【发布时间】：2014-12-10 07:01:56
【问题描述】：
我正在尝试学习 Struts2，我使用了一个点击 action 的视图页面，action 类使用了一个编写 getter setter 方法的 bean，并且该 action 也使用了一个编写连接的 dao。我想提到我使用的是jboss v5.0和eclipse，我已经添加了所有的jar文件。
现在，当我尝试运行此应用程序时，欢迎 jsp 页面正常点击，然后单击提交按钮显示以下错误：
没有为命名空间/控制器和动作名称映射动作
我正在放置我的代码和目录结构。我试过使用namespace="/"
<result name="SUCCESS">/success.jsp</result>，还是不行
passing
+JAX-WS Web Services
+Deployment Descriptor:Passing
-Java Resources
-src
-controller
-TestAction.java
-TestAction
-execute(HttpServletRequest request , HttpServletResponse response) : String
-model
-TestBean.java
-TestBean
-age
-ocation
-name
-getAge() :String
-getName() :String
-getLocation() :String
-setAge(String) : void
-setName(String) : void
-getlocation(String) : void
-UserDao.java
- UserDao
-Logincheck() :Connection
registration.jsp
web.xml
<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>Passing</display-name>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>registration.jsp</welcome-file>
</welcome-file-list>
</web-app>
struts.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<package name="default" extends="sturts-default">
<action name="TestAction" class="controller.TestAction">
<result name="SUCCESS">/success.jsp</result>
</action>
</package>
</struts>
成功.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<center> Welcome, Data successfully inserted</center>
</body>
</html>registration.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<%@ taglib uri="/struts-tags" prefix="s"/%>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<s:form action="TestAction" method="post" >
<s:textfield name="Name" label="Name"/>
<s:textfield name="Age" label="Age"/>
<s:textfield name="Location" label="Location"/>
<s:submit label="Submit"></s:submit>
</s:form>
</body>
</html>
TestAction.java
package controller;
import java.sql.Connection;
import java.sql.PreparedStatement;
import com.opensymphony.xwork2.ActionSupport;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import model.TestBean;
import model.UserDao;
import org.apache.struts2.ServletActionContext;
public class TestAction extends ActionSupport{
public String execute(HttpServletRequest request , HttpServletResponse response) throws Exception
{
String Name = request.getParameter("Name");
String Age = request.getParameter("Age");
String Location = request.getParameter("Location");
TestBean bean = new TestBean();
bean.setName(Name);
bean.setAge(Age);
bean.setLocation(Location);
UserDao obj = new UserDao();
Connection x= obj.Logincheck();
if(x!=null)
{
PreparedStatement ps= x.prepareStatement("insert into Registration values(?,?,?)");
ps.setString(1, bean.getName());
ps.setString(2, bean.getAge());
ps.setString(3, bean.getLocation());
int i = ps.executeUpdate();
System.out.println("The value of i =" +i);
if(i>0)
{
return SUCCESS;
}
}
return null;
}
}
TestBean.java
package model;
public class TestBean {
String name;
String age;
String location;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
public String getLocation() {
return location;
}
public void setLocation(String location) {
this.location = location;
}
}
UserDao.java
package model;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
public class UserDao {
public Connection Logincheck()
{
Connection con=null;
try
{
try
{
Class.forName("oracle.jdbc.driver.OracleDriver");
}
catch(ClassNotFoundException e)
{
e.printStackTrace();
}
con= DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:XE", "username", "password");
if(con!=null)
{
return con;
}
}
catch(Exception e)
{
e.printStackTrace();
}
return null;
}
}就是这样。
【问题讨论】：
-
不相关，但是
execute方法做的太多了，在不同的抽象层次上操作。这不是什么大不了的事，但 IMO 这是一个坏习惯。 -
请澄清您的具体问题或添加其他详细信息以准确突出您的需要。正如目前所写的那样，很难准确地说出你在问什么。请参阅“如何提问”页面以获得澄清此问题的帮助。