如何将Java POJO转换为JSON字符串？

Question

我有一个POJO为我设定值,pojo是:

public class CreateRequisitionRO extends AbstractPortfolioSpecificRO {

    private static final long serialVersionUID = 2418929142185068821L;

    private BigDecimal transSrlNo;
    private String transCode;
    private InflowOutflow inflowOutflow;

public BigDecimal getTransSrlNo() {
        return transSrlNo;
    }

    public void setTransSrlNo(BigDecimal transSrlNo) {
        this.transSrlNo = transSrlNo;
    }

    public InflowOutflow getInflowOutflow() {
        return inflowOutflow;
    }

    public void setInflowOutflow(InflowOutflow inflowOutflow) {
        this.inflowOutflow = inflowOutflow;
    }
    public String getTransCode() {
        return transCode;
    }
}

这是我设置值的方式:

CreateRequisitionRO[] request = new CreateRequisitionRO[1];
    request[0].setTransSrlNo(new BigDecimal(1));
    request[0].setTransCode("BUY");
    request[0].setInflowOutflow(InflowOutflow.I);

now i would like to convert/serialize the above java pojo to Json string.

有些人可以帮我怎么做？

最好的祝福

Answer 1

如其他答案中所述,XStream或GSON将对您进行排序.按照XStream上的JSON教程,您的代码将如下所示:

        CreateRequisitionRO product = new CreateRequisitionRO();
        XStream xstream = new XStream(new JettisonMappedXmlDriver());
        xstream.setMode(XStream.NO_REFERENCES);
        xstream.alias("product", Product.class);

        System.out.println(xstream.toXML(product));     

使用GSON,您的代码将如下所示:

CreateRequisitionRO obj = new CreateRequisitionRO();
Gson gson = new Gson();
String json = gson.toJson(obj); 

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