Question

我正在开发一个根据输入绘制地图路线的应用程序。这是一个示例输入URI： -

http://maps.googleapis.com/maps/api/directions/json?origin=38.842794,-77.408132&destination=38.8685938,-77.2711787&region=en&sensor=true&waypoints=optimize:true|38.839619,-77.410309

使用httpget，httpresponse我计划从json中的URI获取响应。我对此链接有疑问。

HttpGet httpget = new HttpGet(uri);
        HttpResponse response;
        try
        {
            response = httpclient.execute(httpget);
            HttpEntity entity = response.getEntity();
            if(entity!=null)
            {

                InputStream instream = entity.getContent();
                StreamToString st = new StreamToString();
                result = st.convertStreamtoString(instream);

                blah blah blah ...

我收到一个错误说： -

Caused by: java.lang.IllegalArgumentException: Illegal character in query at index 160: http://maps.googleapis.com/maps/api/directions/json?origin=38.842794,-77.408132&destination=38.8685938,-77.2711787&region=en&sensor=true&waypoints=optimize:true|38.839619,-77.410309

所以我认为可能是因为我没有编码URI。所以后来我尝试使用

uri = URLEncoder.encode(uri, "UTF-8");

然后我得到了一个不同的错误说： -

java.lang.IllegalStateException: Target host must not be null, or set in parameters. scheme=null, host=null, path=http://maps.googleapis.com/maps/api/directions/json?origin=38.842794,-77.408132&destination=38.8685938,-77.2711787&region=en&sensor=true&waypoints=optimize:true|38.839619,-77.410309

请帮我解决这个问题。提前谢谢。

Java中的URL问题

0 个答案: