SrpingMVC通过JSON注入from数据到实体自定义(LocalDateTime,LocalDate,Boolean类型)字段的序列化、反序列化方法

2023-07-23 23:03:10

import com.fasterxml.jackson.core.JsonParser;

import com.fasterxml.jackson.core.JsonProcessingException;

import com.fasterxml.jackson.databind.DeserializationContext;

import com.fasterxml.jackson.databind.JsonDeserializer;

import org.apache.commons.lang3.StringUtils;

import org.springframework.stereotype.Component;

import java.io.IOException;

@Component

public class JsonBooleanDeserializer extends JsonDeserializer<Boolean> {

    /***

     * 兼容sql92 bit数据类型 0(false) 1(true)

     * @param parser

     * @param ctxt

     * @return

     * @throws IOException

     * @throws JsonProcessingException

     */

    @Override

    public Boolean deserialize(JsonParser parser, DeserializationContext ctxt) throws IOException, JsonProcessingException {

        String value = parser.getText();

        if(StringUtils.isBlank(value))

        {

            return null;

        }

        //here we treat 1 as true, 0 false

        if(Boolean.valueOf(StringUtils.equals("1",value)))

        {

            return Boolean.TRUE;

        }

        if(Boolean.valueOf(StringUtils.equals("on",value))) //for checkbox component

        {

            return Boolean.TRUE;

        }

        if(Boolean.valueOf(StringUtils.equals("0",value)))

        {

            return Boolean.FALSE;

        }

        if(Boolean.valueOf(StringUtils.equalsIgnoreCase("true",value)))

        {

            return Boolean.TRUE;

        }

        if(Boolean.valueOf(StringUtils.equalsIgnoreCase("false",value)))

        {

            return Boolean.FALSE;

        }

        throw new RuntimeException("unsupported conversion from ["+value+"] to Boolean.");

    }

}

实现目的：

将数据库 bit类型的0,1分别转换成Boolean类型的False和true

将短日期格式2019-01-01转换成LocalDate类的实例

将日期时间格式的数据2019-01-01 10:10:10转换成LocalDateTime的实例

前端数据

<input type="radio" name="f_scjafs" value="1">接受

<input type="radio" name="f_scjafs" checked="" value="0">取消

<input style="width:299px;" id="f_wxdkhqzrq" name="f_wxdkhqzrq" type="text" class="input" onfocus="WdatePicker({isShowToday:true,dateFmt:'yyyy-MM-dd',readOnly:true})" value="2019-05-07">

<input autocomplete="off" name="f_sqsj" id="f_sqsj" type="text" maxlength="100" onfocus="WdatePicker({isShowToday:true,dateFmt:'yyyy-MM-dd HH:mm:ss',readOnly:true})" value="2019-05-29 16:35:14" class="input1">

后端结果

前端代码

<script type="text/javascript" src="${ctx}/js/jquery.serializejson.min.js"></script>

<script>

 var data = {};

 data = $("#form1").serializeJSON();

 var issueProcess = [];

$("#sjcljl .list").each(function(index,item) {

    var step = index+1;

    var record ={};

    record.id = replaceNull($(item).find('input[id="issueProcessId'+step+'"]').val());

    record.f_clsm = replaceNull($(item).find('textarea[id="f_clsm'+step+'"]').val());

    record.f_fk = replaceNull($(item).find('select[id="f_fk'+step+'"]').val());

    record.f_clkssj = replaceNull($(item).find('input[id="f_clkssj'+step+'"]').val());

    record.f_cljssj = replaceNull($(item).find('input[id="f_cljssj'+step+'"]').val());

    record.f_clryid = replaceNull($(item).find('input[id="f_clry1'+step+'"]').attr("f_clryid1"+step));

    //至少填写开始、结束时间

    if(!(isNull(record.f_clkssj)|| isNull(record.f_cljssj) ||isNull(record.f_clryid))) {

        issueProcess.push(record);

    }

});

data.issueProcess = issueProcess;

 $.ajax({

    type: "POST",

    url: "/itss/issue/save",

    dataType: 'json',

    contentType : 'application/json;charset=utf-8',

    data: JSON.stringify(data),

    success: function (resp) {

        //处理代码

    }, error: function (err) {

        layer.alert(err.responseText, {

            offset: '200px',

        });

    }

});

function replaceNull(val){

    if(val==undefined || val==null || val=="" || val=='' || val=='null' || val=='-1' ||val.length<parseInt(1)){

        return null;

    }else{

        return val;

    }

}

</script>

后端代码

    /***

     * 问题保存

     * @param model

     * @return

     */

    @RequestMapping(value = "/save", method = RequestMethod.POST,consumes = MediaType.APPLICATION_JSON_UTF8_VALUE)

    @ResponseBody

    public ReturnParam save(@RequestBody UserIssueDto model) {

        ReturnParam rp = new ReturnParam();

        Integer id = model.getId();

        if (id>0) {

            ///....

        } else {

            ///....

        }

        return rp;

    }

    public class ReturnParam {

    private Object result;

    private String desc;

    private String status;

    private String wybs;

    public String getWybs() {

        return wybs;

    }

    public void setWybs(String wybs) {

        this.wybs = wybs;

    }

    public Object getResult() {

        return result;

    }

    public void setResult(Object result) {

        this.result = result;

    }

    public String getDesc() {

        return desc;

    }

    public void setDesc(String desc) {

        this.desc = desc;

    }

    public String getStatus() {

        return status;

    }

    public void setStatus(String status) {

        this.status = status;

    }

}

public class UserIssueDto implements Serializable

{

    @JSONField(format = "yyyy-MM-dd HH:mm:ss")

    @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")

    @JsonSerialize(using= JsonLocalDateTimeSerializer.class)

    @JsonDeserialize(using= JsonLocalDateTimeDeserializer.class)

    private LocalDateTime f_sqsj;  //申请时间

     @JsonSerialize(using= JsonBooleanSerializer.class)

    @JsonDeserialize(using= JsonBooleanDeserializer.class)

    private Boolean f_scjafs;   //审查结案方式：0拒绝 1接受

    @DateTimeFormat(pattern = "yyyy-MM-dd")

    @JsonSerialize(using= JsonLocalDateSerializer.class)

    @JsonDeserialize(using= JsonLocalDateDeserializer.class)

    private LocalDate f_wxdkhqzrq;// 维修单客户签字日期

    //...

}

import com.fasterxml.jackson.core.JsonGenerator;

import com.fasterxml.jackson.databind.JsonSerializer;

import com.fasterxml.jackson.databind.SerializerProvider;

import org.springframework.stereotype.Component;

import java.io.IOException;

@Component

public class JsonBooleanSerializer extends JsonSerializer<Boolean> {

    @Override

    public void serialize(Boolean value, JsonGenerator gen, SerializerProvider serializers) throws IOException{

        if(null == value)

        {

            gen.writeString((String)null);

        }

        gen.writeBoolean(Boolean.TRUE.equals(value));

    }

}

import com.fasterxml.jackson.core.JsonParser;

import com.fasterxml.jackson.databind.DeserializationContext;

import com.fasterxml.jackson.databind.JsonDeserializer;

import org.apache.commons.lang3.StringUtils;

import org.springframework.stereotype.Component;

import java.io.IOException;

import java.time.LocalDate;

import java.time.ZoneId;

import java.time.format.DateTimeFormatter;

/***

 * 兼容jsr310的LocalDate JSON反序列化类

 */

@Component

public class JsonLocalDateDeserializer extends JsonDeserializer<LocalDate> {

    @Override

    public LocalDate deserialize(JsonParser parser, DeserializationContext ctxt) throws IOException{

        String szLocalDate = parser.getText();

        if(StringUtils.isBlank(szLocalDate)) {

            System.err.println("invalid date supplied for conversion,ignored.");

            return null;

        }

        return LocalDate.parse(parser.getText(), DateTimeFormatter.ofPattern("yyyy-MM-dd").withZone(ZoneId.of("GMT+8")));

    }

}

import com.fasterxml.jackson.core.JsonGenerator;

import com.fasterxml.jackson.databind.JsonSerializer;

import com.fasterxml.jackson.databind.SerializerProvider;

import org.springframework.stereotype.Component;

import java.io.IOException;

import java.time.LocalDate;

import java.time.ZoneId;

import java.time.format.DateTimeFormatter;

/***

 * 兼容jsr310的LocalDate JSON序列化类

 */

@Component

public class JsonLocalDateSerializer extends JsonSerializer<LocalDate> {

    @Override

    public void serialize(LocalDate value, JsonGenerator gen, SerializerProvider serializers) throws IOException{

        if(value == null)

        {

            System.err.println("invalid date supplied for conversion,ignored.");

            return;

        }

        String formattedDate = DateTimeFormatter.ofPattern("yyyy-MM-dd").withZone(ZoneId.of("GMT+8")).format(value);

        gen.writeString(formattedDate);

    }

}

import com.fasterxml.jackson.core.JsonParser;

import com.fasterxml.jackson.databind.DeserializationContext;

import com.fasterxml.jackson.databind.JsonDeserializer;

import org.apache.commons.lang3.StringUtils;

import org.springframework.stereotype.Component;

import java.io.IOException;

import java.time.LocalDateTime;

import java.time.ZoneId;

import java.time.format.DateTimeFormatter;

/***

 * 兼容jsr310的LocalDateTime JSON反序列化类

 */

@Component

public class JsonLocalDateTimeDeserializer extends JsonDeserializer<LocalDateTime> {

    @Override

    public LocalDateTime deserialize(JsonParser parser, DeserializationContext ctxt) throws IOException{

        String szLocalDateTime = parser.getText();

        if(StringUtils.isBlank(szLocalDateTime)) {

            System.err.println("invalid date supplied for conversion,ignored.");

            return null;

        }

        return LocalDateTime.parse(parser.getText(), DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss").withZone(ZoneId.of("GMT+8")));

    }

}

import com.fasterxml.jackson.core.JsonGenerator;

import com.fasterxml.jackson.databind.JsonSerializer;

import com.fasterxml.jackson.databind.SerializerProvider;

import org.springframework.stereotype.Component;

import java.io.IOException;

import java.time.LocalDateTime;

import java.time.ZoneId;

import java.time.format.DateTimeFormatter;

/***

 * 兼容jsr310的LocalDateTime JSON序列化类

 */

@Component

public class JsonLocalDateTimeSerializer extends JsonSerializer<LocalDateTime> {

    @Override

    public void serialize(LocalDateTime value, JsonGenerator gen, SerializerProvider serializers) throws IOException{

        if(value ==null)

        {

            System.err.println("invalid date supplied for conversion,ignored.");

            return;

        }

        String formattedDate = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss").withZone(ZoneId.of("GMT+8")).format(value);

        gen.writeString(formattedDate);

    }

}

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