微信公众号调用客服接口发送信息

public void customSend(String content,String openId,String accessToken){
JSONObject json=new JSONObject();
JSONObject text=new JSONObject();
text.element("content", content);
json.element("touser", openId);
json.element("text", text);
json.element("msgtype", "text");
PrintWriter out = null;
BufferedReader in = null;
String result = "";
try {
URL realUrl = new URL("https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token="+accessToken);
// 打开和URL之间的连接
URLConnection conn = realUrl.openConnection();
// 设置通用的请求属性
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
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(json.toString());
// 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()));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
System.out.println("客服消息result："+result);
} catch (Exception e) {
System.out.println("向客服发送 POST 请求出现异常！"+e);
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){
ex.printStackTrace();
}
}

}