package com.algo.util;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import java.io.*;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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/**
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* JSON文件读取工具类
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* 用于读取环境配置和路径映射文件
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*/
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public class JsonUtils {
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/**
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* 读取JSON文件内容
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*
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* @param filePath 文件路径
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* @return JSON字符串内容
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* @throws IOException 文件读取异常
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*/
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public static String readJsonFile(String filePath) throws IOException {
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StringBuilder content = new StringBuilder();
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try (BufferedReader reader = new BufferedReader(new FileReader(filePath))) {
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String line;
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while ((line = reader.readLine()) != null) {
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content.append(line).append("\n");
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}
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}
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return content.toString();
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}
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/**
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* 解析路径映射JSON内容
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* 正确解析path_mapping.json的实际格式：{"path_id_to_coordinates": {...}}
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*
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* @param jsonContent JSON内容
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* @return 路径映射Map，key为路径编号，value为坐标信息
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*/
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public static Map<String, Map<String, Integer>> parsePathMapping(String jsonContent) {
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Map<String, Map<String, Integer>> pathMapping = new HashMap<>();
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try {
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// 找到path_id_to_coordinates部分
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String pathIdSection = extractJsonSection(jsonContent, "path_id_to_coordinates");
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if (pathIdSection == null) {
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System.err.println("未找到path_id_to_coordinates部分");
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return pathMapping;
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}
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String[] lines = pathIdSection.split("\n");
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String currentKey = null;
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for (String line : lines) {
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line = line.trim();
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// 查找路径ID
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if (line.startsWith("\"") && line.contains("\":[")) {
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int endIndex = line.indexOf("\":[");
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currentKey = line.substring(1, endIndex);
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pathMapping.put(currentKey, new HashMap<>());
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}
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// 查找坐标信息
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if (currentKey != null && line.contains("\"x\":")) {
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String xStr = line.substring(line.indexOf("\"x\":") + 4);
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xStr = xStr.substring(0, xStr.indexOf(",")).trim();
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try {
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int x = Integer.parseInt(xStr);
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pathMapping.get(currentKey).put("x", x);
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} catch (NumberFormatException e) {
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// 忽略解析错误
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}
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}
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if (currentKey != null && line.contains("\"y\":")) {
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String yStr = line.substring(line.indexOf("\"y\":") + 4);
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if (yStr.contains(",")) {
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yStr = yStr.substring(0, yStr.indexOf(",")).trim();
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} else if (yStr.contains("}")) {
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yStr = yStr.substring(0, yStr.indexOf("}")).trim();
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}
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try {
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int y = Integer.parseInt(yStr);
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pathMapping.get(currentKey).put("y", y);
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} catch (NumberFormatException e) {
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// 忽略解析错误
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}
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}
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}
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System.out.println("成功解析路径映射，包含 " + pathMapping.size() + " 个路径点");
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} catch (Exception e) {
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System.err.println("解析路径映射JSON时发生错误: " + e.getMessage());
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}
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return pathMapping;
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}
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/**
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* 加载和解析路径映射文件
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* 正确解析path_mapping.json的实际格式：{"path_id_to_coordinates": {...}}
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*
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* @param filePath 文件地址
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* @return 路径映射Map，key为路径编号，value为坐标信息
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*/
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public static Map<String, Map<String, Integer>> loadPathMapping(String filePath) {
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// 转换为目标结构 Map<String, Map<String, Integer>>
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Map<String, Map<String, Integer>> pathMapping = new HashMap<>();
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ObjectMapper objectMapper = new ObjectMapper();
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try {
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// 先解析为顶层Map<String, Object>
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Map<String, Object> topLevelMap = objectMapper.readValue(
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new File(filePath),
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Map.class
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);
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if (!topLevelMap.containsKey("path_id_to_coordinates")) {
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System.err.println("未找到path_id_to_coordinates部分");
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return pathMapping;
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}
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// 处理 path_id_to_coordinates（将坐标列表转换为第一个坐标的path_id映射）
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Map<String, Object> pathIdCoords = (Map<String, Object>) topLevelMap.get("path_id_to_coordinates");
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for (Map.Entry<String, Object> entry : pathIdCoords.entrySet()) {
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// 保存方式: 路径ID:{"x": , "y":}
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String pathId = entry.getKey();
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Object coordsObj = entry.getValue();
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if (coordsObj instanceof List) {
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List<?> coordsList = (List<?>) coordsObj;
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if (!coordsList.isEmpty()) {
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Map<?, ?> coordMap = (Map<?, ?>) coordsList.get(0);
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int x = ((Number) coordMap.get("x")).intValue();
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int y = ((Number) coordMap.get("y")).intValue();
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Map<String, Integer> pointMap = new HashMap<>();
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pointMap.put("x", x);
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pointMap.put("y", y);
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pathMapping.put(pathId, pointMap);
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}
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}
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}
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System.out.println("成功解析路径映射，包含 " + pathMapping.size() + " 个路径点");
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} catch (FileNotFoundException e) {
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System.err.println("路径映射文件不存在: " + e.getMessage());
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} catch (IOException e) {
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System.err.println("路径映射文件读取错误: " + e.getMessage());
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} catch (Exception e) {
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System.err.println("加载路径映射文件失败: " + e.getMessage());
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}
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return pathMapping;
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}
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/**
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* 解析环境配置JSON内容
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* 解析environment.json中的stations信息
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*
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* @param jsonContent JSON内容
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* @return 环境配置Map
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*/
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public static Map<String, Object> parseEnvironmentConfig(String jsonContent) {
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Map<String, Object> config = new HashMap<>();
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try {
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// 解析width
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if (jsonContent.contains("\"width\":")) {
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String widthStr = jsonContent.substring(jsonContent.indexOf("\"width\":") + 8);
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widthStr = widthStr.substring(0, widthStr.indexOf(",")).trim();
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try {
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config.put("width", Integer.parseInt(widthStr));
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} catch (NumberFormatException e) {
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config.put("width", 78);
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}
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}
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// 解析height
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if (jsonContent.contains("\"height\":")) {
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String heightStr = jsonContent.substring(jsonContent.indexOf("\"height\":") + 9);
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heightStr = heightStr.substring(0, heightStr.indexOf(",")).trim();
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try {
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config.put("height", Integer.parseInt(heightStr));
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} catch (NumberFormatException e) {
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config.put("height", 50);
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}
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}
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// 解析stations信息
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Map<String, Map<String, Object>> stations = parseStations(jsonContent);
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config.put("stations", stations);
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config.put("stationCount", stations.size());
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System.out.println("成功解析环境配置，包含 " + stations.size() + " 个工作站");
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} catch (Exception e) {
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System.err.println("解析环境配置JSON时发生错误: " + e.getMessage());
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}
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return config;
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}
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/**
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* 加载和解析环境配置文件
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* 解析environment.json中的stations信息
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*
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* @param filePath 文件地址
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* @return 环境配置Map
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*/
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public static Map<String, Object> loadEnvironment(String filePath) {
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// 转换为目标结构 Map<String, Object>
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Map<String, Object> environmentMap = new HashMap<>();
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ObjectMapper objectMapper = new ObjectMapper();
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try {
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// 先解析为顶层Map<String, Object>
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Map<String, Object> topLevelMap = objectMapper.readValue(
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new File(filePath),
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Map.class
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);
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// 解析width
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if (topLevelMap.containsKey("width")) {
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environmentMap.put("width", Integer.parseInt(topLevelMap.get("width").toString()));
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} else {
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environmentMap.put("width", 78);
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}
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// 解析height
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if (topLevelMap.containsKey("width")) {
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environmentMap.put("height", Integer.parseInt(topLevelMap.get("height").toString()));
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} else {
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environmentMap.put("height", 50);
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}
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// 解析stations信息
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if (topLevelMap.containsKey("stations")) {
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Map<String, Map<String, Object>> stations = new HashMap<>();
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Map<String, Object> stationMap = (Map<String, Object>) topLevelMap.get("stations");
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for (Map.Entry<String, Object> stationEntry : stationMap.entrySet()) {
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// 工作站ID
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String pathId = stationEntry.getKey();
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Map<String, Object> stationInfo = (Map<String, Object>) stationEntry.getValue();
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Map<String, Object> map = new HashMap<>();
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// 解析capacity
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if (stationInfo.containsKey("capacity")) {
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map.put("capacity", Integer.parseInt(stationInfo.get("capacity").toString()));
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}
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// 解析load_position和unload_position
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if (stationInfo.containsKey("load_position")) {
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List<Integer> loadPos = (List<Integer>) stationInfo.get("load_position");
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map.put("load_position", loadPos);
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}
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if (stationInfo.containsKey("unload_position")) {
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List<Integer> unloadPos = (List<Integer>) stationInfo.get("unload_position");
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map.put("unload_position", unloadPos);
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}
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stations.put(pathId, map);
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}
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environmentMap.put("stations", stations);
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environmentMap.put("stationCount", stations.size());
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System.out.println("成功解析环境配置，包含 " + stations.size() + " 个工作站");
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}
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} catch (FileNotFoundException e) {
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System.err.println("环境配置文件不存在: " + e.getMessage());
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} catch (IOException e) {
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System.err.println("环境配置文件读取错误: " + e.getMessage());
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} catch (Exception e) {
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System.err.println("加载环境配置文件失败: " + e.getMessage());
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}
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return environmentMap;
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}
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/**
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* 解析stations信息
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*
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* @param jsonContent JSON内容
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* @return stations Map
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*/
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private static Map<String, Map<String, Object>> parseStations(String jsonContent) {
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Map<String, Map<String, Object>> stations = new HashMap<>();
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try {
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String stationsSection = extractJsonSection(jsonContent, "stations");
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if (stationsSection == null) {
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return stations;
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}
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String[] lines = stationsSection.split("\n");
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String currentStation = null;
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for (String line : lines) {
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line = line.trim();
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// 查找工作站ID
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if (line.startsWith("\"") && line.contains("\":{")) {
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int endIndex = line.indexOf("\":{");
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currentStation = line.substring(1, endIndex);
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stations.put(currentStation, new HashMap<>());
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}
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// 解析capacity
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if (currentStation != null && line.contains("\"capacity\":")) {
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String capacityStr = line.substring(line.indexOf("\"capacity\":") + 11);
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capacityStr = capacityStr.substring(0, capacityStr.indexOf(",")).trim();
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try {
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int capacity = Integer.parseInt(capacityStr);
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stations.get(currentStation).put("capacity", capacity);
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} catch (NumberFormatException e) {
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// 忽略解析错误
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}
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}
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// 解析load_position和unload_position
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if (currentStation != null && line.contains("\"load_position\":")) {
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List<Integer> loadPos = parsePosition(stationsSection, currentStation, "load_position");
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if (loadPos != null) {
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stations.get(currentStation).put("load_position", loadPos);
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}
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}
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if (currentStation != null && line.contains("\"unload_position\":")) {
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List<Integer> unloadPos = parsePosition(stationsSection, currentStation, "unload_position");
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if (unloadPos != null) {
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stations.get(currentStation).put("unload_position", unloadPos);
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}
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}
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}
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} catch (Exception e) {
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System.err.println("解析stations信息时发生错误: " + e.getMessage());
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}
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return stations;
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}
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/**
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* 解析位置信息
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*
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* @param content JSON内容
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* @param stationId 工作站ID
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* @param positionType 位置类型（load_position或unload_position）
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* @return 位置坐标列表
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*/
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private static List<Integer> parsePosition(String content, String stationId, String positionType) {
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try {
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String stationSection = content.substring(content.indexOf("\"" + stationId + "\":{"));
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String positionSection = stationSection.substring(stationSection.indexOf("\"" + positionType + "\":"));
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String[] lines = positionSection.split("\n");
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List<Integer> position = new ArrayList<>();
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for (String line : lines) {
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line = line.trim();
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if (line.matches("\\d+,?")) {
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String numStr = line.replaceAll("[,\\s]", "");
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try {
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position.add(Integer.parseInt(numStr));
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} catch (NumberFormatException e) {
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// 忽略解析错误
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}
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}
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if (line.contains("]")) {
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break;
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}
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}
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return position.size() == 2 ? position : null;
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} catch (Exception e) {
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return null;
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}
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}
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/**
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* 提取JSON中的特定部分
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*
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* @param jsonContent JSON内容
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* @param sectionName 部分名称
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* @return 提取的部分内容
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*/
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private static String extractJsonSection(String jsonContent, String sectionName) {
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try {
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String startPattern = "\"" + sectionName + "\": {";
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int startIndex = jsonContent.indexOf(startPattern);
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if (startIndex == -1) {
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return null;
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}
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int braceCount = 0;
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int currentIndex = startIndex + startPattern.length() - 1;
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while (currentIndex < jsonContent.length()) {
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char ch = jsonContent.charAt(currentIndex);
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if (ch == '{') {
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braceCount++;
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} else if (ch == '}') {
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braceCount--;
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if (braceCount == 0) {
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break;
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}
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}
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currentIndex++;
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}
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return jsonContent.substring(startIndex + startPattern.length() - 1, currentIndex + 1);
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} catch (Exception e) {
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return null;
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}
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}
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/**
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* 获取路径点的坐标
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*
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* @param pathId 路径点ID
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* @param pathMapping 路径映射
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* @return 坐标数组 [x, y]，如果未找到返回null
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*/
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public static int[] getCoordinate(String pathId, Map<String, Map<String, Integer>> pathMapping) {
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Map<String, Integer> coordMap = pathMapping.get(pathId);
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if (coordMap != null && coordMap.containsKey("x") && coordMap.containsKey("y")) {
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return new int[]{coordMap.get("x"), coordMap.get("y")};
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}
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return null;
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}
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/**
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* 获取工作站信息
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*
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* @param stationId 工作站ID
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* @param environmentConfig 环境配置
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* @return 工作站信息Map
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*/
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@SuppressWarnings("unchecked")
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public static Map<String, Object> getStationInfo(String stationId, Map<String, Object> environmentConfig) {
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Map<String, Map<String, Object>> stations =
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(Map<String, Map<String, Object>>) environmentConfig.get("stations");
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if (stations != null) {
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return stations.get(stationId);
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}
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return null;
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}
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/**
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* 判断位置是否为工作站
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*
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* @param position 位置字符串
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* @param environmentConfig 环境配置
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* @return 是否为工作站
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*/
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public static boolean isStation(String position, Map<String, Object> environmentConfig) {
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return getStationInfo(position, environmentConfig) != null;
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}
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/**
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* 计算两点之间的曼哈顿距离
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*
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* @param coord1 坐标1 [x, y]
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* @param coord2 坐标2 [x, y]
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* @return 曼哈顿距离
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*/
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public static double calculateManhattanDistance(int[] coord1, int[] coord2) {
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if (coord1 == null || coord2 == null || coord1.length != 2 || coord2.length != 2) {
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return Double.MAX_VALUE;
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}
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return Math.abs(coord1[0] - coord2[0]) + Math.abs(coord1[1] - coord2[1]);
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}
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/**
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* 计算两点之间的欧几里得距离
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*
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* @param coord1 坐标1 [x, y]
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* @param coord2 坐标2 [x, y]
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* @return 欧几里得距离
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*/
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public static double calculateEuclideanDistance(int[] coord1, int[] coord2) {
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if (coord1 == null || coord2 == null || coord1.length != 2 || coord2.length != 2) {
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return Double.MAX_VALUE;
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}
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int dx = coord1[0] - coord2[0];
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int dy = coord1[1] - coord2[1];
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return Math.sqrt(dx * dx + dy * dy);
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}
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}
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