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POHow to set up a JDBCRealm in Apache Tomcat 7?
 

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  1. POHow to set up a JDBCRealm in Apache Tomcat 7?
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    <p>I would like that the users (which are allowed to log on to my site) are loaded from a MySQL database. To do that I want to set up a JDBCRealm for my Apache Tomcat 7 application server.</p> <p>I've read through the <a href="http://tomcat.apache.org/tomcat-7.0-doc/realm-howto.html#JDBCRealm" rel="noreferrer">documentation</a> and created a database connection using a JNDI resource (jdbc/foo4). This resource works (I use it already in my application to retrieve data). Which does not seem to work, is the linking of a realm with this resource.</p> <p>My configuration file looks like this:</p> <p><strong>src\main\webapp\META-INF\context.xml</strong></p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;Context antiJARLocking="true" path="/my-webapp"&gt; &lt;!-- works! --&gt; &lt;Resource name="jdbc/foo4" type="javax.sql.DataSource" factory="org.apache.tomcat.jdbc.pool.DataSourceFactory" driverClassName="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost:3306/foo4" username="root" password="root" maxActive="8" maxIdle="4" maxWait="10000" auth="Container" /&gt; &lt;!-- Does not seem to work?! --&gt; &lt;Realm className="org.apache.catalina.realm.DataSourceRealm" dataSourceName="jdbc/foo4" userTable="users" userNameCol="user_name" userCredCol="user_pass" userRoleTable="user_roles" roleNameCol="role_name"/&gt; &lt;/Context&gt; </code></pre> <p>In my Standard Deployment Descriptor I entered the following:</p> <p><strong>src\main\webapp\WEB-INF\web.xml</strong></p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"&gt; &lt;security-constraint&gt; &lt;display-name&gt;General Restriction&lt;/display-name&gt; &lt;web-resource-collection&gt; &lt;web-resource-name&gt;Entire Application&lt;/web-resource-name&gt; &lt;description&gt;All resources in this application are protected.&lt;/description&gt; &lt;url-pattern&gt;/*&lt;/url-pattern&gt; &lt;/web-resource-collection&gt; &lt;auth-constraint&gt; &lt;role-name&gt;admin&lt;/role-name&gt; &lt;/auth-constraint&gt; &lt;/security-constraint&gt; &lt;login-config&gt; &lt;auth-method&gt;FORM&lt;/auth-method&gt; &lt;realm-name&gt;Administration Area&lt;/realm-name&gt; &lt;form-login-config&gt; &lt;form-login-page&gt;/login.jsp&lt;/form-login-page&gt; &lt;form-error-page&gt;/error.jsp&lt;/form-error-page&gt; &lt;/form-login-config&gt; &lt;/login-config&gt; &lt;security-role&gt; &lt;role-name&gt;admin&lt;/role-name&gt; &lt;/security-role&gt; &lt;resource-ref&gt; &lt;res-ref-name&gt;jdbc/foo4&lt;/res-ref-name&gt; &lt;res-type&gt;javax.sql.DataSource&lt;/res-type&gt; &lt;res-auth&gt;Container&lt;/res-auth&gt; &lt;/resource-ref&gt; &lt;/web-app&gt; </code></pre> <p>And I used this SQL script to create a sample user:</p> <p><strong>security.sql</strong></p> <blockquote> <p>create table users ( user_name varchar(15) not null primary key, user_pass varchar(15) not null );</p> <p>create table user_roles ( user_name varchar(15) not null,<br> role_name varchar(15) not null, primary key (user_name, role_name) );</p> <p>INSERT INTO users(user_name,user_pass)VALUES('benny','test'); INSERT INTO user_roles(user_name,role_name)VALUES('benny','admin');</p> </blockquote> <p>But I'm not able to login with user "benny" and password "test". I can login with user "tomcat" and password "tomcat" (because it is defined in %CATALINA_HOME%\conf\tomcat-users.xml) but I can not login with my own user from my MySQL database.</p> <p>Of course, my Tomcat server is using a MySQL driver (I put "mysql-connector-java-5.1.9.jar" to %CATALINA_HOME%\lib).</p> <p>I get the following error message when I try to log in:</p> <pre><code>Sep 08, 2012 7:38:55 PM org.apache.catalina.realm.DataSourceRealm open Exception performing authentication javax.naming.NameNotFoundException: Name [jdbc/foo4] is not bound in this Context. Unable to find [jdbc]. </code></pre> <p>Does someone sees the error?</p>
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