Question

我是Android编程的新手。我正在尝试使用post将一些数据发布到服务器。我用Google搜索并提出了这个问题：

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收到错误：

无法将postData解析为类型
令牌“{”上的语法错误，删除此令牌
令牌“void”，@ expected

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

Answer 1

你的问题（基于你目前给出的信息）是你在一个类之外声明函数postData。

Java中的函数需要在类中声明。或者，你通过让一个}太多（在这种情况下你应该在额外的}有错误），或者你没有宣布一个类，意外地关闭了上一课。 / p>

该课程可能如下所示：

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
        }

   }
}

postData无法解析为某种类型

1 个答案: