
                '}';
    }
}复杂嵌套参数
两个类 现将两个类合并对象,返回前端,把Update封装到User

User
            
            
              java
              
              
            
          
          public class User {
    private String user;
    private String password;
    private Update up;
    public Update getUp() {
        return up;
    }
    public void setUp(Update up) {
        this.up = up;
    }
    public String getUser() {
        return user;
    }
    public void setUser(String user) {
        this.user = user;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    @Override
    public String toString() {
        return "User{" +
                "user='" + user + '\'' +
                ", password='" + password + '\'' +
                ", up=" + up +
                '}';
    }
}Update
            
            
              java
              
              
            
          
          public class Update {
    private  String time;
    private  int num;
    public String getTime() {
        return time;
    }
    public void setTime(String time) {
        this.time = time;
    }
    public int getNum() {
        return num;
    }
    public void setNum(int num) {
        this.num = num;
    }
    @Override
    public String toString() {
        return "Update{" +
                "time='" + time + '\'' +
                ", num=" + num +
                '}';
    }
}前端给Update time 和 num 传值
