Question

我想在Java项目中从Google Agenda获取ICS文件，而不使用API（仅获取ics的内容）。日历设置为“公开”，我从参数（https://www.google.com/calendar/ical/perrine.lbc62%40gmail.com/public/basic.ics）获取公共地址。如果我在浏览器中尝试此地址，我可以下载该文件（如果我没有连接，则为事件）。

但是，如果我尝试使用curl命令行或使用我的Java代码获取内容，则它不起作用：我无法连接到URL。

Curl说：curl：（7）无法连接到主机

Java代码如下：

private ICalendar getICalWithUrl(String url) throws Exception {
    ICalendar iCal = null; 
    // Create an instance of HttpClient.
    HttpClient client = new HttpClient();
    // Create a method instance.
    GetMethod method = new GetMethod(url);
    // Provide custom retry handler is necessary
    method.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler(3, false));
    try {
      // Execute the method.
      int statusCode = client.executeMethod(method);
      if (statusCode != HttpStatus.SC_OK) {
        throw new Exception("Unable to get content at the url "+url+". Method failed: " + method.getStatusLine());
      }
      // Read the response body.
      byte[] responseBody = method.getResponseBody();
      iCal=BiweeklyManager.parse(new String(responseBody));
    } finally {
      // Release the connection.
      method.releaseConnection();
    }
    return iCal;  
}

堆栈跟踪如下：

java.net.ConnectException: Connection refused
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
        at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
        at java.net.Socket.connect(Socket.java:519)
        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:550)
        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.<init>(SSLSocketImpl.java:394)
        at com.sun.net.ssl.internal.ssl.SSLSocketFactoryImpl.createSocket(SSLSocketFactoryImpl.java:123)
        at org.apache.commons.httpclient.protocol.SSLProtocolSocketFactory.createSocket(SSLProtocolSocketFactory.java:81)
        at org.apache.commons.httpclient.protocol.SSLProtocolSocketFactory.createSocket(SSLProtocolSocketFactory.java:126)
        at org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:706)
        at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:386)
        at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:170)
        at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:396)
        at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:324)

你知道为什么我在这种情况下无法访问网址，我该怎么办才能访问它？

非常感谢您的回答:)

Answer 1

您是否在企业环境中？这听起来像代理设置问题，特别是考虑到您从浏览器访问它。

使用--proxy选项尝试curl（参见例如Linux curl command with proxy）

Google日历 - 获取ics文件（不含API）

1 个答案: