Question

我正在开发一个Android应用程序，其中我需要通过我的android活动获取网站的HTTP标题，下面引用的链接，我找到了一个代码，但没有得到所有标题。

http://www.mkyong.com/java/how-to-get-http-response-header-in-java/

我需要如下图所示的结果

a busy cat http://cdn.osxdaily.com/wp-content/uploads/2011/07/get-http-header-from-website-with-curl.jpg

请支持。

Answer 1

假设你有

HttpResponse response ;

然后执行。（针对特定标题）

Header[] headers = response.getHeaders("Server");
        if (headers.length > 0) {
            String value = headers[0].getValue();

并检索所有标题

Header[] headers = response.getAllHeaders();

for(int i =0 ; i<headers.length;i++)
{
System.out.println("header : "+i+" - > "+headers[i]);
}

Answer 2

查看适用于android的java示例代码：

方式-1

URL url = new URL("http://www.google.com:80"); URLConnection conn = url.openConnection(); Map<String, List<String>> headerFields = conn.getHeaderFields(); Set<String> headerFieldsSet = headerFields.keySet(); Iterator<String> hearerFieldsIter = headerFieldsSet.iterator(); while (hearerFieldsIter.hasNext()) { String headerFieldKey = hearerFieldsIter.next(); List<String> headerFieldValue = headerFields.get(headerFieldKey); StringBuilder sb = new StringBuilder(); for (String value : headerFieldValue) { sb.append(value); sb.append(""); } System.out.println(headerFieldKey + "=" + sb.toString()); }

方法-2 （参考：Get headers from HttpClient in android）

HttpClient client = HttpClientBuilder.create().build(); HttpGet request = new HttpGet("http://mkyong.com"); HttpResponse response = client.execute(request); //get all headers Header[] headers = response.getAllHeaders(); for (Header header : headers) { System.out.println("Key : " + header.getName() + " ,Value : " + header.getValue()); } //get header by 'key' String server = response.getFirstHeader("Server").getValue();

希望它会帮助你..

Answer 3

根据http post或get，您可以使用getAllHeaders或getHeaders方法。这是http post的一个例子。

HTTP POST方法：

DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(URL);

第一种方法：

public Header[] getAllHeaders () 
Added in API level 1
Returns all the headers of this message. Headers are orderd in the sequence they will be sent over a connection.

Returns
all the headers of this message

第二种方法描述：

public Header[] getHeaders (String name) 
Added in API level 1
Returns all the headers with a specified name of this message. Header values are ignored. Headers are orderd in the sequence they will be sent over a connection.

Parameters
name  the name of the headers to return. 

Returns
the headers whose name property equals name.

Answer 4

试试这个：

HttpResponse回复; // http响应

从回复中获取实体

final HttpEntity entity = response.getEntity();
if(entity == null) {
    return;
}

从实体中获取Header对象。 Refer this

final Header header = entity.getContentEncoding();
if (header == null) {
    return;
}

获取每个标题元素Refer this

for (HeaderElement h : header.getElements()) {
    if (h.getName().equalsIgnoreCase(HEADER_PARAMETER_VALUE)) {
        h.getValue();
        return;
    }
}

Android代码获取网站的HTTP标头信息

4 个答案: