SpringBoot攻略十一艺栈、自定義ISqlInjector撵溃，添加通用方法updateAllColumnById

參考【SpringBoot攻略七渊鞋、集成mybatisplus實戰(zhàn)】，做如下修改：

1瞧挤、自定義sql注入器GeneralMybatisPlusSqlInjector

package com.javasgj.springboot.mybatisplus.config;

import java.util.List;

import com.baomidou.mybatisplus.core.injector.AbstractMethod;
import com.baomidou.mybatisplus.core.injector.DefaultSqlInjector;

/**
 * 自定義sql注入器锡宋，增加通用方法
 */
public class GeneralMybatisPlusSqlInjector extends DefaultSqlInjector {

    @Override
    public List<AbstractMethod> getMethodList() {
        
        List<AbstractMethod> methodList = super.getMethodList();
        
        // 根據(jù)id更新所有數(shù)據(jù)
        methodList.add(new UpdateAllColumnById());
        return methodList;
    }
}

2、方法對應(yīng)的實現(xiàn)類UpdateAllColumnById

package com.javasgj.springboot.mybatisplus.config;

import static java.util.stream.Collectors.joining;

import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.SqlSource;

import com.baomidou.mybatisplus.annotation.FieldFill;
import com.baomidou.mybatisplus.core.injector.AbstractMethod;
import com.baomidou.mybatisplus.core.metadata.TableFieldInfo;
import com.baomidou.mybatisplus.core.metadata.TableInfo;
import com.baomidou.mybatisplus.core.toolkit.Constants;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.core.toolkit.sql.SqlScriptUtils;

/**
 * 根據(jù)id更新所有數(shù)據(jù)
 */
public class UpdateAllColumnById extends AbstractMethod {

    @Override
    public MappedStatement injectMappedStatement(Class<?> mapperClass, Class<?> modelClass, TableInfo tableInfo) {
        
        GeneralMybatisPlusSqlMethod sqlMethod = GeneralMybatisPlusSqlMethod.UPDATE_ALL_COLUMN_BY_ID;
        String sql = String.format(sqlMethod.getSql(), tableInfo.getTableName(),
            sqlSet(false, false, tableInfo, Constants.ENTITY_SPOT),
            tableInfo.getKeyColumn(), Constants.ENTITY_SPOT + tableInfo.getKeyProperty(),
            new StringBuilder("<if test=\"et instanceof java.util.Map\">")
                .append("<if test=\"et.MP_OPTLOCK_VERSION_ORIGINAL!=null\">")
                .append(" AND ${et.MP_OPTLOCK_VERSION_COLUMN}=#{et.MP_OPTLOCK_VERSION_ORIGINAL}")
                .append("</if></if>"));
        
        SqlSource sqlSource = languageDriver.createSqlSource(configuration, sql, modelClass);
        return addUpdateMappedStatement(mapperClass, modelClass, sqlMethod.getMethod(), sqlSource);
    }

    @Override
    protected String sqlSet(boolean logic, boolean ew, TableInfo table, String prefix) {
        
        String newPrefix = prefix == null ? StringPool.EMPTY : prefix;
        String sqlScript = table.getFieldList().stream()
            .filter(i -> {
                return true;
            })
            .map(i -> {
                return this.getSqlSet(i, newPrefix);
            }).collect(joining(StringPool.NEWLINE));
            
        if (ew) {
            sqlScript += StringPool.NEWLINE;
            sqlScript += SqlScriptUtils.convertIf(SqlScriptUtils.unSafeParam(Constants.U_WRAPPER_SQL_SET),
                String.format("%s != null and %s != null", Constants.WRAPPER, Constants.U_WRAPPER_SQL_SET), false);
        }
        sqlScript = SqlScriptUtils.convertTrim(sqlScript, "SET", null, null, ",");
        return sqlScript;
    }
    
    public String getSqlSet(TableFieldInfo i, String prefix) {
        
        String newPrefix = prefix == null ? StringPool.EMPTY : prefix;
        String column = i.getColumn();
        String update = i.getUpdate();
        FieldFill fieldFill = i.getFieldFill();
        String el = i.getEl();
        
        // 默認(rèn): column=
        String sqlSet = column + StringPool.EQUALS;
        if (StringUtils.isNotEmpty(update)) {
            sqlSet += String.format(update, column);
        } else {
            sqlSet += SqlScriptUtils.safeParam(newPrefix + el);
        }
        sqlSet += StringPool.COMMA;
        if (fieldFill == FieldFill.UPDATE || fieldFill == FieldFill.INSERT_UPDATE) {
            // 不進(jìn)行 if 包裹
            return sqlSet;
        }
        return sqlSet;
    }
}

參考其他基本方法的實現(xiàn)類源碼如：UpdateById等等

3特恬、MybatisPlus自定義SQL方法枚舉類GeneralMybatisPlusSqlMethod

package com.javasgj.springboot.mybatisplus.config;

/**
 * MybatisPlus自定義SQL方法
 */
public enum GeneralMybatisPlusSqlMethod {
    
    /**
     * 修改
     */
    UPDATE_ALL_COLUMN_BY_ID("updateAllColumnById", "根據(jù)ID更新所有數(shù)據(jù)", "<script>\nUPDATE %s %s WHERE %s=#{%s} %s\n</script>");

    private final String method;
    private final String desc;
    private final String sql;

    GeneralMybatisPlusSqlMethod(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;
    }
}

4执俩、MybatisPlus配置類，加載自定義sql注入器

package com.javasgj.springboot.mybatisplus.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import com.baomidou.mybatisplus.core.injector.ISqlInjector;
import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;

/**
 * MybatisPlus配置類
 */
@Configuration
public class MybatisPlusConfig {

    /**
     * 分頁插件
     * 或者在mybatis-config.xml配置：
     *  <plugins>  
     *      <!-- mybatisplus分頁攔截器 -->
     *      <plugin interceptor="com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor">
     *      </plugin>  
     *  </plugins> 
     */
    @Bean
    public PaginationInterceptor paginationInterceptor() {
        
        return new PaginationInterceptor();
    }

    /**
     * 自定義sql注入器
     * 或者application.properties配置：
     * mybatis-plus.globalConfig.sqlInjector=com.javasgj.springboot.mybatisplus.config.GeneralMybatisPlusSqlInjector
     */
    @Bean
    public ISqlInjector iSqlInjector() {
        
        return new GeneralMybatisPlusSqlInjector();
    }

    /**
     * sql性能分析插件鸵鸥，輸出sql語句及所需時間
     */
    /*@Bean
    @Profile({"dev","test"})// 設(shè)置 dev test 環(huán)境開啟
    public PerformanceInterceptor performanceInterceptor() {
        return new PerformanceInterceptor();
    }*/
    
    /**
     * 樂觀鎖插件
     */
    /*@Bean
    public OptimisticLockerInterceptor optimisticLockerInterceptor(){
        return new OptimisticLockerInterceptor();
    }*/
}

5奠滑、自定義基礎(chǔ)Mapper繼承BaseMapper

package com.javasgj.springboot.mybatisplus.dao;

import org.apache.ibatis.annotations.Param;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.baomidou.mybatisplus.core.toolkit.Constants;

public interface GeneralBaseMapper<T> extends BaseMapper<T> {

    /**
     * 根據(jù)id更新所有數(shù)據(jù)
     * @param entity
     * @return
     */
    int updateAllColumnById(@Param(Constants.ENTITY) T entity);
}

6、自定義基礎(chǔ)service繼承IService及實現(xiàn)類

package com.javasgj.springboot.mybatisplus.service;

import java.util.Collection;

import com.baomidou.mybatisplus.extension.service.IService;

public interface GeneralService<T> extends IService<T> {

    /**
     * 根據(jù)ID更新所有數(shù)據(jù)
     * @param entity
     * @return
     */
    boolean updateAllColumnById(T entity);
    
    /**
     * 根據(jù)ID批量更新所有數(shù)據(jù)
     * @param entityList
     * @return
     */
    default boolean updateAllColumnBatchById(Collection<T> entityList) {
        return updateAllColumnBatchById(entityList, 30);
    }
    
    /**
     * 根據(jù)ID批量更新所有數(shù)據(jù)
     * @param entityList
     * @param batchSize
     * @return
     */
    boolean updateAllColumnBatchById(Collection<T> entityList, int batchSize);
}

實現(xiàn)類

package com.javasgj.springboot.mybatisplus.service;

import java.util.Collection;

import org.apache.ibatis.binding.MapperMethod;
import org.apache.ibatis.session.SqlSession;
import org.springframework.transaction.annotation.Transactional;

import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
import com.baomidou.mybatisplus.core.toolkit.Constants;
import com.baomidou.mybatisplus.core.toolkit.sql.SqlHelper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.javasgj.springboot.mybatisplus.config.GeneralMybatisPlusSqlMethod;
import com.javasgj.springboot.mybatisplus.dao.GeneralBaseMapper;

public class GeneralServiceImpl<M extends GeneralBaseMapper<T>, T> extends ServiceImpl<GeneralBaseMapper<T>, T> implements GeneralService<T> {

    /**
     * 獲取SqlStatement
     *
     * @param sqlMethod
     * @return
     */
    protected String sqlStatement(GeneralMybatisPlusSqlMethod generalMybatisPlusSqlMethod) {
        return SqlHelper.table(currentModelClass()).getSqlStatement(generalMybatisPlusSqlMethod.getMethod());
    }
    
    @Transactional(rollbackFor = Exception.class)
    @Override
    public boolean updateAllColumnById(T entity) {
        return retBool(baseMapper.updateAllColumnById(entity));
    }

    @Transactional(rollbackFor = Exception.class)
    @Override
    public boolean updateAllColumnBatchById(Collection<T> entityList, int batchSize) {
        if (CollectionUtils.isEmpty(entityList)) {
            throw new IllegalArgumentException("Error: entityList must not be empty");
        }
        int i = 0;
        String sqlStatement = sqlStatement(GeneralMybatisPlusSqlMethod.UPDATE_ALL_COLUMN_BY_ID);
        try (SqlSession batchSqlSession = sqlSessionBatch()) {
            for (T anEntityList : entityList) {
                MapperMethod.ParamMap<T> param = new MapperMethod.ParamMap<>();
                param.put(Constants.ENTITY, anEntityList);
                batchSqlSession.update(sqlStatement, param);
                if (i >= 1 && i % batchSize == 0) {
                    batchSqlSession.flushStatements();
                }
                i++;
            }
            batchSqlSession.flushStatements();
        }
        return true;
    }
}

然后所有的mapper和servcie繼承我們自定義擴(kuò)展的基礎(chǔ)mapper和service
好了妒穴，大家開始測試測試吧宋税，參考【原 SpringBoot秘籍七、集成mybatisplus實戰(zhàn)】

SpringBoot攻略十一仔蝌、自定義ISqlInjector泛领，添加通用方法updateAllColumnById

SpringBoot攻略十一、自定義ISqlInjector敛惊，添加通用方法updateAllColumnById