FileNotFoundException 与 Urlconnection 获取请求

Question

用 URLConnection 执行 GET 请求。代码在这里

java.net.URL url = new java.net.URL(requestUrl);
        URLConnection urlConnection = url.openConnection();
        is = new BufferedInputStream(urlConnection.getInputStream());

获得 java.io.FileNotFoundException 而请求 url 是正确的。我认为这可能是 https ssl 证书问题。如果其他人遇到此问题并已解决，请更新。

Answer 1

Encode your parameter to create an URL for request.Unsupported character in parameter value may cause to exceptions it can be a white space also.

    String url = "http://url.com";
    String charset = "UTF-8";  // Or in Java 7 and later, use the constant: java.nio.charset.StandardCharsets.UTF_8.name()
    String param1 = "value1";
    String param2 = "value2";
    // ...

    String query = String.format("param1=%s&param2=%s", 
         URLEncoder.encode(param1, charset), 
         URLEncoder.encode(param2, charset));

    URLConnection connection = new URL(url + "?" + query).openConnection();
    connection.setRequestProperty("Accept-Charset", charset);
    InputStream response = connection.getInputStream();
// ...

Courtsey

FileNotFoundException 与 Urlconnection 获取请求

FileNotFoundException with Urlconnection Get Request

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