尝试从PL SQL调用Web服务时出现问题

我有一个以json格式（超过4M字符）返回数据的Web服务。我想将这些数据检索到oracle表中。尝试从PL SQL调用Web服务时出现问题

这是我在PL SQL程序与Web服务comunicates：

CREATE OR REPLACE PROCEDURE SGS_CRM.SP_REST_POZIV AS 
    req utl_http.req; 
    res utl_http.resp; 
    url varchar2(32767) := 'http://10.200.24.60/facebook_app/posts/list/'; 
    name varchar2(32767); 
    buffer CLOB;--varchar2(32767); 
    content varchar2(32767);  
begin 
    req := utl_http.begin_request(url, 'POST',' HTTP/1.1'); 
    utl_http.set_header(req, 'user-agent', 'mozilla/4.0'); 
    utl_http.set_header(req, 'content-type', 'application/json'); 
    utl_http.set_header(req, 'Content-Length', length(content)); 
    UTL_HTTP.set_header (req, 'Transfer-Encoding', 'chunked'); 
    UTL_HTTP.SET_BODY_CHARSET('UTF-8'); 

    --utl_http.write_text(req, content); 
    res := utl_http.get_response(req); 
    -- process the response from the HTTP call 
    begin 

    loop 
     utl_http.read_line(res, buffer, TRUE); 
     dbms_output.put_line(buffer); 
    end loop; 
    utl_http.end_response(res); 

    exception  
    when utl_http.end_of_body 
    then 
     utl_http.end_response(res); 
    when utl_http.too_many_requests 
    then 
     utl_http.end_response(res);   
    end; 

end SP_REST_POZIV;

这是我得到的错误：

[Error] Execution (1: 1): ORA-29273: HTTP request failed 
ORA-06512: at "SYS.UTL_HTTP", line 1491 
ORA-06502: PL/SQL: numeric or value error 
ORA-06512: at "SGS_CRM.SP_REST_POZIV", line 24 
ORA-06512: at line 2

当我限制JSON数据要小于4000字符我得到这个作为响应：

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">  
<html><head>  
<title>400 Bad Request</title>  
</head><body> 
<h1>Bad Request</h1> 
<p>Your browser sent a request that this server could not understand.<br /> 
</p> 
<hr> 
<address>Apache/2.2.15 (CentOS) Server at 10.200.24.60 Port 80</address> 
</body></html> 
{"id":"1","page_id":"199186763567391","message":"Kupujete stan? Pro\u0161le godine smo odobrili oko 25% vi\u0161e stambenih kredita nego prethodne, a ove godine nastavljamo istim trendom!\n\nNe znate \u0161ta vam je slede\u0107i korak? Iskoristite povoljan trenutak i prijavite se za besplatne konsultacije sa na\u0161im stru\u010dnjacima: http:\/\/stambeni-krediti.societegenerale.rs\/","link":"http:\/\/www.b92.net\/biz\/pr\/pr.php?nav_category=1244&yyyy=2017&nav_id=1250334","permalink_url":"https:\/\/www.facebook.com\/societegenerale.rs\/posts\/812151465604248","created_time":"2017-04-18 18:00:18","type":"link","name":"Ve\u0107a potra\u017enja za stambenim kreditima u pro\u0161loj godini - B92.net","post_id":"199186763567391_812151465604248","shares":"1","likes":"33","userlike_id":"435025440181160","userlike_name":"Zorica Stevanovic"}

所以我的问题是：

为什么我会收到400错误的请求错误？
为什么我不能拉整个json？

来源

2017-04-21 dj.milojevic

我用下面的处理在过去的SOAP请求..

DECLARE 
'<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> 
    <SOAP-ENV:Body> 
     <m:CXMLTYPE-POSTInput xmlns:m="http://xmlns.oracle.com/orawsv/SOAPTEST/POST"> 
      <m:P_REQUEST-XMLTYPE-IN><Request>4</Request></m:P_REQUEST-XMLTYPE-IN> 
     </m:CXMLTYPE-POSTInput> 
    </SOAP-ENV:Body> 
</SOAP-ENV:Envelope>'); 
    V_SOAP_REQUEST_TEXT CLOB := V_SOAP_REQUEST.getClobVal(); 
    V_REQUEST   UTL_HTTP.REQ; 
    V_RESPONSE   UTL_HTTP.RESP; 
    V_BUFFER   VARCHAR2(32000); 
    V_RESPONSE_TEXT  CLOB; 
    V_RESPONSE_XML  XMLTYPE; 
    V_WSDL    XMLTYPE; 
BEGIN 
    DBMS_LOB.CREATETEMPORARY(V_RESPONSE_TEXT, TRUE); 

    begin 
    V_REQUEST := UTL_HTTP.BEGIN_REQUEST(URL => :URL, METHOD => 'POST'); 
    UTL_HTTP.SET_HEADER(V_REQUEST, 'User-Agent', 'Mozilla/4.0'); 
    V_REQUEST.METHOD := 'POST'; 
    UTL_HTTP.SET_HEADER (R => V_REQUEST, NAME => 'Content-Length', VALUE => DBMS_LOB.GETLENGTH(V_SOAP_REQUEST_TEXT)); 
    UTL_HTTP.WRITE_TEXT (R => V_REQUEST, DATA => V_SOAP_REQUEST_TEXT); 
    V_RESPONSE := UTL_HTTP.GET_RESPONSE(V_REQUEST); 
    LOOP 
     UTL_HTTP.READ_LINE(V_RESPONSE, V_BUFFER, TRUE); 
     if (LENGTH(V_BUFFER) > 0) then 
     DBMS_LOB.WRITEAPPEND(V_RESPONSE_TEXT,LENGTH(V_BUFFER),V_BUFFER); 
     end if; 
    END LOOP; 
    UTL_HTTP.END_RESPONSE(V_RESPONSE); 
    EXCEPTION 
    WHEN UTL_HTTP.END_OF_BODY THEN 
     UTL_HTTP.END_RESPONSE(V_RESPONSE); 
    END; 

    V_RESPONSE_XML := XMLTYPE(V_RESPONSE_TEXT); 

    select XMLQUERY 
     (
      'declare namespace SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"; (::) 
      declare namespace SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"; (::) 
      declare namespace xsi="http://www.w3.org/2001/XMLSchema-instance"; (::) 
      declare namespace xsd="http://www.w3.org/2001/XMLSchema"; (::) 
      declare namespace m="http://xmlns.oracle.com/orawsv/WSDLTEST/TEST_CLOB"; (::) 
      $resp/SOAP-ENV:Envelope/SOAP-ENV:Body/*' 
      passing V_RESPONSE_XML as "resp" returning content 
     ) 
    into V_WSDL 
    from DUAL; 

    select V_WSDL.getClobVal() 
    into :RESULT 
    from dual; 

    DBMS_LOB.FREETEMPORARY(V_RESPONSE_TEXT); 

END; 
/

也许你可以改变它，以满足您的需求..

来源

2017-04-23 03:49:05

尝试从PL SQL调用Web服务时出现问题

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