如何建立Spring Web项目参考
如何建立Spring Web项目
一 首先引入依赖
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
二 修改Spring-common.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: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.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<context:annotation-config/>
<context:component-scan base-package="com.st.ssm.Service"/>
<!-- 引入数据源 -->
<context:property-placeholder location="classpath:JDBC.properties"/>
<!-- 数据源 属性名与上面的不同-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${driverClass}"/>
<property name="jdbcUrl" value="${jdbcUrl}"/>
<property name="user" value="${user}"/>
<property name="password" value="${password}"></property>
<property name="minPoolSize" value="${minPoolSize}"></property>
<property name="maxPoolSize" value="${maxPoolSize}"></property>
<property name="initialPoolSize" value="${initialPoolSize}"></property>
</bean>
<!-- MyBatis sql -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
<!--扫描mapper.java -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.st.ssm.Mapper"/>
<!-- <property name="sqlsessionFactory" ref="sqlsessionFactory" />-->
</bean>
</beans>
增加了MyBatis sql和扫描mapper
<!-- MyBatis sql -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
<!--扫描mapper.java -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.st.ssm.Mapper"/>
<!-- <property name="sqlsessionFactory" ref="sqlsessionFactory" />-->
</bean>
增加mybatis-config.xml
<?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>
<!-- 打印查询语句 -->
<setting name="logImpl" value="STDOUT_LOGGING" />
</settings>
<typeAliases>
<typeAlias alias="UserModel"
type="com.st.ssm.Model.UserModel" />
</typeAliases>
<mappers>
<mapper resource="Mapper.xml" />
</mappers>
</configuration>
建立接口 和 mapper.xml文件
面向接口开发
建立mapper层
package com.st.ssm.Mapper;
import org.apache.ibatis.annotations.Mapper;
import com.st.ssm.Model.UserModel;
@Mapper
public interface UserMapper {
int insert(UserModel model);
}
创建Mapper.xml实现操作数据库数据
<?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.st.ssm.Mapper.UserMapper">
<!-- Result Map -->
<resultMap id="BaseResultMap" type="UserModel">
<result column="id" property="id" />
<result column="usercode" property="code" />
<result column="username" property="name" />
<result column="password" property="pass" />
</resultMap>
<!-- table all fields sql片段 -->
<sql id="Base_Column_List">
id, usercode, username, password
</sql>
<!-- 查询条件 -->
<sql id="Example_Where_Clause">
where 1=1
<if test="id != null">
and id = #{id}
</if>
<if test="code != null and code != ''">
and usercode = #{code}
</if>
<if test="name != null and name != ''">
and username = #{name}
</if>
<if test="pass != null and pass != ''">
and password = #{pass}
</if>
</sql>
<!-- 插入记录 -->
<!--selectKey 会将 SELECT LAST_INSERT_ID()的结果放入到传入的model的主键里面，
keyProperty 对应的model中的主键的属性名，这里是 user 中的id，因为它跟数据库的主键对应
order AFTER 表示 SELECT LAST_INSERT_ID() 在insert执行之后执行,多用与自增主键，
BEFORE 表示 SELECT LAST_INSERT_ID() 在insert执行之前执行，这样的话就拿不到主键了，
这种适合那种主键不是自增的类型
resultType 主键类型 -->
<!-- <selectKey resultType="java.lang.Integer" -->
<!-- order="AFTER" keyProperty="id"> -->
<!-- SELECT LAST_INSERT_ID() -->
<!-- </selectKey> -->
<insert id="insert" parameterType="Object" useGeneratedKeys="true" keyProperty="id">
insert into user(code, name, pass)
values(#{code}, #{name}, #{pass})
</insert>
<!-- 删除记录 -->
<delete id="delete" parameterType="Object">
delete from st_jsp.user where id = #{id}
</delete>
<delete id="deleteModel" parameterType="Object">
delete from st_jsp.user
<include refid="Example_Where_Clause" />
</delete>
<!-- 根据，修改记录 -->
<update id="update" parameterType="Object">
update st_jsp.user set
username = #{name}, password = #{pass}
where usercode = #{code}
</update>
<!-- 修改记录，只修改只不为空的字段 -->
<update id="updateActive" parameterType="Object">
update st_jsp.user set
<trim suffixOverrides=",">
<if test="name != null and name != '' ">
username = #{name},
</if>
<if test="pass != null and pass != '' ">
password = #{pass},
</if>
</trim>
where usercode = #{code}
</update>
<!-- 根据查询 系统用户 -->
<select id="selectId" resultMap="BaseResultMap" parameterType="Object">
select <include refid="Base_Column_List" />
from st_jsp.user where usercode = #{id}
</select>
<!-- 系统用户 列表总数 -->
<select id="selectCount" resultType="java.lang.Integer"
parameterType="UserModel">
select count(1) from st_jsp.user
<include refid="Example_Where_Clause" />
</select>
<!-- 查询系统用户列表 -->
<select id="selectModel" resultMap="BaseResultMap" parameterType="Object">
select <include refid="Base_Column_List" />
from st_jsp.user
<include refid="Example_Where_Clause" />
<!-- limit #{rowStart},#{pageLimit} -->
limit ${rowStart},${pageLimit}
<!-- <if test="pager.orderCondition != null and pager.orderCondition != ''"> -->
<!-- ${pager.orderCondition} -->
<!-- </if> -->
<!-- <if test="pager.mysqlQueryCondition != null and pager.mysqlQueryCondition != ''"> -->
<!-- ${pager.mysqlQueryCondition} -->
<!-- </if> -->
</select>
<!-- 查询系统用户列表 -->
<select id="selectAll" resultMap="BaseResultMap" parameterType="Object">
select <include refid="Base_Column_List" />
from st_jsp.user
<include refid="Example_Where_Clause" />
<!-- <if test="pager.orderCondition != null and pager.orderCondition != ''"> -->
<!-- ${pager.orderCondition} -->
<!-- </if> -->
</select>
</mapper>