spring boot整合mybatis+mybatis-plus的示例代码

<dependency> <groupId>com.baomidou</groupId> <artifactId>mybatisplus-spring-boot-starter</artifactId> <version>1.0.4</version> </dependency> <dependency> <groupId>com.baomidou</groupId> <artifactId>mybatis-plus</artifactId> <version>2.1.2</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency>   <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.3</version> </dependency>  <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.1</version> </dependency>

server: port: 8080 #spring spring: devtools: restart: enabled: true #这里是为了热部署的，与mybatis是无关的 #DATABASE CONFIG datasource: driver-class-name: com.mysql.jdbc.Driver username: root password: root url: jdbc:mysql://mysqldb:3306/tdx_shop?useUnicode=true&characterEncoding=utf-8 type: com.alibaba.druid.pool.DruidDataSource #这里是配置druid连接池，以下都是druid的配置信息 filters: stat,wall,log4j maxActive: 20 initialSize: 1 maxWait: 60000 minIdle: 1 timeBetweenEvictionRunsMillis: 60000 minEvictableIdleTimeMillis: 300000 validationQuery: select 'x' testWhileIdle: true testOnBorrow: false testOnReturn: false poolPreparedStatements: true maxOpenPreparedStatements: 20 connection-properties: druid.stat.merggSql=ture;druid.stat.slowSqlMillis=5000 #mybatis mybatis: mapper-locations: classpath*:/mapper/**Mapper.xml #把xml文件放在com.XX.mapper.*中可能会出现找到的问题，这里把他放在resource下的mapper中 #实体扫描，多个package用逗号或者分号分隔 typeAliasesPackage: com.tdx.account_service.entity #这里是实体类的位置 configuration: map-underscore-to-camel-case: true cache-enabled: false #logging logging: level: warn

package com.tdx.account_service.config; import com.alibaba.druid.pool.DruidDataSource; import com.alibaba.druid.support.http.StatViewServlet; import com.alibaba.druid.support.http.WebStatFilter; import com.baomidou.mybatisplus.MybatisConfiguration; import com.baomidou.mybatisplus.MybatisXMLLanguageDriver; import com.baomidou.mybatisplus.entity.GlobalConfiguration; import com.baomidou.mybatisplus.enums.DBType; import com.baomidou.mybatisplus.plugins.PaginationInterceptor; import com.baomidou.mybatisplus.plugins.PerformanceInterceptor; import com.baomidou.mybatisplus.plugins.parser.ISqlParser; import com.baomidou.mybatisplus.plugins.parser.ISqlParserFilter; import com.baomidou.mybatisplus.plugins.parser.tenant.TenantHandler; import com.baomidou.mybatisplus.plugins.parser.tenant.TenantSqlParser; import com.baomidou.mybatisplus.spring.MybatisSqlSessionFactoryBean; import com.baomidou.mybatisplus.spring.boot.starter.SpringBootVFS; import com.baomidou.mybatisplus.toolkit.PluginUtils; import net.sf.jsqlparser.expression.Expression; import net.sf.jsqlparser.expression.LongValue; import org.apache.ibatis.mapping.DatabaseIdProvider; import org.apache.ibatis.mapping.MappedStatement; import org.apache.ibatis.plugin.Interceptor; import org.apache.ibatis.reflection.MetaObject; import org.mybatis.spring.annotation.MapperScan; import org.mybatis.spring.boot.autoconfigure.MybatisProperties; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.bind.RelaxedPropertyResolver; import org.springframework.boot.context.properties.EnableConfigurationProperties; import org.springframework.boot.web.servlet.FilterRegistrationBean; import org.springframework.boot.web.servlet.ServletRegistrationBean; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.core.env.Environment; import org.springframework.core.io.DefaultResourceLoader; import org.springframework.core.io.ResourceLoader; import org.springframework.util.ObjectUtils; import org.springframework.util.StringUtils; import javax.sql.DataSource; import java.sql.SQLException; import java.util.ArrayList; import java.util.List; /** * code is far away from bug with the animal protecting * ┏┓　　　┏┓ * ┏┛┻━━━┛┻┓ * ┃　　　　　　　┃ * ┃　　　━　　　┃ * ┃　┳┛　┗┳　┃ * ┃　　　　　　　┃ * ┃　　　┻　　　┃ * ┃　　　　　　　┃ * ┗━┓　　　┏━┛ * 　　┃　　　┃神兽保佑 * 　　┃　　　┃代码无BUG！ * 　　┃　　　┗━━━┓ * 　　┃　　　　　　　┣┓ * 　　┃　　　　　　　┏┛ * 　　┗┓┓┏━┳┓┏┛ * 　　　┃┫┫　┃┫┫ * 　　　┗┻┛　┗┻┛ * * * @Description : MybatisPlus配置 * --------------------------------- * @Author : Liang.Guangqing * @Date : Create in 2017/9/19 13:54 */ @Configuration @EnableConfigurationProperties(MybatisProperties.class) public class MybatisPlusConfig { @Autowired private Environment environment; private RelaxedPropertyResolver propertyResolver; @Autowired private DataSource dataSource; @Autowired private MybatisProperties properties; @Autowired private ResourceLoader resourceLoader = new DefaultResourceLoader(); @Autowired(required = false) private Interceptor[] interceptors; @Autowired(required = false) private DatabaseIdProvider databaseIdProvider; /** * @Description : mybatis-plus SQL执行效率插件【生产环境可以关闭】 * --------------------------------- * @Author : Liang.Guangqing * @Date : Create in 2017/9/19 13:57 */ @Bean public PerformanceInterceptor performanceInterceptor() { return new PerformanceInterceptor(); } /** * 配置DataSource * @return * @throws SQLException */ @Bean public DataSource druidDataSource() throws SQLException { this.propertyResolver = new RelaxedPropertyResolver(environment, "spring.datasource."); System.out.println("====================注入druid!===================="); DruidDataSource datasource = new DruidDataSource(); datasource.setUrl(propertyResolver.getProperty("url")); datasource.setDriverClassName(propertyResolver.getProperty("driver-class-name")); datasource.setUsername(propertyResolver.getProperty("username")); datasource.setPassword(propertyResolver.getProperty("password")); datasource.setInitialSize(Integer.valueOf(propertyResolver.getProperty("initial-size"))); datasource.setMinIdle(Integer.valueOf(propertyResolver.getProperty("min-idle"))); datasource.setMaxWait(Long.valueOf(propertyResolver.getProperty("max-wait"))); datasource.setMaxActive(Integer.valueOf(propertyResolver.getProperty("max-active"))); datasource.setMinEvictableIdleTimeMillis(Long.valueOf(propertyResolver.getProperty("min-evictable-idle-time-millis"))); try { datasource.setFilters(propertyResolver.getProperty("filters")); } catch (SQLException e) { e.printStackTrace(); } return datasource; } /** * @Description : mybatis-plus分页插件 * --------------------------------- * @Author : Liang.Guangqing * @Date : Create in 2017/9/19 13:59 */ @Bean public PaginationInterceptor paginationInterceptor() { PaginationInterceptor page = new PaginationInterceptor(); page.setDialectType("mysql"); return page; } /** * 这里全部使用mybatis-autoconfigure 已经自动加载的资源。不手动指定 * 配置文件和mybatis-boot的配置文件同步 * @return */ @Bean public MybatisSqlSessionFactoryBean mybatisSqlSessionFactoryBean() { MybatisSqlSessionFactoryBean mybatisPlus = new MybatisSqlSessionFactoryBean(); mybatisPlus.setDataSource(dataSource); mybatisPlus.setVfs(SpringBootVFS.class); if (StringUtils.hasText(this.properties.getConfigLocation())) { mybatisPlus.setConfigLocation(this.resourceLoader.getResource(this.properties.getConfigLocation())); } mybatisPlus.setConfiguration(properties.getConfiguration()); if (!ObjectUtils.isEmpty(this.interceptors)) { mybatisPlus.setPlugins(this.interceptors); } // MP 全局配置，更多内容进入类看注释 GlobalConfiguration globalConfig = new GlobalConfiguration(); globalConfig.setDbType(DBType.MYSQL.name()); // ID 策略 AUTO->`0`("数据库ID自增") INPUT->`1`(用户输入ID") ID_WORKER->`2`("全局唯一ID") UUID->`3`("全局唯一ID") globalConfig.setIdType(2); mybatisPlus.setGlobalConfig(globalConfig); MybatisConfiguration mc = new MybatisConfiguration(); mc.setDefaultScriptingLanguage(MybatisXMLLanguageDriver.class); mybatisPlus.setConfiguration(mc); if (this.databaseIdProvider != null) { mybatisPlus.setDatabaseIdProvider(this.databaseIdProvider); } if (StringUtils.hasLength(this.properties.getTypeAliasesPackage())) { mybatisPlus.setTypeAliasesPackage(this.properties.getTypeAliasesPackage()); } if (StringUtils.hasLength(this.properties.getTypeHandlersPackage())) { mybatisPlus.setTypeHandlersPackage(this.properties.getTypeHandlersPackage()); } if (!ObjectUtils.isEmpty(this.properties.resolveMapperLocations())) { mybatisPlus.setMapperLocations(this.properties.resolveMapperLocations()); } return mybatisPlus; } /** * 注册一个StatViewServlet * @return */ @Bean public ServletRegistrationBean DruidStatViewServle(){ //org.springframework.boot.context.embedded.ServletRegistrationBean提供类的进行注册. ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(),"/druid/*"); //添加初始化参数：initParams //白名单： // servletRegistrationBean.addInitParameter("allow","127.0.0.1"); //IP黑名单 (存在共同时，deny优先于allow) : 如果满足deny的话提示:Sorry, you are not permitted to view this page. // servletRegistrationBean.addInitParameter("deny","192.168.1.73"); //登录查看信息的账号密码. servletRegistrationBean.addInitParameter("loginUsername","root"); servletRegistrationBean.addInitParameter("loginPassword","root"); //是否能够重置数据. servletRegistrationBean.addInitParameter("resetEnable","false"); return servletRegistrationBean; } /** * 注册一个：filterRegistrationBean * * @return */ @Bean public FilterRegistrationBean druidStatFilter(){ FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter()); //添加过滤规则. filterRegistrationBean.addUrlPatterns("/*"); //添加不需要忽略的格式信息. filterRegistrationBean.addInitParameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*"); return filterRegistrationBean; } }

/** * Copyright (c) 2011-2016, hubin (jobob@qq.com). * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. */ package com.tdx.account_service.generator; import java.io.File; import java.util.ArrayList; import java.util.Collections; import java.util.HashMap; import java.util.List; import java.util.Map; import com.baomidou.mybatisplus.enums.FieldFill; import com.baomidou.mybatisplus.generator.AutoGenerator; import com.baomidou.mybatisplus.generator.InjectionConfig; import com.baomidou.mybatisplus.generator.config.DataSourceConfig; import com.baomidou.mybatisplus.generator.config.FileOutConfig; import com.baomidou.mybatisplus.generator.config.GlobalConfig; import com.baomidou.mybatisplus.generator.config.PackageConfig; import com.baomidou.mybatisplus.generator.config.StrategyConfig; import com.baomidou.mybatisplus.generator.config.TemplateConfig; import com.baomidou.mybatisplus.generator.config.converts.MySqlTypeConvert; import com.baomidou.mybatisplus.generator.config.po.TableFill; import com.baomidou.mybatisplus.generator.config.po.TableInfo; import com.baomidou.mybatisplus.generator.config.rules.DbColumnType; import com.baomidou.mybatisplus.generator.config.rules.DbType; import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy; /** *code is far away from bug with the animal protecting * ┏┓　　　┏┓ *┏┛┻━━━┛┻┓ *┃　　　　　　　┃ 　 *┃　　　━　　　┃ *┃　┳┛　┗┳　┃ *┃　　　　　　　┃ *┃　　　┻　　　┃ *┃　　　　　　　┃ *┗━┓　　　┏━┛ *　　┃　　　┃神兽保佑 *　　┃　　　┃代码无BUG！ *　　┃　　　┗━━━┓ *　　┃　　　　　　　┣┓ *　　┃　　　　　　　┏┛ *　　┗┓┓┏━┳┓┏┛ *　　　┃┫┫　┃┫┫ *　　　┗┻┛　┗┻┛ *　　 * @Description : MybatisPlus代码生成器 * --------------------------------- * @Author : Liang.Guangqing * @Date : Create in 2017/9/19 14:48　 */ public class MysqlGenerator { private static String packageName="account_service"; //文件路径 private static String authorName="Liang.Guangqing"; //作者 private static String table="sc_user"; //table名字 private static String prefix="sc_"; //table前缀 private static File file = new File(packageName); private static String path = file.getAbsolutePath(); public static void main(String[] args) { // 自定义需要填充的字段 List<TableFill> tableFillList = new ArrayList<>(); tableFillList.add(new TableFill("ASDD_SS", FieldFill.INSERT_UPDATE)); // 代码生成器 AutoGenerator mpg = new AutoGenerator().setGlobalConfig( // 全局配置 new GlobalConfig() .setOutputDir(path+"/src/main/java")//输出目录 .setFileOverride(true)// 是否覆盖文件 .setActiveRecord(true)// 开启 activeRecord 模式 .setEnableCache(false)// XML 二级缓存 .setBaseResultMap(true)// XML ResultMap .setBaseColumnList(true)// XML columList .setOpen(false)//生成后打开文件夹 .setAuthor(authorName) // 自定义文件命名，注意 %s 会自动填充表实体属性！ .setMapperName("%sMapper") .setXmlName("%sMapper") .setServiceName("%sService") .setServiceImplName("%sServiceImpl") .setControllerName("%sController") ).setDataSource( // 数据源配置 new DataSourceConfig() .setDbType(DbType.MYSQL)// 数据库类型 .setTypeConvert(new MySqlTypeConvert() { // 自定义数据库表字段类型转换【可选】 @Override public DbColumnType processTypeConvert(String fieldType) { System.out.println("转换类型：" + fieldType); // if ( fieldType.toLowerCase().contains( "tinyint" ) ) { // return DbColumnType.BOOLEAN; // } return super.processTypeConvert(fieldType); } }) .setDriverName("com.mysql.jdbc.Driver") .setUsername("root") .setPassword("root") .setUrl("jdbc:mysql://127.0.0.1:3306/tdx_shop?characterEncoding=utf8") ).setStrategy( // 策略配置 new StrategyConfig() // .setCapitalMode(true)// 全局大写命名 //.setDbColumnUnderline(true)//全局下划线命名 .setTablePrefix(new String[]{prefix})// 此处可以修改为您的表前缀 .setNaming(NamingStrategy.underline_to_camel)// 表名生成策略 .setInclude(new String[] { table }) // 需要生成的表 .setRestControllerStyle(true) //.setExclude(new String[]{"test"}) // 排除生成的表 // 自定义实体父类 // .setSuperEntityClass("com.baomidou.demo.TestEntity") // 自定义实体，公共字段 //.setSuperEntityColumns(new String[]{"test_id"}) .setTableFillList(tableFillList) // 自定义 mapper 父类 // .setSuperMapperClass("com.baomidou.demo.TestMapper") // 自定义 service 父类 // .setSuperServiceClass("com.baomidou.demo.TestService") // 自定义 service 实现类父类 // .setSuperServiceImplClass("com.baomidou.demo.TestServiceImpl") // 自定义 controller 父类 .setSuperControllerClass("com.tdx."+packageName+".controller.AbstractController") // 【实体】是否生成字段常量（默认 false） // public static final String ID = "test_id"; // .setEntityColumnConstant(true) // 【实体】是否为构建者模型（默认 false） // public User setName(String name) {this.name = name; return this;} // .setEntityBuilderModel(true) // 【实体】是否为lombok模型（默认 false）<a href="https://projectlombok.org/" rel="external nofollow" >document</a> // .setEntityLombokModel(true) // Boolean类型字段是否移除is前缀处理 // .setEntityBooleanColumnRemoveIsPrefix(true) // .setRestControllerStyle(true) // .setControllerMappingHyphenStyle(true) ).setPackageInfo( // 包配置 new PackageConfig() //.setModuleName("User") .setParent("com.tdx."+packageName)// 自定义包路径 .setController("controller")// 这里是控制器包名，默认 web .setEntity("entity") .setMapper("dao") .setService("service") .setServiceImpl("service.impl") //.setXml("mapper") ).setCfg( // 注入自定义配置，可以在 VM 中使用 cfg.abc 设置的值 new InjectionConfig() { @Override public void initMap() { Map<String, Object> map = new HashMap<>(); map.put("abc", this.getConfig().getGlobalConfig().getAuthor() + "-mp"); this.setMap(map); } }.setFileOutConfigList(Collections.<FileOutConfig>singletonList(new FileOutConfig("/templates/mapper.xml.vm") { // 自定义输出文件目录 @Override public String outputFile(TableInfo tableInfo) { return path+"/src/main/resources/mapper/" + tableInfo.getEntityName() + "Mapper.xml"; } })) ).setTemplate( // 关闭默认 xml 生成，调整生成至根目录 new TemplateConfig().setXml(null) // 自定义模板配置，模板可以参考源码 /mybatis-plus/src/main/resources/template 使用 copy // 至您项目 src/main/resources/template 目录下，模板名称也可自定义如下配置： // .setController("..."); // .setEntity("..."); // .setMapper("..."); // .setXml("..."); // .setService("..."); // .setServiceImpl("..."); ); // 执行生成 mpg.execute(); // 打印注入设置，这里演示模板里面怎么获取注入内容【可无】 System.err.println(mpg.getCfg().getMap().get("abc")); } }

package ${package.Controller}; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; #if(${restControllerStyle}) import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RestController; #else import org.springframework.stereotype.Controller; #end #if(${superControllerClassPackage}) import ${superControllerClassPackage}; #end import org.springframework.beans.factory.annotation.Autowired; import com.baomidou.mybatisplus.mapper.EntityWrapper; import com.baomidou.mybatisplus.plugins.Page; import ${package.Service}.${table.serviceName}; import ${package.Entity}.common.DatatablesJSON; import ${package.Entity}.common.JSONResult; import ${package.Entity}.${entity}; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** *code is far away from bug with the animal protecting * ┏┓　　　┏┓ *┏┛┻━━━┛┻┓ *┃　　　　　　　┃ 　 *┃　　　━　　　┃ *┃　┳┛　┗┳　┃ *┃　　　　　　　┃ *┃　　　┻　　　┃ *┃　　　　　　　┃ *┗━┓　　　┏━┛ *　　┃　　　┃神兽保佑 *　　┃　　　┃代码无BUG！ *　　┃　　　┗━━━┓ *　　┃　　　　　　　┣┓ *　　┃　　　　　　　┏┛ *　　┗┓┓┏━┳┓┏┛ *　　　┃┫┫　┃┫┫ *　　　┗┻┛　┗┻┛ *　　 * @description : ${entity} 控制器 * --------------------------------- * @author ${author} * @since ${date} */ #if(${restControllerStyle}) @RestController #else @Controller #end @RequestMapping("#if(${package.ModuleName})/${package.ModuleName}#end/#if(${controllerMappingHyphenStyle})${controllerMappingHyphen}#else${table.entityPath}#end") #if(${superControllerClass}) public class ${table.controllerName} extends ${superControllerClass} { #else public class ${table.controllerName} { #end private final Logger logger = LoggerFactory.getLogger(${table.controllerName}.class); @Autowired public ${table.serviceName} ${table.entityPath}Service; /** * @description : 获取分页列表 * --------------------------------- * @author : ${author} * @since : Create in ${date} */ @RequestMapping(value = "/get${entity}List",method = RequestMethod.POST) public Object get${entity}List(${entity} param , @RequestParam(value = "draw",defaultValue = "0") Integer draw, @RequestParam(value = "length") Integer length, @RequestParam(value = "start") Integer start) { DatatablesJSON<${entity}> resJson=new DatatablesJSON<>(); try { Integer pageNo=getPageNo(start,length); Page<${entity}> page=new Page<${entity}>(pageNo,length); ${table.entityPath}Service.selectPage(page,new EntityWrapper<${entity}>(param)); resJson.setDraw(draw++); resJson.setRecordsTotal(page.getTotal()); resJson.setRecordsFiltered(page.getTotal()); resJson.setData(page.getRecords()); resJson.setSuccess(true); }catch (Exception e){ resJson.setSuccess(false); resJson.setError("异常信息:{"+e.getClass().getName()+"}"); logger.info("异常信息:{}"+e.getMessage()); } return resJson; } /** * @description : 通过id获取${entity} * --------------------------------- * @author : ${author} * @since : Create in ${date} */ @RequestMapping(value = "/get${entity}ById",method = RequestMethod.GET) public Object get${entity}ById(String id) { JSONResult<${entity}> resJson = new JSONResult<>(); try { ${entity} param= ${table.entityPath}Service.selectById(id); resJson.setData(param); resJson.setSuccess(true); }catch (Exception e) { resJson.setSuccess(false); resJson.setMessage("异常信息:{"+e.getClass().getName()+"}"); logger.info("异常信息:{}"+e.getMessage()); } return resJson; } /** * @description : 通过id删除${entity} * --------------------------------- * @author : ${author} * @since : Create in ${date} */ @RequestMapping(value = "/delete${entity}ById",method = RequestMethod.GET) public Object delete${entity}ById(String id) { JSONResult<${entity}> resJson = new JSONResult<>(); try{ resJson.setSuccess(${table.entityPath}Service.deleteById(id)); }catch (Exception e) { resJson.setSuccess(false); resJson.setMessage("异常信息:{"+e.getClass().getName()+"}"); logger.info("异常信息:{}"+e.getMessage()); } return resJson; } /** * @description : 通过id更新${entity} * --------------------------------- * @author : ${author} * @since : Create in ${date} */ @RequestMapping(value = "/update${entity}ById",method = RequestMethod.POST) public Object update${entity}ById(${entity} param) { JSONResult<${entity}> resJson = new JSONResult<>(); try{ resJson.setSuccess(${table.entityPath}Service.updateById(param)); }catch (Exception e) { resJson.setSuccess(false); resJson.setMessage("异常信息:{"+e.getClass().getName()+"}"); logger.info("异常信息:{}"+e.getMessage()); } return resJson; } /** * @description : 添加${entity} * --------------------------------- * @author : ${author} * @since : Create in ${date} */ @RequestMapping(value = "/add${entity}",method = RequestMethod.POST) public Object add${entity}(${entity} param) { JSONResult<${entity}> resJson = new JSONResult<>(); try{ resJson.setSuccess(${table.entityPath}Service.insert(param)); }catch (Exception e) { resJson.setSuccess(false); resJson.setMessage("异常信息:{"+e.getClass().getName()+"}"); logger.info("异常信息:{}"+e.getMessage()); } return resJson; } }

/** * 分页 PAGE */ @GetMapping("/test") public Page<User> test() { return userService.selectPage(new Page<User>(0, 12)); } /** * AR 部分测试 */ @GetMapping("/test1") public Page<User> test1() { User user = new User(); System.err.println("删除所有：" + user.delete(null)); //user.setId(2017091801L); user.setAccout("test"+num++); user.setType("test"); user.setCreateTime(new Date()); user.setPhone("13111110000"); user.setPassword("123456"); user.setNickname("guangqing"+2*num++); user.insert(); System.err.println("查询插入结果：" + user.selectById().toString()); //user.setNickname("mybatis-plus-ar"); System.err.println("更新：" + user.updateById()); return user.selectPage(new Page<User>(0, 12), null); } /** * 增删改查 CRUD */ @GetMapping("/test2") public User test2() { User user = new User(); user.setId(123456L); user.setAccout("test"); user.setType("test"); user.setCreateTime(new Date()); user.setPhone("13111110000"); user.setPassword("123456"); user.setNickname("guangqing"); System.err.println("删除一条数据：" + userService.deleteById(1L)); System.err.println("插入一条数据：" + userService.insert(user)); User user2 = new User(); user.setId(223456L); user.setAccout("test2"); user.setType("test"); user.setCreateTime(new Date()); user.setPhone("13111110000"); user.setPassword("123456"); user.setNickname("guangqing"); boolean result = userService.insert(user); // 自动回写的ID Long id = user.getId(); System.err.println("插入一条数据：" + result + ", 插入信息：" + user.toString()); System.err.println("查询：" + userService.selectById(id).toString()); Page<User> userListPage = userService.selectPage(new Page<User>(1, 5), new EntityWrapper<>(new User())); System.err.println("total=" + userListPage.getTotal() + ", current list size=" + userListPage.getRecords().size()); return userService.selectById(1L); } @GetMapping("testSelect") public Object testSelect() { Integer start = 0; Integer length =10; User param = new User(); //param.setNickname("guangqing2"); Integer pageNo=getPageNo(start,length); Page<User> page =new Page<User>(pageNo,length); EntityWrapper<User> ew = new EntityWrapper<User>(); ew.setEntity(param); ew.where("password={0}","123456") .like("nickname","guangqing") .ge("create_time","2017-09-21 15:50:00"); userService.selectPage(page, ew); DatatablesJSON<User> resJson= new DatatablesJSON<>(); //resJson.setDraw(draw++); resJson.setRecordsTotal(page.getTotal()); resJson.setRecordsFiltered(page.getTotal()); resJson.setData(page.getRecords()); return resJson; } @GetMapping("/selectsql") public Object getUserBySql() { JSONObject result = new JSONObject(); result.put("records", userService.selectListBySQL()); return result; } /** * 7、分页 size 一页显示数量 current 当前页码 * 方式一：http://localhost:8080/user/page?size=1&current=1 * 方式二：http://localhost:8080/user/pagehelper?size=1&current=1 */ // 参数模式分页 @GetMapping("/page") public Object page(Page page) { return userService.selectPage(page); } // ThreadLocal 模式分页 @GetMapping("/pagehelper") public Object pagehelper(Page page) { PageHelper.setPagination(page); page.setRecords(userService.selectList(null)); page.setTotal(PageHelper.freeTotal());//获取总数并释放资源也可以 PageHelper.getTotal() return page; } /** * 测试事物 * http://localhost:8080/user/test_transactional * 访问如下并未发现插入数据说明事物可靠！！ * http://localhost:8080/user/test * * 启动 Application 加上 @EnableTransactionManagement 注解其实可无默认貌似就开启了 * 需要事物的方法加上 @Transactional 必须的哦！！ */ @Transactional @GetMapping("/test_transactional") public void testTransactional() { //userService.insert(new User(1000L, "测试事物", 16, 3)); System.out.println(" 这里手动抛出异常，自动回滚数据"); throw new RuntimeException(); }

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