记住所有导的包都在org.springframework.web.servlet.mvc.annotation.下而不是
org.springframework.web.protlet.mvc.annotation包下。这两个得看清楚！
我的applicationContext.xml配置:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd ">
<!-- 对web包中的所有类进行扫描，以完成Bean创建和自动依赖注入的功能 -->
<context:component-scan base-package="cn.jnti"></context:component-scan>
<!-- 支持spring3.0新的mvc注解 -->
<mvc:annotation-driven />
<!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射 -->
<!-- 注意导包时不要导成protlet,而是servlet包下 -->
<bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"></bean>
<!-- 对模型视图名称的解析，即在模型视图名称添加前后缀 -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:suffix=".jsp"></bean>
<bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="cacheSeconds" value="0"></property>
<property name="messageConverters">
<list>
<!-- spring使用jackson实现json输出 -->
<bean
class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"></bean>
</list>
</property>
</bean>
<!-- 使用properties配置连接数据库 -->
<bean
class="org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer">
<property name="locations">
<list>
<!-- 配置文件的位置 -->
<value>classpath:jdbc.properties</value>
</list>
</property>
</bean>
<!-- 配置c3p0数据源 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<!-- 指定JDBC驱动 -->
<property name="driverClass" value="${driverClass}"></property>
<property name="jdbcUrl" value="${jdbcUrl}"></property>
<property name="user" value="${user}"></property>
<property name="password" value="${password}"></property>
</bean>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="configLocation">
<value>classpath:configuration.xml</value>
</property>
</bean>
<bean id="template" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg index="0" ref="sqlSessionFactory"></constructor-arg>
</bean>
</beans>
我的configuration.xml配置：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<settings>
<setting name="logImpl" value="LOG4J" />
</settings>
<!-- <environments default="development"> <environment id="development">
<transactionManager type="JDBC" /> <dataSource type="POOLED"> <property name="driver"
value="oracle.jdbc.driver.OracleDriver" /> <property name="url" value="jdbc:oracle:thin:@127.0.0.1:1521:orcl"
/> <property name="username" value="scott" /> <property name="password" value="123"
/> </dataSource> </environment> </environments> -->
<mappers>
<mapper resource="cn/jbit/bean/EmpMapper.xml" />
</mappers>
</configuration>
我的EmpMapper：
package cn.jnti.bean;
import java.util.List;
public interface EmpMapper {
public List<Emp> selectAll();
public Emp selectEmp(int empno);
public List<Emp> selectEmpByEmp(Emp emp);
}
我的EmpMapper.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.jnti.bean.EmpMapper">
<cache eviction="FIFO" flushInterval="60000" size="512" readOnly="true" />
<select id="selectEmp" parameterType="cn.jnti.bean.Emp" resultType="cn.jnti.bean.Emp">
select * from emp where empno= #{empno}
</select>
<select id="selectEmpByEmp" parameterType="cn.jnti.bean.Emp" resultType="cn.jnti.bean.Emp">
select * from emp where 1=1
<if test="empno !=null">
and empno= #{empno}
</if>
<if test="ename !=null">
and ename like #{ename}
</if>
</select>
<select id="selectAll" resultType="cn.jnti.bean.Emp">
select * from emp
</select>
</mapper>
我的UserController：
package cn.jnti.controller;
import java.util.List;
import javax.annotation.Resource;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import cn.jnti.bean.Emp;
import cn.jnti.service.EmpService;
@Controller
@RequestMapping("/user")
public class UserController {
@Resource(name="empservice")
private EmpService service;
@RequestMapping("/list")
public ModelAndView getAllUser(){
ModelAndView mav=new ModelAndView();
mav.setViewName("/list");
List<Emp> list=service.getAll();
mav.addObject("list", list);
return mav;
}
}
我的EmpDao:
package cn.jnti.dao;
import java.util.List;
import cn.jnti.bean.Emp;
public interface EmpDao {
List<Emp> getAll();
Emp getById(Integer id);
List<Emp> selectEmpByEmp(Emp emp);
}
我的EmpDaoImpl:
package cn.jnti.dao;
import java.util.List;
import javax.annotation.Resource;
import org.mybatis.spring.SqlSessionTemplate;
import org.springframework.stereotype.Repository;
import cn.jnti.bean.Emp;
import cn.jnti.bean.EmpMapper;
@Repository("empdao")
public class EmpDaoImpl implements EmpDao {
@Resource(name="template")
private SqlSessionTemplate template;
@Override
public List<Emp> getAll() {
EmpMapper mapper = template.getMapper(EmpMapper.class);
return mapper.selectAll();
}
@Override
public Emp getById(Integer id) {
EmpMapper mapper = template.getMapper(EmpMapper.class);
return mapper.selectEmp(id);
}
@Override
public List<Emp> selectEmpByEmp(Emp emp) {
EmpMapper mapper = template.getMapper(EmpMapper.class);
return template.getMapper(EmpMapper.class).selectEmpByEmp(emp);
}
}
我的EmpService：
package cn.jnti.service;
import java.util.List;
import cn.jnti.bean.Emp;
public interface EmpService {
List<Emp> getAll();
}
我的EmpServiceImpl：
package cn.jnti.service;
import java.util.List;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import cn.jnti.bean.Emp;
import cn.jnti.dao.EmpDao;
@Service("empservice")
public class EmpServiceImpl implements EmpService{
@Resource(name="empdao")
private EmpDao dao;
@Override
public List<Emp> getAll() {
return dao.getAll();
}
}
我的web.xml:
<?xml version="1.0" encoding="UTF-8"?><!--
<web-app version="3.0"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<display-name></display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>dispatcherservlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherservlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
-->
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<display-name></display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>dispatcherservlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherservlet</servlet-name>
<url-pattern>/</url-pattern> //此处不是/*
</servlet-mapping>
</web-app>
我的log4j.properties：
log4j.rootLogger=DEBUG, Console
#Console
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=%d [%t] %\u20105p [%c] \u2010 %m%n
log4j.logger.java.sql.ResultSet=INFO
log4j.logger.org.apache=INFO
log4j.logger.java.sql.Connection=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG
我的jdbc.properties：
driverClass=oracle.jdbc.driver.OracleDriver
jdbcUrl=jdbc:oracle:thin:@localhost:1521:orcl
user=scott
password=orcl
最后是我用的jar包截图：