在Oracle 11g中從給定URL下載文件並將其保存到BLOB類型列的過程

Question

我遇到了問題。我需要在Oracle 11g中創建一個過程，它將從給定行獲取URL並從該URL下載文件，並將其保存在BLOB類型列中。你們能告訴我，我的方法應該是實現這個目標嗎？

Answer 1

需要看到文檔包UTL_HTTP

這是使用

此的sample從樣品上面的代碼

begin 

    load_binary_from_url('http://www.oracle.com/us/hp07-bgf3fafb-db12c-2421053.jpg'); 
end; 


CREATE TABLE http_blob_test (
    id NUMBER(10), 
    url VARCHAR2(255), 
    data BLOB, 
    CONSTRAINT http_blob_test_pk PRIMARY KEY (id) 
); 

CREATE SEQUENCE http_blob_test_seq; 

CREATE OR REPLACE PROCEDURE load_binary_from_url (p_url IN VARCHAR2) AS 
    l_http_request UTL_HTTP.req; 
    l_http_response UTL_HTTP.resp; 
    l_blob   BLOB; 
    l_raw   RAW(32767); 
BEGIN 
    -- Initialize the BLOB. 
    DBMS_LOB.createtemporary(l_blob, FALSE); 

    -- Make a HTTP request and get the response. 
    l_http_request := UTL_HTTP.begin_request(p_url); 
    l_http_response := UTL_HTTP.get_response(l_http_request); 

    -- Copy the response into the BLOB. 
    BEGIN 
    LOOP 
     UTL_HTTP.read_raw(l_http_response, l_raw, 32767); 
     DBMS_LOB.writeappend (l_blob, UTL_RAW.length(l_raw), l_raw); 
    END LOOP; 
    EXCEPTION 
    WHEN UTL_HTTP.end_of_body THEN 
     UTL_HTTP.end_response(l_http_response); 
    END; 

    -- Insert the data into the table. 
    INSERT INTO http_blob_test (id, url, data) 
    VALUES (http_blob_test_seq.NEXTVAL, p_url, l_blob); 

    -- Relase the resources associated with the temporary LOB. 
    DBMS_LOB.freetemporary(l_blob); 
EXCEPTION 
    WHEN OTHERS THEN 
    UTL_HTTP.end_response(l_http_response); 
    DBMS_LOB.freetemporary(l_blob); 
    RAISE; 
END load_binary_from_url; 
/