Java 将JTable内容保存到文本文件并读取

我的jTable有问题。我在网上读了很多东西，但我仍然不能解决我的问题。当我单击jButton1时，调用此过程（将jtable保存到文本文件）

我希望，当程序运行时，它从上面的路径加载这个文件，因此我想使用

BufferedReader

方法。顺便说一下，我不知道怎么做。你有什么想法吗？：）在这里你可以看到我的代码，我只做了它的一部分，因为我不知道如何继续

public void LoadMyTable()throws Exception
{
  BufferedReader br = new BufferedReader(new FileReader("C:\\addressbook\\databese.txt"));
    try {
        StringBuilder sb = new StringBuilder();
        String line = br.readLine();
   // code that loads the datas in my jTable
} finally {
    br.close();
}

---

你需要这样的东西

              BufferedReader br = null;
            try {
                br = new BufferedReader(new FileReader(path));
                String line = null;


            while ((line = br.readLine()) != null) {
                //here you have to load your table 

            }

        } catch (IOException e) {
            //manage your exceptions
        } finally {
            try {
                if (br != null){
                               br.close(); // close open streams resources
                            }
            } catch (IOException ex) {
                //manage your exceptions
            }
        }

readLine（）：读取一行文本。一行被认为是由换行符（'\n'）、回车符（'\r'）或紧接着换行符的回车符中的任意一个终止的

---

可以帮助您

这是我用来保持列有序的方法。这有点混乱和低效，但字符常量是20

BufferedWriter bfw = new BufferedWriter(new FileWriter(
                    "Data.txt"));

            for (int i = 0; i < table.getColumnCount(); i++) {//first loop is used for titles of each column

                String name = String.valueOf(table.getColumnName(i));

                if (name.length() > 20) {//20 (characters long) is the constant I chose to make each value
                    name = name.substring(0, 20);
                } else if (name.length() == 20) {

                } else {
                    String spaces = "";
                    int diff = 20 - name.length();
                    while (diff > 0) {
                        spaces = spaces + " ";
                        diff--;
                    }
                    name = name.concat(spaces);
                }

                bfw.write(name);
                bfw.write("\t");
            }

            for (int i = 0; i < table.getRowCount(); i++) {//for all the data in the Jtable excluding column headers
                bfw.newLine();
                for (int j = 0; j < table.getColumnCount(); j++) {

                    if (table.getValueAt(i, j) == null) {
                        bfw.write("                    ");
                        bfw.write("\t");
                    }

                    else {

                        String name = String.valueOf((table
                                .getValueAt(i, j)));

                        if (name.contains("(")) {
                            name = name.substring(0, name.indexOf("("));
                        }

                        if (name.length() > 20) {
                            name = name.substring(0, 20);
                        } else if (name.length() == 20) {

                        } else {
                            String spaces = "";
                            int diff = 20 - name.length();
                            while (diff > 0) {
                                spaces = spaces + " ";
                                diff--;
                            }
                            name = name.concat(spaces);
                        }

                        bfw.write(name);
                        bfw.write("\t");
                    }
                }
            }

BufferedWriter bfw=new BufferedWriter（new FileWriter(
"Data.txt),；
对于（int i=0；i20）{//20（字符长）是我选择用来生成每个值的常量
name=name.substring（0,20）；
}else if（name.length（）==20）{
}否则{
字符串空格=”；
int diff=20-name.length（）；
而（差异>0）{
空格=空格+“”；
差异--；
}
name=name.concat（空格）；
}
写下（姓名）；
bfw.写入（“\t”）；
}
for（int i=0；i20）{
name=name.substring（0,20）；
}else if（name.length（）==20）{
}否则{
字符串空格=”；
int diff=20-name.length（）；
而（差异>0）{
空格=空格+“”；
差异--；
}
name=name.concat（空格）；
}
写下（姓名）；
bfw.写入（“\t”）；
}
}
}

btw您应该将bufferedreader的创建放在try catch中block@nachokk是：）但在此之前，我需要知道如何在while循环中加载数据，“line”是我包含每行数据的行吗？：）@EmmaRossignoli yep文本中的行噢，非常感谢！：）我想问你最后一件事。我想用这个-->“addRow（newobject[]{textlines}；”来把每一行放在我的表中。“我怎样才能用正确的方式来做呢？”@EmmaRossignoli我在答案中加了一个链接，可能会帮你再次感谢你，非常好的家伙：）

              BufferedReader br = null;
            try {
                br = new BufferedReader(new FileReader(path));
                String line = null;


            while ((line = br.readLine()) != null) {
                //here you have to load your table 

            }

        } catch (IOException e) {
            //manage your exceptions
        } finally {
            try {
                if (br != null){
                               br.close(); // close open streams resources
                            }
            } catch (IOException ex) {
                //manage your exceptions
            }
        }

BufferedWriter bfw = new BufferedWriter(new FileWriter(
                    "Data.txt"));

            for (int i = 0; i < table.getColumnCount(); i++) {//first loop is used for titles of each column

                String name = String.valueOf(table.getColumnName(i));

                if (name.length() > 20) {//20 (characters long) is the constant I chose to make each value
                    name = name.substring(0, 20);
                } else if (name.length() == 20) {

                } else {
                    String spaces = "";
                    int diff = 20 - name.length();
                    while (diff > 0) {
                        spaces = spaces + " ";
                        diff--;
                    }
                    name = name.concat(spaces);
                }

                bfw.write(name);
                bfw.write("\t");
            }

            for (int i = 0; i < table.getRowCount(); i++) {//for all the data in the Jtable excluding column headers
                bfw.newLine();
                for (int j = 0; j < table.getColumnCount(); j++) {

                    if (table.getValueAt(i, j) == null) {
                        bfw.write("                    ");
                        bfw.write("\t");
                    }

                    else {

                        String name = String.valueOf((table
                                .getValueAt(i, j)));

                        if (name.contains("(")) {
                            name = name.substring(0, name.indexOf("("));
                        }

                        if (name.length() > 20) {
                            name = name.substring(0, 20);
                        } else if (name.length() == 20) {

                        } else {
                            String spaces = "";
                            int diff = 20 - name.length();
                            while (diff > 0) {
                                spaces = spaces + " ";
                                diff--;
                            }
                            name = name.concat(spaces);
                        }

                        bfw.write(name);
                        bfw.write("\t");
                    }
                }
            }