Spring4+Mybatis3+SpringMVC(基於註解)整合步聚:
一)Mybatis3測試;
二)Mybatis3+Spring4整合;
三)Mybatis3+Spring4+SpringMVC整合;
1、新建maven web項目
參考maven項目文章--Maven新建Web項目
2、添加pom.xml依賴包
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.ssm.demo1</groupId>
<artifactId>ssmdemo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>ssmdemo</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<!-- spring版本號 -->
<spring.version>4.0.2.RELEASE</spring.version>
<!-- mybatis版本號 -->
<mybatis.version>3.2.6</mybatis.version>
<!-- log4j日誌文件管理包版本 -->
<slf4j.version>1.7.7</slf4j.version>
<log4j.version>1.2.12</log4j.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<!-- 表示開發的時候引入,發佈的時候不會加載此包 -->
<scope>test</scope>
</dependency>
<!-- spring核心包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-oxm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- mybatis核心包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<!-- mybatis/spring包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.2</version>
</dependency>
<!-- 導入java ee jar 包 -->
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>7.0</version>
</dependency>
<!-- 導入Mysql數據庫連接jar包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.30</version>
</dependency>
<!-- 導入dbcp的jar包,用來在applicationContext.xml中配置數據庫 -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.2.2</version>
</dependency>
<!-- JSTL標籤類 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- 日誌文件管理包 -->
<!-- log start -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<!-- 格式化對象,方便輸出日誌 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.1.41</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency>
<!-- log end -->
<!-- 映入JSON -->
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.13</version>
</dependency>
<!-- 上傳組件包 -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.9</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.0</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
再clear下項目,就會自動從網上下載依賴包,本地maven倉庫沒有滴
3、在src/main/java/目錄下新建以下包名
com.ssm.demo2 //
com.ssm.demo2.controller //存放@controller 註解的類
com.ssm.demo2.mapper //mybatis接口類與mapper(*.xml)
com.ssm.demo2.po //實體類
com.ssm.demo2.service //業務類
4、在src/main/resources目錄新建以下包名
mybatis //存放mybatis的配置文件,在整合後,此文件下將無效
spring //存放spring的配置文件
5、在src/main/resources目錄新建
db.properties //數據庫鏈接信息配置
log4j.properties //日誌打印配置
6、db.properties添加內容以下:
jdbc.user=root
jdbc.password=root
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.jdbcUrl=jdbc:mysql:///mybatis?useUnicode=true&characterEncoding=utf8
jdbc.initPoolSize=5
jdbc.maxPoolSize=10
註明:」 ?useUnicode=true&characterEncoding=utf8」設置編碼爲utf-8
如不配置,有時數據庫編碼沒配好,就可能出現查詢中文,不出結果的狀況, 以防萬一配上!
7、Log4j.properties添加內容以下:
log4j.rootLogger=DEBUG, stdout
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n
註明:在正式發佈時,把debug改爲info,該文件放在classpath目錄下便可,框架會自動加載,
無須手工來加載!
項目結構以下:
8、新建數據庫 用Navicat for mysql 工具
8.1)、新建user數據表,結構以下
自行輸入幾條測試數據!
這樣數據庫就建好了!
9、在scr/main/resources中的mybatis目錄下
新建mybatis_cofig.xml文件並添加以下 內容:
注:在與spring整合後,該文件下的配置將交由spring管理!
<?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>
<!-- 加載數據源配置 -->
<properties resource="db.properties" />
<!-- 別名 -->
<typeAliases>
<typeAlias alias="User" type="com.ssm.demo2.po.User"/>
</typeAliases>
<!--配置jdbc -->
<environments default="development">
<environment id="development">
<transactionManager type="JDBC" />
<dataSource type="POOLED">
<property name="driver" value="${jdbc.driverClass}"/>
<property name="url" value="${jdbc.jdbcUrl}"/>
<property name="username" value="${jdbc.user}"/>
<property name="password" value="${jdbc.password}"/>
</dataSource>
</environment>
</environments>
</configuration>
10、接下來寫po實體類與mapper文件
在po包中新建User.java類:
public class User {
private int id;
private String username;
private Date password;
private char sex;
private String address;
…setter/getter方法省略
}
11、新建mapper接口類及映射文件(採用註解和代理接口方式,原始接口的可查看其餘文章)
新建映射文件
在src/main/resources/mybatis包下新建 UserMapper.xml
內容以下:
<?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.ssm.demo2.mapper.UserMapper">
<!--查找記錄 -->
<select id="findUserList" parameterType="java.lang.String" resultType="User">
select * from user where username like "%"#{value}"%"
</select>
</mapper>
在mapper包下新建UserMapper.java接口文件
內容以下:
public interface UserMapper {
public List<User>findUserList(String name) throws Exception;
}
12、配置映射文件(註冊mapper)
在mybatis_config.xml中添加以下內容:
<mappers>
<!-- 加載mapper -->
<mapper resource="mybatis/UserMapper.xml" />
</mappers>
十3、添加測試方法
在src/test/main下新建com.ssm.demo2包並新鍵 MybatisTest.java文件
內容:
public class MybatisTest {
private SqlSessionFactory factory;
{
String config ="mybatis/mybatis_config.xml";
InputStream in;
try {
in = Resources.getResourceAsStream(config);
factory=new SqlSessionFactoryBuilder().build(in);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Test
public void test() throws Exception {
System.out.println(factory);
SqlSession session=factory.openSession();
UserMapper usero=session.getMapper(UserMapper.class);
List<User>users=usero.findUserList("www");
System.out.println(users.size());
}
}
運行並獲得打印結果
上面有顯示,查詢的sql語句!如在數據中有結果,查詢無數據,可運行上面的sql來排錯!
十4、把在mybatis_config.xml中手工註冊的mapper映射,改爲,自動掃描式的
在mybatis_config.xml中的<mappers>標籤下添加以下內容
<!--
註解的方式
自動掃描mapper包下的全部文件, 加載mapper
可是mapper中.xml必須與接口名字同樣
-->
<package name="com.ssm.demo2.mapper" />
注:這樣配置必須知足二個條件就是mapper接口類與mapper映射文件(*.xml)要同名,並在同一個包下!
把resources下mybatis目錄下的UserMapper.xml複製至com.ssm.demo2.mapper包下
並在mybatis_config.xml中註釋掉
<!-- 加載mapper -->
<!-- <mapper resource="mybatis/UserMapper.xml" /> -->
結構以下:
其餘的文件無須改動,再運行,也ok!
如今SSM整合的第一個框架已搭建好!
有關詳細的mybatis請自行查閱相關文章!此文章只是針對整合!
下面在引基礎上,整合spring框架,最後再整合springmvc!!