值“0000-00-00”不能表示为java。sql。日期

Question

我正在做一个需要从数据库中提取数据的项目，我使用SpringMVC从数据库中构建模型来选择数据。

以下是我的JSP页面的问题：

<form action="result" method="get" >
<table>
<thead>
<tr>
<th>Date to select:</th>
<th>Name to select:</th>
<th>Type to select:</th>
</tr>
</thead>

<tbody>
<tr>
<td><form:select  path="listOfDates">
<form:option value="NONE"> --SELECT--</form:option>
<form:options items="${listOfDates}"></form:options>
</form:select>
</td>  
<td><form:select  path="listOfInstitutionsNames">
<form:option value="NONE"> --SELECT--</form:option>
<form:options items="${listOfInstitutionsNames}"></form:options>
</form:select>
</td>
<td>
<form:select  path="listOfInstitutionsTypes">
<form:option value="NONE"> --SELECT--</form:option>
<form:options items="${listOfInstitutionsTypes}"></form:options>
</form:select>
</td>
</tr>
</tbody>

<tfoot>
<tr>
<td><input type="submit" value="Извлечь"/></td>
</tr>
</tfoot>

</table>
</form>

如您所见，我尝试使用

@Controller
public class HomeController{ 

    @Autowired
    private ControllerSupportClass controllerSupportClass; 


        @RequestMapping(value="/search", method=RequestMethod.GET)
        public String search(Model model) {
            List<Date> listOfDates = controllerSupportClass.findAllDatesForm();
            List<String> listOfInstitutionsNames = controllerSupportClass.findAllInstitutionsForm();
            List<String> listOfInstitutionsTypes = controllerSupportClass.findAllTypesForm();
            model.addAttribute("listOfInstitutionsTypes", listOfInstitutionsTypes);
            model.addAttribute("listOfInstitutionsNames", listOfInstitutionsNames);
            model.addAttribute("listOfDates", listOfDates);
            return "search";    
        }


        @RequestMapping(value ="/result", method=RequestMethod.GET)
        public String SecondActionPage(@RequestParam String particularDate, 
                                       @RequestParam String nameOfInstitution, 
                                       @RequestParam String typeName,
                                       Model model) throws Exception {


                if(particularDate !="" && nameOfInstitution.trim() !="" && typeName.trim()=="") {                   
                    controllerSupportClass.findWithDateAndName(nameOfInstitution, particularDate, model);                   
                } else if(particularDate.trim() !="" && nameOfInstitution.trim() =="" && typeName.trim() !="") {                    
                    controllerSupportClass.findWithAddedDateAndType(typeName, particularDate, model);                   
                } else if(particularDate.trim() !="" && nameOfInstitution.trim() =="" && typeName.trim() ==""){         
                    controllerSupportClass.findWithAddedDate(particularDate, model);    
                } else if(particularDate.trim() !="" && nameOfInstitution.trim() !="" && typeName.trim() !="") {
                    throw new Exception("Search by choose all parameters is not exceptable");   
                } else {    
                    throw new Exception("You didn't put any search parameters");    
                }           
            return "search";
        }

}

它给了我这样一个错误：

警告：org.springframework.web.servlet.页面没有发现任何映射的HTTP请求与URI[/控制器/]在DispatcherServlet名称'appServlet'Hibernate：选择不同的creationda0_。DATE_IDDATE1_0_creationda0_CHILD_ADMISSION_DATECHILD2_0_creationda0_CHILD_GO_SCHOOL_DATECHILD3_0_creationda0_PARTICULAR_DATEPARTICULAR4_0_creationda0_VERSION0_CREATION_DATEcreationda0_警告：org.hibernate.util.JDBCExceptionReport-SQL错误：0，SQLState：S1009错误：org.hibernate.util.JDBCExceptionReport-值'0000-00-00'不能表示为java.sql.Date Jun19, 2013 3:26:53PMorg.apache.catalina.core.标准WrapperValve调用SEVERE： Servlet.service（）为servlet[appServlet]在上下文中与路径[/控制器]抛出异常[请求处理失败；嵌套异常org.hibernate.exception.GenericJDBCExc农田：无法执行查询]根本原因java.sql.SQL异常：值'0000-00-00'不能表示为java.sql.日期

如果你需要我的实体类，我在这里使用Datefromjava.util，但是我使用@Temporal注释将其从SQL转换为单元Date据我所知：

@Entity
@Table(name="CREATION_DATE")
public class CreationDate implements Serializable {


    private int dateId;

        @Id
        @GeneratedValue(strategy=IDENTITY)
        @Column(name="DATE_ID")
        public int getDateId() {
            return dateId;
        }

        public void setDateId(int dateId) {
            this.dateId = dateId;
        }


    private int version;

        @Version
        @Column(name="VERSION")
        public int getVersion() {
            return version;
        }

        public void setVersion(int version) {
            this.version = version;
        }


    private Date particularDate;

        @Temporal(TemporalType.DATE)
        @DateTimeFormat(pattern="yyyy-MM-dd")
        @Column(name="PARTICULAR_DATE")
        public Date getParticularDate() {
            return particularDate;
        }

        public void setParticularDate(Date particularDate) {
            this.particularDate = particularDate;
        }


    private Date childGoSchoolDate;

        @Temporal(TemporalType.DATE)
        @DateTimeFormat(pattern="yyyy-MM-dd")
        @Column(name="CHILD_GO_SCHOOL_DATE")
        public Date getChildGoSchoolDate() {
            return childGoSchoolDate;
        }

        public void setChildGoSchoolDate(Date childGoSchoolDate) {
            this.childGoSchoolDate = childGoSchoolDate;
        }


    private Date childAdmissionDate;

        @Temporal(TemporalType.DATE)
        @DateTimeFormat(pattern="yyyy-MM-dd")
        @Column(name="CHILD_ADMISSION_DATE")
        public Date getChildAdmissionDate() {
            return childAdmissionDate;
        }

        public void setChildAdmissionDate(Date childAdmissionDate) {
            this.childAdmissionDate = childAdmissionDate;
        }


}

假设数据类型转换的问题是因为MVC使用String，但实际类型是Date。




Answer 1

将zeroDateTimeBehavior=convertToNull添加到jdbc连接URL。

String jdbcUrl="jdbc:mysql://localhost:3306/master_schema?zeroDateTimeBehavior=convertToNull"

Answer 2

用JDBC-mysql协议追加以下语句：

"?zeroDateTimeBehavior=convertToNull&autoReconnect=true&characterEncoding=UTF-8&characterSetResults=UTF-8"

例如：

jdbc:mysql://localhost/infra?zeroDateTimeBehavior=convertToNull&autoReconnect=true&characterEncoding=UTF-8&characterSetResults=UTF-8

Answer 3

匿名用户

在MySql中，“0000-00-00”被认为是一个有效的日期，但不能作为java表示。sql。日期

如果日期为'0000-00-00'，则可以使用返回NULL的查询，否则返回实际值：

SELECT
  CASE WHEN `date`!='0000-00-00' THEN `date` END new_date
FROM
  yourtable

或者，您可以向数据源连接字符串中添加以下内容：

zeroDateTimeBehavior=convertToNull

日期'0000-00-00'将自动转换为空。