zhangdy0 2020-05-01
项目目录
1.引入必要的依赖pom.xml
<properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.compiler.source>1.8</maven.compiler.source> <maven.compiler.target>1.8</maven.compiler.target> <spring.version>5.1.0.RELEASE</spring.version> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version> <scope>test</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <!--应用变量--> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</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-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <!--持久层支持--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-oxm</artifactId> <version>${spring.version}</version> </dependency> <!--事务--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.5.1</version> </dependency> <!--mybatis和spring的兼容包--> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>2.0.1</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.10</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.6</version> </dependency> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.9.9</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.7.25</version> </dependency> <dependency> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-core</artifactId> <version>1.3.2</version> </dependency> </dependencies> <!-- 并加入mybatis逆向插件,在build标签中--> <plugins> <plugin> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-maven-plugin</artifactId> <version>1.3.2</version> <configuration> <configurationFile>${basedir}/src/main/resources/generator/generator.xml</configurationFile> <overwrite>true</overwrite> <verbose>true</verbose> </configuration> </plugin> </plugins>
2.mybatis逆向xml配置文件generator.xml
<!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> <generatorConfiguration> <!-- 数据库驱动包位置 --> <classPathEntry location="E:\mysql-connector-java-5.1.6.jar" /> <!--<classPathEntry location="C:\Users\Administrator\.m2\repository\com\oracle\ojdbc6\11.2.0.4.0-atlassian-hosted\ojdbc6-11.2.0.4.0-atlassian-hosted.jar" />--> <context id="mysql" targetRuntime="MyBatis3"> <!-- 生成的Java文件的编码 --> <property name="javaFileEncoding" value="UTF-8"/> <!-- 格式化java代码 --> <property name="javaFormatter" value="org.mybatis.generator.api.dom.DefaultJavaFormatter"/> <!-- 格式化XML代码 --> <property name="xmlFormatter" value="org.mybatis.generator.api.dom.DefaultXmlFormatter"/> <commentGenerator> <!--是否关闭注释--> <property name="suppressAllComments" value="false" /> <!--是否关闭时间标识--> <property name="suppressDate" value="true"/> </commentGenerator> <!-- 数据库链接URL、用户名、密码 --> <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/db_test?characterEncoding=UTF-8" userId="root" password="5445abcd"> </jdbcConnection> <javaTypeResolver> <property name="forceBigDecimals" value="false" /> </javaTypeResolver> <!-- 生成模型的包名和位置 --> <javaModelGenerator targetPackage="com.wolf.model" targetProject="src/main/java"> <property name="enableSubPackages" value="false" /> <property name="trimStrings" value="true" /> </javaModelGenerator> <!-- 生成的映射文件包名和位置 --> <sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources"> <property name="enableSubPackages" value="true" /> </sqlMapGenerator> <!-- 生成mapper接口的包名和位置 --> <javaClientGenerator type="XMLMAPPER" targetPackage="com.wolf.mapper" targetProject="src/main/java"> <property name="enableSubPackages" value="true" /> </javaClientGenerator> <!-- 要生成那些表(更改tableName和domainObjectName就可以) --> <!-- 选择一个table来生成相关文件,可以有一个或多个table,必须要有table元素 选择的table会生成一下文件: 1,SQL map文件 2,生成一个主键类; 3,除了BLOB和主键的其他字段的类; 4,包含BLOB的类; 5,一个用户生成动态查询的条件类(selectByExample, deleteByExample),可选; 6,Mapper接口(可选) tableName(必要):要生成对象的表名; 注意:大小写敏感问题。正常情况下,MBG会自动的去识别数据库标识符的大小写敏感度,在一般情况下,MBG会 根据设置的schema,catalog或tablename去查询数据表,按照下面的流程: 1,如果schema,catalog或tablename中有空格,那么设置的是什么格式,就精确的使用指定的大小写格式去查询; 2,否则,如果数据库的标识符使用大写的,那么MBG自动把表名变成大写再查找; 3,否则,如果数据库的标识符使用小写的,那么MBG自动把表名变成小写再查找; 4,否则,使用指定的大小写格式查询; 另外的,如果在创建表的时候,使用的""把数据库对象规定大小写,就算数据库标识符是使用的大写,在这种情况下也会使用给定的大小写来创建表名; 这个时候,请设置delimitIdentifiers="true"即可保留大小写格式; 可选: 1,schema:数据库的schema; 2,catalog:数据库的catalog; 3,alias:为数据表设置的别名,如果设置了alias,那么生成的所有的SELECT SQL语句中,列名会变成:alias_actualColumnName 4,domainObjectName:生成的domain类的名字,如果不设置,直接使用表名作为domain类的名字;可以设置为somepck.domainName,那么会自动把domainName类再放到somepck包里面; 5,enableInsert(默认true):指定是否生成insert语句; 6,enableSelectByPrimaryKey(默认true):指定是否生成按照主键查询对象的语句(就是getById或get); 7,enableSelectByExample(默认true):MyBatis3Simple为false,指定是否生成动态查询语句; 8,enableUpdateByPrimaryKey(默认true):指定是否生成按照主键修改对象的语句(即update); 9,enableDeleteByPrimaryKey(默认true):指定是否生成按照主键删除对象的语句(即delete); 10,enableDeleteByExample(默认true):MyBatis3Simple为false,指定是否生成动态删除语句; 11,enableCountByExample(默认true):MyBatis3Simple为false,指定是否生成动态查询总条数语句(用于分页的总条数查询); 12,enableUpdateByExample(默认true):MyBatis3Simple为false,指定是否生成动态修改语句(只修改对象中不为空的属性); 13,modelType:参考context元素的defaultModelType,相当于覆盖; 14,delimitIdentifiers:参考tableName的解释,注意,默认的delimitIdentifiers是双引号,如果类似MYSQL这样的数据库,使用的是`(反引号,那么还需要设置context的beginningDelimiter和endingDelimiter属性) 15,delimitAllColumns:设置是否所有生成的SQL中的列名都使用标识符引起来。默认为false,delimitIdentifiers参考context的属性 注意,table里面很多参数都是对javaModelGenerator,context等元素的默认属性的一个复写; --> <table tableName="user" domainObjectName="User" /> </context> </generatorConfiguration>
3.db.properties
datasource.driver=com.mysql.jdbc.Driver datasource.url=jdbc:mysql://localhost:3306/db_test?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT datasource.password=root datasource.username=root
4.log4j.properties
log4j.rootLogger=info, A1 , R log4j.appender.A1=org.apache.log4j.ConsoleAppender log4j.appender.A1.layout=org.apache.log4j.PatternLayout log4j.appender.A1.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss} [%c]-[%p] %m -(:%L)%n log4j.appender.R=org.apache.log4j.RollingFileAppender log4j.appender.R.File=D:\\log\\testsocket_log.log log4j.appender.R.MaxFileSize=100KB log4j.appender.R.MaxBackupIndex=1 log4j.appender.R.layout=org.apache.log4j.PatternLayout log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n
5.springmvc.properties
view.prefix=/ view.suffix=.jsp
6.编写配置类
6.1 SpringConfig
package com.wolf.config; import com.alibaba.druid.pool.DruidDataSource; import org.mybatis.spring.SqlSessionFactoryBean; import org.mybatis.spring.annotation.MapperScan; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.ComponentScan; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.PropertySource; import org.springframework.context.support.GenericApplicationContext; import org.springframework.core.io.Resource; import javax.sql.DataSource; @Configuration //spring托管类所在的包路径 @ComponentScan({"com.wolf.service"}) //spring相关参数所在的资源文件(数据库信息文件) @PropertySource("classpath:db.properties") //代理mapper接口 @MapperScan("com.wolf.mapper") public class SpringConfig{ //数据源参数 @Value("${datasource.driver}") private String driverClass; @Value("${datasource.url}") private String url; @Value("${datasource.username}") private String username; @Value("${datasource.password}") private String password; /** * spring注入数据源 * @return */ @Bean public DruidDataSource getDataSource() { DruidDataSource dataSource = new DruidDataSource(); dataSource.setDriverClassName(driverClass); dataSource.setUrl(url); dataSource.setUsername(username); dataSource.setPassword(password); return dataSource; } //sessionFactory @Bean("sessionFactory") public SqlSessionFactoryBean getSqlSessionFactoryBean(DataSource dataSource)throws Exception{ SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean(); sessionFactory.setDataSource(dataSource); //设置,mapper.xml映射路径(默认是和mapper接口在同一路径) GenericApplicationContext context = new GenericApplicationContext(); Resource[] resources = context.getResources("classpath:mapper/*.xml"); sessionFactory.setMapperLocations(resources); return sessionFactory; } }
6.2SpringMMCConfig
package com.wolf.config; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.ComponentScan; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.PropertySource; import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer; import org.springframework.web.servlet.config.annotation.EnableWebMvc; import org.springframework.web.servlet.config.annotation.WebMvcConfigurer; import org.springframework.web.servlet.view.InternalResourceViewResolver; @EnableWebMvc @Configuration @ComponentScan("com.wolf.controller") @PropertySource("classpath:springmvc.properties") public class SpringMVCConfig implements WebMvcConfigurer { @Value("${view.prefix}") private String prefix; @Value("${view.suffix}") private String suffix; @Bean public InternalResourceViewResolver getViewResolver(){ return new InternalResourceViewResolver(prefix,suffix); } //配置静态资源可以被访问 public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) { configurer.enable(); } }
6.3MyWebAppInitializer
package com.wolf.config; import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer; /** * 配置容器初始化时需要加载的配置类 */ public class MyWebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer { @Override protected Class<?>[] getRootConfigClasses() { return new Class[]{SpringConfig.class}; } @Override protected Class<?>[] getServletConfigClasses() { return new Class[]{SpringMVCConfig.class}; } @Override protected String[] getServletMappings() { return new String[]{"/"}; } }
7.剩下的交给mybatis逆向生成