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  • JAVA HW2

    MODEL

    //yuec2 Yue Cheng
    package hw2;
    
    import java.io.File;
    import java.io.FileNotFoundException;
    import java.util.HashMap;
    import java.util.Scanner;
    
    import javafx.beans.property.StringProperty;
    import javafx.collections.FXCollections;
    import javafx.collections.ObservableMap;
    
    
    public class Model extends DataFiler{
        ObservableMap<StringProperty, Product> productsMap = FXCollections.observableHashMap();
        static ObservableMap<StringProperty, Nutrient> nutrientsMap = FXCollections.observableHashMap();
        Product[] products;
        Nutrient[] nutrients;
    
        public void readProducts(String productFile) {
            // TODO Auto-generated method stub
            //initialize two Scanner
            //Scanner fileScanner is used to count the number of lines in file
            Scanner fileScanner = null;
            //Scanner sc is used to read information into the products array
            Scanner sc =  null;
            //fileContent is used to store all the information for this array
            StringBuilder fileContent = new StringBuilder();
    
            try {
                File file = new File(productFile);
                fileScanner = new Scanner(file);
                sc = new Scanner(file);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
            int countOfLines = 0;
    
            //skip the title line
            fileScanner.nextLine();
            while (fileScanner.hasNextLine()) {
                //add all the information into the fileContent
                fileContent.append(fileScanner.nextLine());
                //get countOfLines by using fileScanner
                countOfLines++;
    
            }
            //initialize a Product array using the countOfLines as size
            products = new Product[countOfLines];
    
            //skip the title line
            sc.nextLine();
            for (int i = 0; i < countOfLines; i++) {
                //put every line's product information into a String array temp
                String[] temp = sc.nextLine().toString().split("","");
                //get information from the temp array and assign as each product's information
                products[i] = new Product();
                //StringProperty is not a string?
                products[i].ndbNumber.set(temp[0]+'"');
                products[i].productName.set(temp[1].trim());
                products[i].ingredients.set(temp[7].trim());
                products[i].manufacturer.set(temp[4].trim());
                productsMap.put(products[i].ndbNumber, products[i]);
            }
        }
    
        public void readNutrients(String nutrientFile) {
            //initialize 2 Scanner
            //Scanner fileScanner is used to count the number of lines in file
            Scanner fileScanner = null;
            //Scanner sc is used to read information into the nutrients array
            Scanner sc =  null;
            //StringBuilder contentOfUniqueNutrients is used to store information of the unique nutrients
            StringBuilder contentOfUniqueNutrients = new StringBuilder();
            //fileContent is used to store all the information for this array
            StringBuilder fileContent = new StringBuilder();
    
            try {
                File file = new File(nutrientFile);
                fileScanner = new Scanner(file);
                sc = new Scanner(file);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
            //skip the title line
            fileScanner.nextLine();
            //initialize the count numbers
            int countOfLines = 0;
            int numOfUniqueNutirents = 0;
    
            while (fileScanner.hasNextLine()) {
                //get one line's information into the String cur
                String cur = fileScanner.nextLine();
                //extract the nutrients's id to identify each unique nutrient
                String id = cur.split("","")[1];
                //add all the information into the fileContent
                fileContent.append(cur);
                //get countOfLines by using fileScanner
                countOfLines++;
    
                if (!contentOfUniqueNutrients.toString().contains(id)) {
                    //if the id is unique, append this nutrient's information
                    contentOfUniqueNutrients.append(cur);
                    //split each line by 
    
                    contentOfUniqueNutrients.append("
    ");
                    //count the number for unique nutrients
                    numOfUniqueNutirents++;
                }
            }
    
            //skip the title line
            sc.nextLine();
            //initialize an array using the numOfUniqueNutirents as size
            nutrients = new Nutrient[numOfUniqueNutirents];
            //store each line's information into a string array
            String[] lines = contentOfUniqueNutrients.toString().split("
    ", -1);
            for (int i = 0; i < numOfUniqueNutirents; i++) {
                //split each array's elements
                String[] temp1 = lines[i].toString().split("",", -1);
                //assign each element's information
                nutrients[i] = new Nutrient();
                nutrients[i].nutrientCode.set(temp1[1].replaceAll(""", "").trim());
                nutrients[i].nutrientName.set(temp1[2].replaceAll(""", "").trim());
                nutrients[i].nutrientUom.set(temp1[5].replaceAll(""", "").trim());
                nutrientsMap.put(nutrients[i].nutrientCode, nutrients[i]);
            }
        }
    
        public void readServingSizes(String servingSizeFile) {
            //initialize two Scanner
            //Scanner fileScanner is used to count the number of lines in file
            Scanner fileScanner = null;
            //Scanner sc is used to read information into the products array
            Scanner sc =  null;
            //add all the information into the fileContent
            StringBuilder fileContent = new StringBuilder();
    
            try {
                File file = new File(servingSizeFile);
                fileScanner = new Scanner(file);
                sc = new Scanner(file);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
    
            int countOfLines = 0;
            //get countOfLines
            fileScanner.nextLine();
            while (fileScanner.hasNextLine()) {
                fileContent.append(fileScanner.nextLine());
                countOfLines++;
            }
    
            //count the number of words of each line of serving size file
            int lengthOfServingSizeFile = sc.nextLine().toString().split("","").length;
            //initialize an array using the lengthOfServingSizeFile as size 
            String[] temp = new String[lengthOfServingSizeFile];
    
            for (int i = 0; i < countOfLines; i++) {
                //split each array's elements
                temp = sc.nextLine().toString().split("","");
                //assign each element's information
                products[i] = new Product();
                products[i].servingSize.set(Float.parseFloat(temp[1].trim()));
                products[i].servingUom.set(temp[2].trim());
                products[i].householdSize.set(Float.parseFloat(temp[3].trim()));
                products[i].householdUom.set(temp[4].trim());
                productsMap.put(products[i].ndbNumber, products[i]);
            }
        }
        
        @Override
        public void writeFile(String filename) {
            // TODO Auto-generated method stub
            
        }
    
        @Override
        public boolean readFile(String filename) {
            // TODO Auto-generated method stub
            //how to judge the file?
            CSVFiler cf = new CSVFiler();
            XMLFiler xf = new XMLFiler();
            if (filename.contains("csv")) cf.readFile(filename);
            if (filename.contains("xml")) xf.readFile(filename);
            return false;
        }
    
    }
    View Code

    CSVFiler

    package hw2;
    
    import java.io.File;
    import java.io.FileNotFoundException;
    import java.util.Scanner;
    
    public class CSVFiler extends DataFiler{
    
        @Override
        public void writeFile(String filename) {
            // TODO Auto-generated method stub
            //no code in this version
        }
    
        @Override
        public boolean readFile(String filename) {
            // TODO Auto-generated method stub
            Scanner sc =  null;
            //add all the information into the fileContent
            StringBuilder fileContent = new StringBuilder();
    
            try {
                File file = new File("Profile1.csv");
                sc = new Scanner(file);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
            fileContent.append(sc.nextLine());
    
            String[] temp = fileContent.toString().split("","");
            //Female(float age, float weight, float height, float physicalActivityLevel, String ingredientsToAvoid) {
            Female female = new Female(Float.valueOf(temp[1]), Float.valueOf(temp[2]),
                    Float.valueOf(temp[3]), Float.valueOf(temp[4]),temp[5]);
            Person p = female;
            //how to judge correct or not?
            
            return false;
        }
    
    }
    View Code

     最后一段改的CSVFiler

    public
        boolean readFile(String filename) {
            CSVFormat csvFormat = CSVFormat.DEFAULT.withFirstRecordAsHeader(); try {
            CSVParser csvParser = CSVParser.parse(new FileReader(filename), csvFormat); for (CSVRecord csvRecord : csvParser) {
            Person person = new Person(csvRecord.get(1), csvRecord.get(2), csvRecord.get(3), csvRecord.get(4), csvRecord.get(5));
            } }
            catch (FileNotFoundException e1) { e1.printStackTrace(); return false;}
            catch (IOException e1) { e1.printStackTrace(); return false;} return true;}
    View Code
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  • 原文地址:https://www.cnblogs.com/immiao0319/p/9868479.html
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