项目结构（所需jar包，配置文件）
sqlMapConfig.xml的配置内容如下：
<?xmlversion="1.0"encoding="UTF-8"?> <!DOCTYPEconfiguration PUBLIC"-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <!--开启延迟加载 --> <settings> <!--全局的延迟加载的开关必须要开启 --> <setting name="lazyLoadingEnabled" value="true"/> <!--积极加载设置成false --> <setting name="aggressiveLazyLoading" value="false"/> <!--开启二级缓存,缓存中只要是需要配置的针对的都是二级缓存 --> <setting name="cacheEnabled" value="true"/> </settings>
<typeAliases> <!-- 自定义别名： type:要定义别名的数据类型 alias：别名的内容 --> <!-- 非自定义别名： 在jdk中的所用的类的别名直接只用类名即可（不区分大小写） 如果是基本数据类型的包装类还可以使用基本数据类型的名字 --> <typeAlias type="com.rl.model1.QueryCondition" alias="qc"/> <typeAlias type="com.rl.model1.Person" alias="person"/> </typeAliases>
<!--数据库的环境的配置 --> <environments default="development"> <environment id="development"> <transactionManager type="JDBC"/> <dataSource type="POOLED"> <property name="driver" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql://localhost:3306/mybatis"/> <property name="username" value="root"/> <property name="password" value="123456"/> </dataSource> </environment> </environments>
<!--集中管理表的映射文件 --> <mappers> <mapperresource="com/rl/mapper/PersonTestMapper.xml"/> <mapperresource="com/rl/mapper/PersonMapper.xml"/> <mapperresource="com/rl/mapper/RoleMapper.xml"/> <mapperresource="com/rl/mapper/OrdersMapper.xml"/> <mapperresource="com/rl/mapper/OrderDetailMapper.xml"/> </mappers> </configuration> |
sqlMapGenerator.xml的配置如下：
<?xmlversion="1.0"encoding="UTF-8"?> <!DOCTYPEgeneratorConfigurationPUBLIC"-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN""http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> <generatorConfiguration> <!--指定mysql的驱动包的路径，不要放在中文路径下 --> <classPathEntrylocation="E:\MyEclipse10\MyBatis\lib\mysql-connector-java-5.0.8-bin.jar"/> <!--配置数据源和生成的代码所存放的位置 --> <contextid="context1"> <commentGenerator> <!--去除自动生成的注释 --> <propertyname="suppressAllComments"value="true"/> </commentGenerator>
<jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://127.0.0.1:3306/mybatis" userId="root" password="123456"/> <!--所生成的实体类的位置默认资源包src --> <javaModelGeneratortargetPackage="com.rl.model1" targetProject="mybatis0420"/> <!--所生成的sqlMap的影射文件的位置,默认资源包src --> <sqlMapGeneratortargetPackage="com.rl.mapper" targetProject="mybatis0420"/>
<!--为哪些表生成代码 tableName:表名 schema:不用填写,其余属性是禁用例子查询的生成 --> <tableschema=""tableName="role"enableCountByExample="false" enableUpdateByExample="false"enableDeleteByExample="false" enableSelectByExample="false"selectByExampleQueryId="false"/>
<tableschema=""tableName="person_role"enableCountByExample="false" enableUpdateByExample="false"enableDeleteByExample="false" enableSelectByExample="false"selectByExampleQueryId="false"/> </context> </generatorConfiguration> |
log4j.properties的配置内容如下：
log4j.rootLogger=DEBUG,Console #Console log4j.appender.Console=org.apache.log4j.ConsoleAppender log4j.appender.Console.layout=org.apache.log4j.PatternLayout log4j.appender.Console.layout.ConversionPattern=%d[%t]%-5p[%c]-%m%n log4j.logger.java.sql.ResultSet=INFO log4j.logger.org.apache=INFO log4j.logger.java.sql.Connection=DEBUG log4j.logger.java.sql.Statement=DEBUG log4j.logger.java.sql.PreparedStatement=DEBUG |
ehcache.xml的配置内容如下：
<ehcachexmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:noNamespaceSchemaLocation="../config/ehcache.xsd">
<diskStorepath="java.io.tmpdir"/> <defaultCache maxElementsInMemory="10000" eternal="false" timeToIdleSeconds="120" timeToLiveSeconds="120" maxElementsOnDisk="10000000" diskExpiryThreadIntervalSeconds="120" memoryStoreEvictionPolicy="LRU"> <persistencestrategy="localTempSwap"/> </defaultCache> </ehcache> |
4 数据库表
创建数据库：create databasemybatis; use mybatis;
订单.sql
/*==============================================================*/ /* DBMS name: MySQL 5.0 */ /* Created on: 2014/8/7 15:34:20 */ /*==============================================================*/
drop table if exists ORDERS;
drop table if exists ORDER_DETAIL;
/*==============================================================*/ /* Table: ORDERS */ /*==============================================================*/ create table ORDERS ( ORDER_ID int(10) not null auto_increment, PERSON_ID int(10), TOTAL_PRICE float(10,2), ADDR varchar(50), primary key (ORDER_ID) );
/*==============================================================*/ /* Table: ORDER_DETAIL */ /*==============================================================*/ create table ORDER_DETAIL ( DETAIL_ID int(10) not null auto_increment, ORDER_ID int(10), PRICE float(10,2), QUANTITY int(10), ITEM_NAME varchar(10), primary key (DETAIL_ID) ); |
角色表.sql
/*==============================================================*/ /* DBMS name: MySQL 5.0 */ /* Created on: 2014/8/7 16:28:01 */ /*==============================================================*/
drop table if exists PERSON_ROLE;
drop table if exists ROLE;
/*==============================================================*/ /* Table: PERSON_ROLE */ /*==============================================================*/ create table PERSON_ROLE ( PERSON_ID int(10), ROLE_ID int(10) );
/*==============================================================*/ /* Table: ROLE */ /*==============================================================*/ create table ROLE ( ROLE_ID int(10) not null auto_increment, ROLE_NAME varchar(10), DESCRIPT varchar(50), primary key (ROLE_ID) ); |
人员表.sql
/*==============================================================*/ /* DBMS name: MySQL 5.0 */ /* Created on: 2014/8/7 9:59:18 */ /*==============================================================*/
drop table if exists PERSON;
/*==============================================================*/ /* Table: PERSON */ /*==============================================================*/ create table PERSON ( PERSON_ID int(10) not null auto_increment, NAME varchar(10), GENDER varchar(1), PERSON_ADDR varchar(50), BIRTHDAY date, primary key (PERSON_ID) ); |
人员测试表.sql
/*==============================================================*/ /* DBMS name: MySQL 5.0 */ /* Created on: 2014/8/7 9:15:56 */ /*==============================================================*/
drop table if exists PERSON_TEST;
/*==============================================================*/ /* Table: PERSON_TEST */ /*==============================================================*/ create table PERSON_TEST ( ID int(10) not null auto_increment, NAME varchar(10), GENDER varchar(1), ADDRESS varchar(50), BIRTHDAY date, primary key (ID) ); |
7JavaBean的编写
Person.java
package com.rl.model;
import java.util.Date; publicclass Person implements Serializable{ private Integerid; private Stringname; private Stringgender; private Stringaddress; private Datebirthday;
public Integer getId() { returnid; }
publicvoid setId(Integer id) { this.id = id; }
public String getName() { returnname; }
publicvoid setName(String name) { this.name = name; }
public String getGender() { returngender; }
publicvoid setGender(String gender) { this.gender = gender; }
public String getAddress() { returnaddress; }
publicvoid setAddress(String address) { this.address = address; }
public DategetBirthday() { returnbirthday; }
publicvoid setBirthday(Date birthday) { this.birthday = birthday; }
@Override public String toString() { return"Person [id=" +id +", name=" +name +", gender=" +gender +", address=" +address +", birthday=" +birthday +"]"; } } |
OrderDetail.java
package com.rl.model1;
publicclass OrderDetail { private IntegerdetailId; private IntegerorderId; private Floatprice; private Integerquantity; private StringitemName;
public Integer getDetailId() { returndetailId; }
publicvoid setDetailId(Integer detailId) { this.detailId = detailId; }
public Integer getOrderId() { returnorderId; }
publicvoid setOrderId(Integer orderId) { this.orderId = orderId; }
public Float getPrice() { returnprice; }
publicvoid setPrice(Float price) { this.price = price; }
public Integer getQuantity() { returnquantity; }
publicvoid setQuantity(Integer quantity) { this.quantity = quantity; }
public String getItemName() { returnitemName; }
publicvoid setItemName(String itemName) { this.itemName = itemName; } } |
Orders.java
package com.rl.model1;
import java.util.List; publicclass Orders { private IntegerorderId; private IntegerpersonId; private FloattotalPrice; private Stringaddr; private List<OrderDetail>detailList; private Personperson;
public Person getPerson() { returnperson; }
publicvoid setPerson(Person person) { this.person = person; }
public List<OrderDetail> getDetailList() { returndetailList; }
publicvoid setDetailList(List<OrderDetail> detailList) { this.detailList = detailList; }
public Integer getOrderId() { returnorderId; }
publicvoid setOrderId(Integer orderId) { this.orderId = orderId; }
public Integer getPersonId() { returnpersonId; }
publicvoid setPersonId(Integer personId) { this.personId = personId; }
public Float getTotalPrice() { returntotalPrice; }
publicvoid setTotalPrice(Float totalPrice) { this.totalPrice = totalPrice; }
public String getAddr() { returnaddr; }
publicvoid setAddr(String addr) { this.addr = addr; } } |
Person.java
package com.rl.model1;
import java.io.Serializable; import java.util.Date; import java.util.List;
import javax.management.relation.Role;
/** *做二级缓存的时候需要实现Serializable */ public class Person implements Serializable { private static final long serialVersionUID = 7728191033619971201L; private Integer personId; private String name; private String gender; private String personAddr; private Date birthday; private List<Orders> ordersList; private List<Role> roleList;
public List<Role> getRoleList() { return roleList; }
public void setRoleList(List<Role> roleList) { this.roleList = roleList; }
public List<Orders> getOrdersList() { return ordersList; }
public void setOrdersList(List<Orders> ordersList) { this.ordersList = ordersList; }
public Integer getPersonId() { return personId; }
public void setPersonId(Integer personId) { this.personId = personId; }
public String getName() { return name; }
public void setName(String name) { this.name = name; }
public String getGender() { return gender; }
public void setGender(String gender) { this.gender = gender; }
public String getPersonAddr() { return personAddr; }
public void setPersonAddr(String personAddr) { this.personAddr = personAddr; }
public Date getBirthday() { return birthday; }
public void setBirthday(Date birthday) { this.birthday = birthday; }
@Override public String toString() { return "Person [personId=" + personId + ", name=" + name + ", gender=" + gender + ", personAddr=" + personAddr + ", birthday=" + birthday + "]"; } } |
PersonRole.java
package com.rl.model1;
publicclassPersonRole { private IntegerpersonId;
private IntegerroleId;
public Integer getPersonId() { returnpersonId; }
publicvoid setPersonId(Integer personId) { this.personId = personId; }
public Integer getRoleId() { returnroleId; }
publicvoid setRoleId(Integer roleId) { this.roleId = roleId; } } |
QueryCondition.java
package com.rl.model1;
import java.util.Date;
publicclassQueryCondition { private Stringname; private Stringgender; private Datebirthday;
public String getName() { returnname; }
publicvoid setName(String name) { this.name = name; }
public String getGender() { returngender; }
publicvoid setGender(String gender) { this.gender = gender; }
public Date getBirthday() { returnbirthday; }
publicvoid setBirthday(Date birthday) { this.birthday = birthday; } } |
Role.java
package com.rl.model1;
import java.util.List;
publicclass Role { private IntegerroleId; private StringroleName; private Stringdescript; private List<Person>personList;
public List<Person> getPersonList() { returnpersonList; }
publicvoid setPersonList(List<Person> personList) { this.personList = personList; }
public Integer getRoleId() { returnroleId; }
publicvoid setRoleId(Integer roleId) { this.roleId = roleId; }
public String getRoleName() { returnroleName; }
publicvoid setRoleName(String roleName) { this.roleName = roleName; }
public String getDescript() { returndescript; }
publicvoid setDescript(String descript) { this.descript = descript; } } |
SqlHelper.java
package com.rl.util;
import java.util.Date; import java.util.Map;
import org.apache.ibatis.jdbc.SqlBuilder;
public class SqlHelper {
public String getSql(Map<String,Object> map) { //获得所有可能传递过来的参数 String name = (String) map.get("name"); String gender = (String) map.get("gender"); String personAddr = (String) map.get("personAddr"); Date birthday = (Date) map.get("birthday");
SqlBuilder.BEGIN(); //指定所有的列 SqlBuilder.SELECT("*"); SqlBuilder.FROM("person"); if(name != null){ //在SqlBuilder中不支持${} SqlBuilder.WHERE("name like '%"+name+"%'"); } if(gender != null){ SqlBuilder.WHERE("gender = #{gender}"); } if(personAddr != null){ //在SqlBuilder中不支持${} SqlBuilder.WHERE("person_addr like '%"+personAddr+"%'"); } if(birthday != null){ SqlBuilder.WHERE("birthday < #{birthday}"); }
return SqlBuilder.SQL(); } } |
