如何將文本顯示到* .jsp中的textArea？

Question

我將servlet.java中的request.setAttribute("path", textpath);的（* .txt）路徑傳送給* .jsp。並且* .txt在web服務器地址中。如何將內容顯示到textArea？謝謝。

Answer 1

既然你在談論JSP和閱讀文件，我推斷我們正在談論Java。你想將文件的內容讀入字符串中，對嗎？

這是一個Java方法。

/** 
* Return the contents of file as a String. 
* 
* @param file 
*   The path to the file to be read 
* @return The contents of file as a String, or null if the file couldn't be 
*   read. 
*/ 
private static String getFileContents(String file) { 

    /* 
    * Yes. This really is the simplest way I could find to do this in Java. 
    */ 

    byte[] bytes; 
    FileInputStream stream; 
    try { 
    stream = new FileInputStream(file); 
    } catch (FileNotFoundException e) { 
    System.out.println("File not found: `" + file + "`"); 
    e.printStackTrace(); 
    return null; 
    } 
    try { 
    bytes = new byte[stream.available()]; 
    stream.read(bytes); 
    stream.close(); 
    } catch (IOException e) { 
    System.out.println("IO Exception while getting contents of `" 
     + file + "`"); 
    e.printStackTrace(); 
    return null; 
    } 
    return new String(bytes); 
} 

所以你可以這樣稱呼它，就像String fileContents = getFileContents(textPath);。

然後，在您的頁面上，您會說，<textarea><%= fileContents %></textarea>。