spring+springmvc+mybatis整合框架搭建
由于例子是基于Maven搭建的，所以首先是pom.xml文件的依赖信息；
<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.zte.ems</groupId> <artifactId>spring-mybatis-springmvc</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>spring-mybatis-springmvc Maven Webapp</name> <url>http://maven.apache.org</url> <properties> <!-- lib version --> <!-- base setting --> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.build.locales>zh_CN</project.build.locales> <project.build.jdk>1.7</project.build.jdk> <!-- plugin setting --> <mybatis.generator.generatorConfig.xml>${basedir}/src/test/resources/generatorConfig.xml</mybatis.generator.generatorConfig.xml> <mybatis.generator.generatorConfig.properties>file:///${basedir}/src/test/resources/generatorConfig.properties</mybatis.generator.generatorConfig.properties> <!-- plugin versions --> <plugin.mybatis.generator>1.3.1</plugin.mybatis.generator> <plugin.maven-compiler>3.1</plugin.maven-compiler> <!-- lib versions --> <junit.version>4.11</junit.version> <spring.version>4.0.2.RELEASE</spring.version> <mybatis.version>3.2.2</mybatis.version> <mybatis.spring.version>1.2.2</mybatis.spring.version> <mysql.connector.version>5.0.5</mysql.connector.version> <postgresql.version>9.1-901.jdbc4</postgresql.version> <slf4j.version>1.6.6</slf4j.version> <log4j.version>1.2.12</log4j.version> <httpclient.version>4.1.2</httpclient.version> <jackson.version>1.9.13</jackson.version> <c3p0.version>0.9.1.2</c3p0.version> <druid.version>1.0.5</druid.version> <tomcat.jdbc.version>7.0.53</tomcat.jdbc.version> <jstl.version>1.2</jstl.version> <google.collections.version>1.0</google.collections.version> <cglib.version>3.1</cglib.version> <shiro.version>1.2.3</shiro.version> <commons.fileupload.version>1.3.1</commons.fileupload.version> <commons.codec.version>1.9</commons.codec.version> <commons.net.version>3.3</commons.net.version> <aspectj.version>1.6.12</aspectj.version> <netty.version>4.0.18.Final</netty.version> <hibernate.validator.version>5.1.1.Final</hibernate.validator.version> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <!--添加spring依赖 --> <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>${spring.version}</version> </dependency> <!-- aspectJ依赖 --> <!-- aspectjweaver --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>${aspectj.version}</version> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjrt</artifactId> <version>${aspectj.version}</version> </dependency> <!-- springframe end --> <!-- 添加mybatis依赖 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>${mybatis.spring.version}</version> </dependency> <dependency> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-core</artifactId> <version>1.3.2</version> <type>jar</type> <scope>test</scope> </dependency> <!--mybatis end--> <!-- 添加springmvc依赖 --> <!-- 添加jsp、servlet依赖 --> <!-- servlet api --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <!-- jstl --> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>${jstl.version}</version> </dependency> <dependency> <groupId>taglibs</groupId> <artifactId>standard</artifactId> <version>1.1.2</version> </dependency> <!-- 添加mysQL依赖 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.connector.version}</version> </dependency> <!-- 数据源的配置 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>${druid.version}</version> </dependency> <!-- 添加jackson依赖 --> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-mapper-asl</artifactId> <version>${jackson.version}</version> </dependency> <!-- 添加log相关依赖 --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4j.version}</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 --> <!-- cglib --> <dependency> <groupId>cglib</groupId> <artifactId>cglib-nodep</artifactId> <version>${cglib.version}</version> </dependency> <!-- start apache --> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>${commons.fileupload.version}</version> </dependency> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>${httpclient.version}</version> </dependency> <dependency> <groupId>commons-codec</groupId> <artifactId>commons-codec</artifactId> <version>${commons.codec.version}</version> </dependency> <dependency> <groupId>commons-net</groupId> <artifactId>commons-net</artifactId> <version>${commons.net.version}</version> </dependency> <dependency> <groupId>commons-logging</groupId> <artifactId>commons-logging</artifactId> <version>1.1.3</version> </dependency> <dependency> <groupId>commons-collections</groupId> <artifactId>commons-collections</artifactId> <version>3.2.1</version> </dependency> <!-- end apache --> </dependencies> <build> <finalName>spring-mybatis-springmvc</finalName> <pluginManagement> <plugins> <!--Maven编译插件 配置--> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>${plugin.maven-compiler}</version> <configuration> <source>${project.build.jdk}</source> <target>${project.build.jdk}</target> <encoding>${project.build.sourceEncoding}</encoding> </configuration> </plugin> <!-- 配置tomcat插件 --> <plugin> <groupId>org.apache.tomcat.maven</groupId> <artifactId>tomcat7-maven-plugin</artifactId> <version>2.2</version> <configuration> <path>/ssm</path> <port>8080</port> <uriEncoding>UTF-8</uriEncoding> <url>http://localhost:8080/manager/text</url> <server>tomcat7</server> </configuration> </plugin> <!-- Mybatis generator代码生成插件 配置 --> <plugin> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-maven-plugin</artifactId> <version>${plugin.mybatis.generator}</version> <configuration> <configurationFile>${mybatis.generator.generatorConfig.xml}</configurationFile> <overwrite>true</overwrite> <verbose>true</verbose> </configuration> </plugin> </plugins> </pluginManagement> <!--配置Maven 对resource文件 过滤 --> <resources> <resource> <directory>src/main/resources</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>true</filtering> </resource> <resource> <directory>src/main/java</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>true</filtering> </resource> </resources> </build> </project>
第一步：配置mybatis：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> <typeAliases> <package name="com.zte.ems.model"/> </typeAliases> </configuration>
第二步：配置spring相关的三个xml文件
（1）spring-dao.xml文件的配置。该文件主要配置了数据库相关的信息，以及spring-mybaits的信息；
<?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"> <!-- 数据库连接池 --> <!-- 加载配置文件 --> <context:property-placeholder location="classpath:db.properties" /> <!-- 数据库连接池 --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close"> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <property name="driverClassName" value="${jdbc.driver}" /> <property name="maxActive" value="10" /> <property name="minIdle" value="5" /> </bean> <!-- 配置sqlsessionFactory --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="configLocation" value="classpath:mybatis-config.xml"></property> <property name="mapperLocations" value="classpath:com/zte/ems/dao/*.xml"></property> <property name="dataSource" ref="dataSource"></property> </bean> <!-- 配置扫描包，加载mapper代理对象 --> <!-- 这个配置隐式注册了多个对注解进行解析处理的处理器 --> <context:annotation-config/> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.zte.ems.dao"></property> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> </bean> </beans>
（2）spring-service.xml文件的配置，这个配置文件主要配置了扫描哪些包下的类让Spring容器管理；
<?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"> <!-- 这个配置隐式注册了多个对注解进行解析处理的处理器 --> <context:annotation-config/> <!-- 扫描包加载Service实现类 --> <context:component-scan base-package="com.zte.ems.service"/> </beans>
（3）spring-trans.xml文件的配置，这个文件主要配置了aop切面和事务相关的信息；
<?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"> <!-- 事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!-- 数据源 --> <property name="dataSource" ref="dataSource" /> </bean> <!-- 通知 --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <!-- 传播行为 --> <tx:method name="save*" propagation="REQUIRED" /> <tx:method name="insert*" propagation="REQUIRED" /> <tx:method name="add*" propagation="REQUIRED" /> <tx:method name="create*" propagation="REQUIRED" /> <tx:method name="delete*" propagation="REQUIRED" /> <tx:method name="update*" propagation="REQUIRED" /> <tx:method name="find*" propagation="SUPPORTS" read-only="true" /> <tx:method name="select*" propagation="SUPPORTS" read-only="true" /> <tx:method name="get*" propagation="SUPPORTS" read-only="true" /> </tx:attributes> </tx:advice> <!-- 切面 --> <aop:config> <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.zte.ems.service.*.*(..))" /> </aop:config> </beans>
第三步：springmvc-config.xml文件的配置；
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" 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" xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd 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 http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <mvc:annotation-driven/> <!-- 开启controller注解支持 --> <!-- use-default-filters="false" 只扫描指定的注解 --> <context:component-scan base-package="com.zte.ems.controllers" use-default-filters="false"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!-- 会自动注册DefaultAnnotationHandlerMapping与AnnotationMethodHandlerAdapter 两个bean,是spring MVC为@Controllers分发请求所必须的 --> <!-- 如果当前请求为“/”时，则转发到“/helloworld/index” --> <mvc:view-controller path="/" view-name="forward:/helloworld/index"/> <!-- 静态资源映射 --> <mvc:resources mapping="/js/**" location="/WEB-INF/js/" /> <mvc:resources mapping="/css/**" location="/WEB-INF/css/" /> <mvc:resources mapping="/fonts/**" location="/WEB-INF/fonts/" /> <mvc:resources mapping="/plugins/**" location="/WEB-INF/plugins/" /> <mvc:resources mapping="images/**" location="/WEB-INF/images/" /> <!-- 当上面要访问的静态资源不包括在上面的配置中时，则根据此配置来访问 --> <mvc:default-servlet-handler/> <!-- 配置视图解析器，并指定视图所在的文件夹 --> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/> <property name="contentType" value="text/html"/> <property name="prefix" value="/WEB-INF/views/"/><!-- WEB-INF/views/ --> <property name="suffix" value=".jsp"/> </bean> </beans>
第四步：web.xml文件的配置，在这个文件中主要配置spring和springmvc；
<?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" 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_2_5.xsd" id="tomcat" version="2.5"> <display-name>Archetype Created Web Application</display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> <!-- 配置spring --> <context-param> <param-name>contextConfigLocation</param-name> <param-value> classpath:spring-*.xml </param-value> </context-param> <!-- 配置Spring上下文监听器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 解决post乱码 --> <filter> <filter-name>CharacterEncodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>utf-8</param-value> </init-param> </filter> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 配置springmvc --> <servlet> <servlet-name>ssm</servlet-name> <!-- DispatcherServlet:前端控制器,主要就是拦截请求，然后调用对应的Controller和Action --> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc-config.xml</param-value> </init-param> <!-- <load-on-startup>是启动顺序，让这个Servlet随Servletp容器一起启动，必须放在<servlet> 配置的最后。 --> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <!-- 指定配置的是哪个servlet --> <servlet-name>ssm</servlet-name> <!-- 指定拦截哪些请求到该servlet，这里配置的是拦截全部请求 --> <url-pattern>/</url-pattern> </servlet-mapping> </web-app>
第五步：编写代码
1、编写POJO类：
package com.zte.ems.model; public class Person { private Integer id; private String name; private Integer sex; private String email; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name == null ? null : name.trim(); } public Integer getSex() { return sex; } public void setSex(Integer sex) { this.sex = sex; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email == null ? null : email.trim(); } }
2、使用mybatis逆向工程根据数据库中Person表自动生成PersonMapper.java 和PersonMapper.xml
package com.zte.ems.dao; import com.zte.ems.model.Person; import com.zte.ems.model.PersonExample; import java.util.List; import org.apache.ibatis.annotations.Param; public interface PersonMapper { int countByExample(PersonExample example); int deleteByExample(PersonExample example); int deleteByPrimaryKey(Integer id); int insert(Person record); int insertSelective(Person record); List<Person> selectByExample(PersonExample example); Person selectByPrimaryKey(Integer id); int updateByExampleSelective(@Param("record") Person record, @Param("example") PersonExample example); int updateByExample(@Param("record") Person record, @Param("example") PersonExample example); int updateByPrimaryKeySelective(Person record); int updateByPrimaryKey(Person record); }
<?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.zte.ems.dao.PersonMapper" > <resultMap id="BaseResultMap" type="com.zte.ems.model.Person" > <id column="id" property="id" jdbcType="INTEGER" /> <result column="name" property="name" jdbcType="VARCHAR" /> <result column="sex" property="sex" jdbcType="INTEGER" /> <result column="email" property="email" jdbcType="VARCHAR" /> </resultMap> <sql id="Example_Where_Clause" > <where > <foreach collection="oredCriteria" item="criteria" separator="or" > <if test="criteria.valid" > <trim prefix="(" suffix=")" prefixOverrides="and" > <foreach collection="criteria.criteria" item="criterion" > <choose > <when test="criterion.noValue" > and ${criterion.condition} </when> <when test="criterion.singleValue" > and ${criterion.condition} #{criterion.value} </when> <when test="criterion.betweenValue" > and ${criterion.condition} #{criterion.value} and #{criterion.secondValue} </when> <when test="criterion.listValue" > and ${criterion.condition} <foreach collection="criterion.value" item="listItem" open="(" close=")" separator="," > #{listItem} </foreach> </when> </choose> </foreach> </trim> </if> </foreach> </where> </sql> <sql id="Update_By_Example_Where_Clause" > <where > <foreach collection="example.oredCriteria" item="criteria" separator="or" > <if test="criteria.valid" > <trim prefix="(" suffix=")" prefixOverrides="and" > <foreach collection="criteria.criteria" item="criterion" > <choose > <when test="criterion.noValue" > and ${criterion.condition} </when> <when test="criterion.singleValue" > and ${criterion.condition} #{criterion.value} </when> <when test="criterion.betweenValue" > and ${criterion.condition} #{criterion.value} and #{criterion.secondValue} </when> <when test="criterion.listValue" > and ${criterion.condition} <foreach collection="criterion.value" item="listItem" open="(" close=")" separator="," > #{listItem} </foreach> </when> </choose> </foreach> </trim> </if> </foreach> </where> </sql> <sql id="Base_Column_List" > id, name, sex, email </sql> <select id="selectByExample" resultMap="BaseResultMap" parameterType="com.zte.ems.model.PersonExample" > select <if test="distinct" > distinct </if> <include refid="Base_Column_List" /> from person <if test="_parameter != null" > <include refid="Example_Where_Clause" /> </if> <if test="orderByClause != null" > order by ${orderByClause} </if> </select> <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" > select <include refid="Base_Column_List" /> from person where id = #{id,jdbcType=INTEGER} </select> <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" > delete from person where id = #{id,jdbcType=INTEGER} </delete> <delete id="deleteByExample" parameterType="com.zte.ems.model.PersonExample" > delete from person <if test="_parameter != null" > <include refid="Example_Where_Clause" /> </if> </delete> <insert id="insert" parameterType="com.zte.ems.model.Person" > insert into person (id, name, sex, email) values (#{id,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, #{sex,jdbcType=INTEGER}, #{email,jdbcType=VARCHAR}) </insert> <insert id="insertSelective" parameterType="com.zte.ems.model.Person" > insert into person <trim prefix="(" suffix=")" suffixOverrides="," > <if test="id != null" > id, </if> <if test="name != null" > name, </if> <if test="sex != null" > sex, </if> <if test="email != null" > email, </if> </trim> <trim prefix="values (" suffix=")" suffixOverrides="," > <if test="id != null" > #{id,jdbcType=INTEGER}, </if> <if test="name != null" > #{name,jdbcType=VARCHAR}, </if> <if test="sex != null" > #{sex,jdbcType=INTEGER}, </if> <if test="email != null" > #{email,jdbcType=VARCHAR}, </if> </trim> </insert> <select id="countByExample" parameterType="com.zte.ems.model.PersonExample" resultType="java.lang.Integer" > select count(*) from person <if test="_parameter != null" > <include refid="Example_Where_Clause" /> </if> </select> <update id="updateByExampleSelective" parameterType="map" > update person <set > <if test="record.id != null" > id = #{record.id,jdbcType=INTEGER}, </if> <if test="record.name != null" > name = #{record.name,jdbcType=VARCHAR}, </if> <if test="record.sex != null" > sex = #{record.sex,jdbcType=INTEGER}, </if> <if test="record.email != null" > email = #{record.email,jdbcType=VARCHAR}, </if> </set> <if test="_parameter != null" > <include refid="Update_By_Example_Where_Clause" /> </if> </update> <update id="updateByExample" parameterType="map" > update person set id = #{record.id,jdbcType=INTEGER}, name = #{record.name,jdbcType=VARCHAR}, sex = #{record.sex,jdbcType=INTEGER}, email = #{record.email,jdbcType=VARCHAR} <if test="_parameter != null" > <include refid="Update_By_Example_Where_Clause" /> </if> </update> <update id="updateByPrimaryKeySelective" parameterType="com.zte.ems.model.Person" > update person <set > <if test="name != null" > name = #{name,jdbcType=VARCHAR}, </if> <if test="sex != null" > sex = #{sex,jdbcType=INTEGER}, </if> <if test="email != null" > email = #{email,jdbcType=VARCHAR}, </if> </set> where id = #{id,jdbcType=INTEGER} </update> <update id="updateByPrimaryKey" parameterType="com.zte.ems.model.Person" > update person set name = #{name,jdbcType=VARCHAR}, sex = #{sex,jdbcType=INTEGER}, email = #{email,jdbcType=VARCHAR} where id = #{id,jdbcType=INTEGER} </update> </mapper>
3、编写Service代码：
package com.zte.ems.service; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.zte.ems.dao.PersonMapper; import com.zte.ems.model.Person; import com.zte.ems.model.PersonExample; import com.zte.ems.model.PersonExample.Criteria; @Service // 表明这个一个受IOC管理的Service类 public class MyService { @Autowired // 自动注入一个类 private PersonMapper personMapper; public Person getPerson(int id) { // 添加查询条件 PersonExample example = new PersonExample(); Criteria criteria = example.createCriteria(); criteria.andIdEqualTo(id); List<Person> list = personMapper.selectByExample(example); if (list != null && list.size() > 0) { Person person = list.get(0); return person; } return null; } }
4、编写Controller代码：
package com.zte.ems.controllers; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody;import com.zte.ems.model.Person; import com.zte.ems.service.MyService; @Controller // 表明这是一个控制器类 @RequestMapping("/admin") public class PageController { @Autowired private MyService myService; @Autowired private MyMapper myMapper; @RequestMapping("/index") public String shouIndex() { return "success"; } @ResponseBody // @ResponseBody该注解表示以json形式输出 @RequestMapping("/queryperson/{id}") public Person getPerson(@PathVariable int id) { Person person = myService.getPerson(id); return person; } }
最终的目录结构如下图所示：
