Java编程的那些事儿

摘要： 前台传来查询参数为null,后台接收用：Map<String , String> map = new HashMap<String, String>(); map.put("name", name==null?"":name);Hibernate 主键：@GenericGenerator(name = "generator", strategy = "guid") @Id @GeneratedValue(generator = "generator") @Column(n 阅读全文