在queryForList中使用自定義類（）

Question

我試圖在JDBCTemplate.queryForList方法中使用自定義類作爲元素類型，但是沒有返回任何數據或任何錯誤。

自定義類代碼：

public class DocumentCategory { 
     private int categoryId; 
     private String description; 
     private int divnId; 
     private int depttId; 
     private String revCategory; 
     private boolean withBids; 
     private boolean withFinalDocuments; 
     private boolean editable; 
     private int templateId; 
     private String templateName; 
     private boolean changed; 
     private String remarks; 
     private boolean withBidsChanged; 
     private boolean withFinalDocumentsChanged; 
     private int sortOrder; 

     private String vdrNumber; 

     public int getCategoryId() { 
      return categoryId; 
     } 
     public void setCategoryId(int categoryId) { 
      this.categoryId = categoryId; 
     } 
     public String getDescription() { 
      return description; 
     } 
     public void setDescription(String description) { 
      this.description = description; 
     } 
     public int getDivnId() { 
      return divnId; 
     } 
     public void setDivnId(int divnId) { 
      this.divnId = divnId; 
     } 
     public int getDepttId() { 
      return depttId; 
     } 
     public void setDepttId(int depttId) { 
      this.depttId = depttId; 
     } 
     public String getRevCategory() { 
      return revCategory; 
     } 
     public void setRevCategory(String revCategory) { 
      this.revCategory = revCategory; 
     } 
     public boolean isEditable() { 
      return editable; 
     } 
     public void setEditable(boolean editable) { 
      this.editable = editable; 
     } 
     public int getTemplateId() { 
      return templateId; 
     } 
     public void setTemplateId(int templateId) { 
      this.templateId = templateId; 
     } 
     public String getTemplateName() { 
      return templateName; 
     } 
     public void setTemplateName(String templateName) { 
      this.templateName = templateName; 
     } 
     public boolean isChanged() { 
      return changed; 
     } 
     public void setChanged(boolean changed) { 
      this.changed = changed; 
     } 
     public String getRemarks() { 
      return remarks; 
     } 
     public void setRemarks(String remarks) { 
      this.remarks = remarks; 
     } 
     public boolean getWithFinalDocuments() { 
      return withFinalDocuments; 
     } 
     public void setWithFinalDocuments(boolean withFinalDocuments) { 
      this.withFinalDocuments = withFinalDocuments; 
     } 
     public boolean getWithBids() { 
      return withBids; 
     } 
     public void setWithBids(boolean withBids) { 
      this.withBids = withBids; 
     } 
     public boolean isWithBidsChanged() { 
      return withBidsChanged; 
     } 
     public void setWithBidsChanged(boolean withBidsChanged) { 
      this.withBidsChanged = withBidsChanged; 
     } 
     public boolean isWithFinalDocumentsChanged() { 
      return withFinalDocumentsChanged; 
     } 
     public void setWithFnalDocumentsChanged(boolean withFinalDocumentsChanged) { 
      this.withFinalDocumentsChanged = withFinalDocumentsChanged; 
     } 
     public String getVdrNumber() { 
      return vdrNumber; 
     } 
     public void setVdrNumber(String vdrNumber) { 
      this.vdrNumber = vdrNumber; 
     } 
     public int getSortOrder() { 
      return sortOrder; 
     } 
     public void setSortOrder(int sortOrder) { 
      this.sortOrder = sortOrder; 
     } 

} 

和查詢代碼：

sql = "SELECT -serialno as categoryId, describe as description,16 as divnId, 51 as depttId , NVL2(prnmatter, 'For Review', 'For Record') as revCategory, NVL2(prnquote, 1, 0) as withBids, NVL2(asbuild, 1, 0) as withFinalDocuments, VDRNO as vdrNumber, 0 as editable,100000 as templateId,'Instrumentation' as templateName, 0 as changed, '' as remarks, 0 as withBidsChanged, 0 as withFinalDocumentsChanged, serialno as sortOrder from Instreq.VDRData_to_DCTMVIEW WHERE REQNO=? AND PROJECTNO=? and predate= (SELECT * FROM(SELECT PREDATE FROM Instreq.VDRData_to_DCTMVIEW WHERE REQNO=? AND PROJECTNO=? ORDER BY PREDATE DESC) WHERE ROWNUM=1)"; 
final List<DocumentCategory> dc = jdbcTemplate.queryForList(sql, DocumentCategory.class, orderNumber, mrNumber, orderNumber, mrNumber); 

Answer 1

使用query method taking a RowMapper as argument，並且變換的結果集到一個DocumentCategory感謝的RowMapper返回的每一行。

queryForList()在查詢返回單個列時返回List<Integer>或List<String>是很有用的。

Answer 2

你可以得到你的類的對象的列表：

jdbcTemplate.query(sql, new BeanPropertyRowMapper<DocumentCategory>(DocumentCategory.class));