java - postData 无法解析为类型

Question

我是 Android 编程新手。我正在尝试使用 post 将一些数据发布到服务器。我用谷歌搜索并想出了这个:

public void postData() {
    // Create a new HttpClient and Post Header
        HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost("http://www.yoursite.com/script.php");
        try {
            // Add your data
            List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
            nameValuePairs.add(new BasicNameValuePair("id", "12345"));
            nameValuePairs.add(new BasicNameValuePair("stringdata", "AndDev is Cool!"));
            httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

            // Execute HTTP Post Request
            HttpResponse response = httpclient.execute(httppost);

        } catch (ClientProtocolException e) {
            // TODO Auto-generated catch block
        } catch (IOException e) {
            // TODO Auto-generated catch block
        }

   }

我的问题是我在这段代码的第一行遇到错误:

• postData 无法解析为类型
• 标记“{”存在语法错误，请删除此标记
• 标记“void”存在语法错误，@预期

我正在使用 Eclipse，并使用 Shift+Ctrl+o 来获取所有导入。

Answer 1

您的问题(根据您目前提供的信息)是您在类外部声明函数 postData 。

Java中的函数需要在类中声明。要么，您因使用过多的 } 而意外关闭了前一类(在这种情况下，您应该在额外的 } 处出现错误)，或者您还没有t 声明了一个类。

该类可能如下所示:

public class MyPoster {

    public void postData() {
        // Create a new HttpClient and Post Header
        HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost("http://www.yoursite.com/script.php");
        try {
            // Add your data
            List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
            nameValuePairs.add(new BasicNameValuePair("id", "12345"));
            nameValuePairs.add(new BasicNameValuePair("stringdata", "AndDev is Cool!"));
            httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

            // Execute HTTP Post Request
            HttpResponse response = httpclient.execute(httppost);

        } catch (ClientProtocolException e) {
            // TODO Auto-generated catch block
        } catch (IOException e) {
            // TODO Auto-generated catch block
        }

   }
}