springboot mybaits-plus Sql 注入器 自定義邏輯刪除

1 寫一個類繼續 AbstractLogicMethod

public class LogicDeleteByWrapper extends AbstractLogicMethod {     @Override    public MappedStatement injectMappedStatement(Class<?> mapperClass, Class<?> modelClass, TableInfo tableInfo) {        String sql;        MySqlMethod sqlMethod = MySqlMethod.LOGIC_DELETE_BY_WRAPPER;        sql = String.format(sqlMethod.getSql(), tableInfo.getTableName(), sqlLogicSet(),                sqlWhereEntityWrapper(tableInfo));        SqlSource sqlSource = languageDriver.createSqlSource(configuration, sql, modelClass);        return addUpdateMappedStatement(mapperClass, modelClass, sqlMethod.getMethod(), sqlSource);    }     public String sqlLogicSet(){         String sql ="<trim prefix=\"SET\" suffixOverrides=\",\">\n" +                "<if test=\"et.updateBy != null\">update_by=#{et.updateBy},</if>\n" +                "<if test=\"et.updateTime != null\">update_time=#{et.updateTime},</if>\n" +                "is_deleted = 1\n" +                "</trim> ";        return sql;    }}複製代碼

寫一個類繼承baseMapper

/**     * 邏輯刪除     * @param entity     * @param updateWrapper     * @return     */    int logicDeleteByWrapper(@Param(Constants.ENTITY) T entity, @Param(Constants.WRAPPER) Wrapper<T> updateWrapper);複製代碼

寫一個枚舉類

public enum  MySqlMethod {      /**     * 根據參數邏輯刪除     */    LOGIC_DELETE_BY_WRAPPER("logicDeleteByWrapper", "根據ID 修改數據", "<script>\nUPDATE %s %s %s\n</script>"),     /**     * 根據id邏輯刪除     */    LOGIC_DELETE_BY_ID("logicDeleteById", "根據ID 修改數據", "<script>\nUPDATE %s %s WHERE %s=#{%s}\n</script>");     private final String method;    private final String desc;    private final String sql;     MySqlMethod(String method, String desc, String sql) {        this.method = method;        this.desc = desc;        this.sql = sql;    }     public String getMethod() {        return method;    }     public String getDesc() {        return desc;    }     public String getSql() {        return sql;    }}複製代碼

最後一步就是注入到bean

public class MyLogicSqlInjector extends AbstractSqlInjector {      @Override    public List<AbstractMethod> getMethodList() {        return Stream.of(                         new LogicDeleteByWrapper()        ).collect(Collectors.toList());    }      @Override    public void injectSqlRunner(Configuration configuration) {        new SqlRunnerInjector().inject(configuration);    }}複製代碼

@Configuration@MapperScan("com.xxx.xxx.*.dao")public class MybatisPlusConfig {     @Bean    public PaginationInterceptor paginationInterceptor() {        return new PaginationInterceptor();    }      @Bean    public ISqlInjector sqlInjector() {        return new MyLogicSqlInjector();    }     /**     * SQL執行效率插件     */    @Bean    @Profile({"dev","test"})// 設置 dev test 環境開啓    public PerformanceInterceptor performanceInterceptor() {        return new PerformanceInterceptor();    }}複製代碼

轉載 www.51csdn.cn/article/140…