Question

我正在尝试使用hibernate映射mysql映射。我在jsp页面中给出了一个映射到tweetAction类的putMessage()方法的动作。我的问题是映射适用于userAction类的方法。但是当我添加tweetAction课程时，它根本不起作用。我只想让这个流进入putMessage()这就是为什么我输入一个SysOut方法只是为了在控制台上显示它

这是我的struts.xml：

<!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="hibernate-default">

        <action name="login" method="isAuthentic" class="com.vaannila.web.UserAction">
            <result name="success">/home.jsp</result>
            <result name="failure">/failure.jsp</result> 
        </action>

        <action name="addUser" method="add" class="com.vaannila.web.UserAction">
            <result name="success" type="redirect">listUser</result>
        </action>
        <action name="listUser" method="list" class="com.vaannila.web.UserAction">
            <result name="success">/Login.jsp</result>
        </action>

        <action name="searchUser" method="search" class="com.vaannila.web.UserAction">
            <result name="success">/display.jsp</result>
        </action>


        <action name="message" method="putMessage" class="com.vaannila.web.TweetAction">
            <result name="success" >/Login.jsp</result>
        </action>

    </package>
</struts>

这是我的TweetAction.java：

package com.vaannila.web;

import java.util.ArrayList;
import java.util.List;

import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
import com.vaannila.dao.TweetDAO;
import com.vaannila.dao.TweetDAOImpl;
import com.vaannila.dao.UserDAO;
import com.vaannila.dao.UserDAOImpl;
import com.vaannila.domain.Tweet;
import com.vaannila.domain.User;

public class TweetAction extends ActionSupport implements ModelDriven<Tweet> {

    private static final long serialVersionUID = -6659925652584240539L;

    private Tweet tweet = new Tweet();
    private User user = new User();
    private List<Tweet> tweetList = new ArrayList<Tweet>();
    private TweetDAO tweetDAO = new TweetDAOImpl();
    private boolean isAuthentic = false;
    public Tweet getModel() {
        // TODO Auto-generated method stub
        return null;
    }

    public String putMessage()
    {
        System.out.println("inside putMessage");
        return SUCCESS;
    }

    public String tweet()
    {
        return SUCCESS;
    }
}

这是我的hibernate.cfg.xml：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost/twitter</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.connection.password">root</property>
        <property name="connection.pool_size">1</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="show_sql">true</property>
        <property name="hbm2ddl.auto">update</property>
        <mapping class="com.vaannila.domain.User" />
        <mapping class="com.vaannila.domain.Tweet" />
    </session-factory>
</hibernate-configuration>

这是我的样本Home.jsp

<html>
<body>
<h2>What's on your mind?</h2>
<s:form action="message">
        <s:textarea name="message" rows="4" cols="75"  Placeholder="Enter here..." />
    <s:submit  />  <!-- type="image" src="tweet.jpg" align="center" -->
</s:form>

</body>
</html>

struts.xml中：

    <action name="login" method="isAuthentic" class="com.vaannila.web.UserAction">
        <result name="success">/temp.jsp</result>
        <result name="failure">/failure.jsp</result> 
    </action>

    <action name="addUser" method="add" class="com.vaannila.web.UserAction">
        <result name="success" type="redirect">listUser</result>
    </action>
    <action name="listUser" method="list" class="com.vaannila.web.UserAction">
        <result name="success">/Login.jsp</result>
    </action>

    <action name="searchUser" method="search" class="com.vaannila.web.UserAction">
        <result name="success">/display.jsp</result>
    </action>


    <action name="message" method="putMessage" class="com.vaannila.web.TweetAction">
        <result name="success">/temp.jsp</result>
    </action>

</package>

谁能告诉我我做错了什么？

Answer 1

Java Struts call another action after executed action finsihed

检查上面

你应该尝试<result type="redirectAction">/listTweet</result>别忘了将/放在动作名称

之前

Answer 2

在TweetAction中的getModel（）方法中。返回值为null，我认为这是错误的。因为ModelInterceptor无法将数据封装到null实体中。

修饰：

public Tweet getModel()
{
return tweet;
}

struts 2 xml映射不适用于不同的类？

2 个答案: