HttpClient异常:java.lang.IllegalArgumentException:主机参数为null [英] HttpClient exception: java.lang.IllegalArgumentException: host parameter is null

问题描述

我有下一个代码

    URL targetUrl = ...
    HttpClient client = new HttpClient(connectionManager);
    GetMethod getMethod = new GetMethod();
    getMethod.setPath(targetUrl.getPath());

    HostConfiguration hostConfiguration = getConfiguration(targetUrl) //unknown lib code

    client.executeMethod(hostConfiguration, getMethod);

在某些情况下(在某些主机上)，我得到

In some cases(on some hosts) I get

java.lang.IllegalArgumentException:主机参数为空"

在client.executeMethod调用上.

on client.executeMethod call.

为什么会这样?

推荐答案

这是代理的书面示例 http://svn.apache.org/viewvc/httpcomponents/oac.hc3x/trunk/src/examples/ProxyTunnelDemo.java?view = co <​​/a>就我而言，问题在于hostConfiguration的创建

This is a write exampe of proxy http://svn.apache.org/viewvc/httpcomponents/oac.hc3x/trunk/src/examples/ProxyTunnelDemo.java?view=co In my case problem was in hostConfiguration creation

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