SpringDataJPA原生sql查询方式的封装操作

<dependency>
    <groupId>commons-beanutils</groupId>
    <artifactId>commons-beanutils</artifactId>
    <version>1.9.3</version>
</dependency>

import org.apache.commons.beanutils.BeanUtils;
import java.util.Map;

public class Map2Bean {
    private Map2Bean() {
    }
    
    public static <T> T convert(Map<String, Object> map, Class<T> clazz) {
        if (map == null || clazz == null) {
            return null;
        }
        T result = null;
        try {
            result = clazz.newInstance();
            BeanUtils.populate(result, map);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }
}

import java.io.Serializable;
import java.util.List;

public class Page<T> implements Serializable {
    private static final long serialVersionUID = -5395997221963176643L;
    private List<T> list;           // list result of this page
    private int pageNumber;             // page number
    private int pageSize = 10;            // result amount of this page
    private int totalPage;          // total page
    private int totalRow;           // total row
    public Page(int pageNumber) {
        this.pageNumber = pageNumber;
    }
    
    public Page(List<T> list, int pageNumber, int pageSize, int totalPage, int totalRow) {
        this.list = list;
        this.pageNumber = pageNumber;
        this.pageSize = pageSize;
        this.totalPage = totalPage;
        this.totalRow = totalRow;
    }
    public Page(int pageNumber, int pageSize) {
        this.pageNumber = pageNumber;
        this.pageSize = pageSize;
    }
    
    public List<T> getList() {
        return list;
    }
    
    public int getPageNumber() {
        return pageNumber;
    }
    
    public int getPageSize() {
        return pageSize;
    }
    
    public int getTotalPage() {
        totalPage = totalRow / pageSize;
        if (totalRow % pageSize > 0) {
            totalPage++;
        }
        return totalPage;
    }
    
    public int getTotalRow() {
        return totalRow;
    }
    public boolean isFirstPage() {
        return pageNumber == 1;
    }
    public boolean isLastPage() {
        return pageNumber == totalPage;
    }
    public void setList(List<T> list) {
        this.list = list;
    }
    public void setPageNumber(int pageNumber) {
        this.pageNumber = pageNumber;
    }
    public void setPageSize(int pageSize) {
        this.pageSize = pageSize;
    }
    public void setTotalPage(int totalPage) {
        this.totalPage = totalPage;
    }
    public void setTotalRow(int totalRow) {
        this.totalRow = totalRow;
    }
    @Override
    public String toString() {
        return "Page{" +
                "list=" + list +
                ", pageNumber=" + pageNumber +
                ", pageSize=" + pageSize +
                ", totalPage=" + totalPage +
                ", totalRow=" + totalRow +
                '}';
    }
}

import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

public class Record implements Serializable {
    private static final long serialVersionUID = 905784513600884082L;
    private Map<String, Object> columns = new HashMap<>();
    public Record() {
    }
    public Record(Map<String, Object> columns) {
        this.columns = columns;
    }
    public Map<String, Object> getColumns() {
        return columns;
    }
    public Record setColumns(Map<String, Object> columns) {
        this.getColumns().putAll(columns);
        return this;
    }
    public Record setColumns(Record record) {
        getColumns().putAll(record.getColumns());
        return this;
    }
    public Record remove(String column) {
        getColumns().remove(column);
        return this;
    }
    public Record remove(String... columns) {
        if (columns != null) {
            for (String c : columns) {
                this.getColumns().remove(c);
            }
        }
        return this;
    }
    public Record removeNullValueColumns() {
        for (java.util.Iterator<Map.Entry<String, Object>> it = getColumns().entrySet().iterator(); it.hasNext(); ) {
            Map.Entry<String, Object> e = it.next();
            if (e.getValue() == null) {
                it.remove();
            }
        }
        return this;
    }
    
    public Record keep(String... columns) {
        if (columns != null && columns.length > 0) {
            Map<String, Object> newColumns = new HashMap<String, Object>(columns.length);    // getConfig().containerFactory.getColumnsMap();
            for (String c : columns) {
                if (this.getColumns().containsKey(c)) {    // prevent put null value to the newColumns
                    newColumns.put(c, this.getColumns().get(c));
                }
            }
            this.getColumns().clear();
            this.getColumns().putAll(newColumns);
        } else {
            this.getColumns().clear();
        }
        return this;
    }
    
    public Record keep(String column) {
        if (getColumns().containsKey(column)) {    // prevent put null value to the newColumns
            Object keepIt = getColumns().get(column);
            getColumns().clear();
            getColumns().put(column, keepIt);
        } else {
            getColumns().clear();
        }
        return this;
    }
    public Record clear() {
        getColumns().clear();
        return this;
    }
    public Record set(String column, Object value) {
        getColumns().put(column, value);
        return this;
    }
    public <T> T get(String column) {
        return (T) getColumns().get(column);
    }
    public <T> T get(String column, Object defaultValue) {
        Object result = getColumns().get(column);
        return (T) (result != null ? result : defaultValue);
    }
    
    public String getStr(String column) {
        return (String) getColumns().get(column);
    }
    
    public Integer getInt(String column) {
        return (Integer) getColumns().get(column);
    }
    
    public Long getLong(String column) {
        return (Long) getColumns().get(column);
    }
    
    public java.math.BigInteger getBigInteger(String column) {
        return (java.math.BigInteger) getColumns().get(column);
    }
    
    public java.util.Date getDate(String column) {
        return (java.util.Date) getColumns().get(column);
    }
    
    public java.sql.Time getTime(String column) {
        return (java.sql.Time) getColumns().get(column);
    }
    
    public java.sql.Timestamp getTimestamp(String column) {
        return (java.sql.Timestamp) getColumns().get(column);
    }
    
    public Double getDouble(String column) {
        return (Double) getColumns().get(column);
    }
    
    public Float getFloat(String column) {
        return (Float) getColumns().get(column);
    }
    
    public Boolean getBoolean(String column) {
        return (Boolean) getColumns().get(column);
    }
    
    public java.math.BigDecimal getBigDecimal(String column) {
        return (java.math.BigDecimal) getColumns().get(column);
    }
    
    public byte[] getBytes(String column) {
        return (byte[]) getColumns().get(column);
    }
    
    public Number getNumber(String column) {
        return (Number) getColumns().get(column);
    }
    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append(super.toString()).append(" {");
        boolean first = true;
        for (Map.Entry<String, Object> e : getColumns().entrySet()) {
            if (first) {
                first = false;
            } else {
                sb.append(", ");
            }
            Object value = e.getValue();
            if (value != null) {
                value = value.toString();
            }
            sb.append(e.geTKEy()).append(":").append(value);
        }
        sb.append("}");
        return sb.toString();
    }
    @Override
    public boolean equals(Object o) {
        if (!(o instanceof Record)) {
            return false;
        }
        if (o == this) {
            return true;
        }
        return this.getColumns().equals(((Record) o).getColumns());
    }
    @Override
    public int hashCode() {
        return getColumns() == null ? 0 : getColumns().hashCode();
    }
    
    public String[] getColumnNames() {
        Set<String> attrNameSet = getColumns().keySet();
        return attrNameSet.toArray(new String[attrNameSet.size()]);
    }
    
    public Object[] getColumnValues() {
        java.util.Collection<Object> attrValueCollection = getColumns().values();
        return attrValueCollection.toArray(new Object[attrValueCollection.size()]);
    }
    
    public String toJSON() {
        throw new UnsupportedOperationException("还未实现");
    }
}

import org.hibernate.Session;
import org.hibernate.transfORM.Transformers;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.regex.Pattern;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;

@Component
public class SqlUtils {
    @Autowired
    @PersistenceContext
    private EntityManager entityManager;
    public SqlUtils(EntityManager entityManager) {
        this.entityManager = entityManager;
    }
    public SqlUtils() {
    }
    public void setEntityManager(EntityManager entityManager) {
        this.entityManager = entityManager;
    }
    
    public Record findFirst(String sql, Object... params) {
        return findFirst(sql, Record.class, params);
    }
    public Record findFirst(String sql, Map<String, Object> searchMap) {
        return findFirst(sql, Record.class, searchMap);
    }
    
    public <T> T findFirst(String sql, Class<T> clazz, Object... params) {
        List<T> ts = find(sql, clazz, params);
        return (ts == null || ts.size() == 0) ? null : ts.get(0);
    }
    public <T> T findFirst(String sql, Class<T> clazz, Map<String, Object> searchMap) {
        List<T> ts = find(sql, clazz, searchMap);
        return (ts == null || ts.size() == 0) ? null : ts.get(0);
    }
    public List<Record> find(String sql, Object... params) {
        return find(sql, Record.class, params);
    }
    public List<Record> find(String sql, Map<String, Object> searchMap) {
        return find(sql, Record.class, searchMap);
    }
    public List<Record> find(String sql) {
        return find(sql, Record.class, (Map<String, Object>) null);
    }
    
    public <T> List<T> find(String sql, Class<T> clazz, Object... params) {
        Session session = entityManager.unwrap(Session.class);
        org.hibernate.Query query = session.createSQLQuery(sql);
        //0-Based
        for (int i = 0; i < params.length; i++) {
            query.setParameter(i, params[i]);
        }
        List list = getList(query, clazz);
        return list;
    }
    
    public <T> List<T> find(String sql, Class<T> clazz, Map<String, Object> searchMap) {
        Session session = entityManager.unwrap(Session.class);
        org.hibernate.Query query = session.createSQLQuery(sql);
        if (null != searchMap) {
            searchMap.forEach(query::setParameter);
        }
        List list = getList(query, clazz);
        return list;
    }
    
    public Page<Record> paginate(String nativeSQL, int pageNumber, int pageSize, Object... params) {
        String nativeCountSQL = getCountSQL(nativeSQL);
        return paginate(null, nativeSQL, nativeCountSQL, Record.class, pageNumber, pageSize, params);
    }
    public Page<Record> paginate(String nativeSQL, Boolean isGroupBySql, int pageNumber, int pageSize, Object... params) {
        String nativeCountSQL = getCountSQL(nativeSQL);
        return paginate(isGroupBySql, nativeSQL, nativeCountSQL, Record.class, pageNumber, pageSize, params);
    }
    public Page<Record> paginate(String nativeSQL, String nativeCountSQL, int pageNumber, int pageSize, Object... params) {
        return paginate(null, nativeSQL, nativeCountSQL, Record.class, pageNumber, pageSize, params);
    }
    public Page<Record> paginate(Boolean isGroupBySql, String nativeSQL, String nativeCountSQL, int pageNumber, int pageSize, Object... params) {
        return paginate(isGroupBySql, nativeSQL, nativeCountSQL, Record.class, pageNumber, pageSize, params);
    }
    
    public Page<Record> paginate(String nativeSQL, int pageNumber, int pageSize, Map<String, Object> searchMap) {
        String nativeCountSQL = getCountSQL(nativeSQL);
        return paginate(null, nativeSQL, nativeCountSQL, Record.class, pageNumber, pageSize, searchMap);
    }
    public Page<Record> paginate(String nativeSQL, Boolean isGroupBySql, int pageNumber, int pageSize, Map<String, Object> searchMap) {
        String nativeCountSQL = getCountSQL(nativeSQL);
        return paginate(isGroupBySql, nativeSQL, nativeCountSQL, Record.class, pageNumber, pageSize, searchMap);
    }
    public Page<Record> paginate(String nativeSQL, String nativeCountSQL, int pageNumber, int pageSize, Map<String, Object> searchMap) {
        return paginate(null, nativeSQL, nativeCountSQL, Record.class, pageNumber, pageSize, searchMap);
    }
    public Page<Record> paginate(Boolean isGroupBySql, String nativeSQL, String nativeCountSQL, int pageNumber, int pageSize, Map<String, Object> searchMap) {
        return paginate(isGroupBySql, nativeSQL, nativeCountSQL, Record.class, pageNumber, pageSize, searchMap);
    }
    
    public <T> Page<T> paginate(Boolean isGroupBySql, String nativeSQL, Class<T> clazz, int pageNumber, int pageSize, Object... params) {
        String nativeCountSQL = getCountSQL(nativeSQL);
        return paginate(isGroupBySql, nativeSQL, nativeCountSQL, clazz, pageNumber, pageSize, params);
    }
    public <T> Page<T> paginate(String nativeSQL, String nativeCountSQL, Class<T> clazz, int pageNumber, int pageSize, Object... params) {
        return paginate(null, nativeSQL, nativeCountSQL, clazz, pageNumber, pageSize, params);
    }
    public <T> Page<T> paginate(String nativeSQL, Class<T> clazz, int pageNumber, int pageSize, String... params) {
        String nativeCountSQL = getCountSQL(nativeSQL);
        return paginate(null, nativeSQL, nativeCountSQL, clazz, pageNumber, pageSize, params);
    }
    
    public <T> Page<T> paginate(String nativeSQL, Class<T> clazz, int pageNumber, int pageSize, Map<String, Object> searchMap) {
        String nativeCountSQL = getCountSQL(nativeSQL);
        return paginate(null, nativeSQL, nativeCountSQL, clazz, pageNumber, pageSize, searchMap);
    }
    public <T> Page<T> paginate(Boolean isGroupBySql, String nativeSQL, Class<T> clazz, int pageNumber, int pageSize, Map<String, Object> searchMap) {
        String nativeCountSQL = getCountSQL(nativeSQL);
        return paginate(isGroupBySql, nativeSQL, nativeCountSQL, clazz, pageNumber, pageSize, searchMap);
    }
    public <T> Page<T> paginate(String nativeSQL, String nativeCountSQL, Class<T> clazz, int pageNumber, int pageSize, Map<String, Object> searchMap) {
        return paginate(null, nativeSQL, nativeCountSQL, clazz, pageNumber, pageSize, searchMap);
    }
    
    public <T> Page<T> paginate(Boolean isGroupBySql, String nativeSQL, String nativeCountSQL, Class<T> clazz, int pageNumber, int pageSize, Object... params) {
        if (pageNumber < 1 || pageSize < 1) {
            throw new IllegalArgumentException("pageNumber and pageSize must more than 0");
        }
        Query countQuery = entityManager.createNativeQuery(nativeCountSQL);
        //坑死人，1-Based
        for (int i = 1; i <= params.length; i++) {
            countQuery.setParameter(i, params[i - 1]);
        }
        List countQueryResultList = countQuery.getResultList();
        int size = countQueryResultList.size();
        if (isGroupBySql == null) {
            isGroupBySql = size > 1;
        }
        long totalRow;
        if (isGroupBySql) {
            totalRow = size;
        } else {
            totalRow = (size > 0) ? ((Number) countQueryResultList.get(0)).longValue() : 0;
        }
        if (totalRow == 0) {
            return new Page<>(new ArrayList<>(0), pageNumber, pageSize, 0, 0);
        }
        int totalPage = (int) (totalRow / pageSize);
        if (totalRow % pageSize != 0) {
            totalPage++;
        }
        if (pageNumber > totalPage) {
            return new Page<>(new ArrayList<>(0), pageNumber, pageSize, totalPage, (int) totalRow);
        }
        Session session = entityManager.unwrap(Session.class);
        int offset = pageSize * (pageNumber - 1);
        org.hibernate.Query query = session.createSQLQuery(nativeSQL).setFirstResult(offset).setMaxResults(pageSize);
        //坑死人，0-Based
        for (int i = 0; i < params.length; i++) {
            query.setParameter(i, params[i]);
        }
        final List list = getList(query, clazz);
        return new Page<T>(list, pageNumber, pageSize, totalPage, (int) totalRow);
    }
    
    public <T> Page<T> paginate(Boolean isGroupBySql, String nativeSQL, String nativeCountSQL, Class<T> clazz, int pageNumber, int pageSize, Map<String, Object> searchMap) {
        if (pageNumber < 1 || pageSize < 1) {
            throw new IllegalArgumentException("pageNumber and pageSize must more than 0");
        }
        Query countQuery = entityManager.createNativeQuery(nativeCountSQL);
        if (null != searchMap) {
            searchMap.forEach(countQuery::setParameter);
        }
        List countQueryResultList = countQuery.getResultList();
        int size = countQueryResultList.size();
        if (isGroupBySql == null) {
            isGroupBySql = size > 1;
        }
        long totalRow;
        if (isGroupBySql) {
            totalRow = size;
        } else {
            totalRow = (size > 0) ? ((Number) countQueryResultList.get(0)).longValue() : 0;
        }
        if (totalRow == 0) {
            return new Page<>(new ArrayList<>(0), pageNumber, pageSize, 0, 0);
        }
        int totalPage = (int) (totalRow / pageSize);
        if (totalRow % pageSize != 0) {
            totalPage++;
        }
        if (pageNumber > totalPage) {
            return new Page<>(new ArrayList<>(0), pageNumber, pageSize, totalPage, (int) totalRow);
        }
        Session session = entityManager.unwrap(Session.class);
        int offset = pageSize * (pageNumber - 1);
        org.hibernate.Query query = session.createSQLQuery(nativeSQL).setFirstResult(offset).setMaxResults(pageSize);
        if (null != searchMap) {
            searchMap.forEach(query::setParameter);
        }
        final List list = getList(query, clazz);
        return new Page<T>(list, pageNumber, pageSize, totalPage, (int) totalRow);
    }
    private <T> List getList(org.hibernate.Query query, Class<T> clazz) {
        final List list;
        //Object[].class
        if (Object[].class == clazz) {
            return query.list();
        }
        query.setResultTransformer(Transformers.ALIAS_TO_ENTITY_MAP);
        List mapList = query.list();
        list = new ArrayList(mapList.size());
        mapList.forEach(map -> {
            Map<String, Object> tmp = (Map<String, Object>) map;
            //Record.class
            if (Record.class == clazz) {
                list.add(new Record(tmp));
                //Map及子类
            } else if (Map.class.isAssignableFrom(clazz)) {
                list.add(tmp);
                //JavaBean风格
            } else {
                list.add(Map2Bean.convert(tmp, clazz));
            }
        });
        return list;
    }
    
    private String getCountSQL(String sql) {
        String countSQL = "SELECT COUNT(*) AS totalRow " + sql.substring(sql.toUpperCase().indexOf("FROM"));
        return replaceOrderBy(countSQL);
    }
    protected static class Holder {
        private static final Pattern ORDER_BY_PATTERN = Pattern.compile(
                "order\\s+by\\s+[^,\\s]+(\\s+asc|\\s+desc)?(\\s*,\\s*[^,\\s]+(\\s+asc|\\s+desc)?)*",
                Pattern.CASE_INSENSITIVE | Pattern.MULTILINE);
    }
    public String replaceOrderBy(String sql) {
        return Holder.ORDER_BY_PATTERN.matcher(sql).replaceAll("");
    }
}

@Autowired
SqlUtils mSqlUtils;
。。。
@Transactional
@apiOperation("测试")
@PostMapping("/get1")
public Result get1() {
    HashMap<String, Object> map = new HashMap<>();
    map.put("id", "SPA0000001");
    TestResp record = mSqlUtils.findFirst("select * from st_PkgActvty where id = :id", TestResp.class, map);
    return ResultGenerator.genSuccessResult(record);
}

@Query(value = "select bill.id_ as id, bill.created_date as date, bill.no, lawyer_case .case_no as caseNo, " +
            "lawyer_case .case_name as caseName, customer.no as customerNo, customer.cn_name as customerName, " +
            "bill.total_expense_after_tax, bill.collected_money, bill.book_ticket_amount, bill.version " +
            "e1.name as creator, bill.status" +
            "from bill " +
            "left join lawyer_case on lawyer_case .case_no=bill.case_no " +
            "left join customer on customer.no=bill.customer_no " +
            "left join employee e1 on e1.id_=bill.creator " +
            "where IF (?1!='', customer_no=?1, 1=1) " +
            "and   IF (?2!='', case_no=?2, 1=1) " +
            "and   IF (?3!='', status=?3, 1=1) " +
            "and   IF (?4!='', creator'%',?4,'%')), 1=1) " +
            "and   create_by=?5 " +
            "ORDER BY ?#{#pageable} ",
            countQuery = "select count(*) " +
                    "from bill " +
                    "left join lawyer_case on lawyer_case .case_no=bill.case_no " +
                    "left join customer on customer.no=bill.customer_no " +
                    "left join employee e1 on e1.id_=bill.creator " +
                    "where IF (?1!='', customer_no=?1, 1=1) " +
                    "and   IF (?2!='', case_no=?2, 1=1) " +
                    "and   IF (?3!='', status=?3, 1=1) " +
                    "and   IF (?4!='', creator'%',?4,'%')), 1=1) " +
                    "and   create_by=?5 "+
                    "ORDER BY ?#{#pageable} ",
            nativeQuery = true)
    Page<Object[]> findAllBill(String customerNo, String caseNo, Integer status, String creator,
                               String createBy, Pageable pageable);

private Page<T> convertForPage(List<T> pageInfos, Pageable pageable, Integer totalPage) {
        return new PageImpl<>(pageInfos, pageable, totalPage);
    }