2 qq 34354948 qq_34354948 于 2016.03.19 23:17 提问

ssh注解,获取不到server。

web.xml
<?xml version="1.0" encoding="UTF-8"?>
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_3_0.xsd" version="3.0">

sshTest1
<!-- 配置Spring的监听器,用于初始化ApplicationContext对象 -->



org.springframework.web.context.ContextLoaderListener





contextConfigLocation

classpath:applicationContext*.xml


struts2
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
<!-- 自动扫描action -->



actionPackages

com.lovo


struts2
/*



login.jsp

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd ">

<!--建立数据源 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
    <!-- SQL Server数据驱动 -->
    <property name="driverClassName" value="com.microsoft.sqlserver.jdbc.SQLServerDriver">
    </property>
    <!-- 数据库地址 -->
    <property name="url"
        value="jdbc:sqlserver://localhost:1433;   DatabaseName=sshTest">
    </property>
    <property name="username" value="sa"></property>
    <property name="password" value="123"></property>
</bean>

<bean id="sessionFactory"
    class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
    <property name="dataSource">
        <ref bean="dataSource" />
    </property>
    <property name="hibernateProperties">
        <props>
             <!--配置Hibernate的方言-->  
            <prop key="hibernate.dialect">
                org.hibernate.dialect.SQLServerDialect
            </prop>
             <!--格式化输出sql语句--> 
            <prop key="hibernate.show_sql">true</prop>    
            <prop key="hibernate.format_sql">true</prop>      
            <prop key="hibernate.use_sql_comments">false</prop>   
        </props>
    </property>

    <!--自动扫描实体 -->    
    <property name="packagesToScan"  value="com.lovo.*" />  

</bean>
    <!-- 使用 annotation -->  
<context:annotation-config />  
<!-- 自动扫描与装配bean -->      
<context:component-scan base-package="com.lovo"></context:component-scan>

<!-- 采用注释的方式配置 aop -->


<!-- 用注解来实现事务管理 -->










tx:attributes








/tx:attributes
/tx:advice

struts.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.1//EN"
"http://struts.apache.org/dtds/struts-2.1.dtd">

<constant name="struts.devMode" value="true" />    
<!-- 将对象交给spring管理 -->    
<constant name="struts.objectFactory" value="spring" />    
<!-- 指定资源编码类型 -->    
<constant name="struts.i18n.encoding" value="UTF-8" />     
<!-- 指定每次请求到达,重新加载资源文件 -->    
<constant name="struts.i18n.reload" value="false" />    
<!-- 指定每次配置文件更改后,自动重新加载 -->    
<constant name="struts.configuration.xml.reload" value="false" />    
<!-- 默认后缀名 -->    
<constant name="struts.action.extension" value="action," />       

action
package com.lovo.action;

import javax.annotation.Resource;

import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Namespace;
import org.apache.struts2.convention.annotation.ParentPackage;
import org.apache.struts2.convention.annotation.Result;
import org.springframework.stereotype.Controller;

import com.lovo.bean.Emp;
import com.lovo.service.EmpService;
import com.opensymphony.xwork2.ActionSupport;

@Namespace("/")
@ParentPackage("struts-default")
@Controller
public class EmpAction extends ActionSupport {
@Resource()

public Emp emp ;
private EmpService empService ;

@ Action(value = "empAction", results = {
            @Result(name = "success", location = "/index.jsp"),
            @Result(name = "index", location = "/login.jsp")})
 public String add() {  
        try {  
            empService.add(emp);          
        } catch (Exception e) {  
            e.printStackTrace();  
            return "index";  
        }  
        return "success";  

    }


public Emp getEmp() {
    return emp;
}




public void setEmp(Emp emp) {
    this.emp = emp;
}




public EmpService getEmpService() {
    return empService;
}


public void setEmpService(EmpService empService) {
    this.empService = empService;
}     

}
bean

package com.lovo.bean;

import java.io.Serializable;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

@Entity(name="t_emp")
public class Emp implements Serializable {
@Id

@GeneratedValue(strategy = GenerationType.IDENTITY)
private int id;
@Column(name = "pk_name")

private String name;
@Column(name = "fk_age")
private int age;

public Emp(){}

public Emp(int id, String name, int age) {
    super();
    this.id = id;
    this.name = name;
}
public int getId() {
    return id;
}
public void setId(int id) {
    this.id = id;
}
public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}
public int getAge() {
    return age;
}
public void setAge(int age) {
    this.age = age;
}

}
dao
package com.lovo.dao;

import java.util.List;

import javax.annotation.Resource;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Repository;

import com.lovo.bean.Emp;

@Repository("empDao")
public class EmpDao {
@Resource(name="sessionFactory")

private SessionFactory sessionFactory;

public void add(Emp emp){
    Session session = sessionFactory.getCurrentSession();  
    session.save(emp);  
}

public List  findAll(){


    return null;
}


public SessionFactory getSessionFactory() {
    return sessionFactory;
}

public void setSessionFactory(SessionFactory sessionFactory) {
    this.sessionFactory = sessionFactory;
} 

}
package com.lovo.service;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.lovo.bean.Emp;
import com.lovo.dao.EmpDao;

@Service("empService")
@Transactional

public class EmpService {
@Resource(name="empDao")
private EmpDao empDao;

public EmpService(){}
 public void add(Emp emp) {
     empDao.add(emp);  
    }
public EmpDao getEmpDao() {
    return empDao;
}
public void setEmpDao(EmpDao empDao) {
    this.empDao = empDao;
}  

}
action 访问server的时候,没有访问到server获取数据报空指针异常。
高手帮我看看哪里错了。 。。

1个回答

devmiao
devmiao   Ds   Rxr 2016.03.19 23:53
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