我需要根据 XSD 验证传入文件。两者都将在服务器文件系统上。

我查看了 dbms_xmlschema，但在让它工作时遇到了问题。

使用一些 Java 会更容易吗？
我可以放入数据库的最简单的类是什么？

这是一个简单的例子:

DECLARE
  v_schema_url       VARCHAR2(200) := 'http://www.example.com/schema.xsd';
  v_blob             bLOB;
  v_clob             CLOB;
  v_xml XMLTYPE;
BEGIN
  begin
    dbms_xmlschema.deleteschema(v_schema_url);
  exception
    when others then
     null;
  end;

  dbms_xmlschema.registerSchema(schemaURL => v_schema_url,
                                schemaDoc => '
<xs:schema targetNamespace="http://www.example.com" 
xmlns:ns="http://www.example.com" 
xmlns:xs="http://www.w3.org/2001/XMLSchema" 
elementFormDefault="qualified" attributeFormDefault="unqualified" version="3.0">
<xs:element name="something"  type="xs:string"/>
</xs:schema>',
                                local => TRUE);

  v_xml := XMLTYPE.createxml('<something xmlns="http://www.xx.com" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://www.example.com/schema.xsd">
data
</something>');

  IF v_xml.isschemavalid(v_schema_url) = 1 THEN
    dbms_output.put_line('valid');
  ELSE
    dbms_output.put_line('not valid');
  END IF;
END;

这会产生以下错误:

ORA-01031: insufficient privileges
ORA-06512: at "XDB.DBMS_XDBZ0", line 275
ORA-06512: at "XDB.DBMS_XDBZ", line 7
ORA-06512: at line 1
ORA-06512: at "XDB.DBMS_XMLSCHEMA_INT", line 3
ORA-06512: at "XDB.DBMS_XMLSCHEMA", line 14
ORA-06512: at line 12

最佳答案

更新

XML Schema 注册需要以下权限:

grant alter session to <USER>;
grant create type to <USER>; /* required when gentypes => true */
grant create table to <USER>; /* required when gentables => true */

出于某种原因，如果这些权限是通过角色间接授予的，这是不够的，但这些权限需要直接授予模式/用户。

原始答案

我还注意到参数 gentables 和 gentypes 的默认值引发了 insufficient privileges 异常。可能我只是缺乏使用这些功能的一些特权，但目前我还不太了解它们的作用。我很高兴禁用它们并且验证似乎工作正常。

我在 Oracle Database 11g 11.2.0.1.0 版上运行

gentypes => true, gentables => true

dbms_xmlschema.registerschema(schemaurl => name,
                              schemadoc => xmltype(schema),
                              local => true
                              --gentypes => false,
                              --gentables => false
                              );

ORA-01031: insufficient privileges
ORA-06512: at "XDB.DBMS_XMLSCHEMA_INT", line 55
ORA-06512: at "XDB.DBMS_XMLSCHEMA", line 159
ORA-06512: at "JANI.XML_VALIDATOR", line 38
ORA-06512: at line 7

gentypes => false, gentables => true

dbms_xmlschema.registerschema(schemaurl => name,
                              schemadoc => xmltype(schema),
                              local => true,
                              gentypes => false
                              --gentables => false
                              );

ORA-31084: error while creating table "JANI"."example873_TAB" for element "example"
ORA-01031: insufficient privileges
ORA-06512: at "XDB.DBMS_XMLSCHEMA_INT", line 55
ORA-06512: at "XDB.DBMS_XMLSCHEMA", line 159
ORA-06512: at "JANI.XML_VALIDATOR", line 38
ORA-06512: at line 7

gentypes => true, gentables => false

dbms_xmlschema.registerschema(schemaurl => name,
                              schemadoc => xmltype(schema),
                              local => true,
                              --gentypes => false
                              gentables => false
                              );

ORA-01031: insufficient privileges
ORA-06512: at "XDB.DBMS_XMLSCHEMA_INT", line 55
ORA-06512: at "XDB.DBMS_XMLSCHEMA", line 159
ORA-06512: at "JANI.XML_VALIDATOR", line 38
ORA-06512: at line 7

gentypes => false, gentables => false

dbms_xmlschema.registerschema(schemaurl => name,
                              schemadoc => xmltype(schema),
                              local => true,
                              gentypes => false,
                              gentables => false
                              );

PL/SQL procedure successfully completed.

关于xml - 根据 Oracle PL/SQL 中的模式验证 XML 文件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/82047/