我对Java EE很陌生，并且最初是从tomcat开始的。我正在使用PrimeFaces开发一个小型任务应用程序。
该应用程序具有主页和管理区域，该区域由web.xml文件保护。当我根据http://docs.oracle.com/cd/E19159-01/819-3669/bncby/index.html中发布的指南开发登录页面时。尽管我已经正确配置了领域，但是我无法登录。
我在基于Tomcat的JSPWeb应用程序表单身份验证上阅读了这篇文章，这正是我遇到的问题。但是我没有使用Eclipse。 这些是我的编码和XML配置文件。
login.jsp页面
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>Log In</title> </head> <body> <form method="post" action="j_security_check"> <p>Username</p> <input type="text" name="j_username" /> <p>Password</p> <input type="password" name="j_password" /> <p></p> <input type="submit" value="Submit" /> <input type="reset" value="reset" /> </form> </body> </html>
web.xml文件
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> <display-name>ToDoApplication</display-name> <welcome-file-list> <welcome-file>index.xhtml</welcome-file> </welcome-file-list> <!-- JSF Mapping --> <servlet> <servlet-name>Faces Servlet</servlet-name> <servlet-class>javax.faces.webapp.FacesServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>Faces Servlet</servlet-name> <url-pattern>/faces/*</url-pattern> </servlet-mapping> <servlet-mapping> <servlet-name>Faces Servlet</servlet-name> <url-pattern>*.jsf</url-pattern> </servlet-mapping> <servlet-mapping> <servlet-name>Faces Servlet</servlet-name> <url-pattern>*.faces</url-pattern> </servlet-mapping> <servlet-mapping> <servlet-name>Faces Servlet</servlet-name> <url-pattern>*.xhtml</url-pattern> </servlet-mapping> <security-constraint> <display-name>Main Login Auth</display-name> <web-resource-collection> <web-resource-name>Restricted Access</web-resource-name> <url-pattern>/admin/*</url-pattern> </web-resource-collection> <auth-constraint> <role-name>admin</role-name> </auth-constraint> <user-data-constraint> <transport-guarantee>NONE</transport-guarantee> </user-data-constraint> </security-constraint> <security-role> <role-name>management</role-name> </security-role> <security-role> <role-name>sales</role-name> </security-role> <security-role> <role-name>admin</role-name> </security-role> <login-config> <auth-method>FORM</auth-method> <form-login-config> <form-login-page>/login.jsp</form-login-page> <form-error-page>/error.jsp</form-error-page> </form-login-config> </login-config> </web-app>
这是我的tomcat / conf文件夹中的server.xml。
<!-- Note: A "Server" is not itself a "Container", so you may not define subcomponents such as "Valves" at this level. Documentation at /docs/config/server.html --> <Server port="8005" shutdown="SHUTDOWN"> <!-- Security listener. Documentation at /docs/config/listeners.html <Listener className="org.apache.catalina.security.SecurityListener" /> --> <!--APR library loader. Documentation at /docs/apr.html --> <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" /> <!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html --> <Listener className="org.apache.catalina.core.JasperListener" /> <!-- Prevent memory leaks due to use of particular java/javax APIs--> <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" /> <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" /> <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" /> <!-- Global JNDI resources Documentation at /docs/jndi-resources-howto.html --> <GlobalNamingResources> <!-- Editable user database that can also be used by UserDatabaseRealm to authenticate users --> <Resource name="UserDatabase" auth="Container" type="org.apache.catalina.UserDatabase" description="User database that can be updated and saved" factory="org.apache.catalina.users.MemoryUserDatabaseFactory" pathname="conf/tomcat-users.xml" /> </GlobalNamingResources> <!-- A "Service" is a collection of one or more "Connectors" that share a single "Container" Note: A "Service" is not itself a "Container", so you may not define subcomponents such as "Valves" at this level. Documentation at /docs/config/service.html --> <Service name="Catalina"> <!--The connectors can use a shared executor, you can define one or more named thread pools--> <!-- <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" maxThreads="150" minSpareThreads="4"/> --> <!-- A "Connector" represents an endpoint by which requests are received and responses are returned. Documentation at : Java HTTP Connector: /docs/config/http.html (blocking & non-blocking) Java AJP Connector: /docs/config/ajp.html APR (HTTP/AJP) Connector: /docs/apr.html Define a non-SSL HTTP/1.1 Connector on port 8081 --> <Connector port="8081" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" /> <!-- A "Connector" using the shared thread pool--> <!-- <Connector executor="tomcatThreadPool" port="8080" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" /> --> <!-- Define a SSL HTTP/1.1 Connector on port 8443 This connector uses the BIO implementation that requires the JSSE style configuration. When using the APR/native implementation, the OpenSSL style configuration is required as described in the APR/native documentation --> <!-- <Connector port="8443" protocol="org.apache.coyote.http11.Http11Protocol" maxThreads="150" SSLEnabled="true" scheme="https" secure="true" clientAuth="false" sslProtocol="TLS" /> --> <!-- Define an AJP 1.3 Connector on port 8009 --> <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" /> <!-- An Engine represents the entry point (within Catalina) that processes every request. The Engine implementation for Tomcat stand alone analyzes the HTTP headers included with the request, and passes them on to the appropriate Host (virtual host). Documentation at /docs/config/engine.html --> <!-- You should set jvmRoute to support load-balancing via AJP ie : <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1"> --> <Engine name="Catalina" defaultHost="localhost"> <!--For clustering, please take a look at documentation at: /docs/cluster-howto.html (simple how to) /docs/config/cluster.html (reference documentation) --> <!-- <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/> --> <!-- Use the LockOutRealm to prevent attempts to guess user passwords via a brute-force attack --> <Realm className="org.apache.catalina.realm.LockOutRealm"> <!-- This Realm uses the UserDatabase configured in the global JNDI resources under the key "UserDatabase". Any edits that are performed against this UserDatabase are immediately available for use by the Realm. --> <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> </Realm> <!-- Edited by Me while adding support to JDBC database configuration --> <context path="/ToDoApplication" privileged="true" reloadable="true" cookies="true" debug="true"> <Realm className="org.apache.catalina.realm.JDBCRealm" driverName="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost/todo?user=tomcat&password=tomcat" userTable="users" userNameCol="username" userCredCol="password" userRolesTable="user_roles" roleNameCol="rolename"/> </context> <!-- Editing finished --> <Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true"> <!-- SingleSignOn valve, share authentication between web applications Documentation at: /docs/config/valve.html --> <!-- <Valve className="org.apache.catalina.authenticator.SingleSignOn" /> --> <!-- Access log processes all example. Documentation at: /docs/config/valve.html Note: The pattern used is equivalent to using pattern="common" --> <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="localhost_access_log." suffix=".txt" pattern="%h %l %u %t "%r" %s %b" /> </Host> </Engine> </Service> </Server>
这就是我准备数据库表的方式，数据库称为“ todo”。
mysql> SELECT * FROM users; +----------+----------+ | username | password | +----------+----------+ | lal | lal | | lala | lala | | mad | mada | | nalaka | nalaka | +----------+----------+ 4 rows in set (0.00 sec) mysql> SELECT * FROM user_roles; +----------+------------+ | username | rolename | +----------+------------+ | lal | sales | | lala | management | | lala | sales | | mad | admin | | nalaka | sales | +----------+------------+ 5 rows in set (0.00 sec)
我必须使用用户狂登录，因为在我指定的角色为管理员登录到管理区域的web.xml文件。当我分别使用用户名和密码mad和mada时，我将重定向到错误页面。URL像这样附加j_security_check。
http://localhost:8081/ToDoApplication/admin/j_security_check
数据库用户tomcat对todo数据库具有SELECT特权。tomcat指南提到，由于tomcat服务器不会写入数据库，因此用户至少必须具有读取特权。
错误发生在server.xml的“ userRolesTable”中，应为“ userRoleTable”
