Spring 乌马尔沙林-蒙斯代斯普林杰克逊酒店

正在尝试创建restful服务以保存“PeriodeSeignment”，如下所示：

package DomainModel.Enseignement.Notations;

import java.time.MonthDay;

import javax.persistence.Basic;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;

import org.hibernate.annotations.GenericGenerator;
import org.springframework.format.annotation.DateTimeFormat;

import com.fasterxml.jackson.annotation.JsonFormat;

import DomainModel.Enseignement.UniteeEnseignement;

@Entity
@Table(name = "PERIODES_ENSEIGNEMENTS")
public class PeriodeEnseignement implements UniteeEnseignement {

    private Integer id;
    private String nom;
    private MonthDay debut;
    private MonthDay fin;

    @Id
    @Column(name = "ID")
    @GeneratedValue(generator = "UseExistingOrGenerateIdGenerator")
    @GenericGenerator(name = "UseExistingOrGenerateIdGenerator", strategy = "UsefulEntities.UseExistingOrGenerateIdGenerator")
    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    @Basic
    @Column(name = "NOM")
    public String getNom() {
        return nom;
    }

    public void setNom(String nom) {
        this.nom = nom;
    }

    @JsonFormat(pattern = "dd/MM")
    @DateTimeFormat(pattern = "dd/MM")
    public MonthDay getDebut() {
        return debut;
    }

    public void setDebut(MonthDay debut) {
        this.debut = debut;
    }

    @JsonFormat(pattern = "dd/MM")
    @DateTimeFormat(pattern = "dd/MM")
    public MonthDay getFin() {
        return fin;
    }

    public void setFin(MonthDay fin) {
        this.fin = fin;
    }
}

@Bean
public Jackson2ObjectMapperBuilder objectMapperBuilder() {
    Jackson2ObjectMapperBuilder builder = new Jackson2ObjectMapperBuilder();
    builder.modules(new JavaTimeModule());

    return builder;
}

但是注释字段出现了问题，原因是：

@JsonFormat(pattern = "dd/MM")
@DateTimeFormat(pattern = "dd/MM")

我已经持久化了一些其他实体，它们的工作方式类似于一个符咒，但它们不包含MonthDay属性（它可以与包含LocalDate的实体一起工作）

这是我的restfulcontroller：

@RestController
public class PeriodeEnseignementServices implements GenericUniteeEnseignementService<PeriodeEnseignement> {

@RequestMapping(value = "/periodeEnseignementService/registerPeriodeEnseignementService", method = RequestMethod.POST)
    private GenericResponse registerPeriodeEnseignement(PeriodeEnseignement periodeEnseignement) {
        return this.insertNewUniteeEnseignement(periodeEnseignement, this.periodeEnseignementRepository);
    }
}

那么，如何正确地整理/取消整理MonthDay属性呢

提前谢谢

{timestamp: 1552686924075, status: 400, error: "Bad Request", errors: [{,…}, {,…}],…}
error: "Bad Request"
errors: [{,…}, {,…}]
0: {,…}
arguments: [{codes: ["periodeEnseignement.debut", "debut"], arguments: null, defaultMessage: "debut",…}]
0: {codes: ["periodeEnseignement.debut", "debut"], arguments: null, defaultMessage: "debut",…}
arguments: null
code: "debut"
codes: ["periodeEnseignement.debut", "debut"]
0: "periodeEnseignement.debut"
1: "debut"
defaultMessage: "debut"
bindingFailure: true
code: "typeMismatch"
codes: ["typeMismatch.periodeEnseignement.debut", "typeMismatch.debut", "typeMismatch.java.time.MonthDay",…]
0: "typeMismatch.periodeEnseignement.debut"
1: "typeMismatch.debut"
2: "typeMismatch.java.time.MonthDay"
3: "typeMismatch"
defaultMessage: "Failed to convert property value of type 'java.lang.String' to required type 'java.time.MonthDay' for property 'debut'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [@com.fasterxml.jackson.annotation.JsonFormat @org.springframework.format.annotation.DateTimeFormat java.time.MonthDay] for value '07/02'; nested exception is java.lang.IllegalArgumentException: Parse attempt failed for value [07/02]"
field: "debut"
objectName: "periodeEnseignement"
rejectedValue: "07/02"
1: {,…}
arguments: [{codes: ["periodeEnseignement.fin", "fin"], arguments: null, defaultMessage: "fin", code: "fin"}]
0: {codes: ["periodeEnseignement.fin", "fin"], arguments: null, defaultMessage: "fin", code: "fin"}
arguments: null
code: "fin"
codes: ["periodeEnseignement.fin", "fin"]
0: "periodeEnseignement.fin"
1: "fin"
defaultMessage: "fin"
bindingFailure: true
code: "typeMismatch"
codes: ["typeMismatch.periodeEnseignement.fin", "typeMismatch.fin", "typeMismatch.java.time.MonthDay",…]
0: "typeMismatch.periodeEnseignement.fin"
1: "typeMismatch.fin"
2: "typeMismatch.java.time.MonthDay"
3: "typeMismatch"
defaultMessage: "Failed to convert property value of type 'java.lang.String' to required type 'java.time.MonthDay' for property 'fin'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [@com.fasterxml.jackson.annotation.JsonFormat @org.springframework.format.annotation.DateTimeFormat java.time.MonthDay] for value '01/12'; nested exception is java.lang.IllegalArgumentException: Parse attempt failed for value [01/12]"
field: "fin"
objectName: "periodeEnseignement"
rejectedValue: "01/12"
message: "Validation failed for object='periodeEnseignement'. Error count: 2"
path: "/periodeEnseignementService/registerPeriodeEnseignementService"
status: 400
timestamp: 1552686924075

[编辑#2]

从属性中删除@DateTimeFormat、添加@RequestBody并公开register方法后，客户端控制台中出现另一个错误：

POST http://localhost:8080/periodeEnseignementService/registerPeriodeEnseignementService 415
send @ jquery-3.3.1.js:9600
ajax @ jquery-3.3.1.js:9206
jQuery.(anonymous function) @ jquery-3.3.1.js:9355
(anonymous) @ utils_end_file.js:13
dispatch @ jquery-3.3.1.js:5183
elemData.handle @ jquery-3.3.1.js:4991


error: "Unsupported Media Type"
message: "Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported"
path: "/periodeEnseignementService/registerPeriodeEnseignementService"
status: 415
timestamp: 1552811644305

[编辑#3]

在客户端从post更改为ajax以发送json格式请求后，我遇到了另一个错误

error: "Bad Request"
message: "JSON parse error: Cannot construct instance of `DomainModel.Enseignement.Notations.PeriodeEnseignement` (although at least one Creator exists): no String-argument constructor/factory method to deserialize from String value ('id=5&nom=sdsdfsfd&debut=13%2F03&fin=17%2F03'); nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot construct instance of `DomainModel.Enseignement.Notations.PeriodeEnseignement` (although at least one Creator exists): no String-argument constructor/factory method to deserialize from String value ('id=5&nom=sdsdfsfd&debut=13%2F03&fin=17%2F03')↵ at [Source: (PushbackInputStream); line: 1, column: 1]"
path: "/periodeEnseignementService/registerPeriodeEnseignementService"
status: 400
timestamp: 1552820002498

---

注意：PeriodeSeignment确实有一个默认构造函数。

当您使用

Java8

Time

包和

Jackson

在

ObjectMapper

中注册

JavaTimeModule

时：

ObjectMapper mapper = new ObjectMapper();
mapper.registerModule(new JavaTimeModule());

在

Spring

中，您可以按如下方式对其进行自定义：

package DomainModel.Enseignement.Notations;

import java.time.MonthDay;

import javax.persistence.Basic;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;

import org.hibernate.annotations.GenericGenerator;
import org.springframework.format.annotation.DateTimeFormat;

import com.fasterxml.jackson.annotation.JsonFormat;

import DomainModel.Enseignement.UniteeEnseignement;

@Entity
@Table(name = "PERIODES_ENSEIGNEMENTS")
public class PeriodeEnseignement implements UniteeEnseignement {

    private Integer id;
    private String nom;
    private MonthDay debut;
    private MonthDay fin;

    @Id
    @Column(name = "ID")
    @GeneratedValue(generator = "UseExistingOrGenerateIdGenerator")
    @GenericGenerator(name = "UseExistingOrGenerateIdGenerator", strategy = "UsefulEntities.UseExistingOrGenerateIdGenerator")
    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    @Basic
    @Column(name = "NOM")
    public String getNom() {
        return nom;
    }

    public void setNom(String nom) {
        this.nom = nom;
    }

    @JsonFormat(pattern = "dd/MM")
    @DateTimeFormat(pattern = "dd/MM")
    public MonthDay getDebut() {
        return debut;
    }

    public void setDebut(MonthDay debut) {
        this.debut = debut;
    }

    @JsonFormat(pattern = "dd/MM")
    @DateTimeFormat(pattern = "dd/MM")
    public MonthDay getFin() {
        return fin;
    }

    public void setFin(MonthDay fin) {
        this.fin = fin;
    }
}

@Bean
public Jackson2ObjectMapperBuilder objectMapperBuilder() {
    Jackson2ObjectMapperBuilder builder = new Jackson2ObjectMapperBuilder();
    builder.modules(new JavaTimeModule());

    return builder;
}

编辑
将方法签名更新为：

public GenericResponse registerPeriodeEnseignement(@RequestBody PeriodeEnseignement periodeEnseignement)

---

使用

@RequestBody

注释并将方法

公开

经过多次修改，我终于解决了这个问题

1-将客户端调用从jQuery.post更改为$.ajax调用，如下所示

var form = $('#myForm');
var jsonFormData = getFormData(form);

$.ajax({
            url : "/path/to/web/service/controller",
            type : "POST",
            dataType : "json",
            contentType : "application/json",
            data : JSON.stringify(jsonFormData),

            complete : function() {
            },

            success : function(data) {
                alert("success !");
            },

            error : function() {
                alert("failed !");
            },
        });
    });

function getFormData($form) {
    var unindexed_array = $form.serializeArray();
    var indexed_array = {};

    $.map(unindexed_array, function(n, i) {
        indexed_array[n['name']] = n['value'];
    });

    return indexed_array;
}

2-将@RequestBody添加到我的服务端例程中：

@RequestMapping(value = "/periodeEnseignementService/registerPeriodeEnseignementService", method = RequestMethod.POST, produces = "application/json", consumes = "application/json")
public GenericResponse registerPeriodeEnseignement(@RequestBody PeriodeEnseignement periodeEnseignement) {
    return this.insertNewUniteeEnseignement(periodeEnseignement, this.periodeEnseignementRepository);
}

3-POJO类中不需要@DateTimeFormatter和@JsonFormat（“dd/MMM”）

4-必须为java.time.MonthDay配置JsonSerializer和JsonDeserializer，否则，字段保留为空

@Bean
    public ObjectMapper objectMapperBuilder() {
        SimpleModule msJavaTimeModule = new SimpleModule();

        msJavaTimeModule.addSerializer(MonthDay.class, new JsonSerializer<MonthDay>() {
            @Override
            public void serialize(MonthDay value, JsonGenerator gen, SerializerProvider serializers)
                    throws IOException {
                gen.writeStartObject();
                gen.writeStringField("label", value.format(DateTimeFormatter.ofPattern("dd MMM", Locale.FRANCE)));
                gen.writeEndObject();
            }
        });

        msJavaTimeModule.addDeserializer(MonthDay.class, new JsonDeserializer<MonthDay>() {

            @Override
            public MonthDay deserialize(JsonParser p, DeserializationContext ctxt)
                    throws IOException, JsonProcessingException {
                JsonNode node = p.getCodec().readTree(p);

                String content = node.asText();

                int slashIndex = content.indexOf('/');

                String dayAsString = content.substring(0, slashIndex);
                String monthAsString = content.substring(slashIndex + 1);

                int day = Integer.parseInt(dayAsString);
                int month = Integer.parseInt(monthAsString);

                return MonthDay.of(month, day);
            }
        });

        ObjectMapper objectMapper = new Jackson2ObjectMapperBuilder().modules(msJavaTimeModule).build();

        return objectMapper;
    }

@Bean
公共对象映射器objectMapperBuilder（）{
SimpleModule msJavaTimeModule=新SimpleModule（）；
msJavaTimeModule.addSerializer（MonthDay.class，新的JsonSerializer（））{
@凌驾
public void序列化（MonthDay值、JsonGenerator gen、SerializerProvider序列化器）
抛出IOException{
gen.writeStartObject（）；
gen.writeStringField（“label”，value.format（模式的DateTimeFormatter.of（“dd MMM”，Locale.FRANCE））；
writeEndObject将军（）；
}
});
msJavaTimeModule.addDeserializer（MonthDay.class，新的JsonDeserializer（））{
@凌驾
public MonthDay反序列化（JsonParser，反序列化上下文ctxt）
抛出IOException、JsonProcessingException{
JsonNode node=p.getCodec（）.readTree（p）；
字符串内容=node.asText（）；
int slashIndex=content.indexOf（'/'）；
String dayaString=content.substring（0，slashIndex）；
字符串monthastring=content.substring（slashIndex+1）；
int day=Integer.parseInt（dayaString）；
int month=Integer.parseInt（monthastring）；
返回月日（月日）；
}
});
ObjectMapper ObjectMapper=new Jackson2ObjectMapperBuilder（）.modules（msJavaTimeModule.build（）；
返回对象映射器；
}

---

感谢米查·齐奥伯的指导

我添加了一个@configuration类，并将这部分代码放在那里，调用了该方法，但仍然存在相同的问题：/@SidiMohamedMOULEYSLIMANE，您能否展示您的示例

JSON

负载和异常堆栈跟踪？也许会有一些细节来帮助发现错误。您的类和控制器看起来正常。问题是没有引发异常，服务器在使用“PeriodenSeignment”作为参数时不执行RegisterPeriodeEnSignement（PeriodenSeignement PeriodenSeignement），并且在没有执行时进行响应，我确信解组过程正在失败，因此服务器不会回复：/。。。在使用JsonFormat和JsonFormat注释LocalDate之前，LocalDate（在另一个restfulcontroller中）也存在同样的问题DateTimeFormat@SidiMohamedMOULEYSLIMANE，什么是

JSON

有效负载？若控制器未触发，则可能是请求错误。这是来自google chrome的，似乎无法按预期将字符串转换为MonthDay:：/