Spring mvc 将日期添加到数据库时出错

在通过Hibernate将日期从jsp添加到数据库时，我遇到了错误。 如果有人知道这个问题的解决方案，请告诉我。 谢谢你的帮助。下面是我的代码片段

register.jsp

<form:input path="date" id="datepicker"/>

HelloController.java

@Controller
@RequestMapping("/library/*")
public class HelloController {
    @RequestMapping(value="success", method = RequestMethod.POST)
    public String addUser(@ModelAttribute("register") Registration register, ModelMap model) {
        System.out.println(register.getFirstName());
        registerService.addUsers(register);
        return "register";
    }
}

在将日期从jsp添加到数据库时，我得到了以下错误

org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 1 errors
Field error in object 'register' on field 'date': rejected value [25/11/2014]; codes [typeMismatch.register.date,typeMismatch.date,typeMismatch.java.sql.Timestamp,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [register.date,date]; arguments []; default message [date]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'java.sql.Timestamp' for property 'date'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [java.lang.String] to required type [java.sql.Timestamp] for property 'date': no matching editors or conversion strategy found]
    at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.doBind(HandlerMethodInvoker.java:818)
    at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveHandlerArguments(HandlerMethodInvoker.java:367)
    at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:171)
    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436)
    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:643)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Thread.java:659)

---

问题似乎是时间戳对象和从JSP接收的日期字符串之间的映射

您可以通过以下任一方法解决此问题

将Register类日期变量类型更改为String类型，稍后在服务或DAO层中，您可以将其转换为如下所示的TimeStamp对象

public class CustomSerializer extends JsonSerializer<Timestamp> {
    @Override
    public void serialize(Timestamp date, JsonGenerator jgen, SerializerProvider provider) throws IOException, JsonProcessingException {

        //Now write you code for converting string to TimeStamp Object.

    }
}

日期日期=新日期（接收日期作为字符串）

Timestamp Timestamp=新的时间戳（date.getTime（））

或者您可以编写JSON序列化程序。首先用JSONSerialize注释日期变量

@JsonSerialize（使用=CustomSerializer.class）

私有时间戳日期

在提供CustomSerializer类的实现之后，如下所示

public class CustomSerializer extends JsonSerializer<Timestamp> {
    @Override
    public void serialize(Timestamp date, JsonGenerator jgen, SerializerProvider provider) throws IOException, JsonProcessingException {

        //Now write you code for converting string to TimeStamp Object.

    }
}

公共类CustomSerializer扩展JsonSerializer{
@凌驾
public void serialize（时间戳日期、JsonGenerator jgen、SerializerProvider提供程序）引发IOException、JsonProcessingException{
//现在编写将字符串转换为时间戳对象的代码。
}
}

---

同样，如果可以使用

java.util.Date

对象而不是

TimeStamp

对象，也可以为TimeStamp对象编写JsonDeserializer。下面的代码将解决您的问题

在模型类Registration.java上

import java.sql.Timestamp;
public class Registration {
private Timestamp date;
    public Timestamp getDate() {
        return date;
    }
    public void setDate(Timestamp date) {
        this.date = date;
    }
}

import java.util.Date;
public class Registration {
private Date date;
    public Date getDate() {
        return date;
    }
    public void setDate(Date date) {
        this.date = date;
    }
}

@Controller
@RequestMapping("/library/*")
public class HelloController {

@Override
@InitBinder
public void initBinder(WebDataBinder binder) {

   SimpleDateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
   dateFormat.setLenient(false);
   binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true));
}

@RequestMapping(value="success", method = RequestMethod.POST)
public String addUser(@ModelAttribute("register") Registration register, ModelMap model) {
    System.out.println(register.getFirstName());
    registerService.addUsers(register);
    return "register";
}
}

在控制器类HelloController.java上

import java.sql.Timestamp;
public class Registration {
private Timestamp date;
    public Timestamp getDate() {
        return date;
    }
    public void setDate(Timestamp date) {
        this.date = date;
    }
}

import java.util.Date;
public class Registration {
private Date date;
    public Date getDate() {
        return date;
    }
    public void setDate(Date date) {
        this.date = date;
    }
}

@Controller
@RequestMapping("/library/*")
public class HelloController {

@Override
@InitBinder
public void initBinder(WebDataBinder binder) {

   SimpleDateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
   dateFormat.setLenient(false);
   binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true));
}

@RequestMapping(value="success", method = RequestMethod.POST)
public String addUser(@ModelAttribute("register") Registration register, ModelMap model) {
    System.out.println(register.getFirstName());
    registerService.addUsers(register);
    return "register";
}
}

---

提交jsp表单后，默认情况下，请求中的所有参数都将是

String

类型。在

Spring MVC

中，职责是

initBinder

将所有这些字符串值转换为各自的类型，并将其与模型类变量绑定。

注册类中的日期变量是TimeStamp类型，其有效数据类似于

yyyy-mm-dd hh:mm:ss[.fffffffff]

其中输入的

是dd/mm/yyyy

没问题！。很乐意帮忙！：）