Question

我需要将JSON格式的javascript日期对象提交给JSP，在JSP中，我正在使用Jackson包将传入的JSON字符串解析为Java GregorianCalendar对象。 Jackson包成功地将传入的JSON字符串解析为Java GregorianCalendar对象，没有任何错误消息，但是，我发现javascript日期对象和Java GregorianCalendar对象之间存在1天的差异。以下JSP页面可以说明问题，那么如何解决该问题？

这是我的java对象：

public class Shift {

    private String ito_id;
    private String shift;
    private GregorianCalendar shift_date;

    public Shift(){

    }       


    public String getItoId() {
        return ito_id;
    }

    public void setItoId(String ito_id) {
        this.ito_id = ito_id;
    }

    public String getShift() {
        return shift;
    }

    public void setShift(String shift) {
        this.shift = shift;
    }

    public GregorianCalendar getShiftDate() {
        return shift_date;
    }

    public void setShiftDate(GregorianCalendar shift_date) {
        this.shift_date = shift_date;
    }
}

这是我的前端JSP页面：

    <%@page contentType="text/html; charset=UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF8">
<title>Insert title here</title>
<script type="text/javascript" src="<%=request.getContextPath() %>/webjars/jquery/3.3.1/jquery.min.js"></script>
</head>
<body>
<div id="clientSideDateValue">
Client side date value:
</div>

<div id="serverSideDateValue">
Server side date value:
</div>

<script>
var shiftDate=new Date(2018,6,1);
$("#clientSideDateValue").html("Client side date value:"+shiftDate.getFullYear()+"/"+shiftDate.getMonth()+"/"+shiftDate.getDate());
itoRosterString="{\"itoId\":\"999-01-01\",";
itoRosterString+="\"shift\":\"b\",";
itoRosterString+="\"shiftDate\":"+JSON.stringify(shiftDate);
itoRosterString+="}";
jQuery.ajax({"url": "saveShift.jsp",
     dataType: 'text',
     data:itoRosterString,
     method:"POST",
     success:function(requestResult){
                $("#serverSideDateValue").html("Server side date value:"+requestResult);
             }, 
     error:function(jqXHR, textStatus, errorThrown)
        {
            console.log(jqXHR,textStatus);
        }
});
</script>
</body>
</html>

这是我的后端JSP页面（即saveShift.jsp）：

<%@page contentType="text/html; charset=UTF-8"%>
<%@ page import="java.io.*"%>       
<%@ page import="java.util.*"%>    
<%@ page import="com.Shift"%>
<%@ page import="com.fasterxml.jackson.databind.ObjectMapper"%> 
<%
    ObjectMapper objectMapper = new ObjectMapper();
    BufferedReader br = new BufferedReader(new InputStreamReader(request.getInputStream()));
    Shift shift=objectMapper.readValue(br.readLine(),Shift.class);
    out.println(shift.getShiftDate().get(Calendar.YEAR)+"/"+shift.getShiftDate().get(Calendar.MONTH)+"/"+shift.getShiftDate().get(Calendar.DAY_OF_MONTH));
%>

这是输出屏幕：

杰克逊JSON将JavaScript日期对象解析为Java GregorianCalendar对象问题

0 个答案: