02_MyBatis项目结构，所需jar包，ehcache.xml配置，log4j.properties,sqlMapConfig.xml配置，SqlMapGenerator.xml配置

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">

</settings>

<!--

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

-->

</typeAliases>

</dataSource>

</environment>

</environments>

<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">

<classPathEntrylocation="E:\MyEclipse10\MyBatis\lib\mysql-connector-java-5.0.8-bin.jar"/>

<contextid="context1">

<propertyname="suppressAllComments"value="true"/>

</commentGenerator>

<jdbcConnection

driverClass="com.mysql.jdbc.Driver"

connectionURL="jdbc:mysql://127.0.0.1:3306/mybatis"

userId="root"

password="123456"/>

<javaModelGeneratortargetPackage="com.rl.model1"

targetProject="mybatis0420"/>

<sqlMapGeneratortargetPackage="com.rl.mapper"

targetProject="mybatis0420"/>

<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();

}

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