Question

我在使用RC1生成项目时没有遇到任何问题。在对项目进行一些工作后，我意识到使用select2自动完成的CRUD字段突然停止工作。当s2尝试从/ entity / s2路径获取数据时，我得到错误500。

完整的java控制台错误：

2017-03-09 11:20:46.136  WARN 42495 --- [nio-8080-exec-7] .w.s.m.s.DefaultHandlerExceptionResolver : Failed to write HTTP message: org.springframework.http.converter.HttpMessageNotWritableException: Could not write content: No converter found capable of converting from type [ar.edu.um.programacion2.oficios.reference.Disponibilidad] to type [java.lang.String] (through reference chain: io.springlets.data.web.select2.Select2DataWithConversion["results"]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: No converter found capable of converting from type [ar.edu.um.programacion2.oficios.reference.Disponibilidad] to type [java.lang.String] (through reference chain: io.springlets.data.web.select2.Select2DataWithConversion["results"])
2017-03-09 11:20:46.137  WARN 42495 --- [nio-8080-exec-7] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved exception caused by Handler execution: org.springframework.http.converter.HttpMessageNotWritableException: Could not write content: No converter found capable of converting from type [ar.edu.um.programacion2.oficios.reference.Disponibilidad] to type [java.lang.String] (through reference chain: io.springlets.data.web.select2.Select2DataWithConversion["results"]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: No converter found capable of converting from type [ar.edu.um.programacion2.oficios.reference.Disponibilidad] to type [java.lang.String] (through reference chain: io.springlets.data.web.select2.Select2DataWithConversion["results"])

任何字段引用字段现在都不起作用。这是该领域中用作参考的实体之一：

@RooJavaBean
@RooToString
@RooJpaEntity
@RooEquals(isJpaEntity = true)
public class Localidad {

    public Localidad(String nombre, String descripcion) {
        super();
        this.nombre = nombre;
        this.descripcion = descripcion;
    }

    /**
     * TODO Auto-generated attribute documentation
     *
     */
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    /**
     * TODO Auto-generated attribute documentation
     *
     */
    @Version
    private Integer version;

    /**
     * TODO Auto-generated attribute documentation
     *
     */
    @NotNull
    private String nombre;

    /**
     * TODO Auto-generated attribute documentation
     *
     */
    private String descripcion;


    private String googleMapsString;


    /**
     * TODO Auto-generated method documentation
     * 
     * @return String
     */
    public String toString() {
        return getNombre();
    }

    public String getMapString(){
        return "http://maps.googleapis.com/maps/api/staticmap?" + getGoogleMapsString() + "&key=";
    }
}

使用引用字段的类：

@RooJavaBean
@RooToString
@RooJpaEntity
@RooEquals(isJpaEntity = true)
public class Servicio {

    /**
     * TODO Auto-generated attribute documentation
     *
     */
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    /**
     * TODO Auto-generated attribute documentation
     *
     */
    @Version
    private Integer version;

    /**
     * TODO Auto-generated attribute documentation
     *
     */
    @NotNull
    private String nombre;

    /**
     * TODO Auto-generated attribute documentation
     *
     */
    private String descripcion;

    /**
     * TODO Auto-generated attribute documentation
     *
     */
    @RooUploadedFile(contentType = "image/png")
    @Lob
    private byte[] logo;

    /**
     * TODO Auto-generated attribute documentation
     *
     */
    @NotNull
    private String telefono;

    /**
     * TODO Auto-generated attribute documentation
     *
     */
    @NumberFormat
    private float puntaje;

    @OneToOne(fetch=FetchType.LAZY)
    @JoinColumn(name="localidad_id")
    private Localidad localidad;

    @OneToOne(fetch=FetchType.LAZY)
    @JoinColumn(name="disponibilidad_id")
    private Disponibilidad disponibilidad;

    @OneToOne(fetch=FetchType.LAZY)
    @JoinColumn(name="categoria_id")
    private Categoria categoria;

    @OneToOne(fetch=FetchType.LAZY)
    @JoinColumn(name="prestador_id")
    private Prestador prestador;

    @ManyToMany
    @JoinTable(name = "servicio_calificacion", joinColumns = @JoinColumn(name = "servicio_id"), inverseJoinColumns = @JoinColumn(name = "calificacion_id"))
    private List<CalificacionCliente> listadecalificaciones;


    /**
     * TODO Auto-generated method documentation
     * 
     * @return String
     */
    public String toString() {
        return getNombre() + " (" + getPrestador() + ")";
    }
}

其中一个观点是使用该字段：

<!DOCTYPE html>
<html lang="en" data-layout-decorate="~{layouts/default-layout}">
  <head id="head">

    <title data-th-text="#{label_create_entity(#{label_servicio})}">
      Create Servicio - oficios - SpringRoo Application</title>

    <!-- DateTimePicker -->
    <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/jquery-datetimepicker/2.5.4/build/jquery.datetimepicker.min.css" data-th-href="@{/webjars/datetimepicker/build/jquery.datetimepicker.min.css}" />

  </head>

  <body id="body">

    <header role="banner">
      <!-- Content replaced by layout of the page displayed -->
    </header>

    <!-- CONTAINER -->
    <div class="container bg-container">
      <!-- CONTENT -->
      <!--
        Only the inner content of the following tag "section" is included
        within the template, in the section "content"
      -->
      <section data-layout-fragment="content">
        <div class="container-fluid content" data-th-with="collectionLink=${@linkBuilder.of('ServiciosCollectionThymeleafController')}">

          <h1 data-th-text="#{label_create_entity(#{label_servicio})}">Create Servicio</h1>

          <!-- FORM -->
          <form class="form-horizontal validate" method="POST" data-th-object="${servicio}" data-th-action="@{${collectionLink.to('create').with('servicio', servicio.id)}}">

            <fieldset id="containerFields">
              <legend class="sr-only" data-th-text="#{label_data_entity(#{label_servicio})}">Servicio data </legend>

<div class="form-group has-error has-feedback" data-z="15c04ac1" id="servicio-nombre-field" data-th-classappend="${#fields.hasErrors('nombre')}? 'has-error has-feedback'" data-th-class="form-group">
  <label for="nombre" class="col-md-3 control-label" data-th-text="#{label_servicio_nombre}">nombre</label>
  <div class="col-md-6">
    <input id="nombre" name="nombre" data-th-value="*{{nombre}}" type="text" class="form-control" placeholder="nombre" data-th-placeholder="#{label_servicio_nombre}" data-toggle="tooltip" aria-describedby="nombreStatus" required="required" />
      <span data-th-classappend="${#fields.hasErrors('nombre')}? 'glyphicon glyphicon-remove form-control-feedback'" class="glyphicon glyphicon-remove form-control-feedback" data-th-if="${#fields.hasErrors('nombre')}" aria-hidden="true"></span>
      <span id="nombre-error" class="help-block" data-th-if="${#fields.hasErrors('nombre')}" data-th-errors="*{nombre}">Error message.</span>
  </div>
</div>
<div class="form-group has-error has-feedback" data-z="8d2c287d" id="servicio-descripcion-field" data-th-classappend="${#fields.hasErrors('descripcion')}? 'has-error has-feedback'" data-th-class="form-group">
  <label for="descripcion" class="col-md-3 control-label" data-th-text="#{label_servicio_descripcion}">descripcion</label>
  <div class="col-md-6">
    <input id="descripcion" name="descripcion" data-th-value="*{{descripcion}}" type="text" class="form-control" placeholder="descripcion" data-th-placeholder="#{label_servicio_descripcion}" data-toggle="tooltip" aria-describedby="descripcionStatus" />
      <span data-th-classappend="${#fields.hasErrors('descripcion')}? 'glyphicon glyphicon-remove form-control-feedback'" class="glyphicon glyphicon-remove form-control-feedback" data-th-if="${#fields.hasErrors('descripcion')}" aria-hidden="true"></span>
      <span id="descripcion-error" class="help-block" data-th-if="${#fields.hasErrors('descripcion')}" data-th-errors="*{descripcion}">Error message.</span>
  </div>
</div>
<div class="form-group has-error has-feedback" data-z="54220f01" id="servicio-logo-field" data-th-classappend="${#fields.hasErrors('logo')}? 'has-error has-feedback'" data-th-class="form-group">
  <label for="logo" class="col-md-3 control-label" data-th-text="#{label_servicio_logo}">logo</label>
  <div class="col-md-3">
    <input id="logo" name="logo" data-th-value="*{{logo}}" type="text" class="form-control inputmask" placeholder="logo" data-th-placeholder="#{label_servicio_logo}" data-toggle="tooltip" aria-describedby="logoStatus" data-inputmask-alias="numeric" data-inputmask-digits="2" />
      <span data-th-classappend="${#fields.hasErrors('logo')}? 'glyphicon glyphicon-remove form-control-feedback'" class="glyphicon glyphicon-remove form-control-feedback" data-th-if="${#fields.hasErrors('logo')}" aria-hidden="true"></span>
      <span id="logo-error" class="help-block" data-th-if="${#fields.hasErrors('logo')}" data-th-errors="*{logo}">Error message.</span>
  </div>
</div>
<div class="form-group has-error has-feedback" data-z="f1acb8e1" id="servicio-telefono-field" data-th-classappend="${#fields.hasErrors('telefono')}? 'has-error has-feedback'" data-th-class="form-group">
  <label for="telefono" class="col-md-3 control-label" data-th-text="#{label_servicio_telefono}">telefono</label>
  <div class="col-md-6">
    <input id="telefono" name="telefono" data-th-value="*{{telefono}}" type="text" class="form-control" placeholder="telefono" data-th-placeholder="#{label_servicio_telefono}" data-toggle="tooltip" aria-describedby="telefonoStatus" required="required" />
      <span data-th-classappend="${#fields.hasErrors('telefono')}? 'glyphicon glyphicon-remove form-control-feedback'" class="glyphicon glyphicon-remove form-control-feedback" data-th-if="${#fields.hasErrors('telefono')}" aria-hidden="true"></span>
      <span id="telefono-error" class="help-block" data-th-if="${#fields.hasErrors('telefono')}" data-th-errors="*{telefono}">Error message.</span>
  </div>
</div>
<div class="form-group has-error has-feedback" data-z="3c00987d" id="servicio-localidad-field" data-th-classappend="${#fields.hasErrors('localidad')}? 'has-error has-feedback'" data-th-class="form-group" data-th-with="collectionLink=${@linkBuilder.of('LocalidadsCollectionThymeleafController')}">
    <label for="localidad" class="col-md-3 control-label" data-th-text="#{label_servicio_localidad}">Localidad</label>
    <div class="col-md-6">
      <!-- Select2 -->
      <select data-th-field="*{localidad}" class="form-control dropdown-select-ajax" data-allow-clear="true" data-data-ajax--url="${collectionLink.to('select2')}" data-ajax--cache="true" data-ajax--delay="250" data-ajax--data-type="json" data-data-placeholder="#{info_select_an_option}">
          <option data-th-unless="*{localidad} == null" data-th-value="*{localidad.id}" data-th-text="*{{localidad}}" selected="selected">Localidad</option>
      </select>
      <span data-th-classappend="${#fields.hasErrors('localidad')}? 'glyphicon glyphicon-remove form-control-feedback'" class="glyphicon glyphicon-remove form-control-feedback" data-th-if="${#fields.hasErrors('localidad')}" aria-hidden="true"></span>
      <span id="localidad-error" class="help-block" data-th-if="${#fields.hasErrors('localidad')}" data-th-errors="*{localidad}">Error message.</span>
    </div>
</div>
<div class="form-group has-error has-feedback" data-z="19c21a81" id="servicio-disponibilidad-field" data-th-classappend="${#fields.hasErrors('disponibilidad')}? 'has-error has-feedback'" data-th-class="form-group" data-th-with="collectionLink=${@linkBuilder.of('DisponibilidadsCollectionThymeleafController')}">
    <label for="disponibilidad" class="col-md-3 control-label" data-th-text="#{label_servicio_disponibilidad}">Disponibilidad</label>
    <div class="col-md-6">
      <!-- Select2 -->
      <select data-th-field="*{disponibilidad}" class="form-control dropdown-select-ajax" data-allow-clear="true" data-data-ajax--url="${collectionLink.to('select2')}" data-ajax--cache="true" data-ajax--delay="250" data-ajax--data-type="json" data-data-placeholder="#{info_select_an_option}">
          <option data-th-unless="*{disponibilidad} == null" data-th-value="*{disponibilidad.id}" data-th-text="*{{disponibilidad}}" selected="selected">Disponibilidad</option>
      </select>
      <span data-th-classappend="${#fields.hasErrors('disponibilidad')}? 'glyphicon glyphicon-remove form-control-feedback'" class="glyphicon glyphicon-remove form-control-feedback" data-th-if="${#fields.hasErrors('disponibilidad')}" aria-hidden="true"></span>
      <span id="disponibilidad-error" class="help-block" data-th-if="${#fields.hasErrors('disponibilidad')}" data-th-errors="*{disponibilidad}">Error message.</span>
    </div>
</div>
<div class="form-group has-error has-feedback" data-z="1d95a73d" id="servicio-categoria-field" data-th-classappend="${#fields.hasErrors('categoria')}? 'has-error has-feedback'" data-th-class="form-group" data-th-with="collectionLink=${@linkBuilder.of('CategoriasCollectionThymeleafController')}">
    <label for="categoria" class="col-md-3 control-label" data-th-text="#{label_servicio_categoria}">Categoria</label>
    <div class="col-md-6">
      <!-- Select2 -->
      <select data-th-field="*{categoria}" class="form-control dropdown-select-ajax" data-allow-clear="true" data-data-ajax--url="${collectionLink.to('select2')}" data-ajax--cache="true" data-ajax--delay="250" data-ajax--data-type="json" data-data-placeholder="#{info_select_an_option}">
          <option data-th-unless="*{categoria} == null" data-th-value="*{categoria.id}" data-th-text="*{{categoria}}" selected="selected">Categoria</option>
      </select>
      <span data-th-classappend="${#fields.hasErrors('categoria')}? 'glyphicon glyphicon-remove form-control-feedback'" class="glyphicon glyphicon-remove form-control-feedback" data-th-if="${#fields.hasErrors('categoria')}" aria-hidden="true"></span>
      <span id="categoria-error" class="help-block" data-th-if="${#fields.hasErrors('categoria')}" data-th-errors="*{categoria}">Error message.</span>
    </div>
</div>
            </fieldset>


              <!-- buttons form -->
              <div class="form-group">
                <div class="col-md-9 col-md-offset-3">
                    <button type="submit" class="btn btn-primary" data-th-text="#{label_save}">Save</button>
                    <button type="reset" class="btn btn-default"  onclick="window.history.back()" data-th-text="#{label_reset}">Cancel</button>
                </div>
              </div>

          </form>
          <!-- /FORM -->

        </div>

      </section>
      <!-- /CONTENT -->
  </div>
  <!-- /CONTAINER -->

  <footer class="container">
    <!-- Content replaced by layout of the page displayed -->
  </footer>

  <!-- JavaScript
  ================================================== -->
  <!-- Placed at the end of the document so that the pages load faster -->
  <!-- JavaScript loaded by layout of the page displayed -->
  <!--
       Only the inner content of the following tag "javascript" is included
       within the template, in the div "javascript"
      -->
  <div data-layout-fragment="javascript">

    <!-- DateTimePicker -->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-datetimepicker/2.5.4/build/jquery.datetimepicker.full.min.js" data-th-src="@{/webjars/datetimepicker/build/jquery.datetimepicker.full.min.js}"></script>
    <script src="../../static/public/js/datetimepicker-defaults.js" data-th-src="@{/public/js/datetimepicker-defaults.js}"></script>

    <!-- jquery.inputmask -->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.inputmask/3.3.1/jquery.inputmask.bundle.min.js" data-th-src="@{/webjars/jquery.inputmask/min/jquery.inputmask.bundle.min.js}"></script>
    <script type="text/javascript" data-th-inline="javascript">
                    (function(jQuery) {
                        jQuery(document)
                                .ready(
                                        function() {
                                            Inputmask
                                                    .extendAliases({
                                                        'numeric' : {
                                                            'groupSeparator' : /*[[#{label_inputmask_groupSeparator}]]*/'.',
                                                            'radixPoint' : /*[[#{label_inputmask_radixPoint}]]*/','
                                                        },
                                                        'currency' : {
                                                            'prefix' : /*[[#{label_inputmask_prefix}]]*/'',
                                                            'suffix' : /*[[#{label_inputmask_suffix}]]*/' €'
                                                        }
                                                    });
                                        });
                    })(jQuery);
        </script>
    <script src="../../static/public/js/inputmask-defaults.js" data-th-src="@{/public/js/inputmask-defaults.js}"></script>

    <!-- JQuery Validation -->
    <script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.15.0/jquery.validate.min.js" data-th-src="@{/webjars/jquery-validation/dist/jquery.validate.min.js}">
          </script>
    <script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.15.0/additional-methods.min.js" data-th-src="@{/webjars/jquery-validation/dist/additional-methods.min.js}">
            </script>
    <script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.15.0/localization/messages_es.js" data-th-src="@{/webjars/jquery-validation/src/localization/messages_}+${#locale.language}+'.js'" data-th-if="${#locale.language} != 'en'">
            </script>
    <script src="../../static/public/js/validation-defaults.js" data-th-src="@{/public/js/validation-defaults.js}">
            </script>

    <script type="text/javascript" data-th-inline="javascript">
                    (function(jQuery) {
                        jQuery(document)
                                .ready(
                                        function() {
                                            jQuery
                                                    .extend(
                                                            jQuery.validator.messages,
                                                            {
                                                                'dateformat' : /*[[#{error_invalid_date}]]*/'Please enter a correct date/time',
                                                                'inputmask' : /*[[#{error_invalid_maskValue}]]*/'Please enter a valid value',
                                                            });
                                        });
                    })(jQuery);
          </script>

    </div>

  </body>

</html>

Log.roo

// Spring Roo 2.0.0.RC1 [rev 28015e3] log opened at 2017-03-06 20:50:24
project setup --topLevelPackage ar.edu.um.programacion2.oficios --java 8
jpa setup --database MYSQL --provider HIBERNATE --hostName 127.0.0.1 --databaseName oficiosdb --userName root
entity jpa --class ~.reference.Persona
field string --fieldName username --unique
field string --fieldName password --notNull
field string --fieldName email --unique
field string --fieldName telefono
field file --fieldName avatar --contentType PNG 
entity jpa --class ~.domain.Prestador  --extends ~.reference.Persona
field string --fieldName razonsocial --notNull
field string --fieldName oficio --notNull
entity jpa --class ~.reference.Disponibilidad
field string --fieldName franjahoraria --notNull
field string --fieldName descripcion
entity jpa --class ~.reference.Localidad
field string --fieldName nombre --notNull
field string --fieldName descripcion
entity jpa --class ~.reference.Categoria
field string --fieldName nombre --notNull
field string --fieldName descripcion
enum type --class ~.reference.TipoCalif
enum constant --name POSITIVO
enum constant --name NEGATIVO
enum constant --name NEUTRAL
entity jpa --class ~.domain.Cliente  --extends ~.reference.Persona
field string --fieldName nombre --notNull 
field string --fieldName apellido --notNull
field string --fieldName domicilio
field string --fieldName domicilio2
entity jpa --class ~.domain.Calificacion
field string --fieldName comentario --notNull
field enum --fieldName tipo --type ~.reference.TipoCalif
entity jpa --class ~.domain.CalificacionCliente  --extends ~.domain.Calificacion
entity jpa --class ~.domain.Servicio
field string --fieldName nombre --notNull 
field string --fieldName descripcion
field file --fieldName logo --contentType PNG
field string --fieldName telefono --notNull
field number --fieldName puntaje --type float
entity jpa --class ~.domain.CalificacionPrestador  --extends ~.domain.Calificacion
repository jpa --all
finder add --name findByTelefono --entity ~.domain.Servicio
finder add --name findByNombreLike --entity ~.domain.Servicio
finder add --name findByPuntaje --entity ~.domain.Servicio
finder add --name findByUsername --entity ~.domain.Cliente
finder add --name findByUsername --entity ~.domain.Prestador
finder add --name findByEmail --entity ~.domain.Cliente
finder add --name findByEmail --entity ~.domain.Prestador
service --all
web mvc setup
web mvc view setup --type THYMELEAF
web mvc controller --all --responseType THYMELEAF
web mvc templates setup --type THYMELEAF
web mvc language --code es --useAsDefault
// script --file script_roo
// Spring Roo 2.0.0.RC1 [rev 28015e3] log opened at 2017-03-06 21:19:16
help
// Spring Roo 2.0.0.RC1 [rev 28015e3] log closed at 2017-03-07 09:03:07
// Spring Roo 2.0.0.RC1 [rev 28015e3] log opened at 2017-03-07 20:12:48
// Spring Roo 2.0.0.RC1 [rev 28015e3] log closed at 2017-03-08 01:34:17
// Spring Roo 2.0.0.RC1 [rev 28015e3] log opened at 2017-03-08 01:34:37
web mvc finder --entity ~.domain.Servicio 
// Spring Roo 2.0.0.RC1 [rev 28015e3] log closed at 2017-03-08 02:28:28
// Spring Roo 2.0.0.RC1 [rev 28015e3] log opened at 2017-03-08 02:28:44
web mvc finder --all
web mvc finder --all 
// Spring Roo 2.0.0.RC1 [rev 28015e3] log closed at 2017-03-08 02:29:31
// Spring Roo 2.0.0.RC1 [rev 28015e3] log opened at 2017-03-08 02:29:39
// Spring Roo 2.0.0.RC1 [rev 28015e3] log closed at 2017-03-08 02:29:54
// Spring Roo 2.0.0.RC1 [rev 28015e3] log opened at 2017-03-08 02:30:11
hint
help
web mvc finder --all 
web mvc finder --entity ~.domain.Cliente
web mvc finder --all 
web mvc finder --all --responseType THYMELEAF 
web mvc finder --entity ~.domain.Servicio --responseType THYMELEAF 
// Spring Roo 2.0.0.RC1 [rev 28015e3] log closed at 2017-03-08 03:13:33
// Spring Roo 2.0.0.RC1 [rev 28015e3] log opened at 2017-03-08 03:14:23
hint
hint finders
finder add --entity ~.domain.Servicio --name findByCategoria
finder add --entity ~.domain.Servicio --name queryByCategoria
finder add --entity ~.reference.Categoria --name findByNombre
security setup --provider SPRINGLETS_JPA 
entity jpa --class ~.domain.Administrador --extends ~.reference.Persona
web mvc controller --entity ~.domain.Administrador
service --entity ~.domain.Administrador 
repository jpa --entity ~.domain.Administrador 
service --entity ~.domain.Administrador 
web mvc controller --entity ~.domain.Administrador 
web mvc controller --entity ~.domain.Administrador --responseType THYMELEAF 
finder add --entity ~.reference.Persona --name findByUsername
// Spring Roo 2.0.0.RC1 [rev 28015e3] log closed at 2017-03-08 08:02:54
// Spring Roo 2.0.0.RC1 [rev 28015e3] log opened at 2017-03-08 21:06:10
// Spring Roo 2.0.0.RC1 [rev 28015e3] log closed at 2017-03-09 09:30:10
// Spring Roo 2.0.0.RC1 [rev 28015e3] log opened at 2017-03-09 10:08:32
// Spring Roo 2.0.0.RC1 [rev 28015e3] log closed at 2017-03-09 15:51:20

注意：首先我认为Spring安全性是问题，因为用户没有权限列出该实体，但是当我授予用户权限时问题从错误403变为到了我现在的500。在那之后我完全卡住了。我尝试再次生成所有视图，但它没有任何效果。

由于

Answer 1

在您对Spring Security配置类遇到的问题以及转换器注册中出现的错误的最后评论之后，我知道您的问题在哪里。

几周前，我在Spring Security中发现了一个问题，我在他们的存储库中创建了以下问题：

https://github.com/spring-projects/spring-security/issues/4202

似乎@Configuration类扩展了WebSecurityConfigurerAdapter抽象类（如Spring Roo生成的代码中），某些组件正在尝试@Autowired ConversionService个实例在formatters已在Spring上下文中注册之前，addFormatters方法不包含任何格式化程序。

一个简单的解决方案可以解决您的问题并且您将能够在项目中使用Spring Security，而不是@Override生成的setContentNegotiationStrategy类中的SecurityConfiguration方法包括@Autowired注释。

以下示例介绍如何正确覆盖此方法。（在此示例中，代码已注释）

https://github.com/jcagarcia/proofs/blob/master/spring-security-and-formatters/src/main/java/org/springframework/roo/petclinic/config/security/SecurityConfiguration.java#L54

如果这可以解决您的问题，那么comment on the issue说你有同样的问题会很棒。

希望它有所帮助并感谢所有提供的信息！

Answer 2

您可以在此处找到与示例网址一起使用的java中的Select2：http://www.javasolution.in/search/label/autocomplete您可以在此处找到带有说明的整个代码

视图上的select2自动完成错误（spring roo rc1）

2 个答案: