struts

HTTP Status 404 - There is no Action mapped for namespace [/] and action nam

struts.xml 文件一定要放到src 目录下面。

struts.xml 注意：

struts-2.3.dtd  版本号要与jar包中的对应！

 1 <?xml version="1.0" encoding="UTF-8" ?>
 2 <!DOCTYPE struts PUBLIC
 3     "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
 4     "http://struts.apache.org/dtds/struts-2.3.dtd">
 5 <struts>
 6     <package name="default" extends="struts-default">
 7         <action name="register" class="RegisterAction">
 8             <result name="success">welcome.jsp</result>
 9         </action>
10     </package>
11 </struts>

web.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
 5     http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
 6     <filter>
 7         <filter-name>Struts2Filter</filter-name>
 8         <filter-class>
 9             org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter   // 注意这一句，这是新的写法，有的教程过时了。
10         </filter-class>
11     </filter>
12     <filter-mapping>
13         <filter-name>Struts2Filter</filter-name>
14         <url-pattern>/*</url-pattern>
15     </filter-mapping>
16     <welcome-file-list> 
17         <welcome-file>index.jsp</welcome-file>
18     </welcome-file-list>
19 </web-app>

校验器代码：

 1 <?xml version="1.0" encoding="UTF-8"?>
 2         
 3 <!DOCTYPE validators PUBLIC  "-//OpenSymphony Group//XWork Validator 1.0.2//EN"  
 4  "//www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">
 5 
 6 <!-- START SNIPPET: validators-default -->
 7 <validators>
 8 
 9     <field name="user.username" type="requiedstring">
10         <field-validator>
11             <param name="trim">true</param>
12             <message>用户名不能为空</message>
13         </field-validator>
14 
15     </field>
16     <field name="user.password">
17         <field-validator type="requiredstring">
18             <param name="min">6</param>
19             <param name="min">10</param>
20             <message>必须在长度是6~10之间</message>
21         </field-validator>
22       
23         <field-validator   type="regex">
24         <param   name="expression"><![CDATA[(w{6,16})]]></param>
25             <message>用户名输入不合法，必须为长度在6~16中间的数字或字母</message>
26         </field-validator>
27          
28     </field>
29 
30 
31 </validators>

User.hbm.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
         "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
    <class name="com.ssh.beans.User" table="user">
        <id name="id" column="userId" type="java.lang.long">
            <generator class="native"></generator> 
        </id>
        <property name="username" column="username" type="java.lang.String" />
        <property name="password" column="password" type="java.lang.String"/>
        <property name="gender" column="gender" type="java.lang.Interger" />
    </class>
    
</hibernate-mapping>

Hibernate.cfg.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <!DOCTYPE hibernate-configuration PUBLIC
 3         "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
 4         "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
 5 <hibernate-configuration>
 6     <session-factory>
 7     
 8      <property name="hibernate.connection.url">
 9             jdbc:mysql://localhost:3306/test
10         </property>
11         <property name="hibernate.connection.driver_class">
12             com.mysql.jdbc.Driver
13         </property>
14         <property name="hibernate.connection.username">
15             root
16         </property>
17         <property name="hibernate.connection.password">
18             qduwky
19         </property>
20         <property name="hibernate.dialect">
21             org.hibernate.dialect.MySQLDialect
22         </property>
23         <property name="show_sql">
24             false
25         </property>
26         <mapping resource="com.ssh.beans/User.hbm.xml" />
27     </session-factory>
28 </hibernate-configuration>