Oracle中可以通过UTL_HTTP发送http请求，例子如下：

CREATE OR REPLACE PROCEDURE test(v_userid in varchar2,v_content in varchar2 ) IS req UTL_HTTP.REQ;
  resp UTL_HTTP.RESP;
  v_message  varchar2(10000);
  xmlstr  varchar2(30000);
begin
    begin
      req  := UTL_HTTP.BEGIN_REQUEST('http://ip:port/weixin?userid='||v_userid||'&'||'content='||v_content);
      utl_http.set_header(req,'Content-Type','text/html; charset=utf-8');
      utl_http.write_text(req,xmlstr); --通过body发送消息
      xmlstr:=v_content; 
      utl_http.set_header(req,'Content-Length',lengthb(xmlstr));
      utl_http.write_text(req,xmlstr);
      resp := UTL_HTTP.GET_RESPONSE(req);  
      LOOP
        UTL_HTTP.read_line(resp,v_message,TRUE);
        dbms_output.put_line(v_message);
      END LOOP;

      utl_http.end_request(req);
      utl_http.end_response(resp);
    EXCEPTION
      WHEN utl_http.end_of_body THEN
        utl_http.end_response(resp);
        WHEN OTHERS THEN
      utl_http.end_response(resp);
      utl_http.end_request(req);
    end;
END test;

调用的时候，如果v_content中包含空格或者其他特殊字符的时候请求就会失败，要想解决这个问题的话，就需要对内容进行编码，我们可以通过url encode来对相应的内容编码，web应用接收到相应的数据做相应的解码即可，修改后的代码如下：

CREATE OR REPLACE PROCEDURE test(v_userid in varchar2,v_content in varchar2 ) IS req UTL_HTTP.REQ;
  resp UTL_HTTP.RESP;
  v_message  varchar2(10000);
  xmlstr  varchar2(30000);
begin
    begin
      req  := UTL_HTTP.BEGIN_REQUEST('http://ip:port/weixin?userid='||v_userid||'&'||'content='||utl_url.escape(v_content,true,'UTF8'));
      utl_http.set_header(req,xmlstr); --通过body发送消息
      xmlstr:=utl_url.escape(v_content,'UTF8'); 
      utl_http.set_header(req,TRUE);
        dbms_output.put_line(v_message);
      END LOOP;

      utl_http.end_request(req);
      utl_http.end_response(resp);
    EXCEPTION
      WHEN utl_http.end_of_body THEN
        utl_http.end_response(resp);
        WHEN OTHERS THEN
      utl_http.end_response(resp);
      utl_http.end_request(req);
    end;
END test;