Restful PUT方法的ModelAttribute未填充值（JSON）

Question

我正在使用Spring
MVC建立一个完全宁静的Web应用程序。当我有一个PUT方法时，不会填充我的@ModelAttribute表单bean（所有值都为null）。如果我使用POST方法，则所有内容都会正确填充。

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@Entity
@Table（name =“ positiongps”）
公共类PositionGPS实现BaseEntity{
private static final long serialVersionUID = 1L;

@Id
@GeneratedValue（strategy = GenerationType.AUTO）
@Column（name =“ id”，可空= false，columnDefinition =“ SERIAL”，可更新= false）
私有Long id;

@Column（name =“ latitude”，精度= 11，小数位= 7，columnDefinition =“ NUMERIC”，nullable = false，可更新= true，unique = false）
private BigDecimal latitude;

@Column（name =“经度”，精度= 11，小数位= 7，columnDefinition =“ NUMERIC”，nullable = false，可更新= true，唯一= false）
private BigDecimal经度；

//构造函数//

public PositionGPS（）{
super（）;
纬度= new BigDecimal（“ 0”）;
经度= new BigDecimal（“ 0”）;
}

//获取并设置//

@Entity
@Table(name = "positiongps")
public class PositionGPS implements BaseEntity<Long> {
private static final long serialVersionUID = 1L;

@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "id", nullable = false, columnDefinition = "SERIAL", updatable = false)
private Long id;

@Column(name = "latitude", precision = 11, scale = 7, columnDefinition = "NUMERIC", nullable = false, updatable = true, unique = false)
private BigDecimal latitude;

@Column(name = "longitude", precision = 11, scale = 7, columnDefinition = "NUMERIC", nullable = false, updatable = true, unique = false)
private BigDecimal longitude;

// ** Constructeur **//

public PositionGPS() {
    super();
    latitude = new BigDecimal("0");
    longitude = new BigDecimal("0");
}

// ** Get and Set **//

。

@ResponseBody
@RequestMapping(value = "/{id}", method = RequestMethod.PUT)
public boolean update(@ModelAttribute("positionGPS") PositionGPS positionGPS, @PathVariable Long id, Model model) {
    LOG.debug("update :: IN, PositionGPS.Id=[" + id + "]");
    PositionGPS positionGPSOld = positionGPSService.getById(id);
    LOG.debug("update :: getId=[" + positionGPS.getId() + "]");
    LOG.debug("update :: getLatitude=[" + positionGPS.getLatitude() + "]");
    LOG.debug("update :: getLongitude=[" + positionGPS.getLongitude() + "]");

    try {
        if (positionGPSOld != null) {
            positionGPSOld.setLatitude(positionGPS.getLatitude());
            positionGPSOld.setLongitude(positionGPS.getLongitude());
            PositionGPS newpositionGPS = positionGPSService.update(positionGPSOld);
        } else {
            LOG.debug("update :: PositionGPS Error test");
        }

    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    return true;
}

web.xml

<filter>
    <filter-name>springSecurityFilterChain</filter-name>
    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
    <filter-name>springSecurityFilterChain</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

<filter>
    <filter-name>httpMethodFilter</filter-name>
    <filter-  class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>httpMethodFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

我的控制台：

DEBUG: PositionGPSController - update :: IN,   PositionGPS.Id=[136]
DEBUG: PositionGPSController - update :: getId=[136]
DEBUG: PositionGPSController - update :: getLatitude=[0]
DEBUG: PositionGPSController - update :: getLongitude=[0]

Answer 1

我取代

@ModelAttribute("positionGPS") PositionGPS positionGPS, @PathVariable Long id, Model model

对于

@RequestBody PositionGPS positionGPS, @PathVariable Long id, Model model)

链接帮助：http :
//docs.spring.io/spring/docs/current/spring-framework-
reference/html/mvc.html#mvc-config-
enable

和

SpringMVC：请勿反序列化JSON请求正文