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我有一个烦人的错误,我有一段时间无法解决。我最近被介绍到基于容器的安全性并尝试实现它。我已将领域配置如下:

<Realm className="org.apache.catalina.realm.JDBCRealm" 
debug="99" 
driverName="com.mysql.jdbc.Driver" 
connectionURL="jdbc:mysql://127.0.0.1:3306/identify" 
connectionName="adm" connectionPassword="pw" 
userTable="users" userNameCol="login" 
userCredCol="password" 
allRolesMode="authOnly" /> 
</Realm>

不幸的是,我无法使用此登录。日志错误消息是:

SEVERE: Exception performing authentication
    java.sql.SQLException: You have an error in your SQL syntax; 
    check the manual that corresponds to your MySQL server version 
    for the right syntax to use near 'null WHERE login = 'user1'' at line 1
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2928)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1571)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1666)
at com.mysql.jdbc.Connection.execSQL(Connection.java:2994)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:936)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1030)
at org.apache.catalina.realm.JDBCRealm.getRoles(JDBCRealm.java:640)
at org.apache.catalina.realm.JDBCRealm.authenticate(JDBCRealm.java:430)
at org.apache.catalina.realm.JDBCRealm.authenticate(JDBCRealm.java:355)
at org.apache.catalina.realm.CombinedRealm.authenticate(CombinedRealm.java:146)
at org.apache.catalina.realm.LockOutRealm.authenticate(LockOutRealm.java:180)
at org.apache.catalina.authenticator.FormAuthenticator.authenticate(FormAuthenticator.java:282)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:440)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:851)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:278)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:300)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:636)

请注意用户名周围的 ''... 这是正确的吗?

如您所见,我也使用allRolesMode="authOnly",因为我不需要此功能,而且数据库没有并且永远不会有额外的用户角色列(如果不使用它,那么每个用户都会使用它是毫无意义的在此列中具有相同的值 - 资源浪费很大。)。

服务器是Tomcat 7.0.19

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2 回答 2

1

您必须设置userRoleTableroleNameCol属性以防万一allRolesMode="authOnly"。没有它们,SQL 查询将包含字符串null(如您在异常消息中所见)。的值userRoleTable可以与 的值相同userTableroleNameCol也可以与 的值相同userNameCol

一个简单的解决方法是创建一个模拟roles表的 SQL 视图:

CREATE VIEW roles (username, role)
AS SELECT username, 'user' FROM users;

和一个解决方案:

<Realm className="org.apache.catalina.realm.JDBCRealm" 
    driverName="com.mysql.jdbc.Driver" 
    connectionURL="jdbc:mysql://127.0.0.1:3306/test" 
    connectionName="..." connectionPassword="..." 
    userTable="users" userNameCol="username" userCredCol="password" 
    userRoleTable="users" roleNameCol="username"
/> 

(令人惊讶的是,它没有任何allRolesMode.)

所需的web.xml片段:

<security-constraint>
    <web-resource-collection>
        <web-resource-name>protected zone</web-resource-name>
        <url-pattern>/prot/*</url-pattern>
    </web-resource-collection>
    <auth-constraint>
        <role-name>*</role-name>
    </auth-constraint>
</security-constraint>

<security-role>
     <role-name>*</role-name>
</security-role>

(注意:假设您有 100 万用户,users表中具有 100 万个user\0字符串的新属性仅花费大约 5 兆字节。我同意这不是一个漂亮的解决方案,但现在它不是不能容忍的大。)

于 2011-10-19T22:52:06.937 回答
0

Tomcat 7.0.27.0JDK 1.6

我仅将 tomcat 用于身份验证和not for authorization

以下是设置

上下文.xml

<Realm className="org.apache.catalina.realm.JDBCRealm"  
       connectionName="login"  
       connectionPassword="password"    
       connectionURL="jdbc:oracle:thin:@127.0.0.1:1521:authdb"    
       driverName="oracle.jdbc.OracleDriver"        
       userTable="appusers"  
       userNameCol="username"              
       userCredCol="password"  
       allRolesMode="authOnly"/>  

web.xml

<security-constraint>  
    <web-resource-collection>  
        <web-resource-name>Protected Area</web-resource-name>  
        <url-pattern>/modules/*</url-pattern>  
        <url-pattern>/index.jsp</url-pattern>  
    </web-resource-collection>  
    <auth-constraint>
        <role-name>*</role-name>    
    </auth-constraint>
</security-constraint>     
<!--
security-role>
    <role-name>user</role-name>
security-role>
-->

我通过<security-role>从 web.xml 中删除块
并将auth-contraint角色名称设置为*

如果您从中删除auth-contraint块,security-contraint则不会调用 Web 上下文身份验证本身!

于 2013-01-17T11:09:27.237 回答