前端echartsArray数据_echart data : proxy(array)

package com.gblfy.ws.client;

import com.alibaba.fastjson.JSON;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class StrCount {

    static List<String> keyList = new ArrayList<>();
    static List<String> valList = new ArrayList<>();

    public static void main(String[] args) {

        //指定字符串
        String keywords = "2021-08-22";
        //构造集合数据
        List<String> dataList = dataList();

        String jsonStr = echartsArray(dataList, keywords);
        System.out.println("封装后的数据为:" + jsonStr);
    }

    /**
     * 前端echartsArray数据
     *
     * @param dataList
     * @param keywords
     * @return
     */
    public static String echartsArray(List<String> dataList, String keywords) {

        for (int i = 0; i < 10; i++) {
            //字符串出现的次数
            int appearNum = findStrCount(dataList, keywords);
            System.out.println("keywords在集合中出现的次数为:" + appearNum);
            //key
            keyList.add(String.valueOf(i));
            valList.add(String.valueOf(appearNum));
        }

        Map<String, Object> map = new HashMap<>();
        map.put("keyList", keyList);
        map.put("valList", valList);

        return JSON.toJSONString(map);
    }

    /**
     * 根据指定字符串，查询出现的次数
     *
     * @param keyList
     * @param keywords
     * @return
     */
    public static int findStrCount(List<String> keyList, String keywords) {
        int count = 0;
        for (String keyVal : keyList) {
            String keyValdeal = keyVal.substring(0, 10);
            if (keyValdeal.equals(keywords)) {
                count++;
            }
        }
        return count;
    }

    /**
     * 构造list数据
     *
     * @return
     */
    public static List<String> dataList() {
        List<String> keyStrList = new ArrayList<>();
        for (int i = 0; i < 10; i++) {
            keyStrList.add("2021-08-0" + String.valueOf(i));
        }
        return keyStrList;
    }

}

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