static final 常量的生命周期

爱被打了一巴掌 2024-04-17 19:05 29阅读 0赞

从应用初始到消耗验证过程如下  
1.新建MapUtil 类  
public class MapUtil \{

public static final Map<String, Object> redisMap = new HashMap<String, Object>();

2.分别在2个接口获取到redisMap,一个是放数据进去，另外一个是获取数据  
放  
public ReturnPublic getTableData(DocumentCommand documentCommand) \{  
ReturnPublic returnPublic = new ReturnPublic();  
PageJson pageJson = new PageJson();  
Map<String, Object> utilMMap = MapUtil.redisMap;  
utilMMap.put(“test”, “123”);  
try \{  
DocumentEntity documentEntity = new DocumentEntity();  
BeanUtils.copyProperties(documentCommand, documentEntity);  
List documentDTOS = documentMapper.getTableData(documentEntity);  
pageJson.setTotalSize(documentDTOS.size());  
pageJson.setDataList(documentDTOS);  
returnPublic.setData(pageJson);  
returnPublic.setCode(ReturnCodeConstatnt.SUCCESS\_CODE);  
returnPublic.setMsg(ReturnCodeConstatnt.SEARCH\_SUCCESS\_DESC);  
\} catch (BeansException e) \{  
logger.error("【分页查询表单失败】：" + e.getMessage());  
returnPublic.setCode(ReturnCodeConstatnt.FAIL\_CODE);  
returnPublic.setMsg(ReturnCodeConstatnt.SEARCH\_FAIL\_DESC);  
\}  
return returnPublic;  
\}  
获取：  
@Override  
public ReturnPublic get(DocumentCommand documentCommand) \{  
ReturnPublic returnPublic = new ReturnPublic();  
Map<String, Object> utilMMap = MapUtil.redisMap;  
String value = utilMMap.get(“test”).toString();  
System.out.println(value);  
try \{  
DocumentEntity documentsEntity = new DocumentEntity();  
BeanUtils.copyProperties(documentCommand, documentsEntity);  
documentMapper.getDocument(documentsEntity);  
returnPublic.setCode(ReturnCodeConstatnt.SUCCESS\_CODE);  
returnPublic.setMsg(ReturnCodeConstatnt.SEARCH\_SUCCESS\_DESC);  
\} catch (Exception e) \{  
logger.error("【查询失败】：" + e.getMessage());  
returnPublic.setCode(ReturnCodeConstatnt.FAIL\_CODE);  
returnPublic.setMsg(ReturnCodeConstatnt.SEARCH\_FAIL\_DESC);  
\}  
return returnPublic;  
\}  
获取能够得到test这个key值，并打印出123