upangka

package com.vpu.mp.service.pojo.shop.member.ucard;

import javax.validation.constraints.NotNull;

import lombok.Builder;
import lombok.Data;

@Data
@Builder
public class ActivateCardParam {

upangka

package org.caucoder.mylist;


import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;

/**

upangka

package org.caucoder.mylist;

import java.util.*;
import java.util.stream.Collectors;

/**
 * list 转set并操作
 */
public class GetSpecificField {
    public static void main(String[] args) {

upangka

package org.caucoder.mylist;

public class Entity {
    private String fname;
    private String lname;

    public Entity(String fname, String lname) {
        this.fname = fname;
        this.lname = lname;
    }

upangka

package org.caucoder.mylist;

public class Entity {
    private String fname;
    private String lname;

    public Entity(String fname, String lname) {
        this.fname = fname;
        this.lname = lname;
    }

upangka

将 “【1，2，3】” 转化为List [1,2,3]

public static <T> T json2Object(String json, TypeReference<T> reference, boolean failOnUnknownProperties) {
        if (StringUtils.isBlank(json)) {
            return null;
        }
        if (failOnUnknownProperties) {
            MAPPER.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
 }

upangka

1. 重构之前的代码

public void setScorePeriod(String value){
  set(SCORE_PERIOD, value);
}
public String getScorePeriod(){
  return get(SCORE_PERIOD);
}

代码调用

upangka

// 删除entry,根据key 满足什么条件
map.entrySet().removeIf(e->e.getKey boolean condition);
// 删除entry,根据value 是否为null
map.values().removeIf(Objects::isNull);

upangka

public class CardUpgradeDao extends ShopBaseService {
  // 重构之前得代码
	public void insert(Integer userId,MemberCardRecord oldCard, MemberCardRecord newCard) {
		CardUpgradeRecord re = db().newRecord(CARD_UPGRADE);
		String operation = "Admin option";
		re.setUserId(userId);
		re.setOldCardId(oldCard.getId());
		re.setNewCardId(newCard.getId());
		re.setOldGrade(oldCard.getGrade());
		re.setNewGrade(newCard.getGrade());

upangka

package org.caucoder.controller;

import org.caucoder.dao.StudentDataUtil;
import org.caucoder.pojo.Student;
import sun.misc.Request;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;