准备
工具:idea , maven ,mysql, jdk
数据库准备
CREATE TABLE `t_user` (
`id` bigint(10) NOT NULL AUTO_INCREMENT COMMENT '用户id',
`username` varchar(10) NOT NULL COMMENT '用户名',
`password` varchar(200) NOT NULL COMMENT '密码',
`sex` varchar(2) NOT NULL COMMENT '性别',
`name` varchar(20) DEFAULT NULL COMMENT '姓名',
`phone` varchar(20) DEFAULT NULL COMMENT '电话',
`status` int(2) DEFAULT '1' COMMENT '状态0,锁定,1正常',
`pwd_error_count` int(11) NOT NULL DEFAULT '0' COMMENT '密码错误次数',
`create_sys_user` bigint(11) DEFAULT NULL COMMENT '创建人id',
`create_name` varchar(20) DEFAULT NULL COMMENT '创建者姓名',
`create_time` datetime DEFAULT NULL COMMENT '创建时间',
`update_sys_user` bigint(20) DEFAULT NULL COMMENT '更新者id',
`update_name` varchar(20) DEFAULT NULL COMMENT '更新者姓名',
`update_time` datetime DEFAULT NULL COMMENT '更新时间',
PRIMARY KEY (`id`),
UNIQUE KEY `username` (`username`)
) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=utf8 COMMENT='系统用户表';
idea 创建一个maven项目
完成后如图:
分别在src-main 下新建 Java,resources文件夹
建成后如图结构:
分别将java,和resources文件夹,转换文件夹类型:
右击Java如图:
右击resources如图:
成功后结构如图:
搭建ssm,引入pom.xml
- 引入pom文件
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>cn.gpyh</groupId>
<artifactId>zzr-ssm</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>zzr-ssm Maven Webapp</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
<junit.version>4.10</junit.version>
<spring.version>4.1.3.RELEASE</spring.version>
<mybatis.version>3.2.8</mybatis.version>
<mybatis.spring.version>1.2.2</mybatis.spring.version>
<mybatis.paginator.version>1.2.15</mybatis.paginator.version>
<mysql.version>5.1.32</mysql.version>
<slf4j.version>1.6.4</slf4j.version>
<jackson.version>2.4.2</jackson.version>
<druid.version>1.0.9</druid.version>
<httpclient.version>4.3.5</httpclient.version>
<jstl.version>1.2</jstl.version>
<servlet-api.version>2.5</servlet-api.version>
<jsp-api.version>2.0</jsp-api.version>
<joda-time.version>2.5</joda-time.version>
<commons-lang3.version>3.3.2</commons-lang3.version>
<commons-io.version>1.3.2</commons-io.version>
<springfox-swagger2.version>2.5.0</springfox-swagger2.version>
<pagehelper.version>4.1.6</pagehelper.version>
<poi.version>3.12</poi.version>
<poi-ooxml.version>3.12</poi-ooxml.version>
<spring-data-redis.version>1.6.1.RELEASE</spring-data-redis.version>
<jedis.version>2.7.3</jedis.version>
</properties>
<dependencies>
<!-- 单元测试 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<!-- 连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- Spring测试 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- Mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>${mybatis.spring.version}</version>
</dependency>
<!-- MySql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency>
<!-- 连接池 -->
<dependency>
<groupId>com.jolbox</groupId>
<artifactId>bonecp-spring</artifactId>
<version>0.8.0.RELEASE</version>
</dependency>
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>
<!-- JSP相关 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>${jstl.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>${servlet-api.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<version>${jsp-api.version}</version>
<scope>provided</scope>
</dependency>
<!-- Apache工具组件 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>${commons-lang3.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-io</artifactId>
<version>${commons-io.version}</version>
</dependency>
<!-- Jackson Json处理工具包 -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<!--分页助手 pagehelper -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>${pagehelper.version}</version>
</dependency>
<!-- apache shiro 核心 -->
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-core</artifactId>
<version>1.3.2</version>
</dependency>
<!-- shiro的web整合 -->
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-web</artifactId>
<version>1.3.2</version>
</dependency>
<!-- shiro的aop代理 -->
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-aspectj</artifactId>
<version>1.3.2</version>
</dependency>
<!-- shiro spring整合 -->
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-spring</artifactId>
<version>1.3.2</version>
</dependency>
<!-- poi -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>${poi.version}</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>${poi-ooxml.version}</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.6</version>
</dependency>
<!--redis相关-->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>${spring-data-redis.version}</version>
</dependency>
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>${jedis.version}</version>
</dependency>
<!-- ehcache的缓存框架 -->
<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache-core</artifactId>
<version>2.6.10</version>
</dependency>
<!-- spring整合第三方框架的 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- shiro整合ehcache -->
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-ehcache</artifactId>
<version>1.3.2</version>
</dependency>
<!-- quartz核心 -->
<dependency>
<groupId>org.quartz-scheduler</groupId>
<artifactId>quartz</artifactId>
<version>2.2.3</version>
</dependency>
<dependency>
<groupId>org.quartz-scheduler</groupId>
<artifactId>quartz-jobs</artifactId>
<version>2.2.3</version>
</dependency>
<dependency>
<groupId>com.aliyun</groupId>
<artifactId>aliyun-java-sdk-core</artifactId>
<version>4.0.6</version>
</dependency>
<dependency>
<groupId>com.aliyun</groupId>
<artifactId>aliyun-java-sdk-dysmsapi</artifactId>
<version>1.1.0</version>
</dependency>
</dependencies>
</project>
这里虽然现在用不到这么多的jar但是,一次引入完了后续陆续会用。
如果不想引用这么多,指引下面这些足够
<!--
主要包含六部分内容:
springmvc子容器的依赖(包含了spring容器的依赖),以及数据处理的依赖;
mybatis以及和spring容器整合的依赖
数据库相关依赖(数据库驱动,数据库连接池)
事务相关依赖(jdbc和AOP联盟)
JSTL相关依赖以及测试工具依赖
日志依赖
-->
<dependencies>
<!-- 配置springmvc相关的依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.1.3.RELEASE</version>
</dependency>
<!-- 配置controller处理数据的jackson -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.8.7</version>
</dependency>
<!-- 配置mybatsi依赖 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.2.8</version>
</dependency>
<!-- 配置spring和mybatis的依赖包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<!-- 配置mysql数据库驱动 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.41</version>
</dependency>
<!-- 配置c3p0数据库连接池 -->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1</version>
</dependency>
<!-- 配置事物相关 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.1.3.RELEASE</version>
</dependency>
<!-- 配置事务的切面依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>4.1.5.RELEASE</version>
</dependency>
<!-- 配置测试工具 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.10</version>
</dependency>
<!-- 解析jsp页面需要的依赖 -->
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>jstl-api</artifactId>
<version>1.2</version>
</dependency>
<!-- 添加日志的依赖 -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.6.4</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.6.4</version>
</dependency>
</dependencies>
修改webapp-WEB-INFO 下的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"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="MyWebApp" version="2.5">
<!--设置配置文件的读取位置-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/applicationContext.xml</param-value>
</context-param>
<!-- Spring的ApplicationContext的加载 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 编码过滤器,以UTF8编码,解决POST乱码问题 -->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--配置springMvc-->
<servlet>
<servlet-name>springMvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 初始化参数,指定SpringMVC的配置文件路径,不再找WEB-INF下的默认配置 -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/springMvc-servlet.xml</param-value>
</init-param>
<!-- 0:第一次被调用时创建; 1:Tomcat启动时就创建 -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springMvc</servlet-name>
<!-- 拦截除了JSP以外的所有路径-->
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--指定项目启动后首页-->
<!-- <welcome-file-list>
<welcome-file>/WEB-INF/views/hello.jsp</welcome-file>
</welcome-file-list>-->
</web-app>
在resources下创建配置文件applicationContext.xml 和 springMvc-servlet.xml
applicationContext.xml 是 spring的主配置文件 ,项目启动后加载
springMvc-servlet.xml 是mvc 的置文件
applicationContext-tx.xml 是 事务的配置
新建文件:
applicationContext.xml内容
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">
<!-- 配置注解扫描器 @Service -->
<context:component-scan base-package="com.example.service"></context:component-scan>
<!-- 加载资源文件 -->
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<!-- 配置资源文件 -->
<property name="locations">
<list>
<value>classpath:jdbc.properties</value>
<!--<value>classpath:redis.properties</value>-->
</list>
</property>
</bean>
<!-- 配置连接池,数据源 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass" value="${jdbc.driver}"></property>
<property name="jdbcUrl" value="${jdbc.url}"></property>
<property name="user" value="${jdbc.mysqluser}"></property>
<property name="password" value="${jdbc.mysqlpassword}"></property>
</bean>
<!--
sqlSession工厂 mapper的接口配置
-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 加载全局的配置文件 -->
<property name="configLocation" value="classpath:mybatis/mybatis-config.xml"></property>
<!-- 配置mapper的扫描,找到所有的mapper.xml映射文件。 -->
<property name="mapperLocations" value="classpath:mybatis/mapper/*.xml"></property>
<!-- 配置类型别名 -->
<property name="typeAliasesPackage" value="com.example.entity"></property>
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--配置mapper接口所在路径,扫描路径下的所有的mapper接口 如果配置多个mapper的包,使用逗号进行分割
-->
<property name="basePackage" value="com.example.dao" />
</bean>
<!-- <import resource="applicationContext-redis.xml"/>
<import resource="applicationContext-shiro.xml"/>
<import resource="applicationContext-cache.xml"/>-->
<import resource="applicationContext-tx.xml"/>
<!-- <import resource="applicationContext.quartz.xml"/>-->
<import resource="springMvc-servlet.xml"/>
</beans>
springMvc-servlet.xml 内容:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
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" xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 配置注解驱动,会默认的加载上面的两个 HandlerMapping, HandlerAdapter 设置返回值编码-->
<mvc:annotation-driven>
<mvc:message-converters register-defaults="true">
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<property name="supportedMediaTypes" value="text/html;charset=UTF-8"></property>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
<!-- 开启注解扫描 -->
<context:component-scan base-package="com.example.controller"></context:component-scan>
<!-- 视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 前缀 -->
<property name="prefix" value="/WEB-INF/views/"></property>
<!-- 后缀 -->
<property name="suffix" value=".jsp"></property>
</bean>
<!-- 解决静态资源被拦截的问题 -->
<mvc:default-servlet-handler/>
</beans>
applicationContext-tx.xml 内容:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">
<!-- 定义事务管理器 :一个请求可能会涉及多次写操作(增删改),
要保证一个请求的原子性(要么全部成功,要么全部失败,所以需要保证一个请求的所有写操作处于同一个事务)-->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 定义事务策略 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!--所有以query开头的方法都是只读的 -->
<tx:method name="query*" read-only="true" />
<tx:method name="get*" read-only="true" />
<tx:method name="find*" read-only="true" />
<tx:method name="select*" read-only="true" />
<!--其他方法使用默认事务策略 -->
<tx:method name="*" />
</tx:attributes>
</tx:advice>
<aop:config>
<!--pointcut元素定义一个切入点,execution中的第一个星号 用以匹配方法的返回类型,
这里星号表明匹配所有返回类型。 com.abc.dao.*.*(..)表明匹配cn.itctest.mybatisatis.service包下的所有类的所有
方法 -->
<aop:pointcut id="myPointcut" expression="execution(* com.example.service.*.*(..))" />
<!--将定义好的事务处理策略应用到上述的切入点 -->
<aop:advisor advice-ref="txAdvice" pointcut-ref="myPointcut" />
</aop:config>
</beans>
在resources 添加日志 log4j.properties
log4j.rootLogger=DEBUG,A1
log4j.logger.org.test.mybatis=DEBUG
log4j.appender.A1=org.apache.log4j.ConsoleAppender
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss,SSS} [%t] [%c]-[%p] %m%n
配置数据源:在resources下编写 jdbc.properties
jdbc.properties 内容:
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/youDB?useUnicode=true&characterEncoding=utf-8
jdbc.mysqluser=root
jdbc.mysqlpassword=123
配置mybatis
在resources下创建mybatis 文件夹,在mybatis下创建mapper文件夹放我们的mapper.xml文件,在mybatis下编写mybatis-config.xml
mybatis-config.xml 内容:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
PUBLIC "-//test.mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<settings>
<!-- 开启驼峰匹配 -->
<setting name="mapUnderscoreToCamelCase" value="true"/>
</settings>
<!-- 分页助手 -->
<plugins>
<!-- com.github.pagehelper为PageHelper类所在包名 -->
<plugin interceptor="com.github.pagehelper.PageHelper">
<!-- 数据库方言 -->
<property name="dialect" value="mysql"/>
<!-- 设置为true时,使用RowBounds分页会进行count查询 会去查询出总数 -->
<property name="rowBoundsWithCount" value="true"/>
</plugin>
</plugins>
</configuration>
编写数据:在src-main-java-com-example下分别创建controller,service,dao,entity文件夹,编写mapper.xml
编写controller:
package com.example.controller;
import com.example.entity.User;
import com.example.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
/**
* @author zhaozeren
* @version 1.0
*/
@Controller
@RequestMapping("user")
public class UserController {
@Autowired
private UserService userService;
@RequestMapping("getUser")
@ResponseBody
public User getUser() {
return userService.getUser();
}
}
编写service:
package com.example.service;
import com.example.dao.UserDao;
import com.example.entity.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
/**
* @author zhaozeren
* @version 1.0
*/
@Service
public class UserService {
@Autowired
private UserDao userDao;
public User getUser() {
return userDao.getUserById(3L);
}
}
编写dao:
package com.example.dao;
import com.example.entity.User;
/**
* @author zhaozeren
* @version 1.0
*/
public interface UserDao {
User getUserById(long id);
}
编写mapper:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//test.mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.example.dao.UserDao">
<resultMap id="BaseResultMap" type="com.example.entity.User">
<id column="id" property="id" jdbcType="BIGINT"/>
<result column="username" property="username" jdbcType="VARCHAR"/>
<result column="password" property="password" jdbcType="VARCHAR"/>
<result column="sex" property="sex" jdbcType="VARCHAR"/>
<result column="name" property="name" jdbcType="VARCHAR"/>
<result column="phone" property="phone" jdbcType="VARCHAR"/>
<result column="status" property="status" jdbcType="INTEGER"/>
</resultMap>
<select id="getUserById" resultMap="BaseResultMap">
select * from t_user where id=#{id,jdbcType=BIGINT}
</select>
</mapper>
最终结构:
测试
添加Tomcat
添加war包
然后apply应用配置
启动测试
dug启动
访问 http://localhost:8007/user/getUser