java - 将数据写入字符串

Question

这可能很容易解决，但我现在坚持了一段时间。我有一个 while 循环，用于写入数据。我想将 while 循环中的数据写入字符串。

public void dumpPart(Part p) throws Exception {
    InputStream is = p.getInputStream();
    if (!(is instanceof BufferedInputStream)) {
        is = new BufferedInputStream(is);
    }
    int c;
    System.out.println("Message: ");
    while ((c = is.read()) != -1) {
        System.out.write(c);  //I want to write this data to a String.

    }
    sendmail.VerstuurEmail(mpMessage, kenmerk);
}

已解决:

public void dumpPart(Part p) throws Exception {
    InputStream is = p.getInputStream();
    if (!(is instanceof BufferedInputStream)) {
        is = new BufferedInputStream(is);
    }
    int c;
     final StringWriter sw = new StringWriter();
    System.out.println("Message: ");
    while ((c = is.read()) != -1) {
        sw.write(c);
    }
    mpMessage = sw.toString();;
    sendmail.VerstuurEmail(mpMessage, kenmerk);
}

感谢您的帮助。

Answer 1

您可以考虑一个 java.io.StringWriter(从 JDK 1.4+ 开始):

 System.out.println("Message: ");

 final StringWriter sw = new StringWriter();

 int c;
 while ((c = is.read()) != -1) {
    sw.write(c);
 }

 String data = sw.toString();