Question

我创建了onse序列化程序类，它应该将Bigdecimal限制为十进制后的两位数。但它也删除了零。例如：如果值为95.50，则截断零并在json中输出为95.5。

public class PriceJsonSerializer extends JsonSerializer {

    @Override
    public void serialize(BigDecimal value, JsonGenerator jgen, 
    SerializerProvider provider) throws IOException, JsonProcessingException 
    {
      jgen.writeNumber(value.setScale(2, 
         BigDecimal.ROUND_HALF_UP).toString());
         }
    }

Answer 1

要强制序列化器保留舍入而不将值写为字符串，请尝试“ writeRawValue”。

var express = require('express');
var app = express();
var nodeExcel = require('excel-export');
var conf = {}
conf.cols = [{
        caption: 'Sl.',
        type: 'number',
        width: 3
    }];
var arr = [];
arr.push([1]);
conf.rows = arr;

var result = nodeExcel.execute(conf);

app.get('/',function(req,res){
    res.setHeader('Content-Type', 'application/vnd.openxmlformats');
    res.setHeader("Content-Disposition", "attachment; filename=" + 
    "Report.xlsx");
    res.writeHead(200);
    res.end(result, 'binary');
});
app.listen(3000,function(){
    console.log("listening port 3000");
});

在json中保持bigdecimal的尾随零

1 个答案: