项目用到的Json字串到Json对象转换

如下代码：

 

StringBuilder sb = new StringBuilder("[");
sb.append("{");
sb.append("cremindTitle:\"小名\",");
sb.append("cremindDate:\"2012-06-05 19:20:22\",");
sb.append("cremindRemark:\"阿斯蒂芬\"");
sb.append("}");
sb.append("]");
List<Cremind> clist = JSONArray.toList(JSONArray.fromObject(sb.toString()),
        Cremind.class);

在执行中会报错,原因是由于日期类型字串到日期类型Timestamp的转换，解决思路如下：

 

编写一个Morpher类继承自AbstractObjectMorpher

 

class TimeStampMorpher extends AbstractObjectMorpher{

    private Logger LOG = Logger.getLogger(TimeStampMorpher.class);

    private String format ="yyyy-MM-dd hh:mm:ss";
    public void setFormat(String format) {
        this.format = format;
    }

    public TimeStampMorpher() {
        // TODO Auto-generated constructor stub
    }

    public TimeStampMorpher(String format) {
        this.format = format;
    }

    @Override
    public Object morph(Object dateStr) {
        // TODO Auto-generated method stub

        try {
            java.util.Date date = new SimpleDateFormat(format).parse(dateStr.toString());
            return new Timestamp(date.getTime());
        } catch (ParseException e) {
            // TODO Auto-generated catch block
            if (LOG.isInfoEnabled())
                LOG.info("日期格式可能无效,将采用系统当前日期");
            e.printStackTrace();
        }
        return new  java.sql.Timestamp(System.currentTimeMillis());//返回默认日期
    }

    @Override
    public Class morphsTo() {
        // TODO Auto-generated method stub
        return Timestamp.class;
    }
}

最终处理版本：

 

 

package com.defshare.foundation.global;

import java.sql.Timestamp;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.List;

import org.apache.log4j.Logger;

import net.sf.ezmorph.object.AbstractObjectMorpher;
import net.sf.json.JSONArray;
import net.sf.json.util.JSONUtils;

class TimeStampMorpher extends AbstractObjectMorpher{

    private Logger LOG = Logger.getLogger(TimeStampMorpher.class);

    private String format ="yyyy-MM-dd hh:mm:ss";
    public void setFormat(String format) {
        this.format = format;
    }

    public TimeStampMorpher() {
        // TODO Auto-generated constructor stub
    }

    public TimeStampMorpher(String format) {
        this.format = format;
    }

    @Override
    public Object morph(Object dateStr) {
        // TODO Auto-generated method stub

        try {
            java.util.Date date = new SimpleDateFormat(format).parse(dateStr.toString());
            return new Timestamp(date.getTime());
        } catch (ParseException e) {
            // TODO Auto-generated catch block
            if (LOG.isInfoEnabled())
                LOG.info("日期格式可能无效,将采用系统当前日期");
            e.printStackTrace();
        }
        return new  java.sql.Timestamp(System.currentTimeMillis());//返回默认日期
    }

    @Override
    public Class morphsTo() {
        // TODO Auto-generated method stub
        return Timestamp.class;
    }
}

public final class JsonUtil {

    /**
     * json数组字串到json数组对象<br/>
     * <pre>
     *  StringBuilder sb = new StringBuilder("[");
     *  sb.append("{");
     *  sb.append("cremindTitle:\"xiaoqiang\",");
     *  sb.append("cremindDate:\"2012-06-0519:20:22\",");
     *  sb.append("cremindRemark:\"xiaoqiangremark\"");
     *  sb.append("}");
     *  sb.append("]");
     * </pre>
     * @param jsonArray
     * @param classzz
     */
    public static final <T>  List<T>  jsonArrayToList(String jsonArray,Class classzz){
        JSONUtils.getMorpherRegistry().registerMorpher(new TimeStampMorpher());
//      JSONUtils.getMorpherRegistry().registerMorpher(new TimeStampMorpher());
//      StringBuilder sb = new StringBuilder("[");
//      sb.append("{");
//      sb.append("cremindTitle:\"小名\",");
//      sb.append("cremindDate:\"2012-06-0519:20:22\",");
//      sb.append("cremindRemark:\"阿斯蒂芬\"");
//      sb.append("}");
//      sb.append("]");
//      List<Cremind> clist = JSONArray.toList(JSONArray.fromObject(sb.toString()),
//              Cremind.class);

        return JSONArray.toList(JSONArray.fromObject(jsonArray),classzz);
    }

}

项目中表示层Action调用：

 

 

/**
     * 新增客户
     * 请求参数:
     * name:客户名称
     *  cno:客户编号(跟ID不同)
     *  customKindId:客户性质ID
     *  phone:公司电话
     *  fax:公司传真
     *  address:客户地址
     *  siteUrl:公司网址
     *  cIndustryId:客户行业ID
     *  cIndustryNum:行业排名
     *  mainSellProduct:主营产品
     *  cbuildDate:成立时间
     *  clevelId:客户级别ID
     *  signTag:签约标志
     *  remind:[{
     *  cremindTitle:提醒名称
     *  cremindDate:提醒日期
     *  cremindRemark:备注
     *  },{},{}]
     * @return
     * @throws Exception
     */
    public String addCustomer() throws Exception{
        return super.executeAction(new IExecuteActionCallback() {

            public String execute(BaseJSONAction baseJsonAction) {
                Customer cst = new Customer();
                bindParam2Bean(cst);//绑定请求参数到对象
                //处理特殊参数的绑定
                //处理客户性质ID
                String customKindId = getParam("customKindId").toString();
                if (!StringUtils.isBlank(customKindId)){
                    CustomKind ck = new CustomKind();
                    ck.setCustomKindId(Integer.valueOf(customKindId));
                    cst.setCustomKind(ck);
                }

                //处理客户行业
                String cIndustryId = getParam("cIndustryId").toString();
                if(!StringUtils.isBlank(cIndustryId)){
                    Cindustry cs = new Cindustry();
                    cs.setCindustryId(Integer.valueOf(cIndustryId));
                    cst.setCindustry(cs);
                }
                //处理客户级别
                String clevelId = getParam("clevelId").toString();
                if(!StringUtils.isBlank(clevelId)){
                    Clevel cl = new Clevel();
                    cl.setClevelId(Integer.valueOf(clevelId));
                    cst.setClevel(cl);
                }

                //處理註冊時間
                cst.setCregArchDate(DateUtil.getTimestamp());
                if (cst.getCbuildDate()==null)
                    cst.setCbuildDate(DateUtil.getTimestamp());

                //處理所屬員工
                Emp emp = getCurrentUser();
                if (emp!=null)
                    cst.setEmp(emp);


                <span style="color: #3366ff;">//处理提醒
                String remind = getParam("remind").toString();
                //反序列化JSON字符串到对象数组
                //List<Cremind> clist = JSONArray.toList(JSONArray.fromObject(remind),Cremind.class);
                List<Cremind> clist = JsonUtil.jsonArrayToList(remind, Cremind.class);</span>
                //设置客户提醒
                cst.setCreminds(new HashSet(clist));

                cstService.addCustomer(cst);

                return SUCCESS;
            }
        });
    }

 

评论

1 楼 nj_first 2012-07-05  

何不使用jackson这个字符串转对象的工具包,很方便的