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读取表单文件并将其内容发送到GWT中的clinet

发布于 2024-11-03 10:21:04 字数 92 浏览 1 评论 0原文

我需要在服务器端读取表单 TXT 文件并将其内容发送到客户端以在标签或任何东西中打印，我需要知道我将 TXT 文件放在服务器包上还是在 WAR 中，以及如何编码吗？？谢谢

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独行侠 2024-11-10 10:21:04

文件放在哪里并不重要。它必须位于服务器上，并且 php 脚本必须能够打开该文件。您可以使用 php 按以下方式准备文本文件。
然后使用 GWT 向该文件发出 http 请求。

读取文件：

<?php
// get contents of a file into a string
$filename = "/usr/local/something.txt";
$handle = fopen($filename, "r");
$contents = fread($handle, filesize($filename));
fclose($handle);
echo $contents;
?>

发出 http 请求：

public class GetExample implements EntryPoint {
  public static final int STATUS_CODE_OK = 200;

  public static void doGet(String url) {
    RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, url);

    try {
      Request response = builder.sendRequest(null, new RequestCallback() {
        public void onError(Request request, Throwable exception) {
          // Code omitted for clarity
        }

        public void onResponseReceived(Request request, Response response) {
          String content = response.getText();
        }
      });
    } catch (RequestException e) {
      // Code omitted for clarity
    }
  }

  public void onModuleLoad() {
    doGet("/");
  }
}

It doens't really matter where you place the file. It must be on the server and a php script must be able to open the file. You can ready the text file the following way with php.
Then make a http request with GWT to that file.

Read the file:

<?php
// get contents of a file into a string
$filename = "/usr/local/something.txt";
$handle = fopen($filename, "r");
$contents = fread($handle, filesize($filename));
fclose($handle);
echo $contents;
?>

Make http request:

public class GetExample implements EntryPoint {
  public static final int STATUS_CODE_OK = 200;

  public static void doGet(String url) {
    RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, url);

    try {
      Request response = builder.sendRequest(null, new RequestCallback() {
        public void onError(Request request, Throwable exception) {
          // Code omitted for clarity
        }

        public void onResponseReceived(Request request, Response response) {
          String content = response.getText();
        }
      });
    } catch (RequestException e) {
      // Code omitted for clarity
    }
  }

  public void onModuleLoad() {
    doGet("/");
  }
}

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