Jetbrains全系列IDE使用 1年只要46元 售后保障 童叟无欺
setrequestproperty
设置http请求头
HttpURLConnection.setRequestProperty(String key，String value);
这个我居然都忘记了，哎~真是岁数大了，心好累。。。
例如：下面就是一个完整的原始网络请求方式
HttpURLConnection conn = null;
try {
URL my_url = new URL(log());
//得到connection对象。
conn = (HttpURLConnection) my_url.openConnection();
//允许写出
conn.setDoOutput(true);
//允许读入
conn.setDoinput(true);
//设置请求方式
conn.setRequeSTMethod(“POST”);
conn.setUseCaches(false);
conn.setConnectTimeout(60 * 1000);
conn.setreadTimeout(60 * 1000);
//设置请求头
conn.setRequestProperty(“Charsert”, “UTF-8”);
conn.setRequestProperty(“Content-type”, “application/JSON; charset=UTF-8”);//设置参数类型是json格式
conn.setRequestProperty(“Connection”, “Keep-Alive”);
conn.setRequestProperty(“logType”, “base”);
//连接网络。请求行，请求头的设置必须放在网络连接前
conn.connect();
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(conn.getOutputStream(), “UTF-8”));
writer.write(String.valueOf(hashMap));
writer.close();
//得到响应码
int responseCode = conn.getResponseCode();
MyLogcat.e(“网络传输” + responseCode + “***” + conn.getResponseMessage() + String.valueOf(hashMap));
if (responseCode == 200) {
//得到响应流
InputStream inputStream = conn.getInputStream();
//将响应流转换成字符串
String returnLine = getStringFROMInputStream(inputStream);
String str = “Success” + conn.getResponseCode() + “—” + conn.getResponseMessage() + “—” + returnLine;
} else {
String str = “ERROR” + conn.getResponseCode() + “—” + conn.getResponseMessage();
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (conn != null) {
conn.disconnect();
}
}
/**
* 通过字节输入流返回一个字符串信息
*/
private static String getStringFromInputStream(InputStream is) throws Exception {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = 0;
while ((len = is.read(buffer)) != -1) {
baos.write(buffer, 0, len);
}
is.close();
// 把流中的数据转换成字符串, 采用的编码是: utf-8
String Status = baos.toString();
baos.close();
return status;
}
相关阅读
在Android项目中使用到了HttpURLConnection请求资源，对于其中的方法setRequestProperty()的调用顺序有些疑惑。API注释如下所示：即：
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