最新SSM框架搭建详细教程

2020/7/2 10:02:18 人评论 次浏览 分类:学习教程

前言

使用框架的版本:
Spring 4.0.2 RELEASE
Spring MVC 4.0.2 RELEASE
MyBatis 3.2.6

新建maven java web项目

使用eclipse创建maven项目,项目的最终结构以及文件如下:
ssm框架搭建

pom文件内容如下

<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.ssm.edu</groupId>
  <artifactId>ssm</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>ssm Maven Webapp</name>
  <url>http://maven.apache.org</url>
 <properties>  
        <!-- spring版本号 -->  
        <spring.version>4.0.2.RELEASE</spring.version>  
        <!-- mybatis版本号 -->  
        <mybatis.version>3.2.6</mybatis.version>  
        <!-- log4j日志文件管理包版本 -->  
        <slf4j.version>1.7.7</slf4j.version>  
        <log4j.version>1.2.17</log4j.version>  
    </properties> 
    
    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
             <!-- 表示开发的时候引入,发布的时候不会加载此包 -->  
            <scope>test</scope>
        </dependency>
        <!-- <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
        </dependency> -->
        
         <!-- spring核心包 -->  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-core</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-web</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-oxm</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-tx</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-webmvc</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-aop</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-context-support</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-test</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
        <!-- mybatis核心包 -->  
        <dependency>  
            <groupId>org.mybatis</groupId>  
            <artifactId>mybatis</artifactId>  
            <version>${mybatis.version}</version>  
        </dependency>  
         <!-- mybatis/spring包 -->  
        <dependency>  
            <groupId>org.mybatis</groupId>  
            <artifactId>mybatis-spring</artifactId>  
            <version>1.2.2</version>  
        </dependency>  
        
         <!-- 导入java ee jar 包 -->  
        <dependency>  
            <groupId>javax</groupId>  
            <artifactId>javaee-api</artifactId>  
            <version>7.0</version>  
        </dependency>  
        
         <!-- 导入Mysql数据库链接jar包 -->  
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.11</version>
        </dependency>
        <!-- 导入dbcp的jar包,用来在applicationContext.xml中配置数据库 -->  
        <dependency>  
            <groupId>commons-dbcp</groupId>  
            <artifactId>commons-dbcp</artifactId>  
            <version>1.2.2</version>  
        </dependency>  
        
        <!-- JSTL标签类 -->  
        <dependency>  
            <groupId>jstl</groupId>  
            <artifactId>jstl</artifactId>  
            <version>1.2</version>  
        </dependency>  
        <!-- 日志文件管理包 -->  
        <!-- log start -->  
        <dependency>  
            <groupId>log4j</groupId>  
            <artifactId>log4j</artifactId>  
            <version>${log4j.version}</version>  
        </dependency>  
          
          
        <!-- 格式化对象,方便输出日志 -->  
        <dependency>  
            <groupId>com.alibaba</groupId>  
            <artifactId>fastjson</artifactId>  
            <version>1.1.41</version>  
        </dependency>  
  
  
        <dependency>  
            <groupId>org.slf4j</groupId>  
            <artifactId>slf4j-api</artifactId>  
            <version>${slf4j.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.slf4j</groupId>  
            <artifactId>slf4j-log4j12</artifactId>  
            <version>${slf4j.version}</version>  
        </dependency>  
        <!-- log end -->  
        <!-- 映入JSON -->  
        <dependency>  
            <groupId>org.codehaus.jackson</groupId>  
            <artifactId>jackson-mapper-asl</artifactId>  
            <version>1.9.13</version>  
        </dependency>  
        <!-- 上传组件包 -->  
        <dependency>  
            <groupId>commons-fileupload</groupId>  
            <artifactId>commons-fileupload</artifactId>  
            <version>1.3.1</version>  
        </dependency>  
        <dependency>  
            <groupId>commons-io</groupId>  
            <artifactId>commons-io</artifactId>  
            <version>2.4</version>  
        </dependency>  
        <dependency>  
            <groupId>commons-codec</groupId>  
            <artifactId>commons-codec</artifactId>  
            <version>1.9</version>  
        </dependency>  

    </dependencies>
    
    <build>
        <finalName>maven01</finalName>
        <plugins>
            <plugin>
                <groupId>org.eclipse.jetty</groupId>
                <artifactId>jetty-maven-plugin</artifactId>
                <version>9.2.8.v20150217</version>
                <configuration>
                    <httpConnector>
                        <port>80</port>
                    </httpConnector>
                    <stopKey>shutdown</stopKey>
                    <stopPort>9966</stopPort>
                </configuration>
            </plugin>
            <plugin>
			    <groupId>org.mybatis.generator</groupId>
			    <artifactId>mybatis-generator-maven-plugin</artifactId>
			    <version>1.3.2</version>
			    <configuration>
			    <verbose>true</verbose>
			    <overwrite>true</overwrite>
			    </configuration>
			</plugin>
        </plugins>
    </build>

</project>

在resource文件夹新建spring-mvc.xml文件

<?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"  
    xsi:schemaLocation="http://www.springframework.org/schema/beans    
                        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd    
                        http://www.springframework.org/schema/context    
                        http://www.springframework.org/schema/context/spring-context-3.1.xsd    
                        http://www.springframework.org/schema/mvc    
                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">  
    <!-- 自动扫描该包,使SpringMVC认为包下用了@controller注解的类是控制器 -->  
    <context:component-scan base-package="com.ssm.controller" />  
    <!-- 扩充了注解驱动,可以将请求参数绑定到控制器参数 -->
    <mvc:annotation-driven/>
    <!-- 静态资源处理  css js imgs -->
    <mvc:resources location="/resources/**" mapping="/resources"/>
    
    <!--避免IE执行AJAX时,返回JSON出现下载文件 -->  
    <bean id="mappingJacksonHttpMessageConverter"  
        class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">  
        <property name="supportedMediaTypes">  
            <list>  
                <value>text/html;charset=UTF-8</value>  
            </list>  
        </property>  
    </bean>  
    <!-- 启动SpringMVC的注解功能,完成请求和注解POJO的映射 -->  
    <bean  
        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">  
        <property name="messageConverters">  
            <list>  
                <ref bean="mappingJacksonHttpMessageConverter" /> <!-- JSON转换器 -->  
            </list>  
        </property>  
    </bean>  
      
    <!-- 配置文件上传,如果没有使用文件上传可以不用配置,当然如果不配,那么配置文件中也不必引入上传组件包 -->  
    <bean id="multipartResolver"    
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">    
        <!-- 默认编码 -->  
        <property name="defaultEncoding" value="utf-8" />    
        <!-- 文件大小最大值 -->  
        <property name="maxUploadSize" value="10485760000" />    
        <!-- 内存中的最大值 -->  
        <property name="maxInMemorySize" value="40960" />    
        <!-- 启用是为了推迟文件解析,以便捕获文件大小异常 -->
        <property name="resolveLazily" value="true"/>
    </bean>   
    
    <!-- 配置ViewResolver 。可用多个ViewResolver 。使用order属性排序。   InternalResourceViewResolver 放在最后-->
    <bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
    <property name="order" value="1"></property>
        <property name="mediaTypes">
            <map>
                <!-- 告诉视图解析器,返回的类型为json格式 -->
                <entry key="json" value="application/json" />
                <entry key="xml" value="application/xml" />
                <entry key="htm" value="text/htm" />
            </map>
        </property>
        <property name="defaultViews">
            <list>
                <!-- ModelAndView里的数据变成JSON -->
                <bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />
            </list>
        </property>
        <property name="ignoreAcceptHeader" value="true"></property>
    </bean>
    
   <!-- 定义跳转的文件的前后缀 ,视图模式配置-->  
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
        <!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀,变成一个 可用的url地址 -->  
        <property name="prefix" value="/WEB-INF/jsp/" />  
        <property name="suffix" value=".jsp" />  
    </bean>  
</beans>

修改web.xml文件

<?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_3_0.xsd"  
    version="3.0">  
    <display-name>Archetype Created Web Application</display-name>  
    <!-- Spring和mybatis的配置文件 -->  
   <!--  <context-param>  
        <param-name>contextConfigLocation</param-name>  
        <param-value>classpath:spring-mybatis.xml</param-value>  
    </context-param>   -->
    <!-- 编码过滤器 -->  
    <filter>  
        <filter-name>encodingFilter</filter-name>  
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>  
        <async-supported>true</async-supported>  
        <init-param>  
            <param-name>encoding</param-name>  
            <param-value>UTF-8</param-value>  
        </init-param>  
    </filter>  
    <filter-mapping>  
        <filter-name>encodingFilter</filter-name>  
        <url-pattern>/*</url-pattern>  
    </filter-mapping>  
    <!-- Spring监听器 -->  
   <!--  <listener>  
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  
    </listener>   -->
    <!-- 防止Spring内存溢出监听器 -->  
    <!-- <listener>  
        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>  
    </listener>  --> 
  
    <!-- Spring MVC servlet -->  
    <servlet>  
        <servlet-name>SpringMVC</servlet-name>  
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
        <init-param>  
            <param-name>contextConfigLocation</param-name>  
            <param-value>classpath:spring-mvc.xml</param-value>  
        </init-param>  
        <load-on-startup>1</load-on-startup>  
        <async-supported>true</async-supported>  
    </servlet>  
    <servlet-mapping>  
        <servlet-name>SpringMVC</servlet-name>  
        <!-- 此处可以可以配置成*.do,对应struts的后缀习惯 -->  
        <url-pattern>/</url-pattern>  
    </servlet-mapping>  
    <welcome-file-list>  
        <welcome-file>/index.jsp</welcome-file>  
    </welcome-file-list>  
  
</web-app>

新建model类和控制层

在这里插入图片描述
user类如下:

package com.ssm.model;


public class User {
    private Integer id;

    private String userName;

    private String password;

    private Integer age;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName == null ? null : userName.trim();
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password == null ? null : password.trim();
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "User [id=" + id + ", userName=" + userName + ", password="
                + password + ", age=" + age + "]";
    }
    
    
}

控制层类

package com.ssm.controller;

import javax.servlet.http.HttpServletRequest;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import com.ssm.model.User;
  
  
@Controller  
@RequestMapping("/user")  
// /user/**
public class UserController {  
    private static Logger log=LoggerFactory.getLogger(UserController.class);
      
    
    // /user/test?id=1
    @RequestMapping(value="/test",method=RequestMethod.GET)  
    public String test(HttpServletRequest request,Model model){  
        int userId = Integer.parseInt(request.getParameter("id"));  
        System.out.println("userId:"+userId);
        User user=null;
        if (userId==1) {
             user = new User();  
             user.setAge(11);
             user.setId(1);
             user.setPassword("123");
             user.setUserName("javen");
        }
       
        log.debug(user.toString());
        model.addAttribute("user", user);  
        return "index";  
    }  
}

在WEB-INF目录下新建jsp文件件

再新建index.jsp页面
在这里插入图片描述
index.jsp

<html>
<body>
<h2>Hello World!</h2>
</body>
</html>

使用Jetty测试

在这里插入图片描述
在这里插入图片描述
在这里插入图片描述
在浏览器中输入:http://localhost/user/test?id=1
在这里插入图片描述

Spring与MyBatis的整合

在resource文件夹新建datasource.properties文件

db.driverLocation=D:\apache-maven-3.5.3-bin\apache-maven-3.5.3\repository\mysql\mysql-connector-java\8.0.11\mysql-connector-java-8.0.11.jar
db.driverClassName=com.mysql.cj.jdbc.Driver
db.url=jdbc:mysql://localhost:3306/task?useSSL=false&serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8
db.username=root
db.password=root
#定义初始连接数  
initialSize=0  
#定义最大连接数  
maxActive=20  
#定义最大空闲  
maxIdle=20  
#定义最小空闲  
minIdle=1  
#定义最长等待时间  
maxWait=60000  

在resource文件夹新建spring-mybatis.xml文件

<?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"  
    xsi:schemaLocation="http://www.springframework.org/schema/beans    
                        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd    
                        http://www.springframework.org/schema/context    
                        http://www.springframework.org/schema/context/spring-context-3.1.xsd    
                        http://www.springframework.org/schema/mvc    
                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">  
    <!-- 自动扫描 -->  
    <context:component-scan base-package="com.ssm" />  
    
    <!-- 引入配置文件 -->  
    <bean id="propertyConfigurer"  
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">  
        <property name="location" value="classpath:datasource.properties" />  
    </bean>  
  
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"  
        destroy-method="close">  
        <property name="driverClassName" value="${db.driverClassName}" />  
        <property name="url" value="${db.url}" />  
        <property name="username" value="${db.username}" />  
        <property name="password" value="${db.password}" />  
        <!-- 初始化连接大小 -->  
        <property name="initialSize" value="${initialSize}"></property>  
        <!-- 连接池最大数量 -->  
        <property name="maxActive" value="${maxActive}"></property>  
        <!-- 连接池最大空闲 -->  
        <property name="maxIdle" value="${maxIdle}"></property>  
        <!-- 连接池最小空闲 -->  
        <property name="minIdle" value="${minIdle}"></property>  
        <!-- 获取连接最大等待时间 -->  
        <property name="maxWait" value="${maxWait}"></property>  
    </bean>  
  
    <!-- spring和MyBatis完美整合,不需要mybatis的配置映射文件 -->  
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">  
        <property name="dataSource" ref="dataSource" />  
        <!-- 自动扫描mapping.xml文件 -->  
        <property name="mapperLocations" value="classpath:com/ssm/mappers/*.xml"></property>  
    </bean>  
  
    <!-- DAO接口所在包名,Spring会自动查找其下的类 -->  
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">  
        <property name="basePackage" value="com.ssm.dao" />  
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>  
    </bean>  
  
    <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->  
    <bean id="transactionManager"  
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">  
        <property name="dataSource" ref="dataSource" />  
    </bean>  
  
</beans>

创建测试用表

-- ----------------------------
-- Table structure for `user_t`
-- ----------------------------
DROP TABLE IF EXISTS `user_t`;
CREATE TABLE `user_t` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `user_name` varchar(40) NOT NULL,
  `password` varchar(255) NOT NULL,
  `age` int(4) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;

-- ----------------------------
-- Records of user_t
-- ----------------------------
INSERT INTO `user_t` VALUES ('1', '测试', '345', '24');
INSERT INTO `user_t` VALUES ('2', 'javen', '123', '10');

利用MyBatis Generator自动创建代码, 在resource文件夹新建generatorConfig.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
        PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
        "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
 
<generatorConfiguration>
    <!--导入属性配置-->
    <properties resource="datasource.properties"></properties>
 
    <!-- 指定数据库驱动的jdbc驱动jar包的位置 -->
    <classPathEntry location="D:\apache-maven-3.5.3-bin\apache-maven-3.5.3\repository\mysql\mysql-connector-java\8.0.11\mysql-connector-java-8.0.11.jar" />
 
    <!-- context 是逆向工程的主要配置信息 -->
    <!-- id:起个名字 -->
    <!-- targetRuntime:设置生成的文件适用于那个 mybatis 版本 -->
    <context id="default" targetRuntime="MyBatis3">
 
        <!--optional,旨在创建class时,对注释进行控制-->
        <commentGenerator>
            <property name="suppressDate" value="true" />
            <!-- 是否去除自动生成的注释 true:是 : false:-->
            <property name="suppressAllComments" value="true" />
        </commentGenerator>
 
        <!--jdbc的数据库连接-->
        <jdbcConnection driverClass="${db.driverClassName}"
                        connectionURL="${db.url}"
                        userId="${db.username}"
                        password="${db.password}">
        </jdbcConnection>
 
        <!--非必须,类型处理器,在数据库类型和java类型之间的转换控制-->
        <javaTypeResolver>
            <!-- 默认情况下数据库中的 decimal,bigInt 在 Java 对应是 sql 下的 BigDecimal 类 -->
            <!-- 不是 doublelong 类型 -->
            <!-- 使用常用的基本类型代替 sql 包下的引用类型 -->
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>
 
        <!-- targetPackage:生成的实体类所在的包 -->
        <!-- targetProject:生成的实体类所在的硬盘位置 -->
        <javaModelGenerator targetPackage="com.ssm.pojo"
                            targetProject=".\src\main\java">
            <!-- 是否允许子包 -->
            <property name="enableSubPackages" value="false" />
            <!-- 是否对modal添加构造函数 -->
            <property name="constructorBased" value="true" />
            <!-- 是否清理从数据库中查询出的字符串左右两边的空白字符 -->
            <property name="trimStrings" value="true" />
            <!-- 建立modal对象是否不可改变 即生成的modal对象不会有setter方法,只有构造方法 -->
            <property name="immutable" value="false" />
        </javaModelGenerator>
 
        <!-- targetPackage 和 targetProject:生成的 mapper 文件的包和位置 -->
        <sqlMapGenerator targetPackage="com.ssm.mappers"
                         targetProject=".\src\main\java">
            <!-- 针对数据库的一个配置,是否把 schema 作为字包名 -->
            <property name="enableSubPackages" value="false" />
        </sqlMapGenerator>
 
        <!-- targetPackage 和 targetProject:生成的 interface 文件的包和位置 -->
        <javaClientGenerator type="XMLMAPPER"
                             targetPackage="com.ssm.dao" targetProject=".\src\main\java">
            <!-- 针对 oracle 数据库的一个配置,是否把 schema 作为字包名 -->
            <property name="enableSubPackages" value="false" />
        </javaClientGenerator>
        <table tableName="user_t" domainObjectName="User"
               enableCountByExample="false" enableUpdateByExample="false"
               enableDeleteByExample="false" enableSelectByExample="false"
               selectByExampleQueryId="false">
        </table>
    </context>
</generatorConfiguration>

邮件pom文件,如下图选项
在这里插入图片描述
在这里插入图片描述
自动生成的mapp类和映射xml文件如下:
在这里插入图片描述
UserMapper接口:

package com.ssm.dao;

import org.springframework.stereotype.Service;

import com.ssm.pojo.User;
/**
 * @author ASUS
 *
 */
@Service("userService")  
public interface UserMapper {
    int insert(User record);

    int insertSelective(User record);
}

UserMapper.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="com.ssm.dao.UserMapper" >
  <resultMap id="BaseResultMap" type="com.ssm.pojo.User" >
    <constructor >
      <arg column="id" jdbcType="INTEGER" javaType="java.lang.Integer" />
      <arg column="user_name" jdbcType="VARCHAR" javaType="java.lang.String" />
      <arg column="password" jdbcType="VARCHAR" javaType="java.lang.String" />
      <arg column="age" jdbcType="INTEGER" javaType="java.lang.Integer" />
    </constructor>
  </resultMap>
  <insert id="insert" parameterType="com.ssm.pojo.User" >
    insert into user_t (id, user_name, password, 
      age)
    values (#{id,jdbcType=INTEGER}, #{userName,jdbcType=VARCHAR}, #{password,jdbcType=VARCHAR}, 
      #{age,jdbcType=INTEGER})
  </insert>
  <insert id="insertSelective" parameterType="com.ssm.pojo.User" >
    insert into user_t
    <trim prefix="(" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        id,
      </if>
      <if test="userName != null" >
        user_name,
      </if>
      <if test="password != null" >
        password,
      </if>
      <if test="age != null" >
        age,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        #{id,jdbcType=INTEGER},
      </if>
      <if test="userName != null" >
        #{userName,jdbcType=VARCHAR},
      </if>
      <if test="password != null" >
        #{password,jdbcType=VARCHAR},
      </if>
      <if test="age != null" >
        #{age,jdbcType=INTEGER},
      </if>
    </trim>
  </insert>
</mapper>

User

package com.ssm.model;


public class User {
    private Integer id;

    private String userName;

    private String password;

    private Integer age;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName == null ? null : userName.trim();
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password == null ? null : password.trim();
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "User [id=" + id + ", userName=" + userName + ", password="
                + password + ", age=" + age + "]";
    }
    
    
}

测试插入数据

创建一个测试类

package com.ssm.test;


import javax.annotation.Resource;

import org.apache.log4j.Logger;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.ssm.dao.UserMapper;
import com.ssm.pojo.User;
  
@RunWith(SpringJUnit4ClassRunner.class)     //表示继承了SpringJUnit4ClassRunner类  
@ContextConfiguration(locations = {"classpath:spring-mybatis.xml"})  
  
public class TestMyBatis {  
    private static Logger logger = Logger.getLogger(TestMyBatis.class);  
//  private ApplicationContext ac = null;  
    @Resource  
    private UserMapper userMapper = null;  
  
//  @Before  
//  public void before() {  
//      ac = new ClassPathXmlApplicationContext("applicationContext.xml");  
//      userService = (IUserService) ac.getBean("userService");  
//  }  
  
    @Test  
    public void test1() {  
    	User record =new User();
    	record.setUserName("哈哈");
    	record.setPassword("1");
    	record.setAge(1);
        int i = userMapper.insert(record);  
        // System.out.println(user.getUserName());  
        // logger.info("值:"+user.getUserName());  
    }  
}

执行main方法可以插入到数据库中的数据
在这里插入图片描述


-END-

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