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java - 从 .csv 文件扩展缩写

问题描述

所以我有这个任务要做，我需要将消息中的文本缩写扩展为 .csv 文件中的完整形式，我将该文件加载到 HashMap 中，键作为缩写，值作为完整形式。有一个循环遍历键和 if 语句，如果找到的话，它会将缩写替换为完整形式。我有点想通了，它可以正常工作，但我想将这个更改的字符串（扩展缩写）发送到 if 语句之外的其他地方，以将完整的消息保存到文件中。我知道这个字符串只存在于这个 if 语句中，但也许还有另一种方法？或者也许我做错了什么？我对 Java 有点生疏了，所以也许有一个我不知道的简单解释。这是我的代码：

public class AbbreviationExpander {

    static void AbrExpander(String messageBody) {

        //read the .csv file

        String csvFile = "textwords.csv";
        String line = "";
        String cvsSplitBy = ",";
        String bodyOut = messageBody;

        HashMap<String, String> list = new HashMap<>();


        try (BufferedReader br = new BufferedReader(new FileReader(csvFile))) {

            while ((line = br.readLine()) != null) {


                String[] abbreviatonFile = line.split(cvsSplitBy);

                //load the read data into the hashmap

                list.put(abbreviatonFile[0], abbreviatonFile[1]);


            }
            for (String key : list.keySet()) {


                //if any abbreviations found then replace them with expanded version

                if (messageBody.contains(key)) {

                    bodyOut = bodyOut.replace(key, key + "<" + list.get(key).toLowerCase() + ">");


                    try {
                        File file = new File("SMS message" + System.currentTimeMillis() + ".txt");
                        FileWriter myWriter = new FileWriter(file);
                        myWriter.write(bodyOut);
                        myWriter.close();
                    } catch (IOException e) {
                        System.out.println("An error occurred.");
                        e.printStackTrace();
                    }


                }


            }


        } catch (IOException f) {
            f.printStackTrace();
        }


    }


}

标签： javaloopscsvif-statementabbreviation

解决方案

不确定我是否理解你的问题。但我认为您应该将代码中的不同步骤分开。

我的意思是你try-catch写输出的块应该在 read 之外for-loop和之外try-catch。你for-loop应该在你的阅读之外try-catch。

public class AbbreviationExpander {

    static void AbrExpander(String messageBody) {

        String csvFile = "textwords.csv";
        String line = "";
        String cvsSplitBy = ",";
        String bodyOut = messageBody;
        HashMap<String, String> list = new HashMap<>();

        //read the .csv file
        try (BufferedReader br = new BufferedReader(new FileReader(csvFile))) {
            while ((line = br.readLine()) != null) {
                String[] abbreviatonFile = line.split(cvsSplitBy);

                //load the read data into the hashmap
                list.put(abbreviatonFile[0], abbreviatonFile[1]);
            }
        } catch (IOException e) {
            System.out.println("An error occurred.");
            e.printStackTrace();
        }

        //if any abbreviations found then replace them with expanded version
        for (String key : list.keySet()) {
            if (messageBody.contains(key)) {
                 bodyOut = bodyOut.replace(key, key + "<" + list.get(key).toLowerCase() + ">");
            }
        }

        //output the result in your file
        try {
            File file = new File("SMS message" + System.currentTimeMillis() + ".txt");
            FileWriter myWriter = new FileWriter(file);
            myWriter.write(bodyOut);
            myWriter.close();
        } catch (IOException e) {
            System.out.println("An error occurred.");
            e.printStackTrace();
        }
    }
}

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