android 的android httpClient详解

Android HttpClient是Android平台提供的一个HTTP请求客户端，使用它可以方便地发送HTTP请求并获得请求的响应。下面是Android HttpClient的详细解释：
1. 创建HttpClient对象：
```java
HttpClient httpClient = new DefaultHttpClient();
```
2. 创建请求方法：
```java
HttpGet httpGet = new HttpGet(url); // 创建GET请求
HttpPost httpPost = new HttpPost(url); // 创建POST请求
```
3. 设置请求参数：
```java
List params = new ArrayList();
params.add(new BasicNameValuePair("param1", "value1"));
httpPost.setEntity(new UrlEncodedFormEntity(params, "UTF-8"));
```
4. 发送请求并获取响应：
```java
HttpResponse httpResponse = httpClient.execute(httpGet); // 发送GET请求
HttpResponse httpResponse = httpClient.execute(httpPost); // 发送POST请求
```
5. 处理响应：
```java
int statusCode = httpResponse.getStatusLine().getStatusCode(); // 获取响应状态码
if (statusCode == HttpStatus.SC_OK) {
HttpEntity httpEntity = httpResponse.getEntity(); // 获取响应实体
String response = EntityUtils.toString(httpEntity); // 将实体转换为字符串
// 处理响应数据
} else {
// 处理错误情况
}
```
注意：Android HttpClient已被标记为过时，推荐使用HttpURLConnection或OkHttp来替代。