java http请求url报错505，但是浏览器可以正常返回json数据

有点郁闷的，不知道问题究竟在哪里。。。。

平时的请求都没有问题，今天突然给我报错了！我确信请求方法没问题，在网上找了一堆，终于看到一个说参数里面有空格的，当我把参数里面的空格替换了之后，果然好了

get请求方法：这方法也是网上copy的，具体哪里忘了

  public static String sendGet(String url, String param) throws IOException
    {
        return sendGet(url, param, "utf-8");
    }

    public static String sendGet(String url, String param, String charSetName) throws IOException
    {
        String result = "";
        BufferedReader in = null;
        try
        {
            String urlNameString = url + "?" + param;
            URL realUrl = new URL(urlNameString);
            // 打开和URL之间的连接
            URLConnection connection = realUrl.openConnection();
            // 设置通用的请求属性
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 建立实际的连接
            connection.connect();
            // 定义 BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(connection.getInputStream(), charSetName));
            String line;
            while ((line = in.readLine()) != null)
            {
                result += line;
            }
        }
        finally
        {
            try
            {
                if (in != null)
                {
                    in.close();
                }
            }
            catch (Exception e2)
            {
                e2.printStackTrace();
            }
        }
        return result;
    }

    public static String sendPost(String url, String param) throws IOException
    {
        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try
        {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            URLConnection conn = realUrl.openConnection();
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 获取URLConnection对象对应的输出流
            out = new PrintWriter(conn.getOutputStream());
            // 发送请求参数
            out.print(param);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = in.readLine()) != null)
            {
                result += line;
            }
        }
        finally
        {
            try
            {
                if (out != null)
                {
                    out.close();
                }
                if (in != null)
                {
                    in.close();
                }
            }
            catch (IOException ex)
            {
                ex.printStackTrace();
            }
        }
        return result;
    }

参数里面就因为name参数有空格

然后把所有name里面的空格转换一下再次请求就OK了

name.replaceAll("\\+","%20")