官網上寫着
但是,這個其實是2.0系列的寫法,由於引用了最新的3.0.3這個功能基本不好使.
3.0.3版本的寫法
也就是中間加了一層,原來是AutoSqlInjector,現在改為AbstractSqlInjector.
源碼如圖:
寫出自己的方法,命名為MyInjector,繼承AbstractInjector.有個必須繼承實現的方法getMethodList();如上圖,繼承后如下
然后,就是模仿寫法,這里我是模仿的LogicSqlInjector,源碼如圖,也是繼承AbstractSqlInjector,實現了getMethodList();
上圖就是Logic 的寫法,我們要關注大塊,就是返回一個Stream.of(new DeleteAll()).collect(Collectors.toList()),Stream.of()中間加了一個對象,然后打開這個對象,就可以看到對象的寫法.
結構如上圖,就是繼承了AbstractLogicMethod,打開一看這個方法是其自己自定義的一個方法,我們根本用不到(暫時),所以我們繼承其公有父類AbstractMethod
現在結構就是很清晰了,MyInjector繼承了AbstractInjector類,實現了其getMethod方法,getMethod方法返回一個Stream.of( ).collect(Collectors.toList()),Dream.of()中封裝一個對象,是實際的Sql注入方法的寫法.
這個寫法需要繼承AbstractMethod實現其injectMappedStatement方法,所以也不用記什么,濾清邏輯改寫就可以了.結構
創建DeleteAll類,繼承AbstractMethod,實現其方法,將Logic的injectMappedStatement中的內容復制下來,改寫成自己的,在Logic中的SqlMethod是個枚舉類型,所以建立一個MySqlMethod,查看Sqlmethod,對其源碼進行復制改寫.
DeleteAll代碼.

1 /** 2 * 刪除 3 * @author liuyangos8888 4 */ 5 public class DeleteAll extends AbstractMethod { 6 7 @Override 8 public MappedStatement injectMappedStatement(Class<?> mapperClass, Class<?> modelClass, TableInfo tableInfo) { 9 String sql; 10 MySqlMethod mySqlMethod = MySqlMethod.DELETE_ALL; 11 if (tableInfo.isLogicDelete()) { 12 sql = String.format(mySqlMethod.getSql(), tableInfo.getTableName(), tableInfo, 13 sqlWhereEntityWrapper(tableInfo)); 14 } else { 15 mySqlMethod = MySqlMethod.DELETE_ALL; 16 sql = String.format(mySqlMethod.getSql(), tableInfo.getTableName(), 17 sqlWhereEntityWrapper(tableInfo)); 18 } 19 SqlSource sqlSource = languageDriver.createSqlSource(configuration, sql, modelClass); 20 return addUpdateMappedStatement(mapperClass, modelClass, mySqlMethod.getMethod(), sqlSource); 21 } 22 }
LogicDelete源碼

1 /** 2 * <p> 3 * 根據 queryWrapper 刪除 4 * </p> 5 * 6 * @author hubin 7 * @since 2018-06-13 8 */ 9 public class LogicDelete extends AbstractLogicMethod { 10 11 @Override 12 public MappedStatement injectMappedStatement(Class<?> mapperClass, Class<?> modelClass, TableInfo tableInfo) { 13 String sql; 14 SqlMethod sqlMethod = SqlMethod.LOGIC_DELETE; 15 if (tableInfo.isLogicDelete()) { 16 sql = String.format(sqlMethod.getSql(), tableInfo.getTableName(), sqlLogicSet(tableInfo), 17 sqlWhereEntityWrapper(tableInfo)); 18 } else { 19 sqlMethod = SqlMethod.DELETE; 20 sql = String.format(sqlMethod.getSql(), tableInfo.getTableName(), 21 sqlWhereEntityWrapper(tableInfo)); 22 } 23 SqlSource sqlSource = languageDriver.createSqlSource(configuration, sql, modelClass); 24 return addUpdateMappedStatement(mapperClass, modelClass, sqlMethod.getMethod(), sqlSource); 25 } 26 }
MySqlMethod代碼

1 package com.baidu.www.injector; 2 3 4 /** 5 * 自定義全局刪除方法 6 */ 7 8 public enum MySqlMethod { 9 10 11 /** 12 * 刪除全部 13 */ 14 DELETE_ALL("deleteAll", "根據 entity 條件刪除記錄", "<script>\nDELETE FROM %s %s\n</script>"); 15 16 17 private final String method; 18 private final String desc; 19 private final String sql; 20 21 MySqlMethod(String method, String desc, String sql) { 22 this.method = method; 23 this.desc = desc; 24 this.sql = sql; 25 } 26 27 public String getMethod() { 28 return method; 29 } 30 31 public String getDesc() { 32 return desc; 33 } 34 35 public String getSql() { 36 return sql; 37 } 38 39 }
SqlMethod源碼

1 package com.baidu.www.injector; 2 3 4 /** 5 * 自定義全局刪除方法 6 */ 7 8 public enum MySqlMethod { 9 10 11 /** 12 * 刪除全部 13 */ 14 DELETE_ALL("deleteAll", "根據 entity 條件刪除記錄", "<script>\nDELETE FROM %s %s\n</script>"); 15 16 17 private final String method; 18 private final String desc; 19 private final String sql; 20 21 MySqlMethod(String method, String desc, String sql) { 22 this.method = method; 23 this.desc = desc; 24 this.sql = sql; 25 } 26 27 public String getMethod() { 28 return method; 29 } 30 31 public String getDesc() { 32 return desc; 33 } 34 35 public String getSql() { 36 return sql; 37 } 38 39 }
MyInjector代碼

1 package com.baidu.www.injector; 2 3 import com.baomidou.mybatisplus.core.injector.AbstractMethod; 4 import com.baomidou.mybatisplus.core.injector.AbstractSqlInjector; 5 6 import java.util.List; 7 import java.util.stream.Collectors; 8 import java.util.stream.Stream; 9 10 /** 11 * 自定義全局操作 12 * 13 * @author liuyangos8888 14 */ 15 public class MyInjector extends AbstractSqlInjector { 16 17 18 @Override 19 public List<AbstractMethod> getMethodList() { 20 return Stream.of( 21 new DeleteAll() 22 ).collect(Collectors.toList()); 23 } 24 25 }
LogicSqlInjector源碼

1 /** 2 * <p> 3 * SQL 邏輯刪除注入器 4 * </p> 5 * 6 * @author hubin 7 * @since 2018-06-12 8 */ 9 public class LogicSqlInjector extends AbstractSqlInjector { 10 11 12 @Override 13 public List<AbstractMethod> getMethodList() { 14 return Stream.of( 15 new Insert(), 16 new LogicDelete(), 17 new LogicDeleteByMap(), 18 new LogicDeleteById(), 19 new LogicDeleteBatchByIds(), 20 new LogicUpdate(), 21 new LogicUpdateById(), 22 new LogicSelectById(), 23 new LogicSelectBatchByIds(), 24 new LogicSelectByMap(), 25 new LogicSelectOne(), 26 new LogicSelectCount(), 27 new LogicSelectMaps(), 28 new LogicSelectMapsPage(), 29 new LogicSelectObjs(), 30 new LogicSelectList(), 31 new LogicSelectPage() 32 ).collect(Collectors.toList()); 33 }
最后修改其配置文件,加入到框架中,

1 <!--定義mybatisplus全局配置--> 2 <bean id="globalConfig" class="com.baomidou.mybatisplus.core.config.GlobalConfig"> 3 4 <property name="dbConfig"> 5 <bean class="com.baomidou.mybatisplus.core.config.GlobalConfig.DbConfig"> 6 <!-- 全局的主鍵策略 --> 7 <property name="idType" value="AUTO"/> 8 <!-- 全局的表前綴策略配置 --> 9 <property name="tablePrefix" value="tbl_"/> 10 11 <!--邏輯刪除全局配值--> 12 <property name="logicDeleteValue" value="0"/> 13 <property name="logicNotDeleteValue" value="1"/> 14 15 </bean> 16 </property> 17 18 <!--<!–注入自定義全局操作–>--> 19 <property name="sqlInjector" ref="mySqlInjector"/> 20 21 <!--<property name="sqlInjector" ref="logicSqlInjector"/>--> 22 23 24 </bean> 25 26 27 <!--自定義注入器--> 28 29 <bean id="mySqlInjector" class="com.baidu.www.injector.MyInjector"/>
全部

1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:context="http://www.springframework.org/schema/context" 5 xmlns:tx="http://www.springframework.org/schema/tx" 6 xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring" 7 xsi:schemaLocation="http://mybatis.org/schema/mybatis-spring 8 http://mybatis.org/schema/mybatis-spring-1.2.xsd 9 http://www.springframework.org/schema/beans 10 http://www.springframework.org/schema/beans/spring-beans.xsd 11 http://www.springframework.org/schema/context 12 http://www.springframework.org/schema/context/spring-context-4.0.xsd 13 http://www.springframework.org/schema/tx 14 http://www.springframework.org/schema/tx/spring-tx-4.0.xsd"> 15 <!-- 數據源 --> 16 <context:property-placeholder location="classpath:db.properties"/> 17 18 <bean id="dataSource" 19 class="com.mchange.v2.c3p0.ComboPooledDataSource"> 20 <property name="driverClass" value="${jdbc.driver}"/> 21 <property name="jdbcUrl" value="${jdbc.url}"/> 22 <property name="user" value="${jdbc.username}"/> 23 <property name="password" value="${jdbc.password}"/> 24 </bean> 25 26 <!-- 事務管理器 --> 27 <bean id="dataSourceTransactionManager" 28 class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> 29 <property name="dataSource" ref="dataSource"/> 30 </bean> 31 32 <!-- 基於注解的事務管理 --> 33 <tx:annotation-driven 34 transaction-manager="dataSourceTransactionManager"/> 35 36 <!--<!–修改為MybatisPlus配置–>--> 37 <bean id="sqlSessionFactoryBean" class=" com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean "> 38 39 <!-- 數據源 --> 40 <property name="dataSource" ref="dataSource"/> 41 42 <property name="configLocation" value="classpath:mybatis-config.xml"/> 43 44 <!-- 別名處理 --> 45 <property name="typeAliasesPackage" value="com.baidu.www.bean"/> 46 47 <!--注入全局MP策略配置--> 48 <property name="globalConfig" ref="globalConfig"/> 49 50 <!--插件配置--> 51 52 <property name="plugins"> 53 <list> 54 55 <!--注冊分頁插件--> 56 <bean class="com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor"/> 57 58 <!--注冊執行分析插件,生產環境不建議使用--> 59 <!--<bean class="com.baomidou.mybatisplus.extension.plugins.SqlExplainInterceptor"/>--> 60 <!--<!–<property name="properties" ref="">–>--> 61 62 <!--<!–</property>–>--> 63 <!--</bean>--> 64 65 <!-- SQL 執行性能分析,開發環境使用,線上不推薦。 maxTime 指的是 sql 最大執行時長 --> 66 <bean class="com.baomidou.mybatisplus.extension.plugins.PerformanceInterceptor"> 67 <property name="maxTime" value="100"/> 68 <!--SQL是否格式化 默認false--> 69 <property name="format" value="true"/> 70 </bean> 71 72 <!--樂觀鎖插件--> 73 <bean class="com.baomidou.mybatisplus.extension.plugins.OptimisticLockerInterceptor"/> 74 75 </list> 76 </property> 77 78 </bean> 79 80 <!--定義mybatisplus全局配置--> 81 <bean id="globalConfig" class="com.baomidou.mybatisplus.core.config.GlobalConfig"> 82 83 <property name="dbConfig"> 84 <bean class="com.baomidou.mybatisplus.core.config.GlobalConfig.DbConfig"> 85 <!-- 全局的主鍵策略 --> 86 <property name="idType" value="AUTO"/> 87 <!-- 全局的表前綴策略配置 --> 88 <property name="tablePrefix" value="tbl_"/> 89 90 <!--邏輯刪除全局配值--> 91 <property name="logicDeleteValue" value="0"/> 92 <property name="logicNotDeleteValue" value="1"/> 93 94 </bean> 95 </property> 96 97 <!--<!–注入自定義全局操作–>--> 98 <property name="sqlInjector" ref="mySqlInjector"/> 99 100 <!--<property name="sqlInjector" ref="logicSqlInjector"/>--> 101 102 103 </bean> 104 105 106 <!--自定義注入器--> 107 108 <bean id="mySqlInjector" class="com.baidu.www.injector.MyInjector"/> 109 110 111 <!--邏輯刪除--> 112 <!--<bean id="logicSqlInjector" class="com.baomidou.mybatisplus.extension.injector.LogicSqlInjector"/>--> 113 114 115 <!--配置 mybatis 掃描 mapper 接口的路徑 --> 116 <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> 117 <property name="basePackage" 118 value="com.baidu.www.mapper"> 119 120 </property> 121 </bean> 122 </beans>
添加到mapper.

1 package com.baidu.www.mapper; 2 3 import com.baidu.www.bean.Employee; 4 import com.baomidou.mybatisplus.core.mapper.BaseMapper; 5 6 /** 7 * <p> 8 * Mapper 接口 9 * </p> 10 * 11 * @author Mr.Liu 12 * @since 2018-10-04 13 */ 14 public interface EmployeeMapper extends BaseMapper<Employee> { 15 16 17 Integer deleteAll(); 18 19 20 }
測試

1 public class TestGenerator { 2 3 4 private ApplicationContext iocContext = new ClassPathXmlApplicationContext("applicationContext.xml"); 5 6 EmployeeMapper employeeMapper = iocContext.getBean("employeeMapper", EmployeeMapper.class); 7 8 private Logger logger = LoggerFactory.getLogger(TestGenerator.class); 9 10 Gson gson = new Gson(); 11 12 /** 13 * 測試分頁插件 14 * 15 * @throws SQLException 16 */ 17 @Test 18 public void testInterceptor() throws SQLException { 19 20 21 Integer result = employeeMapper.deleteAll(); 22 23 24 if (result > 0) { 25 26 logger.info("刪除成功:" + result); 27 28 } 29 30 } 31 }
找了很多資料都沒有3.0.3的答案,我就自己看源碼,看到懂了,就改了這個,希望對你有幫助,源碼如下:
https://github.com/liushaoye/mplus005