MyBatis進修教程(八)-Mybatis3.x與Spring4.x整合圖文詳解。本站提示廣大學習愛好者:(MyBatis進修教程(八)-Mybatis3.x與Spring4.x整合圖文詳解)文章只能為提供參考,不一定能成為您想要的結果。以下是MyBatis進修教程(八)-Mybatis3.x與Spring4.x整合圖文詳解正文
1、搭建開辟情況
1.1、應用Maven創立Web項目
履行以下敕令:
mvn archetype:create -DgroupId=me.gacl -DartifactId=spring4-mybatis3 -DarchetypeArtifactId=maven-archetype-webapp -DinteractiveMode=false
以下圖所示:
創立好的項目以下:
編纂pom.xml文件
<project xmlns="http://maven.apache.org/POM/.." xmlns:xsi="http://www.w.org//XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/.. http://maven.apache.org/maven-v__.xsd"> <modelVersion>..</modelVersion> <groupId>me.gacl</groupId> <artifactId>spring-mybatis</artifactId> <packaging>war</packaging> <version>.-SNAPSHOT</version> <name>spring-mybatis Maven Webapp</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>..</version> <scope>test</scope> </dependency> </dependencies> <build> <finalName>spring-mybatis</finalName> </build> </project>
修正<name>spring4-mybatis3 Maven Webapp</name>部門,把"Maven Webapp"這部門包括空格的內容去失落,不然Maven在編譯項目時會由於空格的緣由招致一些莫明其妙的毛病湧現,修正成:<name>spring4-mybatis3</name>。
別的,把以下內容刪失落:
<dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>..</version> <scope>test</scope> </dependency>
這部門是junit的jar包依附信息,這個版本太低了,我們不應用這個Junit測試版本,修正事後的pom.xml內容以下:
<project xmlns="http://maven.apache.org/POM/.." xmlns:xsi="http://www.w.org//XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/.. http://maven.apache.org/maven-v__.xsd"> <modelVersion>..</modelVersion> <groupId>me.gacl</groupId> <artifactId>spring-mybatis</artifactId> <packaging>war</packaging> <version>.-SNAPSHOT</version> <name>spring-mybatis</name> <url>http://maven.apache.org</url> <dependencies> </dependencies> <build> <finalName>spring-mybatis</finalName> </build> </project>
1.2、將創立好的項目導入MyEclipse中
詳細操作步調以下圖所示:
手動創立【src/main/java】、【src/test/resources】、【src/test/java】這三個source folder,以下圖所示:
到此,項目搭建的任務就算是全體完成了。
2、創立數據庫和表(針對MySQL)
SQL劇本以下:
Create DATABASE spring4_mybatis3; USE spring4_mybatis3; DROP TABLE IF EXISTS t_user; CREATE TABLE t_user ( user_id char(32) NOT NULL, user_name varchar(30) DEFAULT NULL, user_birthday date DEFAULT NULL, user_salary double DEFAULT NULL, PRIMARY KEY (user_id) ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
創立好的數據庫和表以下:
3、應用generator對象生成代碼
在網上找到了一個generator對象可以依據創立好的數據庫表生成MyBatis的表對應的實體類,SQL映照文件和dao,找到generator對象根目次下的generator.xml文件,這個文件是用來設置裝備擺設代碼生陳規則的,以下圖所示:
編纂generator.xml文件,內容以下:
<?xml version="." encoding="UTF-"?> <!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration .//EN" "http://mybatis.org/dtd/mybatis-generator-config__.dtd"> <generatorConfiguration> <!-- 數據庫驅動包地位 --> <classPathEntry location="E:\repository\mysql\mysql-connector-java\..\mysql-connector-java-...jar" /> <!-- <classPathEntry location="C:\oracle\product\..\db_\jdbc\lib\ojdbc.jar" />--> <context id="DBTables" targetRuntime="MyBatis"> <commentGenerator> <property name="suppressAllComments" value="true" /> </commentGenerator> <!-- 數據庫鏈接URL、用戶名、暗碼 --> <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:/spring_mybatis" userId="root" password="XDP"> <!--<jdbcConnection driverClass="oracle.jdbc.driver.OracleDriver" connectionURL="jdbc:oracle:thin:@localhost::orcl" userId="msa" password="msa">--> </jdbcConnection> <javaTypeResolver> <property name="forceBigDecimals" value="false" /> </javaTypeResolver> <!-- 生成實體類的包名和地位,這裡設置裝備擺設將生成的實體類放在me.gacl.domain這個包下 --> <javaModelGenerator targetPackage="me.gacl.domain" targetProject="C:\Users\gacl\spring-mybatis\src\main\java"> <property name="enableSubPackages" value="true" /> <property name="trimStrings" value="true" /> </javaModelGenerator> <!-- 生成的SQL映照文件包名和地位,這裡設置裝備擺設將生成的SQL映照文件放在me.gacl.mapping這個包下 --> <sqlMapGenerator targetPackage="me.gacl.mapping" targetProject="C:\Users\gacl\spring-mybatis\src\main\java"> <property name="enableSubPackages" value="true" /> </sqlMapGenerator> <!-- 生成DAO的包名和地位,這裡設置裝備擺設將生成的dao類放在me.gacl.dao這個包下 --> <javaClientGenerator type="XMLMAPPER" targetPackage="me.gacl.dao" targetProject="C:\Users\gacl\spring-mybatis\src\main\java"> <property name="enableSubPackages" value="true" /> </javaClientGenerator> <!-- 要生成那些表(更改tableName和domainObjectName便可以) --> <table tableName="t_user" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" /> </context> </generatorConfiguration>
翻開敕令行窗口,切換到生成對象的根目次下,履行以下敕令:
java -jar mybatis-generator-core-1.3.2.jar -configfile generator.xml -overwrite
以下圖所示:
適才我們在generator.xml文件中設置裝備擺設將生成的代碼和SQL映照文件放到"C:\Users\gacl\spring4-mybatis3\src\main\java"這個目次下,這個目次就是我們的spring4-mybatis3項目地點目次,我們刷新一下src/main/java目次,便可以看到生成的代碼和映照文件了,以下圖所示:
生成的代碼和映照文件一行都不消改,可以直策應用到項目傍邊。上面我們看一眼由generator對象生成的代碼和映照文件:
1、生成的dao類
package me.gacl.dao; import me.gacl.domain.User; public interface UserMapper { int deleteByPrimaryKey(String userId); int insert(User record); int insertSelective(User record); User selectByPrimaryKey(String userId); int updateByPrimaryKeySelective(User record); int updateByPrimaryKey(User record); }
生成的UserMapper是一個接口,外面界說了一些操作t_user表的增刪改查辦法。
2、生成的實體類
package me.gacl.domain; import java.util.Date; public class User { private String userId; private String userName; private Date userBirthday; private Double userSalary; public String getUserId() { return userId; } public void setUserId(String userId) { this.userId = userId == null ? null : userId.trim(); } public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName == null ? null : userName.trim(); } public Date getUserBirthday() { return userBirthday; } public void setUserBirthday(Date userBirthday) { this.userBirthday = userBirthday; } public Double getUserSalary() { return userSalary; } public void setUserSalary(Double userSalary) { this.userSalary = userSalary; } }
User類是t_user表的對應的實體類,User類中界說的屬性和t_user表中的字段逐個對應。
3、生成的SQL映照文件
<?xml version="." encoding="UTF-" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper .//EN" "http://mybatis.org/dtd/mybatis--mapper.dtd" > <mapper namespace="me.gacl.dao.UserMapper" > <resultMap id="BaseResultMap" type="me.gacl.domain.User" > <id column="user_id" property="userId" jdbcType="CHAR" /> <result column="user_name" property="userName" jdbcType="VARCHAR" /> <result column="user_birthday" property="userBirthday" jdbcType="DATE" /> <result column="user_salary" property="userSalary" jdbcType="DOUBLE" /> </resultMap> <sql id="Base_Column_List" > user_id, user_name, user_birthday, user_salary </sql> <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.String" > select <include refid="Base_Column_List" /> from t_user where user_id = #{userId,jdbcType=CHAR} </select> <delete id="deleteByPrimaryKey" parameterType="java.lang.String" > delete from t_user where user_id = #{userId,jdbcType=CHAR} </delete> <insert id="insert" parameterType="me.gacl.domain.User" > insert into t_user (user_id, user_name, user_birthday, user_salary) values (#{userId,jdbcType=CHAR}, #{userName,jdbcType=VARCHAR}, #{userBirthday,jdbcType=DATE}, #{userSalary,jdbcType=DOUBLE}) </insert> <insert id="insertSelective" parameterType="me.gacl.domain.User" > insert into t_user <trim prefix="(" suffix=")" suffixOverrides="," > <if test="userId != null" > user_id, </if> <if test="userName != null" > user_name, </if> <if test="userBirthday != null" > user_birthday, </if> <if test="userSalary != null" > user_salary, </if> </trim> <trim prefix="values (" suffix=")" suffixOverrides="," > <if test="userId != null" > #{userId,jdbcType=CHAR}, </if> <if test="userName != null" > #{userName,jdbcType=VARCHAR}, </if> <if test="userBirthday != null" > #{userBirthday,jdbcType=DATE}, </if> <if test="userSalary != null" > #{userSalary,jdbcType=DOUBLE}, </if> </trim> </insert> <update id="updateByPrimaryKeySelective" parameterType="me.gacl.domain.User" > update t_user <set > <if test="userName != null" > user_name = #{userName,jdbcType=VARCHAR}, </if> <if test="userBirthday != null" > user_birthday = #{userBirthday,jdbcType=DATE}, </if> <if test="userSalary != null" > user_salary = #{userSalary,jdbcType=DOUBLE}, </if> </set> where user_id = #{userId,jdbcType=CHAR} </update> <update id="updateByPrimaryKey" parameterType="me.gacl.domain.User" > update t_user set user_name = #{userName,jdbcType=VARCHAR}, user_birthday = #{userBirthday,jdbcType=DATE}, user_salary = #{userSalary,jdbcType=DOUBLE} where user_id = #{userId,jdbcType=CHAR} </update> </mapper>
UserMapper.xml這個文件的內容是編寫操作t_user表的SQL語句,重點說一下UserMapper.xml設置裝備擺設中須要留意的幾個小細節成績:
1、UserMapper.xml的<mapper>標簽的namespace必需是UserMapper接口的全類名,既<mapper namespace="me.gacl.dao.UserMapper" >
2、UserMapper.xml的界說操作數據庫的<select><delete><update><insert>這些標簽的id屬性的值必需和UserMapper接口界說的辦法名分歧,以下圖所示:
之所以有上陳述的這兩點請求,就是為了可以或許讓MyBatis可以或許依據UserMapper接口和UserMapper.xml文件去主動完成UserMapper接口中界說的相干辦法,如許我們就不再須要針對UserMapper接口去編寫詳細的完成代碼了。
4、Spring與MyBatis整合
起首我們要在項目中參加我們須要的相干jar包,我們可以到Maven的中心倉庫:http://search.maven.org/找到我們要的相干jar包,以下圖所示:
我們只須要在搜刮框中輸出要找的jar包的稱號,點擊【SEARCH】按鈕,便可以找到我們要的jar包了。
4.1、添加Spring與Mybatis的相干jar包
1、添加spring-core,輸出spring-core症結字停止查找,以下圖所示:
找到關於spring-core的依附描寫信息,以下圖所示:
將
<dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>4.1.4.RELEASE</version> </dependency>
復制到項目標pom.xml文件中,以下所示:
<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>me.gacl</groupId> <artifactId>spring4-mybatis3</artifactId> <packaging>war</packaging> <version>1.0-SNAPSHOT</version> <name>spring4-mybatis3</name> <url>http://maven.apache.org</url> <dependencies> <!-- 添加Spring4.1.4的焦點包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>4.1.4.RELEASE</version> </dependency> </dependencies> <build> <finalName>spring4-mybatis3</finalName> </build> </project>
如許Maven就會主動幫我們從Maven的中心倉庫中下載spring-core這個jar包到我們的當地倉庫,然後將spring-core這個jar包和它的相干依附包參加到我們的項目傍邊,以下所示:
spring4.x與mybatis3.x所須要的相干jar包都可以采取上述所說的方法停止查找,然後添加到項目傍邊,添加完spring4.x與mybatis3.x相干jar包後,pom.xml文件內容終究以下:
<project xmlns="http://maven.apache.org/POM/.." xmlns:xsi="http://www.w.org//XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/.. http://maven.apache.org/maven-v__.xsd"> <modelVersion>..</modelVersion> <groupId>me.gacl</groupId> <artifactId>spring-mybatis</artifactId> <packaging>war</packaging> <version>.-SNAPSHOT</version> <name>spring-mybatis</name> <url>http://maven.apache.org</url> <dependencies> <!-- 添加Spring-core包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>...RELEASE</version> </dependency> <!-- 添加spring-context包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>...RELEASE</version> </dependency> <!-- 添加spring-tx包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>...RELEASE</version> </dependency> <!-- 添加spring-jdbc包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>...RELEASE</version> </dependency> <!-- 為了便利停止單位測試,添加spring-test包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>...RELEASE</version> </dependency> <!--添加spring-web包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>...RELEASE</version> </dependency> <!--添加aspectjweaver包 --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>..</version> </dependency> <!-- 添加mybatis的焦點包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>..</version> </dependency> <!-- 添加mybatis與Spring整合的焦點包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>..</version> </dependency> <!-- 添加servlet.焦點包 --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>..</version> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>javax.servlet.jsp-api</artifactId> <version>..-b</version> </dependency> <!-- jstl --> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>.</version> </dependency> <!-- 添加mysql驅動包 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>..</version> </dependency> <!-- 添加druid銜接池包 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>..</version> </dependency> <!-- 添加junit單位測試包 --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>.</version> <scope>test</scope> </dependency> </dependencies> <build> <finalName>spring-mybatis</finalName> </build> </project>
4.2、編寫相干設置裝備擺設文件
1、dbconfig.properties
在src/main/resources目次下創立一個dbconfig.properties文件,用於編寫銜接MySQL數據庫的相干信息,dbconfig.properties的內容以下:
driverClassName=com.mysql.jdbc.Driver validationQuery=SELECT 1 jdbc_url=jdbc:mysql://localhost:3306/spring4_mybatis3?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull jdbc_username=root jdbc_password=XDP
2、spring.xml(spring框架的設置裝備擺設文件)
在src/main/resources目次下創立一個spring.xml文件,spring.xml文件就是針對Spring框架編寫的焦點設置裝備擺設文件,spring.xml的內容以下:
<?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" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> <!-- 引入dbconfig.properties屬性文件 --> <context:property-placeholder location="classpath:dbconfig.properties" /> <!-- 主動掃描(主動注入),掃描me.gacl.service這個包和它的子包的一切應用@Service注解標注的類 --> <context:component-scan base-package="me.gacl.service" /> </beans>
我們的spring.xml文件的設置裝備擺設異常簡略,就兩個設置裝備擺設。
3、spring-mybatis.xml(spring與mybatis整合的設置裝備擺設文件)
在src/main/resources目次下創立一個spring-mybatis.xml文件,spring-mybatis.xml文件就是針對Spring框架與Mybatis框架整合編寫的設置裝備擺設文件,spring-mybatis.xml的內容以下:
<?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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd "> <!-- JNDI方法設置裝備擺設數據源 --> <!-- <bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryBean"> <property name="jndiName" value="${jndiName}"></property> </bean> --> <!-- ========================================設置裝備擺設數據源========================================= --> <!-- 設置裝備擺設數據源,應用的是alibaba的Druid(德魯伊)數據源 --> <bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> <property name="url" value="${jdbc_url}" /> <property name="username" value="${jdbc_username}" /> <property name="password" value="${jdbc_password}" /> <!-- 初始化銜接年夜小 --> <property name="initialSize" value="0" /> <!-- 銜接池最年夜應用銜接數目 --> <property name="maxActive" value="20" /> <!-- 銜接池最年夜余暇 --> <property name="maxIdle" value="20" /> <!-- 銜接池最小余暇 --> <property name="minIdle" value="0" /> <!-- 獲得銜接最年夜期待時光 --> <property name="maxWait" value="60000" /> <!-- <property name="poolPreparedStatements" value="true" /> <property name="maxPoolPreparedStatementPerConnectionSize" value="33" /> --> <property name="validationQuery" value="${validationQuery}" /> <property name="testOnBorrow" value="false" /> <property name="testOnReturn" value="false" /> <property name="testWhileIdle" value="true" /> <!-- 設置裝備擺設距離多久才停止一次檢測,檢測須要封閉的余暇銜接,單元是毫秒 --> <property name="timeBetweenEvictionRunsMillis" value="60000" /> <!-- 設置裝備擺設一個銜接在池中最小生計的時光,單元是毫秒 --> <property name="minEvictableIdleTimeMillis" value="25200000" /> <!-- 翻開removeAbandoned功效 --> <property name="removeAbandoned" value="true" /> <!-- 1800秒,也就是30分鐘 --> <property name="removeAbandonedTimeout" value="1800" /> <!-- 封閉abanded銜接時輸入毛病日記 --> <property name="logAbandoned" value="true" /> <!-- 監控數據庫 --> <!-- <property name="filters" value="stat" /> --> <property name="filters" value="mergeStat" /> </bean> <!-- ========================================分隔線========================================= --> <!-- ========================================針對myBatis的設置裝備擺設項============================== --> <!-- 設置裝備擺設sqlSessionFactory --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 實例化sqlSessionFactory時須要應用上述設置裝備擺設好的數據源和SQL映照文件 --> <property name="dataSource" ref="dataSource" /> <!-- 主動掃描me/gacl/mapping/目次下的一切SQL映照的xml文件, 免卻Configuration.xml裡的手工設置裝備擺設 value="classpath:me/gacl/mapping/*.xml"指的是classpath(類途徑)下me.gacl.mapping包中的一切xml文件 UserMapper.xml位於me.gacl.mapping包下,如許UserMapper.xml便可以被主動掃描 --> <property name="mapperLocations" value="classpath:me/gacl/mapping/*.xml" /> </bean> <!-- 設置裝備擺設掃描器 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 掃描me.gacl.dao這個包和它的子包下的一切映照接口類 --> <property name="basePackage" value="me.gacl.dao" /> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" /> </bean> <!-- ========================================分隔線========================================= --> <!-- 設置裝備擺設Spring的事務治理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <!-- 注解方法設置裝備擺設事物 --> <!-- <tx:annotation-driven transaction-manager="transactionManager" /> --> <!-- 攔阻器方法設置裝備擺設事物 --> <tx:advice id="transactionAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="add*" propagation="REQUIRED" /> <tx:method name="append*" propagation="REQUIRED" /> <tx:method name="insert*" propagation="REQUIRED" /> <tx:method name="save*" propagation="REQUIRED" /> <tx:method name="update*" propagation="REQUIRED" /> <tx:method name="modify*" propagation="REQUIRED" /> <tx:method name="edit*" propagation="REQUIRED" /> <tx:method name="delete*" propagation="REQUIRED" /> <tx:method name="remove*" propagation="REQUIRED" /> <tx:method name="repair" propagation="REQUIRED" /> <tx:method name="delAndRepair" propagation="REQUIRED" /> <tx:method name="get*" propagation="SUPPORTS" /> <tx:method name="find*" propagation="SUPPORTS" /> <tx:method name="load*" propagation="SUPPORTS" /> <tx:method name="search*" propagation="SUPPORTS" /> <tx:method name="datagrid*" propagation="SUPPORTS" /> <tx:method name="*" propagation="SUPPORTS" /> </tx:attributes> </tx:advice> <aop:config> <aop:pointcut id="transactionPointcut" expression="execution(* me.gacl.service..*Impl.*(..))" /> <aop:advisor pointcut-ref="transactionPointcut" advice-ref="transactionAdvice" /> </aop:config> <!-- 設置裝備擺設druid監控spring jdbc --> <bean id="druid-stat-interceptor" class="com.alibaba.druid.support.spring.stat.DruidStatInterceptor"> </bean> <bean id="druid-stat-pointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut" scope="prototype"> <property name="patterns"> <list> <value>me.gacl.service.*</value> </list> </property> </bean> <aop:config> <aop:advisor advice-ref="druid-stat-interceptor" pointcut-ref="druid-stat-pointcut" /> </aop:config> </beans>
到此,相干的設置裝備擺設文件算是編寫完成了,以下圖所示:
4.3、停止單位測試
經由以上兩個步調,spring4與mybatis3的整合算是全體完成了。接上去我們要做的任務就算停止單位測試,測試一下spring4與mybatis3的整合能否勝利。
1、在src/main/java目次下創立一個me.gacl.service包,然後在me.gacl.service包創立一個UserServiceI接口,以下所示:
package me.gacl.service; import me.gacl.domain.User; public interface UserServiceI { /** * 添加用戶 * @param user */ void addUser(User user); /** * 依據用戶id獲得用戶 * @param userId * @return */ User getUserById(String userId); }
2、在src/main/java目次下創立一個me.gacl.service.impl包,然後在me.gacl.service.impl包創立一個針對UserServiceI接口的完成類:UserServiceImpl,以下所示:
package me.gacl.service.impl; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import me.gacl.dao.UserMapper; import me.gacl.domain.User; import me.gacl.service.UserServiceI; /** * @author gacl * 應用@Service注解將UserServiceImpl類標注為一個service * service的id是userService */ @Service("userService") public class UserServiceImpl implements UserServiceI { /** * 應用@Autowired注解標注userMapper變量, * 當須要應用UserMapper時,Spring就會主動注入UserMapper */ @Autowired private UserMapper userMapper;//注入dao @Override public void addUser(User user) { userMapper.insert(user); } @Override public User getUserById(String userId) { return userMapper.selectByPrimaryKey(userId); } }
創立好的兩個類以下所示:
3、在src/test/java目次下編寫單位測試類,新建一個me.gacl.test包,然後在這個包下創立一個MyBatisTest類,代碼以下:
package me.gacl.test; import java.util.Date; import java.util.UUID; import me.gacl.domain.User; import me.gacl.service.UserServiceI; //import me.gacl.service.UserServiceI; import org.junit.Before; import org.junit.Test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class MyBatisTest { private UserServiceI userService; /** * 這個before辦法在一切的測試辦法之前履行,而且只履行一次 * 一切做Junit單位測試時一些初始化任務可以在這個辦法外面停止 * 好比在before辦法外面初始化ApplicationContext和userService */ @Before public void before(){ //應用"spring.xml"和"spring-mybatis.xml"這兩個設置裝備擺設文件創立Spring高低文 ApplicationContext ac = new ClassPathXmlApplicationContext(new String[]{"spring.xml","spring-mybatis.xml"}); //從Spring容器中依據bean的id掏出我們要應用的userService對象 userService = (UserServiceI) ac.getBean("userService"); } @Test public void testAddUser(){ //ApplicationContext ac = new ClassPathXmlApplicationContext(new String[]{"spring.xml","spring-mybatis.xml"}); //UserServiceI userService = (UserServiceI) ac.getBean("userService"); User user = new User(); user.setUserId(UUID.randomUUID().toString().replaceAll("-", "")); user.setUserName("白虎神皇xdp"); user.setUserBirthday(new Date()); user.setUserSalary(D); userService.addUser(user); } }
履行單位測試代碼,這時候候會報以下毛病:
毛病提醒是說沒有找到"me.gacl.test.MyBatisTest"這個類,這是由於我們沒有應用maven編譯項目中的類的原因。
上面我們應用Maven編譯項目,選中項目標pom.xml文件→【Debug As】→【maven install】,以下所示:
編譯成果以下:
在這裡說一下我履行Maven install以後碰到的成績,第一次履行Maven install敕令時,就湧現了以下一堆雜亂無章的毛病:
後來我把項目刪失落,再從新導入項目,然後再履行Clean項目操作以後,以下圖所示:
再履行Maven install操作又可以正常編譯經由過程了,這讓我愁悶了很久,這應當不是我項目設置裝備擺設的緣由,而是Maven的緣由,詳細也不曉得為啥會如許。橫豎這算是一種處理方法吧,假如碰到履行Maven install操作不克不及正常編譯經由過程的情形:可以測驗考試采取:Maven clean→Clean項目→Maven install這三個步調去處理成績。
除可以用慣例的Junit停止單位測試以外,我們還可使用Spring供給的Junit測試框架停止單位測試,在me.gacl.test下新建一個MyBatisTestBySpringTestFramework類,代碼以下:
package me.gacl.test; import java.util.Date; import java.util.UUID; import me.gacl.domain.User; import me.gacl.service.UserServiceI; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit.SpringJUnitClassRunner; @RunWith(SpringJUnitClassRunner.class) //設置裝備擺設了@ContextConfiguration注解並應用該注解的locations屬性指明spring和設置裝備擺設文件以後, @ContextConfiguration(locations = {"classpath:spring.xml", "classpath:spring-mybatis.xml" }) public class MyBatisTestBySpringTestFramework { //注入userService @Autowired private UserServiceI userService; @Test public void testAddUser(){ User user = new User(); user.setUserId(UUID.randomUUID().toString().replaceAll("-", "")); user.setUserName("xdp_gacl_白虎神皇"); user.setUserBirthday(new Date()); user.setUserSalary(D); userService.addUser(user); } @Test public void testGetUserById(){ String userId = "fbcebfdada"; User user = userService.getUserById(userId); System.out.println(user.getUserName()); } }
履行這兩個測試辦法,是可以正常測試經由過程的,以下所示:
到此,我們框架的整合測試任務就算是全體經由過程了,整分解功。
4.4、在web辦事器中停止測試
1、編纂web.xml文件,添加spring監聽器設置裝備擺設項,內容以下:
<?xml version="1.0" encoding="UTF-8"?> <web-app 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" version="3.0"> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <listener> <description>Spring監聽器</description> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- ContextLoaderListener初始化Spring高低文時須要應用到的contextConfigLocation參數 --> <context-param> <param-name>contextConfigLocation</param-name> <!-- 設置裝備擺設spring.xml和spring-mybatis.xml這兩個設置裝備擺設文件的地位,固定寫法 --> <param-value>classpath:spring.xml,classpath:spring-mybatis.xml</param-value> </context-param> </web-app>
2、在UserMapper接口中添加一個獲得一切用戶信息的getAllUser()辦法,以下所示:
package me.gacl.dao; import java.util.List; import me.gacl.domain.User; public interface UserMapper { int deleteByPrimaryKey(String userId); int insert(User record); int insertSelective(User record); User selectByPrimaryKey(String userId); int updateByPrimaryKeySelective(User record); int updateByPrimaryKey(User record); /**獲得一切用戶信息 * @return List<User> */ List<User> getAllUser(); }
3、在UserMapper.xml文件中編寫getAllUser()辦法要履行的SQL語句,以下所示:
<?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="me.gacl.dao.UserMapper" > <resultMap id="BaseResultMap" type="me.gacl.domain.User" > <id column="user_id" property="userId" jdbcType="CHAR" /> <result column="user_name" property="userName" jdbcType="VARCHAR" /> <result column="user_birthday" property="userBirthday" jdbcType="DATE" /> <result column="user_salary" property="userSalary" jdbcType="DOUBLE" /> </resultMap> <sql id="Base_Column_List" > user_id, user_name, user_birthday, user_salary </sql> <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.String" > select <include refid="Base_Column_List" /> from t_user where user_id = #{userId,jdbcType=CHAR} </select> <delete id="deleteByPrimaryKey" parameterType="java.lang.String" > delete from t_user where user_id = #{userId,jdbcType=CHAR} </delete> <insert id="insert" parameterType="me.gacl.domain.User" > insert into t_user (user_id, user_name, user_birthday, user_salary) values (#{userId,jdbcType=CHAR}, #{userName,jdbcType=VARCHAR}, #{userBirthday,jdbcType=DATE}, #{userSalary,jdbcType=DOUBLE}) </insert> <insert id="insertSelective" parameterType="me.gacl.domain.User" > insert into t_user <trim prefix="(" suffix=")" suffixOverrides="," > <if test="userId != null" > user_id, </if> <if test="userName != null" > user_name, </if> <if test="userBirthday != null" > user_birthday, </if> <if test="userSalary != null" > user_salary, </if> </trim> <trim prefix="values (" suffix=")" suffixOverrides="," > <if test="userId != null" > #{userId,jdbcType=CHAR}, </if> <if test="userName != null" > #{userName,jdbcType=VARCHAR}, </if> <if test="userBirthday != null" > #{userBirthday,jdbcType=DATE}, </if> <if test="userSalary != null" > #{userSalary,jdbcType=DOUBLE}, </if> </trim> </insert> <update id="updateByPrimaryKeySelective" parameterType="me.gacl.domain.User" > update t_user <set > <if test="userName != null" > user_name = #{userName,jdbcType=VARCHAR}, </if> <if test="userBirthday != null" > user_birthday = #{userBirthday,jdbcType=DATE}, </if> <if test="userSalary != null" > user_salary = #{userSalary,jdbcType=DOUBLE}, </if> </set> where user_id = #{userId,jdbcType=CHAR} </update> <update id="updateByPrimaryKey" parameterType="me.gacl.domain.User" > update t_user set user_name = #{userName,jdbcType=VARCHAR}, user_birthday = #{userBirthday,jdbcType=DATE}, user_salary = #{userSalary,jdbcType=DOUBLE} where user_id = #{userId,jdbcType=CHAR} </update> <!-- ==============以下內容是依據本身營業擴大的內容======================= --> <!-- select標簽的id屬性與UserMapper接口中界說的getAllUser辦法要如出一轍 --> <select id="getAllUser" resultMap="BaseResultMap"> select user_id, user_name, user_birthday, user_salary from t_user </select> </mapper>
4、在UserServiceI接口中也添加一個getAllUser()辦法,以下:
package me.gacl.service; import java.util.List; import me.gacl.domain.User; public interface UserServiceI { /** * 添加用戶 * @param user */ void addUser(User user); /** * 依據用戶id獲得用戶 * @param userId * @return */ User getUserById(String userId); /**獲得一切用戶信息 * @return List<User> */ List<User> getAllUser(); }
5、在UserServiceImpl類中完成getAllUser辦法,以下:
package me.gacl.service.impl; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import me.gacl.dao.UserMapper; import me.gacl.domain.User; import me.gacl.service.UserServiceI; /** * @author gacl * 應用@Service注解將UserServiceImpl類標注為一個service * service的id是userService */ @Service("userService") public class UserServiceImpl implements UserServiceI { /** * 應用@Autowired注解標注userMapper變量, * 當須要應用UserMapper時,Spring就會主動注入UserMapper */ @Autowired private UserMapper userMapper;//注入dao @Override public void addUser(User user) { userMapper.insert(user); } @Override public User getUserById(String userId) { return userMapper.selectByPrimaryKey(userId); } @Override public List<User> getAllUser() { return userMapper.getAllUser(); } }
6、在src/main/java目次下創立一個me.gacl.web.controller包,然後在me.gacl.web.controller下創立一個UserServlet,以下:
package me.gacl.web.controller; import java.io.IOException; import java.util.List; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.context.ApplicationContext; import org.springframework.web.context.support.WebApplicationContextUtils; import me.gacl.domain.User; import me.gacl.service.UserServiceI; /** * @author gacl * @WebServlet是Servlet.供給的注解,目標是將一個繼續了HttpServlet類的通俗java類標注為一個Servlet * UserServlet應用了@WebServlet標注以後,就不須要在web.xml中設置裝備擺設了 */ @WebServlet("/UserServlet") public class UserServlet extends HttpServlet { //處置營業邏輯的userService private UserServiceI userService; public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //獲得一切的用戶信息 List<User> lstUsers = userService.getAllUser(); request.setAttribute("lstUsers", lstUsers); request.getRequestDispatcher("/index.jsp").forward(request, response); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doGet(request, response); } public void init() throws ServletException { //在Servlet初始化時獲得Spring高低文對象(ApplicationContext) ApplicationContext ac = WebApplicationContextUtils.getWebApplicationContext(this.getServletContext()); //從ApplicationContext中獲得userService userService = (UserServiceI) ac.getBean("userService"); } }
7、編纂index.jsp頁面,用於展現查詢到的用戶信息,內容以下:
<%@ page language="java" pageEncoding="UTF-8"%> <%--引入JSTL焦點標簽庫 --%> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%> <!DOCTYPE html> <html> <head> <title>顯示用戶信息</title> <style type="text/css"> table,td{ border: 1px solid; border-collapse: collapse; } </style> </head> <body> <table> <tr> <td>用戶ID</td> <td>用戶名</td> <td>用戶誕辰</td> <td>工資</td> </tr> <%--遍歷lstUsers聚集中的User對象 --%> <c:forEach var="user" items="${lstUsers}"> <tr> <td>${user.userId}</td> <td>${user.userName}</td> <td>${user.userBirthday}</td> <td>${user.userSalary}</td> </tr> </c:forEach> </table> </body> </html>
8、履行maven install敕令編譯項目,然後將項目安排到tomcat辦事器中運轉,留意,因為要應用Servlet3.0,所以必需將項目安排到tomcat7.x以上的辦事器中去運轉,以下所示:
輸出地址:http://localhost:8080/spring4-mybatis3/UserServlet拜訪UserServlet,拜訪成果以下:
可以看到,t_user表中的用戶信息全體查詢出來顯示到頁面上了。如許在web辦事器中的測試也正常經由過程了。
以上就是Spring4.x與MyBatis3.x整合的全體內容了。編寫這個整合例子花了很多時光,應用Maven編譯時老是湧現莫明其妙的成績,有時刻勝利,有時刻掉敗,橫豎很莫明其妙。假如碰到履行Maven install操作不克不及正常編譯經由過程的情形:可以測驗考試采取:Maven clean→Clean項目→Maven install這三個步調去處理成績