HttpClient4.x编码

一、设置请求的编码

第一种方法：

在Hedaer中设置Content-Type

HttpGet httpGet = new HttpGet(url);
httpGet.addHeader("Content-Type", "text/html;charset=UTF-8");

第二种方法：

设置HttpClient的CONTENT_CHARSET

HttpClient httpClient = new DefaultHttpClient();
httpClient.getParams().setParameter(CoreProtocolPNames.HTTP_CONTENT_CHARSET, "UTF-8");

第三种方法：

设置get/post method的CONTENT_CHARSET

HttpGet httpGet = new HttpGet(url);
httpGet.getParams().setParameter(CoreProtocolPNames.HTTP_CONTENT_CHARSET, "UTF-8");

这三种设置方法的优先级依次递增，也就是说如果同时设置，则以后面的为准。如果都没有设置，默认charset是ISO-8859-1。

二、获取response的编码：

HttpResponse response = httpClient.execute(httpGet);
System.out.println(response.getParams().getParameter(CoreProtocolPNames.HTTP_CONTENT_CHARSET));

三、获取response内容：

HttpEntity httpEntity =response.getEntity();
BufferedReader br = new BufferedReader(new InputStreamReader(httpEntity.getContent(), "UTF-8"));
String line;
while((line = br.readLine()) != null){
	System.out.println(line);
	System.out.println("\n");
}




也可在获得response后转码：

HttpEntity httpEntity =response.getEntity();
BufferedReader br = new BufferedReader(new InputStreamReader(httpEntity.getContent()));
String line;
while((line = br.readLine()) != null){
	System.out.println(new String(line.getBytes("ISO-8859-1"),"UTF-8"));
	System.out.println("\n");
}	











参考：httpclient4 中文版帮助文档，最新官方版翻译版（第一章 下）
httpclient编码
HttpClient字符编码