springboot 框架 mybatis逆向工程
阿新 • • 發佈：2018-12-21
第一步建立maven專案 配置pom.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> <generatorConfiguration> <context id="DB2Tables" targetRuntime="MyBatis3"> <!-- 配置資料連線資訊 --> <!-- 去掉註釋suppressDate是去掉生成日期那行註釋suppressAllComments是去掉所有的註解 --> <commentGenerator> <property name="suppressDate" value="true" /> <property name="suppressAllComments" value="true" /> </commentGenerator> <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/ssm_crud?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT%2B8" userId="root" password="123456"> </jdbcConnection> <javaTypeResolver> <property name="forceBigDecimals" value="false" /> </javaTypeResolver> <!-- 指定java bean生成的位置 --> <javaModelGenerator targetPackage="com.db.crud.bean" targetProject=".\src\main\java"> <property name="enableSubPackages" value="true" /> <property name="trimStrings" value="true" /> </javaModelGenerator> <!-- 指定sql對映檔案生成的位置 --> <sqlMapGenerator targetPackage="mapper" targetProject=".\src\main\resources"> <property name="enableSubPackages" value="true" /> </sqlMapGenerator> <!-- 指定dao介面生成的位置 --> <javaClientGenerator type="XMLMAPPER" targetPackage="com.db.crud.dao" targetProject=".\src\main\java"> <property name="enableSubPackages" value="true" /> </javaClientGenerator> <!-- 指定每個表的生成策略 --> <table tableName="user" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table> </context> </generatorConfiguration>
第二步: 新建application.properties
server.port=8080 #DB Configuration spring.datasource.driverClassName=com.mysql.jdbc.Driver spring.datasource.url=jdbc:mysql://localhost:3306/ssm_crud?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT%2B8 spring.datasource.username=root spring.datasource.password=123456 #JPA Configuration spring.jpa.database=mysql spring.jpa.show-sql=true spring.jpa.generate-ddl=true sprign.jpa.hibernate.ddl-auto=update spring.jpa.hibernate.naming_strategy=org.hibernate.cfg.ImprovedNamingStrategy spring.mvc.view.prefix=/pages/ spring.mvc.view.suffix=.html
第三步：配置mbg.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> <generatorConfiguration> <context id="DB2Tables" targetRuntime="MyBatis3"> <!-- 配置資料連線資訊 --> <!-- 去掉註釋suppressDate是去掉生成日期那行註釋suppressAllComments是去掉所有的註解 --> <commentGenerator> <property name="suppressDate" value="true" /> <property name="suppressAllComments" value="true" /> </commentGenerator> <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/ssm_crud?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT%2B8" userId="root" password="123456"> </jdbcConnection> <javaTypeResolver> <property name="forceBigDecimals" value="false" /> </javaTypeResolver> <!-- 指定java bean生成的位置 --> <javaModelGenerator targetPackage="com.db.crud.bean" targetProject=".\src\main\java"> <property name="enableSubPackages" value="true" /> <property name="trimStrings" value="true" /> </javaModelGenerator> <!-- 指定sql對映檔案生成的位置 --> <sqlMapGenerator targetPackage="mapper" targetProject=".\src\main\resources"> <property name="enableSubPackages" value="true" /> </sqlMapGenerator> <!-- 指定dao介面生成的位置 --> <javaClientGenerator type="XMLMAPPER" targetPackage="com.db.crud.dao" targetProject=".\src\main\java"> <property name="enableSubPackages" value="true" /> </javaClientGenerator> <!-- 指定每個表的生成策略 --> <table tableName="user" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table> </context> </generatorConfiguration>
第四步：在測試包下建立mybatis逆向工程測試類 然後執行檔案
package com.db.Maven_ssm;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.internal.DefaultShellCallback;
public class MBGTest {
public static void main(String[] args) throws IOException, Exception {
List<String> warnings = new ArrayList<String>();
boolean overwrite = true;
File configFile = new File("mbg.xml");
ConfigurationParser cp = new ConfigurationParser(warnings);
Configuration config = cp.parseConfiguration(configFile);
DefaultShellCallback callback = new DefaultShellCallback(overwrite);
MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
myBatisGenerator.generate(null);
}
}
第五步：F5重新整理專案，mybatis逆向工程成功
第六步：建立springboot啟動類（注意springboot啟動類起的包名要高於其他層比如Controller,dao,pojo,service..）
package com.db;
import java.util.Properties;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import com.github.pagehelper.PageHelper;
@SpringBootApplication
//讓其掃描dao層介面
@MapperScan("com.db.crud.dao")
public class app {
//#pagehelper分頁配置
@Bean
public PageHelper pageHelper() {
PageHelper pageHelper = new PageHelper();
Properties p = new Properties();
p.setProperty("offsetAsPageNum", "true");
p.setProperty("rowBoundsWithCount", "true");
p.setProperty("reasonable", "true");
p.setProperty("dialect", "ssm_crud"); // 配置mysql資料庫
pageHelper.setProperties(p);
return pageHelper;
}
//啟動類
public static void main(String[] args) {
// TODO Auto-generated method stub
SpringApplication.run(app.class, args);
}
}
第七步：配置application.yml檔案
server:
port: 8080
spring:
profiles:
active: dev
datasource:
url: jdbc:mysql://localhost:3306/ssm_crud
username: root
password: 123456
driver-class-name: com.mysql.jdbc.Driver
# 使用druid資料來源
type: com.alibaba.druid.pool.DruidDataSource
#公共配置與profiles選擇無關 mapperLocations指的路徑是src/main/resources
mybatis:
typeAliasesPackage: com.db.crud.bean
mapperLocations: classpath:mapper/*.xml
#pagehelper分頁外掛
pagehelper:
helperDialect: mysql
reasonable: true
supportMethodsArguments: true
params: count=countSql
#注意 “：”後面跟空格，要不會報錯第八步：service.impl 實現類加入@service註解（dao層 ，service層不需要加註解了）
package com.db.crud.service.impl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.db.crud.bean.User;
import com.db.crud.dao.UserMapper;
import com.db.crud.service.UserService;
@Service("userService")
public class UserServiceImpl implements UserService{
@Autowired //這個註解是屬業spring的）或者使用@Resource裝配可以減少了與spring的耦合
UserMapper userMapper;
@Override
public int deleteByPrimaryKey(Integer id) {
// TODO Auto-generated method stub
return userMapper.deleteByPrimaryKey(id);
}
@Override
public int insert(User record) {
// TODO Auto-generated method stub
return userMapper.insert(record);
}
@Override
public int insertSelective(User record) {
// TODO Auto-generated method stub
return userMapper.insertSelective(record);
}
@Override
public User selectByPrimaryKey(Integer id) {
// TODO Auto-generated method stub
System.out.println("=============="+userMapper);
return userMapper.selectByPrimaryKey(id);
}
@Override
public int updateByPrimaryKeySelective(User record) {
// TODO Auto-generated method stub
return userMapper.updateByPrimaryKeySelective(record);
}
@Override
public int updateByPrimaryKey(User record) {
// TODO Auto-generated method stub
return userMapper.updateByPrimaryKey(record);
}
}
第九步：建立Controller類
package com.db.crud.Controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import com.db.crud.bean.User;
import com.db.crud.service.UserService;
@Controller
@RequestMapping("/user")
public class userController {
@Autowired
UserService userService;
@RequestMapping("/show")
@ResponseBody //返回json資料
public User login(Model model){
User user=userService.selectByPrimaryKey(1);
return user;
}
}
最後測試是否成功: 啟動spring
顯示資料說明成功了