Spring boot对于我来说是一个刚接触的新东西,学习过程中,发现这东西还是很容易上手的,Spring boot没配置时会默认使用Spring data jpa,这东西可以说一个极简洁的工具,可是我还是比较喜欢用mybatis,工具是没有最好的,只有这合适自己的。
说到mybatis,最近有一个很好用的工具--------mybatis-Plus(官网),现在更新的版本是2.1.2,这里使用的也是这个版本。我比较喜欢的功能是代码生成器,条件构造器,这样就可以更容易的去开发了。
mybatisPlus官网上是有Spring boot整个的例子的,我也跟着它走了一篇,结果,程序没跑起来,后来才知道demo用的H2 database,和mysql根本不是同一样东西,所以各位想要整合mybatisPlus,可以不看官网的,可以少走弯路。
下面就是整合的过程
1、首先要把需要的jar文件都弄过来,pom.xml需要的东西如下
pom.xml(不完整)
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<!-- mybatis-plus begin -->
< 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 >
<!-- mybatis-plus end -->
<!-- druid阿里巴巴数据库连接池 -->
< dependency >
< groupId >com.alibaba</ groupId >
< artifactId >druid</ artifactId >
< version >1.1.3</ version >
</ dependency >
<!--mysql-->
< 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 >
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2、添加mybatis相关的配置,如账号、密码等。这里我使用了application.yml来配。
application.yml
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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
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配置的东西和我们以前用mybatis配置可以说差不多,但spring boot是没有xml配置文件的。注意一下红字的内容,基本没问题了。
3、mybatis-Plus配置文件------MybatisPlusConfig,首先上图说明一下文件路径。其中MybatisPlusConfig是放在config文件夹内,而xml文件是放在resouces下mapper中。
接着就是MybatisPlusConfig内容部分了
MybatisProperties.java
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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;
}
}
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这里是完整的配置文件,需要注意的是引入的包,别引错了!
4、还要开启dao的扫描,很简单,就是在启动文件中添加@MapperScan("com.tdx.account_service.dao*"),如下是完整的
到这里,配置算是完成了,运行一下项目是可以运行起来的。
我觉得Mybatis-Plus最好玩得应该是代码生成器这部分内容,下面是代码生成器的使用过程
pom.xml上要加点东西
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< dependency >
< groupId >org.apache.velocity</ groupId >
< artifactId >velocity-engine-core</ artifactId >
< version >2.0</ version >
</ dependency >
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1、代码生成器的配置文件
MybatisPlusConfig.java
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/**
* Copyright (c) 2011-2016, hubin (jobob@qq.com).
* <p>
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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" ));
}
}
|
文件中修改的内容还是很多的,最主要的还是mysql的连接信息,没理由你账号,密码都错了还能连得上吧,其次设置一下你生成的模板文件路径,我这里生成的路径在上面图可以看得到,是在com.tdx.account_service下的,注意,xml文件要放在resources下,不然是识别的,说找不到这个方法
按照官网的代码模板生成的文件基本是白白的,主要是mybatis-Plus集成了公共方法,很多常用的工具都可以引用了。在这里我提供一下我修改后Controller.java.vm文件,主要还是按照我自己的习惯去弄的
controller.java.vm
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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;
}
}
|
除了这个文件,其他代码模板我都是按照官网那样的,这里引用3个外部的文件,有AbstractController.java(控制器基类)、DatatablesJSON.java和JSONResult.java,然后这些文件又引用了其他文件,我懵逼了,怎么文件这么多啊,看来如果全部都贴上来得多占地方啊,所以我选择相信码云,如果需要请在码云上按照少的文件下载,码云地址。需要注意的是,我的模板是直接代替了mybatis-plus.jar中的templates目录。
最后就到了测试过程
下面的代码段都是放在Controller文件里面,然后启动程序,对应端口,请求方法。测试的话是需要按照自己的实体类操作的,所以仅供参考。
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/**
* 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¤t=1<br>
* 方式二:http://localhost:8080/user/pagehelper?size=1¤t=1<br>
*/
// 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<br>
* 访问如下并未发现插入数据说明事物可靠!!<br>
* http://localhost:8080/user/test<br>
* <br>
* 启动 Application 加上 @EnableTransactionManagement 注解其实可无默认貌似就开启了<br>
* 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();
}
|
这么多的测试,我觉得最有趣的是条件构造器,在官网上有更齐全的,而我这里是按照我自己的需求写的。
最后谢谢大家的观看,写博客经验不足,写得不好请见谅,如果能给你带来帮助请点个赞,若遇到不明白的,或者我有写错的地方请提出,谢谢!也希望大家多多支持服务器之家。
原文链接:https://www.cnblogs.com/lianggp/p/7573653.html