java将2个字符串放在一起以使用ResultSet构建URL

Question

我正在尝试从结果集中的两部分构建url。Prop_值本身只是一个URL，但我需要在它的末尾添加一个venu项。以下是我涉及构建的代码：

String first = (rs1.getString("PROP_VALUE"));   
String second = (rs1.getString("VEN_ITEM"));

String url = (first+second);

URL obj = new URL(url);

HttpsURLConnection con = (HttpsURLConnection) obj.openConnection();

int  responseCode = con.getResponseCode();
System.out.println("\nSending 'GET' request to URL : " +url);
System.out.println("Response Code : " + responseCode);


BufferedReader in = new BufferedReader(
new InputStreamReader(con.getInputStream()));
String inputLine;
StringBuffer content = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
    content.append(inputLine);
    }
    in.close();
    con.disconnect(); 

它将运行，但它只发送PROP_值，而不将venu项附加到它，有什么建议吗

Answer 1

我认为第一个和第二个变量值有问题。请查收。Bcoz，下面的代码运行良好

    String first = ("https://stackoverflow.com/questions");
    String second = ("/48545905/putting-2-strings-together-to-build-url-with-resultset");

    String url = (first+second);

    URL obj = null;
    try {
        obj = new URL(url);
    } catch (MalformedURLException e) {
        e.printStackTrace();
    }

    HttpsURLConnection con = null;
    try {
        con = (HttpsURLConnection) obj.openConnection();
    } catch (IOException e) {
        e.printStackTrace();
    }

    int  responseCode = con.getResponseCode();
    System.out.println("\nSending 'GET' request to URL : " +url);
    System.out.println("Response Code : " + responseCode);


    BufferedReader in = new BufferedReader(
            new InputStreamReader(con.getInputStream()));
    String inputLine;
    StringBuffer content = new StringBuffer();
    while ((inputLine = in.readLine()) != null) {
        content.append(inputLine);
    }
    System.out.println(content);
    in.close();
    con.disconnect();

已获得以下控制台输出：

Sending 'GET' request to URL : Putting 2 Strings Together to Build URL with ResultSet Response Code : 200