MyBatis3.1.1+Spring3.1.2+Struts2.3.4.1
先来看目录结构
来看配置文件
applicationContext.xml
mybatis-config.xml
struts.xml
web.xml
--映射文件
StudentMapper.xml
ClassesMapper.xml
--dao 和 impl
IStudentDAO.java
IStudentDAOImpl.java
IStudentDAOImpl_sqlSessionDaoSupport.java
IStudentDAOImpl_sqlSessionTemplate.java
IClassesDAO.java
Student.java
Classes.java
BaseAction.java
StudentAction.java
ClassesAction.java
index.jsp
index1.jsp
先来看目录结构


来看配置文件
applicationContext.xml
<?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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd 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"> <!-- 采用c3p0数据源 这个是在企业中用的比较多的一个数据源 --> <!-- destroy-method="close"的作用是当数据库连接不使用的时候,就把该连接重新放到数据池中,方便下次使用调用 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"> <property name="driverClass" value="oracle.jdbc.driver.OracleDriver"/> <property name="jdbcUrl" value="jdbc:oracle:thin:@127.0.0.1:1521:orcl"/> <property name="user" value="luob"/> <property name="password" value="luob"/> <!-- 连接池中的最大连接数 --> <property name="maxPoolSize" value="150"/> <!-- 连接池中的最小连接数 --> <property name="minPoolSize" value="1"></property> <!-- 初始化连接池中的 连接数,取值 在 minPoolSize 和 maxPoolSize 之间,default:3--> <property name="initialPoolSize" value="3"/> <!-- 最大空闲时间,60s内该连接没有被使用则被丢弃,若为0 永不丢弃.default:0 --> <property name="maxIdleTime" value="60"/> <!-- 当连接数不够时,每次同时创建多少个连接 --> <property name="acquireIncrement" value="1"/> <!-- 每60s检查连接池中的所有空间连接,如果没有被使用,就被放弃, default:0 --> <property name="idleConnectionTestPeriod" value="60"/> </bean> <!-- 从c3p0数据源中抽取出JDBC的代理对象--> <bean id="nativeJdbcExtractor" class="org.springframework.jdbc.support.nativejdbc.C3P0NativeJdbcExtractor" lazy-init="true" /> <!--9i: org.springframework.jdbc.support.lob.OracleLobHandler --> <!--10g以后:org.springframework.jdbc.support.lob.DefaultLobHandler(mysql,DB2等都可以用这个) --> <bean id="lobHandler" class="org.springframework.jdbc.support.lob.OracleLobHandler" lazy-init="true"> <!-- 9i: 指定操作lob类型数据的jdbc代理对象 如果上面的 lobHandler 换了下面的就不需要了 --> <property name="nativeJdbcExtractor"> <ref local="nativeJdbcExtractor" /> </property> </bean> <!-- 使用jdbc 来管理事务 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"/> </bean> <!-- 配置 mybatis 的sqlSessionFactory 由 spring 的 SqlSessionFactoryBean 代理 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="configLocation" value="classpath:mybatis-config.xml"/> </bean> <!-- 使用spring 的 SqlSessionTemplate 创建一个 可以批量操作的sqlSession --> <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate"> <constructor-arg index="0" ref="sqlSessionFactory"/> </bean> <!-- =============================== --> <!-- / dao 的配置 /--> <!-- =============================== --> <bean id="studentDAO" class="com.mybatis.student.IStudentDAOImpl"> <property name="sqlSession" ref="sqlSession"/> </bean> <!-- 使用 sqlSessionTemplate 创建的 sqlSession --> <bean id="studentDAO1" class="com.mybatis.student.IStudentDAOImpl_sqlSessionTemplate"> <constructor-arg index="0" ref="sqlSessionFactory"/> </bean> <bean id="studentDAO2" class="com.mybatis.student.IStudentDAOImpl_sqlSessionDaoSupport"> <property name="sqlSessionFactory" ref="sqlSessionFactory"/> <!-- 或者 使用 sqlSessionTemplate 如果两个都配置了 会忽略 sqlSessionFactory --> </bean> <!-- 采用MapperFactoryBean --> <bean id="classesDAO" class="org.mybatis.spring.mapper.MapperFactoryBean"> <property name="mapperInterface" value="com.mybatis.classes.IClassesDAO"/> <property name="sqlSessionFactory" ref="sqlSessionFactory"/> </bean> <!-- =============================== --> <!-- / Serivce 的配置 /--> <!-- =============================== --> <bean id="studentService" class="com.mybatis.student.IStudentServiceImpl"> <property name="sudentDAO" ref="studentDAO"/> </bean> <bean id="classesService" class="com.mybatis.classes.IClassesServiceImpl"> <property name="classesDAO" ref="classesDAO"/> </bean> </beans>
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> <!-- 配置的元素顺序 properties?, settings?, typeAliases?, typeHandlers?, objectFactory?, objectWrapperFactory?, proxyFactory?, plugins?, environments?, databaseIdProvider?, mappers --> <!-- 配置mybatis的缓存,延迟加载等等一系列属性 --> <settings> <!-- 全局映射器启用缓存 --> <setting name="cacheEnabled" value="true" /> <!-- 查询时,关闭关联对象即时加载以提高性能 --> <setting name="lazyLoadingEnabled" value="true" /> <!-- 设置关联对象加载的形态,此处为按需加载字段(加载字段由SQL指 定),不会加载关联表的所有字段,以提高性能 --> <setting name="aggressiveLazyLoading" value="false" /> <!-- 对于未知的SQL查询,允许返回不同的结果集以达到通用的效果 --> <setting name="multipleResultSetsEnabled" value="true" /> <!-- 允许使用列标签代替列名 --> <setting name="useColumnLabel" value="true" /> <!-- 允许使用自定义的主键值(比如由程序生成的UUID 32位编码作为键值),数据表的PK生成策略将被覆盖 --> <!-- <setting name="useGeneratedKeys" value="true" /> --> <!-- 给予被嵌套的resultMap以字段-属性的映射支持 --> <setting name="autoMappingBehavior" value="FULL" /> <!-- 对于批量更新操作缓存SQL以提高性能 --> <setting name="defaultExecutorType" value="SIMPLE" /> <!-- 数据库超过25000秒仍未响应则超时 --> <setting name="defaultStatementTimeout" value="25000" /> </settings> <!-- 使用属性文件 而且可以在这里这是 覆盖文件中的值 --> <!-- 别名的配置 --> <typeAliases> <typeAlias type="com.mybatis.student.Student" alias="Student"/> <typeAlias type="com.mybatis.classes.Classes" alias="Classes"/> <!-- 也可以使用 包范围来配置 <package name="com.mybatis"/> --> </typeAliases> <!-- 环境的配置 --> <!-- 映射文件的配置 --> <mappers> <mapper resource="com/mybatis/student/StudentMapper.xml"/> <mapper resource="com/mybatis/classes/ClassesMapper.xml"/> </mappers> </configuration>
struts.xml
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> <package name="student" namespace="/student" extends="struts-default"> <action name="allStudent" class="com.mybatis.action.StudentAction" method="getAllStudent"> <result name="success">/index.jsp</result> </action> <action name="updateAndSelect" class="com.mybatis.action.StudentAction" method="getAllStudentAfterupdate"> <result name="success">/index.jsp</result> </action> <action name="delStudentById" class="com.mybatis.action.StudentAction" method="delStudentById"> <result name="success">/index.jsp</result> </action> </package> <package name="classes" namespace="/classes" extends="struts-default"> <action name="queryClassesById" class="com.mybatis.action.ClassesAction" method="queryClassesById"> <result name="success">/index1.jsp</result> </action> <action name="delClassesById" class="com.mybatis.action.ClassesAction" method="delClassesById"> <result name="success">/index1.jsp</result> </action> </package> </struts>
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" 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_2_5.xsd"> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>
--映射文件
StudentMapper.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.mybatis.student"> <!-- <!ELEMENT mapper ( cache-ref | cache | resultMap* | parameterMap* | sql* | insert* | update* | delete* | select* )+> --> <!-- 设置缓存 如果用户需要登录 需要设置这种类型 type=org.mybatis.caches.oscache.LoggingOSCache--> <cache eviction="FIFO" readOnly="true" size="256" flushInterval="60000"/> <!-- 定义可以重用的sql 代码片段 --> <sql id="studentColumns">sid,sname,score</sql> <!-- 自定义结果集 --> <resultMap type="Student" id="studentResultMap"> <id property="sid" column="SID"/> <result property="sname" column="SNAME"/> <result property="score" column="SCORE"/> </resultMap> <resultMap type="Student" id="studentAllResultMap"> <id property="sid" column="SID"/> <result property="sname" column="SNAME"/> <result property="major" column="MAJOR"/> <result property="birth" column="BIRTH"/> <result property="score" column="SCORE"/> <result property="cid" column="CID"/> <result property="status" column="STATUS"/> </resultMap> <!-- 只用构造函数 创建对象 对于那些 比较少的列 --> <resultMap type="Student" id="studentAndClassesResultMap"> <constructor> <idArg column="SID" javaType="int"/> <arg column="SNAME" javaType="String"/> <arg column="SCORE" javaType="float"/> </constructor> <association property="classes" javaType="Classes" resultMap="com.mybatis.classes.classesResultMap"/> </resultMap> <select id="selectStudentAndClassBySname" parameterType="String" resultMap="studentAndClassesResultMap"> select s.sid,s.sname,s.score,c.cid,c.cname,c.teacher,c.createdate from student s left join classes c on s.cid=c.cid where s.sname=#{sname} </select> <insert id="addStudentBySequence" parameterType="Student" > <selectKey keyProperty="sid" resultType="int" order="BEFORE"> select STUDENT_SEQ.nextVal from dual </selectKey> insert into student(sid,sname,major,birth,score) values (#{sid},#{sname},#{major},#{birth},#{score}) </insert> <insert id="addStudent" parameterType="Student"> insert into student(sid,sname,major,birth,score) values (#{sid},#{sname},#{major},#{birth},#{score}) </insert> <delete id="delStudentById" parameterType="int"> delete student where sid=#{sid} </delete> <select id="queryAllStudent" resultType="Student" useCache="true" flushCache="false" timeout="10000"> select * from student order by sid </select> <!-- 参数可以指定一个特定的数据类型 还可以使用自定类型处理: typeHandler=MyTypeHandler --> <select id="queryStudentByName" resultType="Student" parameterType="String"> select * from student where sname like #{property,javaType=String,jdbcType=VARCHAR} </select> <!-- 参数可以指定一个特定的数据类型 对于数字类型 ,numericScale=2 用于设置小数类型 --> <select id="queryStudentById" resultType="Student" parameterType="int"> select * from student where sid=#{property,javaType=int,jdbcType=NUMERIC} </select> <update id="updStudentById" parameterType="Student"> update student <trim prefix="SET" suffixOverrides=","> <if test="sname !=null">sname=#{sname},</if> <if test="major !=null">majoir=#{major},</if> <if test="birth !=null">birth=#{birth},</if> <if test="score !=null">score=#{score}</if> </trim> where sid=#{sid} </update> <!-- 在这里 利用了 可重用的sql代码片段 --> <select id="selectMapResult" resultMap="studentResultMap" parameterType="String"> select <include refid="studentColumns"/> from STUDENT where sname like #{sname} </select> <!-- Dynamic Sql 使用 if --> <select id="selectStudentByDynamicSql" parameterType="Student" resultType="Student"> select * from student <where> <if test="sname !=null"> sname like #{sname} </if> <if test="sid !=null"> AND sid=#{sid} </if> </where> </select> <!-- 采用 OGNL 表达式 来配置动态sql 使用trim 去掉 where 中多余的 and 或者 or where choose when otherwise--> <select id="selectStudentByDynamicSqlChoose" parameterType="Student" resultType="Student"> select * from student <trim prefix="WHERE" prefixOverrides="AND | OR "> <choose> <when test=" sname !=null and sname.length() >0 "> sname like #{sname} </when> <when test="sid !=null and sid>0"> AND sid = #{sid} </when> <otherwise> AND status='1' </otherwise> </choose> </trim> </select> <!-- 使用foreach 遍历list 只能小写--> <select id="selectStudentByIds" resultType="Student"> select * from student where sid in <foreach collection="list" item="itm" index="index" open="(" separator="," close=")"> #{itm} </foreach> </select> <!-- 使用foreach 遍历arry 只能小写 --> <select id="selectStudentByIdArray" resultType="Student"> select * from student where sid in <foreach collection="array" item="itm" index="index" open="(" separator="," close=")"> #{itm} </foreach> </select> <parameterMap type="map" id="procedureParam"> <parameter property="sid" javaType="int" jdbcType="NUMERIC" mode="IN" /> <parameter property="sname" javaType="String" jdbcType="VARCHAR" mode="IN" /> <parameter property="studentList" javaType="ResultSet" jdbcType="CURSOR" mode="OUT" resultMap="studentAllResultMap"/> </parameterMap> <!--传入map集合参数 ,调用 待用游标存储过程(先执行 修改后然后查询所有) --> <select id="getAllStudentAfterupdate" statementType="CALLABLE" useCache="false" parameterMap="procedureParam"> {call LUOB.pro_getallstudent(?,?,?)} </select> </mapper>
ClassesMapper.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"> <!--注意: 1. 这里的 namespace 要指定到 mapperInterface 的 接口类的路径 2. 这里的 statement 的id 要和 接口类中的 方法名一样 --> <mapper namespace="com.mybatis.classes.IClassesDAO"> <!-- 设置 缓存共享 --> <cache-ref namespace="com.mybatis.student"/> <resultMap type="Classes" id="classesResultMap"> <id column="CID" property="cid"/> <result column="CNAME" property="cname"/> <result column="TEACHER" property="teacher"/> <result column="CREATEDATE" property="createDate"/> </resultMap> <!-- columnPrefix:别名前缀 --> <resultMap type="Classes" id="classesAndStudentListResultMap"> <id column="CID" property="cid"/> <result column="CNAME" property="cname"/> <result column="TEACHER" property="teacher"/> <result column="CREATEDATE" property="createDate"/> <collection property="students" ofType="Student" resultMap="com.mybatis.student.studentResultMap" columnPrefix="stu_"/> </resultMap> <!-- 下面采用了 别名 stu_ 来区分列名 --> <select id="selectClassAndStudentListById" resultMap="classesAndStudentListResultMap" parameterType="int"> select c.cid, c.cname, c.teacher, c.createdate, s.sid stu_sid, s.sname stu_sname, s.score stu_score from student s right join classes c on s.cid=c.cid where c.cid=#{cid} </select> <delete id="delClassesBycid" parameterType="int"> delete classes where cid=#{cid} </delete> </mapper>
--dao 和 impl
IStudentDAO.java
package com.mybatis.student;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import com.mybatis.classes.Classes;
/**
* 手动写dao 然后注入sqlSession 或者 继承
* @author Administrator
*
*/
public interface IStudentDAO {
//手动添加 id
public int addStudent(Student student);
//自动生成 id
public int addStudentBySequence(Student student);
//根据id删除
public int delStudentById(int id);
//测试更新
public int updStudentById(Student student);
//查询所有
public List<Student> queryAllStudent();
//测试 模糊查询
public List<Student> queryStudentByName(Student name);
//测试 id查询
public Student queryStudentById(int id);
//测试 自定义 resultMap
List<Student> studentResultMap(String sname);
//测试 左连接查询
List<Student> selectStudentAndClassBySname(String sname);
//测试 右联合查询
Classes selectClassAndStudentListById(int id);
//测试动态sql
List<Student> selectStudentByDynamicSql(Student student);
//测试动态sql
List<Student> selectStudentByDynamicSqlChoose(Student student);
//测试 foreach 和集合
List<Student> selectStudentByIds(ArrayList<Integer> ids);
//测试 foreach 和 数组
List<Student> selectStudentByIdArray(Integer[] idArry);
//测试 map
Map getAllStudentAfterupdate(Map map);
}
IStudentDAOImpl.java
package com.mybatis.student;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.apache.ibatis.session.SqlSession;
import org.mybatis.spring.SqlSessionTemplate;
import com.mybatis.classes.Classes;
/**
* @author Administrator
* 如果要直接使用 mybatis 的 sqlSession 不由spring 管理 sqlSession
* 可以只注入sqlSessionFactory 然后 像mybatis 中使用 sqlSession 一样 openSession() .close()
* 否则 可以 继承 SqlSessionDaoSupport ("getSqlSession() insert/select/delete/update")
* 和 SqlSessionTemplate 得到 spring 管理的 线程安全的 sqlSession
* 或者 简单的使用XML中配置 MapperFactoryBean 这样就省去了我们 获取sqlSession了
*/
public class IStudentDAOImpl implements IStudentDAO {
private SqlSessionTemplate sqlSession;
public SqlSessionTemplate getSqlSession() {
return sqlSession;
}
public void setSqlSession(SqlSessionTemplate sqlSession) {
this.sqlSession = sqlSession;
}
public int addStudent(Student student) {
// TODO Auto-generated method stub
return getSqlSession().insert("com.mybatis.student.addStudent", student);
}
public int addStudentBySequence(Student student) {
// TODO Auto-generated method stub
return getSqlSession().insert("com.mybatis.student.addStudentBySequence", student);
}
public int delStudentById(int id) {
int rows=getSqlSession().delete("com.mybatis.student.delStudentById", id);
System.out.println(rows);
return rows;
}
public List<Student> queryAllStudent() {
List<Student> stuList=new ArrayList<Student>();
stuList=getSqlSession().selectList("com.mybatis.student.queryAllStudent");
return stuList;
}
public Student queryStudentById(int id) {
// TODO Auto-generated method stub
return (Student)getSqlSession().selectOne("com.mybatis.student.queryStudentById",id);
}
public Map getAllStudentAfterupdate(Map map) {
// TODO Auto-generated method stub
getSqlSession().selectOne("com.mybatis.student.getAllStudentAfterupdate",map);
return map;
}
public Classes selectClassAndStudentListById(int id) {
// TODO Auto-generated method stub
return (Classes)getSqlSession().selectOne("com.mybatis.classes.selectClassAndStudentListById",id);
}
public List<Student> selectStudentAndClassBySname(String sname) {
// TODO Auto-generated method stub
List<Student> stuList=new ArrayList<Student>();
stuList=getSqlSession().selectList("com.mybatis.student.selectStudentAndClassBySname",sname);
return stuList;
}
public List<Student> selectStudentByDynamicSql(Student student) {
// TODO Auto-generated method stub
return getSqlSession().selectList("com.mybatis.student.selectStudentByDynamicSql",student);
}
public List<Student> selectStudentByDynamicSqlChoose(Student student) {
// TODO Auto-generated method stub
return getSqlSession().selectList("com.mybatis.student.selectStudentByDynamicSqlChoose",student);
}
public List<Student> selectStudentByIdArray(Integer[] idArry) {
// TODO Auto-generated method stub
return getSqlSession().selectList("com.mybatis.student.selectStudentByIdArray",idArry);
}
public List<Student> selectStudentByIds(ArrayList<Integer> ids) {
// TODO Auto-generated method stub
return getSqlSession().selectList("com.mybatis.student.selectStudentByIds",ids);
}
public List<Student> studentResultMap(String sname) {
// TODO Auto-generated method stub
return getSqlSession().selectList("com.mybatis.student.selectMapResult",sname);
}
public List<Student> queryStudentByName(Student name) {
// TODO Auto-generated method stub
List<Student> stuList=new ArrayList<Student>();
stuList=getSqlSession().selectList("com.mybatis.student.queryStudentByName","%"+name+"%");
return stuList;
}
public int updStudentById(Student student) {
return getSqlSession().update("com.mybatis.student.addStudentBySequence", student);
}
}
IStudentDAOImpl_sqlSessionDaoSupport.java
package com.mybatis.student;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.mybatis.spring.support.SqlSessionDaoSupport;
import com.mybatis.classes.Classes;
/**
* @author Administrator
* 如果要直接使用 mybatis 的 sqlSession 不由spring 管理 sqlSession
* 可以只注入sqlSessionFactory 然后 像mybatis 中使用 sqlSession 一样 openSession() .close()
* 否则 可以 继承 SqlSessionDaoSupport ("getSqlSession() insert/select/delete/update")
* 和 SqlSessionTemplate 得到 spring 管理的 线程安全的 sqlSession
* 或者 简单的使用XML中配置 MapperFactoryBean 这样就省去了我们 获取sqlSession了
*/
public class IStudentDAOImpl_sqlSessionDaoSupport extends SqlSessionDaoSupport implements IStudentDAO {
public int addStudent(Student student) {
// TODO Auto-generated method stub
return getSqlSession().insert("com.mybatis.student.addStudent", student);
}
public int addStudentBySequence(Student student) {
// TODO Auto-generated method stub
return getSqlSession().insert("com.mybatis.student.addStudentBySequence", student);
}
public int delStudentById(int id) {
int rows=getSqlSession().delete("com.mybatis.student.delStudentById", id);
System.out.println(rows);
return rows;
}
public List<Student> queryAllStudent() {
List<Student> stuList=new ArrayList<Student>();
stuList=getSqlSession().selectList("com.mybatis.student.queryAllStudent");
return stuList;
}
public Student queryStudentById(int id) {
// TODO Auto-generated method stub
return (Student)getSqlSession().selectOne("com.mybatis.student.queryStudentById",id);
}
public Map getAllStudentAfterupdate(Map map) {
// TODO Auto-generated method stub
getSqlSession().selectOne("com.mybatis.student.getAllStudentAfterupdate",map);
return map;
}
public Classes selectClassAndStudentListById(int id) {
// TODO Auto-generated method stub
return (Classes)getSqlSession().selectOne("com.mybatis.classes.selectClassAndStudentListById",id);
}
public List<Student> selectStudentAndClassBySname(String sname) {
// TODO Auto-generated method stub
List<Student> stuList=new ArrayList<Student>();
stuList=getSqlSession().selectList("com.mybatis.student.selectStudentAndClassBySname",sname);
return stuList;
}
public List<Student> selectStudentByDynamicSql(Student student) {
// TODO Auto-generated method stub
return getSqlSession().selectList("com.mybatis.student.selectStudentByDynamicSql",student);
}
public List<Student> selectStudentByDynamicSqlChoose(Student student) {
// TODO Auto-generated method stub
return getSqlSession().selectList("com.mybatis.student.selectStudentByDynamicSqlChoose",student);
}
public List<Student> selectStudentByIdArray(Integer[] idArry) {
// TODO Auto-generated method stub
return getSqlSession().selectList("com.mybatis.student.selectStudentByIdArray",idArry);
}
public List<Student> selectStudentByIds(ArrayList<Integer> ids) {
// TODO Auto-generated method stub
return getSqlSession().selectList("com.mybatis.student.selectStudentByIds",ids);
}
public List<Student> studentResultMap(String sname) {
// TODO Auto-generated method stub
return getSqlSession().selectList("com.mybatis.student.selectMapResult",sname);
}
public List<Student> queryStudentByName(Student name) {
// TODO Auto-generated method stub
List<Student> stuList=new ArrayList<Student>();
stuList=getSqlSession().selectList("com.mybatis.student.queryStudentByName","%"+name+"%");
return stuList;
}
public int updStudentById(Student student) {
return getSqlSession().update("com.mybatis.student.addStudentBySequence", student);
}
}
IStudentDAOImpl_sqlSessionTemplate.java
package com.mybatis.student;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.apache.ibatis.session.ExecutorType;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.support.SqlSessionDaoSupport;
import com.mybatis.classes.Classes;
/**
* @author Administrator
* 如果要直接使用 mybatis 的 sqlSession 不由spring 管理 sqlSession
* 可以只注入sqlSessionFactory 然后 像mybatis 中使用 sqlSession 一样 openSession() .close()
* 否则 可以 继承 SqlSessionDaoSupport ("getSqlSession() insert/select/delete/update")
* 和 SqlSessionTemplate 得到 spring 管理的 线程安全的 sqlSession
* 或者 简单的使用XML中配置 MapperFactoryBean 这样就省去了我们 获取sqlSession了
*/
public class IStudentDAOImpl_sqlSessionTemplate extends SqlSessionTemplate implements IStudentDAO {
//同样是 创建一个 可以批量操作的 sqlSession
public IStudentDAOImpl_sqlSessionTemplate(
SqlSessionFactory sqlSessionFactory) {
super(sqlSessionFactory);
// TODO Auto-generated constructor stub
}
public int addStudent(Student student) {
// TODO Auto-generated method stub
return this.insert("com.mybatis.student.addStudent", student);
}
public int addStudentBySequence(Student student) {
// TODO Auto-generated method stub
return this.insert("com.mybatis.student.addStudentBySequence", student);
}
public int delStudentById(int id) {
int rows=this.delete("com.mybatis.student.delStudentById", id);
System.out.println(rows);
return rows;
}
public List<Student> queryAllStudent() {
List<Student> stuList=new ArrayList<Student>();
stuList=this.selectList("com.mybatis.student.queryAllStudent");
return stuList;
}
public Student queryStudentById(int id) {
// TODO Auto-generated method stub
return (Student)this.selectOne("com.mybatis.student.queryStudentById",id);
}
public Map getAllStudentAfterupdate(Map map) {
// TODO Auto-generated method stub
this.selectOne("com.mybatis.student.getAllStudentAfterupdate",map);
return map;
}
public Classes selectClassAndStudentListById(int id) {
// TODO Auto-generated method stub
return (Classes)this.selectOne("com.mybatis.classes.selectClassAndStudentListById",id);
}
public List<Student> selectStudentAndClassBySname(String sname) {
// TODO Auto-generated method stub
List<Student> stuList=new ArrayList<Student>();
stuList=this.selectList("com.mybatis.student.selectStudentAndClassBySname",sname);
return stuList;
}
public List<Student> selectStudentByDynamicSql(Student student) {
// TODO Auto-generated method stub
return this.selectList("com.mybatis.student.selectStudentByDynamicSql",student);
}
public List<Student> selectStudentByDynamicSqlChoose(Student student) {
// TODO Auto-generated method stub
return this.selectList("com.mybatis.student.selectStudentByDynamicSqlChoose",student);
}
public List<Student> selectStudentByIdArray(Integer[] idArry) {
// TODO Auto-generated method stub
return this.selectList("com.mybatis.student.selectStudentByIdArray",idArry);
}
public List<Student> selectStudentByIds(ArrayList<Integer> ids) {
// TODO Auto-generated method stub
return this.selectList("com.mybatis.student.selectStudentByIds",ids);
}
public List<Student> studentResultMap(String sname) {
// TODO Auto-generated method stub
return this.selectList("com.mybatis.student.selectMapResult",sname);
}
public List<Student> queryStudentByName(Student name) {
// TODO Auto-generated method stub
List<Student> stuList=new ArrayList<Student>();
stuList=this.selectList("com.mybatis.student.queryStudentByName","%"+name+"%");
return stuList;
}
public int updStudentById(Student student) {
return this.update("com.mybatis.student.addStudentBySequence", student);
}
}
IClassesDAO.java
package com.mybatis.classes;
/**
* 使用 MapperFactoryBean 来管理 sqlSession
* @author Administrator
*
*/
public interface IClassesDAO {
// 也可以在这里使用注解配置 sql语句 这样就不用写 映射文件了
Classes selectClassAndStudentListById(int cid);
int delClassesBycid(int cid);
}
Student.java
package com.mybatis.student;
import java.io.Serializable;
import java.util.Date;
import com.mybatis.classes.Classes;
public class Student implements Serializable {
private int sid;
private String sname;
private String major;
private Date birth;
private float score;
private int cid;
private int status;
//get set()
}
Classes.java
package com.mybatis.classes;
import java.sql.Date;
import java.util.List;
import com.mybatis.student.Student;
public class Classes {
private int cid;
private String cname;
private String teacher;
private Date createDate;
private List<Student> students;
//get set
}
BaseAction.java
package com.mybatis.common;
import java.util.Map;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts2.ServletActionContext;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class BaseAction extends ActionSupport{
public Object getServiceBean(String beanId){
ServletContext sc=ServletActionContext.getServletContext();
WebApplicationContext ctx=WebApplicationContextUtils.getWebApplicationContext(sc);
return ctx.getBean(beanId);
}
public HttpServletRequest getRequest(){
return ServletActionContext.getRequest();
}
public HttpServletResponse getResponse(){
return ServletActionContext.getResponse();
}
public Map<String, Object> getSession() {
ActionContext act=ActionContext.getContext();
return act.getSession();
}
}
StudentAction.java
package com.mybatis.action;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import com.mybatis.common.BaseAction;
import com.mybatis.student.IStudentService;
import com.mybatis.student.Student;
public class StudentAction extends BaseAction {
private Student student;
private List<Student> stuList;
public String getAllStudent(){
try {
IStudentService stuService=(IStudentService)this.getServiceBean("studentService");
stuList=stuService.queryAllStudent();
} catch (Exception e) {
e.printStackTrace();
}
return SUCCESS;
}
public String delStudentById(){
try {
HttpServletRequest request=this.getRequest();
IStudentService stuService=(IStudentService)this.getServiceBean("studentService");
int rows=stuService.delStudentById(student.getSid());
if(rows>0){
request.setAttribute("msg", "<script type='text/javascript'>alert('删除成功!');</script>");
}else{
request.setAttribute("msg", "<script type='text/javascript'>alert('删除失败!');</script>");
}
} catch (Exception e) {
e.printStackTrace();
}
return getAllStudent();
}
public String queryStudentById(){
try {
IStudentService stuService=(IStudentService)this.getServiceBean("studentService");
student=stuService.queryStudentById(student.getSid());
} catch (Exception e) {
e.printStackTrace();
}
return SUCCESS;
}
public String getAllStudentAfterupdate(){
try {
Map map=new HashMap();
map.put("sid", student.getSid());
map.put("sname", student.getSname());
IStudentService stuService=(IStudentService)this.getServiceBean("studentService");
map=stuService.getAllStudentAfterupdate(map);
stuList=(List<Student>)map.get("studentList");
} catch (Exception e) {
e.printStackTrace();
}
return SUCCESS;
}
public List<Student> getStuList() {
return stuList;
}
public void setStuList(List<Student> stuList) {
this.stuList = stuList;
}
public Student getStudent() {
return student;
}
public void setStudent(Student student) {
this.student = student;
}
}
ClassesAction.java
package com.mybatis.action;
import javax.servlet.http.HttpServletRequest;
import com.mybatis.classes.Classes;
import com.mybatis.classes.IClassesService;
import com.mybatis.common.BaseAction;
public class ClassesAction extends BaseAction {
private Classes classes;
/**
* 根据 id 删除
* @return
*/
public String delClassesById(){
try {
HttpServletRequest request=this.getRequest();
IClassesService classesService=(IClassesService)this.getServiceBean("classesService");
int rows=classesService.delClassesBycid(classes.getCid());
if(rows>0){
request.setAttribute("msg", "<script type='text/javascript'>alert('删除成功!');</script>");
}else{
request.setAttribute("msg", "<script type='text/javascript'>alert('删除失败!');</script>");
}
} catch (Exception e) {
e.printStackTrace();
}
return SUCCESS;
}
/**
* 测试 右连接查询 会查询出 班级中拥有的学生
* @return
*/
public String queryClassesById(){
try {
IClassesService classesService=(IClassesService)this.getServiceBean("classesService");
classes=classesService.selectClassAndStudentListById(classes.getCid());
} catch (Exception e) {
e.printStackTrace();
}
return SUCCESS;
}
public Classes getClasses() {
return classes;
}
public void setClasses(Classes classes) {
this.classes = classes;
}
}
index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>MyBatis3.11 + Spring3.1.2 + Struts2</title>
</head>
<body>
<form action="${pageContext.request.contextPath}/student/updateAndSelect.action" method="post">
<table cellpadding="0" cellspacing="0" bgcolor="#F4F4F4">
<tr>
<td>学生id</td>
<td><input type="text" name="student.sid"/></td>
</tr>
<tr>
<td>学生姓名</td>
<td><input type="text" name="student.sname"/></td>
</tr>
</table>
<input type="submit" value="修改姓名后测试procedure"/>
</form>
<input type="button" οnclick="window.location.href='${pageContext.request.contextPath}/student/allStudent.action'" value="获取所有学生"/><br/>
<c:if test="${fn:length(stuList)>0}">
<table style="border: 1px solid blue;" border="1px" cellspacing="0" bgcolor="#F4F4F4">
<tr align="center">
<td width="100px">sid</td>
<td width="100px">sname</td>
<td width="100px">major</td>
<td width="150px">birth</td>
<td width="100px">score</td>
<td width="100px">操作</td>
</tr>
<c:forEach items="${stuList}" var="student">
<tr>
<td width="100px">${student.sid}</td>
<td width="100px">${student.sname}</td>
<td width="100px">${student.major}</td>
<td width="180px"><fmt:formatDate value="${student.birth}" pattern="yyyy-MM-dd HH:mm:ss"/><br></td>
<td width="100px">${student.score}</td>
<td><input type="button" οnclick="window.location.href='${pageContext.request.contextPath}/student/delStudentById.action?student.sid=12'" value="删除"/> </td>
</tr>
</c:forEach>
</table>
</c:if>
${msg}
</body>
</html>
index1.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>MyBatis3.11 + Spring3.1.2 + Struts2</title>
</head>
<body>
<form action="${pageContext.request.contextPath}/classes/queryClassesById.action" method="post">
<table cellpadding="0" cellspacing="0" bgcolor="#F4F4F4">
<tr>
<td>班级id</td>
<td><input type="text" name="classes.cid"/></td>
</tr>
</table>
<input type="submit" value="查询"/>
</form>
<input type="button" οnclick="window.location.href='${pageContext.request.contextPath}/classes/allStudent.action'" value="获取所有学生"/><br/>
<table style="border: 1px solid blue;" border="1px" cellspacing="0" bgcolor="#F4F4F4">
<tr>
<td width="100px">cid</td>
<td width="100px">cname</td>
<td width="100px">teacher</td>
<td width="100px">crateDate</td>
<td width="100px">操作</td>
</tr>
<tr>
<td>${classes.cid}</td>
<td>${classes.cname}</td>
<td>${classes.teacher}</td>
<td>${classes.createDate}</td>
<td width="100px"><input type="button" οnclick="window.location.href='${pageContext.request.contextPath}/classes/delClassesById.action?classes.cid=12'" value="删除"/> </td></td>
</tr>
<c:if test="${fn:length(classes.students)>0}">
<tr align="center">
<td width="100px">sid</td>
<td width="100px">sname</td>
<td width="150px">birth</td>
<td width="100px">score</td>
<td width="100px"></td>
</tr>
<c:forEach items="${classes.students}" var="student">
<tr>
<td width="100px">${student.sid}</td>
<td width="100px">${student.sname}</td>
<td width="180px"><fmt:formatDate value="${student.birth}" pattern="yyyy-MM-dd HH:mm:ss"/><br></td>
<td width="100px">${student.score}</td>
<td><input type="button" οnclick="window.location.href='${pageContext.request.contextPath}/student/delStudentById.action?student.sid=12'" value="删除"/> </td>
</tr>
</c:forEach>
</c:if>
</table>
${msg}
</body>
</html>