Question

我通过DefaultHttpClient提交多个HTTP请求。问题是从未在请求中设置“主机”标头。例如，通过执行以下GET请求：

HttpUriRequest request = new HttpGet("http://www.myapp.com");
org.apache.http.client.HttpClient client = new DefaultHttpClient();
HttpResponse httpResponse = client.execute(request);

生成的请求对象未使用值

设置强制“主机”标头

Host: myapp.com

任何提示？

Answer 1

我的错。实际上，DefaultHttpClient会根据HTTP规范的要求添加Host标头。

我的问题是由于我之前添加的其他自定义标头，其值已结束 “\r\n”。这使DefaultHttpClient自动添加的所有后续标头无效。我做了类似的事情：

HttpUriRequest request = new HttpGet("http://www.myapp.com");
org.apache.http.client.HttpClient client = new DefaultHttpClient();
request.addHeader(new BasicHeader("X-Custom-Header", "Some Value\r\n");
HttpResponse httpResponse = client.execute(request);

在HTTP请求中生成以下标头序列：

GET /index.html HTTP/1.1
X-Custom-Header: Some value

Host: www.example.com

X-Custom-Header和Host之间的空格使Host标头无效。修正：

HttpUriRequest request = new HttpGet("http://www.myapp.com");
org.apache.http.client.HttpClient client = new DefaultHttpClient();
request.addHeader(new BasicHeader("X-Custom-Header", "Some Value");
HttpResponse httpResponse = client.execute(request);

这会产生：

GET /index.html HTTP/1.1
X-Custom-Header: Some value
Host: www.example.com

Answer 2

只需使用addHeader在请求中设置主机标头。

Java - DefaultHttpClient和“Host”头[Apache HttpComponent]

2 个答案: