URLConnection 请求头和返回值编码
/**
* 发送post请求
* */
public static String sendPostWb(String url, String param) {
PrintWriter out = null;
BufferedReader in = null;
String result = "";
System.out.println("请求参数:" + param);
try {
URL realUrl = new URL(url);
// 打开和URL之间的连接
URLConnection conn = realUrl.openConnection();
// 设置通用的请求属性
conn.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
//设置接受的文件类型,*表示一切可以接受的
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
//TODO 新添加的请求头编码
conn.setRequestProperty("Accept-Charset", "UTF-8");
conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 发送POST请求必须设置如下两行
conn.setDoOutput(true);
conn.setDoInput(true);
// 获取URLConnection对象对应的输出流
out = new PrintWriter(conn.getOutputStream());
// 发送请求参数
out.print(param);
// flush输出流的缓冲
out.flush();
// 定义BufferedReader输入流来读取URL的响应
/*in = new BufferedReader(
new InputStreamReader(conn.getInputStream()));*/
//TODO 新添加设置,返回编码
in = new BufferedReader(
new InputStreamReader(conn.getInputStream(), "utf-8"));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
System.out.println("发送 POST 请求出现异常!" + e.toString());
e.printStackTrace();
}
// 使用finally块来关闭输出流、输入流
finally {
try {
if (out != null) {
out.close();
}
if (in != null) {
in.close();
}
} catch (IOException ex) {
System.out.println("发送 POST 请求出现异常!" + ex.toString());
ex.printStackTrace();
}
}
return result;
}