我有以下 JSTL 代码，
<sql:setDataSource dataSource="jdbc/xxx"/>
<sql:query var="ab" scope="application" maxRows="100">
select Distinct DATE(timestamp) as DATE from tableA ORDER BY DATE DESC LIMIT 100;
</sql:query>
<c:forEach var="row" items="${ab.rows}">
<h1><c:out value="${row.DATE}"/></h1>
<sql:query var="abc" scope="application" maxRows="100">
Select title from tableA Where DATE(timestamp) = "<c:out value="${row.DATE}"/>";
</sql:query>
<c:forEach var="row" items="${abc.rows}">
<c:out value="${row.title}"/><br><br>
</c:forEach>
</c:forEach>
如何实现与 java 类相同的要求。这是我的要求，此 JSTL 代码满足基于日期显示数据
这是我正在尝试的类代码，
HashMap<ArrayList<Date>, ArrayList<String>> TitleList = new HashMap<ArrayList<Date>,ArrayList<String>>();
ArrayList<Date> DateList = new ArrayList<Date>();
ArrayList<String> Title = new ArrayList<String>();
ArrayList<Date> DateListinner = new ArrayList<Date>();
List<Map<String, Object>> rows = new ArrayList<Map<String, Object>>();
String sqld = "Select Distinct DATE(timestamp) as DATE from TABLE A ORDER BY DATE DESC LIMIT 100";
ResultSet rsd = null;
try {
rsd = stmt1.executeQuery(sqld);
} catch (SQLException ex) {
Logger.getLogger(sortxx.class.getName()).log(Level.SEVERE, null, ex);
}
try {
while (rsd.next()) {
System.out.println("Testing");
Date Date = rsd.getDate("Date");
System.out.println(Date);
DateList.add(Date);
String sql = "Select title,DATE(timestamp) as DATE from TABLEA Where DATE(timestamp) = '" + Date + "'";
// System.out.println(sql);
ResultSet rs = stmt.executeQuery(sql);
ResultSetMetaData metaData = rs.getMetaData();
int columnCount = metaData.getColumnCount();
System.out.println(columnCount);
while (rs.next()) {
String title = rs.getString("title");
Title.add(title);
// System.out.println("Testing inside");
System.out.println(rs.getString("title"));
DateListinner.add(rs.getDate("DATE"));
Map<String, Object> columns = new LinkedHashMap<String, Object>();
for (int i = 1; i <= columnCount; i++) {
columns.put(metaData.getColumnLabel(i), rs.getObject(i));
}
rows.add(columns);
TitleList.put(DateList,Title);
}
}